diff options
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_drm.c')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_drm.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platform/vsp1/vsp1_drm.c index 9d235e830f5a..9377aafa8996 100644 --- a/drivers/media/platform/vsp1/vsp1_drm.c +++ b/drivers/media/platform/vsp1/vsp1_drm.c @@ -12,6 +12,7 @@ */ #include <linux/device.h> +#include <linux/dma-mapping.h> #include <linux/slab.h> #include <media/media-entity.h> @@ -36,6 +37,14 @@ void vsp1_drm_display_start(struct vsp1_device *vsp1) vsp1_dlm_irq_display_start(vsp1->drm->pipe.output->dlm); } +static void vsp1_du_pipeline_frame_end(struct vsp1_pipeline *pipe) +{ + struct vsp1_drm *drm = to_vsp1_drm(pipe); + + if (drm->du_complete) + drm->du_complete(drm->du_private); +} + /* ----------------------------------------------------------------------------- * DU Driver API */ @@ -95,6 +104,7 @@ int vsp1_du_setup_lif(struct device *dev, const struct vsp1_du_lif_config *cfg) } pipe->num_inputs = 0; + vsp1->drm->du_complete = NULL; vsp1_dlm_reset(pipe->output->dlm); vsp1_device_put(vsp1); @@ -199,6 +209,13 @@ int vsp1_du_setup_lif(struct device *dev, const struct vsp1_du_lif_config *cfg) if (ret < 0) return ret; + /* + * Register a callback to allow us to notify the DRM driver of frame + * completion events. + */ + vsp1->drm->du_complete = cfg->callback; + vsp1->drm->du_private = cfg->callback_data; + ret = media_pipeline_start(&pipe->output->entity.subdev.entity, &pipe->pipe); if (ret < 0) { @@ -524,6 +541,29 @@ void vsp1_du_atomic_flush(struct device *dev) } EXPORT_SYMBOL_GPL(vsp1_du_atomic_flush); +int vsp1_du_map_sg(struct device *dev, struct sg_table *sgt) +{ + struct vsp1_device *vsp1 = dev_get_drvdata(dev); + + /* + * As all the buffers allocated by the DU driver are coherent, we can + * skip cache sync. This will need to be revisited when support for + * non-coherent buffers will be added to the DU driver. + */ + return dma_map_sg_attrs(vsp1->bus_master, sgt->sgl, sgt->nents, + DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); +} +EXPORT_SYMBOL_GPL(vsp1_du_map_sg); + +void vsp1_du_unmap_sg(struct device *dev, struct sg_table *sgt) +{ + struct vsp1_device *vsp1 = dev_get_drvdata(dev); + + dma_unmap_sg_attrs(vsp1->bus_master, sgt->sgl, sgt->nents, + DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); +} +EXPORT_SYMBOL_GPL(vsp1_du_unmap_sg); + /* ----------------------------------------------------------------------------- * Initialization */ @@ -603,6 +643,7 @@ int vsp1_drm_init(struct vsp1_device *vsp1) pipe->lif = &vsp1->lif->entity; pipe->output = vsp1->wpf[0]; pipe->output->pipe = pipe; + pipe->frame_end = vsp1_du_pipeline_frame_end; return 0; } |