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linux/drivers/media/platform/vsp1/vsp1_pipe.c
Laurent Pinchart f2421521de [media] v4l: vsp1: Add HGO support 
The HGO is a Histogram Generator One-Dimension. It computes per-channel
histograms over a configurable region of the image with optional
subsampling.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-14 22:48:33 -03:00

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/*
* 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/delay.h>
#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_dl.h"
#include "vsp1_entity.h"
#include "vsp1_hgo.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, false },
{ 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_HSV24, MEDIA_BUS_FMT_AHSV8888_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_HSV32, MEDIA_BUS_FMT_AHSV8888_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
* @vsp1: the VSP1 device
* @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(struct vsp1_device *vsp1,
u32 fourcc)
{
unsigned int i;
/* Special case, the VYUY and HSV formats are supported on Gen2 only. */
if (vsp1->info->gen != 2) {
switch (fourcc) {
case V4L2_PIX_FMT_VYUY:
case V4L2_PIX_FMT_HSV24:
case V4L2_PIX_FMT_HSV32:
return NULL;
}
}
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)
{
unsigned int i;
if (pipe->bru) {
struct vsp1_bru *bru = to_bru(&pipe->bru->subdev);
for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i)
bru->inputs[i].rpf = NULL;
}
for (i = 0; i < ARRAY_SIZE(pipe->inputs); ++i) {
if (pipe->inputs[i]) {
pipe->inputs[i]->pipe = NULL;
pipe->inputs[i] = NULL;
}
}
if (pipe->output) {
pipe->output->pipe = NULL;
pipe->output = NULL;
}
if (pipe->hgo) {
struct vsp1_hgo *hgo = to_hgo(&pipe->hgo->subdev);
hgo->histo.pipe = NULL;
}
INIT_LIST_HEAD(&pipe->entities);
pipe->state = VSP1_PIPELINE_STOPPED;
pipe->buffers_ready = 0;
pipe->num_inputs = 0;
pipe->bru = NULL;
pipe->hgo = 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);
kref_init(&pipe->kref);
INIT_LIST_HEAD(&pipe->entities);
pipe->state = VSP1_PIPELINE_STOPPED;
}
/* Must be called with the pipe irqlock held. */
void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
{
struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
if (pipe->state == VSP1_PIPELINE_STOPPED) {
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_device *vsp1 = pipe->output->entity.vsp1;
struct vsp1_entity *entity;
unsigned long flags;
int ret;
if (pipe->lif) {
/*
* When using display lists in continuous frame mode the only
* way to stop the pipeline is to reset the hardware.
*/
ret = vsp1_reset_wpf(vsp1, pipe->output->entity.index);
if (ret == 0) {
spin_lock_irqsave(&pipe->irqlock, flags);
pipe->state = VSP1_PIPELINE_STOPPED;
spin_unlock_irqrestore(&pipe->irqlock, flags);
}
} else {
/* Otherwise just request a stop and wait. */
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(vsp1, entity->route->reg,
VI6_DPR_NODE_UNUSED);
}
if (pipe->hgo)
vsp1_write(vsp1, VI6_DPR_HGO_SMPPT,
(7 << VI6_DPR_SMPPT_TGW_SHIFT) |
(VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
v4l2_subdev_call(&pipe->output->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)
{
if (pipe == NULL)
return;
vsp1_dlm_irq_frame_end(pipe->output->dlm);
if (pipe->hgo)
vsp1_hgo_frame_end(pipe->hgo);
if (pipe->frame_end)
pipe->frame_end(pipe);
pipe->sequence++;
}
/*
* 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_dl_list *dl, unsigned int alpha)
{
if (!pipe->uds)
return;
/*
* The BRU background color has a fixed alpha value set to 255, the
* output alpha value is thus always equal to 255.
*/
if (pipe->uds_input->type == VSP1_ENTITY_BRU)
alpha = 255;
vsp1_uds_set_alpha(pipe->uds, dl, alpha);
}
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->info->wpf_count; ++i) {
struct vsp1_rwpf *wpf = vsp1->wpf[i];
struct vsp1_pipeline *pipe;
if (wpf == NULL)
continue;
pipe = wpf->pipe;
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->info->wpf_count; ++i) {
struct vsp1_rwpf *wpf = vsp1->wpf[i];
struct vsp1_pipeline *pipe;
if (wpf == NULL)
continue;
pipe = wpf->pipe;
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 long flags;
unsigned int i;
/* Resume all running pipelines. */
for (i = 0; i < vsp1->info->wpf_count; ++i) {
struct vsp1_rwpf *wpf = vsp1->wpf[i];
struct vsp1_pipeline *pipe;
if (wpf == NULL)
continue;
pipe = wpf->pipe;
if (pipe == NULL)
continue;
spin_lock_irqsave(&pipe->irqlock, flags);
if (vsp1_pipeline_ready(pipe))
vsp1_pipeline_run(pipe);
spin_unlock_irqrestore(&pipe->irqlock, flags);
}
}
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