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/*
* vsp1_wpf.c -- R-Car VSP1 Write Pixel Formatter
*
* Copyright (C) 2013-2014 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/device.h>
#include <media/v4l2-subdev.h>
#include "vsp1.h"
#include "vsp1_dl.h"
#include "vsp1_pipe.h"
#include "vsp1_rwpf.h"
#include "vsp1_video.h"
#define WPF_GEN2_MAX_WIDTH 2048U
#define WPF_GEN2_MAX_HEIGHT 2048U
#define WPF_GEN3_MAX_WIDTH 8190U
#define WPF_GEN3_MAX_HEIGHT 8190U
/* -----------------------------------------------------------------------------
* Device Access
*/
static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf,
struct vsp1_dl_list *dl, u32 reg, u32 data)
{
vsp1_dl_list_write(dl, reg + wpf->entity.index * VI6_WPF_OFFSET, data);
}
/* -----------------------------------------------------------------------------
* V4L2 Subdevice Core Operations
*/
static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
{
struct vsp1_rwpf *wpf = to_rwpf(subdev);
struct vsp1_device *vsp1 = wpf->entity.vsp1;
if (enable)
return 0;
/* Write to registers directly when stopping the stream as there will be
* no pipeline run to apply the display list.
*/
vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
vsp1_write(vsp1, wpf->entity.index * VI6_WPF_OFFSET +
VI6_WPF_SRCRPF, 0);
return 0;
}
/* -----------------------------------------------------------------------------
* V4L2 Subdevice Operations
*/
static struct v4l2_subdev_video_ops wpf_video_ops = {
.s_stream = wpf_s_stream,
};
static struct v4l2_subdev_ops wpf_ops = {
.video = &wpf_video_ops,
.pad = &vsp1_rwpf_pad_ops,
};
/* -----------------------------------------------------------------------------
* VSP1 Entity Operations
*/
static void vsp1_wpf_destroy(struct vsp1_entity *entity)
{
struct vsp1_rwpf *wpf = entity_to_rwpf(entity);
vsp1_dlm_destroy(wpf->dlm);
}
static void wpf_set_memory(struct vsp1_entity *entity, struct vsp1_dl_list *dl)
{
struct vsp1_rwpf *wpf = entity_to_rwpf(entity);
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_Y, wpf->mem.addr[0]);
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C0, wpf->mem.addr[1]);
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C1, wpf->mem.addr[2]);
}
static void wpf_configure(struct vsp1_entity *entity,
struct vsp1_pipeline *pipe,
struct vsp1_dl_list *dl)
{
struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
struct vsp1_device *vsp1 = wpf->entity.vsp1;
const struct v4l2_mbus_framefmt *source_format;
const struct v4l2_mbus_framefmt *sink_format;
const struct v4l2_rect *crop;
unsigned int i;
u32 outfmt = 0;
u32 srcrpf = 0;
/* Cropping */
crop = vsp1_rwpf_get_crop(wpf, wpf->entity.config);
vsp1_wpf_write(wpf, dl, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
(crop->left << VI6_WPF_SZCLIP_OFST_SHIFT) |
(crop->width << VI6_WPF_SZCLIP_SIZE_SHIFT));
vsp1_wpf_write(wpf, dl, VI6_WPF_VSZCLIP, VI6_WPF_SZCLIP_EN |
(crop->top << VI6_WPF_SZCLIP_OFST_SHIFT) |
(crop->height << VI6_WPF_SZCLIP_SIZE_SHIFT));
/* Format */
sink_format = vsp1_entity_get_pad_format(&wpf->entity,
wpf->entity.config,
RWPF_PAD_SINK);
source_format = vsp1_entity_get_pad_format(&wpf->entity,
wpf->entity.config,
RWPF_PAD_SOURCE);
if (!pipe->lif) {
const struct v4l2_pix_format_mplane *format = &wpf->format;
const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;
if (fmtinfo->alpha)
outfmt |= VI6_WPF_OUTFMT_PXA;
if (fmtinfo->swap_yc)
outfmt |= VI6_WPF_OUTFMT_SPYCS;
if (fmtinfo->swap_uv)
outfmt |= VI6_WPF_OUTFMT_SPUVS;
/* Destination stride and byte swapping. */
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_Y,
format->plane_fmt[0].bytesperline);
if (format->num_planes > 1)
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_C,
format->plane_fmt[1].bytesperline);
vsp1_wpf_write(wpf, dl, VI6_WPF_DSWAP, fmtinfo->swap);
}
if (sink_format->code != source_format->code)
outfmt |= VI6_WPF_OUTFMT_CSC;
outfmt |= wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT;
vsp1_wpf_write(wpf, dl, VI6_WPF_OUTFMT, outfmt);
vsp1_dl_list_write(dl, VI6_DPR_WPF_FPORCH(wpf->entity.index),
VI6_DPR_WPF_FPORCH_FP_WPFN);
vsp1_dl_list_write(dl, VI6_WPF_WRBCK_CTRL, 0);
/* Sources. If the pipeline has a single input and BRU is not used,
* configure it as the master layer. Otherwise configure all
* inputs as sub-layers and select the virtual RPF as the master
* layer.
*/
for (i = 0; i < vsp1->info->rpf_count; ++i) {
struct vsp1_rwpf *input = pipe->inputs[i];
if (!input)
continue;
srcrpf |= (!pipe->bru && pipe->num_inputs == 1)
? VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index)
: VI6_WPF_SRCRPF_RPF_ACT_SUB(input->entity.index);
}
if (pipe->bru || pipe->num_inputs > 1)
srcrpf |= VI6_WPF_SRCRPF_VIRACT_MST;
vsp1_wpf_write(wpf, dl, VI6_WPF_SRCRPF, srcrpf);
/* Enable interrupts */
vsp1_dl_list_write(dl, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
vsp1_dl_list_write(dl, VI6_WPF_IRQ_ENB(wpf->entity.index),
VI6_WFP_IRQ_ENB_FREE);
}
static const struct vsp1_entity_operations wpf_entity_ops = {
.destroy = vsp1_wpf_destroy,
.set_memory = wpf_set_memory,
.configure = wpf_configure,
};
/* -----------------------------------------------------------------------------
* Initialization and Cleanup
*/
struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
{
struct vsp1_rwpf *wpf;
char name[6];
int ret;
wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
if (wpf == NULL)
return ERR_PTR(-ENOMEM);
if (vsp1->info->gen == 2) {
wpf->max_width = WPF_GEN2_MAX_WIDTH;
wpf->max_height = WPF_GEN2_MAX_HEIGHT;
} else {
wpf->max_width = WPF_GEN3_MAX_WIDTH;
wpf->max_height = WPF_GEN3_MAX_HEIGHT;
}
wpf->entity.ops = &wpf_entity_ops;
wpf->entity.type = VSP1_ENTITY_WPF;
wpf->entity.index = index;
sprintf(name, "wpf.%u", index);
ret = vsp1_entity_init(vsp1, &wpf->entity, name, 2, &wpf_ops);
if (ret < 0)
return ERR_PTR(ret);
/* Initialize the display list manager. */
wpf->dlm = vsp1_dlm_create(vsp1, index, 4);
if (!wpf->dlm) {
ret = -ENOMEM;
goto error;
}
/* Initialize the control handler. */
ret = vsp1_rwpf_init_ctrls(wpf);
if (ret < 0) {
dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
index);
goto error;
}
return wpf;
error:
vsp1_entity_destroy(&wpf->entity);
return ERR_PTR(ret);
}
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