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/*
* vsp1_rpf.c -- R-Car VSP1 Read 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 RPF_MAX_WIDTH 8190
#define RPF_MAX_HEIGHT 8190
/* -----------------------------------------------------------------------------
* Device Access
*/
static inline void vsp1_rpf_write(struct vsp1_rwpf *rpf,
struct vsp1_dl_list *dl, u32 reg, u32 data)
{
vsp1_dl_list_write(dl, reg + rpf->entity.index * VI6_RPF_OFFSET, data);
}
/* -----------------------------------------------------------------------------
* V4L2 Subdevice Operations
*/
static struct v4l2_subdev_ops rpf_ops = {
.pad = &vsp1_rwpf_pad_ops,
};
/* -----------------------------------------------------------------------------
* VSP1 Entity Operations
*/
static void rpf_set_memory(struct vsp1_entity *entity, struct vsp1_dl_list *dl)
{
struct vsp1_rwpf *rpf = entity_to_rwpf(entity);
vsp1_rpf_write(rpf, dl, VI6_RPF_SRCM_ADDR_Y,
rpf->mem.addr[0] + rpf->offsets[0]);
vsp1_rpf_write(rpf, dl, VI6_RPF_SRCM_ADDR_C0,
rpf->mem.addr[1] + rpf->offsets[1]);
vsp1_rpf_write(rpf, dl, VI6_RPF_SRCM_ADDR_C1,
rpf->mem.addr[2] + rpf->offsets[1]);
}
static void rpf_configure(struct vsp1_entity *entity,
struct vsp1_pipeline *pipe,
struct vsp1_dl_list *dl)
{
struct vsp1_rwpf *rpf = to_rwpf(&entity->subdev);
const struct vsp1_format_info *fmtinfo = rpf->fmtinfo;
const struct v4l2_pix_format_mplane *format = &rpf->format;
const struct v4l2_mbus_framefmt *source_format;
const struct v4l2_mbus_framefmt *sink_format;
const struct v4l2_rect *crop;
unsigned int left = 0;
unsigned int top = 0;
u32 pstride;
u32 infmt;
/* Source size, stride and crop offsets.
*
* The crop offsets correspond to the location of the crop rectangle top
* left corner in the plane buffer. Only two offsets are needed, as
* planes 2 and 3 always have identical strides.
*/
crop = vsp1_rwpf_get_crop(rpf, rpf->entity.config);
vsp1_rpf_write(rpf, dl, VI6_RPF_SRC_BSIZE,
(crop->width << VI6_RPF_SRC_BSIZE_BHSIZE_SHIFT) |
(crop->height << VI6_RPF_SRC_BSIZE_BVSIZE_SHIFT));
vsp1_rpf_write(rpf, dl, VI6_RPF_SRC_ESIZE,
(crop->width << VI6_RPF_SRC_ESIZE_EHSIZE_SHIFT) |
(crop->height << VI6_RPF_SRC_ESIZE_EVSIZE_SHIFT));
rpf->offsets[0] = crop->top * format->plane_fmt[0].bytesperline
+ crop->left * fmtinfo->bpp[0] / 8;
pstride = format->plane_fmt[0].bytesperline
<< VI6_RPF_SRCM_PSTRIDE_Y_SHIFT;
if (format->num_planes > 1) {
rpf->offsets[1] = crop->top * format->plane_fmt[1].bytesperline
+ crop->left * fmtinfo->bpp[1] / 8;
pstride |= format->plane_fmt[1].bytesperline
<< VI6_RPF_SRCM_PSTRIDE_C_SHIFT;
} else {
rpf->offsets[1] = 0;
}
vsp1_rpf_write(rpf, dl, VI6_RPF_SRCM_PSTRIDE, pstride);
/* Format */
sink_format = vsp1_entity_get_pad_format(&rpf->entity,
rpf->entity.config,
RWPF_PAD_SINK);
source_format = vsp1_entity_get_pad_format(&rpf->entity,
rpf->entity.config,
RWPF_PAD_SOURCE);
infmt = VI6_RPF_INFMT_CIPM
| (fmtinfo->hwfmt << VI6_RPF_INFMT_RDFMT_SHIFT);
if (fmtinfo->swap_yc)
infmt |= VI6_RPF_INFMT_SPYCS;
if (fmtinfo->swap_uv)
infmt |= VI6_RPF_INFMT_SPUVS;
if (sink_format->code != source_format->code)
infmt |= VI6_RPF_INFMT_CSC;
vsp1_rpf_write(rpf, dl, VI6_RPF_INFMT, infmt);
vsp1_rpf_write(rpf, dl, VI6_RPF_DSWAP, fmtinfo->swap);
/* Output location */
if (pipe->bru) {
const struct v4l2_rect *compose;
compose = vsp1_entity_get_pad_compose(pipe->bru,
pipe->bru->config,
rpf->bru_input);
left = compose->left;
top = compose->top;
}
vsp1_rpf_write(rpf, dl, VI6_RPF_LOC,
(left << VI6_RPF_LOC_HCOORD_SHIFT) |
(top << VI6_RPF_LOC_VCOORD_SHIFT));
/* Use the alpha channel (extended to 8 bits) when available or an
* alpha value set through the V4L2_CID_ALPHA_COMPONENT control
* otherwise. Disable color keying.
*/
vsp1_rpf_write(rpf, dl, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_AEXT_EXT |
(fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED
: VI6_RPF_ALPH_SEL_ASEL_FIXED));
vsp1_rpf_write(rpf, dl, VI6_RPF_VRTCOL_SET,
rpf->alpha << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
vsp1_pipeline_propagate_alpha(pipe, &rpf->entity, dl, rpf->alpha);
vsp1_rpf_write(rpf, dl, VI6_RPF_MSK_CTRL, 0);
vsp1_rpf_write(rpf, dl, VI6_RPF_CKEY_CTRL, 0);
}
static const struct vsp1_entity_operations rpf_entity_ops = {
.set_memory = rpf_set_memory,
.configure = rpf_configure,
};
/* -----------------------------------------------------------------------------
* Initialization and Cleanup
*/
struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index)
{
struct vsp1_rwpf *rpf;
char name[6];
int ret;
rpf = devm_kzalloc(vsp1->dev, sizeof(*rpf), GFP_KERNEL);
if (rpf == NULL)
return ERR_PTR(-ENOMEM);
rpf->max_width = RPF_MAX_WIDTH;
rpf->max_height = RPF_MAX_HEIGHT;
rpf->entity.ops = &rpf_entity_ops;
rpf->entity.type = VSP1_ENTITY_RPF;
rpf->entity.index = index;
sprintf(name, "rpf.%u", index);
ret = vsp1_entity_init(vsp1, &rpf->entity, name, 2, &rpf_ops);
if (ret < 0)
return ERR_PTR(ret);
/* Initialize the control handler. */
ret = vsp1_rwpf_init_ctrls(rpf);
if (ret < 0) {
dev_err(vsp1->dev, "rpf%u: failed to initialize controls\n",
index);
goto error;
}
return rpf;
error:
vsp1_entity_destroy(&rpf->entity);
return ERR_PTR(ret);
}
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