Live sources represent a hardware connection between a video stream source and a CRTC, going through a plane. The kernel API lets driver register live sources, and the userspace API lets applications enumerate them.
Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com --- drivers/gpu/drm/drm_crtc.c | 164 ++++++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_ioctl.c | 2 + include/drm/drm_crtc.h | 35 ++++++++++ include/uapi/drm/drm.h | 3 + include/uapi/drm/drm_mode.h | 16 +++++ 5 files changed, 220 insertions(+)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index b3989e23195e..1f71978b4f17 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1265,6 +1265,70 @@ void drm_plane_cleanup(struct drm_plane *plane) } EXPORT_SYMBOL(drm_plane_cleanup);
+int drm_live_source_init(struct drm_device *dev, struct drm_live_source *src, + const char *name, unsigned long possible_planes, + const uint32_t *formats, uint32_t format_count, + const struct drm_live_source_funcs *funcs) +{ + unsigned int i; + int ret; + + /* Multi-planar live sources are not supported for now. */ + for (i = 0; i < format_count; ++i) { + if (drm_format_num_planes(formats[i]) != 1) { + DRM_DEBUG_KMS("multiplanar live sources unsupported\n"); + return -EINVAL; + } + } + + drm_modeset_lock_all(dev); + + ret = drm_mode_object_get(dev, &src->base, DRM_MODE_OBJECT_LIVE_SOURCE); + if (ret) + goto out; + + src->dev = dev; + src->funcs = funcs; + if (name) + strlcpy(src->name, name, DRM_SOURCE_NAME_LEN); + src->possible_planes = possible_planes; + + src->format_types = kmalloc_array(format_count, + sizeof(*src->format_types), + GFP_KERNEL); + if (!src->format_types) { + DRM_DEBUG_KMS("out of memory when allocating source foramts\n"); + drm_mode_object_put(dev, &src->base); + ret = -ENOMEM; + goto out; + } + + memcpy(src->format_types, formats, + format_count * sizeof(*src->format_types)); + src->format_count = format_count; + + list_add_tail(&src->head, &dev->mode_config.live_source_list); + dev->mode_config.num_live_source++; + + out: + drm_modeset_unlock_all(dev); + + return ret; +} +EXPORT_SYMBOL(drm_live_source_init); + +void drm_live_source_cleanup(struct drm_live_source *src) +{ + struct drm_device *dev = src->dev; + + drm_modeset_lock_all(dev); + drm_mode_object_put(dev, &src->base); + list_del(&src->head); + dev->mode_config.num_live_source--; + drm_modeset_unlock_all(dev); +} +EXPORT_SYMBOL(drm_live_source_cleanup); + /** * drm_plane_index - find the index of a registered plane * @plane: plane to find index for @@ -2616,6 +2680,99 @@ int drm_mode_setplane(struct drm_device *dev, void *data, }
/** + * drm_mode_getsource_res - get live source info + * @dev: DRM device + * @data: ioctl data + * @file_priv: DRM file info + * + * Return a live source and set of IDs. + */ +int drm_mode_getsource_res(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_get_live_source_res *src_resp = data; + struct drm_mode_config *config; + struct drm_live_source *src; + uint32_t __user *src_ptr; + int copied = 0, ret = 0; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + drm_modeset_lock_all(dev); + config = &dev->mode_config; + + /* + * This ioctl is called twice, once to determine how much space is + * needed, and the 2nd time to fill it. + */ + if (config->num_live_source && + (src_resp->count_sources >= config->num_live_source)) { + src_ptr = (uint32_t __user *)(unsigned long)src_resp->source_id_ptr; + + list_for_each_entry(src, &config->live_source_list, head) { + if (put_user(src->base.id, src_ptr + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + src_resp->count_sources = config->num_live_source; + +out: + drm_modeset_unlock_all(dev); + return ret; +} + +/** + * drm_mode_getsource - get live source info + * @dev: DRM device + * @data: ioctl data + * @file_priv: DRM file info + * + * Return live source info, including formats supported, ... + */ +int drm_mode_getsource(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_get_live_source *src_resp = data; + struct drm_mode_object *obj; + struct drm_live_source *src; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + obj = drm_mode_object_find(dev, src_resp->source_id, + DRM_MODE_OBJECT_LIVE_SOURCE); + if (!obj) + return -ENOENT; + src = obj_to_live_source(obj); + + src_resp->source_id = src->base.id; + strlcpy(src_resp->name, src->name, DRM_SOURCE_NAME_LEN); + src_resp->possible_planes = src->possible_planes; + + /* + * This ioctl is called twice, once to determine how much space is + * needed, and the 2nd time to fill it. + */ + if (src->format_count && + (src_resp->count_format_types >= src->format_count)) { + uint32_t __user *format_ptr; + + format_ptr = (uint32_t __user *)(unsigned long)src_resp->format_type_ptr; + if (copy_to_user(format_ptr, src->format_types, + sizeof(uint32_t) * src->format_count)) { + return -EFAULT; + } + } + src_resp->count_format_types = src->format_count; + + return 0; +} + +/** * drm_mode_set_config_internal - helper to call ->set_config * @set: modeset config to set * @@ -5435,6 +5592,7 @@ void drm_mode_config_init(struct drm_device *dev) INIT_LIST_HEAD(&dev->mode_config.property_list); INIT_LIST_HEAD(&dev->mode_config.property_blob_list); INIT_LIST_HEAD(&dev->mode_config.plane_list); + INIT_LIST_HEAD(&dev->mode_config.live_source_list); idr_init(&dev->mode_config.crtc_idr); idr_init(&dev->mode_config.tile_idr);
@@ -5474,6 +5632,7 @@ void drm_mode_config_cleanup(struct drm_device *dev) struct drm_property *property, *pt; struct drm_property_blob *blob, *bt; struct drm_plane *plane, *plt; + struct drm_live_source *src, *psrc;
list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, head) { @@ -5513,6 +5672,11 @@ void drm_mode_config_cleanup(struct drm_device *dev) plane->funcs->destroy(plane); }
+ list_for_each_entry_safe(src, psrc, &dev->mode_config.live_source_list, + head) { + src->funcs->destroy(src); + } + list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { crtc->funcs->destroy(crtc); } diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 266dcd6cdf3b..e3b01a19f9ac 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -614,10 +614,12 @@ static const struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETSOURCERESOURCES, drm_mode_getsource_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETSOURCE, drm_mode_getsource, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 2e80ad1aea84..4d111d8a1782 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -53,6 +53,7 @@ struct fence; #define DRM_MODE_OBJECT_FB 0xfbfbfbfb #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee +#define DRM_MODE_OBJECT_LIVE_SOURCE 0xe1e1e1e1 #define DRM_MODE_OBJECT_ANY 0
struct drm_mode_object { @@ -246,6 +247,7 @@ struct drm_pending_vblank_event; struct drm_plane; struct drm_bridge; struct drm_atomic_state; +struct drm_live_source;
/** * struct drm_crtc_state - mutable CRTC state @@ -868,6 +870,25 @@ struct drm_plane { struct drm_plane_state *state; };
+struct drm_live_source_funcs { + void (*destroy)(struct drm_live_source *src); +}; + +struct drm_live_source { + struct drm_device *dev; + struct list_head head; + + struct drm_mode_object base; + + char name[DRM_SOURCE_NAME_LEN]; + + uint32_t possible_planes; + uint32_t *format_types; + uint32_t format_count; + + const struct drm_live_source_funcs *funcs; +}; + /** * struct drm_bridge_funcs - drm_bridge control functions * @attach: Called during drm_bridge_attach @@ -1086,6 +1107,8 @@ struct drm_mode_config { int num_overlay_plane; int num_total_plane; struct list_head plane_list; + int num_live_source; + struct list_head live_source_list;
int num_crtc; struct list_head crtc_list; @@ -1185,6 +1208,7 @@ struct drm_mode_config { #define obj_to_property(x) container_of(x, struct drm_property, base) #define obj_to_blob(x) container_of(x, struct drm_property_blob, base) #define obj_to_plane(x) container_of(x, struct drm_plane, base) +#define obj_to_live_source(x) container_of(x, struct drm_live_source, base)
struct drm_prop_enum_list { int type; @@ -1275,6 +1299,13 @@ extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
extern void drm_encoder_cleanup(struct drm_encoder *encoder);
+extern int drm_live_source_init(struct drm_device *dev, + struct drm_live_source *src, const char *name, + unsigned long possible_planes, + const uint32_t *formats, uint32_t format_count, + const struct drm_live_source_funcs *funcs); +extern void drm_live_source_cleanup(struct drm_live_source *src); + extern const char *drm_get_connector_status_name(enum drm_connector_status status); extern const char *drm_get_subpixel_order_name(enum subpixel_order order); extern const char *drm_get_dpms_name(int val); @@ -1390,6 +1421,8 @@ extern int drm_mode_getresources(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mode_getplane_res(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int drm_mode_getsource_res(struct drm_device *dev, void *data, + struct drm_file *file_priv); extern int drm_mode_getcrtc(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mode_getconnector(struct drm_device *dev, @@ -1401,6 +1434,8 @@ extern int drm_mode_getplane(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mode_setplane(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int drm_mode_getsource(struct drm_device *dev, + void *data, struct drm_file *file_priv); extern int drm_mode_cursor_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mode_cursor2_ioctl(struct drm_device *dev, diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index ff6ef62d084b..92621bd5194b 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -787,6 +787,9 @@ struct drm_prime_handle { #define DRM_IOCTL_MODE_CURSOR2 DRM_IOWR(0xBB, struct drm_mode_cursor2) #define DRM_IOCTL_MODE_ATOMIC DRM_IOWR(0xBC, struct drm_mode_atomic)
+#define DRM_IOCTL_MODE_GETSOURCERESOURCES DRM_IOWR(0xBD, struct drm_mode_get_live_source_res) +#define DRM_IOCTL_MODE_GETSOURCE DRM_IOWR(0xBE, struct drm_mode_get_live_source) + /** * Device specific ioctls should only be in their respective headers * The device specific ioctl range is from 0x40 to 0x9f. diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index dbeba949462a..e4d09f6f20eb 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -33,6 +33,7 @@ #define DRM_CONNECTOR_NAME_LEN 32 #define DRM_DISPLAY_MODE_LEN 32 #define DRM_PROP_NAME_LEN 32 +#define DRM_SOURCE_NAME_LEN 32
#define DRM_MODE_TYPE_BUILTIN (1<<0) #define DRM_MODE_TYPE_CLOCK_C ((1<<1) | DRM_MODE_TYPE_BUILTIN) @@ -179,6 +180,21 @@ struct drm_mode_get_plane_res { __u32 count_planes; };
+struct drm_mode_get_live_source { + __u32 source_id; + char name[DRM_SOURCE_NAME_LEN]; + + __u32 possible_planes; + + __u32 count_format_types; + __u64 format_type_ptr; +}; + +struct drm_mode_get_live_source_res { + __u64 source_id_ptr; + __u32 count_sources; +}; + #define DRM_MODE_ENCODER_NONE 0 #define DRM_MODE_ENCODER_DAC 1 #define DRM_MODE_ENCODER_TMDS 2