Introduce a common subdrv register/unregister interfaces, help external driver to hook the drm open/close event.
Signed-off-by: Yakir Yang ykk@rock-chips.com --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 49 +++++++++++++++++++++++++++++ drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 15 +++++++++ 2 files changed, 64 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 896da09..4e0feb2 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -36,6 +36,8 @@ #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0
+static LIST_HEAD(rockchip_drm_subdrv_list); + /* * Attach a (component) device to the shared drm dma mapping from master drm * device. This is used by the VOPs to map GEM buffers to a common DMA @@ -251,6 +253,51 @@ static int rockchip_drm_unload(struct drm_device *drm_dev) return 0; }
+int rockchip_register_subdrv(struct drm_rockchip_subdrv *subdrv) +{ + if (!subdrv) + return -EINVAL; + + list_add_tail(&subdrv->list, &rockchip_drm_subdrv_list); + + return 0; +} +EXPORT_SYMBOL_GPL(rockchip_register_subdrv); + +int rockchip_unregister_subdrv(struct drm_rockchip_subdrv *subdrv) +{ + if (!subdrv) + return -EINVAL; + + list_del(&subdrv->list); + + return 0; +} +EXPORT_SYMBOL_GPL(rockchip_unregister_subdrv); + +static int rockchip_drm_open(struct drm_device *dev, struct drm_file *file) +{ + struct drm_rockchip_subdrv *subdrv; + int ret = 0; + + list_for_each_entry(subdrv, &rockchip_drm_subdrv_list, list) { + ret = subdrv->open(dev, subdrv->dev, file); + if (ret) + return ret; + } + + return 0; +} + +static void rockchip_drm_preclose(struct drm_device *dev, + struct drm_file *file) +{ + struct drm_rockchip_subdrv *subdrv; + + list_for_each_entry(subdrv, &rockchip_drm_subdrv_list, list) + subdrv->close(dev, subdrv->dev, file); +} + void rockchip_drm_lastclose(struct drm_device *dev) { struct rockchip_drm_private *priv = dev->dev_private; @@ -281,6 +328,8 @@ static struct drm_driver rockchip_drm_driver = { DRIVER_PRIME | DRIVER_ATOMIC, .load = rockchip_drm_load, .unload = rockchip_drm_unload, + .open = rockchip_drm_open, + .preclose = rockchip_drm_preclose, .lastclose = rockchip_drm_lastclose, .get_vblank_counter = drm_vblank_no_hw_counter, .enable_vblank = rockchip_drm_crtc_enable_vblank, diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h index 3529f69..5ea5fcb 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h @@ -42,6 +42,17 @@ struct rockchip_crtc_funcs { void (*wait_for_update)(struct drm_crtc *crtc); };
+struct drm_rockchip_subdrv { + struct list_head list; + struct device *dev; + struct drm_device *drm_dev; + + int (*open)(struct drm_device *drm_dev, struct device *dev, + struct drm_file *file); + void (*close)(struct drm_device *drm_dev, struct device *dev, + struct drm_file *file); +}; + struct rockchip_atomic_commit { struct work_struct work; struct drm_atomic_state *state; @@ -73,4 +84,8 @@ int rockchip_drm_dma_attach_device(struct drm_device *drm_dev, struct device *dev); void rockchip_drm_dma_detach_device(struct drm_device *drm_dev, struct device *dev); + +int rockchip_register_subdrv(struct drm_rockchip_subdrv *subdrv); +int rockchip_unregister_subdrv(struct drm_rockchip_subdrv *subdrv); + #endif /* _ROCKCHIP_DRM_DRV_H_ */