forked from Minki/linux
20fab5e086
Allow reconfiguration of the look-up table and processing mode at runtime. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
293 lines
7.4 KiB
C
293 lines
7.4 KiB
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);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* 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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
|
|
config = vsp1_entity_get_pad_config(&clu->entity, cfg, fmt->which);
|
|
if (!config)
|
|
return -EINVAL;
|
|
|
|
/* 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;
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* 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, bool full)
|
|
{
|
|
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;
|
|
|
|
/* The format can't be changed during streaming, only verify it at
|
|
* stream start and store the information internally for future partial
|
|
* reconfiguration calls.
|
|
*/
|
|
if (full) {
|
|
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;
|
|
return;
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
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;
|
|
}
|