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|
// SPDX-License-Identifier: GPL-2.0
/*
* Support for Medifield PNW Camera Imaging ISP subsystem.
*
* Copyright (c) 2010 Intel Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
*/
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mediabus.h>
#include <media/videobuf2-vmalloc.h>
#include "atomisp_cmd.h"
#include "atomisp_common.h"
#include "atomisp_compat.h"
#include "atomisp_fops.h"
#include "atomisp_internal.h"
#include "atomisp_ioctl.h"
const struct atomisp_in_fmt_conv atomisp_in_fmt_conv[] = {
{ MEDIA_BUS_FMT_SBGGR8_1X8, 8, 8, ATOMISP_INPUT_FORMAT_RAW_8, IA_CSS_BAYER_ORDER_BGGR },
{ MEDIA_BUS_FMT_SGBRG8_1X8, 8, 8, ATOMISP_INPUT_FORMAT_RAW_8, IA_CSS_BAYER_ORDER_GBRG },
{ MEDIA_BUS_FMT_SGRBG8_1X8, 8, 8, ATOMISP_INPUT_FORMAT_RAW_8, IA_CSS_BAYER_ORDER_GRBG },
{ MEDIA_BUS_FMT_SRGGB8_1X8, 8, 8, ATOMISP_INPUT_FORMAT_RAW_8, IA_CSS_BAYER_ORDER_RGGB },
{ MEDIA_BUS_FMT_SBGGR10_1X10, 10, 10, ATOMISP_INPUT_FORMAT_RAW_10, IA_CSS_BAYER_ORDER_BGGR },
{ MEDIA_BUS_FMT_SGBRG10_1X10, 10, 10, ATOMISP_INPUT_FORMAT_RAW_10, IA_CSS_BAYER_ORDER_GBRG },
{ MEDIA_BUS_FMT_SGRBG10_1X10, 10, 10, ATOMISP_INPUT_FORMAT_RAW_10, IA_CSS_BAYER_ORDER_GRBG },
{ MEDIA_BUS_FMT_SRGGB10_1X10, 10, 10, ATOMISP_INPUT_FORMAT_RAW_10, IA_CSS_BAYER_ORDER_RGGB },
{ MEDIA_BUS_FMT_SBGGR12_1X12, 12, 12, ATOMISP_INPUT_FORMAT_RAW_12, IA_CSS_BAYER_ORDER_BGGR },
{ MEDIA_BUS_FMT_SGBRG12_1X12, 12, 12, ATOMISP_INPUT_FORMAT_RAW_12, IA_CSS_BAYER_ORDER_GBRG },
{ MEDIA_BUS_FMT_SGRBG12_1X12, 12, 12, ATOMISP_INPUT_FORMAT_RAW_12, IA_CSS_BAYER_ORDER_GRBG },
{ MEDIA_BUS_FMT_SRGGB12_1X12, 12, 12, ATOMISP_INPUT_FORMAT_RAW_12, IA_CSS_BAYER_ORDER_RGGB },
{ MEDIA_BUS_FMT_UYVY8_1X16, 8, 8, ATOMISP_INPUT_FORMAT_YUV422_8, 0 },
{ MEDIA_BUS_FMT_YUYV8_1X16, 8, 8, ATOMISP_INPUT_FORMAT_YUV422_8, 0 },
#if 0 // disabled due to clang warnings
{ MEDIA_BUS_FMT_JPEG_1X8, 8, 8, IA_CSS_FRAME_FORMAT_BINARY_8, 0 },
{ V4L2_MBUS_FMT_CUSTOM_NV12, 12, 12, IA_CSS_FRAME_FORMAT_NV12, 0 },
{ V4L2_MBUS_FMT_CUSTOM_NV21, 12, 12, IA_CSS_FRAME_FORMAT_NV21, 0 },
#endif
{ V4L2_MBUS_FMT_CUSTOM_YUV420, 12, 12, ATOMISP_INPUT_FORMAT_YUV420_8_LEGACY, 0 },
#if 0
{ V4L2_MBUS_FMT_CUSTOM_M10MO_RAW, 8, 8, IA_CSS_FRAME_FORMAT_BINARY_8, 0 },
#endif
/* no valid V4L2 MBUS code for metadata format, so leave it 0. */
{ 0, 0, 0, ATOMISP_INPUT_FORMAT_EMBEDDED, 0 },
{}
};
static const struct {
u32 code;
u32 compressed;
} compressed_codes[] = {
{ MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8 },
{ MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8 },
{ MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8 },
{ MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8 },
};
u32 atomisp_subdev_uncompressed_code(u32 code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(compressed_codes); i++)
if (code == compressed_codes[i].compressed)
return compressed_codes[i].code;
return code;
}
bool atomisp_subdev_is_compressed(u32 code)
{
int i;
for (i = 0; i < ARRAY_SIZE(atomisp_in_fmt_conv) - 1; i++)
if (code == atomisp_in_fmt_conv[i].code)
return atomisp_in_fmt_conv[i].bpp !=
atomisp_in_fmt_conv[i].depth;
return false;
}
const struct atomisp_in_fmt_conv *atomisp_find_in_fmt_conv(u32 code)
{
int i;
for (i = 0; i < ARRAY_SIZE(atomisp_in_fmt_conv) - 1; i++)
if (code == atomisp_in_fmt_conv[i].code)
return atomisp_in_fmt_conv + i;
return NULL;
}
const struct atomisp_in_fmt_conv *atomisp_find_in_fmt_conv_by_atomisp_in_fmt(
enum atomisp_input_format atomisp_in_fmt)
{
int i;
for (i = 0; i < ARRAY_SIZE(atomisp_in_fmt_conv) - 1; i++)
if (atomisp_in_fmt_conv[i].atomisp_in_fmt == atomisp_in_fmt)
return atomisp_in_fmt_conv + i;
return NULL;
}
bool atomisp_subdev_format_conversion(struct atomisp_sub_device *asd)
{
struct v4l2_mbus_framefmt *sink, *src;
sink = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
V4L2_SUBDEV_FORMAT_ACTIVE, ATOMISP_SUBDEV_PAD_SINK);
src = atomisp_subdev_get_ffmt(&asd->subdev, NULL,
V4L2_SUBDEV_FORMAT_ACTIVE, ATOMISP_SUBDEV_PAD_SOURCE);
return atomisp_is_mbuscode_raw(sink->code)
&& !atomisp_is_mbuscode_raw(src->code);
}
/*
* V4L2 subdev operations
*/
/*
* isp_subdev_ioctl - CCDC module private ioctl's
* @sd: ISP V4L2 subdevice
* @cmd: ioctl command
* @arg: ioctl argument
*
* Return 0 on success or a negative error code otherwise.
*/
static long isp_subdev_ioctl(struct v4l2_subdev *sd,
unsigned int cmd, void *arg)
{
return 0;
}
/*
* isp_subdev_set_power - Power on/off the CCDC module
* @sd: ISP V4L2 subdevice
* @on: power on/off
*
* Return 0 on success or a negative error code otherwise.
*/
static int isp_subdev_set_power(struct v4l2_subdev *sd, int on)
{
return 0;
}
static int isp_subdev_subscribe_event(struct v4l2_subdev *sd,
struct v4l2_fh *fh,
struct v4l2_event_subscription *sub)
{
struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
struct atomisp_device *isp = isp_sd->isp;
if (sub->type != V4L2_EVENT_FRAME_SYNC &&
sub->type != V4L2_EVENT_FRAME_END &&
sub->type != V4L2_EVENT_ATOMISP_3A_STATS_READY &&
sub->type != V4L2_EVENT_ATOMISP_METADATA_READY &&
sub->type != V4L2_EVENT_ATOMISP_PAUSE_BUFFER &&
sub->type != V4L2_EVENT_ATOMISP_CSS_RESET &&
sub->type != V4L2_EVENT_ATOMISP_ACC_COMPLETE)
return -EINVAL;
if (sub->type == V4L2_EVENT_FRAME_SYNC &&
!atomisp_css_valid_sof(isp))
return -EINVAL;
return v4l2_event_subscribe(fh, sub, 16, NULL);
}
static int isp_subdev_unsubscribe_event(struct v4l2_subdev *sd,
struct v4l2_fh *fh,
struct v4l2_event_subscription *sub)
{
return v4l2_event_unsubscribe(fh, sub);
}
/*
* isp_subdev_enum_mbus_code - Handle pixel format enumeration
* @sd: pointer to v4l2 subdev structure
* @fh : V4L2 subdev file handle
* @code: pointer to v4l2_subdev_pad_mbus_code_enum structure
* return -EINVAL or zero on success
*/
static int isp_subdev_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index >= ARRAY_SIZE(atomisp_in_fmt_conv) - 1)
return -EINVAL;
code->code = atomisp_in_fmt_conv[code->index].code;
return 0;
}
static int isp_subdev_validate_rect(struct v4l2_subdev *sd, uint32_t pad,
uint32_t target)
{
switch (pad) {
case ATOMISP_SUBDEV_PAD_SINK:
switch (target) {
case V4L2_SEL_TGT_CROP:
return 0;
}
break;
default:
switch (target) {
case V4L2_SEL_TGT_COMPOSE:
return 0;
}
break;
}
return -EINVAL;
}
struct v4l2_rect *atomisp_subdev_get_rect(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
u32 which, uint32_t pad,
uint32_t target)
{
struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
if (which == V4L2_SUBDEV_FORMAT_TRY) {
switch (target) {
case V4L2_SEL_TGT_CROP:
return v4l2_subdev_state_get_crop(sd_state, pad);
case V4L2_SEL_TGT_COMPOSE:
return v4l2_subdev_state_get_compose(sd_state, pad);
}
}
switch (target) {
case V4L2_SEL_TGT_CROP:
return &isp_sd->fmt[pad].crop;
case V4L2_SEL_TGT_COMPOSE:
return &isp_sd->fmt[pad].compose;
}
return NULL;
}
struct v4l2_mbus_framefmt
*atomisp_subdev_get_ffmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state, uint32_t which,
uint32_t pad)
{
struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_state_get_format(sd_state, pad);
return &isp_sd->fmt[pad].fmt;
}
static void isp_get_fmt_rect(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
uint32_t which,
struct v4l2_mbus_framefmt **ffmt,
struct v4l2_rect *crop[ATOMISP_SUBDEV_PADS_NUM],
struct v4l2_rect *comp[ATOMISP_SUBDEV_PADS_NUM])
{
unsigned int i;
for (i = 0; i < ATOMISP_SUBDEV_PADS_NUM; i++) {
ffmt[i] = atomisp_subdev_get_ffmt(sd, sd_state, which, i);
crop[i] = atomisp_subdev_get_rect(sd, sd_state, which, i,
V4L2_SEL_TGT_CROP);
comp[i] = atomisp_subdev_get_rect(sd, sd_state, which, i,
V4L2_SEL_TGT_COMPOSE);
}
}
static int isp_subdev_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct v4l2_rect *rec;
int rval = isp_subdev_validate_rect(sd, sel->pad, sel->target);
if (rval)
return rval;
rec = atomisp_subdev_get_rect(sd, sd_state, sel->which, sel->pad,
sel->target);
if (!rec)
return -EINVAL;
sel->r = *rec;
return 0;
}
static const char *atomisp_pad_str(unsigned int pad)
{
static const char *const pad_str[] = {
"ATOMISP_SUBDEV_PAD_SINK",
"ATOMISP_SUBDEV_PAD_SOURCE",
};
if (pad >= ARRAY_SIZE(pad_str))
return "ATOMISP_INVALID_PAD";
return pad_str[pad];
}
int atomisp_subdev_set_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
u32 which, uint32_t pad, uint32_t target,
u32 flags, struct v4l2_rect *r)
{
struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
struct atomisp_device *isp = isp_sd->isp;
struct v4l2_mbus_framefmt *ffmt[ATOMISP_SUBDEV_PADS_NUM];
struct v4l2_rect *crop[ATOMISP_SUBDEV_PADS_NUM],
*comp[ATOMISP_SUBDEV_PADS_NUM];
if ((pad == ATOMISP_SUBDEV_PAD_SINK && target != V4L2_SEL_TGT_CROP) ||
(pad == ATOMISP_SUBDEV_PAD_SOURCE && target != V4L2_SEL_TGT_COMPOSE))
return -EINVAL;
isp_get_fmt_rect(sd, sd_state, which, ffmt, crop, comp);
dev_dbg(isp->dev,
"sel: pad %s tgt %s l %d t %d w %d h %d which %s f 0x%8.8x\n",
atomisp_pad_str(pad), target == V4L2_SEL_TGT_CROP
? "V4L2_SEL_TGT_CROP" : "V4L2_SEL_TGT_COMPOSE",
r->left, r->top, r->width, r->height,
which == V4L2_SUBDEV_FORMAT_TRY ? "V4L2_SUBDEV_FORMAT_TRY"
: "V4L2_SUBDEV_FORMAT_ACTIVE", flags);
r->width = rounddown(r->width, ATOM_ISP_STEP_WIDTH);
r->height = rounddown(r->height, ATOM_ISP_STEP_HEIGHT);
if (pad == ATOMISP_SUBDEV_PAD_SINK) {
/* Only crop target supported on sink pad. */
unsigned int dvs_w, dvs_h;
crop[pad]->width = ffmt[pad]->width;
crop[pad]->height = ffmt[pad]->height;
if (atomisp_subdev_format_conversion(isp_sd)
&& crop[pad]->width && crop[pad]->height) {
crop[pad]->width -= isp_sd->sink_pad_padding_w;
crop[pad]->height -= isp_sd->sink_pad_padding_h;
}
if (isp_sd->params.video_dis_en &&
isp_sd->run_mode->val == ATOMISP_RUN_MODE_VIDEO) {
/*
* This resolution contains 20 % of DVS slack
* (of the desired captured image before
* scaling, or 1 / 6 of what we get from the
* sensor) in both width and height. Remove it.
*/
crop[pad]->width = roundup(crop[pad]->width * 5 / 6,
ATOM_ISP_STEP_WIDTH);
crop[pad]->height = roundup(crop[pad]->height * 5 / 6,
ATOM_ISP_STEP_HEIGHT);
}
crop[pad]->width = min(crop[pad]->width, r->width);
crop[pad]->height = min(crop[pad]->height, r->height);
if (!(flags & V4L2_SEL_FLAG_KEEP_CONFIG)) {
struct v4l2_rect tmp = *crop[pad];
atomisp_subdev_set_selection(sd, sd_state, which,
ATOMISP_SUBDEV_PAD_SOURCE,
V4L2_SEL_TGT_COMPOSE, flags, &tmp);
}
if (which == V4L2_SUBDEV_FORMAT_TRY)
goto get_rect;
if (isp_sd->params.video_dis_en &&
isp_sd->run_mode->val == ATOMISP_RUN_MODE_VIDEO) {
dvs_w = rounddown(crop[pad]->width / 5,
ATOM_ISP_STEP_WIDTH);
dvs_h = rounddown(crop[pad]->height / 5,
ATOM_ISP_STEP_HEIGHT);
} else if (!isp_sd->params.video_dis_en &&
isp_sd->run_mode->val == ATOMISP_RUN_MODE_VIDEO) {
/*
* For CSS2.0, digital zoom needs to set dvs envelope to 12
* when dvs is disabled.
*/
dvs_w = dvs_h = 12;
} else {
dvs_w = dvs_h = 0;
}
atomisp_css_video_set_dis_envelope(isp_sd, dvs_w, dvs_h);
atomisp_css_input_set_effective_resolution(isp_sd,
ATOMISP_INPUT_STREAM_GENERAL,
crop[pad]->width,
crop[pad]->height);
} else if (isp_sd->run_mode->val != ATOMISP_RUN_MODE_PREVIEW) {
/* Only compose target is supported on source pads. */
if (isp_sd->vfpp->val == ATOMISP_VFPP_DISABLE_LOWLAT) {
/* Scaling is disabled in this mode */
r->width = crop[ATOMISP_SUBDEV_PAD_SINK]->width;
r->height = crop[ATOMISP_SUBDEV_PAD_SINK]->height;
}
if (crop[ATOMISP_SUBDEV_PAD_SINK]->width == r->width
&& crop[ATOMISP_SUBDEV_PAD_SINK]->height == r->height)
isp_sd->params.yuv_ds_en = false;
else
isp_sd->params.yuv_ds_en = true;
comp[pad]->width = r->width;
comp[pad]->height = r->height;
if (r->width == 0 || r->height == 0 ||
crop[ATOMISP_SUBDEV_PAD_SINK]->width == 0 ||
crop[ATOMISP_SUBDEV_PAD_SINK]->height == 0)
goto get_rect;
/*
* do cropping on sensor input if ratio of required resolution
* is different with sensor output resolution ratio:
*
* ratio = width / height
*
* if ratio_output < ratio_sensor:
* effect_width = sensor_height * out_width / out_height;
* effect_height = sensor_height;
* else
* effect_width = sensor_width;
* effect_height = sensor_width * out_height / out_width;
*
*/
if (r->width * crop[ATOMISP_SUBDEV_PAD_SINK]->height <
crop[ATOMISP_SUBDEV_PAD_SINK]->width * r->height)
atomisp_css_input_set_effective_resolution(isp_sd,
ATOMISP_INPUT_STREAM_GENERAL,
rounddown(crop[ATOMISP_SUBDEV_PAD_SINK]->
height * r->width / r->height,
ATOM_ISP_STEP_WIDTH),
crop[ATOMISP_SUBDEV_PAD_SINK]->height);
else
atomisp_css_input_set_effective_resolution(isp_sd,
ATOMISP_INPUT_STREAM_GENERAL,
crop[ATOMISP_SUBDEV_PAD_SINK]->width,
rounddown(crop[ATOMISP_SUBDEV_PAD_SINK]->
width * r->height / r->width,
ATOM_ISP_STEP_WIDTH));
} else {
comp[pad]->width = r->width;
comp[pad]->height = r->height;
}
get_rect:
/* Set format dimensions on non-sink pads as well. */
if (pad != ATOMISP_SUBDEV_PAD_SINK) {
ffmt[pad]->width = comp[pad]->width;
ffmt[pad]->height = comp[pad]->height;
}
if (!atomisp_subdev_get_rect(sd, sd_state, which, pad, target))
return -EINVAL;
*r = *atomisp_subdev_get_rect(sd, sd_state, which, pad, target);
dev_dbg(isp->dev, "sel actual: l %d t %d w %d h %d\n",
r->left, r->top, r->width, r->height);
return 0;
}
static int isp_subdev_set_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
int rval = isp_subdev_validate_rect(sd, sel->pad, sel->target);
if (rval)
return rval;
return atomisp_subdev_set_selection(sd, sd_state, sel->which,
sel->pad,
sel->target, sel->flags, &sel->r);
}
void atomisp_subdev_set_ffmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
uint32_t which,
u32 pad, struct v4l2_mbus_framefmt *ffmt)
{
struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
struct atomisp_device *isp = isp_sd->isp;
struct v4l2_mbus_framefmt *__ffmt =
atomisp_subdev_get_ffmt(sd, sd_state, which, pad);
dev_dbg(isp->dev, "ffmt: pad %s w %d h %d code 0x%8.8x which %s\n",
atomisp_pad_str(pad), ffmt->width, ffmt->height, ffmt->code,
which == V4L2_SUBDEV_FORMAT_TRY ? "V4L2_SUBDEV_FORMAT_TRY"
: "V4L2_SUBDEV_FORMAT_ACTIVE");
switch (pad) {
case ATOMISP_SUBDEV_PAD_SINK: {
const struct atomisp_in_fmt_conv *fc =
atomisp_find_in_fmt_conv(ffmt->code);
struct v4l2_rect r = {};
if (!fc) {
fc = atomisp_in_fmt_conv;
ffmt->code = fc->code;
dev_dbg(isp->dev, "using 0x%8.8x instead\n",
ffmt->code);
}
*__ffmt = *ffmt;
/* Propagate new ffmt to selection */
r.width = ffmt->width;
r.height = ffmt->height;
/* Only crop target supported on sink pad. */
atomisp_subdev_set_selection(sd, sd_state, which, pad,
V4L2_SEL_TGT_CROP, 0, &r);
if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
atomisp_css_input_set_resolution(isp_sd,
ATOMISP_INPUT_STREAM_GENERAL, ffmt);
atomisp_css_input_set_binning_factor(isp_sd,
ATOMISP_INPUT_STREAM_GENERAL,
0);
atomisp_css_input_set_bayer_order(isp_sd, ATOMISP_INPUT_STREAM_GENERAL,
fc->bayer_order);
atomisp_css_input_set_format(isp_sd, ATOMISP_INPUT_STREAM_GENERAL,
fc->atomisp_in_fmt);
atomisp_css_set_default_isys_config(isp_sd, ATOMISP_INPUT_STREAM_GENERAL,
ffmt);
}
break;
}
case ATOMISP_SUBDEV_PAD_SOURCE:
__ffmt->code = ffmt->code;
break;
}
}
/*
* isp_subdev_get_format - Retrieve the video format on a pad
* @sd : ISP V4L2 subdevice
* @fh : V4L2 subdev file handle
* @pad: Pad number
* @fmt: Format
*
* Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
* to the format type.
*/
static int isp_subdev_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
fmt->format = *atomisp_subdev_get_ffmt(sd, sd_state, fmt->which,
fmt->pad);
return 0;
}
/*
* isp_subdev_set_format - Set the video format on a pad
* @sd : ISP subdev V4L2 subdevice
* @fh : V4L2 subdev file handle
* @pad: Pad number
* @fmt: Format
*
* Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
* to the format type.
*/
static int isp_subdev_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
atomisp_subdev_set_ffmt(sd, sd_state, fmt->which, fmt->pad,
&fmt->format);
return 0;
}
/* V4L2 subdev core operations */
static const struct v4l2_subdev_core_ops isp_subdev_v4l2_core_ops = {
.ioctl = isp_subdev_ioctl, .s_power = isp_subdev_set_power,
.subscribe_event = isp_subdev_subscribe_event,
.unsubscribe_event = isp_subdev_unsubscribe_event,
};
/* V4L2 subdev pad operations */
static const struct v4l2_subdev_pad_ops isp_subdev_v4l2_pad_ops = {
.enum_mbus_code = isp_subdev_enum_mbus_code,
.get_fmt = isp_subdev_get_format,
.set_fmt = isp_subdev_set_format,
.get_selection = isp_subdev_get_selection,
.set_selection = isp_subdev_set_selection,
.link_validate = v4l2_subdev_link_validate_default,
};
/* V4L2 subdev operations */
static const struct v4l2_subdev_ops isp_subdev_v4l2_ops = {
.core = &isp_subdev_v4l2_core_ops,
.pad = &isp_subdev_v4l2_pad_ops,
};
static void isp_subdev_init_params(struct atomisp_sub_device *asd)
{
unsigned int i;
/* parameters initialization */
INIT_LIST_HEAD(&asd->s3a_stats);
INIT_LIST_HEAD(&asd->s3a_stats_in_css);
INIT_LIST_HEAD(&asd->s3a_stats_ready);
INIT_LIST_HEAD(&asd->dis_stats);
INIT_LIST_HEAD(&asd->dis_stats_in_css);
spin_lock_init(&asd->dis_stats_lock);
for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
INIT_LIST_HEAD(&asd->metadata[i]);
INIT_LIST_HEAD(&asd->metadata_in_css[i]);
INIT_LIST_HEAD(&asd->metadata_ready[i]);
}
}
/* media operations */
static int atomisp_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = container_of(entity, struct v4l2_subdev,
entity);
struct atomisp_sub_device *asd = v4l2_get_subdevdata(sd);
struct atomisp_device *isp = asd->isp;
int i, ret;
/* ISP's source is immutable */
if (local != &asd->pads[ATOMISP_SUBDEV_PAD_SINK]) {
v4l2_err(sd, "Error pad %d does not support changing flags\n",
local->index);
return -EINVAL;
}
for (i = 0; i < isp->input_cnt; i++) {
if (&isp->inputs[i].csi_port->entity.pads[CSI2_PAD_SOURCE] == remote)
break;
}
if (i == isp->input_cnt) {
v4l2_err(sd, "Error no sensor for selected CSI receiver\n");
return -EINVAL;
}
mutex_lock(&isp->mutex);
ret = atomisp_pipe_check(&asd->video_out, true);
mutex_unlock(&isp->mutex);
if (ret)
return ret;
/* Turn off the sensor on link disable */
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
atomisp_s_sensor_power(isp, i, 0);
return 0;
}
return atomisp_select_input(isp, i);
}
static const struct media_entity_operations isp_subdev_media_ops = {
.link_validate = v4l2_subdev_link_validate,
.link_setup = atomisp_link_setup,
/* .set_power = v4l2_subdev_set_power, */
};
static const char *const ctrl_run_mode_menu[] = {
[ATOMISP_RUN_MODE_VIDEO] = "Video",
[ATOMISP_RUN_MODE_STILL_CAPTURE] = "Still capture",
[ATOMISP_RUN_MODE_PREVIEW] = "Preview",
};
static const struct v4l2_ctrl_config ctrl_run_mode = {
.id = V4L2_CID_RUN_MODE,
.name = "Atomisp run mode",
.type = V4L2_CTRL_TYPE_MENU,
.min = ATOMISP_RUN_MODE_MIN,
.def = ATOMISP_RUN_MODE_PREVIEW,
.max = ATOMISP_RUN_MODE_MAX,
.qmenu = ctrl_run_mode_menu,
};
static const char *const ctrl_vfpp_mode_menu[] = {
"Enable", /* vfpp always enabled */
"Disable to scaler mode", /* CSS into video mode and disable */
"Disable to low latency mode", /* CSS into still mode and disable */
};
static const struct v4l2_ctrl_config ctrl_vfpp = {
.id = V4L2_CID_VFPP,
.name = "Atomisp vf postprocess",
.type = V4L2_CTRL_TYPE_MENU,
.min = 0,
.def = 0,
.max = 2,
.qmenu = ctrl_vfpp_mode_menu,
};
/*
* Control for continuous mode raw buffer size
*
* The size of the RAW ringbuffer sets limit on how much
* back in time application can go when requesting capture
* frames to be rendered, and how many frames can be rendered
* in a burst at full sensor rate.
*
* Note: this setting has a big impact on memory consumption of
* the CSS subsystem.
*/
static const struct v4l2_ctrl_config ctrl_continuous_raw_buffer_size = {
.id = V4L2_CID_ATOMISP_CONTINUOUS_RAW_BUFFER_SIZE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Continuous raw ringbuffer size",
.min = 1,
.max = 100, /* depends on CSS version, runtime checked */
.step = 1,
.def = 3,
};
/*
* Control for enabling continuous viewfinder
*
* When enabled, and ISP is in continuous mode (see ctrl_continuous_mode ),
* preview pipeline continues concurrently with capture
* processing. When disabled, and continuous mode is used,
* preview is paused while captures are processed, but
* full pipeline restart is not needed.
*
* By setting this to disabled, capture processing is
* essentially given priority over preview, and the effective
* capture output rate may be higher than with continuous
* viewfinder enabled.
*/
static const struct v4l2_ctrl_config ctrl_continuous_viewfinder = {
.id = V4L2_CID_ATOMISP_CONTINUOUS_VIEWFINDER,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Continuous viewfinder",
.min = 0,
.max = 1,
.step = 1,
.def = 0,
};
/*
* Control for enabling Lock&Unlock Raw Buffer mechanism
*
* When enabled, Raw Buffer can be locked and unlocked.
* Application can hold the exp_id of Raw Buffer
* and unlock it when no longer needed.
* Note: Make sure set this configuration before creating stream.
*/
static const struct v4l2_ctrl_config ctrl_enable_raw_buffer_lock = {
.id = V4L2_CID_ENABLE_RAW_BUFFER_LOCK,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Lock Unlock Raw Buffer",
.min = 0,
.max = 1,
.step = 1,
.def = 0,
};
/*
* Control to disable digital zoom of the whole stream
*
* When it is true, pipe configuration enable_dz will be set to false.
* This can help get a better performance by disabling pp binary.
*
* Note: Make sure set this configuration before creating stream.
*/
static const struct v4l2_ctrl_config ctrl_disable_dz = {
.id = V4L2_CID_DISABLE_DZ,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Disable digital zoom",
.min = 0,
.max = 1,
.step = 1,
.def = 0,
};
static int atomisp_init_subdev_pipe(struct atomisp_sub_device *asd,
struct atomisp_video_pipe *pipe, enum v4l2_buf_type buf_type)
{
int ret;
pipe->type = buf_type;
pipe->asd = asd;
pipe->isp = asd->isp;
spin_lock_init(&pipe->irq_lock);
mutex_init(&pipe->vb_queue_mutex);
/* Init videobuf2 queue structure */
pipe->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
pipe->vb_queue.io_modes = VB2_MMAP | VB2_DMABUF;
pipe->vb_queue.buf_struct_size = sizeof(struct ia_css_frame);
pipe->vb_queue.ops = &atomisp_vb2_ops;
pipe->vb_queue.mem_ops = &vb2_vmalloc_memops;
pipe->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
ret = vb2_queue_init(&pipe->vb_queue);
if (ret)
return ret;
pipe->vdev.queue = &pipe->vb_queue;
pipe->vdev.queue->lock = &pipe->vb_queue_mutex;
INIT_LIST_HEAD(&pipe->buffers_in_css);
INIT_LIST_HEAD(&pipe->activeq);
INIT_LIST_HEAD(&pipe->buffers_waiting_for_param);
INIT_LIST_HEAD(&pipe->per_frame_params);
return 0;
}
/*
* isp_subdev_init_entities - Initialize V4L2 subdev and media entity
* @asd: ISP CCDC module
*
* Return 0 on success and a negative error code on failure.
*/
static int isp_subdev_init_entities(struct atomisp_sub_device *asd)
{
struct v4l2_subdev *sd = &asd->subdev;
struct media_pad *pads = asd->pads;
struct media_entity *me = &sd->entity;
int ret;
v4l2_subdev_init(sd, &isp_subdev_v4l2_ops);
sprintf(sd->name, "Atom ISP");
v4l2_set_subdevdata(sd, asd);
sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
pads[ATOMISP_SUBDEV_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
pads[ATOMISP_SUBDEV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
asd->fmt[ATOMISP_SUBDEV_PAD_SINK].fmt.code = MEDIA_BUS_FMT_SBGGR10_1X10;
asd->fmt[ATOMISP_SUBDEV_PAD_SOURCE].fmt.code = MEDIA_BUS_FMT_SBGGR10_1X10;
me->ops = &isp_subdev_media_ops;
me->function = MEDIA_ENT_F_PROC_VIDEO_ISP;
ret = media_entity_pads_init(me, ATOMISP_SUBDEV_PADS_NUM, pads);
if (ret < 0)
return ret;
ret = atomisp_init_subdev_pipe(asd, &asd->video_out, V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (ret)
return ret;
ret = atomisp_video_init(&asd->video_out);
if (ret < 0)
return ret;
ret = v4l2_ctrl_handler_init(&asd->ctrl_handler, 1);
if (ret)
return ret;
asd->run_mode = v4l2_ctrl_new_custom(&asd->ctrl_handler,
&ctrl_run_mode, NULL);
asd->vfpp = v4l2_ctrl_new_custom(&asd->ctrl_handler,
&ctrl_vfpp, NULL);
asd->continuous_viewfinder = v4l2_ctrl_new_custom(&asd->ctrl_handler,
&ctrl_continuous_viewfinder,
NULL);
asd->continuous_raw_buffer_size =
v4l2_ctrl_new_custom(&asd->ctrl_handler,
&ctrl_continuous_raw_buffer_size,
NULL);
asd->enable_raw_buffer_lock =
v4l2_ctrl_new_custom(&asd->ctrl_handler,
&ctrl_enable_raw_buffer_lock,
NULL);
asd->disable_dz =
v4l2_ctrl_new_custom(&asd->ctrl_handler,
&ctrl_disable_dz,
NULL);
/* Make controls visible on subdev as well. */
asd->subdev.ctrl_handler = &asd->ctrl_handler;
spin_lock_init(&asd->raw_buffer_bitmap_lock);
return asd->ctrl_handler.error;
}
static void atomisp_subdev_cleanup_entities(struct atomisp_sub_device *asd)
{
v4l2_ctrl_handler_free(&asd->ctrl_handler);
media_entity_cleanup(&asd->subdev.entity);
}
void atomisp_subdev_cleanup_pending_events(struct atomisp_sub_device *asd)
{
struct v4l2_fh *fh, *fh_tmp;
struct v4l2_event event;
unsigned int i, pending_event;
list_for_each_entry_safe(fh, fh_tmp,
&asd->subdev.devnode->fh_list, list) {
pending_event = v4l2_event_pending(fh);
for (i = 0; i < pending_event; i++)
v4l2_event_dequeue(fh, &event, 1);
}
}
void atomisp_subdev_unregister_entities(struct atomisp_sub_device *asd)
{
atomisp_subdev_cleanup_entities(asd);
v4l2_device_unregister_subdev(&asd->subdev);
atomisp_video_unregister(&asd->video_out);
}
int atomisp_subdev_register_subdev(struct atomisp_sub_device *asd,
struct v4l2_device *vdev)
{
return v4l2_device_register_subdev(vdev, &asd->subdev);
}
/*
* atomisp_subdev_init - ISP Subdevice initialization.
* @dev: Device pointer specific to the ATOM ISP.
*
* TODO: Get the initialisation values from platform data.
*
* Return 0 on success or a negative error code otherwise.
*/
int atomisp_subdev_init(struct atomisp_device *isp)
{
int ret;
isp->asd.isp = isp;
isp_subdev_init_params(&isp->asd);
ret = isp_subdev_init_entities(&isp->asd);
if (ret < 0)
atomisp_subdev_cleanup_entities(&isp->asd);
return ret;
}
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