The hdmi_avi_infoframe_init() never needs to return an error, change its return type to void.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Andrzej Hajda a.hajda@samsung.com Acked-by: Bartlomiej Zolnierkiewicz b.zolnierkie@samsung.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/drm_edid.c | 5 +---- drivers/video/hdmi.c | 11 ++--------- include/linux/hdmi.h | 2 +- 3 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index ec10dc3e859c..5f3bc3486fde 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -5449,14 +5449,11 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, { enum hdmi_picture_aspect picture_aspect; u8 vic, hdmi_vic; - int err;

if (!frame || !mode) return -EINVAL;

- err = hdmi_avi_infoframe_init(frame); - if (err < 0) - return err; + hdmi_avi_infoframe_init(frame);

if (mode->flags & DRM_MODE_FLAG_DBLCLK) frame->pixel_repeat = 1; diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 9c82e2a0a411..856a8c4e84a2 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -53,18 +53,14 @@ static void hdmi_infoframe_set_checksum(void *buffer, size_t size) /** * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe * @frame: HDMI AVI infoframe - * - * Returns 0 on success or a negative error code on failure. */ -int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) +void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) { memset(frame, 0, sizeof(*frame));

frame->type = HDMI_INFOFRAME_TYPE_AVI; frame->version = 2; frame->length = HDMI_AVI_INFOFRAME_SIZE; - - return 0; } EXPORT_SYMBOL(hdmi_avi_infoframe_init);

@@ -1553,7 +1549,6 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame, const void *buffer, size_t size) { const u8 *ptr = buffer; - int ret;

if (size < HDMI_INFOFRAME_SIZE(AVI)) return -EINVAL; @@ -1566,9 +1561,7 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame, if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0) return -EINVAL;

- ret = hdmi_avi_infoframe_init(frame); - if (ret) - return ret; + hdmi_avi_infoframe_init(frame);

ptr += HDMI_INFOFRAME_HEADER_SIZE;

diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index 9918a6c910c5..9613d796cfb1 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -207,7 +207,7 @@ struct hdmi_drm_infoframe { u16 max_fall; };

-int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame); +void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame); ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,

The drm_display_info structure contains many fields related to HDMI sinks, but none that identifies if a sink compliant with CEA-861 (EDID) shall be treated as an HDMI sink or a DVI sink. Add such a flag, and populate it according to section 8.3.3 ("DVI/HDMI Device Discrimination") of the HDMI v1.3 specification.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Andrzej Hajda a.hajda@samsung.com Reviewed-by: Ville Syrjälä ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- Documentation/gpu/todo.rst | 14 ++++++++++++++ drivers/gpu/drm/drm_edid.c | 6 ++++++ include/drm/drm_connector.h | 8 ++++++++ 3 files changed, 28 insertions(+)

diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 370ac678106e..ccf5e8e34222 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -407,6 +407,20 @@ Contact: Daniel Vetter

Level: Intermediate

+Replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi +--------------------------------------------------------------- + +Once EDID is parsed, the monitor HDMI support information is available through +drm_display_info.is_hdmi. Many drivers still call drm_detect_hdmi_monitor() to +retrieve the same information, which is less efficient. + +Audit each individual driver calling drm_detect_hdmi_monitor() and switch to +drm_display_info.is_hdmi if applicable. + +Contact: Laurent Pinchart, respective driver maintainers + +Level: Intermediate + Core refactorings =================

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 5f3bc3486fde..ad41764a4ebe 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4647,6 +4647,9 @@ EXPORT_SYMBOL(drm_av_sync_delay); * * Parse the CEA extension according to CEA-861-B. * + * Drivers that have added the modes parsed from EDID to drm_display_info + * should use &drm_display_info.is_hdmi instead of calling this function. + * * Return: True if the monitor is HDMI, false if not or unknown. */ bool drm_detect_hdmi_monitor(struct edid *edid) @@ -4881,6 +4884,8 @@ drm_parse_hdmi_vsdb_video(struct drm_connector *connector, const u8 *db) struct drm_display_info *info = &connector->display_info; u8 len = cea_db_payload_len(db);

+ info->is_hdmi = true; + if (len >= 6) info->dvi_dual = db[6] & 1; if (len >= 7) @@ -4949,6 +4954,7 @@ drm_reset_display_info(struct drm_connector *connector) info->cea_rev = 0; info->max_tmds_clock = 0; info->dvi_dual = false; + info->is_hdmi = false; info->has_hdmi_infoframe = false; info->rgb_quant_range_selectable = false; memset(&info->hdmi, 0, sizeof(info->hdmi)); diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index c3bd5262db9c..0df7a95ca5d9 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -434,6 +434,14 @@ struct drm_display_info { */ bool dvi_dual;

+ /** + * @is_hdmi: True if the sink is an HDMI device. + * + * This field shall be used instead of calling + * drm_detect_hdmi_monitor() when possible. + */ + bool is_hdmi; + /** * @has_hdmi_infoframe: Does the sink support the HDMI infoframe? */

The drm_bridge_funcs atomic_state_duplicate and atomic_state_destroy operations are erroneously documented as having a default implementation if not implemented in bridge drivers. This isn't correct, fix the documentation.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com --- include/drm/drm_bridge.h | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 999faaaab9a1..38de129d5947 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -349,9 +349,11 @@ struct drm_bridge_funcs { * Duplicate the current bridge state object (which is guaranteed to be * non-NULL). * - * The atomic_duplicate_state() hook is optional. When not implemented - * the core allocates a drm_bridge_state object and calls - * __drm_atomic_helper_bridge_duplicate_state() to initialize it. + * The atomic_duplicate_state hook is mandatory if the bridge + * implements any of the atomic hooks, and should be left unassigned + * otherwise. For bridges that don't subclass &drm_bridge_state, the + * drm_atomic_helper_bridge_duplicate_state() helper function shall be + * used to implement this hook. * * RETURNS: * A valid drm_bridge_state object or NULL if the allocation fails. @@ -364,8 +366,11 @@ struct drm_bridge_funcs { * Destroy a bridge state object previously allocated by * &drm_bridge_funcs.atomic_duplicate_state(). * - * The atomic_destroy_state hook is optional. When not implemented the - * core calls kfree() on the state. + * The atomic_destroy_state hook is mandatory if the bridge implements + * any of the atomic hooks, and should be left unassigned otherwise. + * For bridges that don't subclass &drm_bridge_state, the + * drm_atomic_helper_bridge_destroy_state() helper function shall be + * used to implement this hook. */ void (*atomic_destroy_state)(struct drm_bridge *bridge, struct drm_bridge_state *state); @@ -474,7 +479,10 @@ struct drm_bridge_funcs { * This function is called at attach time. * * The atomic_reset hook is mandatory if the bridge implements any of - * the atomic hooks, and should be left unassigned otherwise. + * the atomic hooks, and should be left unassigned otherwise. For + * bridges that don't subclass &drm_bridge_state, the + * drm_atomic_helper_bridge_reset() helper function shall be used to + * implement this hook. * * Note that the atomic_reset() semantics is not exactly matching the * reset() semantics found on other components (connector, plane, ...).

To support implementation of DRM connectors on top of DRM bridges instead of by bridges, the drm_bridge needs to expose new operations and data:

- Output detection, hot-plug notification, mode retrieval and EDID retrieval operations - Bitmask of supported operations - Bridge output type - I2C adapter for DDC access

Add and document these.

Three new bridge helper functions are also added to handle hot plug notification in a way that is as transparent as possible for the bridges.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Reviewed-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com Acked-by: Daniel Vetter daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_bridge.c | 201 ++++++++++++++++++++++++++++++++++- include/drm/drm_bridge.h | 192 ++++++++++++++++++++++++++++++++- 2 files changed, 391 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 52dfc67a6cf8..5a8f7d7e05f3 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -95,6 +95,8 @@ static LIST_HEAD(bridge_list); */ void drm_bridge_add(struct drm_bridge *bridge) { + mutex_init(&bridge->hpd_mutex); + mutex_lock(&bridge_lock); list_add_tail(&bridge->list, &bridge_list); mutex_unlock(&bridge_lock); @@ -111,6 +113,8 @@ void drm_bridge_remove(struct drm_bridge *bridge) mutex_lock(&bridge_lock); list_del_init(&bridge->list); mutex_unlock(&bridge_lock); + + mutex_destroy(&bridge->hpd_mutex); } EXPORT_SYMBOL(drm_bridge_remove);

@@ -241,7 +245,7 @@ void drm_bridge_detach(struct drm_bridge *bridge) * Bridge drivers expose operations through the &drm_bridge_funcs structure. * The DRM internals (atomic and CRTC helpers) use the helpers defined in * drm_bridge.c to call bridge operations. Those operations are divided in - * two big categories to support different parts of the bridge usage. + * three big categories to support different parts of the bridge usage. * * - The encoder-related operations support control of the bridges in the * chain, and are roughly counterparts to the &drm_encoder_helper_funcs @@ -271,6 +275,43 @@ void drm_bridge_detach(struct drm_bridge *bridge) * implement them shall thus also implement the atomic version of the * encoder-related operations. This feature is not supported by the legacy * CRTC helpers. + * + * - The connector-related operations support implementing a &drm_connector + * based on a chain of bridges. DRM bridges traditionally create a + * &drm_connector for bridges meant to be used at the end of the chain. This + * puts additional burden on bridge drivers, especially for bridges that may + * be used in the middle of a chain or at the end of it. Furthermore, it + * requires all operations of the &drm_connector to be handled by a single + * bridge, which doesn't always match the hardware architecture. + * + * To simplify bridge drivers and make the connector implementation more + * flexible, a new model allows bridges to unconditionally skip creation of + * &drm_connector and instead expose &drm_bridge_funcs operations to support + * an externally-implemented &drm_connector. Those operations are + * &drm_bridge_funcs.detect, &drm_bridge_funcs.get_modes, + * &drm_bridge_funcs.get_edid, &drm_bridge_funcs.hpd_notify, + * &drm_bridge_funcs.hpd_enable and &drm_bridge_funcs.hpd_disable. When + * implemented, display drivers shall create a &drm_connector instance for + * each chain of bridges, and implement those connector instances based on + * the bridge connector operations. + * + * Bridge drivers shall implement the connector-related operations for all + * the features that the bridge hardware support. For instance, if a bridge + * supports reading EDID, the &drm_bridge_funcs.get_edid shall be + * implemented. This however doesn't mean that the DDC lines are wired to the + * bridge on a particular platform, as they could also be connected to an I2C + * controller of the SoC. Support for the connector-related operations on the + * running platform is reported through the &drm_bridge.ops flags. Bridge + * drivers shall detect which operations they can support on the platform + * (usually this information is provided by ACPI or DT), and set the + * &drm_bridge.ops flags for all supported operations. A flag shall only be + * set if the corresponding &drm_bridge_funcs operation is implemented, but + * an implemented operation doesn't necessarily imply that the corresponding + * flag will be set. Display drivers shall use the &drm_bridge.ops flags to + * decide which bridge to delegate a connector operation to. This mechanism + * allows providing a single static const &drm_bridge_funcs instance in + * bridge drivers, improving security by storing function pointers in + * read-only memory. */

/** @@ -970,6 +1011,164 @@ int drm_atomic_bridge_chain_check(struct drm_bridge *bridge, } EXPORT_SYMBOL(drm_atomic_bridge_chain_check);

+/** + * drm_bridge_detect - check if anything is attached to the bridge output + * @bridge: bridge control structure + * + * If the bridge supports output detection, as reported by the + * DRM_BRIDGE_OP_DETECT bridge ops flag, call &drm_bridge_funcs.detect for the + * bridge and return the connection status. Otherwise return + * connector_status_unknown. + * + * RETURNS: + * The detection status on success, or connector_status_unknown if the bridge + * doesn't support output detection. + */ +enum drm_connector_status drm_bridge_detect(struct drm_bridge *bridge) +{ + if (!(bridge->ops & DRM_BRIDGE_OP_DETECT)) + return connector_status_unknown; + + return bridge->funcs->detect(bridge); +} +EXPORT_SYMBOL_GPL(drm_bridge_detect); + +/** + * drm_bridge_get_modes - fill all modes currently valid for the sink into the + * @connector + * @bridge: bridge control structure + * @connector: the connector to fill with modes + * + * If the bridge supports output modes retrieval, as reported by the + * DRM_BRIDGE_OP_MODES bridge ops flag, call &drm_bridge_funcs.get_modes to + * fill the connector with all valid modes and return the number of modes + * added. Otherwise return 0. + * + * RETURNS: + * The number of modes added to the connector. + */ +int drm_bridge_get_modes(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + if (!(bridge->ops & DRM_BRIDGE_OP_MODES)) + return 0; + + return bridge->funcs->get_modes(bridge, connector); +} +EXPORT_SYMBOL_GPL(drm_bridge_get_modes); + +/** + * drm_bridge_get_edid - get the EDID data of the connected display + * @bridge: bridge control structure + * @connector: the connector to read EDID for + * + * If the bridge supports output EDID retrieval, as reported by the + * DRM_BRIDGE_OP_EDID bridge ops flag, call &drm_bridge_funcs.get_edid to + * get the EDID and return it. Otherwise return ERR_PTR(-ENOTSUPP). + * + * RETURNS: + * The retrieved EDID on success, or an error pointer otherwise. + */ +struct edid *drm_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + if (!(bridge->ops & DRM_BRIDGE_OP_EDID)) + return ERR_PTR(-ENOTSUPP); + + return bridge->funcs->get_edid(bridge, connector); +} +EXPORT_SYMBOL_GPL(drm_bridge_get_edid); + +/** + * drm_bridge_hpd_enable - enable hot plug detection for the bridge + * @bridge: bridge control structure + * @cb: hot-plug detection callback + * @data: data to be passed to the hot-plug detection callback + * + * Call &drm_bridge_funcs.hpd_enable if implemented and register the given @cb + * and @data as hot plug notification callback. From now on the @cb will be + * called with @data when an output status change is detected by the bridge, + * until hot plug notification gets disabled with drm_bridge_hpd_disable(). + * + * Hot plug detection is supported only if the DRM_BRIDGE_OP_HPD flag is set in + * bridge->ops. This function shall not be called when the flag is not set. + * + * Only one hot plug detection callback can be registered at a time, it is an + * error to call this function when hot plug detection is already enabled for + * the bridge. + */ +void drm_bridge_hpd_enable(struct drm_bridge *bridge, + void (*cb)(void *data, + enum drm_connector_status status), + void *data) +{ + if (!(bridge->ops & DRM_BRIDGE_OP_HPD)) + return; + + mutex_lock(&bridge->hpd_mutex); + + if (WARN(bridge->hpd_cb, "Hot plug detection already enabled\n")) + goto unlock; + + bridge->hpd_cb = cb; + bridge->hpd_data = data; + + if (bridge->funcs->hpd_enable) + bridge->funcs->hpd_enable(bridge); + +unlock: + mutex_unlock(&bridge->hpd_mutex); +} +EXPORT_SYMBOL_GPL(drm_bridge_hpd_enable); + +/** + * drm_bridge_hpd_disable - disable hot plug detection for the bridge + * @bridge: bridge control structure + * + * Call &drm_bridge_funcs.hpd_disable if implemented and unregister the hot + * plug detection callback previously registered with drm_bridge_hpd_enable(). + * Once this function returns the callback will not be called by the bridge + * when an output status change occurs. + * + * Hot plug detection is supported only if the DRM_BRIDGE_OP_HPD flag is set in + * bridge->ops. This function shall not be called when the flag is not set. + */ +void drm_bridge_hpd_disable(struct drm_bridge *bridge) +{ + if (!(bridge->ops & DRM_BRIDGE_OP_HPD)) + return; + + mutex_lock(&bridge->hpd_mutex); + if (bridge->funcs->hpd_disable) + bridge->funcs->hpd_disable(bridge); + + bridge->hpd_cb = NULL; + bridge->hpd_data = NULL; + mutex_unlock(&bridge->hpd_mutex); +} +EXPORT_SYMBOL_GPL(drm_bridge_hpd_disable); + +/** + * drm_bridge_hpd_notify - notify hot plug detection events + * @bridge: bridge control structure + * @status: output connection status + * + * Bridge drivers shall call this function to report hot plug events when they + * detect a change in the output status, when hot plug detection has been + * enabled by drm_bridge_hpd_enable(). + * + * This function shall be called in a context that can sleep. + */ +void drm_bridge_hpd_notify(struct drm_bridge *bridge, + enum drm_connector_status status) +{ + mutex_lock(&bridge->hpd_mutex); + if (bridge->hpd_cb) + bridge->hpd_cb(bridge->hpd_data, status); + mutex_unlock(&bridge->hpd_mutex); +} +EXPORT_SYMBOL_GPL(drm_bridge_hpd_notify); + #ifdef CONFIG_OF /** * of_drm_find_bridge - find the bridge corresponding to the device node in diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 38de129d5947..9d5d750973e9 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -23,8 +23,9 @@ #ifndef __DRM_BRIDGE_H__ #define __DRM_BRIDGE_H__

-#include <linux/list.h> #include <linux/ctype.h> +#include <linux/list.h> +#include <linux/mutex.h>

#include <drm/drm_atomic.h> #include <drm/drm_encoder.h> @@ -33,7 +34,10 @@

struct drm_bridge; struct drm_bridge_timings; +struct drm_connector; struct drm_panel; +struct edid; +struct i2c_adapter;

/** * struct drm_bridge_funcs - drm_bridge control functions @@ -497,6 +501,119 @@ struct drm_bridge_funcs { * giving the reason of the failure otherwise. */ struct drm_bridge_state *(*atomic_reset)(struct drm_bridge *bridge); + + /** + * @detect: + * + * Check if anything is attached to the bridge output. + * + * This callback is optional, if not implemented the bridge will be + * considered as always having a component attached to its output. + * Bridges that implement this callback shall set the + * DRM_BRIDGE_OP_DETECT flag in their &drm_bridge->ops. + * + * RETURNS: + * + * drm_connector_status indicating the bridge output status. + */ + enum drm_connector_status (*detect)(struct drm_bridge *bridge); + + /** + * @get_modes: + * + * Fill all modes currently valid for the sink into the &drm_connector + * with drm_mode_probed_add(). + * + * The @get_modes callback is mostly intended to support non-probeable + * displays such as many fixed panels. Bridges that support reading + * EDID shall leave @get_modes unimplemented and implement the + * &drm_bridge_funcs->get_edid callback instead. + * + * This callback is optional. Bridges that implement it shall set the + * DRM_BRIDGE_OP_MODES flag in their &drm_bridge->ops. + * + * The connector parameter shall be used for the sole purpose of + * filling modes, and shall not be stored internally by bridge drivers + * for future usage. + * + * RETURNS: + * + * The number of modes added by calling drm_mode_probed_add(). + */ + int (*get_modes)(struct drm_bridge *bridge, + struct drm_connector *connector); + + /** + * @get_edid: + * + * Read and parse the EDID data of the connected display. + * + * The @get_edid callback is the preferred way of reporting mode + * information for a display connected to the bridge output. Bridges + * that support reading EDID shall implement this callback and leave + * the @get_modes callback unimplemented. + * + * The caller of this operation shall first verify the output + * connection status and refrain from reading EDID from a disconnected + * output. + * + * This callback is optional. Bridges that implement it shall set the + * DRM_BRIDGE_OP_EDID flag in their &drm_bridge->ops. + * + * The connector parameter shall be used for the sole purpose of EDID + * retrieval and parsing, and shall not be stored internally by bridge + * drivers for future usage. + * + * RETURNS: + * + * An edid structure newly allocated with kmalloc() (or similar) on + * success, or NULL otherwise. The caller is responsible for freeing + * the returned edid structure with kfree(). + */ + struct edid *(*get_edid)(struct drm_bridge *bridge, + struct drm_connector *connector); + + /** + * @hpd_notify: + * + * Notify the bridge of hot plug detection. + * + * This callback is optional, it may be implemented by bridges that + * need to be notified of display connection or disconnection for + * internal reasons. One use case is to reset the internal state of CEC + * controllers for HDMI bridges. + */ + void (*hpd_notify)(struct drm_bridge *bridge, + enum drm_connector_status status); + + /** + * @hpd_enable: + * + * Enable hot plug detection. From now on the bridge shall call + * drm_bridge_hpd_notify() each time a change is detected in the output + * connection status, until hot plug detection gets disabled with + * @hpd_disable. + * + * This callback is optional and shall only be implemented by bridges + * that support hot-plug notification without polling. Bridges that + * implement it shall also implement the @hpd_disable callback and set + * the DRM_BRIDGE_OP_HPD flag in their &drm_bridge->ops. + */ + void (*hpd_enable)(struct drm_bridge *bridge); + + /** + * @hpd_disable: + * + * Disable hot plug detection. Once this function returns the bridge + * shall not call drm_bridge_hpd_notify() when a change in the output + * connection status occurs. + * + * This callback is optional and shall only be implemented by bridges + * that support hot-plug notification without polling. Bridges that + * implement it shall also implement the @hpd_enable callback and set + * the DRM_BRIDGE_OP_HPD flag in their &drm_bridge->ops. + */ + void (*hpd_disable)(struct drm_bridge *bridge); };

/** @@ -535,6 +652,39 @@ struct drm_bridge_timings { bool dual_link; };

+/** + * enum drm_bridge_ops - Bitmask of operations supported by the bridge + */ +enum drm_bridge_ops { + /** + * @DRM_BRIDGE_OP_DETECT: The bridge can detect displays connected to + * its output. Bridges that set this flag shall implement the + * &drm_bridge_funcs->detect callback. + */ + DRM_BRIDGE_OP_DETECT = BIT(0), + /** + * @DRM_BRIDGE_OP_EDID: The bridge can retrieve the EDID of the display + * connected to its output. Bridges that set this flag shall implement + * the &drm_bridge_funcs->get_edid callback. + */ + DRM_BRIDGE_OP_EDID = BIT(1), + /** + * @DRM_BRIDGE_OP_HPD: The bridge can detect hot-plug and hot-unplug + * without requiring polling. Bridges that set this flag shall + * implement the &drm_bridge_funcs->hpd_enable and + * &drm_bridge_funcs->hpd_disable callbacks if they support enabling + * and disabling hot-plug detection dynamically. + */ + DRM_BRIDGE_OP_HPD = BIT(2), + /** + * @DRM_BRIDGE_OP_MODES: The bridge can retrieve the modes supported + * by the display at its output. This does not include reading EDID + * which is separately covered by @DRM_BRIDGE_OP_EDID. Bridges that set + * this flag shall implement the &drm_bridge_funcs->get_modes callback. + */ + DRM_BRIDGE_OP_MODES = BIT(3), +}; + /** * struct drm_bridge - central DRM bridge control structure */ @@ -563,6 +713,33 @@ struct drm_bridge { const struct drm_bridge_funcs *funcs; /** @driver_private: pointer to the bridge driver's internal context */ void *driver_private; + /** @ops: bitmask of operations supported by the bridge */ + enum drm_bridge_ops ops; + /** + * @type: Type of the connection at the bridge output + * (DRM_MODE_CONNECTOR_*). For bridges at the end of this chain this + * identifies the type of connected display. + */ + int type; + /** + * @ddc: Associated I2C adapter for DDC access, if any. + */ + struct i2c_adapter *ddc; + /** private: */ + /** + * @hpd_mutex: Protects the @hpd_cb and @hpd_data fields. + */ + struct mutex hpd_mutex; + /** + * @hpd_cb: Hot plug detection callback, registered with + * drm_bridge_hpd_enable(). + */ + void (*hpd_cb)(void *data, enum drm_connector_status status); + /** + * @hpd_data: Private data passed to the Hot plug detection callback + * @hpd_cb. + */ + void *hpd_data; };

static inline struct drm_bridge * @@ -669,6 +846,19 @@ drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge, u32 output_fmt, unsigned int *num_input_fmts);

+enum drm_connector_status drm_bridge_detect(struct drm_bridge *bridge); +int drm_bridge_get_modes(struct drm_bridge *bridge, + struct drm_connector *connector); +struct edid *drm_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector); +void drm_bridge_hpd_enable(struct drm_bridge *bridge, + void (*cb)(void *data, + enum drm_connector_status status), + void *data); +void drm_bridge_hpd_disable(struct drm_bridge *bridge); +void drm_bridge_hpd_notify(struct drm_bridge *bridge, + enum drm_connector_status status); + #ifdef CONFIG_DRM_PANEL_BRIDGE struct drm_bridge *drm_panel_bridge_add(struct drm_panel *panel); struct drm_bridge *drm_panel_bridge_add_typed(struct drm_panel *panel,

Most bridge drivers create a DRM connector to model the connector at the output of the bridge. This model is historical and has worked pretty well so far, but causes several issues:

- It prevents supporting more complex display pipelines where DRM connector operations are split over multiple components. For instance a pipeline with a bridge connected to the DDC signals to read EDID data, and another one connected to the HPD signal to detect connection and disconnection, will not be possible to support through this model.

- It requires every bridge driver to implement similar connector handling code, resulting in code duplication.

- It assumes that a bridge will either be wired to a connector or to another bridge, but doesn't support bridges that can be used in both positions very well (although there is some ad-hoc support for this in the analogix_dp bridge driver).

In order to solve these issues, ownership of the connector should be moved to the display controller driver (where it can be implemented using helpers provided by the core).

Extend the bridge API to allow disabling connector creation in bridge drivers as a first step towards the new model. The new flags argument to the bridge .attach() operation allows instructing the bridge driver to skip creating a connector. Unconditionally set the new flags argument to 0 for now to keep the existing behaviour, and modify all existing bridge drivers to return an error when connector creation is not requested as they don't support this feature yet.

The change is based on the following semantic patch, with manual review and edits.

@ rule1 @ identifier funcs; identifier fn; @@ struct drm_bridge_funcs funcs = { ..., .attach = fn };

@ depends on rule1 @ identifier rule1.fn; identifier bridge; statement S, S1; @@ int fn( struct drm_bridge *bridge + , enum drm_bridge_attach_flags flags ) { ... when != S + if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + S1 ... }

@ depends on rule1 @ identifier rule1.fn; identifier bridge, flags; expression E1, E2, E3; @@ int fn( struct drm_bridge *bridge, enum drm_bridge_attach_flags flags ) { <... drm_bridge_attach(E1, E2, E3 + , flags ) ...> }

@@ expression E1, E2, E3; @@ drm_bridge_attach(E1, E2, E3 + , 0 )

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Acked-by: Sam Ravnborg sam@ravnborg.org Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com Acked-by: Daniel Vetter daniel.vetter@ffwll.ch --- drivers/gpu/drm/arc/arcpgu_hdmi.c | 2 +- .../gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 2 +- drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 8 +++++++- .../drm/bridge/analogix/analogix-anx6345.c | 8 +++++++- .../drm/bridge/analogix/analogix-anx78xx.c | 8 +++++++- .../drm/bridge/analogix/analogix_dp_core.c | 10 ++++++++-- drivers/gpu/drm/bridge/cdns-dsi.c | 6 ++++-- drivers/gpu/drm/bridge/dumb-vga-dac.c | 8 +++++++- drivers/gpu/drm/bridge/lvds-codec.c | 5 +++-- .../bridge/megachips-stdpxxxx-ge-b850v3-fw.c | 8 +++++++- drivers/gpu/drm/bridge/nxp-ptn3460.c | 8 +++++++- drivers/gpu/drm/bridge/panel.c | 8 +++++++- drivers/gpu/drm/bridge/parade-ps8622.c | 8 +++++++- drivers/gpu/drm/bridge/parade-ps8640.c | 5 +++-- drivers/gpu/drm/bridge/sii902x.c | 8 +++++++- drivers/gpu/drm/bridge/sil-sii8620.c | 3 ++- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 10 ++++++++-- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 8 +++++--- drivers/gpu/drm/bridge/tc358764.c | 8 +++++++- drivers/gpu/drm/bridge/tc358767.c | 9 ++++++++- drivers/gpu/drm/bridge/tc358768.c | 6 ++++-- drivers/gpu/drm/bridge/thc63lvd1024.c | 5 +++-- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 8 +++++++- drivers/gpu/drm/bridge/ti-tfp410.c | 8 +++++++- drivers/gpu/drm/drm_bridge.c | 20 +++++++++++++++++-- drivers/gpu/drm/drm_simple_kms_helper.c | 2 +- drivers/gpu/drm/exynos/exynos_dp.c | 3 ++- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 4 ++-- drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c | 2 +- drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 2 +- drivers/gpu/drm/i2c/tda998x_drv.c | 10 ++++++++-- drivers/gpu/drm/imx/imx-ldb.c | 2 +- drivers/gpu/drm/imx/parallel-display.c | 4 ++-- drivers/gpu/drm/ingenic/ingenic-drm.c | 2 +- drivers/gpu/drm/mcde/mcde_dsi.c | 5 +++-- drivers/gpu/drm/mediatek/mtk_dpi.c | 2 +- drivers/gpu/drm/mediatek/mtk_dsi.c | 2 +- drivers/gpu/drm/mediatek/mtk_hdmi.c | 10 ++++++++-- drivers/gpu/drm/msm/dsi/dsi_manager.c | 4 ++-- drivers/gpu/drm/msm/edp/edp.c | 2 +- drivers/gpu/drm/msm/edp/edp_bridge.c | 2 +- drivers/gpu/drm/msm/hdmi/hdmi.c | 2 +- drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 2 +- drivers/gpu/drm/omapdrm/omap_drv.c | 2 +- drivers/gpu/drm/rcar-du/rcar_du_encoder.c | 2 +- drivers/gpu/drm/rcar-du/rcar_lvds.c | 11 ++++++++-- drivers/gpu/drm/rockchip/rockchip_lvds.c | 2 +- drivers/gpu/drm/rockchip/rockchip_rgb.c | 2 +- drivers/gpu/drm/sti/sti_dvo.c | 2 +- drivers/gpu/drm/sti/sti_hda.c | 2 +- drivers/gpu/drm/sti/sti_hdmi.c | 2 +- drivers/gpu/drm/stm/ltdc.c | 2 +- drivers/gpu/drm/sun4i/sun4i_lvds.c | 2 +- drivers/gpu/drm/sun4i/sun4i_rgb.c | 2 +- drivers/gpu/drm/tidss/tidss_kms.c | 2 +- drivers/gpu/drm/tilcdc/tilcdc_external.c | 2 +- drivers/gpu/drm/vc4/vc4_dpi.c | 2 +- drivers/gpu/drm/vc4/vc4_dsi.c | 2 +- include/drm/drm_bridge.h | 20 ++++++++++++++++--- 60 files changed, 231 insertions(+), 79 deletions(-)

diff --git a/drivers/gpu/drm/arc/arcpgu_hdmi.c b/drivers/gpu/drm/arc/arcpgu_hdmi.c index 8fd7094beece..52839934f2fb 100644 --- a/drivers/gpu/drm/arc/arcpgu_hdmi.c +++ b/drivers/gpu/drm/arc/arcpgu_hdmi.c @@ -40,7 +40,7 @@ int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np) return ret;

/* Link drm_bridge to encoder */ - ret = drm_bridge_attach(encoder, bridge, NULL); + ret = drm_bridge_attach(encoder, bridge, NULL, 0); if (ret) drm_encoder_cleanup(encoder);

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c index 121b62682d80..e2019fe97fff 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c @@ -114,7 +114,7 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint) }

if (bridge) { - ret = drm_bridge_attach(&output->encoder, bridge, NULL); + ret = drm_bridge_attach(&output->encoder, bridge, NULL, 0); if (!ret) return 0;

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index a275e6c91bd7..87b58c1acff4 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -847,11 +847,17 @@ static void adv7511_bridge_mode_set(struct drm_bridge *bridge, adv7511_mode_set(adv, mode, adj_mode); }

-static int adv7511_bridge_attach(struct drm_bridge *bridge) +static int adv7511_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct adv7511 *adv = bridge_to_adv7511(bridge); int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c index 0d8d083b0207..5139c3724890 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c @@ -520,11 +520,17 @@ static const struct drm_connector_funcs anx6345_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int anx6345_bridge_attach(struct drm_bridge *bridge) +static int anx6345_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct anx6345 *anx6345 = bridge_to_anx6345(bridge); int err;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c index 864423f59d66..0d5a5ad0c9ee 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c @@ -886,11 +886,17 @@ static const struct drm_connector_funcs anx78xx_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int anx78xx_bridge_attach(struct drm_bridge *bridge) +static int anx78xx_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct anx78xx *anx78xx = bridge_to_anx78xx(bridge); int err;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index dfb59a5fefea..9ded2cef57dd 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1216,13 +1216,19 @@ static const struct drm_connector_funcs analogix_dp_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int analogix_dp_bridge_attach(struct drm_bridge *bridge) +static int analogix_dp_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct analogix_dp_device *dp = bridge->driver_private; struct drm_encoder *encoder = dp->encoder; struct drm_connector *connector = NULL; int ret = 0;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; @@ -1598,7 +1604,7 @@ static int analogix_dp_create_bridge(struct drm_device *drm_dev, bridge->driver_private = dp; bridge->funcs = &analogix_dp_bridge_funcs;

- ret = drm_bridge_attach(dp->encoder, bridge, NULL); + ret = drm_bridge_attach(dp->encoder, bridge, NULL, 0); if (ret) { DRM_ERROR("failed to attach drm bridge\n"); return -EINVAL; diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c index b7c97f060241..69c3892caee5 100644 --- a/drivers/gpu/drm/bridge/cdns-dsi.c +++ b/drivers/gpu/drm/bridge/cdns-dsi.c @@ -644,7 +644,8 @@ static int cdns_dsi_check_conf(struct cdns_dsi *dsi, return 0; }

-static int cdns_dsi_bridge_attach(struct drm_bridge *bridge) +static int cdns_dsi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct cdns_dsi_input *input = bridge_to_cdns_dsi_input(bridge); struct cdns_dsi *dsi = input_to_dsi(input); @@ -656,7 +657,8 @@ static int cdns_dsi_bridge_attach(struct drm_bridge *bridge) return -ENOTSUPP; }

- return drm_bridge_attach(bridge->encoder, output->bridge, bridge); + return drm_bridge_attach(bridge->encoder, output->bridge, bridge, + flags); }

static enum drm_mode_status diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/dumb-vga-dac.c index cc33dc411b9e..ad5b5a849e43 100644 --- a/drivers/gpu/drm/bridge/dumb-vga-dac.c +++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c @@ -100,11 +100,17 @@ static const struct drm_connector_funcs dumb_vga_con_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int dumb_vga_attach(struct drm_bridge *bridge) +static int dumb_vga_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct dumb_vga *vga = drm_bridge_to_dumb_vga(bridge); int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Missing encoder\n"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c index f7ae28ed1c14..24fb1befdfa2 100644 --- a/drivers/gpu/drm/bridge/lvds-codec.c +++ b/drivers/gpu/drm/bridge/lvds-codec.c @@ -26,12 +26,13 @@ static inline struct lvds_codec *to_lvds_codec(struct drm_bridge *bridge) return container_of(bridge, struct lvds_codec, bridge); }

-static int lvds_codec_attach(struct drm_bridge *bridge) +static int lvds_codec_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct lvds_codec *lvds_codec = to_lvds_codec(bridge);

return drm_bridge_attach(bridge->encoder, lvds_codec->panel_bridge, - bridge); + bridge, flags); }

static void lvds_codec_enable(struct drm_bridge *bridge) diff --git a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c index e8a49f6146c6..6200f12a37e6 100644 --- a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c +++ b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c @@ -206,13 +206,19 @@ static irqreturn_t ge_b850v3_lvds_irq_handler(int irq, void *dev_id) return IRQ_HANDLED; }

-static int ge_b850v3_lvds_attach(struct drm_bridge *bridge) +static int ge_b850v3_lvds_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct drm_connector *connector = &ge_b850v3_lvds_ptr->connector; struct i2c_client *stdp4028_i2c = ge_b850v3_lvds_ptr->stdp4028_i2c; int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/nxp-ptn3460.c b/drivers/gpu/drm/bridge/nxp-ptn3460.c index 57ff01339559..438e566ce0a4 100644 --- a/drivers/gpu/drm/bridge/nxp-ptn3460.c +++ b/drivers/gpu/drm/bridge/nxp-ptn3460.c @@ -236,11 +236,17 @@ static const struct drm_connector_funcs ptn3460_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int ptn3460_bridge_attach(struct drm_bridge *bridge) +static int ptn3460_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge); int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 9660736ddbf3..5c92d7c9fd61 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -53,12 +53,18 @@ static const struct drm_connector_funcs panel_bridge_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int panel_bridge_attach(struct drm_bridge *bridge) +static int panel_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge); struct drm_connector *connector = &panel_bridge->connector; int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Missing encoder\n"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/parade-ps8622.c b/drivers/gpu/drm/bridge/parade-ps8622.c index 10c47c008b40..d789ea2a7fb9 100644 --- a/drivers/gpu/drm/bridge/parade-ps8622.c +++ b/drivers/gpu/drm/bridge/parade-ps8622.c @@ -476,11 +476,17 @@ static const struct drm_connector_funcs ps8622_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int ps8622_attach(struct drm_bridge *bridge) +static int ps8622_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge); int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c index c6c06688aff2..d3a53442d449 100644 --- a/drivers/gpu/drm/bridge/parade-ps8640.c +++ b/drivers/gpu/drm/bridge/parade-ps8640.c @@ -187,7 +187,8 @@ static void ps8640_post_disable(struct drm_bridge *bridge) DRM_ERROR("cannot disable regulators %d\n", ret); }

-static int ps8640_bridge_attach(struct drm_bridge *bridge) +static int ps8640_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct ps8640 *ps_bridge = bridge_to_ps8640(bridge); struct device *dev = &ps_bridge->page[0]->dev; @@ -234,7 +235,7 @@ static int ps8640_bridge_attach(struct drm_bridge *bridge)

/* Attach the panel-bridge to the dsi bridge */ return drm_bridge_attach(bridge->encoder, ps_bridge->panel_bridge, - &ps_bridge->bridge); + &ps_bridge->bridge, flags);

err_dsi_attach: mipi_dsi_device_unregister(dsi); diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index b70e8c5cf2e1..6dad025f8da7 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -399,12 +399,18 @@ static void sii902x_bridge_mode_set(struct drm_bridge *bridge, mutex_unlock(&sii902x->mutex); }

-static int sii902x_bridge_attach(struct drm_bridge *bridge) +static int sii902x_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct sii902x *sii902x = bridge_to_sii902x(bridge); struct drm_device *drm = bridge->dev; int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + drm_connector_helper_add(&sii902x->connector, &sii902x_connector_helper_funcs);

diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c index 4c0eef406eb1..92acd336aa89 100644 --- a/drivers/gpu/drm/bridge/sil-sii8620.c +++ b/drivers/gpu/drm/bridge/sil-sii8620.c @@ -2202,7 +2202,8 @@ static inline struct sii8620 *bridge_to_sii8620(struct drm_bridge *bridge) return container_of(bridge, struct sii8620, bridge); }

-static int sii8620_attach(struct drm_bridge *bridge) +static int sii8620_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct sii8620 *ctx = bridge_to_sii8620(bridge);

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 67fca439bbfb..9bad194cfd0a 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2371,7 +2371,8 @@ static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = .atomic_check = dw_hdmi_connector_atomic_check, };

-static int dw_hdmi_bridge_attach(struct drm_bridge *bridge) +static int dw_hdmi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct dw_hdmi *hdmi = bridge->driver_private; struct drm_encoder *encoder = bridge->encoder; @@ -2379,6 +2380,11 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge) struct cec_connector_info conn_info; struct cec_notifier *notifier;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + connector->interlace_allowed = 1; connector->polled = DRM_CONNECTOR_POLL_HPD;

@@ -3076,7 +3082,7 @@ struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, if (IS_ERR(hdmi)) return hdmi;

- ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL); + ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0); if (ret) { dw_hdmi_remove(hdmi); DRM_ERROR("Failed to initialize bridge with drm\n"); diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 12823ae91065..5ef0f154aa7b 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -936,7 +936,8 @@ dw_mipi_dsi_bridge_mode_valid(struct drm_bridge *bridge, return mode_status; }

-static int dw_mipi_dsi_bridge_attach(struct drm_bridge *bridge) +static int dw_mipi_dsi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);

@@ -949,7 +950,8 @@ static int dw_mipi_dsi_bridge_attach(struct drm_bridge *bridge) bridge->encoder->encoder_type = DRM_MODE_ENCODER_DSI;

/* Attach the panel-bridge to the dsi bridge */ - return drm_bridge_attach(bridge->encoder, dsi->panel_bridge, bridge); + return drm_bridge_attach(bridge->encoder, dsi->panel_bridge, bridge, + flags); }

static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = { @@ -1120,7 +1122,7 @@ int dw_mipi_dsi_bind(struct dw_mipi_dsi *dsi, struct drm_encoder *encoder) { int ret;

- ret = drm_bridge_attach(encoder, &dsi->bridge, NULL); + ret = drm_bridge_attach(encoder, &dsi->bridge, NULL, 0); if (ret) { DRM_ERROR("Failed to initialize bridge with drm\n"); return ret; diff --git a/drivers/gpu/drm/bridge/tc358764.c b/drivers/gpu/drm/bridge/tc358764.c index 96207fcfde19..283e4a8dd923 100644 --- a/drivers/gpu/drm/bridge/tc358764.c +++ b/drivers/gpu/drm/bridge/tc358764.c @@ -349,12 +349,18 @@ static void tc358764_enable(struct drm_bridge *bridge) dev_err(ctx->dev, "error enabling panel (%d)\n", ret); }

-static int tc358764_attach(struct drm_bridge *bridge) +static int tc358764_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct tc358764 *ctx = bridge_to_tc358764(bridge); struct drm_device *drm = bridge->dev; int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + ctx->connector.polled = DRM_CONNECTOR_POLL_HPD; ret = drm_connector_init(drm, &ctx->connector, &tc358764_connector_funcs, diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 3709e5ace724..402a690d1fe5 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -31,6 +31,7 @@ #include <drm/drm_edid.h> #include <drm/drm_of.h> #include <drm/drm_panel.h> +#include <drm/drm_print.h> #include <drm/drm_probe_helper.h>

/* Registers */ @@ -1403,13 +1404,19 @@ static const struct drm_connector_funcs tc_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int tc_bridge_attach(struct drm_bridge *bridge) +static int tc_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; struct tc_data *tc = bridge_to_tc(bridge); struct drm_device *drm = bridge->dev; int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + /* Create DP/eDP connector */ drm_connector_helper_add(&tc->connector, &tc_connector_helper_funcs); ret = drm_connector_init(drm, &tc->connector, &tc_connector_funcs, diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c index da7af03256f6..1b39e8d37834 100644 --- a/drivers/gpu/drm/bridge/tc358768.c +++ b/drivers/gpu/drm/bridge/tc358768.c @@ -511,7 +511,8 @@ static const struct mipi_dsi_host_ops tc358768_dsi_host_ops = { .transfer = tc358768_dsi_host_transfer, };

-static int tc358768_bridge_attach(struct drm_bridge *bridge) +static int tc358768_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct tc358768_priv *priv = bridge_to_tc358768(bridge);

@@ -520,7 +521,8 @@ static int tc358768_bridge_attach(struct drm_bridge *bridge) return -ENOTSUPP; }

- return drm_bridge_attach(bridge->encoder, priv->output.bridge, bridge); + return drm_bridge_attach(bridge->encoder, priv->output.bridge, bridge, + flags); }

static enum drm_mode_status diff --git a/drivers/gpu/drm/bridge/thc63lvd1024.c b/drivers/gpu/drm/bridge/thc63lvd1024.c index 3d74129b2995..97d8129760e9 100644 --- a/drivers/gpu/drm/bridge/thc63lvd1024.c +++ b/drivers/gpu/drm/bridge/thc63lvd1024.c @@ -42,11 +42,12 @@ static inline struct thc63_dev *to_thc63(struct drm_bridge *bridge) return container_of(bridge, struct thc63_dev, bridge); }

-static int thc63_attach(struct drm_bridge *bridge) +static int thc63_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct thc63_dev *thc63 = to_thc63(bridge);

- return drm_bridge_attach(bridge->encoder, thc63->next, bridge); + return drm_bridge_attach(bridge->encoder, thc63->next, bridge, flags); }

static enum drm_mode_status thc63_mode_valid(struct drm_bridge *bridge, diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 6ce60a64b603..6ad688b320ae 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -266,7 +266,8 @@ static int ti_sn_bridge_parse_regulators(struct ti_sn_bridge *pdata) pdata->supplies); }

-static int ti_sn_bridge_attach(struct drm_bridge *bridge) +static int ti_sn_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { int ret, val; struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge); @@ -277,6 +278,11 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge) .node = NULL, };

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + ret = drm_connector_init(bridge->dev, &pdata->connector, &ti_sn_bridge_connector_funcs, DRM_MODE_CONNECTOR_eDP); diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index 108e8cd7ab68..193c9368f664 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -118,11 +118,17 @@ static const struct drm_connector_funcs tfp410_con_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };

-static int tfp410_attach(struct drm_bridge *bridge) +static int tfp410_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct tfp410 *dvi = drm_bridge_to_tfp410(bridge); int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + if (!bridge->encoder) { dev_err(dvi->dev, "Missing encoder\n"); return -ENODEV; diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 5a8f7d7e05f3..96eace94fea8 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -149,6 +149,7 @@ static const struct drm_private_state_funcs drm_bridge_priv_state_funcs = { * @encoder: DRM encoder * @bridge: bridge to attach * @previous: previous bridge in the chain (optional) + * @flags: DRM_BRIDGE_ATTACH_* flags * * Called by a kms driver to link the bridge to an encoder's chain. The previous * argument specifies the previous bridge in the chain. If NULL, the bridge is @@ -166,7 +167,8 @@ static const struct drm_private_state_funcs drm_bridge_priv_state_funcs = { * Zero on success, error code on failure */ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, - struct drm_bridge *previous) + struct drm_bridge *previous, + enum drm_bridge_attach_flags flags) { int ret;

@@ -188,7 +190,7 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, list_add(&bridge->chain_node, &encoder->bridge_chain);

if (bridge->funcs->attach) { - ret = bridge->funcs->attach(bridge); + ret = bridge->funcs->attach(bridge, flags); if (ret < 0) goto err_reset_bridge; } @@ -312,6 +314,20 @@ void drm_bridge_detach(struct drm_bridge *bridge) * allows providing a single static const &drm_bridge_funcs instance in * bridge drivers, improving security by storing function pointers in * read-only memory. + * + * In order to ease transition, bridge drivers may support both the old and + * new models by making connector creation optional and implementing the + * connected-related bridge operations. Connector creation is then controlled + * by the flags argument to the drm_bridge_attach() function. Display drivers + * that support the new model and create connectors themselves shall set the + * %DRM_BRIDGE_ATTACH_NO_CONNECTOR flag, and bridge drivers shall then skip + * connector creation. For intermediate bridges in the chain, the flag shall + * be passed to the drm_bridge_attach() call for the downstream bridge. + * Bridge drivers that implement the new model only shall return an error + * from their &drm_bridge_funcs.attach handler when the + * %DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is not set. New display drivers + * should use the new model, and convert the bridge drivers they use if + * needed, in order to gradually transition to the new model. */

/** diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c index 15fb516ae2d8..8ff4504161d5 100644 --- a/drivers/gpu/drm/drm_simple_kms_helper.c +++ b/drivers/gpu/drm/drm_simple_kms_helper.c @@ -229,7 +229,7 @@ static const struct drm_plane_funcs drm_simple_kms_plane_funcs = { int drm_simple_display_pipe_attach_bridge(struct drm_simple_display_pipe *pipe, struct drm_bridge *bridge) { - return drm_bridge_attach(&pipe->encoder, bridge, NULL); + return drm_bridge_attach(&pipe->encoder, bridge, NULL, 0); } EXPORT_SYMBOL(drm_simple_display_pipe_attach_bridge);

diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c index 4785885c0f4f..d23d3502ca91 100644 --- a/drivers/gpu/drm/exynos/exynos_dp.c +++ b/drivers/gpu/drm/exynos/exynos_dp.c @@ -106,7 +106,8 @@ static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data,

/* Pre-empt DP connector creation if there's a bridge */ if (dp->ptn_bridge) { - ret = drm_bridge_attach(&dp->encoder, dp->ptn_bridge, bridge); + ret = drm_bridge_attach(&dp->encoder, dp->ptn_bridge, bridge, + 0); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to attach bridge to drm\n"); diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 33628d85edad..669d3857502a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1540,7 +1540,7 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host,

out_bridge = of_drm_find_bridge(device->dev.of_node); if (out_bridge) { - drm_bridge_attach(encoder, out_bridge, NULL); + drm_bridge_attach(encoder, out_bridge, NULL, 0); dsi->out_bridge = out_bridge; list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain); } else { @@ -1717,7 +1717,7 @@ static int exynos_dsi_bind(struct device *dev, struct device *master, if (dsi->in_bridge_node) { in_bridge = of_drm_find_bridge(dsi->in_bridge_node); if (in_bridge) - drm_bridge_attach(encoder, in_bridge, NULL); + drm_bridge_attach(encoder, in_bridge, NULL, 0); }

return mipi_dsi_host_register(&dsi->dsi_host); diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 9ff921f43a93..3e5f1a77286d 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -960,7 +960,7 @@ static int hdmi_create_connector(struct drm_encoder *encoder) drm_connector_attach_encoder(connector, encoder);

if (hdata->bridge) { - ret = drm_bridge_attach(encoder, hdata->bridge, NULL); + ret = drm_bridge_attach(encoder, hdata->bridge, NULL, 0); if (ret) DRM_DEV_ERROR(hdata->dev, "Failed to attach bridge\n"); } diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c index 9598ee3cc4d2..cff344367f81 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c @@ -151,5 +151,5 @@ int fsl_dcu_create_outputs(struct fsl_dcu_drm_device *fsl_dev) return fsl_dcu_attach_panel(fsl_dev, panel); }

- return drm_bridge_attach(&fsl_dev->encoder, bridge, NULL); + return drm_bridge_attach(&fsl_dev->encoder, bridge, NULL, 0); } diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c index bdcf9c6ae9e9..f31068d74b18 100644 --- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c +++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c @@ -777,7 +777,7 @@ static int dsi_bridge_init(struct drm_device *dev, struct dw_dsi *dsi) int ret;

/* associate the bridge to dsi encoder */ - ret = drm_bridge_attach(encoder, bridge, NULL); + ret = drm_bridge_attach(encoder, bridge, NULL, 0); if (ret) { DRM_ERROR("failed to attach external bridge\n"); return ret; diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index a63790d32d75..c3332209f27a 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -1356,10 +1356,16 @@ static int tda998x_connector_init(struct tda998x_priv *priv,

/* DRM bridge functions */

-static int tda998x_bridge_attach(struct drm_bridge *bridge) +static int tda998x_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct tda998x_priv *priv = bridge_to_tda998x_priv(bridge);

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + return tda998x_connector_init(priv, bridge->dev); }

@@ -2022,7 +2028,7 @@ static int tda998x_encoder_init(struct device *dev, struct drm_device *drm) if (ret) goto err_encoder;

- ret = drm_bridge_attach(&priv->encoder, &priv->bridge, NULL); + ret = drm_bridge_attach(&priv->encoder, &priv->bridge, NULL, 0); if (ret) goto err_bridge;

diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c index 8cb2665b2c74..4da22a94790c 100644 --- a/drivers/gpu/drm/imx/imx-ldb.c +++ b/drivers/gpu/drm/imx/imx-ldb.c @@ -446,7 +446,7 @@ static int imx_ldb_register(struct drm_device *drm,

if (imx_ldb_ch->bridge) { ret = drm_bridge_attach(&imx_ldb_ch->encoder, - imx_ldb_ch->bridge, NULL); + imx_ldb_ch->bridge, NULL, 0); if (ret) { DRM_ERROR("Failed to initialize bridge with drm\n"); return ret; diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index 142acff5ab37..08fafa4bf8c2 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -292,7 +292,7 @@ static int imx_pd_register(struct drm_device *drm, DRM_MODE_ENCODER_NONE, NULL);

imxpd->bridge.funcs = &imx_pd_bridge_funcs; - drm_bridge_attach(encoder, &imxpd->bridge, NULL); + drm_bridge_attach(encoder, &imxpd->bridge, NULL, 0);

if (!imxpd->next_bridge) { drm_connector_helper_add(&imxpd->connector, @@ -307,7 +307,7 @@ static int imx_pd_register(struct drm_device *drm,

if (imxpd->next_bridge) { ret = drm_bridge_attach(encoder, imxpd->next_bridge, - &imxpd->bridge); + &imxpd->bridge, 0); if (ret < 0) { dev_err(imxpd->dev, "failed to attach bridge: %d\n", ret); diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c index 6d47ef7b148c..9dfe7cb530e1 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c @@ -737,7 +737,7 @@ static int ingenic_drm_probe(struct platform_device *pdev) return ret; }

- ret = drm_bridge_attach(&priv->encoder, bridge, NULL); + ret = drm_bridge_attach(&priv->encoder, bridge, NULL, 0); if (ret) { dev_err(dev, "Unable to attach bridge"); return ret; diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c index bb6528b01cd0..7af5ebb0c436 100644 --- a/drivers/gpu/drm/mcde/mcde_dsi.c +++ b/drivers/gpu/drm/mcde/mcde_dsi.c @@ -986,7 +986,8 @@ static void mcde_dsi_bridge_disable(struct drm_bridge *bridge) clk_disable_unprepare(d->lp_clk); }

-static int mcde_dsi_bridge_attach(struct drm_bridge *bridge) +static int mcde_dsi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct mcde_dsi *d = bridge_to_mcde_dsi(bridge); struct drm_device *drm = bridge->dev; @@ -998,7 +999,7 @@ static int mcde_dsi_bridge_attach(struct drm_bridge *bridge) }

/* Attach the DSI bridge to the output (panel etc) bridge */ - ret = drm_bridge_attach(bridge->encoder, d->bridge_out, bridge); + ret = drm_bridge_attach(bridge->encoder, d->bridge_out, bridge, flags); if (ret) { dev_err(d->dev, "failed to attach the DSI bridge\n"); return ret; diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 01fa8b8d763d..14fbe1c09ce9 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -607,7 +607,7 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data) /* Currently DPI0 is fixed to be driven by OVL1 */ dpi->encoder.possible_crtcs = BIT(1);

- ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL); + ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL, 0); if (ret) { dev_err(dev, "Failed to attach bridge: %d\n", ret); goto err_cleanup; diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 5fa1073cf26b..0ede69830a9d 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -904,7 +904,7 @@ static int mtk_dsi_create_conn_enc(struct drm_device *drm, struct mtk_dsi *dsi)

/* If there's a bridge, attach to it and let it create the connector */ if (dsi->bridge) { - ret = drm_bridge_attach(&dsi->encoder, dsi->bridge, NULL); + ret = drm_bridge_attach(&dsi->encoder, dsi->bridge, NULL, 0); if (ret) { DRM_ERROR("Failed to attach bridge to drm\n"); goto err_encoder_cleanup; diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 5e4a4dbda443..a8b20557539b 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1297,11 +1297,17 @@ static void mtk_hdmi_hpd_event(bool hpd, struct device *dev) * Bridge callbacks */

-static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge) +static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); int ret;

+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + ret = drm_connector_init_with_ddc(bridge->encoder->dev, &hdmi->conn, &mtk_hdmi_connector_funcs, DRM_MODE_CONNECTOR_HDMIA, @@ -1326,7 +1332,7 @@ static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge)

if (hdmi->next_bridge) { ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge, - bridge); + bridge, flags); if (ret) { dev_err(hdmi->dev, "Failed to attach external bridge: %d\n", ret); diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 104115d112eb..6af26ab5b09d 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -684,7 +684,7 @@ struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) bridge = &dsi_bridge->base; bridge->funcs = &dsi_mgr_bridge_funcs;

- ret = drm_bridge_attach(encoder, bridge, NULL); + ret = drm_bridge_attach(encoder, bridge, NULL, 0); if (ret) goto fail;

@@ -713,7 +713,7 @@ struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) encoder = msm_dsi->encoder;

/* link the internal dsi bridge to the external bridge */ - drm_bridge_attach(encoder, ext_bridge, int_bridge); + drm_bridge_attach(encoder, ext_bridge, int_bridge, 0);

/* * we need the drm_connector created by the external bridge diff --git a/drivers/gpu/drm/msm/edp/edp.c b/drivers/gpu/drm/msm/edp/edp.c index ad4e963ccd9b..a78d6077802b 100644 --- a/drivers/gpu/drm/msm/edp/edp.c +++ b/drivers/gpu/drm/msm/edp/edp.c @@ -178,7 +178,7 @@ int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev, goto fail; }

- ret = drm_bridge_attach(encoder, edp->bridge, NULL); + ret = drm_bridge_attach(encoder, edp->bridge, NULL, 0); if (ret) goto fail;

diff --git a/drivers/gpu/drm/msm/edp/edp_bridge.c b/drivers/gpu/drm/msm/edp/edp_bridge.c index b65b5cc2dba2..c69a37e0c708 100644 --- a/drivers/gpu/drm/msm/edp/edp_bridge.c +++ b/drivers/gpu/drm/msm/edp/edp_bridge.c @@ -97,7 +97,7 @@ struct drm_bridge *msm_edp_bridge_init(struct msm_edp *edp) bridge = &edp_bridge->base; bridge->funcs = &edp_bridge_funcs;

- ret = drm_bridge_attach(edp->encoder, bridge, NULL); + ret = drm_bridge_attach(edp->encoder, bridge, NULL, 0); if (ret) goto fail;

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 1a9b6289637d..3a8646535c14 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -327,7 +327,7 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi, goto fail; }

- ret = drm_bridge_attach(encoder, hdmi->bridge, NULL); + ret = drm_bridge_attach(encoder, hdmi->bridge, NULL, 0); if (ret) goto fail;

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c index ba81338a9bf8..6e380db9287b 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c @@ -287,7 +287,7 @@ struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi) bridge = &hdmi_bridge->base; bridge->funcs = &msm_hdmi_bridge_funcs;

- ret = drm_bridge_attach(hdmi->encoder, bridge, NULL); + ret = drm_bridge_attach(hdmi->encoder, bridge, NULL, 0); if (ret) goto fail;

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index d2750f60f519..390e0662a8b8 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -297,7 +297,7 @@ static int omap_modeset_init(struct drm_device *dev)

if (pipe->output->bridge) { ret = drm_bridge_attach(pipe->encoder, - pipe->output->bridge, NULL); + pipe->output->bridge, NULL, 0); if (ret < 0) return ret; } diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c index 3cd83a030a04..c07c6a88aff0 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c @@ -121,7 +121,7 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu, * Attach the bridge to the encoder. The bridge will create the * connector. */ - ret = drm_bridge_attach(encoder, bridge, NULL); + ret = drm_bridge_attach(encoder, bridge, NULL, 0); if (ret) { drm_encoder_cleanup(encoder); return ret; diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c index 06432c881e07..ab0d49618cf9 100644 --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c @@ -23,6 +23,7 @@ #include <drm/drm_bridge.h> #include <drm/drm_of.h> #include <drm/drm_panel.h> +#include <drm/drm_print.h> #include <drm/drm_probe_helper.h>

#include "rcar_lvds.h" @@ -643,7 +644,8 @@ static bool rcar_lvds_mode_fixup(struct drm_bridge *bridge, return true; }

-static int rcar_lvds_attach(struct drm_bridge *bridge) +static int rcar_lvds_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) { struct rcar_lvds *lvds = bridge_to_rcar_lvds(bridge); struct drm_connector *connector = &lvds->connector; @@ -653,7 +655,12 @@ static int rcar_lvds_attach(struct drm_bridge *bridge) /* If we have a next bridge just attach it. */ if (lvds->next_bridge) return drm_bridge_attach(bridge->encoder, lvds->next_bridge, - bridge); + bridge, flags); + + if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + }

/* Otherwise if we have a panel, create a connector. */ if (!lvds->panel) diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c index f25a36743cbd..449a62908d21 100644 --- a/drivers/gpu/drm/rockchip/rockchip_lvds.c +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -646,7 +646,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master, goto err_free_connector; } } else { - ret = drm_bridge_attach(encoder, lvds->bridge, NULL); + ret = drm_bridge_attach(encoder, lvds->bridge, NULL, 0); if (ret) { DRM_DEV_ERROR(drm_dev->dev, "failed to attach bridge: %d\n", ret); diff --git a/drivers/gpu/drm/rockchip/rockchip_rgb.c b/drivers/gpu/drm/rockchip/rockchip_rgb.c index ae730275a34f..3e2484985955 100644 --- a/drivers/gpu/drm/rockchip/rockchip_rgb.c +++ b/drivers/gpu/drm/rockchip/rockchip_rgb.c @@ -144,7 +144,7 @@ struct rockchip_rgb *rockchip_rgb_init(struct device *dev,

rgb->bridge = bridge;

- ret = drm_bridge_attach(encoder, rgb->bridge, NULL); + ret = drm_bridge_attach(encoder, rgb->bridge, NULL, 0); if (ret) { DRM_DEV_ERROR(drm_dev->dev, "failed to attach bridge: %d\n", ret); diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c index b2778ec1cdd7..3d04bfca21a0 100644 --- a/drivers/gpu/drm/sti/sti_dvo.c +++ b/drivers/gpu/drm/sti/sti_dvo.c @@ -467,7 +467,7 @@ static int sti_dvo_bind(struct device *dev, struct device *master, void *data) bridge->of_node = dvo->dev.of_node; drm_bridge_add(bridge);

- err = drm_bridge_attach(encoder, bridge, NULL); + err = drm_bridge_attach(encoder, bridge, NULL, 0); if (err) { DRM_ERROR("Failed to attach bridge\n"); return err; diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c index 2bb32009d117..f3f28d79b0e4 100644 --- a/drivers/gpu/drm/sti/sti_hda.c +++ b/drivers/gpu/drm/sti/sti_hda.c @@ -701,7 +701,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)

bridge->driver_private = hda; bridge->funcs = &sti_hda_bridge_funcs; - drm_bridge_attach(encoder, bridge, NULL); + drm_bridge_attach(encoder, bridge, NULL, 0);

connector->encoder = encoder;

diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 64ed102033c8..18eaf786ffa4 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -1281,7 +1281,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)

bridge->driver_private = hdmi; bridge->funcs = &sti_hdmi_bridge_funcs; - drm_bridge_attach(encoder, bridge, NULL); + drm_bridge_attach(encoder, bridge, NULL, 0);

connector->encoder = encoder;

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 99bf93e8b36f..df585fe64f61 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1109,7 +1109,7 @@ static int ltdc_encoder_init(struct drm_device *ddev, struct drm_bridge *bridge)

drm_encoder_helper_add(encoder, &ltdc_encoder_helper_funcs);

- ret = drm_bridge_attach(encoder, bridge, NULL); + ret = drm_bridge_attach(encoder, bridge, NULL, 0); if (ret) { drm_encoder_cleanup(encoder); return -EINVAL; diff --git a/drivers/gpu/drm/sun4i/sun4i_lvds.c b/drivers/gpu/drm/sun4i/sun4i_lvds.c index 65b7a8739666..26e5c7ceb8ff 100644 --- a/drivers/gpu/drm/sun4i/sun4i_lvds.c +++ b/drivers/gpu/drm/sun4i/sun4i_lvds.c @@ -156,7 +156,7 @@ int sun4i_lvds_init(struct drm_device *drm, struct sun4i_tcon *tcon) }

if (bridge) { - ret = drm_bridge_attach(encoder, bridge, NULL); + ret = drm_bridge_attach(encoder, bridge, NULL, 0); if (ret) { dev_err(drm->dev, "Couldn't attach our bridge\n"); goto err_cleanup_connector; diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c index b27f16af50f5..3b23d5be3cf3 100644 --- a/drivers/gpu/drm/sun4i/sun4i_rgb.c +++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c @@ -253,7 +253,7 @@ int sun4i_rgb_init(struct drm_device *drm, struct sun4i_tcon *tcon) }

if (rgb->bridge) { - ret = drm_bridge_attach(encoder, rgb->bridge, NULL); + ret = drm_bridge_attach(encoder, rgb->bridge, NULL, 0); if (ret) { dev_err(drm->dev, "Couldn't attach our bridge\n"); goto err_cleanup_connector; diff --git a/drivers/gpu/drm/tidss/tidss_kms.c b/drivers/gpu/drm/tidss/tidss_kms.c index 5311e0f1c551..3b6f8d54a016 100644 --- a/drivers/gpu/drm/tidss/tidss_kms.c +++ b/drivers/gpu/drm/tidss/tidss_kms.c @@ -172,7 +172,7 @@ static int tidss_dispc_modeset_init(struct tidss_device *tidss) return PTR_ERR(enc); }

- ret = drm_bridge_attach(enc, pipes[i].bridge, NULL); + ret = drm_bridge_attach(enc, pipes[i].bridge, NULL, 0); if (ret) { dev_err(tidss->dev, "bridge attach failed: %d\n", ret); return ret; diff --git a/drivers/gpu/drm/tilcdc/tilcdc_external.c b/drivers/gpu/drm/tilcdc/tilcdc_external.c index 51d034e095f4..28b7f703236e 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_external.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_external.c @@ -95,7 +95,7 @@ int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge)

priv->external_encoder->possible_crtcs = BIT(0);

- ret = drm_bridge_attach(priv->external_encoder, bridge, NULL); + ret = drm_bridge_attach(priv->external_encoder, bridge, NULL, 0); if (ret) { dev_err(ddev->dev, "drm_bridge_attach() failed %d\n", ret); return ret; diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c index c586325de2a5..6dfede03396e 100644 --- a/drivers/gpu/drm/vc4/vc4_dpi.c +++ b/drivers/gpu/drm/vc4/vc4_dpi.c @@ -252,7 +252,7 @@ static int vc4_dpi_init_bridge(struct vc4_dpi *dpi) bridge = drm_panel_bridge_add_typed(panel, DRM_MODE_CONNECTOR_DPI);

- return drm_bridge_attach(dpi->encoder, bridge, NULL); + return drm_bridge_attach(dpi->encoder, bridge, NULL, 0); }

static int vc4_dpi_bind(struct device *dev, struct device *master, void *data) diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c index fd8a2eb60505..d99b1d526651 100644 --- a/drivers/gpu/drm/vc4/vc4_dsi.c +++ b/drivers/gpu/drm/vc4/vc4_dsi.c @@ -1619,7 +1619,7 @@ static int vc4_dsi_bind(struct device *dev, struct device *master, void *data) DRM_MODE_ENCODER_DSI, NULL); drm_encoder_helper_add(dsi->encoder, &vc4_dsi_encoder_helper_funcs);

- ret = drm_bridge_attach(dsi->encoder, dsi->bridge, NULL); + ret = drm_bridge_attach(dsi->encoder, dsi->bridge, NULL, 0); if (ret) { dev_err(dev, "bridge attach failed: %d\n", ret); return ret; diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 018e195c4808..ea2aa5ebae34 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -39,6 +39,17 @@ struct drm_panel; struct edid; struct i2c_adapter;

+/** + * enum drm_bridge_attach_flags - Flags for &drm_bridge_funcs.attach + */ +enum drm_bridge_attach_flags { + /** + * @DRM_BRIDGE_ATTACH_NO_CONNECTOR: When this flag is set the bridge + * shall not create a drm_connector. + */ + DRM_BRIDGE_ATTACH_NO_CONNECTOR = BIT(0), +}; + /** * struct drm_bridge_funcs - drm_bridge control functions */ @@ -47,7 +58,8 @@ struct drm_bridge_funcs { * @attach: * * This callback is invoked whenever our bridge is being attached to a - * &drm_encoder. + * &drm_encoder. The flags argument tunes the behaviour of the attach + * operation (see DRM_BRIDGE_ATTACH_*). * * The @attach callback is optional. * @@ -55,7 +67,8 @@ struct drm_bridge_funcs { * * Zero on success, error code on failure. */ - int (*attach)(struct drm_bridge *bridge); + int (*attach)(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags);

/** * @detach: @@ -757,7 +770,8 @@ void drm_bridge_add(struct drm_bridge *bridge); void drm_bridge_remove(struct drm_bridge *bridge); struct drm_bridge *of_drm_find_bridge(struct device_node *np); int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, - struct drm_bridge *previous); + struct drm_bridge *previous, + enum drm_bridge_attach_flags flags);

/** * drm_bridge_get_next_bridge() - Get the next bridge in the chain

The dumb-vga-dac driver can support simple DRM bridges without being limited to VGA DACs. Rename it to simple-bridge.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Andrzej Hajda a.hajda@samsung.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Acked-by: Maxime Ripard mripard@kernel.org Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- arch/arm/configs/davinci_all_defconfig | 2 +- arch/arm/configs/integrator_defconfig | 2 +- arch/arm/configs/multi_v7_defconfig | 2 +- arch/arm/configs/shmobile_defconfig | 2 +- arch/arm/configs/sunxi_defconfig | 2 +- arch/arm/configs/versatile_defconfig | 2 +- drivers/gpu/drm/bridge/Kconfig | 16 ++++++++-------- drivers/gpu/drm/bridge/Makefile | 2 +- .../bridge/{dumb-vga-dac.c => simple-bridge.c} | 2 +- 9 files changed, 16 insertions(+), 16 deletions(-) rename drivers/gpu/drm/bridge/{dumb-vga-dac.c => simple-bridge.c} (99%)

diff --git a/arch/arm/configs/davinci_all_defconfig b/arch/arm/configs/davinci_all_defconfig index b5ba8d731a25..e849367c0566 100644 --- a/arch/arm/configs/davinci_all_defconfig +++ b/arch/arm/configs/davinci_all_defconfig @@ -158,7 +158,7 @@ CONFIG_VIDEO_TVP514X=m CONFIG_VIDEO_ADV7343=m CONFIG_DRM=m CONFIG_DRM_TILCDC=m -CONFIG_DRM_DUMB_VGA_DAC=m +CONFIG_DRM_SIMPLE_BRIDGE=m CONFIG_DRM_TINYDRM=m CONFIG_TINYDRM_ST7586=m CONFIG_FB=y diff --git a/arch/arm/configs/integrator_defconfig b/arch/arm/configs/integrator_defconfig index 2f0a762dc3a0..a9755c501bec 100644 --- a/arch/arm/configs/integrator_defconfig +++ b/arch/arm/configs/integrator_defconfig @@ -55,7 +55,7 @@ CONFIG_SMC91X=y # CONFIG_KEYBOARD_ATKBD is not set # CONFIG_SERIO_SERPORT is not set CONFIG_DRM=y -CONFIG_DRM_DUMB_VGA_DAC=y +CONFIG_DRM_SIMPLE_BRIDGE=y CONFIG_DRM_PL111=y CONFIG_FB_MODE_HELPERS=y CONFIG_FB_MATROX=y diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 017d65f86eba..0b020863abdb 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -670,11 +670,11 @@ CONFIG_DRM_PANEL_ORISETECH_OTM8009A=m CONFIG_DRM_PANEL_RAYDIUM_RM68200=m CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03=m CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0=m -CONFIG_DRM_DUMB_VGA_DAC=m CONFIG_DRM_NXP_PTN3460=m CONFIG_DRM_PARADE_PS8622=m CONFIG_DRM_SII902X=m CONFIG_DRM_SII9234=m +CONFIG_DRM_SIMPLE_BRIDGE=m CONFIG_DRM_TOSHIBA_TC358764=m CONFIG_DRM_I2C_ADV7511=m CONFIG_DRM_I2C_ADV7511_AUDIO=y diff --git a/arch/arm/configs/shmobile_defconfig b/arch/arm/configs/shmobile_defconfig index 64fa849f8bbe..838307a9bb92 100644 --- a/arch/arm/configs/shmobile_defconfig +++ b/arch/arm/configs/shmobile_defconfig @@ -125,9 +125,9 @@ CONFIG_VIDEO_ML86V7667=y CONFIG_DRM=y CONFIG_DRM_RCAR_DU=y CONFIG_DRM_PANEL_SIMPLE=y -CONFIG_DRM_DUMB_VGA_DAC=y CONFIG_DRM_LVDS_CODEC=y CONFIG_DRM_SII902X=y +CONFIG_DRM_SIMPLE_BRIDGE=y CONFIG_DRM_I2C_ADV7511=y CONFIG_DRM_I2C_ADV7511_AUDIO=y CONFIG_FB_SH_MOBILE_LCDC=y diff --git a/arch/arm/configs/sunxi_defconfig b/arch/arm/configs/sunxi_defconfig index e9fb57374b9f..61b8be19e527 100644 --- a/arch/arm/configs/sunxi_defconfig +++ b/arch/arm/configs/sunxi_defconfig @@ -101,7 +101,7 @@ CONFIG_RC_DEVICES=y CONFIG_IR_SUNXI=y CONFIG_DRM=y CONFIG_DRM_SUN4I=y -CONFIG_DRM_DUMB_VGA_DAC=y +CONFIG_DRM_SIMPLE_BRIDGE=y CONFIG_FB_SIMPLE=y CONFIG_SOUND=y CONFIG_SND=y diff --git a/arch/arm/configs/versatile_defconfig b/arch/arm/configs/versatile_defconfig index fe4d4b596585..767935337413 100644 --- a/arch/arm/configs/versatile_defconfig +++ b/arch/arm/configs/versatile_defconfig @@ -59,7 +59,7 @@ CONFIG_GPIO_PL061=y CONFIG_DRM=y CONFIG_DRM_PANEL_ARM_VERSATILE=y CONFIG_DRM_PANEL_SIMPLE=y -CONFIG_DRM_DUMB_VGA_DAC=y +CONFIG_DRM_SIMPLE_BRIDGE=y CONFIG_DRM_PL111=y CONFIG_FB_MODE_HELPERS=y CONFIG_BACKLIGHT_CLASS_DEVICE=y diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 20a439199cb8..10073ad88283 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -27,14 +27,6 @@ config DRM_CDNS_DSI Support Cadence DPI to DSI bridge. This is an internal bridge and is meant to be directly embedded in a SoC.

-config DRM_DUMB_VGA_DAC - tristate "Dumb VGA DAC Bridge support" - depends on OF - select DRM_KMS_HELPER - help - Support for non-programmable RGB to VGA DAC bridges, such as ADI - ADV7123, TI THS8134 and THS8135 or passive resistor ladder DACs. - config DRM_LVDS_CODEC tristate "Transparent LVDS encoders and decoders support" depends on OF @@ -110,6 +102,14 @@ config DRM_SII9234 It is an I2C driver, that detects connection of MHL bridge and starts encapsulation of HDMI signal.

+config DRM_SIMPLE_BRIDGE + tristate "Simple DRM bridge support" + depends on OF + select DRM_KMS_HELPER + help + Support for non-programmable DRM bridges, such as ADI ADV7123, TI + THS8134 and THS8135 or passive resistor ladder DACs. + config DRM_THINE_THC63LVD1024 tristate "Thine THC63LVD1024 LVDS decoder bridge" depends on OF diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index b0d5c3af0b5a..b6b2e7029a78 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -1,6 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o -obj-$(CONFIG_DRM_DUMB_VGA_DAC) += dumb-vga-dac.o obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v3-fw.o obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o @@ -9,6 +8,7 @@ obj-$(CONFIG_DRM_PARADE_PS8640) += parade-ps8640.o obj-$(CONFIG_DRM_SIL_SII8620) += sil-sii8620.o obj-$(CONFIG_DRM_SII902X) += sii902x.o obj-$(CONFIG_DRM_SII9234) += sii9234.o +obj-$(CONFIG_DRM_SIMPLE_BRIDGE) += simple-bridge.o obj-$(CONFIG_DRM_THINE_THC63LVD1024) += thc63lvd1024.o obj-$(CONFIG_DRM_TOSHIBA_TC358764) += tc358764.o obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/simple-bridge.c similarity index 99% rename from drivers/gpu/drm/bridge/dumb-vga-dac.c rename to drivers/gpu/drm/bridge/simple-bridge.c index 7287be2d3220..00d810c99193 100644 --- a/drivers/gpu/drm/bridge/dumb-vga-dac.c +++ b/drivers/gpu/drm/bridge/simple-bridge.c @@ -295,7 +295,7 @@ static struct platform_driver simple_bridge_driver = { .probe = simple_bridge_probe, .remove = simple_bridge_remove, .driver = { - .name = "dumb-vga-dac", + .name = "simple-bridge", .of_match_table = simple_bridge_match, }, };

If an enable GPIO is declared in the firmware, assert it when enabling the bridge and deassert it when disabling it.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Andrzej Hajda a.hajda@samsung.com Reviewed-by: Stefan Agner stefan@agner.ch Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Reviewed-by: Maxime Ripard mripard@kernel.org Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/bridge/simple-bridge.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/simple-bridge.c b/drivers/gpu/drm/bridge/simple-bridge.c index 20866c1230de..70e6092bdf6c 100644 --- a/drivers/gpu/drm/bridge/simple-bridge.c +++ b/drivers/gpu/drm/bridge/simple-bridge.c @@ -6,6 +6,7 @@ * Maxime Ripard maxime.ripard@free-electrons.com */

+#include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/of_graph.h> @@ -30,6 +31,7 @@ struct simple_bridge {

struct i2c_adapter *ddc; struct regulator *vdd; + struct gpio_desc *enable; };

static inline struct simple_bridge * @@ -143,19 +145,23 @@ static int simple_bridge_attach(struct drm_bridge *bridge, static void simple_bridge_enable(struct drm_bridge *bridge) { struct simple_bridge *sbridge = drm_bridge_to_simple_bridge(bridge); - int ret = 0; + int ret;

- if (sbridge->vdd) + if (sbridge->vdd) { ret = regulator_enable(sbridge->vdd); + if (ret) + DRM_ERROR("Failed to enable vdd regulator: %d\n", ret); + }

- if (ret) - DRM_ERROR("Failed to enable vdd regulator: %d\n", ret); + gpiod_set_value_cansleep(sbridge->enable, 1); }

static void simple_bridge_disable(struct drm_bridge *bridge) { struct simple_bridge *sbridge = drm_bridge_to_simple_bridge(bridge);

+ gpiod_set_value_cansleep(sbridge->enable, 0); + if (sbridge->vdd) regulator_disable(sbridge->vdd); } @@ -208,6 +214,14 @@ static int simple_bridge_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "No vdd regulator found: %d\n", ret); }

+ sbridge->enable = devm_gpiod_get_optional(&pdev->dev, "enable", + GPIOD_OUT_LOW); + if (IS_ERR(sbridge->enable)) { + if (PTR_ERR(sbridge->enable) != -EPROBE_DEFER) + dev_err(&pdev->dev, "Unable to retrieve enable GPIO\n"); + return PTR_ERR(sbridge->enable); + } + sbridge->ddc = simple_bridge_retrieve_ddc(&pdev->dev); if (IS_ERR(sbridge->ddc)) { if (PTR_ERR(sbridge->ddc) == -ENODEV) {

Display connectors are modelled in DT as a device node, but have so far been handled manually in several bridge drivers. This resulted in duplicate code in several bridge drivers, with slightly different (and thus confusing) logics.

In order to fix this, implement a bridge driver for display connectors. The driver centralises logic for the DVI, HDMI, VGAn composite and S-video connectors and exposes corresponding bridge operations.

This driver in itself doesn't solve the issue completely, changes in bridge and display controller drivers are needed to make use of the new connector driver.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Maxime Ripard mripard@kernel.org Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/bridge/Kconfig | 11 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/display-connector.c | 295 +++++++++++++++++++++ 3 files changed, 307 insertions(+) create mode 100644 drivers/gpu/drm/bridge/display-connector.c

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 10073ad88283..d63283661850 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -27,6 +27,17 @@ config DRM_CDNS_DSI Support Cadence DPI to DSI bridge. This is an internal bridge and is meant to be directly embedded in a SoC.

+config DRM_DISPLAY_CONNECTOR + tristate "Display connector support" + depends on OF + help + Driver for display connectors with support for DDC and hot-plug + detection. Most display controller handle display connectors + internally and don't need this driver, but the DRM subsystem is + moving towards separating connector handling from display controllers + on ARM-based platforms. Saying Y here when this driver is not needed + will not cause any issue. + config DRM_LVDS_CODEC tristate "Transparent LVDS encoders and decoders support" depends on OF diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index b6b2e7029a78..17f1f155e803 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o +obj-$(CONFIG_DRM_DISPLAY_CONNECTOR) += display-connector.o obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v3-fw.o obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o diff --git a/drivers/gpu/drm/bridge/display-connector.c b/drivers/gpu/drm/bridge/display-connector.c new file mode 100644 index 000000000000..4d278573cdb9 --- /dev/null +++ b/drivers/gpu/drm/bridge/display-connector.c @@ -0,0 +1,295 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Laurent Pinchart laurent.pinchart@ideasonboard.com + */ + +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> + +#include <drm/drm_bridge.h> +#include <drm/drm_edid.h> + +struct display_connector { + struct drm_bridge bridge; + + struct gpio_desc *hpd_gpio; + int hpd_irq; +}; + +static inline struct display_connector * +to_display_connector(struct drm_bridge *bridge) +{ + return container_of(bridge, struct display_connector, bridge); +} + +static int display_connector_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL; +} + +static enum drm_connector_status +display_connector_detect(struct drm_bridge *bridge) +{ + struct display_connector *conn = to_display_connector(bridge); + + if (conn->hpd_gpio) { + if (gpiod_get_value_cansleep(conn->hpd_gpio)) + return connector_status_connected; + else + return connector_status_disconnected; + } + + if (conn->bridge.ddc && drm_probe_ddc(conn->bridge.ddc)) + return connector_status_connected; + + switch (conn->bridge.type) { + case DRM_MODE_CONNECTOR_DVIA: + case DRM_MODE_CONNECTOR_DVID: + case DRM_MODE_CONNECTOR_DVII: + case DRM_MODE_CONNECTOR_HDMIA: + case DRM_MODE_CONNECTOR_HDMIB: + /* + * For DVI and HDMI connectors a DDC probe failure indicates + * that no cable is connected. + */ + return connector_status_disconnected; + + case DRM_MODE_CONNECTOR_Composite: + case DRM_MODE_CONNECTOR_SVIDEO: + case DRM_MODE_CONNECTOR_VGA: + default: + /* + * Composite and S-Video connectors have no other detection + * mean than the HPD GPIO. For VGA connectors, even if we have + * an I2C bus, we can't assume that the cable is disconnected + * if drm_probe_ddc fails, as some cables don't wire the DDC + * pins. + */ + return connector_status_unknown; + } +} + +static struct edid *display_connector_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct display_connector *conn = to_display_connector(bridge); + + return drm_get_edid(connector, conn->bridge.ddc); +} + +static const struct drm_bridge_funcs display_connector_bridge_funcs = { + .attach = display_connector_attach, + .detect = display_connector_detect, + .get_edid = display_connector_get_edid, +}; + +static irqreturn_t display_connector_hpd_irq(int irq, void *arg) +{ + struct display_connector *conn = arg; + struct drm_bridge *bridge = &conn->bridge; + + drm_bridge_hpd_notify(bridge, display_connector_detect(bridge)); + + return IRQ_HANDLED; +} + +static int display_connector_probe(struct platform_device *pdev) +{ + struct display_connector *conn; + unsigned int type; + const char *label; + int ret; + + conn = devm_kzalloc(&pdev->dev, sizeof(*conn), GFP_KERNEL); + if (!conn) + return -ENOMEM; + + platform_set_drvdata(pdev, conn); + + type = (uintptr_t)of_device_get_match_data(&pdev->dev); + + /* Get the exact connector type. */ + switch (type) { + case DRM_MODE_CONNECTOR_DVII: { + bool analog, digital; + + analog = of_property_read_bool(pdev->dev.of_node, "analog"); + digital = of_property_read_bool(pdev->dev.of_node, "digital"); + if (analog && !digital) { + conn->bridge.type = DRM_MODE_CONNECTOR_DVIA; + } else if (!analog && digital) { + conn->bridge.type = DRM_MODE_CONNECTOR_DVID; + } else if (analog && digital) { + conn->bridge.type = DRM_MODE_CONNECTOR_DVII; + } else { + dev_err(&pdev->dev, "DVI connector with no type\n"); + return -EINVAL; + } + break; + } + + case DRM_MODE_CONNECTOR_HDMIA: { + const char *hdmi_type; + + ret = of_property_read_string(pdev->dev.of_node, "type", + &hdmi_type); + if (ret < 0) { + dev_err(&pdev->dev, "HDMI connector with no type\n"); + return -EINVAL; + } + + if (!strcmp(hdmi_type, "a") || !strcmp(hdmi_type, "c") || + !strcmp(hdmi_type, "d") || !strcmp(hdmi_type, "e")) { + conn->bridge.type = DRM_MODE_CONNECTOR_HDMIA; + } else if (!strcmp(hdmi_type, "b")) { + conn->bridge.type = DRM_MODE_CONNECTOR_HDMIB; + } else { + dev_err(&pdev->dev, + "Unsupported HDMI connector type '%s'\n", + hdmi_type); + return -EINVAL; + } + + break; + } + + default: + conn->bridge.type = type; + break; + } + + /* All the supported connector types support interlaced modes. */ + conn->bridge.interlace_allowed = true; + + /* Get the optional connector label. */ + of_property_read_string(pdev->dev.of_node, "label", &label); + + /* + * Get the HPD GPIO for DVI and HDMI connectors. If the GPIO can provide + * edge interrupts, register an interrupt handler. + */ + if (type == DRM_MODE_CONNECTOR_DVII || + type == DRM_MODE_CONNECTOR_HDMIA) { + conn->hpd_gpio = devm_gpiod_get_optional(&pdev->dev, "hpd", + GPIOD_IN); + if (IS_ERR(conn->hpd_gpio)) { + if (PTR_ERR(conn->hpd_gpio) != -EPROBE_DEFER) + dev_err(&pdev->dev, + "Unable to retrieve HPD GPIO\n"); + return PTR_ERR(conn->hpd_gpio); + } + + conn->hpd_irq = gpiod_to_irq(conn->hpd_gpio); + } else { + conn->hpd_irq = -EINVAL; + } + + if (conn->hpd_irq >= 0) { + ret = devm_request_threaded_irq(&pdev->dev, conn->hpd_irq, + NULL, display_connector_hpd_irq, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "HPD", conn); + if (ret) { + dev_info(&pdev->dev, + "Failed to request HPD edge interrupt, falling back to polling\n"); + conn->hpd_irq = -EINVAL; + } + } + + /* Retrieve the DDC I2C adapter for DVI, HDMI and VGA connectors. */ + if (type == DRM_MODE_CONNECTOR_DVII || + type == DRM_MODE_CONNECTOR_HDMIA || + type == DRM_MODE_CONNECTOR_VGA) { + struct device_node *phandle; + + phandle = of_parse_phandle(pdev->dev.of_node, "ddc-i2c-bus", 0); + if (phandle) { + conn->bridge.ddc = of_get_i2c_adapter_by_node(phandle); + of_node_put(phandle); + if (!conn->bridge.ddc) + return -EPROBE_DEFER; + } else { + dev_dbg(&pdev->dev, + "No I2C bus specified, disabling EDID readout\n"); + } + } + + conn->bridge.funcs = &display_connector_bridge_funcs; + conn->bridge.of_node = pdev->dev.of_node; + + if (conn->bridge.ddc) + conn->bridge.ops |= DRM_BRIDGE_OP_EDID + | DRM_BRIDGE_OP_DETECT; + if (conn->hpd_gpio) + conn->bridge.ops |= DRM_BRIDGE_OP_DETECT; + if (conn->hpd_irq >= 0) + conn->bridge.ops |= DRM_BRIDGE_OP_HPD; + + dev_dbg(&pdev->dev, + "Found %s display connector '%s' %s DDC bus and %s HPD GPIO (ops 0x%x)\n", + drm_get_connector_type_name(conn->bridge.type), + label ? label : "<unlabelled>", + conn->bridge.ddc ? "with" : "without", + conn->hpd_gpio ? "with" : "without", + conn->bridge.ops); + + drm_bridge_add(&conn->bridge); + + return 0; +} + +static int display_connector_remove(struct platform_device *pdev) +{ + struct display_connector *conn = platform_get_drvdata(pdev); + + drm_bridge_remove(&conn->bridge); + + if (!IS_ERR(conn->bridge.ddc)) + i2c_put_adapter(conn->bridge.ddc); + + return 0; +} + +static const struct of_device_id display_connector_match[] = { + { + .compatible = "composite-video-connector", + .data = (void *)DRM_MODE_CONNECTOR_Composite, + }, { + .compatible = "dvi-connector", + .data = (void *)DRM_MODE_CONNECTOR_DVII, + }, { + .compatible = "hdmi-connector", + .data = (void *)DRM_MODE_CONNECTOR_HDMIA, + }, { + .compatible = "svideo-connector", + .data = (void *)DRM_MODE_CONNECTOR_SVIDEO, + }, { + .compatible = "vga-connector", + .data = (void *)DRM_MODE_CONNECTOR_VGA, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, display_connector_match); + +static struct platform_driver display_connector_driver = { + .probe = display_connector_probe, + .remove = display_connector_remove, + .driver = { + .name = "display-connector", + .of_match_table = display_connector_match, + }, +}; +module_platform_driver(display_connector_driver); + +MODULE_AUTHOR("Laurent Pinchart laurent.pinchart@ideasonboard.com"); +MODULE_DESCRIPTION("Display connector driver"); +MODULE_LICENSE("GPL");

Implement the newly added bridge connector operations, allowing the usage of drm_bridge_panel with drm_bridge_connector.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Reviewed-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/bridge/panel.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 5c92d7c9fd61..8461ee8304ba 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -60,10 +60,8 @@ static int panel_bridge_attach(struct drm_bridge *bridge, struct drm_connector *connector = &panel_bridge->connector; int ret;

- if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { - DRM_ERROR("Fix bridge driver to make connector optional!"); - return -EINVAL; - } + if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) + return 0;

if (!bridge->encoder) { DRM_ERROR("Missing encoder\n"); @@ -126,6 +124,14 @@ static void panel_bridge_post_disable(struct drm_bridge *bridge) drm_panel_unprepare(panel_bridge->panel); }

+static int panel_bridge_get_modes(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge); + + return drm_panel_get_modes(panel_bridge->panel, connector); +} + static const struct drm_bridge_funcs panel_bridge_bridge_funcs = { .attach = panel_bridge_attach, .detach = panel_bridge_detach, @@ -133,6 +139,7 @@ static const struct drm_bridge_funcs panel_bridge_bridge_funcs = { .enable = panel_bridge_enable, .disable = panel_bridge_disable, .post_disable = panel_bridge_post_disable, + .get_modes = panel_bridge_get_modes, .atomic_reset = drm_atomic_helper_bridge_reset, .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, @@ -206,6 +213,8 @@ struct drm_bridge *drm_panel_bridge_add_typed(struct drm_panel *panel, #ifdef CONFIG_OF panel_bridge->bridge.of_node = panel->dev->of_node; #endif + panel_bridge->bridge.ops = DRM_BRIDGE_OP_MODES; + panel_bridge->bridge.type = connector_type;

drm_bridge_add(&panel_bridge->bridge);

The tfp410 driver can operate as part of a pipeline where the drm_connector is created by the display controller. Enable this mode of operation by skipping creation of a drm_connector internally.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Boris Brezillon boris.brezillon@collabora.com Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/bridge/ti-tfp410.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index 2b8741ebc696..40c4d4a5517b 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -124,10 +124,8 @@ static int tfp410_attach(struct drm_bridge *bridge, if (ret < 0) return ret;

- if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { - DRM_ERROR("Fix bridge driver to make connector optional!"); - return -EINVAL; - } + if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) + return 0;

if (!bridge->encoder) { dev_err(dvi->dev, "Missing encoder\n");

When the DSS initialises its output DPI and SDI ports, failures don't clean up previous successfully initialised ports. This can lead to resource leak or memory corruption. Fix it.

Reported-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/dss.c | 43 +++++++++++++++++++------------ 1 file changed, 26 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c index 225ec808b01a..67b92b5d8dd7 100644 --- a/drivers/gpu/drm/omapdrm/dss/dss.c +++ b/drivers/gpu/drm/omapdrm/dss/dss.c @@ -1151,46 +1151,38 @@ static const struct dss_features dra7xx_dss_feats = { .has_lcd_clk_src = true, };

-static int dss_init_ports(struct dss_device *dss) +static void __dss_uninit_ports(struct dss_device *dss, unsigned int num_ports) { struct platform_device *pdev = dss->pdev; struct device_node *parent = pdev->dev.of_node; struct device_node *port; unsigned int i; - int r;

- for (i = 0; i < dss->feat->num_ports; i++) { + for (i = 0; i < num_ports; i++) { port = of_graph_get_port_by_id(parent, i); if (!port) continue;

switch (dss->feat->ports[i]) { case OMAP_DISPLAY_TYPE_DPI: - r = dpi_init_port(dss, pdev, port, dss->feat->model); - if (r) - return r; + dpi_uninit_port(port); break; - case OMAP_DISPLAY_TYPE_SDI: - r = sdi_init_port(dss, pdev, port); - if (r) - return r; + sdi_uninit_port(port); break; - default: break; } } - - return 0; }

-static void dss_uninit_ports(struct dss_device *dss) +static int dss_init_ports(struct dss_device *dss) { struct platform_device *pdev = dss->pdev; struct device_node *parent = pdev->dev.of_node; struct device_node *port; - int i; + unsigned int i; + int r;

for (i = 0; i < dss->feat->num_ports; i++) { port = of_graph_get_port_by_id(parent, i); @@ -1199,15 +1191,32 @@ static void dss_uninit_ports(struct dss_device *dss)

switch (dss->feat->ports[i]) { case OMAP_DISPLAY_TYPE_DPI: - dpi_uninit_port(port); + r = dpi_init_port(dss, pdev, port, dss->feat->model); + if (r) + goto error; break; + case OMAP_DISPLAY_TYPE_SDI: - sdi_uninit_port(port); + r = sdi_init_port(dss, pdev, port); + if (r) + goto error; break; + default: break; } } + + return 0; + +error: + __dss_uninit_ports(dss, i); + return r; +} + +static void dss_uninit_ports(struct dss_device *dss) +{ + __dss_uninit_ports(dss, dss->feat->num_ports); }

static int dss_video_pll_probe(struct dss_device *dss)

Move the code that computes the DRM connector type for the omapdss_device display type to a new omapdss_device_connector_type() function for later reuse.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Acked-by: Sam Ravnborg sam@ravnborg.org Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/base.c | 23 +++++++++++++++++++++++ drivers/gpu/drm/omapdrm/dss/omapdss.h | 1 + drivers/gpu/drm/omapdrm/omap_connector.c | 19 +------------------ 3 files changed, 25 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c index a1970b9db6ab..cae5687822e2 100644 --- a/drivers/gpu/drm/omapdrm/dss/base.c +++ b/drivers/gpu/drm/omapdrm/dss/base.c @@ -285,6 +285,29 @@ void omapdss_device_post_disable(struct omap_dss_device *dssdev) } EXPORT_SYMBOL_GPL(omapdss_device_post_disable);

+unsigned int omapdss_device_connector_type(enum omap_display_type type) +{ + switch (type) { + case OMAP_DISPLAY_TYPE_HDMI: + return DRM_MODE_CONNECTOR_HDMIA; + case OMAP_DISPLAY_TYPE_DVI: + return DRM_MODE_CONNECTOR_DVID; + case OMAP_DISPLAY_TYPE_DSI: + return DRM_MODE_CONNECTOR_DSI; + case OMAP_DISPLAY_TYPE_DPI: + case OMAP_DISPLAY_TYPE_DBI: + return DRM_MODE_CONNECTOR_DPI; + case OMAP_DISPLAY_TYPE_VENC: + /* TODO: This could also be composite */ + return DRM_MODE_CONNECTOR_SVIDEO; + case OMAP_DISPLAY_TYPE_SDI: + return DRM_MODE_CONNECTOR_LVDS; + default: + return DRM_MODE_CONNECTOR_Unknown; + } +} +EXPORT_SYMBOL_GPL(omapdss_device_connector_type); + /* ----------------------------------------------------------------------------- * Components Handling */ diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index 79f6b195c7cf..c5672e5174c5 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -479,6 +479,7 @@ void omapdss_device_pre_enable(struct omap_dss_device *dssdev); void omapdss_device_enable(struct omap_dss_device *dssdev); void omapdss_device_disable(struct omap_dss_device *dssdev); void omapdss_device_post_disable(struct omap_dss_device *dssdev); +unsigned int omapdss_device_connector_type(enum omap_display_type type);

int omap_dss_get_num_overlay_managers(void);

diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c index 88dbf3fa473f..38c7a79c5d4a 100644 --- a/drivers/gpu/drm/omapdrm/omap_connector.c +++ b/drivers/gpu/drm/omapdrm/omap_connector.c @@ -296,24 +296,7 @@ static int omap_connector_get_type(struct omap_dss_device *output) type = display->type; omapdss_device_put(display);

- switch (type) { - case OMAP_DISPLAY_TYPE_HDMI: - return DRM_MODE_CONNECTOR_HDMIA; - case OMAP_DISPLAY_TYPE_DVI: - return DRM_MODE_CONNECTOR_DVID; - case OMAP_DISPLAY_TYPE_DSI: - return DRM_MODE_CONNECTOR_DSI; - case OMAP_DISPLAY_TYPE_DPI: - case OMAP_DISPLAY_TYPE_DBI: - return DRM_MODE_CONNECTOR_DPI; - case OMAP_DISPLAY_TYPE_VENC: - /* TODO: This could also be composite */ - return DRM_MODE_CONNECTOR_SVIDEO; - case OMAP_DISPLAY_TYPE_SDI: - return DRM_MODE_CONNECTOR_LVDS; - default: - return DRM_MODE_CONNECTOR_Unknown; - } + return omapdss_device_connector_type(type); }

/* initialize connector */

The DSS core looks up the next device connected to an output by traversing the OF graph. It currently hardcodes the local port number to 0, which breaks any output with a different port number (SDI on OMAP3 and any DPI output but the first one). Fix this by repurposing the currently unused of_ports bitmask in omap_dss_device with an of_port output port number, and use it to traverse the OF graph.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c | 2 +- drivers/gpu/drm/omapdrm/displays/connector-hdmi.c | 2 +- drivers/gpu/drm/omapdrm/displays/encoder-opa362.c | 2 +- drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c | 2 +- drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 2 +- drivers/gpu/drm/omapdrm/dss/dpi.c | 2 +- drivers/gpu/drm/omapdrm/dss/dsi.c | 2 +- drivers/gpu/drm/omapdrm/dss/hdmi4.c | 2 +- drivers/gpu/drm/omapdrm/dss/hdmi5.c | 2 +- drivers/gpu/drm/omapdrm/dss/omapdss.h | 4 ++-- drivers/gpu/drm/omapdrm/dss/output.c | 3 +-- drivers/gpu/drm/omapdrm/dss/sdi.c | 2 +- drivers/gpu/drm/omapdrm/dss/venc.c | 2 +- 13 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c index 0d20fab605d7..f36aa1885d39 100644 --- a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c +++ b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c @@ -55,7 +55,7 @@ static int tvc_probe(struct platform_device *pdev) dssdev->type = OMAP_DISPLAY_TYPE_VENC; dssdev->display = true; dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(0); + dssdev->of_port = 0;

omapdss_display_init(dssdev); omapdss_device_register(dssdev); diff --git a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c index f5d69d810bb8..37c212491cd3 100644 --- a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c +++ b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c @@ -139,7 +139,7 @@ static int hdmic_probe(struct platform_device *pdev) dssdev->type = OMAP_DISPLAY_TYPE_HDMI; dssdev->display = true; dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(0); + dssdev->of_port = 0; dssdev->ops_flags = ddata->hpd_gpio ? OMAP_DSS_DEVICE_OP_DETECT | OMAP_DSS_DEVICE_OP_HPD : 0; diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c b/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c index b992387ed674..252705222ef1 100644 --- a/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c +++ b/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c @@ -86,7 +86,7 @@ static int opa362_probe(struct platform_device *pdev) dssdev->dev = &pdev->dev; dssdev->type = OMAP_DISPLAY_TYPE_VENC; dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(1) | BIT(0); + dssdev->of_port = 1;

dssdev->next = omapdss_of_find_connected_device(pdev->dev.of_node, 1); if (IS_ERR(dssdev->next)) { diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c index 089105c5aa0a..857ae84cd7d1 100644 --- a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c +++ b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c @@ -165,7 +165,7 @@ static int tpd_probe(struct platform_device *pdev) dssdev->dev = &pdev->dev; dssdev->type = OMAP_DISPLAY_TYPE_HDMI; dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(1) | BIT(0); + dssdev->of_port = 1; dssdev->ops_flags = OMAP_DSS_DEVICE_OP_DETECT | OMAP_DSS_DEVICE_OP_HPD;

diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c index 3ec6a55e932a..3484b5d4a91c 100644 --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c @@ -1265,7 +1265,7 @@ static int dsicm_probe(struct platform_device *pdev) dssdev->type = OMAP_DISPLAY_TYPE_DSI; dssdev->display = true; dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(0); + dssdev->of_port = 0; dssdev->ops_flags = OMAP_DSS_DEVICE_OP_MODES;

dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE | diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c index 95147437b990..462ed6f3118a 100644 --- a/drivers/gpu/drm/omapdrm/dss/dpi.c +++ b/drivers/gpu/drm/omapdrm/dss/dpi.c @@ -625,7 +625,7 @@ static int dpi_init_output_port(struct dpi_data *dpi, struct device_node *port) out->id = OMAP_DSS_OUTPUT_DPI; out->type = OMAP_DISPLAY_TYPE_DPI; out->dispc_channel = dpi_get_channel(dpi); - out->of_ports = BIT(port_num); + out->of_port = port_num; out->ops = &dpi_ops; out->owner = THIS_MODULE;

diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index da16ea095f13..6379eea124d1 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -5116,7 +5116,7 @@ static int dsi_init_output(struct dsi_data *dsi) out->dispc_channel = dsi_get_channel(dsi); out->ops = &dsi_ops; out->owner = THIS_MODULE; - out->of_ports = BIT(0); + out->of_port = 0; out->bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE | DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE; diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index 0f557fad4513..44075718407b 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -673,7 +673,7 @@ static int hdmi4_init_output(struct omap_hdmi *hdmi) out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; out->ops = &hdmi_ops; out->owner = THIS_MODULE; - out->of_ports = BIT(0); + out->of_port = 0; out->ops_flags = OMAP_DSS_DEVICE_OP_EDID;

r = omapdss_device_init_output(out); diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c index d9463b332554..1b5bd44ee09d 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c @@ -657,7 +657,7 @@ static int hdmi5_init_output(struct omap_hdmi *hdmi) out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; out->ops = &hdmi_ops; out->owner = THIS_MODULE; - out->of_ports = BIT(0); + out->of_port = 0; out->ops_flags = OMAP_DSS_DEVICE_OP_EDID;

r = omapdss_device_init_output(out); diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index c5672e5174c5..b48a51d11310 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -436,8 +436,8 @@ struct omap_dss_device { /* output instance */ enum omap_dss_output_id id;

- /* bitmask of port numbers in DT */ - unsigned int of_ports; + /* port number in DT */ + unsigned int of_port; };

struct omap_dss_driver { diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c index 99a253a424c1..c1ec9d343e53 100644 --- a/drivers/gpu/drm/omapdrm/dss/output.c +++ b/drivers/gpu/drm/omapdrm/dss/output.c @@ -4,7 +4,6 @@ * Author: Archit Taneja archit@ti.com */

-#include <linux/bitops.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> @@ -24,7 +23,7 @@ int omapdss_device_init_output(struct omap_dss_device *out) int ret;

remote_node = of_graph_get_remote_node(out->dev->of_node, - ffs(out->of_ports) - 1, 0); + out->of_port, 0); if (!remote_node) { dev_dbg(out->dev, "failed to find video sink\n"); return 0; diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c index 3b447c01fa2a..9092ed3d0ef1 100644 --- a/drivers/gpu/drm/omapdrm/dss/sdi.c +++ b/drivers/gpu/drm/omapdrm/dss/sdi.c @@ -265,7 +265,7 @@ static int sdi_init_output(struct sdi_device *sdi) out->name = "sdi.0"; out->dispc_channel = OMAP_DSS_CHANNEL_LCD; /* We have SDI only on OMAP3, where it's on port 1 */ - out->of_ports = BIT(1); + out->of_port = 1; out->ops = &sdi_ops; out->owner = THIS_MODULE; out->bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE /* 15.5.9.1.2 */ diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c index 596a297d5813..e2f480f689b8 100644 --- a/drivers/gpu/drm/omapdrm/dss/venc.c +++ b/drivers/gpu/drm/omapdrm/dss/venc.c @@ -754,7 +754,7 @@ static int venc_init_output(struct venc_device *venc) out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; out->ops = &venc_ops; out->owner = THIS_MODULE; - out->of_ports = BIT(0); + out->of_port = 0; out->ops_flags = OMAP_DSS_DEVICE_OP_MODES;

r = omapdss_device_init_output(out);

As part of the move to drm_bridge ops, the dssdev ops will become empty for some of the internal encoders. Make them optional in the driver to allow them to be removed completely, easing the transition.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/base.c | 21 ++++++++++++--------- drivers/gpu/drm/omapdrm/dss/dss.c | 3 ++- drivers/gpu/drm/omapdrm/omap_connector.c | 2 +- drivers/gpu/drm/omapdrm/omap_encoder.c | 12 +++++++----- 4 files changed, 22 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c index 80d48936d177..2db3bd2f19db 100644 --- a/drivers/gpu/drm/omapdrm/dss/base.c +++ b/drivers/gpu/drm/omapdrm/dss/base.c @@ -195,10 +195,12 @@ int omapdss_device_connect(struct dss_device *dss,

dst->dss = dss;

- ret = dst->ops->connect(src, dst); - if (ret < 0) { - dst->dss = NULL; - return ret; + if (dst->ops && dst->ops->connect) { + ret = dst->ops->connect(src, dst); + if (ret < 0) { + dst->dss = NULL; + return ret; + } }

return 0; @@ -226,7 +228,8 @@ void omapdss_device_disconnect(struct omap_dss_device *src,

WARN_ON(dst->state != OMAP_DSS_DISPLAY_DISABLED);

- dst->ops->disconnect(src, dst); + if (dst->ops && dst->ops->disconnect) + dst->ops->disconnect(src, dst); dst->dss = NULL; } EXPORT_SYMBOL_GPL(omapdss_device_disconnect); @@ -238,7 +241,7 @@ void omapdss_device_pre_enable(struct omap_dss_device *dssdev)

omapdss_device_pre_enable(dssdev->next);

- if (dssdev->ops->pre_enable) + if (dssdev->ops && dssdev->ops->pre_enable) dssdev->ops->pre_enable(dssdev); } EXPORT_SYMBOL_GPL(omapdss_device_pre_enable); @@ -248,7 +251,7 @@ void omapdss_device_enable(struct omap_dss_device *dssdev) if (!dssdev) return;

- if (dssdev->ops->enable) + if (dssdev->ops && dssdev->ops->enable) dssdev->ops->enable(dssdev);

omapdss_device_enable(dssdev->next); @@ -264,7 +267,7 @@ void omapdss_device_disable(struct omap_dss_device *dssdev)

omapdss_device_disable(dssdev->next);

- if (dssdev->ops->disable) + if (dssdev->ops && dssdev->ops->disable) dssdev->ops->disable(dssdev); } EXPORT_SYMBOL_GPL(omapdss_device_disable); @@ -274,7 +277,7 @@ void omapdss_device_post_disable(struct omap_dss_device *dssdev) if (!dssdev) return;

- if (dssdev->ops->post_disable) + if (dssdev->ops && dssdev->ops->post_disable) dssdev->ops->post_disable(dssdev);

omapdss_device_post_disable(dssdev->next); diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c index 67b92b5d8dd7..b76fc2b56227 100644 --- a/drivers/gpu/drm/omapdrm/dss/dss.c +++ b/drivers/gpu/drm/omapdrm/dss/dss.c @@ -1552,7 +1552,8 @@ static void dss_shutdown(struct platform_device *pdev) DSSDBG("shutdown\n");

for_each_dss_output(dssdev) { - if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) + if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE && + dssdev->ops && dssdev->ops->disable) dssdev->ops->disable(dssdev); } } diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c index b0cb2ecb30ab..a24cec4b0bb9 100644 --- a/drivers/gpu/drm/omapdrm/omap_connector.c +++ b/drivers/gpu/drm/omapdrm/omap_connector.c @@ -228,7 +228,7 @@ enum drm_mode_status omap_connector_mode_fixup(struct omap_dss_device *dssdev, drm_mode_copy(adjusted_mode, mode);

for (; dssdev; dssdev = dssdev->next) { - if (!dssdev->ops->check_timings) + if (!dssdev->ops || !dssdev->ops->check_timings) continue;

ret = dssdev->ops->check_timings(dssdev, adjusted_mode); diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c index a270173a2411..b232acd3bc3d 100644 --- a/drivers/gpu/drm/omapdrm/omap_encoder.c +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c @@ -77,10 +77,10 @@ static void omap_encoder_hdmi_mode_set(struct drm_connector *connector, struct omap_dss_device *dssdev = omap_encoder->output; bool hdmi_mode = connector->display_info.is_hdmi;

- if (dssdev->ops->hdmi.set_hdmi_mode) + if (dssdev->ops && dssdev->ops->hdmi.set_hdmi_mode) dssdev->ops->hdmi.set_hdmi_mode(dssdev, hdmi_mode);

- if (hdmi_mode && dssdev->ops->hdmi.set_infoframe) { + if (hdmi_mode && dssdev->ops && dssdev->ops->hdmi.set_infoframe) { struct hdmi_avi_infoframe avi; int r;

@@ -139,7 +139,7 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder, dss_mgr_set_timings(output, &vm);

for (dssdev = output; dssdev; dssdev = dssdev->next) { - if (dssdev->ops->set_timings) + if (dssdev->ops && dssdev->ops->set_timings) dssdev->ops->set_timings(dssdev, adjusted_mode); }

@@ -168,7 +168,8 @@ static void omap_encoder_disable(struct drm_encoder *encoder) * flow where the pipeline output controls the encoder. */ if (dssdev->type != OMAP_DISPLAY_TYPE_DSI) { - dssdev->ops->disable(dssdev); + if (dssdev->ops && dssdev->ops->disable) + dssdev->ops->disable(dssdev); dssdev->state = OMAP_DSS_DISPLAY_DISABLED; }

@@ -196,7 +197,8 @@ static void omap_encoder_enable(struct drm_encoder *encoder) * flow where the pipeline output controls the encoder. */ if (dssdev->type != OMAP_DISPLAY_TYPE_DSI) { - dssdev->ops->enable(dssdev); + if (dssdev->ops && dssdev->ops->enable) + dssdev->ops->enable(dssdev); dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; }

In preparation of adding DRM bridge support to the hdmi4 encoder code, rework the EDID read to isolate data read.

The hdmi_read_edid() function is the main entry point. It performs all initialisation steps required prior to reading the EDID (such as ensuring the device is powered on), as well as corresponding cleanup steps afterwards. EDID read itself is handled by hdmi_read_edid_data() that calls the hdmi4_core_ddc_read() function to read individual blocks.

This new code architecture will allow reusing hdmi_read_edid() and hdmi4_core_ddc_read() for the drm_bridge EDID read implementation, while swapping out hdmi_read_edid_data() for the DRM drm_do_get_edid() function.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/hdmi4.c | 94 +++++++++++++++--------- drivers/gpu/drm/omapdrm/dss/hdmi4_core.c | 59 +++------------ drivers/gpu/drm/omapdrm/dss/hdmi4_core.h | 4 +- 3 files changed, 73 insertions(+), 84 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index e15fa3862922..37536b9f3114 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -272,23 +272,6 @@ static int hdmi_dump_regs(struct seq_file *s, void *p) return 0; }

-static int read_edid(struct omap_hdmi *hdmi, u8 *buf, int len) -{ - int r; - - mutex_lock(&hdmi->lock); - - r = hdmi_runtime_get(hdmi); - BUG_ON(r); - - r = hdmi4_read_edid(&hdmi->core, buf, len); - - hdmi_runtime_put(hdmi); - mutex_unlock(&hdmi->lock); - - return r; -} - static void hdmi_start_audio_stream(struct omap_hdmi *hd) { hdmi_wp_audio_enable(&hd->wp, true); @@ -407,10 +390,8 @@ static void hdmi_disconnect(struct omap_dss_device *src,

#define MAX_EDID 512

-static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev) +static struct edid *hdmi_read_edid_data(struct omap_hdmi *hdmi) { - struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); - bool need_enable; u8 *edid; int r;

@@ -418,32 +399,79 @@ static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev) if (!edid) return NULL;

+ r = hdmi4_core_ddc_read(&hdmi->core, edid, 0, EDID_LENGTH); + if (r) + goto error; + + if (edid[0x7e] > 0) { + char checksum = 0; + unsigned int i; + + r = hdmi4_core_ddc_read(&hdmi->core, edid + EDID_LENGTH, 1, + EDID_LENGTH); + if (r) + goto error; + + for (i = 0; i < EDID_LENGTH; ++i) + checksum += edid[EDID_LENGTH + i]; + + if (checksum != 0) { + DSSERR("E-EDID checksum failed!!\n"); + goto error; + } + } + + return (struct edid *)edid; + +error: + kfree(edid); + return NULL; +} + +static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev) +{ + struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); + struct edid *edid = NULL; + unsigned int cec_addr; + bool need_enable; + int r; + need_enable = hdmi->core_enabled == false;

if (need_enable) { r = hdmi4_core_enable(&hdmi->core); - if (r) { - kfree(edid); + if (r) return NULL; - } }

- r = read_edid(hdmi, edid, MAX_EDID); - if (r < 0) { - kfree(edid); - edid = NULL; - } else { - unsigned int cec_addr; + mutex_lock(&hdmi->lock); + r = hdmi_runtime_get(hdmi); + BUG_ON(r); + + r = hdmi4_core_ddc_init(&hdmi->core); + if (r) + goto done;

- cec_addr = r >= 256 ? cec_get_edid_phys_addr(edid, r, NULL) - : CEC_PHYS_ADDR_INVALID; - hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr); + edid = hdmi_read_edid_data(hdmi); + +done: + hdmi_runtime_put(hdmi); + mutex_unlock(&hdmi->lock); + + if (edid && edid->extensions) { + unsigned int len = (edid->extensions + 1) * EDID_LENGTH; + + cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL); + } else { + cec_addr = CEC_PHYS_ADDR_INVALID; }

+ hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr); + if (need_enable) hdmi4_core_disable(&hdmi->core);

- return (struct edid *)edid; + return edid; }

static void hdmi_lost_hotplug(struct omap_dss_device *dssdev) diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4_core.c b/drivers/gpu/drm/omapdrm/dss/hdmi4_core.c index ea5d5c228534..751985a2679a 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4_core.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4_core.c @@ -32,7 +32,7 @@ static inline void __iomem *hdmi_av_base(struct hdmi_core_data *core) return core->base + HDMI_CORE_AV; }

-static int hdmi_core_ddc_init(struct hdmi_core_data *core) +int hdmi4_core_ddc_init(struct hdmi_core_data *core) { void __iomem *base = core->base;

@@ -74,13 +74,11 @@ static int hdmi_core_ddc_init(struct hdmi_core_data *core) return 0; }

-static int hdmi_core_ddc_edid(struct hdmi_core_data *core, - u8 *pedid, int ext) +int hdmi4_core_ddc_read(void *data, u8 *buf, unsigned int block, size_t len) { + struct hdmi_core_data *core = data; void __iomem *base = core->base; u32 i; - char checksum; - u32 offset = 0;

/* HDMI_CORE_DDC_STATUS_IN_PROG */ if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS, @@ -89,24 +87,21 @@ static int hdmi_core_ddc_edid(struct hdmi_core_data *core, return -ETIMEDOUT; }

- if (ext % 2 != 0) - offset = 0x80; - /* Load Segment Address Register */ - REG_FLD_MOD(base, HDMI_CORE_DDC_SEGM, ext / 2, 7, 0); + REG_FLD_MOD(base, HDMI_CORE_DDC_SEGM, block / 2, 7, 0);

/* Load Slave Address Register */ REG_FLD_MOD(base, HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1);

/* Load Offset Address Register */ - REG_FLD_MOD(base, HDMI_CORE_DDC_OFFSET, offset, 7, 0); + REG_FLD_MOD(base, HDMI_CORE_DDC_OFFSET, block % 2 ? 0x80 : 0, 7, 0);

/* Load Byte Count */ - REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT1, 0x80, 7, 0); + REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT1, len, 7, 0); REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT2, 0x0, 1, 0);

/* Set DDC_CMD */ - if (ext) + if (block) REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x4, 3, 0); else REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x2, 3, 0); @@ -122,7 +117,7 @@ static int hdmi_core_ddc_edid(struct hdmi_core_data *core, return -EIO; }

- for (i = 0; i < 0x80; ++i) { + for (i = 0; i < len; ++i) { int t;

/* IN_PROG */ @@ -141,48 +136,12 @@ static int hdmi_core_ddc_edid(struct hdmi_core_data *core, udelay(1); }

- pedid[i] = REG_GET(base, HDMI_CORE_DDC_DATA, 7, 0); - } - - checksum = 0; - for (i = 0; i < 0x80; ++i) - checksum += pedid[i]; - - if (checksum != 0) { - DSSERR("E-EDID checksum failed!!\n"); - return -EIO; + buf[i] = REG_GET(base, HDMI_CORE_DDC_DATA, 7, 0); }

return 0; }

-int hdmi4_read_edid(struct hdmi_core_data *core, u8 *edid, int len) -{ - int r, l; - - if (len < 128) - return -EINVAL; - - r = hdmi_core_ddc_init(core); - if (r) - return r; - - r = hdmi_core_ddc_edid(core, edid, 0); - if (r) - return r; - - l = 128; - - if (len >= 128 * 2 && edid[0x7e] > 0) { - r = hdmi_core_ddc_edid(core, edid + 0x80, 1); - if (r) - return r; - l += 128; - } - - return l; -} - static void hdmi_core_init(struct hdmi_core_video_config *video_cfg) { DSSDBG("Enter hdmi_core_init\n"); diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4_core.h b/drivers/gpu/drm/omapdrm/dss/hdmi4_core.h index 11c4b7ba1eee..dc64ae2aa300 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4_core.h +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4_core.h @@ -249,7 +249,9 @@ struct hdmi_core_packet_enable_repeat { u32 generic_pkt_repeat; };

-int hdmi4_read_edid(struct hdmi_core_data *core, u8 *edid, int len); +int hdmi4_core_ddc_init(struct hdmi_core_data *core); +int hdmi4_core_ddc_read(void *data, u8 *buf, unsigned int block, size_t len); + void hdmi4_configure(struct hdmi_core_data *core, struct hdmi_wp_data *wp, struct hdmi_config *cfg); void hdmi4_core_dump(struct hdmi_core_data *core, struct seq_file *s);

In order to integrate with a chain of drm_bridge, the internal HDMI4 encoder has to expose the EDID read operation through the drm_bridge API. Register a bridge at initialisation time to do so.

For the time being make the next bridge in the chain optional as the HDMI output is still based on omap_dss_device. The create_connector argument to the bridge attach function is also ignored for the same reason. This will be changed later when removing the related omapdrm-specific display drivers.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/hdmi.h | 3 ++ drivers/gpu/drm/omapdrm/dss/hdmi4.c | 78 ++++++++++++++++++++++++++--- 2 files changed, 75 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi.h b/drivers/gpu/drm/omapdrm/dss/hdmi.h index c867552c925c..bd43f6abf27b 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi.h +++ b/drivers/gpu/drm/omapdrm/dss/hdmi.h @@ -14,6 +14,7 @@ #include <linux/hdmi.h> #include <sound/omap-hdmi-audio.h> #include <media/cec.h> +#include <drm/drm_bridge.h>

#include "omapdss.h" #include "dss.h" @@ -364,6 +365,7 @@ struct omap_hdmi { bool core_enabled;

struct omap_dss_device output; + struct drm_bridge bridge;

struct platform_device *audio_pdev; void (*audio_abort_cb)(struct device *dev); @@ -379,5 +381,6 @@ struct omap_hdmi { };

#define dssdev_to_hdmi(dssdev) container_of(dssdev, struct omap_hdmi, output) +#define drm_bridge_to_hdmi(b) container_of(b, struct omap_hdmi, bridge)

#endif diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index 37536b9f3114..67994287447b 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -390,7 +390,8 @@ static void hdmi_disconnect(struct omap_dss_device *src,

#define MAX_EDID 512

-static struct edid *hdmi_read_edid_data(struct omap_hdmi *hdmi) +static struct edid *hdmi_read_edid_data(struct omap_hdmi *hdmi, + struct drm_connector *connector) { u8 *edid; int r; @@ -428,9 +429,12 @@ static struct edid *hdmi_read_edid_data(struct omap_hdmi *hdmi) return NULL; }

-static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev) +static struct edid * +hdmi_do_read_edid(struct omap_hdmi *hdmi, + struct edid *(*read)(struct omap_hdmi *hdmi, + struct drm_connector *connector), + struct drm_connector *connector) { - struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); struct edid *edid = NULL; unsigned int cec_addr; bool need_enable; @@ -452,7 +456,7 @@ static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev) if (r) goto done;

- edid = hdmi_read_edid_data(hdmi); + edid = read(hdmi, connector);

done: hdmi_runtime_put(hdmi); @@ -474,6 +478,12 @@ static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev) return edid; }

+static struct edid *hdmi_read_edid(struct omap_dss_device *dssdev) +{ + return hdmi_do_read_edid(dssdev_to_hdmi(dssdev), hdmi_read_edid_data, + NULL); +} + static void hdmi_lost_hotplug(struct omap_dss_device *dssdev) { struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); @@ -517,6 +527,56 @@ static const struct omap_dss_device_ops hdmi_ops = { }, };

+/* ----------------------------------------------------------------------------- + * DRM Bridge Operations + */ + +static int hdmi4_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); + + if (!hdmi->output.next_bridge) + return 0; + + return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge, + bridge, flags); +} + +static struct edid *hdmi4_bridge_read_edid(struct omap_hdmi *hdmi, + struct drm_connector *connector) +{ + return drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core); +} + +static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); + + return hdmi_do_read_edid(hdmi, hdmi4_bridge_read_edid, connector); +} + +static const struct drm_bridge_funcs hdmi4_bridge_funcs = { + .attach = hdmi4_bridge_attach, + .get_edid = hdmi4_bridge_get_edid, +}; + +static void hdmi4_bridge_init(struct omap_hdmi *hdmi) +{ + hdmi->bridge.funcs = &hdmi4_bridge_funcs; + hdmi->bridge.of_node = hdmi->pdev->dev.of_node; + hdmi->bridge.ops = DRM_BRIDGE_OP_EDID; + hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; + + drm_bridge_add(&hdmi->bridge); +} + +static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi) +{ + drm_bridge_remove(&hdmi->bridge); +} + /* ----------------------------------------------------------------------------- * Audio Callbacks */ @@ -708,6 +768,8 @@ static int hdmi4_init_output(struct omap_hdmi *hdmi) struct omap_dss_device *out = &hdmi->output; int r;

+ hdmi4_bridge_init(hdmi); + out->dev = &hdmi->pdev->dev; out->id = OMAP_DSS_OUTPUT_HDMI; out->type = OMAP_DISPLAY_TYPE_HDMI; @@ -718,9 +780,11 @@ static int hdmi4_init_output(struct omap_hdmi *hdmi) out->of_port = 0; out->ops_flags = OMAP_DSS_DEVICE_OP_EDID;

- r = omapdss_device_init_output(out, NULL); - if (r < 0) + r = omapdss_device_init_output(out, &hdmi->bridge); + if (r < 0) { + hdmi4_bridge_cleanup(hdmi); return r; + }

omapdss_device_register(out);

@@ -733,6 +797,8 @@ static void hdmi4_uninit_output(struct omap_hdmi *hdmi)

omapdss_device_unregister(out); omapdss_device_cleanup_output(out); + + hdmi4_bridge_cleanup(hdmi); }

static int hdmi4_probe_of(struct omap_hdmi *hdmi)

Move the omap_dss_device .set_timings(), .enable() and .disable() operations to the drm_bridge functions. As the drm_bridge for the HDMI encoder is unconditionally registered and attached, those operations will be called at the appropriate time.

The omapdss device .set_infoframe() and .set_hdmi_mode() operations have no equivalent in drm_bridge. Thir content is thus moved to the bridge .enable() operation as the data they store is not needed before the HDMI encoder gets enabled.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/hdmi4.c | 206 +++++++++++++++------------- 1 file changed, 111 insertions(+), 95 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index 67994287447b..a8d13a081a9a 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -28,6 +28,9 @@ #include <sound/omap-hdmi-audio.h> #include <media/cec.h>

+#include <drm/drm_atomic.h> +#include <drm/drm_atomic_state_helper.h> + #include "omapdss.h" #include "hdmi4_core.h" #include "hdmi4_cec.h" @@ -237,20 +240,6 @@ static void hdmi_power_off_full(struct omap_hdmi *hdmi) hdmi_power_off_core(hdmi); }

-static void hdmi_display_set_timings(struct omap_dss_device *dssdev, - const struct drm_display_mode *mode) -{ - struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); - - mutex_lock(&hdmi->lock); - - drm_display_mode_to_videomode(mode, &hdmi->cfg.vm); - - dispc_set_tv_pclk(hdmi->dss->dispc, mode->clock * 1000); - - mutex_unlock(&hdmi->lock); -} - static int hdmi_dump_regs(struct seq_file *s, void *p) { struct omap_hdmi *hdmi = s->private; @@ -284,62 +273,6 @@ static void hdmi_stop_audio_stream(struct omap_hdmi *hd) hdmi_wp_audio_enable(&hd->wp, false); }

-static void hdmi_display_enable(struct omap_dss_device *dssdev) -{ - struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); - unsigned long flags; - int r; - - DSSDBG("ENTER hdmi_display_enable\n"); - - mutex_lock(&hdmi->lock); - - r = hdmi_power_on_full(hdmi); - if (r) { - DSSERR("failed to power on device\n"); - goto done; - } - - if (hdmi->audio_configured) { - r = hdmi4_audio_config(&hdmi->core, &hdmi->wp, - &hdmi->audio_config, - hdmi->cfg.vm.pixelclock); - if (r) { - DSSERR("Error restoring audio configuration: %d", r); - hdmi->audio_abort_cb(&hdmi->pdev->dev); - hdmi->audio_configured = false; - } - } - - spin_lock_irqsave(&hdmi->audio_playing_lock, flags); - if (hdmi->audio_configured && hdmi->audio_playing) - hdmi_start_audio_stream(hdmi); - hdmi->display_enabled = true; - spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); - -done: - mutex_unlock(&hdmi->lock); -} - -static void hdmi_display_disable(struct omap_dss_device *dssdev) -{ - struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); - unsigned long flags; - - DSSDBG("Enter hdmi_display_disable\n"); - - mutex_lock(&hdmi->lock); - - spin_lock_irqsave(&hdmi->audio_playing_lock, flags); - hdmi_stop_audio_stream(hdmi); - hdmi->display_enabled = false; - spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); - - hdmi_power_off_full(hdmi); - - mutex_unlock(&hdmi->lock); -} - int hdmi4_core_enable(struct hdmi_core_data *core) { struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core); @@ -491,39 +424,14 @@ static void hdmi_lost_hotplug(struct omap_dss_device *dssdev) hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID); }

-static int hdmi_set_infoframe(struct omap_dss_device *dssdev, - const struct hdmi_avi_infoframe *avi) -{ - struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); - - hdmi->cfg.infoframe = *avi; - return 0; -} - -static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev, - bool hdmi_mode) -{ - struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); - - hdmi->cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI; - return 0; -} - static const struct omap_dss_device_ops hdmi_ops = { .connect = hdmi_connect, .disconnect = hdmi_disconnect,

- .enable = hdmi_display_enable, - .disable = hdmi_display_disable, - - .set_timings = hdmi_display_set_timings, - .read_edid = hdmi_read_edid,

.hdmi = { .lost_hotplug = hdmi_lost_hotplug, - .set_infoframe = hdmi_set_infoframe, - .set_hdmi_mode = hdmi_set_hdmi_mode, }, };

@@ -543,6 +451,108 @@ static int hdmi4_bridge_attach(struct drm_bridge *bridge, bridge, flags); }

+static void hdmi4_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) +{ + struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); + + mutex_lock(&hdmi->lock); + + drm_display_mode_to_videomode(adjusted_mode, &hdmi->cfg.vm); + + dispc_set_tv_pclk(hdmi->dss->dispc, adjusted_mode->clock * 1000); + + mutex_unlock(&hdmi->lock); +} + +static void hdmi4_bridge_enable(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state) +{ + struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); + struct drm_atomic_state *state = bridge_state->base.state; + struct drm_connector_state *conn_state; + struct drm_connector *connector; + struct drm_crtc_state *crtc_state; + unsigned long flags; + int ret; + + /* + * None of these should fail, as the bridge can't be enabled without a + * valid CRTC to connector path with fully populated new states. + */ + connector = drm_atomic_get_new_connector_for_encoder(state, + bridge->encoder); + if (WARN_ON(!connector)) + return; + conn_state = drm_atomic_get_new_connector_state(state, connector); + if (WARN_ON(!conn_state)) + return; + crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc); + if (WARN_ON(!crtc_state)) + return; + + hdmi->cfg.hdmi_dvi_mode = connector->display_info.is_hdmi + ? HDMI_HDMI : HDMI_DVI; + + if (connector->display_info.is_hdmi) { + const struct drm_display_mode *mode; + struct hdmi_avi_infoframe avi; + + mode = &crtc_state->adjusted_mode; + ret = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector, + mode); + if (ret == 0) + hdmi->cfg.infoframe = avi; + } + + mutex_lock(&hdmi->lock); + + ret = hdmi_power_on_full(hdmi); + if (ret) { + DSSERR("failed to power on device\n"); + goto done; + } + + if (hdmi->audio_configured) { + ret = hdmi4_audio_config(&hdmi->core, &hdmi->wp, + &hdmi->audio_config, + hdmi->cfg.vm.pixelclock); + if (ret) { + DSSERR("Error restoring audio configuration: %d", ret); + hdmi->audio_abort_cb(&hdmi->pdev->dev); + hdmi->audio_configured = false; + } + } + + spin_lock_irqsave(&hdmi->audio_playing_lock, flags); + if (hdmi->audio_configured && hdmi->audio_playing) + hdmi_start_audio_stream(hdmi); + hdmi->display_enabled = true; + spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); + +done: + mutex_unlock(&hdmi->lock); +} + +static void hdmi4_bridge_disable(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state) +{ + struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); + unsigned long flags; + + mutex_lock(&hdmi->lock); + + spin_lock_irqsave(&hdmi->audio_playing_lock, flags); + hdmi_stop_audio_stream(hdmi); + hdmi->display_enabled = false; + spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); + + hdmi_power_off_full(hdmi); + + mutex_unlock(&hdmi->lock); +} + static struct edid *hdmi4_bridge_read_edid(struct omap_hdmi *hdmi, struct drm_connector *connector) { @@ -559,6 +569,12 @@ static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge,

static const struct drm_bridge_funcs hdmi4_bridge_funcs = { .attach = hdmi4_bridge_attach, + .mode_set = hdmi4_bridge_mode_set, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_enable = hdmi4_bridge_enable, + .atomic_disable = hdmi4_bridge_disable, .get_edid = hdmi4_bridge_get_edid, };

The HDMI4 encoder is transitioning to the drm_bridge API, implement the last missing operation.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/hdmi4.c | 10 ++++++++++ 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index a8d13a081a9a..73f1fab346e9 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -553,6 +553,15 @@ static void hdmi4_bridge_disable(struct drm_bridge *bridge, mutex_unlock(&hdmi->lock); }

+static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge, + enum drm_connector_status status) +{ + struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); + + if (status == connector_status_disconnected) + hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID); +} + static struct edid *hdmi4_bridge_read_edid(struct omap_hdmi *hdmi, struct drm_connector *connector) { @@ -575,6 +584,7 @@ static const struct drm_bridge_funcs hdmi4_bridge_funcs = { .atomic_reset = drm_atomic_helper_bridge_reset, .atomic_enable = hdmi4_bridge_enable, .atomic_disable = hdmi4_bridge_disable, + .hpd_notify = hdmi4_bridge_hpd_notify, .get_edid = hdmi4_bridge_get_edid, };

In order to integrate with a chain of drm_bridge, the internal VENC encoder has to expose the mode valid, fixup and set, the enable and disable and the get modes operations through the drm_bridge API. Register a bridge at initialisation time to do so.

Most of those operations are removed from the omap_dss_device as they are now called through the drm_bridge API by the DRM atomic helpers. The only exception is the .get_modes() operation that is still invoked through the omap_dss_device-based pipeline.

For the time being make the next bridge in the chain optional as the VENC output is still based on omap_dss_device. The create_connector argument to the bridge attach function is also ignored for the same reason. This will be changed later when removing the related omapdrm-specific display drivers.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/venc.c | 242 ++++++++++++++++++----------- 1 file changed, 154 insertions(+), 88 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c index 977d8d525b43..cb9a689ed612 100644 --- a/drivers/gpu/drm/omapdrm/dss/venc.c +++ b/drivers/gpu/drm/omapdrm/dss/venc.c @@ -13,7 +13,6 @@ #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> -#include <linux/mutex.h> #include <linux/completion.h> #include <linux/delay.h> #include <linux/string.h> @@ -26,6 +25,8 @@ #include <linux/component.h> #include <linux/sys_soc.h>

+#include <drm/drm_bridge.h> + #include "omapdss.h" #include "dss.h"

@@ -289,7 +290,6 @@ static const struct drm_display_mode omap_dss_ntsc_mode = { struct venc_device { struct platform_device *pdev; void __iomem *base; - struct mutex venc_lock; struct regulator *vdda_dac_reg; struct dss_device *dss;

@@ -303,9 +303,11 @@ struct venc_device { bool requires_tv_dac_clk;

struct omap_dss_device output; + struct drm_bridge bridge; };

#define dssdev_to_venc(dssdev) container_of(dssdev, struct venc_device, output) +#define drm_bridge_to_venc(b) container_of(b, struct venc_device, bridge)

static inline void venc_write_reg(struct venc_device *venc, int idx, u32 val) { @@ -477,32 +479,6 @@ static void venc_power_off(struct venc_device *venc) venc_runtime_put(venc); }

-static void venc_display_enable(struct omap_dss_device *dssdev) -{ - struct venc_device *venc = dssdev_to_venc(dssdev); - - DSSDBG("venc_display_enable\n"); - - mutex_lock(&venc->venc_lock); - - venc_power_on(venc); - - mutex_unlock(&venc->venc_lock); -} - -static void venc_display_disable(struct omap_dss_device *dssdev) -{ - struct venc_device *venc = dssdev_to_venc(dssdev); - - DSSDBG("venc_display_disable\n"); - - mutex_lock(&venc->venc_lock); - - venc_power_off(venc); - - mutex_unlock(&venc->venc_lock); -} - static int venc_get_modes(struct omap_dss_device *dssdev, struct drm_connector *connector) { @@ -545,57 +521,6 @@ static enum venc_videomode venc_get_videomode(const struct drm_display_mode *mod return VENC_MODE_UNKNOWN; }

-static void venc_set_timings(struct omap_dss_device *dssdev, - const struct drm_display_mode *mode) -{ - struct venc_device *venc = dssdev_to_venc(dssdev); - enum venc_videomode venc_mode = venc_get_videomode(mode); - - DSSDBG("venc_set_timings\n"); - - mutex_lock(&venc->venc_lock); - - switch (venc_mode) { - default: - WARN_ON_ONCE(1); - /* Fall-through */ - case VENC_MODE_PAL: - venc->config = &venc_config_pal_trm; - break; - - case VENC_MODE_NTSC: - venc->config = &venc_config_ntsc_trm; - break; - } - - dispc_set_tv_pclk(venc->dss->dispc, 13500000); - - mutex_unlock(&venc->venc_lock); -} - -static int venc_check_timings(struct omap_dss_device *dssdev, - struct drm_display_mode *mode) -{ - DSSDBG("venc_check_timings\n"); - - switch (venc_get_videomode(mode)) { - case VENC_MODE_PAL: - drm_mode_copy(mode, &omap_dss_pal_mode); - break; - - case VENC_MODE_NTSC: - drm_mode_copy(mode, &omap_dss_ntsc_mode); - break; - - default: - return -EINVAL; - } - - drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); - drm_mode_set_name(mode); - return 0; -} - static int venc_dump_regs(struct seq_file *s, void *p) { struct venc_device *venc = s->private; @@ -689,15 +614,152 @@ static const struct omap_dss_device_ops venc_ops = { .connect = venc_connect, .disconnect = venc_disconnect,

- .enable = venc_display_enable, - .disable = venc_display_disable, + .get_modes = venc_get_modes, +};

- .check_timings = venc_check_timings, - .set_timings = venc_set_timings, +/* ----------------------------------------------------------------------------- + * DRM Bridge Operations + */

- .get_modes = venc_get_modes, +static int venc_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct venc_device *venc = drm_bridge_to_venc(bridge); + + if (venc->output.next_bridge) + return 0; + + return drm_bridge_attach(bridge->encoder, venc->output.next_bridge, + bridge, flags); +} + +static enum drm_mode_status +venc_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_mode *mode) +{ + switch (venc_get_videomode(mode)) { + case VENC_MODE_PAL: + case VENC_MODE_NTSC: + return MODE_OK; + + default: + return MODE_BAD; + } +} + +static bool venc_bridge_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + const struct drm_display_mode *venc_mode; + + switch (venc_get_videomode(adjusted_mode)) { + case VENC_MODE_PAL: + venc_mode = &omap_dss_pal_mode; + break; + + case VENC_MODE_NTSC: + venc_mode = &omap_dss_ntsc_mode; + break; + + default: + return false; + } + + drm_mode_copy(adjusted_mode, venc_mode); + drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); + drm_mode_set_name(adjusted_mode); + + return true; +} + +static void venc_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) +{ + struct venc_device *venc = drm_bridge_to_venc(bridge); + enum venc_videomode venc_mode = venc_get_videomode(adjusted_mode); + + switch (venc_mode) { + default: + WARN_ON_ONCE(1); + /* Fall-through */ + case VENC_MODE_PAL: + venc->config = &venc_config_pal_trm; + break; + + case VENC_MODE_NTSC: + venc->config = &venc_config_ntsc_trm; + break; + } + + dispc_set_tv_pclk(venc->dss->dispc, 13500000); +} + +static void venc_bridge_enable(struct drm_bridge *bridge) +{ + struct venc_device *venc = drm_bridge_to_venc(bridge); + + venc_power_on(venc); +} + +static void venc_bridge_disable(struct drm_bridge *bridge) +{ + struct venc_device *venc = drm_bridge_to_venc(bridge); + + venc_power_off(venc); +} + +static int venc_bridge_get_modes(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + static const struct drm_display_mode *modes[] = { + &omap_dss_pal_mode, + &omap_dss_ntsc_mode, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(modes); ++i) { + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, modes[i]); + if (!mode) + return i; + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(mode); + drm_mode_probed_add(connector, mode); + } + + return ARRAY_SIZE(modes); +} + +static const struct drm_bridge_funcs venc_bridge_funcs = { + .attach = venc_bridge_attach, + .mode_valid = venc_bridge_mode_valid, + .mode_fixup = venc_bridge_mode_fixup, + .mode_set = venc_bridge_mode_set, + .enable = venc_bridge_enable, + .disable = venc_bridge_disable, + .get_modes = venc_bridge_get_modes, };

+static void venc_bridge_init(struct venc_device *venc) +{ + venc->bridge.funcs = &venc_bridge_funcs; + venc->bridge.of_node = venc->pdev->dev.of_node; + venc->bridge.ops = DRM_BRIDGE_OP_MODES; + venc->bridge.type = DRM_MODE_CONNECTOR_SVIDEO; + venc->bridge.interlace_allowed = true; + + drm_bridge_add(&venc->bridge); +} + +static void venc_bridge_cleanup(struct venc_device *venc) +{ + drm_bridge_remove(&venc->bridge); +} + /* ----------------------------------------------------------------------------- * Component Bind & Unbind */ @@ -747,6 +809,8 @@ static int venc_init_output(struct venc_device *venc) struct omap_dss_device *out = &venc->output; int r;

+ venc_bridge_init(venc); + out->dev = &venc->pdev->dev; out->id = OMAP_DSS_OUTPUT_VENC; out->type = OMAP_DISPLAY_TYPE_VENC; @@ -757,9 +821,11 @@ static int venc_init_output(struct venc_device *venc) out->of_port = 0; out->ops_flags = OMAP_DSS_DEVICE_OP_MODES;

- r = omapdss_device_init_output(out, NULL); - if (r < 0) + r = omapdss_device_init_output(out, &venc->bridge); + if (r < 0) { + venc_bridge_cleanup(venc); return r; + }

omapdss_device_register(out);

@@ -770,6 +836,8 @@ static void venc_uninit_output(struct venc_device *venc) { omapdss_device_unregister(&venc->output); omapdss_device_cleanup_output(&venc->output); + + venc_bridge_cleanup(venc); }

static int venc_probe_of(struct venc_device *venc) @@ -839,8 +907,6 @@ static int venc_probe(struct platform_device *pdev) if (soc_device_match(venc_soc_devices)) venc->requires_tv_dac_clk = true;

- mutex_init(&venc->venc_lock); - venc->config = &venc_config_pal_trm;

venc_mem = platform_get_resource(venc->pdev, IORESOURCE_MEM, 0);

The TPD12S015, OPA362 and analog and HDMI connectors are now supported by DRM bridge drivers, and the omapdrm HDMI and VENC outputs can be handled through the drm_bridge API. Switch the outputs to drm_bridge by making the next bridge mandatory and removing the related omapdrm-specific display drivers.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- arch/arm/configs/omap2plus_defconfig | 7 +- drivers/gpu/drm/omapdrm/displays/Kconfig | 22 -- drivers/gpu/drm/omapdrm/displays/Makefile | 4 - .../omapdrm/displays/connector-analog-tv.c | 97 -------- .../gpu/drm/omapdrm/displays/connector-hdmi.c | 183 --------------- .../gpu/drm/omapdrm/displays/encoder-opa362.c | 137 ----------- .../drm/omapdrm/displays/encoder-tpd12s015.c | 217 ------------------ drivers/gpu/drm/omapdrm/dss/hdmi4.c | 4 +- drivers/gpu/drm/omapdrm/dss/hdmi5.c | 4 +- .../gpu/drm/omapdrm/dss/omapdss-boot-init.c | 5 - drivers/gpu/drm/omapdrm/dss/output.c | 5 + drivers/gpu/drm/omapdrm/dss/venc.c | 4 +- 12 files changed, 14 insertions(+), 675 deletions(-) delete mode 100644 drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c delete mode 100644 drivers/gpu/drm/omapdrm/displays/connector-hdmi.c delete mode 100644 drivers/gpu/drm/omapdrm/displays/encoder-opa362.c delete mode 100644 drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c

diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index c32c338f7704..b9698e217aa7 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -350,14 +350,13 @@ CONFIG_DRM_OMAP=m CONFIG_OMAP5_DSS_HDMI=y CONFIG_OMAP2_DSS_SDI=y CONFIG_OMAP2_DSS_DSI=y -CONFIG_DRM_OMAP_ENCODER_OPA362=m -CONFIG_DRM_OMAP_ENCODER_TPD12S015=m -CONFIG_DRM_OMAP_CONNECTOR_HDMI=m -CONFIG_DRM_OMAP_CONNECTOR_ANALOG_TV=m CONFIG_DRM_OMAP_PANEL_DSI_CM=m CONFIG_DRM_TILCDC=m CONFIG_DRM_PANEL_SIMPLE=m +CONFIG_DRM_DISPLAY_CONNECTOR=m +CONFIG_DRM_SIMPLE_BRIDGE=m CONFIG_DRM_TI_TFP410=m +CONFIG_DRM_TI_TPD12S015=m CONFIG_DRM_PANEL_LG_LB035Q02=m CONFIG_DRM_PANEL_NEC_NL8048HL11=m CONFIG_DRM_PANEL_SHARP_LS037V7DW01=m diff --git a/drivers/gpu/drm/omapdrm/displays/Kconfig b/drivers/gpu/drm/omapdrm/displays/Kconfig index b562a8cd61bf..f2be594c7eff 100644 --- a/drivers/gpu/drm/omapdrm/displays/Kconfig +++ b/drivers/gpu/drm/omapdrm/displays/Kconfig @@ -1,28 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only menu "OMAPDRM External Display Device Drivers"

-config DRM_OMAP_ENCODER_OPA362 - tristate "OPA362 external analog amplifier" - help - Driver for OPA362 external analog TV amplifier controlled - through a GPIO. - -config DRM_OMAP_ENCODER_TPD12S015 - tristate "TPD12S015 HDMI ESD protection and level shifter" - help - Driver for TPD12S015, which offers HDMI ESD protection and level - shifting. - -config DRM_OMAP_CONNECTOR_HDMI - tristate "HDMI Connector" - help - Driver for a generic HDMI connector. - -config DRM_OMAP_CONNECTOR_ANALOG_TV - tristate "Analog TV Connector" - help - Driver for a generic analog TV connector. - config DRM_OMAP_PANEL_DSI_CM tristate "Generic DSI Command Mode Panel" depends on BACKLIGHT_CLASS_DEVICE diff --git a/drivers/gpu/drm/omapdrm/displays/Makefile b/drivers/gpu/drm/omapdrm/displays/Makefile index cb76859dc574..488ddf153613 100644 --- a/drivers/gpu/drm/omapdrm/displays/Makefile +++ b/drivers/gpu/drm/omapdrm/displays/Makefile @@ -1,6 +1,2 @@ # SPDX-License-Identifier: GPL-2.0 -obj-$(CONFIG_DRM_OMAP_ENCODER_OPA362) += encoder-opa362.o -obj-$(CONFIG_DRM_OMAP_ENCODER_TPD12S015) += encoder-tpd12s015.o -obj-$(CONFIG_DRM_OMAP_CONNECTOR_HDMI) += connector-hdmi.o -obj-$(CONFIG_DRM_OMAP_CONNECTOR_ANALOG_TV) += connector-analog-tv.o obj-$(CONFIG_DRM_OMAP_PANEL_DSI_CM) += panel-dsi-cm.o diff --git a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c deleted file mode 100644 index f36aa1885d39..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c +++ /dev/null @@ -1,97 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Analog TV Connector driver - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * Author: Tomi Valkeinen tomi.valkeinen@ti.com - */ - -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/of.h> - -#include "../dss/omapdss.h" - -struct panel_drv_data { - struct omap_dss_device dssdev; - - struct device *dev; -}; - -#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) - -static int tvc_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return 0; -} - -static void tvc_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ -} - -static const struct omap_dss_device_ops tvc_ops = { - .connect = tvc_connect, - .disconnect = tvc_disconnect, -}; - -static int tvc_probe(struct platform_device *pdev) -{ - struct panel_drv_data *ddata; - struct omap_dss_device *dssdev; - - ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); - if (!ddata) - return -ENOMEM; - - platform_set_drvdata(pdev, ddata); - ddata->dev = &pdev->dev; - - dssdev = &ddata->dssdev; - dssdev->ops = &tvc_ops; - dssdev->dev = &pdev->dev; - dssdev->type = OMAP_DISPLAY_TYPE_VENC; - dssdev->display = true; - dssdev->owner = THIS_MODULE; - dssdev->of_port = 0; - - omapdss_display_init(dssdev); - omapdss_device_register(dssdev); - - return 0; -} - -static int __exit tvc_remove(struct platform_device *pdev) -{ - struct panel_drv_data *ddata = platform_get_drvdata(pdev); - - omapdss_device_unregister(&ddata->dssdev); - - return 0; -} - -static const struct of_device_id tvc_of_match[] = { - { .compatible = "omapdss,svideo-connector", }, - { .compatible = "omapdss,composite-video-connector", }, - {}, -}; - -MODULE_DEVICE_TABLE(of, tvc_of_match); - -static struct platform_driver tvc_connector_driver = { - .probe = tvc_probe, - .remove = __exit_p(tvc_remove), - .driver = { - .name = "connector-analog-tv", - .of_match_table = tvc_of_match, - .suppress_bind_attrs = true, - }, -}; - -module_platform_driver(tvc_connector_driver); - -MODULE_AUTHOR("Tomi Valkeinen tomi.valkeinen@ti.com"); -MODULE_DESCRIPTION("Analog TV Connector driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c deleted file mode 100644 index 37c212491cd3..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c +++ /dev/null @@ -1,183 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * HDMI Connector driver - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * Author: Tomi Valkeinen tomi.valkeinen@ti.com - */ - -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/platform_device.h> -#include <linux/slab.h> - -#include "../dss/omapdss.h" - -struct panel_drv_data { - struct omap_dss_device dssdev; - void (*hpd_cb)(void *cb_data, enum drm_connector_status status); - void *hpd_cb_data; - struct mutex hpd_lock; - - struct device *dev; - - struct gpio_desc *hpd_gpio; -}; - -#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) - -static int hdmic_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return 0; -} - -static void hdmic_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ -} - -static bool hdmic_detect(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - return gpiod_get_value_cansleep(ddata->hpd_gpio); -} - -static void hdmic_register_hpd_cb(struct omap_dss_device *dssdev, - void (*cb)(void *cb_data, - enum drm_connector_status status), - void *cb_data) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - mutex_lock(&ddata->hpd_lock); - ddata->hpd_cb = cb; - ddata->hpd_cb_data = cb_data; - mutex_unlock(&ddata->hpd_lock); -} - -static void hdmic_unregister_hpd_cb(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - mutex_lock(&ddata->hpd_lock); - ddata->hpd_cb = NULL; - ddata->hpd_cb_data = NULL; - mutex_unlock(&ddata->hpd_lock); -} - -static const struct omap_dss_device_ops hdmic_ops = { - .connect = hdmic_connect, - .disconnect = hdmic_disconnect, - - .detect = hdmic_detect, - .register_hpd_cb = hdmic_register_hpd_cb, - .unregister_hpd_cb = hdmic_unregister_hpd_cb, -}; - -static irqreturn_t hdmic_hpd_isr(int irq, void *data) -{ - struct panel_drv_data *ddata = data; - - mutex_lock(&ddata->hpd_lock); - if (ddata->hpd_cb) { - enum drm_connector_status status; - - if (hdmic_detect(&ddata->dssdev)) - status = connector_status_connected; - else - status = connector_status_disconnected; - - ddata->hpd_cb(ddata->hpd_cb_data, status); - } - mutex_unlock(&ddata->hpd_lock); - - return IRQ_HANDLED; -} - -static int hdmic_probe(struct platform_device *pdev) -{ - struct panel_drv_data *ddata; - struct omap_dss_device *dssdev; - struct gpio_desc *gpio; - int r; - - ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); - if (!ddata) - return -ENOMEM; - - platform_set_drvdata(pdev, ddata); - ddata->dev = &pdev->dev; - - mutex_init(&ddata->hpd_lock); - - /* HPD GPIO */ - gpio = devm_gpiod_get_optional(&pdev->dev, "hpd", GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(&pdev->dev, "failed to parse HPD gpio\n"); - return PTR_ERR(gpio); - } - - ddata->hpd_gpio = gpio; - - if (ddata->hpd_gpio) { - r = devm_request_threaded_irq(&pdev->dev, - gpiod_to_irq(ddata->hpd_gpio), - NULL, hdmic_hpd_isr, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | - IRQF_ONESHOT, - "hdmic hpd", ddata); - if (r) - return r; - } - - dssdev = &ddata->dssdev; - dssdev->ops = &hdmic_ops; - dssdev->dev = &pdev->dev; - dssdev->type = OMAP_DISPLAY_TYPE_HDMI; - dssdev->display = true; - dssdev->owner = THIS_MODULE; - dssdev->of_port = 0; - dssdev->ops_flags = ddata->hpd_gpio - ? OMAP_DSS_DEVICE_OP_DETECT | OMAP_DSS_DEVICE_OP_HPD - : 0; - - omapdss_display_init(dssdev); - omapdss_device_register(dssdev); - - return 0; -} - -static int __exit hdmic_remove(struct platform_device *pdev) -{ - struct panel_drv_data *ddata = platform_get_drvdata(pdev); - - omapdss_device_unregister(&ddata->dssdev); - - return 0; -} - -static const struct of_device_id hdmic_of_match[] = { - { .compatible = "omapdss,hdmi-connector", }, - {}, -}; - -MODULE_DEVICE_TABLE(of, hdmic_of_match); - -static struct platform_driver hdmi_connector_driver = { - .probe = hdmic_probe, - .remove = __exit_p(hdmic_remove), - .driver = { - .name = "connector-hdmi", - .of_match_table = hdmic_of_match, - .suppress_bind_attrs = true, - }, -}; - -module_platform_driver(hdmi_connector_driver); - -MODULE_AUTHOR("Tomi Valkeinen tomi.valkeinen@ti.com"); -MODULE_DESCRIPTION("HDMI Connector driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c b/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c deleted file mode 100644 index 252705222ef1..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c +++ /dev/null @@ -1,137 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * OPA362 analog video amplifier with output/power control - * - * Copyright (C) 2014 Golden Delicious Computers - * Author: H. Nikolaus Schaller hns@goldelico.com - * - * based on encoder-tfp410 - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * Author: Tomi Valkeinen tomi.valkeinen@ti.com - */ - -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/slab.h> - -#include "../dss/omapdss.h" - -struct panel_drv_data { - struct omap_dss_device dssdev; - - struct gpio_desc *enable_gpio; -}; - -#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) - -static int opa362_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return omapdss_device_connect(dst->dss, dst, dst->next); -} - -static void opa362_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - omapdss_device_disconnect(dst, dst->next); -} - -static void opa362_enable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - if (ddata->enable_gpio) - gpiod_set_value_cansleep(ddata->enable_gpio, 1); -} - -static void opa362_disable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - if (ddata->enable_gpio) - gpiod_set_value_cansleep(ddata->enable_gpio, 0); -} - -static const struct omap_dss_device_ops opa362_ops = { - .connect = opa362_connect, - .disconnect = opa362_disconnect, - .enable = opa362_enable, - .disable = opa362_disable, -}; - -static int opa362_probe(struct platform_device *pdev) -{ - struct panel_drv_data *ddata; - struct omap_dss_device *dssdev; - struct gpio_desc *gpio; - - dev_dbg(&pdev->dev, "probe\n"); - - ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); - if (!ddata) - return -ENOMEM; - - platform_set_drvdata(pdev, ddata); - - gpio = devm_gpiod_get_optional(&pdev->dev, "enable", GPIOD_OUT_LOW); - if (IS_ERR(gpio)) - return PTR_ERR(gpio); - - ddata->enable_gpio = gpio; - - dssdev = &ddata->dssdev; - dssdev->ops = &opa362_ops; - dssdev->dev = &pdev->dev; - dssdev->type = OMAP_DISPLAY_TYPE_VENC; - dssdev->owner = THIS_MODULE; - dssdev->of_port = 1; - - dssdev->next = omapdss_of_find_connected_device(pdev->dev.of_node, 1); - if (IS_ERR(dssdev->next)) { - if (PTR_ERR(dssdev->next) != -EPROBE_DEFER) - dev_err(&pdev->dev, "failed to find video sink\n"); - return PTR_ERR(dssdev->next); - } - - omapdss_device_register(dssdev); - - return 0; -} - -static int __exit opa362_remove(struct platform_device *pdev) -{ - struct panel_drv_data *ddata = platform_get_drvdata(pdev); - struct omap_dss_device *dssdev = &ddata->dssdev; - - if (dssdev->next) - omapdss_device_put(dssdev->next); - omapdss_device_unregister(&ddata->dssdev); - - opa362_disable(dssdev); - - return 0; -} - -static const struct of_device_id opa362_of_match[] = { - { .compatible = "omapdss,ti,opa362", }, - {}, -}; -MODULE_DEVICE_TABLE(of, opa362_of_match); - -static struct platform_driver opa362_driver = { - .probe = opa362_probe, - .remove = __exit_p(opa362_remove), - .driver = { - .name = "amplifier-opa362", - .of_match_table = opa362_of_match, - .suppress_bind_attrs = true, - }, -}; - -module_platform_driver(opa362_driver); - -MODULE_AUTHOR("H. Nikolaus Schaller hns@goldelico.com"); -MODULE_DESCRIPTION("OPA362 analog video amplifier with output/power control"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c deleted file mode 100644 index 857ae84cd7d1..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c +++ /dev/null @@ -1,217 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * TPD12S015 HDMI ESD protection & level shifter chip driver - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * Author: Tomi Valkeinen tomi.valkeinen@ti.com - */ - -#include <linux/completion.h> -#include <linux/delay.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/platform_device.h> -#include <linux/gpio/consumer.h> -#include <linux/mutex.h> - -#include "../dss/omapdss.h" - -struct panel_drv_data { - struct omap_dss_device dssdev; - void (*hpd_cb)(void *cb_data, enum drm_connector_status status); - void *hpd_cb_data; - struct mutex hpd_lock; - - struct gpio_desc *ct_cp_hpd_gpio; - struct gpio_desc *ls_oe_gpio; - struct gpio_desc *hpd_gpio; -}; - -#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) - -static int tpd_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - struct panel_drv_data *ddata = to_panel_data(dst); - int r; - - r = omapdss_device_connect(dst->dss, dst, dst->next); - if (r) - return r; - - gpiod_set_value_cansleep(ddata->ct_cp_hpd_gpio, 1); - gpiod_set_value_cansleep(ddata->ls_oe_gpio, 1); - - /* DC-DC converter needs at max 300us to get to 90% of 5V */ - udelay(300); - - return 0; -} - -static void tpd_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - struct panel_drv_data *ddata = to_panel_data(dst); - - gpiod_set_value_cansleep(ddata->ct_cp_hpd_gpio, 0); - gpiod_set_value_cansleep(ddata->ls_oe_gpio, 0); - - omapdss_device_disconnect(dst, dst->next); -} - -static bool tpd_detect(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - return gpiod_get_value_cansleep(ddata->hpd_gpio); -} - -static void tpd_register_hpd_cb(struct omap_dss_device *dssdev, - void (*cb)(void *cb_data, - enum drm_connector_status status), - void *cb_data) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - mutex_lock(&ddata->hpd_lock); - ddata->hpd_cb = cb; - ddata->hpd_cb_data = cb_data; - mutex_unlock(&ddata->hpd_lock); -} - -static void tpd_unregister_hpd_cb(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - mutex_lock(&ddata->hpd_lock); - ddata->hpd_cb = NULL; - ddata->hpd_cb_data = NULL; - mutex_unlock(&ddata->hpd_lock); -} - -static const struct omap_dss_device_ops tpd_ops = { - .connect = tpd_connect, - .disconnect = tpd_disconnect, - .detect = tpd_detect, - .register_hpd_cb = tpd_register_hpd_cb, - .unregister_hpd_cb = tpd_unregister_hpd_cb, -}; - -static irqreturn_t tpd_hpd_isr(int irq, void *data) -{ - struct panel_drv_data *ddata = data; - - mutex_lock(&ddata->hpd_lock); - if (ddata->hpd_cb) { - enum drm_connector_status status; - - if (tpd_detect(&ddata->dssdev)) - status = connector_status_connected; - else - status = connector_status_disconnected; - - ddata->hpd_cb(ddata->hpd_cb_data, status); - } - mutex_unlock(&ddata->hpd_lock); - - return IRQ_HANDLED; -} - -static int tpd_probe(struct platform_device *pdev) -{ - struct omap_dss_device *dssdev; - struct panel_drv_data *ddata; - int r; - struct gpio_desc *gpio; - - ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); - if (!ddata) - return -ENOMEM; - - platform_set_drvdata(pdev, ddata); - - gpio = devm_gpiod_get_index_optional(&pdev->dev, NULL, 0, - GPIOD_OUT_LOW); - if (IS_ERR(gpio)) - return PTR_ERR(gpio); - - ddata->ct_cp_hpd_gpio = gpio; - - gpio = devm_gpiod_get_index_optional(&pdev->dev, NULL, 1, - GPIOD_OUT_LOW); - if (IS_ERR(gpio)) - return PTR_ERR(gpio); - - ddata->ls_oe_gpio = gpio; - - gpio = devm_gpiod_get_index(&pdev->dev, NULL, 2, - GPIOD_IN); - if (IS_ERR(gpio)) - return PTR_ERR(gpio); - - ddata->hpd_gpio = gpio; - - mutex_init(&ddata->hpd_lock); - - r = devm_request_threaded_irq(&pdev->dev, gpiod_to_irq(ddata->hpd_gpio), - NULL, tpd_hpd_isr, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - "tpd12s015 hpd", ddata); - if (r) - return r; - - dssdev = &ddata->dssdev; - dssdev->ops = &tpd_ops; - dssdev->dev = &pdev->dev; - dssdev->type = OMAP_DISPLAY_TYPE_HDMI; - dssdev->owner = THIS_MODULE; - dssdev->of_port = 1; - dssdev->ops_flags = OMAP_DSS_DEVICE_OP_DETECT - | OMAP_DSS_DEVICE_OP_HPD; - - dssdev->next = omapdss_of_find_connected_device(pdev->dev.of_node, 1); - if (IS_ERR(dssdev->next)) { - if (PTR_ERR(dssdev->next) != -EPROBE_DEFER) - dev_err(&pdev->dev, "failed to find video sink\n"); - return PTR_ERR(dssdev->next); - } - - omapdss_device_register(dssdev); - - return 0; -} - -static int __exit tpd_remove(struct platform_device *pdev) -{ - struct panel_drv_data *ddata = platform_get_drvdata(pdev); - struct omap_dss_device *dssdev = &ddata->dssdev; - - if (dssdev->next) - omapdss_device_put(dssdev->next); - omapdss_device_unregister(&ddata->dssdev); - - return 0; -} - -static const struct of_device_id tpd_of_match[] = { - { .compatible = "omapdss,ti,tpd12s015", }, - {}, -}; - -MODULE_DEVICE_TABLE(of, tpd_of_match); - -static struct platform_driver tpd_driver = { - .probe = tpd_probe, - .remove = __exit_p(tpd_remove), - .driver = { - .name = "tpd12s015", - .of_match_table = tpd_of_match, - .suppress_bind_attrs = true, - }, -}; - -module_platform_driver(tpd_driver); - -MODULE_AUTHOR("Tomi Valkeinen tomi.valkeinen@ti.com"); -MODULE_DESCRIPTION("TPD12S015 driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index 73f1fab346e9..52daae36935a 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -444,8 +444,8 @@ static int hdmi4_bridge_attach(struct drm_bridge *bridge, { struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);

- if (!hdmi->output.next_bridge) - return 0; + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) + return -EINVAL;

return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge, bridge, flags); diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c index 52184797c858..f07fd5c6dc39 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c @@ -422,8 +422,8 @@ static int hdmi5_bridge_attach(struct drm_bridge *bridge, { struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);

- if (!hdmi->output.next_bridge) - return 0; + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) + return -EINVAL;

return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge, bridge, flags); diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c b/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c index ce67891eedd4..00372f4ce711 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c +++ b/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c @@ -174,12 +174,7 @@ static const struct of_device_id omapdss_of_match[] __initconst = { };

static const struct of_device_id omapdss_of_fixups_whitelist[] __initconst = { - { .compatible = "composite-video-connector" }, - { .compatible = "hdmi-connector" }, { .compatible = "panel-dsi-cm" }, - { .compatible = "svideo-connector" }, - { .compatible = "ti,opa362" }, - { .compatible = "ti,tpd12s015" }, {}, };

diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c index 9ba7cc8539a1..ce21c798cca6 100644 --- a/drivers/gpu/drm/omapdrm/dss/output.c +++ b/drivers/gpu/drm/omapdrm/dss/output.c @@ -60,6 +60,11 @@ int omapdss_device_init_output(struct omap_dss_device *out, }

if (local_bridge) { + if (!out->bridge) { + ret = -EPROBE_DEFER; + goto error; + } + out->next_bridge = out->bridge; out->bridge = local_bridge; } diff --git a/drivers/gpu/drm/omapdrm/dss/venc.c b/drivers/gpu/drm/omapdrm/dss/venc.c index cb9a689ed612..c8c19967a42f 100644 --- a/drivers/gpu/drm/omapdrm/dss/venc.c +++ b/drivers/gpu/drm/omapdrm/dss/venc.c @@ -626,8 +626,8 @@ static int venc_bridge_attach(struct drm_bridge *bridge, { struct venc_device *venc = drm_bridge_to_venc(bridge);

- if (venc->output.next_bridge) - return 0; + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) + return -EINVAL;

return drm_bridge_attach(bridge->encoder, venc->output.next_bridge, bridge, flags);

Now that the HDMI outputs are driven fully through the drm_bridge API their omap_dss_device operations are not used anymore. Remove them.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/hdmi.h | 1 - drivers/gpu/drm/omapdrm/dss/hdmi4.c | 18 ------------------ drivers/gpu/drm/omapdrm/dss/hdmi5.c | 18 ------------------ 3 files changed, 37 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi.h b/drivers/gpu/drm/omapdrm/dss/hdmi.h index bd43f6abf27b..3a40833d3368 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi.h +++ b/drivers/gpu/drm/omapdrm/dss/hdmi.h @@ -380,7 +380,6 @@ struct omap_hdmi { bool display_enabled; };

-#define dssdev_to_hdmi(dssdev) container_of(dssdev, struct omap_hdmi, output) #define drm_bridge_to_hdmi(b) container_of(b, struct omap_hdmi, bridge)

#endif diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index b9bcd6e681e8..96ef7bd52199 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -309,18 +309,6 @@ void hdmi4_core_disable(struct hdmi_core_data *core) mutex_unlock(&hdmi->lock); }

-static int hdmi_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return omapdss_device_connect(dst->dss, dst, dst->next); -} - -static void hdmi_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - omapdss_device_disconnect(dst, dst->next); -} - static struct edid * hdmi_do_read_edid(struct omap_hdmi *hdmi, struct edid *(*read)(struct omap_hdmi *hdmi, @@ -370,11 +358,6 @@ hdmi_do_read_edid(struct omap_hdmi *hdmi, return edid; }

-static const struct omap_dss_device_ops hdmi_ops = { - .connect = hdmi_connect, - .disconnect = hdmi_disconnect, -}; - /* ----------------------------------------------------------------------------- * DRM Bridge Operations */ @@ -741,7 +724,6 @@ static int hdmi4_init_output(struct omap_hdmi *hdmi) out->type = OMAP_DISPLAY_TYPE_HDMI; out->name = "hdmi.0"; out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; - out->ops = &hdmi_ops; out->owner = THIS_MODULE; out->of_port = 0;

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c index effe4a9401ff..6cb709c775d6 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c @@ -307,18 +307,6 @@ static void hdmi_core_disable(struct omap_hdmi *hdmi) mutex_unlock(&hdmi->lock); }

-static int hdmi_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return omapdss_device_connect(dst->dss, dst, dst->next); -} - -static void hdmi_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - omapdss_device_disconnect(dst, dst->next); -} - static struct edid * hdmi_do_read_edid(struct omap_hdmi *hdmi, struct edid *(*read)(struct omap_hdmi *hdmi, @@ -363,11 +351,6 @@ hdmi_do_read_edid(struct omap_hdmi *hdmi, return (struct edid *)edid; }

-static const struct omap_dss_device_ops hdmi_ops = { - .connect = hdmi_connect, - .disconnect = hdmi_disconnect, -}; - /* ----------------------------------------------------------------------------- * DRM Bridge Operations */ @@ -715,7 +698,6 @@ static int hdmi5_init_output(struct omap_hdmi *hdmi) out->type = OMAP_DISPLAY_TYPE_HDMI; out->name = "hdmi.0"; out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; - out->ops = &hdmi_ops; out->owner = THIS_MODULE; out->of_port = 0;

Now that the omap_dss_device EDID read operation has been removed, simplify the bridge-based EDID access by merging multiple functions together.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/hdmi4.c | 96 ++++++++++++----------------- 1 file changed, 40 insertions(+), 56 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c index 96ef7bd52199..2578c95570f6 100644 --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c @@ -309,55 +309,6 @@ void hdmi4_core_disable(struct hdmi_core_data *core) mutex_unlock(&hdmi->lock); }

-static struct edid * -hdmi_do_read_edid(struct omap_hdmi *hdmi, - struct edid *(*read)(struct omap_hdmi *hdmi, - struct drm_connector *connector), - struct drm_connector *connector) -{ - struct edid *edid = NULL; - unsigned int cec_addr; - bool need_enable; - int r; - - need_enable = hdmi->core_enabled == false; - - if (need_enable) { - r = hdmi4_core_enable(&hdmi->core); - if (r) - return NULL; - } - - mutex_lock(&hdmi->lock); - r = hdmi_runtime_get(hdmi); - BUG_ON(r); - - r = hdmi4_core_ddc_init(&hdmi->core); - if (r) - goto done; - - edid = read(hdmi, connector); - -done: - hdmi_runtime_put(hdmi); - mutex_unlock(&hdmi->lock); - - if (edid && edid->extensions) { - unsigned int len = (edid->extensions + 1) * EDID_LENGTH; - - cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL); - } else { - cec_addr = CEC_PHYS_ADDR_INVALID; - } - - hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr); - - if (need_enable) - hdmi4_core_disable(&hdmi->core); - - return edid; -} - /* ----------------------------------------------------------------------------- * DRM Bridge Operations */ @@ -485,18 +436,51 @@ static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge, hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID); }

-static struct edid *hdmi4_bridge_read_edid(struct omap_hdmi *hdmi, - struct drm_connector *connector) -{ - return drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core); -} - static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge, struct drm_connector *connector) { struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge); + struct edid *edid = NULL; + unsigned int cec_addr; + bool need_enable; + int r; + + need_enable = hdmi->core_enabled == false; + + if (need_enable) { + r = hdmi4_core_enable(&hdmi->core); + if (r) + return NULL; + } + + mutex_lock(&hdmi->lock); + r = hdmi_runtime_get(hdmi); + BUG_ON(r); + + r = hdmi4_core_ddc_init(&hdmi->core); + if (r) + goto done; + + edid = drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core);

- return hdmi_do_read_edid(hdmi, hdmi4_bridge_read_edid, connector); +done: + hdmi_runtime_put(hdmi); + mutex_unlock(&hdmi->lock); + + if (edid && edid->extensions) { + unsigned int len = (edid->extensions + 1) * EDID_LENGTH; + + cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL); + } else { + cec_addr = CEC_PHYS_ADDR_INVALID; + } + + hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr); + + if (need_enable) + hdmi4_core_disable(&hdmi->core); + + return edid; }

static const struct drm_bridge_funcs hdmi4_bridge_funcs = {

This makes it easier to quickly locate duplicate includes.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/dpi.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c index 2d0eb5fcbb5b..f8354271ce6f 100644 --- a/drivers/gpu/drm/omapdrm/dss/dpi.c +++ b/drivers/gpu/drm/omapdrm/dss/dpi.c @@ -9,20 +9,20 @@

#define DSS_SUBSYS_NAME "DPI"

-#include <linux/kernel.h> +#include <linux/clk.h> #include <linux/delay.h> -#include <linux/export.h> #include <linux/err.h> #include <linux/errno.h> +#include <linux/export.h> +#include <linux/kernel.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/regulator/consumer.h> #include <linux/string.h> -#include <linux/of.h> -#include <linux/clk.h> #include <linux/sys_soc.h>

-#include "omapdss.h" #include "dss.h" +#include "omapdss.h"

struct dpi_data { struct platform_device *pdev;

The dpi_set_pll_clk() and dpi_set_dispc_clk() return various information through pointer arguments that are never used by the callers. Remove them to simplify the clock setting API.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/dpi.c | 32 ++++++++----------------------- 1 file changed, 8 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c index dccf81e4ce64..c167bd1116ec 100644 --- a/drivers/gpu/drm/omapdrm/dss/dpi.c +++ b/drivers/gpu/drm/omapdrm/dss/dpi.c @@ -287,9 +287,7 @@ static bool dpi_dss_clk_calc(struct dpi_data *dpi, unsigned long pck,

-static int dpi_set_pll_clk(struct dpi_data *dpi, enum omap_channel channel, - unsigned long pck_req, unsigned long *fck, int *lck_div, - int *pck_div) +static int dpi_set_pll_clk(struct dpi_data *dpi, unsigned long pck_req) { struct dpi_clk_calc_ctx ctx; int r; @@ -303,19 +301,15 @@ static int dpi_set_pll_clk(struct dpi_data *dpi, enum omap_channel channel, if (r) return r;

- dss_select_lcd_clk_source(dpi->dss, channel, dpi->clk_src); + dss_select_lcd_clk_source(dpi->dss, dpi->output.dispc_channel, + dpi->clk_src);

dpi->mgr_config.clock_info = ctx.dispc_cinfo;

- *fck = ctx.pll_cinfo.clkout[ctx.clkout_idx]; - *lck_div = ctx.dispc_cinfo.lck_div; - *pck_div = ctx.dispc_cinfo.pck_div; - return 0; }

-static int dpi_set_dispc_clk(struct dpi_data *dpi, unsigned long pck_req, - unsigned long *fck, int *lck_div, int *pck_div) +static int dpi_set_dispc_clk(struct dpi_data *dpi, unsigned long pck_req) { struct dpi_clk_calc_ctx ctx; int r; @@ -331,29 +325,19 @@ static int dpi_set_dispc_clk(struct dpi_data *dpi, unsigned long pck_req,

dpi->mgr_config.clock_info = ctx.dispc_cinfo;

- *fck = ctx.fck; - *lck_div = ctx.dispc_cinfo.lck_div; - *pck_div = ctx.dispc_cinfo.pck_div; - return 0; }

static int dpi_set_mode(struct dpi_data *dpi) { - int lck_div = 0, pck_div = 0; - unsigned long fck = 0; - int r = 0; + int r;

if (dpi->pll) - r = dpi_set_pll_clk(dpi, dpi->output.dispc_channel, - dpi->pixelclock, &fck, &lck_div, &pck_div); + r = dpi_set_pll_clk(dpi, dpi->pixelclock); else - r = dpi_set_dispc_clk(dpi, dpi->pixelclock, &fck, - &lck_div, &pck_div); - if (r) - return r; + r = dpi_set_dispc_clk(dpi, dpi->pixelclock);

- return 0; + return r; }

static void dpi_config_lcd_manager(struct dpi_data *dpi)

This makes it easier to quickly locate duplicate includes.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/sdi.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/sdi.c b/drivers/gpu/drm/omapdrm/dss/sdi.c index 11aa2f712ff4..7dedfcc86922 100644 --- a/drivers/gpu/drm/omapdrm/dss/sdi.c +++ b/drivers/gpu/drm/omapdrm/dss/sdi.c @@ -6,17 +6,17 @@

#define DSS_SUBSYS_NAME "SDI"

-#include <linux/kernel.h> #include <linux/delay.h> #include <linux/err.h> -#include <linux/regulator/consumer.h> #include <linux/export.h> +#include <linux/kernel.h> +#include <linux/of.h> #include <linux/platform_device.h> +#include <linux/regulator/consumer.h> #include <linux/string.h> -#include <linux/of.h>

-#include "omapdss.h" #include "dss.h" +#include "omapdss.h"

struct sdi_device { struct platform_device *pdev;

The omap_connector implementation is now used for DSI only. Hardcode its type and drop unused code.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com --- drivers/gpu/drm/omapdrm/dss/base.c | 23 ------------------ drivers/gpu/drm/omapdrm/dss/omapdss.h | 1 - drivers/gpu/drm/omapdrm/omap_connector.c | 31 ++---------------------- 3 files changed, 2 insertions(+), 53 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c index 2db3bd2f19db..455b410f7401 100644 --- a/drivers/gpu/drm/omapdrm/dss/base.c +++ b/drivers/gpu/drm/omapdrm/dss/base.c @@ -286,29 +286,6 @@ void omapdss_device_post_disable(struct omap_dss_device *dssdev) } EXPORT_SYMBOL_GPL(omapdss_device_post_disable);

-unsigned int omapdss_device_connector_type(enum omap_display_type type) -{ - switch (type) { - case OMAP_DISPLAY_TYPE_HDMI: - return DRM_MODE_CONNECTOR_HDMIA; - case OMAP_DISPLAY_TYPE_DVI: - return DRM_MODE_CONNECTOR_DVID; - case OMAP_DISPLAY_TYPE_DSI: - return DRM_MODE_CONNECTOR_DSI; - case OMAP_DISPLAY_TYPE_DPI: - case OMAP_DISPLAY_TYPE_DBI: - return DRM_MODE_CONNECTOR_DPI; - case OMAP_DISPLAY_TYPE_VENC: - /* TODO: This could also be composite */ - return DRM_MODE_CONNECTOR_SVIDEO; - case OMAP_DISPLAY_TYPE_SDI: - return DRM_MODE_CONNECTOR_LVDS; - default: - return DRM_MODE_CONNECTOR_Unknown; - } -} -EXPORT_SYMBOL_GPL(omapdss_device_connector_type); - /* ----------------------------------------------------------------------------- * Components Handling */ diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index cb79e05c902d..2e5453df2293 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -454,7 +454,6 @@ void omapdss_device_pre_enable(struct omap_dss_device *dssdev); void omapdss_device_enable(struct omap_dss_device *dssdev); void omapdss_device_disable(struct omap_dss_device *dssdev); void omapdss_device_post_disable(struct omap_dss_device *dssdev); -unsigned int omapdss_device_connector_type(enum omap_display_type type);

int omap_dss_get_num_overlay_managers(void);

diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c index baa31ed1f993..528764566b17 100644 --- a/drivers/gpu/drm/omapdrm/omap_connector.c +++ b/drivers/gpu/drm/omapdrm/omap_connector.c @@ -24,22 +24,7 @@ struct omap_connector { static enum drm_connector_status omap_connector_detect( struct drm_connector *connector, bool force) { - enum drm_connector_status status; - - switch (connector->connector_type) { - case DRM_MODE_CONNECTOR_DPI: - case DRM_MODE_CONNECTOR_LVDS: - case DRM_MODE_CONNECTOR_DSI: - status = connector_status_connected; - break; - default: - status = connector_status_unknown; - break; - } - - VERB("%s: %d (force=%d)", connector->name, status, force); - - return status; + return connector_status_connected; }

static void omap_connector_destroy(struct drm_connector *connector) @@ -138,18 +123,6 @@ static const struct drm_connector_helper_funcs omap_connector_helper_funcs = { .mode_valid = omap_connector_mode_valid, };

-static int omap_connector_get_type(struct omap_dss_device *output) -{ - struct omap_dss_device *display; - enum omap_display_type type; - - display = omapdss_display_get(output); - type = display->type; - omapdss_device_put(display); - - return omapdss_device_connector_type(type); -} - /* initialize connector */ struct drm_connector *omap_connector_init(struct drm_device *dev, struct omap_dss_device *output, @@ -171,7 +144,7 @@ struct drm_connector *omap_connector_init(struct drm_device *dev, connector->doublescan_allowed = 0;

drm_connector_init(dev, connector, &omap_connector_funcs, - omap_connector_get_type(output)); + DRM_MODE_CONNECTOR_DSI); drm_connector_helper_add(connector, &omap_connector_helper_funcs);

return connector;

The omapdss_of_find_connected_device() function isn't used anymore, remove it.

Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Tested-by: Sebastian Reichel sebastian.reichel@collabora.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/dss/Makefile | 2 +- drivers/gpu/drm/omapdrm/dss/dss-of.c | 28 --------------------------- drivers/gpu/drm/omapdrm/dss/omapdss.h | 3 --- 3 files changed, 1 insertion(+), 32 deletions(-) delete mode 100644 drivers/gpu/drm/omapdrm/dss/dss-of.c

diff --git a/drivers/gpu/drm/omapdrm/dss/Makefile b/drivers/gpu/drm/omapdrm/dss/Makefile index 5950c3f52c2e..f967e6948f2e 100644 --- a/drivers/gpu/drm/omapdrm/dss/Makefile +++ b/drivers/gpu/drm/omapdrm/dss/Makefile @@ -2,7 +2,7 @@ obj-$(CONFIG_OMAP2_DSS_INIT) += omapdss-boot-init.o

obj-$(CONFIG_OMAP_DSS_BASE) += omapdss-base.o -omapdss-base-y := base.o display.o dss-of.o output.o +omapdss-base-y := base.o display.o output.o

obj-$(CONFIG_OMAP2_DSS) += omapdss.o # Core DSS files diff --git a/drivers/gpu/drm/omapdrm/dss/dss-of.c b/drivers/gpu/drm/omapdrm/dss/dss-of.c deleted file mode 100644 index b7981f3b80ad..000000000000 --- a/drivers/gpu/drm/omapdrm/dss/dss-of.c +++ /dev/null @@ -1,28 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * Author: Tomi Valkeinen tomi.valkeinen@ti.com - */ - -#include <linux/err.h> -#include <linux/of.h> -#include <linux/of_graph.h> - -#include "omapdss.h" - -struct omap_dss_device * -omapdss_of_find_connected_device(struct device_node *node, unsigned int port) -{ - struct device_node *remote_node; - struct omap_dss_device *dssdev; - - remote_node = of_graph_get_remote_node(node, port, 0); - if (!remote_node) - return NULL; - - dssdev = omapdss_find_device_by_node(remote_node); - of_node_put(remote_node); - - return dssdev ? dssdev : ERR_PTR(-EPROBE_DEFER); -} -EXPORT_SYMBOL_GPL(omapdss_of_find_connected_device); diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index 315a356fa0c0..cbbe10b2b60d 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -477,9 +477,6 @@ static inline bool omapdss_device_is_enabled(struct omap_dss_device *dssdev) return dssdev->state == OMAP_DSS_DISPLAY_ACTIVE; }

-struct omap_dss_device * -omapdss_of_find_connected_device(struct device_node *node, unsigned int port); - enum dss_writeback_channel { DSS_WB_LCD1_MGR = 0, DSS_WB_LCD2_MGR = 1,