[deliverable/linux.git] / drivers / media / platform / vsp1 / vsp1_pipe.c

/*
 * vsp1_pipe.c  --  R-Car VSP1 Pipeline
 *
 * Copyright (C) 2013-2015 Renesas Electronics Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/list.h>
#include <linux/sched.h>
#include <linux/wait.h>

#include <media/media-entity.h>
#include <media/v4l2-subdev.h>

#include "vsp1.h"
#include "vsp1_bru.h"
#include "vsp1_entity.h"
#include "vsp1_pipe.h"
#include "vsp1_rwpf.h"
#include "vsp1_uds.h"

/* -----------------------------------------------------------------------------
 * Helper Functions
 */

static const struct vsp1_format_info vsp1_video_formats[] = {
	{ V4L2_PIX_FMT_RGB332, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_RGB_332, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 8, 0, 0 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_ARGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_ARGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS,
	  1, { 16, 0, 0 }, false, false, 1, 1, true },
	{ V4L2_PIX_FMT_XRGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_XRGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS,
	  1, { 16, 0, 0 }, false, false, 1, 1, true },
	{ V4L2_PIX_FMT_ARGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_ARGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS,
	  1, { 16, 0, 0 }, false, false, 1, 1, true },
	{ V4L2_PIX_FMT_XRGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS,
	  1, { 16, 0, 0 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_RGB_565, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS,
	  1, { 16, 0, 0 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_BGR24, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_BGR_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 24, 0, 0 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_RGB24, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_RGB_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 24, 0, 0 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_ABGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,
	  1, { 32, 0, 0 }, false, false, 1, 1, true },
	{ V4L2_PIX_FMT_XBGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,
	  1, { 32, 0, 0 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_ARGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 32, 0, 0 }, false, false, 1, 1, true },
	{ V4L2_PIX_FMT_XRGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 32, 0, 0 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_UYVY, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 16, 0, 0 }, false, false, 2, 1, false },
	{ V4L2_PIX_FMT_VYUY, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 16, 0, 0 }, false, true, 2, 1, false },
	{ V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 16, 0, 0 }, true, false, 2, 1, false },
	{ V4L2_PIX_FMT_YVYU, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  1, { 16, 0, 0 }, true, true, 2, 1, false },
	{ V4L2_PIX_FMT_NV12M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  2, { 8, 16, 0 }, false, false, 2, 2, false },
	{ V4L2_PIX_FMT_NV21M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  2, { 8, 16, 0 }, false, true, 2, 2, false },
	{ V4L2_PIX_FMT_NV16M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  2, { 8, 16, 0 }, false, false, 2, 1, false },
	{ V4L2_PIX_FMT_NV61M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  2, { 8, 16, 0 }, false, true, 2, 1, false },
	{ V4L2_PIX_FMT_YUV420M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  3, { 8, 8, 8 }, false, false, 2, 2, false },
	{ V4L2_PIX_FMT_YVU420M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  3, { 8, 8, 8 }, false, true, 2, 2, false },
	{ V4L2_PIX_FMT_YUV422M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  3, { 8, 8, 8 }, false, false, 2, 1, false },
	{ V4L2_PIX_FMT_YVU422M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  3, { 8, 8, 8 }, false, true, 2, 1, false },
	{ V4L2_PIX_FMT_YUV444M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  3, { 8, 8, 8 }, false, false, 1, 1, false },
	{ V4L2_PIX_FMT_YVU444M, MEDIA_BUS_FMT_AYUV8_1X32,
	  VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
	  3, { 8, 8, 8 }, false, true, 1, 1, false },
};

/*
 * vsp1_get_format_info - Retrieve format information for a 4CC
 * @fourcc: the format 4CC
 *
 * Return a pointer to the format information structure corresponding to the
 * given V4L2 format 4CC, or NULL if no corresponding format can be found.
 */
const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(vsp1_video_formats); ++i) {
		const struct vsp1_format_info *info = &vsp1_video_formats[i];

		if (info->fourcc == fourcc)
			return info;
	}

	return NULL;
}

/* -----------------------------------------------------------------------------
 * Pipeline Management
 */

void vsp1_pipeline_reset(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;
}

void vsp1_pipeline_init(struct vsp1_pipeline *pipe)
{
	mutex_init(&pipe->lock);
	spin_lock_init(&pipe->irqlock);
	init_waitqueue_head(&pipe->wq);

	INIT_LIST_HEAD(&pipe->entities);
	pipe->state = VSP1_PIPELINE_STOPPED;
}

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;
}

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;
}

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;
}

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;
}

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);
	}
}
Commit	Line	Data
dba4a180 LP	1	/*
	2	* vsp1_pipe.c -- R-Car VSP1 Pipeline
	3	*
	4	* Copyright (C) 2013-2015 Renesas Electronics Corporation
	5	*
	6	* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*/
	13
	14	#include <linux/list.h>
	15	#include <linux/sched.h>
	16	#include <linux/wait.h>
	17
	18	#include <media/media-entity.h>
	19	#include <media/v4l2-subdev.h>
	20
	21	#include "vsp1.h"
	22	#include "vsp1_bru.h"
	23	#include "vsp1_entity.h"
	24	#include "vsp1_pipe.h"
	25	#include "vsp1_rwpf.h"
	26	#include "vsp1_uds.h"
	27
c618b185 LP	28	/* -----------------------------------------------------------------------------
	29	* Helper Functions
	30	*/
	31
	32	static const struct vsp1_format_info vsp1_video_formats[] = {
	33	{ V4L2_PIX_FMT_RGB332, MEDIA_BUS_FMT_ARGB8888_1X32,
	34	VI6_FMT_RGB_332, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	35	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	36	1, { 8, 0, 0 }, false, false, 1, 1, false },
	37	{ V4L2_PIX_FMT_ARGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
	38	VI6_FMT_ARGB_4444, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	39	VI6_RPF_DSWAP_P_WDS,
	40	1, { 16, 0, 0 }, false, false, 1, 1, true },
	41	{ V4L2_PIX_FMT_XRGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
	42	VI6_FMT_XRGB_4444, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	43	VI6_RPF_DSWAP_P_WDS,
	44	1, { 16, 0, 0 }, false, false, 1, 1, true },
	45	{ V4L2_PIX_FMT_ARGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
	46	VI6_FMT_ARGB_1555, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	47	VI6_RPF_DSWAP_P_WDS,
	48	1, { 16, 0, 0 }, false, false, 1, 1, true },
	49	{ V4L2_PIX_FMT_XRGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
	50	VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	51	VI6_RPF_DSWAP_P_WDS,
	52	1, { 16, 0, 0 }, false, false, 1, 1, false },
	53	{ V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_ARGB8888_1X32,
	54	VI6_FMT_RGB_565, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	55	VI6_RPF_DSWAP_P_WDS,
	56	1, { 16, 0, 0 }, false, false, 1, 1, false },
	57	{ V4L2_PIX_FMT_BGR24, MEDIA_BUS_FMT_ARGB8888_1X32,
	58	VI6_FMT_BGR_888, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	59	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	60	1, { 24, 0, 0 }, false, false, 1, 1, false },
	61	{ V4L2_PIX_FMT_RGB24, MEDIA_BUS_FMT_ARGB8888_1X32,
	62	VI6_FMT_RGB_888, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	63	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	64	1, { 24, 0, 0 }, false, false, 1, 1, false },
	65	{ V4L2_PIX_FMT_ABGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
	66	VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS,
	67	1, { 32, 0, 0 }, false, false, 1, 1, true },
	68	{ V4L2_PIX_FMT_XBGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
	69	VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS,
	70	1, { 32, 0, 0 }, false, false, 1, 1, false },
	71	{ V4L2_PIX_FMT_ARGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
	72	VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	73	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	74	1, { 32, 0, 0 }, false, false, 1, 1, true },
	75	{ V4L2_PIX_FMT_XRGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
	76	VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	77	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	78	1, { 32, 0, 0 }, false, false, 1, 1, false },
	79	{ V4L2_PIX_FMT_UYVY, MEDIA_BUS_FMT_AYUV8_1X32,
	80	VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	81	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	82	1, { 16, 0, 0 }, false, false, 2, 1, false },
	83	{ V4L2_PIX_FMT_VYUY, MEDIA_BUS_FMT_AYUV8_1X32,
	84	VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	85	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	86	1, { 16, 0, 0 }, false, true, 2, 1, false },
	87	{ V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_AYUV8_1X32,
	88	VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
	89	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
	90	1, { 16, 0, 0 }, true, false, 2, 1, false },
	91	{ V4L2_PIX_FMT_YVYU, MEDIA_BUS_FMT_AYUV8_1X32,
92	VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
93	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
94	1, { 16, 0, 0 }, true, true, 2, 1, false },
95	{ V4L2_PIX_FMT_NV12M, MEDIA_BUS_FMT_AYUV8_1X32,
96	VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
97	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
98	2, { 8, 16, 0 }, false, false, 2, 2, false },
99	{ V4L2_PIX_FMT_NV21M, MEDIA_BUS_FMT_AYUV8_1X32,
100	VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
101	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
102	2, { 8, 16, 0 }, false, true, 2, 2, false },
103	{ V4L2_PIX_FMT_NV16M, MEDIA_BUS_FMT_AYUV8_1X32,
104	VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
105	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
106	2, { 8, 16, 0 }, false, false, 2, 1, false },
107	{ V4L2_PIX_FMT_NV61M, MEDIA_BUS_FMT_AYUV8_1X32,
108	VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
109	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
110	2, { 8, 16, 0 }, false, true, 2, 1, false },
111	{ V4L2_PIX_FMT_YUV420M, MEDIA_BUS_FMT_AYUV8_1X32,
112	VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
113	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
114	3, { 8, 8, 8 }, false, false, 2, 2, false },
115	{ V4L2_PIX_FMT_YVU420M, MEDIA_BUS_FMT_AYUV8_1X32,
116	VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
117	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
118	3, { 8, 8, 8 }, false, true, 2, 2, false },
119	{ V4L2_PIX_FMT_YUV422M, MEDIA_BUS_FMT_AYUV8_1X32,
120	VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
121	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
122	3, { 8, 8, 8 }, false, false, 2, 1, false },
123	{ V4L2_PIX_FMT_YVU422M, MEDIA_BUS_FMT_AYUV8_1X32,
124	VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
125	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
126	3, { 8, 8, 8 }, false, true, 2, 1, false },
127	{ V4L2_PIX_FMT_YUV444M, MEDIA_BUS_FMT_AYUV8_1X32,
128	VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
129	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
130	3, { 8, 8, 8 }, false, false, 1, 1, false },
131	{ V4L2_PIX_FMT_YVU444M, MEDIA_BUS_FMT_AYUV8_1X32,
132	VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS \| VI6_RPF_DSWAP_P_LWS \|
133	VI6_RPF_DSWAP_P_WDS \| VI6_RPF_DSWAP_P_BTS,
134	3, { 8, 8, 8 }, false, true, 1, 1, false },
135	};
136
137	/*
138	* vsp1_get_format_info - Retrieve format information for a 4CC
139	* @fourcc: the format 4CC
140	*
141	* Return a pointer to the format information structure corresponding to the
142	* given V4L2 format 4CC, or NULL if no corresponding format can be found.
143	*/
144	const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc)
145	{
146	unsigned int i;
147
148	for (i = 0; i < ARRAY_SIZE(vsp1_video_formats); ++i) {
149	const struct vsp1_format_info *info = &vsp1_video_formats[i];
150
151	if (info->fourcc == fourcc)
152	return info;
153	}
154
155	return NULL;
156	}
157
dba4a180 LP	158	/* -----------------------------------------------------------------------------
	159	* Pipeline Management
	160	*/
	161
	162	void vsp1_pipeline_reset(struct vsp1_pipeline *pipe)
	163	{
	164	if (pipe->bru) {
	165	struct vsp1_bru *bru = to_bru(&pipe->bru->subdev);
	166	unsigned int i;
	167
	168	for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i)
	169	bru->inputs[i].rpf = NULL;
	170	}
	171
	172	INIT_LIST_HEAD(&pipe->entities);
	173	pipe->state = VSP1_PIPELINE_STOPPED;
	174	pipe->buffers_ready = 0;
	175	pipe->num_inputs = 0;
	176	pipe->output = NULL;
	177	pipe->bru = NULL;
	178	pipe->lif = NULL;
	179	pipe->uds = NULL;
	180	}
	181
f294c2f7 LP	182	void vsp1_pipeline_init(struct vsp1_pipeline *pipe)
	183	{
	184	mutex_init(&pipe->lock);
	185	spin_lock_init(&pipe->irqlock);
	186	init_waitqueue_head(&pipe->wq);
	187
	188	INIT_LIST_HEAD(&pipe->entities);
	189	pipe->state = VSP1_PIPELINE_STOPPED;
	190	}
	191
dba4a180 LP	192	void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
	193	{
	194	struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
	195
	196	vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
	197	pipe->state = VSP1_PIPELINE_RUNNING;
	198	pipe->buffers_ready = 0;
	199	}
	200
	201	bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe)
	202	{
	203	unsigned long flags;
	204	bool stopped;
	205
	206	spin_lock_irqsave(&pipe->irqlock, flags);
	207	stopped = pipe->state == VSP1_PIPELINE_STOPPED;
	208	spin_unlock_irqrestore(&pipe->irqlock, flags);
	209
	210	return stopped;
	211	}
	212
	213	int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
	214	{
	215	struct vsp1_entity *entity;
	216	unsigned long flags;
	217	int ret;
	218
	219	spin_lock_irqsave(&pipe->irqlock, flags);
	220	if (pipe->state == VSP1_PIPELINE_RUNNING)
	221	pipe->state = VSP1_PIPELINE_STOPPING;
	222	spin_unlock_irqrestore(&pipe->irqlock, flags);
	223
	224	ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
	225	msecs_to_jiffies(500));
	226	ret = ret == 0 ? -ETIMEDOUT : 0;
	227
	228	list_for_each_entry(entity, &pipe->entities, list_pipe) {
	229	if (entity->route && entity->route->reg)
	230	vsp1_write(entity->vsp1, entity->route->reg,
	231	VI6_DPR_NODE_UNUSED);
	232
	233	v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
	234	}
	235
	236	return ret;
	237	}
	238
	239	bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
	240	{
	241	unsigned int mask;
	242
	243	mask = ((1 << pipe->num_inputs) - 1) << 1;
	244	if (!pipe->lif)
	245	mask \|= 1 << 0;
	246
	247	return pipe->buffers_ready == mask;
	248	}
	249
	250	void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
	251	{
	252	enum vsp1_pipeline_state state;
	253	unsigned long flags;
	254
	255	if (pipe == NULL)
256	return;
257
258	/* Signal frame end to the pipeline handler. */
259	pipe->frame_end(pipe);
260
261	spin_lock_irqsave(&pipe->irqlock, flags);
262
263	state = pipe->state;
264	pipe->state = VSP1_PIPELINE_STOPPED;
265
266	/* If a stop has been requested, mark the pipeline as stopped and
267	* return.
268	*/
269	if (state == VSP1_PIPELINE_STOPPING) {
270	wake_up(&pipe->wq);
271	goto done;
272	}
273
274	/* Restart the pipeline if ready. */
275	if (vsp1_pipeline_ready(pipe))
276	vsp1_pipeline_run(pipe);
277
278	done:
279	spin_unlock_irqrestore(&pipe->irqlock, flags);
280	}
281
282	/*
283	* Propagate the alpha value through the pipeline.
284	*
285	* As the UDS has restricted scaling capabilities when the alpha component needs
286	* to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
287	* value. The UDS then outputs a fixed alpha value which needs to be programmed
288	* from the input RPF alpha.
289	*/
290	void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
291	struct vsp1_entity *input,
292	unsigned int alpha)
293	{
294	struct vsp1_entity *entity;
295	struct media_pad *pad;
296
297	pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
298
299	while (pad) {
300	if (!is_media_entity_v4l2_subdev(pad->entity))
301	break;
302
303	entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
304
305	/* The BRU background color has a fixed alpha value set to 255,
306	* the output alpha value is thus always equal to 255.
307	*/
308	if (entity->type == VSP1_ENTITY_BRU)
309	alpha = 255;
310
311	if (entity->type == VSP1_ENTITY_UDS) {
312	struct vsp1_uds *uds = to_uds(&entity->subdev);
313
314	vsp1_uds_set_alpha(uds, alpha);
315	break;
316	}
317
318	pad = &entity->pads[entity->source_pad];
319	pad = media_entity_remote_pad(pad);
320	}
321	}
322
323	void vsp1_pipelines_suspend(struct vsp1_device *vsp1)
324	{
325	unsigned long flags;
326	unsigned int i;
327	int ret;
328
329	/* To avoid increasing the system suspend time needlessly, loop over the
330	* pipelines twice, first to set them all to the stopping state, and
331	* then to wait for the stop to complete.
332	*/
333	for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
334	struct vsp1_rwpf *wpf = vsp1->wpf[i];
335	struct vsp1_pipeline *pipe;
336
337	if (wpf == NULL)
338	continue;
339
340	pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
341	if (pipe == NULL)
342	continue;
343
344	spin_lock_irqsave(&pipe->irqlock, flags);
345	if (pipe->state == VSP1_PIPELINE_RUNNING)
346	pipe->state = VSP1_PIPELINE_STOPPING;
347	spin_unlock_irqrestore(&pipe->irqlock, flags);
348	}
349
350	for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
351	struct vsp1_rwpf *wpf = vsp1->wpf[i];
352	struct vsp1_pipeline *pipe;
353
354	if (wpf == NULL)
355	continue;
356
357	pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
358	if (pipe == NULL)
359	continue;
360
361	ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
362	msecs_to_jiffies(500));
363	if (ret == 0)
364	dev_warn(vsp1->dev, "pipeline %u stop timeout\n",
365	wpf->entity.index);
366	}
367	}
368
369	void vsp1_pipelines_resume(struct vsp1_device *vsp1)
370	{
371	unsigned int i;
372
373	/* Resume pipeline all running pipelines. */
374	for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
375	struct vsp1_rwpf *wpf = vsp1->wpf[i];
376	struct vsp1_pipeline *pipe;
377
378	if (wpf == NULL)
379	continue;
380
381	pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
382	if (pipe == NULL)
383	continue;
384
385	if (vsp1_pipeline_ready(pipe))
386	vsp1_pipeline_run(pipe);
387	}
388	}