From: Sebastian Reichel sebastian.reichel@collabora.com
In order to integrate with a chain of drm_bridge, the internal DSI output has to expose its operations through the drm_bridge API. Register a bridge at initialisation time to do so and remove the omap_dss_device operations that are now unused.
Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/omapdrm/dss/dsi.c | 134 ++++++++++++++++++++---------- 1 file changed, 89 insertions(+), 45 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 549386f3897b..fcb51aedf847 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -35,6 +35,7 @@ #include <linux/component.h> #include <linux/sys_soc.h>
+#include <drm/drm_bridge.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_panel.h> #include <video/mipi_display.h> @@ -438,6 +439,7 @@ struct dsi_data { struct omap_dss_dsi_videomode_timings vm_timings;
struct omap_dss_device output; + struct drm_bridge bridge; };
struct dsi_packet_sent_handler_data { @@ -450,6 +452,9 @@ static bool dsi_perf; module_param(dsi_perf, bool, 0644); #endif
+#define drm_bridge_to_dsi(bridge) \ + container_of(bridge, struct dsi_data, bridge) + static inline struct dsi_data *to_dsi_data(struct omap_dss_device *dssdev) { return dev_get_drvdata(dssdev->dev); @@ -5009,50 +5014,7 @@ static int dsi_get_clocks(struct dsi_data *dsi) return 0; }
-static void dsi_set_timings(struct omap_dss_device *dssdev, - const struct drm_display_mode *mode) -{ - DSSDBG("dsi_set_timings\n"); - dsi_set_config(dssdev, mode); -} - -static int dsi_check_timings(struct omap_dss_device *dssdev, - struct drm_display_mode *mode) -{ - struct dsi_data *dsi = to_dsi_data(dssdev); - struct dsi_clk_calc_ctx ctx; - int r; - - DSSDBG("dsi_check_timings\n"); - - mutex_lock(&dsi->lock); - r = __dsi_calc_config(dsi, mode, &ctx); - mutex_unlock(&dsi->lock); - - return r; -} - -static int dsi_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return omapdss_device_connect(dst->dss, dst, dst->next); -} - -static void dsi_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - omapdss_device_disconnect(dst, dst->next); -} - static const struct omap_dss_device_ops dsi_ops = { - .connect = dsi_connect, - .disconnect = dsi_disconnect, - .enable = dsi_enable_video_outputs, - .disable = dsi_disable_video_outputs, - - .check_timings = dsi_check_timings, - .set_timings = dsi_set_timings, - .dsi = { .update = dsi_update_all, .is_video_mode = dsi_is_video_mode, @@ -5392,6 +5354,83 @@ static const struct component_ops dsi_component_ops = { .unbind = dsi_unbind, };
+/* ----------------------------------------------------------------------------- + * DRM Bridge Operations + */ + +static int dsi_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct dsi_data *dsi = drm_bridge_to_dsi(bridge); + + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) + return -EINVAL; + + return drm_bridge_attach(bridge->encoder, dsi->output.next_bridge, + bridge, flags); +} + +static enum drm_mode_status +dsi_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct dsi_data *dsi = drm_bridge_to_dsi(bridge); + struct dsi_clk_calc_ctx ctx; + int r; + + mutex_lock(&dsi->lock); + r = __dsi_calc_config(dsi, mode, &ctx); + mutex_unlock(&dsi->lock); + + return r ? MODE_CLOCK_RANGE : MODE_OK; +} + +static void dsi_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) +{ + struct dsi_data *dsi = drm_bridge_to_dsi(bridge); + + dsi_set_config(&dsi->output, adjusted_mode); +} + +static void dsi_bridge_enable(struct drm_bridge *bridge) +{ + struct dsi_data *dsi = drm_bridge_to_dsi(bridge); + + dsi_enable_video_outputs(&dsi->output); +} + +static void dsi_bridge_disable(struct drm_bridge *bridge) +{ + struct dsi_data *dsi = drm_bridge_to_dsi(bridge); + + dsi_disable_video_outputs(&dsi->output); +} + +static const struct drm_bridge_funcs dsi_bridge_funcs = { + .attach = dsi_bridge_attach, + .mode_valid = dsi_bridge_mode_valid, + .mode_set = dsi_bridge_mode_set, + .enable = dsi_bridge_enable, + .disable = dsi_bridge_disable, +}; + +static void dsi_bridge_init(struct dsi_data *dsi) +{ + dsi->bridge.funcs = &dsi_bridge_funcs; + dsi->bridge.of_node = dsi->host.dev->of_node; + dsi->bridge.type = DRM_MODE_CONNECTOR_DSI; + + drm_bridge_add(&dsi->bridge); +} + +static void dsi_bridge_cleanup(struct dsi_data *dsi) +{ + drm_bridge_remove(&dsi->bridge); +} + /* ----------------------------------------------------------------------------- * Probe & Remove, Suspend & Resume */ @@ -5401,6 +5440,8 @@ static int dsi_init_output(struct dsi_data *dsi) struct omap_dss_device *out = &dsi->output; int r;
+ dsi_bridge_init(dsi); + out->dev = dsi->dev; out->id = dsi->module_id == 0 ? OMAP_DSS_OUTPUT_DSI1 : OMAP_DSS_OUTPUT_DSI2; @@ -5415,9 +5456,11 @@ static int dsi_init_output(struct dsi_data *dsi) | DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE;
- r = omapdss_device_init_output(out, NULL); - if (r < 0) + r = omapdss_device_init_output(out, &dsi->bridge); + if (r < 0) { + dsi_bridge_cleanup(dsi); return r; + }
omapdss_device_register(out);
@@ -5430,6 +5473,7 @@ static void dsi_uninit_output(struct dsi_data *dsi)
omapdss_device_unregister(out); omapdss_device_cleanup_output(out); + dsi_bridge_cleanup(dsi); }
static int dsi_probe_of(struct dsi_data *dsi)