Release 4.11 drivers/media/platform/vsp1/vsp1_lut.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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 32 | 100.00% | 2 | 100.00% |
| Total | 32 | 100.00% | 2 | 100.00% |
/* -----------------------------------------------------------------------------
* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 113 | 100.00% | 5 | 100.00% |
| Total | 113 | 100.00% | 5 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 50 | 100.00% | 3 | 100.00% |
| Total | 50 | 100.00% | 3 | 100.00% |
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));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 45 | 84.91% | 3 | 50.00% |
| Hans Verkuil | 5 | 9.43% | 2 | 33.33% |
| Boris Brezillon | 3 | 5.66% | 1 | 16.67% |
| Total | 53 | 100.00% | 6 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 32 | 82.05% | 3 | 60.00% |
| Hans Verkuil | 7 | 17.95% | 2 | 40.00% |
| Total | 39 | 100.00% | 5 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 249 | 97.65% | 4 | 66.67% |
| Boris Brezillon | 4 | 1.57% | 1 | 16.67% |
| Hans Verkuil | 2 | 0.78% | 1 | 16.67% |
| Total | 255 | 100.00% | 6 | 100.00% |
/* -----------------------------------------------------------------------------
* 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;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 119 | 100.00% | 8 | 100.00% |
| Total | 119 | 100.00% | 8 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 197 | 100.00% | 6 | 100.00% |
| Total | 197 | 100.00% | 6 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Pinchart | 1003 | 97.95% | 20 | 83.33% |
| Hans Verkuil | 14 | 1.37% | 3 | 12.50% |
| Boris Brezillon | 7 | 0.68% | 1 | 4.17% |
| Total | 1024 | 100.00% | 24 | 100.00% |
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