// SPDX-License-Identifier: GPL-2.0+
|
/*
|
* vsp1_hgo.c -- R-Car VSP1 Histogram Generator 1D
|
*
|
* Copyright (C) 2016 Renesas Electronics Corporation
|
*
|
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
|
*/
|
|
#include <linux/device.h>
|
#include <linux/gfp.h>
|
|
#include <media/v4l2-subdev.h>
|
#include <media/videobuf2-vmalloc.h>
|
|
#include "vsp1.h"
|
#include "vsp1_dl.h"
|
#include "vsp1_hgo.h"
|
|
#define HGO_DATA_SIZE ((2 + 256) * 4)
|
|
/* -----------------------------------------------------------------------------
|
* Device Access
|
*/
|
|
static inline u32 vsp1_hgo_read(struct vsp1_hgo *hgo, u32 reg)
|
{
|
return vsp1_read(hgo->histo.entity.vsp1, reg);
|
}
|
|
static inline void vsp1_hgo_write(struct vsp1_hgo *hgo,
|
struct vsp1_dl_body *dlb, u32 reg, u32 data)
|
{
|
vsp1_dl_body_write(dlb, reg, data);
|
}
|
|
/* -----------------------------------------------------------------------------
|
* Frame End Handler
|
*/
|
|
void vsp1_hgo_frame_end(struct vsp1_entity *entity)
|
{
|
struct vsp1_hgo *hgo = to_hgo(&entity->subdev);
|
struct vsp1_histogram_buffer *buf;
|
unsigned int i;
|
size_t size;
|
u32 *data;
|
|
buf = vsp1_histogram_buffer_get(&hgo->histo);
|
if (!buf)
|
return;
|
|
data = buf->addr;
|
|
if (hgo->num_bins == 256) {
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_G_MAXMIN);
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_G_SUM);
|
|
for (i = 0; i < 256; ++i) {
|
vsp1_write(hgo->histo.entity.vsp1,
|
VI6_HGO_EXT_HIST_ADDR, i);
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_EXT_HIST_DATA);
|
}
|
|
size = (2 + 256) * sizeof(u32);
|
} else if (hgo->max_rgb) {
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_G_MAXMIN);
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_G_SUM);
|
|
for (i = 0; i < 64; ++i)
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_G_HISTO(i));
|
|
size = (2 + 64) * sizeof(u32);
|
} else {
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_R_MAXMIN);
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_G_MAXMIN);
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_B_MAXMIN);
|
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_R_SUM);
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_G_SUM);
|
*data++ = vsp1_hgo_read(hgo, VI6_HGO_B_SUM);
|
|
for (i = 0; i < 64; ++i) {
|
data[i] = vsp1_hgo_read(hgo, VI6_HGO_R_HISTO(i));
|
data[i+64] = vsp1_hgo_read(hgo, VI6_HGO_G_HISTO(i));
|
data[i+128] = vsp1_hgo_read(hgo, VI6_HGO_B_HISTO(i));
|
}
|
|
size = (6 + 64 * 3) * sizeof(u32);
|
}
|
|
vsp1_histogram_buffer_complete(&hgo->histo, buf, size);
|
}
|
|
/* -----------------------------------------------------------------------------
|
* Controls
|
*/
|
|
#define V4L2_CID_VSP1_HGO_MAX_RGB (V4L2_CID_USER_BASE | 0x1001)
|
#define V4L2_CID_VSP1_HGO_NUM_BINS (V4L2_CID_USER_BASE | 0x1002)
|
|
static const struct v4l2_ctrl_config hgo_max_rgb_control = {
|
.id = V4L2_CID_VSP1_HGO_MAX_RGB,
|
.name = "Maximum RGB Mode",
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
.min = 0,
|
.max = 1,
|
.def = 0,
|
.step = 1,
|
.flags = V4L2_CTRL_FLAG_MODIFY_LAYOUT,
|
};
|
|
static const s64 hgo_num_bins[] = {
|
64, 256,
|
};
|
|
static const struct v4l2_ctrl_config hgo_num_bins_control = {
|
.id = V4L2_CID_VSP1_HGO_NUM_BINS,
|
.name = "Number of Bins",
|
.type = V4L2_CTRL_TYPE_INTEGER_MENU,
|
.min = 0,
|
.max = 1,
|
.def = 0,
|
.qmenu_int = hgo_num_bins,
|
.flags = V4L2_CTRL_FLAG_MODIFY_LAYOUT,
|
};
|
|
/* -----------------------------------------------------------------------------
|
* VSP1 Entity Operations
|
*/
|
|
static void hgo_configure_stream(struct vsp1_entity *entity,
|
struct vsp1_pipeline *pipe,
|
struct vsp1_dl_list *dl,
|
struct vsp1_dl_body *dlb)
|
{
|
struct vsp1_hgo *hgo = to_hgo(&entity->subdev);
|
struct v4l2_rect *compose;
|
struct v4l2_rect *crop;
|
unsigned int hratio;
|
unsigned int vratio;
|
|
crop = vsp1_entity_get_pad_selection(entity, entity->config,
|
HISTO_PAD_SINK, V4L2_SEL_TGT_CROP);
|
compose = vsp1_entity_get_pad_selection(entity, entity->config,
|
HISTO_PAD_SINK,
|
V4L2_SEL_TGT_COMPOSE);
|
|
vsp1_hgo_write(hgo, dlb, VI6_HGO_REGRST, VI6_HGO_REGRST_RCLEA);
|
|
vsp1_hgo_write(hgo, dlb, VI6_HGO_OFFSET,
|
(crop->left << VI6_HGO_OFFSET_HOFFSET_SHIFT) |
|
(crop->top << VI6_HGO_OFFSET_VOFFSET_SHIFT));
|
vsp1_hgo_write(hgo, dlb, VI6_HGO_SIZE,
|
(crop->width << VI6_HGO_SIZE_HSIZE_SHIFT) |
|
(crop->height << VI6_HGO_SIZE_VSIZE_SHIFT));
|
|
mutex_lock(hgo->ctrls.handler.lock);
|
hgo->max_rgb = hgo->ctrls.max_rgb->cur.val;
|
if (hgo->ctrls.num_bins)
|
hgo->num_bins = hgo_num_bins[hgo->ctrls.num_bins->cur.val];
|
mutex_unlock(hgo->ctrls.handler.lock);
|
|
hratio = crop->width * 2 / compose->width / 3;
|
vratio = crop->height * 2 / compose->height / 3;
|
vsp1_hgo_write(hgo, dlb, VI6_HGO_MODE,
|
(hgo->num_bins == 256 ? VI6_HGO_MODE_STEP : 0) |
|
(hgo->max_rgb ? VI6_HGO_MODE_MAXRGB : 0) |
|
(hratio << VI6_HGO_MODE_HRATIO_SHIFT) |
|
(vratio << VI6_HGO_MODE_VRATIO_SHIFT));
|
}
|
|
static const struct vsp1_entity_operations hgo_entity_ops = {
|
.configure_stream = hgo_configure_stream,
|
.destroy = vsp1_histogram_destroy,
|
};
|
|
/* -----------------------------------------------------------------------------
|
* Initialization and Cleanup
|
*/
|
|
static const unsigned int hgo_mbus_formats[] = {
|
MEDIA_BUS_FMT_AYUV8_1X32,
|
MEDIA_BUS_FMT_ARGB8888_1X32,
|
MEDIA_BUS_FMT_AHSV8888_1X32,
|
};
|
|
struct vsp1_hgo *vsp1_hgo_create(struct vsp1_device *vsp1)
|
{
|
struct vsp1_hgo *hgo;
|
int ret;
|
|
hgo = devm_kzalloc(vsp1->dev, sizeof(*hgo), GFP_KERNEL);
|
if (hgo == NULL)
|
return ERR_PTR(-ENOMEM);
|
|
/* Initialize the control handler. */
|
v4l2_ctrl_handler_init(&hgo->ctrls.handler,
|
vsp1->info->gen == 3 ? 2 : 1);
|
hgo->ctrls.max_rgb = v4l2_ctrl_new_custom(&hgo->ctrls.handler,
|
&hgo_max_rgb_control, NULL);
|
if (vsp1->info->gen == 3)
|
hgo->ctrls.num_bins =
|
v4l2_ctrl_new_custom(&hgo->ctrls.handler,
|
&hgo_num_bins_control, NULL);
|
|
hgo->max_rgb = false;
|
hgo->num_bins = 64;
|
|
hgo->histo.entity.subdev.ctrl_handler = &hgo->ctrls.handler;
|
|
/* Initialize the video device and queue for statistics data. */
|
ret = vsp1_histogram_init(vsp1, &hgo->histo, VSP1_ENTITY_HGO, "hgo",
|
&hgo_entity_ops, hgo_mbus_formats,
|
ARRAY_SIZE(hgo_mbus_formats),
|
HGO_DATA_SIZE, V4L2_META_FMT_VSP1_HGO);
|
if (ret < 0) {
|
vsp1_entity_destroy(&hgo->histo.entity);
|
return ERR_PTR(ret);
|
}
|
|
return hgo;
|
}
|
