diff options
author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2015-08-02 14:15:23 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-02-19 09:04:52 -0200 |
commit | dba4a18073c365a1f9f7529e22a3e1394ce798f2 (patch) | |
tree | 5eaf1b0dc095a74e4ce7b9f76a26712bfbc2361e /drivers/media/platform/vsp1/vsp1_video.c | |
parent | [media] v4l: vsp1: Decouple pipeline end of frame processing from vsp1_video (diff) | |
download | linux-dev-dba4a18073c365a1f9f7529e22a3e1394ce798f2.tar.xz linux-dev-dba4a18073c365a1f9f7529e22a3e1394ce798f2.zip |
[media] v4l: vsp1: Split pipeline management code from vsp1_video.c
The code will be used to control the vsp1 driver from the DU driver
without using video nodes.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_video.c')
-rw-r--r-- | drivers/media/platform/vsp1/vsp1_video.c | 225 |
1 files changed, 4 insertions, 221 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index 8f8ff443c8fb..6b9f115746b2 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -14,10 +14,10 @@ #include <linux/list.h> #include <linux/module.h> #include <linux/mutex.h> -#include <linux/sched.h> #include <linux/slab.h> #include <linux/v4l2-mediabus.h> #include <linux/videodev2.h> +#include <linux/wait.h> #include <media/media-entity.h> #include <media/v4l2-dev.h> @@ -30,6 +30,7 @@ #include "vsp1.h" #include "vsp1_bru.h" #include "vsp1_entity.h" +#include "vsp1_pipe.h" #include "vsp1_rwpf.h" #include "vsp1_uds.h" #include "vsp1_video.h" @@ -390,26 +391,6 @@ out: return rval; } -static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe) -{ - if (pipe->bru) { - struct vsp1_bru *bru = to_bru(&pipe->bru->subdev); - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i) - bru->inputs[i].rpf = NULL; - } - - INIT_LIST_HEAD(&pipe->entities); - pipe->state = VSP1_PIPELINE_STOPPED; - pipe->buffers_ready = 0; - pipe->num_inputs = 0; - pipe->output = NULL; - pipe->bru = NULL; - pipe->lif = NULL; - pipe->uds = NULL; -} - static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe, struct vsp1_video *video) { @@ -480,7 +461,7 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe, return 0; error: - __vsp1_pipeline_cleanup(pipe); + vsp1_pipeline_reset(pipe); return ret; } @@ -512,69 +493,11 @@ static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe) /* If we're the last user clean up the pipeline. */ if (--pipe->use_count == 0) - __vsp1_pipeline_cleanup(pipe); + vsp1_pipeline_reset(pipe); mutex_unlock(&pipe->lock); } -static void vsp1_pipeline_run(struct vsp1_pipeline *pipe) -{ - struct vsp1_device *vsp1 = pipe->output->entity.vsp1; - - vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD); - pipe->state = VSP1_PIPELINE_RUNNING; - pipe->buffers_ready = 0; -} - -static bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe) -{ - unsigned long flags; - bool stopped; - - spin_lock_irqsave(&pipe->irqlock, flags); - stopped = pipe->state == VSP1_PIPELINE_STOPPED; - spin_unlock_irqrestore(&pipe->irqlock, flags); - - return stopped; -} - -static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe) -{ - struct vsp1_entity *entity; - unsigned long flags; - int ret; - - spin_lock_irqsave(&pipe->irqlock, flags); - if (pipe->state == VSP1_PIPELINE_RUNNING) - pipe->state = VSP1_PIPELINE_STOPPING; - spin_unlock_irqrestore(&pipe->irqlock, flags); - - ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe), - msecs_to_jiffies(500)); - ret = ret == 0 ? -ETIMEDOUT : 0; - - list_for_each_entry(entity, &pipe->entities, list_pipe) { - if (entity->route && entity->route->reg) - vsp1_write(entity->vsp1, entity->route->reg, - VI6_DPR_NODE_UNUSED); - - v4l2_subdev_call(&entity->subdev, video, s_stream, 0); - } - - return ret; -} - -static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe) -{ - unsigned int mask; - - mask = ((1 << pipe->num_inputs) - 1) << 1; - if (!pipe->lif) - mask |= 1 << 0; - - return pipe->buffers_ready == mask; -} - /* * vsp1_video_complete_buffer - Complete the current buffer * @video: the video node @@ -663,146 +586,6 @@ static void vsp1_video_pipeline_frame_end(struct vsp1_pipeline *pipe) vsp1_video_frame_end(pipe, pipe->output); } -void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe) -{ - enum vsp1_pipeline_state state; - unsigned long flags; - - if (pipe == NULL) - return; - - /* Signal frame end to the pipeline handler. */ - pipe->frame_end(pipe); - - spin_lock_irqsave(&pipe->irqlock, flags); - - state = pipe->state; - pipe->state = VSP1_PIPELINE_STOPPED; - - /* If a stop has been requested, mark the pipeline as stopped and - * return. - */ - if (state == VSP1_PIPELINE_STOPPING) { - wake_up(&pipe->wq); - goto done; - } - - /* Restart the pipeline if ready. */ - if (vsp1_pipeline_ready(pipe)) - vsp1_pipeline_run(pipe); - -done: - spin_unlock_irqrestore(&pipe->irqlock, flags); -} - -/* - * Propagate the alpha value through the pipeline. - * - * As the UDS has restricted scaling capabilities when the alpha component needs - * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha - * value. The UDS then outputs a fixed alpha value which needs to be programmed - * from the input RPF alpha. - */ -void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe, - struct vsp1_entity *input, - unsigned int alpha) -{ - struct vsp1_entity *entity; - struct media_pad *pad; - - pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]); - - while (pad) { - if (!is_media_entity_v4l2_subdev(pad->entity)) - break; - - entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity)); - - /* The BRU background color has a fixed alpha value set to 255, - * the output alpha value is thus always equal to 255. - */ - if (entity->type == VSP1_ENTITY_BRU) - alpha = 255; - - if (entity->type == VSP1_ENTITY_UDS) { - struct vsp1_uds *uds = to_uds(&entity->subdev); - - vsp1_uds_set_alpha(uds, alpha); - break; - } - - pad = &entity->pads[entity->source_pad]; - pad = media_entity_remote_pad(pad); - } -} - -void vsp1_pipelines_suspend(struct vsp1_device *vsp1) -{ - unsigned long flags; - unsigned int i; - int ret; - - /* To avoid increasing the system suspend time needlessly, loop over the - * pipelines twice, first to set them all to the stopping state, and then - * to wait for the stop to complete. - */ - for (i = 0; i < vsp1->pdata.wpf_count; ++i) { - struct vsp1_rwpf *wpf = vsp1->wpf[i]; - struct vsp1_pipeline *pipe; - - if (wpf == NULL) - continue; - - pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity); - if (pipe == NULL) - continue; - - spin_lock_irqsave(&pipe->irqlock, flags); - if (pipe->state == VSP1_PIPELINE_RUNNING) - pipe->state = VSP1_PIPELINE_STOPPING; - spin_unlock_irqrestore(&pipe->irqlock, flags); - } - - for (i = 0; i < vsp1->pdata.wpf_count; ++i) { - struct vsp1_rwpf *wpf = vsp1->wpf[i]; - struct vsp1_pipeline *pipe; - - if (wpf == NULL) - continue; - - pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity); - if (pipe == NULL) - continue; - - ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe), - msecs_to_jiffies(500)); - if (ret == 0) - dev_warn(vsp1->dev, "pipeline %u stop timeout\n", - wpf->entity.index); - } -} - -void vsp1_pipelines_resume(struct vsp1_device *vsp1) -{ - unsigned int i; - - /* Resume pipeline all running pipelines. */ - for (i = 0; i < vsp1->pdata.wpf_count; ++i) { - struct vsp1_rwpf *wpf = vsp1->wpf[i]; - struct vsp1_pipeline *pipe; - - if (wpf == NULL) - continue; - - pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity); - if (pipe == NULL) - continue; - - if (vsp1_pipeline_ready(pipe)) - vsp1_pipeline_run(pipe); - } -} - /* ----------------------------------------------------------------------------- * videobuf2 Queue Operations */ |