264 lines
6.4 KiB
C
264 lines
6.4 KiB
C
/*
|
|
* vsp1_lut.c -- R-Car VSP1 Look-Up Table
|
|
*
|
|
* 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_dl.h"
|
|
#include "vsp1_lut.h"
|
|
|
|
#define LUT_MIN_SIZE 4U
|
|
#define LUT_MAX_SIZE 8190U
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Device Access
|
|
*/
|
|
|
|
static inline void vsp1_lut_write(struct vsp1_lut *lut, struct vsp1_dl_list *dl,
|
|
u32 reg, u32 data)
|
|
{
|
|
vsp1_dl_list_write(dl, reg, data);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Controls
|
|
*/
|
|
|
|
#define V4L2_CID_VSP1_LUT_TABLE (V4L2_CID_USER_BASE | 0x1001)
|
|
|
|
static int lut_set_table(struct vsp1_lut *lut, struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct vsp1_dl_body *dlb;
|
|
unsigned int i;
|
|
|
|
dlb = vsp1_dl_fragment_alloc(lut->entity.vsp1, 256);
|
|
if (!dlb)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < 256; ++i)
|
|
vsp1_dl_fragment_write(dlb, VI6_LUT_TABLE + 4 * i,
|
|
ctrl->p_new.p_u32[i]);
|
|
|
|
spin_lock_irq(&lut->lock);
|
|
swap(lut->lut, dlb);
|
|
spin_unlock_irq(&lut->lock);
|
|
|
|
vsp1_dl_fragment_free(dlb);
|
|
return 0;
|
|
}
|
|
|
|
static int lut_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct vsp1_lut *lut =
|
|
container_of(ctrl->handler, struct vsp1_lut, ctrls);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_VSP1_LUT_TABLE:
|
|
lut_set_table(lut, ctrl);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops lut_ctrl_ops = {
|
|
.s_ctrl = lut_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_ctrl_config lut_table_control = {
|
|
.ops = &lut_ctrl_ops,
|
|
.id = V4L2_CID_VSP1_LUT_TABLE,
|
|
.name = "Look-Up Table",
|
|
.type = V4L2_CTRL_TYPE_U32,
|
|
.min = 0x00000000,
|
|
.max = 0x00ffffff,
|
|
.step = 1,
|
|
.def = 0,
|
|
.dims = { 256},
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 Subdevice Pad Operations
|
|
*/
|
|
|
|
static int lut_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_AHSV8888_1X32,
|
|
MEDIA_BUS_FMT_AYUV8_1X32,
|
|
};
|
|
|
|
return vsp1_subdev_enum_mbus_code(subdev, cfg, code, codes,
|
|
ARRAY_SIZE(codes));
|
|
}
|
|
|
|
static int lut_enum_frame_size(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_frame_size_enum *fse)
|
|
{
|
|
return vsp1_subdev_enum_frame_size(subdev, cfg, fse, LUT_MIN_SIZE,
|
|
LUT_MIN_SIZE, LUT_MAX_SIZE,
|
|
LUT_MAX_SIZE);
|
|
}
|
|
|
|
static int lut_set_format(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct vsp1_lut *lut = to_lut(subdev);
|
|
struct v4l2_subdev_pad_config *config;
|
|
struct v4l2_mbus_framefmt *format;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&lut->entity.lock);
|
|
|
|
config = vsp1_entity_get_pad_config(&lut->entity, cfg, fmt->which);
|
|
if (!config) {
|
|
ret = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
/* Default to YUV if the requested format is not supported. */
|
|
if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
|
|
fmt->format.code != MEDIA_BUS_FMT_AHSV8888_1X32 &&
|
|
fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32)
|
|
fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32;
|
|
|
|
format = vsp1_entity_get_pad_format(&lut->entity, config, fmt->pad);
|
|
|
|
if (fmt->pad == LUT_PAD_SOURCE) {
|
|
/* The LUT output format can't be modified. */
|
|
fmt->format = *format;
|
|
goto done;
|
|
}
|
|
|
|
format->code = fmt->format.code;
|
|
format->width = clamp_t(unsigned int, fmt->format.width,
|
|
LUT_MIN_SIZE, LUT_MAX_SIZE);
|
|
format->height = clamp_t(unsigned int, fmt->format.height,
|
|
LUT_MIN_SIZE, LUT_MAX_SIZE);
|
|
format->field = V4L2_FIELD_NONE;
|
|
format->colorspace = V4L2_COLORSPACE_SRGB;
|
|
|
|
fmt->format = *format;
|
|
|
|
/* Propagate the format to the source pad. */
|
|
format = vsp1_entity_get_pad_format(&lut->entity, config,
|
|
LUT_PAD_SOURCE);
|
|
*format = fmt->format;
|
|
|
|
done:
|
|
mutex_unlock(&lut->entity.lock);
|
|
return ret;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 Subdevice Operations
|
|
*/
|
|
|
|
static const struct v4l2_subdev_pad_ops lut_pad_ops = {
|
|
.init_cfg = vsp1_entity_init_cfg,
|
|
.enum_mbus_code = lut_enum_mbus_code,
|
|
.enum_frame_size = lut_enum_frame_size,
|
|
.get_fmt = vsp1_subdev_get_pad_format,
|
|
.set_fmt = lut_set_format,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops lut_ops = {
|
|
.pad = &lut_pad_ops,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* VSP1 Entity Operations
|
|
*/
|
|
|
|
static void lut_configure(struct vsp1_entity *entity,
|
|
struct vsp1_pipeline *pipe,
|
|
struct vsp1_dl_list *dl,
|
|
enum vsp1_entity_params params)
|
|
{
|
|
struct vsp1_lut *lut = to_lut(&entity->subdev);
|
|
struct vsp1_dl_body *dlb;
|
|
unsigned long flags;
|
|
|
|
switch (params) {
|
|
case VSP1_ENTITY_PARAMS_INIT:
|
|
vsp1_lut_write(lut, dl, VI6_LUT_CTRL, VI6_LUT_CTRL_EN);
|
|
break;
|
|
|
|
case VSP1_ENTITY_PARAMS_PARTITION:
|
|
break;
|
|
|
|
case VSP1_ENTITY_PARAMS_RUNTIME:
|
|
spin_lock_irqsave(&lut->lock, flags);
|
|
dlb = lut->lut;
|
|
lut->lut = NULL;
|
|
spin_unlock_irqrestore(&lut->lock, flags);
|
|
|
|
if (dlb)
|
|
vsp1_dl_list_add_fragment(dl, dlb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static const struct vsp1_entity_operations lut_entity_ops = {
|
|
.configure = lut_configure,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Initialization and Cleanup
|
|
*/
|
|
|
|
struct vsp1_lut *vsp1_lut_create(struct vsp1_device *vsp1)
|
|
{
|
|
struct vsp1_lut *lut;
|
|
int ret;
|
|
|
|
lut = devm_kzalloc(vsp1->dev, sizeof(*lut), GFP_KERNEL);
|
|
if (lut == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
spin_lock_init(&lut->lock);
|
|
|
|
lut->entity.ops = &lut_entity_ops;
|
|
lut->entity.type = VSP1_ENTITY_LUT;
|
|
|
|
ret = vsp1_entity_init(vsp1, &lut->entity, "lut", 2, &lut_ops,
|
|
MEDIA_ENT_F_PROC_VIDEO_LUT);
|
|
if (ret < 0)
|
|
return ERR_PTR(ret);
|
|
|
|
/* Initialize the control handler. */
|
|
v4l2_ctrl_handler_init(&lut->ctrls, 1);
|
|
v4l2_ctrl_new_custom(&lut->ctrls, &lut_table_control, NULL);
|
|
|
|
lut->entity.subdev.ctrl_handler = &lut->ctrls;
|
|
|
|
if (lut->ctrls.error) {
|
|
dev_err(vsp1->dev, "lut: failed to initialize controls\n");
|
|
ret = lut->ctrls.error;
|
|
vsp1_entity_destroy(&lut->entity);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
v4l2_ctrl_handler_setup(&lut->ctrls);
|
|
|
|
return lut;
|
|
}
|