Release 4.11 drivers/media/platform/vsp1/vsp1_clu.c
/*
* vsp1_clu.c -- R-Car VSP1 Cubic Look-Up Table
*
* Copyright (C) 2015-2016 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 <linux/slab.h>
#include <media/v4l2-subdev.h>
#include "vsp1.h"
#include "vsp1_clu.h"
#include "vsp1_dl.h"
#define CLU_MIN_SIZE 4U
#define CLU_MAX_SIZE 8190U
/* -----------------------------------------------------------------------------
* Device Access
*/
static inline void vsp1_clu_write(struct vsp1_clu *clu, struct vsp1_dl_list *dl,
u32 reg, u32 data)
{
vsp1_dl_list_write(dl, reg, data);
}
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/* -----------------------------------------------------------------------------
* Controls
*/
#define V4L2_CID_VSP1_CLU_TABLE (V4L2_CID_USER_BASE | 0x1001)
#define V4L2_CID_VSP1_CLU_MODE (V4L2_CID_USER_BASE | 0x1002)
#define V4L2_CID_VSP1_CLU_MODE_2D 0
#define V4L2_CID_VSP1_CLU_MODE_3D 1
static int clu_set_table(struct vsp1_clu *clu, struct v4l2_ctrl *ctrl)
{
struct vsp1_dl_body *dlb;
unsigned int i;
dlb = vsp1_dl_fragment_alloc(clu->entity.vsp1, 1 + 17 * 17 * 17);
if (!dlb)
return -ENOMEM;
vsp1_dl_fragment_write(dlb, VI6_CLU_ADDR, 0);
for (i = 0; i < 17 * 17 * 17; ++i)
vsp1_dl_fragment_write(dlb, VI6_CLU_DATA, ctrl->p_new.p_u32[i]);
spin_lock_irq(&clu->lock);
swap(clu->clu, dlb);
spin_unlock_irq(&clu->lock);
vsp1_dl_fragment_free(dlb);
return 0;
}
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static int clu_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vsp1_clu *clu =
container_of(ctrl->handler, struct vsp1_clu, ctrls);
switch (ctrl->id) {
case V4L2_CID_VSP1_CLU_TABLE:
clu_set_table(clu, ctrl);
break;
case V4L2_CID_VSP1_CLU_MODE:
clu->mode = ctrl->val;
break;
}
return 0;
}
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static const struct v4l2_ctrl_ops clu_ctrl_ops = {
.s_ctrl = clu_s_ctrl,
};
static const struct v4l2_ctrl_config clu_table_control = {
.ops = &clu_ctrl_ops,
.id = V4L2_CID_VSP1_CLU_TABLE,
.name = "Look-Up Table",
.type = V4L2_CTRL_TYPE_U32,
.min = 0x00000000,
.max = 0x00ffffff,
.step = 1,
.def = 0,
.dims = { 17, 17, 17 },
};
static const char * const clu_mode_menu[] = {
"2D",
"3D",
NULL,
};
static const struct v4l2_ctrl_config clu_mode_control = {
.ops = &clu_ctrl_ops,
.id = V4L2_CID_VSP1_CLU_MODE,
.name = "Mode",
.type = V4L2_CTRL_TYPE_MENU,
.min = 0,
.max = 1,
.def = 1,
.qmenu = clu_mode_menu,
};
/* -----------------------------------------------------------------------------
* V4L2 Subdevice Pad Operations
*/
static int clu_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));
}
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static int clu_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, CLU_MIN_SIZE,
CLU_MIN_SIZE, CLU_MAX_SIZE,
CLU_MAX_SIZE);
}
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static int clu_set_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct vsp1_clu *clu = to_clu(subdev);
struct v4l2_subdev_pad_config *config;
struct v4l2_mbus_framefmt *format;
int ret = 0;
mutex_lock(&clu->entity.lock);
config = vsp1_entity_get_pad_config(&clu->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(&clu->entity, config, fmt->pad);
if (fmt->pad == CLU_PAD_SOURCE) {
/* The CLU 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,
CLU_MIN_SIZE, CLU_MAX_SIZE);
format->height = clamp_t(unsigned int, fmt->format.height,
CLU_MIN_SIZE, CLU_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(&clu->entity, config,
CLU_PAD_SOURCE);
*format = fmt->format;
done:
mutex_unlock(&clu->entity.lock);
return ret;
}
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/* -----------------------------------------------------------------------------
* V4L2 Subdevice Operations
*/
static const struct v4l2_subdev_pad_ops clu_pad_ops = {
.init_cfg = vsp1_entity_init_cfg,
.enum_mbus_code = clu_enum_mbus_code,
.enum_frame_size = clu_enum_frame_size,
.get_fmt = vsp1_subdev_get_pad_format,
.set_fmt = clu_set_format,
};
static const struct v4l2_subdev_ops clu_ops = {
.pad = &clu_pad_ops,
};
/* -----------------------------------------------------------------------------
* VSP1 Entity Operations
*/
static void clu_configure(struct vsp1_entity *entity,
struct vsp1_pipeline *pipe,
struct vsp1_dl_list *dl,
enum vsp1_entity_params params)
{
struct vsp1_clu *clu = to_clu(&entity->subdev);
struct vsp1_dl_body *dlb;
unsigned long flags;
u32 ctrl = VI6_CLU_CTRL_AAI | VI6_CLU_CTRL_MVS | VI6_CLU_CTRL_EN;
switch (params) {
case VSP1_ENTITY_PARAMS_INIT: {
/*
* The format can't be changed during streaming, only verify it
* at setup time and store the information internally for future
* runtime configuration calls.
*/
struct v4l2_mbus_framefmt *format;
format = vsp1_entity_get_pad_format(&clu->entity,
clu->entity.config,
CLU_PAD_SINK);
clu->yuv_mode = format->code == MEDIA_BUS_FMT_AYUV8_1X32;
break;
}
case VSP1_ENTITY_PARAMS_PARTITION:
break;
case VSP1_ENTITY_PARAMS_RUNTIME:
/* 2D mode can only be used with the YCbCr pixel encoding. */
if (clu->mode == V4L2_CID_VSP1_CLU_MODE_2D && clu->yuv_mode)
ctrl |= VI6_CLU_CTRL_AX1I_2D | VI6_CLU_CTRL_AX2I_2D
| VI6_CLU_CTRL_OS0_2D | VI6_CLU_CTRL_OS1_2D
| VI6_CLU_CTRL_OS2_2D | VI6_CLU_CTRL_M2D;
vsp1_clu_write(clu, dl, VI6_CLU_CTRL, ctrl);
spin_lock_irqsave(&clu->lock, flags);
dlb = clu->clu;
clu->clu = NULL;
spin_unlock_irqrestore(&clu->lock, flags);
if (dlb)
vsp1_dl_list_add_fragment(dl, dlb);
break;
}
}
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static const struct vsp1_entity_operations clu_entity_ops = {
.configure = clu_configure,
};
/* -----------------------------------------------------------------------------
* Initialization and Cleanup
*/
struct vsp1_clu *vsp1_clu_create(struct vsp1_device *vsp1)
{
struct vsp1_clu *clu;
int ret;
clu = devm_kzalloc(vsp1->dev, sizeof(*clu), GFP_KERNEL);
if (clu == NULL)
return ERR_PTR(-ENOMEM);
spin_lock_init(&clu->lock);
clu->entity.ops = &clu_entity_ops;
clu->entity.type = VSP1_ENTITY_CLU;
ret = vsp1_entity_init(vsp1, &clu->entity, "clu", 2, &clu_ops,
MEDIA_ENT_F_PROC_VIDEO_LUT);
if (ret < 0)
return ERR_PTR(ret);
/* Initialize the control handler. */
v4l2_ctrl_handler_init(&clu->ctrls, 2);
v4l2_ctrl_new_custom(&clu->ctrls, &clu_table_control, NULL);
v4l2_ctrl_new_custom(&clu->ctrls, &clu_mode_control, NULL);
clu->entity.subdev.ctrl_handler = &clu->ctrls;
if (clu->ctrls.error) {
dev_err(vsp1->dev, "clu: failed to initialize controls\n");
ret = clu->ctrls.error;
vsp1_entity_destroy(&clu->entity);
return ERR_PTR(ret);
}
v4l2_ctrl_handler_setup(&clu->ctrls);
return clu;
}
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Overall Contributors
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| Laurent Pinchart | 1216 | 99.92% | 6 | 85.71% |
| Mauro Carvalho Chehab | 1 | 0.08% | 1 | 14.29% |
| Total | 1217 | 100.00% | 7 | 100.00% |
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