mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 03:11:46 +00:00
823329dfee
Don't duplicate the code in every module driver, centralize it in a single place. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
357 lines
9.1 KiB
C
357 lines
9.1 KiB
C
/*
|
|
* vsp1_sru.c -- R-Car VSP1 Super Resolution Unit
|
|
*
|
|
* Copyright (C) 2013 Renesas 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 <linux/gfp.h>
|
|
|
|
#include <media/v4l2-subdev.h>
|
|
|
|
#include "vsp1.h"
|
|
#include "vsp1_sru.h"
|
|
|
|
#define SRU_MIN_SIZE 4U
|
|
#define SRU_MAX_SIZE 8190U
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Device Access
|
|
*/
|
|
|
|
static inline void vsp1_sru_write(struct vsp1_sru *sru, u32 reg, u32 data)
|
|
{
|
|
vsp1_mod_write(&sru->entity, reg, data);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Controls
|
|
*/
|
|
|
|
#define V4L2_CID_VSP1_SRU_INTENSITY (V4L2_CID_USER_BASE + 1)
|
|
|
|
struct vsp1_sru_param {
|
|
u32 ctrl0;
|
|
u32 ctrl2;
|
|
};
|
|
|
|
#define VI6_SRU_CTRL0_PARAMS(p0, p1) \
|
|
(((p0) << VI6_SRU_CTRL0_PARAM0_SHIFT) | \
|
|
((p1) << VI6_SRU_CTRL0_PARAM1_SHIFT))
|
|
|
|
#define VI6_SRU_CTRL2_PARAMS(p6, p7, p8) \
|
|
(((p6) << VI6_SRU_CTRL2_PARAM6_SHIFT) | \
|
|
((p7) << VI6_SRU_CTRL2_PARAM7_SHIFT) | \
|
|
((p8) << VI6_SRU_CTRL2_PARAM8_SHIFT))
|
|
|
|
static const struct vsp1_sru_param vsp1_sru_params[] = {
|
|
{
|
|
.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) | VI6_SRU_CTRL0_EN,
|
|
.ctrl2 = VI6_SRU_CTRL2_PARAMS(24, 40, 255),
|
|
}, {
|
|
.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) | VI6_SRU_CTRL0_EN,
|
|
.ctrl2 = VI6_SRU_CTRL2_PARAMS(8, 16, 255),
|
|
}, {
|
|
.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) | VI6_SRU_CTRL0_EN,
|
|
.ctrl2 = VI6_SRU_CTRL2_PARAMS(36, 60, 255),
|
|
}, {
|
|
.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) | VI6_SRU_CTRL0_EN,
|
|
.ctrl2 = VI6_SRU_CTRL2_PARAMS(12, 27, 255),
|
|
}, {
|
|
.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) | VI6_SRU_CTRL0_EN,
|
|
.ctrl2 = VI6_SRU_CTRL2_PARAMS(48, 80, 255),
|
|
}, {
|
|
.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) | VI6_SRU_CTRL0_EN,
|
|
.ctrl2 = VI6_SRU_CTRL2_PARAMS(16, 36, 255),
|
|
},
|
|
};
|
|
|
|
static int sru_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct vsp1_sru *sru =
|
|
container_of(ctrl->handler, struct vsp1_sru, ctrls);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_VSP1_SRU_INTENSITY:
|
|
sru->intensity = ctrl->val;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops sru_ctrl_ops = {
|
|
.s_ctrl = sru_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_ctrl_config sru_intensity_control = {
|
|
.ops = &sru_ctrl_ops,
|
|
.id = V4L2_CID_VSP1_SRU_INTENSITY,
|
|
.name = "Intensity",
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.min = 1,
|
|
.max = 6,
|
|
.def = 1,
|
|
.step = 1,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 Subdevice Core Operations
|
|
*/
|
|
|
|
static int sru_s_stream(struct v4l2_subdev *subdev, int enable)
|
|
{
|
|
const struct vsp1_sru_param *param;
|
|
struct vsp1_sru *sru = to_sru(subdev);
|
|
struct v4l2_mbus_framefmt *input;
|
|
struct v4l2_mbus_framefmt *output;
|
|
u32 ctrl0;
|
|
|
|
if (!enable)
|
|
return 0;
|
|
|
|
input = &sru->entity.formats[SRU_PAD_SINK];
|
|
output = &sru->entity.formats[SRU_PAD_SOURCE];
|
|
|
|
if (input->code == MEDIA_BUS_FMT_ARGB8888_1X32)
|
|
ctrl0 = VI6_SRU_CTRL0_PARAM2 | VI6_SRU_CTRL0_PARAM3
|
|
| VI6_SRU_CTRL0_PARAM4;
|
|
else
|
|
ctrl0 = VI6_SRU_CTRL0_PARAM3;
|
|
|
|
if (input->width != output->width)
|
|
ctrl0 |= VI6_SRU_CTRL0_MODE_UPSCALE;
|
|
|
|
param = &vsp1_sru_params[sru->intensity - 1];
|
|
|
|
ctrl0 |= param->ctrl0;
|
|
|
|
vsp1_sru_write(sru, VI6_SRU_CTRL0, ctrl0);
|
|
vsp1_sru_write(sru, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);
|
|
vsp1_sru_write(sru, VI6_SRU_CTRL2, param->ctrl2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 Subdevice Pad Operations
|
|
*/
|
|
|
|
static int sru_enum_mbus_code(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
static const unsigned int codes[] = {
|
|
MEDIA_BUS_FMT_ARGB8888_1X32,
|
|
MEDIA_BUS_FMT_AYUV8_1X32,
|
|
};
|
|
struct vsp1_sru *sru = to_sru(subdev);
|
|
struct v4l2_mbus_framefmt *format;
|
|
|
|
if (code->pad == SRU_PAD_SINK) {
|
|
if (code->index >= ARRAY_SIZE(codes))
|
|
return -EINVAL;
|
|
|
|
code->code = codes[code->index];
|
|
} else {
|
|
/* The SRU can't perform format conversion, the sink format is
|
|
* always identical to the source format.
|
|
*/
|
|
if (code->index)
|
|
return -EINVAL;
|
|
|
|
format = vsp1_entity_get_pad_format(&sru->entity, cfg,
|
|
SRU_PAD_SINK, code->which);
|
|
code->code = format->code;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sru_enum_frame_size(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_frame_size_enum *fse)
|
|
{
|
|
struct vsp1_sru *sru = to_sru(subdev);
|
|
struct v4l2_mbus_framefmt *format;
|
|
|
|
format = vsp1_entity_get_pad_format(&sru->entity, cfg,
|
|
SRU_PAD_SINK, fse->which);
|
|
|
|
if (fse->index || fse->code != format->code)
|
|
return -EINVAL;
|
|
|
|
if (fse->pad == SRU_PAD_SINK) {
|
|
fse->min_width = SRU_MIN_SIZE;
|
|
fse->max_width = SRU_MAX_SIZE;
|
|
fse->min_height = SRU_MIN_SIZE;
|
|
fse->max_height = SRU_MAX_SIZE;
|
|
} else {
|
|
fse->min_width = format->width;
|
|
fse->min_height = format->height;
|
|
if (format->width <= SRU_MAX_SIZE / 2 &&
|
|
format->height <= SRU_MAX_SIZE / 2) {
|
|
fse->max_width = format->width * 2;
|
|
fse->max_height = format->height * 2;
|
|
} else {
|
|
fse->max_width = format->width;
|
|
fse->max_height = format->height;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sru_get_format(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct vsp1_sru *sru = to_sru(subdev);
|
|
|
|
fmt->format = *vsp1_entity_get_pad_format(&sru->entity, cfg, fmt->pad,
|
|
fmt->which);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sru_try_format(struct vsp1_sru *sru,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
unsigned int pad, struct v4l2_mbus_framefmt *fmt,
|
|
enum v4l2_subdev_format_whence which)
|
|
{
|
|
struct v4l2_mbus_framefmt *format;
|
|
unsigned int input_area;
|
|
unsigned int output_area;
|
|
|
|
switch (pad) {
|
|
case SRU_PAD_SINK:
|
|
/* Default to YUV if the requested format is not supported. */
|
|
if (fmt->code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
|
|
fmt->code != MEDIA_BUS_FMT_AYUV8_1X32)
|
|
fmt->code = MEDIA_BUS_FMT_AYUV8_1X32;
|
|
|
|
fmt->width = clamp(fmt->width, SRU_MIN_SIZE, SRU_MAX_SIZE);
|
|
fmt->height = clamp(fmt->height, SRU_MIN_SIZE, SRU_MAX_SIZE);
|
|
break;
|
|
|
|
case SRU_PAD_SOURCE:
|
|
/* The SRU can't perform format conversion. */
|
|
format = vsp1_entity_get_pad_format(&sru->entity, cfg,
|
|
SRU_PAD_SINK, which);
|
|
fmt->code = format->code;
|
|
|
|
/* We can upscale by 2 in both direction, but not independently.
|
|
* Compare the input and output rectangles areas (avoiding
|
|
* integer overflows on the output): if the requested output
|
|
* area is larger than 1.5^2 the input area upscale by two,
|
|
* otherwise don't scale.
|
|
*/
|
|
input_area = format->width * format->height;
|
|
output_area = min(fmt->width, SRU_MAX_SIZE)
|
|
* min(fmt->height, SRU_MAX_SIZE);
|
|
|
|
if (fmt->width <= SRU_MAX_SIZE / 2 &&
|
|
fmt->height <= SRU_MAX_SIZE / 2 &&
|
|
output_area > input_area * 9 / 4) {
|
|
fmt->width = format->width * 2;
|
|
fmt->height = format->height * 2;
|
|
} else {
|
|
fmt->width = format->width;
|
|
fmt->height = format->height;
|
|
}
|
|
break;
|
|
}
|
|
|
|
fmt->field = V4L2_FIELD_NONE;
|
|
fmt->colorspace = V4L2_COLORSPACE_SRGB;
|
|
}
|
|
|
|
static int sru_set_format(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct vsp1_sru *sru = to_sru(subdev);
|
|
struct v4l2_mbus_framefmt *format;
|
|
|
|
sru_try_format(sru, cfg, fmt->pad, &fmt->format, fmt->which);
|
|
|
|
format = vsp1_entity_get_pad_format(&sru->entity, cfg, fmt->pad,
|
|
fmt->which);
|
|
*format = fmt->format;
|
|
|
|
if (fmt->pad == SRU_PAD_SINK) {
|
|
/* Propagate the format to the source pad. */
|
|
format = vsp1_entity_get_pad_format(&sru->entity, cfg,
|
|
SRU_PAD_SOURCE, fmt->which);
|
|
*format = fmt->format;
|
|
|
|
sru_try_format(sru, cfg, SRU_PAD_SOURCE, format, fmt->which);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 Subdevice Operations
|
|
*/
|
|
|
|
static struct v4l2_subdev_video_ops sru_video_ops = {
|
|
.s_stream = sru_s_stream,
|
|
};
|
|
|
|
static struct v4l2_subdev_pad_ops sru_pad_ops = {
|
|
.enum_mbus_code = sru_enum_mbus_code,
|
|
.enum_frame_size = sru_enum_frame_size,
|
|
.get_fmt = sru_get_format,
|
|
.set_fmt = sru_set_format,
|
|
};
|
|
|
|
static struct v4l2_subdev_ops sru_ops = {
|
|
.video = &sru_video_ops,
|
|
.pad = &sru_pad_ops,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Initialization and Cleanup
|
|
*/
|
|
|
|
struct vsp1_sru *vsp1_sru_create(struct vsp1_device *vsp1)
|
|
{
|
|
struct vsp1_sru *sru;
|
|
int ret;
|
|
|
|
sru = devm_kzalloc(vsp1->dev, sizeof(*sru), GFP_KERNEL);
|
|
if (sru == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
sru->entity.type = VSP1_ENTITY_SRU;
|
|
|
|
ret = vsp1_entity_init(vsp1, &sru->entity, "sru", 2, &sru_ops);
|
|
if (ret < 0)
|
|
return ERR_PTR(ret);
|
|
|
|
/* Initialize the control handler. */
|
|
v4l2_ctrl_handler_init(&sru->ctrls, 1);
|
|
v4l2_ctrl_new_custom(&sru->ctrls, &sru_intensity_control, NULL);
|
|
|
|
sru->intensity = 1;
|
|
|
|
sru->entity.subdev.ctrl_handler = &sru->ctrls;
|
|
|
|
if (sru->ctrls.error) {
|
|
dev_err(vsp1->dev, "sru: failed to initialize controls\n");
|
|
ret = sru->ctrls.error;
|
|
vsp1_entity_destroy(&sru->entity);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
return sru;
|
|
}
|