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media: ti-vpe: cal: Split video node handling to cal-video.c

Browse Source 
To prepare for implementation of media controller centric device
configuration, move all the video node handling support to a separate
file.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Laurent Pinchart 2020-07-06 20:36:43 +02:00 committed by Mauro Carvalho Chehab
parent f4d9837d87
commit 9d55189147
4 changed files with 1137 additions and 1063 deletions
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2
drivers/media/platform/ti-vpe/Makefile
View File

@ -13,4 +13,4 @@ ccflags-$(CONFIG_VIDEO_TI_VPE_DEBUG) += -DDEBUG
obj-$(CONFIG_VIDEO_TI_CAL) += ti-cal.o
ti-cal-y := cal.o
ti-cal-y := cal.o cal-video.o

887
drivers/media/platform/ti-vpe/cal-video.c Normal file
View File

@ -0,0 +1,887 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* TI Camera Access Layer (CAL) - Video Device
*
* Copyright (c) 2015-2020 Texas Instruments Inc.
*
* Authors:
* Benoit Parrot <bparrot@ti.com>
* Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*/
#include <linux/bitfield.h>
#include <linux/delay.h>
#include <linux/ioctl.h>
#include <linux/pm_runtime.h>
#include <linux/videodev2.h>
#include <media/media-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-core.h>
#include <media/videobuf2-dma-contig.h>
#include "cal.h"
/* ------------------------------------------------------------------
* Format Handling
* ------------------------------------------------------------------
*/
static const struct cal_fmt cal_formats[] = {
{
.fourcc = V4L2_PIX_FMT_YUYV,
.code = MEDIA_BUS_FMT_YUYV8_2X8,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_UYVY,
.code = MEDIA_BUS_FMT_UYVY8_2X8,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_YVYU,
.code = MEDIA_BUS_FMT_YVYU8_2X8,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_VYUY,
.code = MEDIA_BUS_FMT_VYUY8_2X8,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
.code = MEDIA_BUS_FMT_RGB565_2X8_LE,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
.code = MEDIA_BUS_FMT_RGB565_2X8_BE,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
.code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
.code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
.bpp = 16,
}, {
.fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
.code = MEDIA_BUS_FMT_RGB888_2X12_LE,
.bpp = 24,
}, {
.fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
.code = MEDIA_BUS_FMT_RGB888_2X12_BE,
.bpp = 24,
}, {
.fourcc = V4L2_PIX_FMT_RGB32, /* argb */
.code = MEDIA_BUS_FMT_ARGB8888_1X32,
.bpp = 32,
}, {
.fourcc = V4L2_PIX_FMT_SBGGR8,
.code = MEDIA_BUS_FMT_SBGGR8_1X8,
.bpp = 8,
}, {
.fourcc = V4L2_PIX_FMT_SGBRG8,
.code = MEDIA_BUS_FMT_SGBRG8_1X8,
.bpp = 8,
}, {
.fourcc = V4L2_PIX_FMT_SGRBG8,
.code = MEDIA_BUS_FMT_SGRBG8_1X8,
.bpp = 8,
}, {
.fourcc = V4L2_PIX_FMT_SRGGB8,
.code = MEDIA_BUS_FMT_SRGGB8_1X8,
.bpp = 8,
}, {
.fourcc = V4L2_PIX_FMT_SBGGR10,
.code = MEDIA_BUS_FMT_SBGGR10_1X10,
.bpp = 10,
}, {
.fourcc = V4L2_PIX_FMT_SGBRG10,
.code = MEDIA_BUS_FMT_SGBRG10_1X10,
.bpp = 10,
}, {
.fourcc = V4L2_PIX_FMT_SGRBG10,
.code = MEDIA_BUS_FMT_SGRBG10_1X10,
.bpp = 10,
}, {
.fourcc = V4L2_PIX_FMT_SRGGB10,
.code = MEDIA_BUS_FMT_SRGGB10_1X10,
.bpp = 10,
}, {
.fourcc = V4L2_PIX_FMT_SBGGR12,
.code = MEDIA_BUS_FMT_SBGGR12_1X12,
.bpp = 12,
}, {
.fourcc = V4L2_PIX_FMT_SGBRG12,
.code = MEDIA_BUS_FMT_SGBRG12_1X12,
.bpp = 12,
}, {
.fourcc = V4L2_PIX_FMT_SGRBG12,
.code = MEDIA_BUS_FMT_SGRBG12_1X12,
.bpp = 12,
}, {
.fourcc = V4L2_PIX_FMT_SRGGB12,
.code = MEDIA_BUS_FMT_SRGGB12_1X12,
.bpp = 12,
},
};
/* Print Four-character-code (FOURCC) */
static char *fourcc_to_str(u32 fmt)
{
static char code[5];
code[0] = (unsigned char)(fmt & 0xff);
code[1] = (unsigned char)((fmt >> 8) & 0xff);
code[2] = (unsigned char)((fmt >> 16) & 0xff);
code[3] = (unsigned char)((fmt >> 24) & 0xff);
code[4] = '\0';
return code;
}
/* ------------------------------------------------------------------
* V4L2 Video IOCTLs
* ------------------------------------------------------------------
*/
static const struct cal_fmt *find_format_by_pix(struct cal_ctx *ctx,
u32 pixelformat)
{
const struct cal_fmt *fmt;
unsigned int k;
for (k = 0; k < ctx->num_active_fmt; k++) {
fmt = ctx->active_fmt[k];
if (fmt->fourcc == pixelformat)
return fmt;
}
return NULL;
}
static const struct cal_fmt *find_format_by_code(struct cal_ctx *ctx,
u32 code)
{
const struct cal_fmt *fmt;
unsigned int k;
for (k = 0; k < ctx->num_active_fmt; k++) {
fmt = ctx->active_fmt[k];
if (fmt->code == code)
return fmt;
}
return NULL;
}
static int cal_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct cal_ctx *ctx = video_drvdata(file);
strscpy(cap->driver, CAL_MODULE_NAME, sizeof(cap->driver));
strscpy(cap->card, CAL_MODULE_NAME, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info),
"platform:%s", dev_name(ctx->cal->dev));
return 0;
}
static int cal_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct cal_ctx *ctx = video_drvdata(file);
const struct cal_fmt *fmt;
if (f->index >= ctx->num_active_fmt)
return -EINVAL;
fmt = ctx->active_fmt[f->index];
f->pixelformat = fmt->fourcc;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
return 0;
}
static int __subdev_get_format(struct cal_ctx *ctx,
struct v4l2_mbus_framefmt *fmt)
{
struct v4l2_subdev_format sd_fmt;
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
int ret;
sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
sd_fmt.pad = 0;
ret = v4l2_subdev_call(ctx->phy->sensor, pad, get_fmt, NULL, &sd_fmt);
if (ret)
return ret;
*fmt = *mbus_fmt;
ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__,
fmt->width, fmt->height, fmt->code);
return 0;
}
static int __subdev_set_format(struct cal_ctx *ctx,
struct v4l2_mbus_framefmt *fmt)
{
struct v4l2_subdev_format sd_fmt;
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
int ret;
sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
sd_fmt.pad = 0;
*mbus_fmt = *fmt;
ret = v4l2_subdev_call(ctx->phy->sensor, pad, set_fmt, NULL, &sd_fmt);
if (ret)
return ret;
ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__,
fmt->width, fmt->height, fmt->code);
return 0;
}
static int cal_calc_format_size(struct cal_ctx *ctx,
const struct cal_fmt *fmt,
struct v4l2_format *f)
{
u32 bpl, max_width;
if (!fmt) {
ctx_dbg(3, ctx, "No cal_fmt provided!\n");
return -EINVAL;
}
/*
* Maximum width is bound by the DMA max width in bytes.
* We need to recalculate the actual maxi width depending on the
* number of bytes per pixels required.
*/
max_width = MAX_WIDTH_BYTES / (ALIGN(fmt->bpp, 8) >> 3);
v4l_bound_align_image(&f->fmt.pix.width, 48, max_width, 2,
&f->fmt.pix.height, 32, MAX_HEIGHT_LINES, 0, 0);
bpl = (f->fmt.pix.width * ALIGN(fmt->bpp, 8)) >> 3;
f->fmt.pix.bytesperline = ALIGN(bpl, 16);
f->fmt.pix.sizeimage = f->fmt.pix.height *
f->fmt.pix.bytesperline;
ctx_dbg(3, ctx, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n",
__func__, fourcc_to_str(f->fmt.pix.pixelformat),
f->fmt.pix.width, f->fmt.pix.height,
f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
return 0;
}
static int cal_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cal_ctx *ctx = video_drvdata(file);
*f = ctx->v_fmt;
return 0;
}
static int cal_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cal_ctx *ctx = video_drvdata(file);
const struct cal_fmt *fmt;
struct v4l2_subdev_frame_size_enum fse;
int ret, found;
fmt = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
if (!fmt) {
ctx_dbg(3, ctx, "Fourcc format (0x%08x) not found.\n",
f->fmt.pix.pixelformat);
/* Just get the first one enumerated */
fmt = ctx->active_fmt[0];
f->fmt.pix.pixelformat = fmt->fourcc;
}
f->fmt.pix.field = ctx->v_fmt.fmt.pix.field;
/* check for/find a valid width/height */
ret = 0;
found = false;
fse.pad = 0;
fse.code = fmt->code;
fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
for (fse.index = 0; ; fse.index++) {
ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_frame_size,
NULL, &fse);
if (ret)
break;
if ((f->fmt.pix.width == fse.max_width) &&
(f->fmt.pix.height == fse.max_height)) {
found = true;
break;
} else if ((f->fmt.pix.width >= fse.min_width) &&
(f->fmt.pix.width <= fse.max_width) &&
(f->fmt.pix.height >= fse.min_height) &&
(f->fmt.pix.height <= fse.max_height)) {
found = true;
break;
}
}
if (!found) {
/* use existing values as default */
f->fmt.pix.width = ctx->v_fmt.fmt.pix.width;
f->fmt.pix.height = ctx->v_fmt.fmt.pix.height;
}
/*
* Use current colorspace for now, it will get
* updated properly during s_fmt
*/
f->fmt.pix.colorspace = ctx->v_fmt.fmt.pix.colorspace;
return cal_calc_format_size(ctx, fmt, f);
}
static int cal_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cal_ctx *ctx = video_drvdata(file);
struct vb2_queue *q = &ctx->vb_vidq;
const struct cal_fmt *fmt;
struct v4l2_mbus_framefmt mbus_fmt;
int ret;
if (vb2_is_busy(q)) {
ctx_dbg(3, ctx, "%s device busy\n", __func__);
return -EBUSY;
}
ret = cal_try_fmt_vid_cap(file, priv, f);
if (ret < 0)
return ret;
fmt = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
ret = __subdev_set_format(ctx, &mbus_fmt);
if (ret)
return ret;
/* Just double check nothing has gone wrong */
if (mbus_fmt.code != fmt->code) {
ctx_dbg(3, ctx,
"%s subdev changed format on us, this should not happen\n",
__func__);
return -EINVAL;
}
v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt);
ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ctx->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
cal_calc_format_size(ctx, fmt, &ctx->v_fmt);
ctx->fmt = fmt;
ctx->m_fmt = mbus_fmt;
*f = ctx->v_fmt;
return 0;
}
static int cal_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
struct cal_ctx *ctx = video_drvdata(file);
const struct cal_fmt *fmt;
struct v4l2_subdev_frame_size_enum fse;
int ret;
/* check for valid format */
fmt = find_format_by_pix(ctx, fsize->pixel_format);
if (!fmt) {
ctx_dbg(3, ctx, "Invalid pixel code: %x\n",
fsize->pixel_format);
return -EINVAL;
}
fse.index = fsize->index;
fse.pad = 0;
fse.code = fmt->code;
fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_frame_size, NULL,
&fse);
if (ret)
return ret;
ctx_dbg(1, ctx, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
__func__, fse.index, fse.code, fse.min_width, fse.max_width,
fse.min_height, fse.max_height);
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = fse.max_width;
fsize->discrete.height = fse.max_height;
return 0;
}
static int cal_enum_input(struct file *file, void *priv,
struct v4l2_input *inp)
{
if (inp->index > 0)
return -EINVAL;
inp->type = V4L2_INPUT_TYPE_CAMERA;
sprintf(inp->name, "Camera %u", inp->index);
return 0;
}
static int cal_g_input(struct file *file, void *priv, unsigned int *i)
{
*i = 0;
return 0;
}
static int cal_s_input(struct file *file, void *priv, unsigned int i)
{
return i > 0 ? -EINVAL : 0;
}
/* timeperframe is arbitrary and continuous */
static int cal_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *fival)
{
struct cal_ctx *ctx = video_drvdata(file);
const struct cal_fmt *fmt;
struct v4l2_subdev_frame_interval_enum fie = {
.index = fival->index,
.width = fival->width,
.height = fival->height,
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
int ret;
fmt = find_format_by_pix(ctx, fival->pixel_format);
if (!fmt)
return -EINVAL;
fie.code = fmt->code;
ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_frame_interval,
NULL, &fie);
if (ret)
return ret;
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fival->discrete = fie.interval;
return 0;
}
static const struct v4l2_file_operations cal_fops = {
.owner = THIS_MODULE,
.open = v4l2_fh_open,
.release = vb2_fop_release,
.read = vb2_fop_read,
.poll = vb2_fop_poll,
.unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
.mmap = vb2_fop_mmap,
};
static const struct v4l2_ioctl_ops cal_ioctl_ops = {
.vidioc_querycap = cal_querycap,
.vidioc_enum_fmt_vid_cap = cal_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = cal_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = cal_s_fmt_vid_cap,
.vidioc_enum_framesizes = cal_enum_framesizes,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_enum_input = cal_enum_input,
.vidioc_g_input = cal_g_input,
.vidioc_s_input = cal_s_input,
.vidioc_enum_frameintervals = cal_enum_frameintervals,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
/* ------------------------------------------------------------------
* videobuf2 Operations
* ------------------------------------------------------------------
*/
static int cal_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
if (vq->num_buffers + *nbuffers < 3)
*nbuffers = 3 - vq->num_buffers;
if (*nplanes) {
if (sizes[0] < size)
return -EINVAL;
size = sizes[0];
}
*nplanes = 1;
sizes[0] = size;
ctx_dbg(3, ctx, "nbuffers=%d, size=%d\n", *nbuffers, sizes[0]);
return 0;
}
static int cal_buffer_prepare(struct vb2_buffer *vb)
{
struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct cal_buffer *buf = container_of(vb, struct cal_buffer,
vb.vb2_buf);
unsigned long size;
if (WARN_ON(!ctx->fmt))
return -EINVAL;
size = ctx->v_fmt.fmt.pix.sizeimage;
if (vb2_plane_size(vb, 0) < size) {
ctx_err(ctx,
"data will not fit into plane (%lu < %lu)\n",
vb2_plane_size(vb, 0), size);
return -EINVAL;
}
vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
return 0;
}
static void cal_buffer_queue(struct vb2_buffer *vb)
{
struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct cal_buffer *buf = container_of(vb, struct cal_buffer,
vb.vb2_buf);
struct cal_dmaqueue *vidq = &ctx->vidq;
unsigned long flags;
/* recheck locking */
spin_lock_irqsave(&ctx->slock, flags);
list_add_tail(&buf->list, &vidq->active);
spin_unlock_irqrestore(&ctx->slock, flags);
}
static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
struct cal_dmaqueue *dma_q = &ctx->vidq;
struct cal_buffer *buf, *tmp;
unsigned long addr;
unsigned long flags;
int ret;
spin_lock_irqsave(&ctx->slock, flags);
if (list_empty(&dma_q->active)) {
spin_unlock_irqrestore(&ctx->slock, flags);
ctx_dbg(3, ctx, "buffer queue is empty\n");
return -EIO;
}
buf = list_entry(dma_q->active.next, struct cal_buffer, list);
ctx->cur_frm = buf;
ctx->next_frm = buf;
list_del(&buf->list);
spin_unlock_irqrestore(&ctx->slock, flags);
addr = vb2_dma_contig_plane_dma_addr(&ctx->cur_frm->vb.vb2_buf, 0);
ctx->sequence = 0;
pm_runtime_get_sync(ctx->cal->dev);
cal_ctx_csi2_config(ctx);
cal_ctx_pix_proc_config(ctx);
cal_ctx_wr_dma_config(ctx, ctx->v_fmt.fmt.pix.bytesperline,
ctx->v_fmt.fmt.pix.height);
cal_camerarx_enable_irqs(ctx->phy);
ret = cal_camerarx_start(ctx->phy, ctx->fmt);
if (ret)
goto err;
cal_ctx_wr_dma_addr(ctx, addr);
cal_camerarx_ppi_enable(ctx->phy);
if (cal_debug >= 4)
cal_quickdump_regs(ctx->cal);
return 0;
err:
spin_lock_irqsave(&ctx->slock, flags);
vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
ctx->cur_frm = NULL;
ctx->next_frm = NULL;
list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
}
spin_unlock_irqrestore(&ctx->slock, flags);
return ret;
}
static void cal_stop_streaming(struct vb2_queue *vq)
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
struct cal_dmaqueue *dma_q = &ctx->vidq;
struct cal_buffer *buf, *tmp;
unsigned long timeout;
unsigned long flags;
bool dma_act;
cal_camerarx_ppi_disable(ctx->phy);
/* wait for stream and dma to finish */
dma_act = true;
timeout = jiffies + msecs_to_jiffies(500);
while (dma_act && time_before(jiffies, timeout)) {
msleep(50);
spin_lock_irqsave(&ctx->slock, flags);
dma_act = ctx->dma_act;
spin_unlock_irqrestore(&ctx->slock, flags);
}
if (dma_act)
ctx_err(ctx, "failed to disable dma cleanly\n");
cal_camerarx_disable_irqs(ctx->phy);
cal_camerarx_stop(ctx->phy);
/* Release all active buffers */
spin_lock_irqsave(&ctx->slock, flags);
list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
}
if (ctx->cur_frm == ctx->next_frm) {
vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
} else {
vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
vb2_buffer_done(&ctx->next_frm->vb.vb2_buf,
VB2_BUF_STATE_ERROR);
}
ctx->cur_frm = NULL;
ctx->next_frm = NULL;
spin_unlock_irqrestore(&ctx->slock, flags);
pm_runtime_put_sync(ctx->cal->dev);
}
static const struct vb2_ops cal_video_qops = {
.queue_setup = cal_queue_setup,
.buf_prepare = cal_buffer_prepare,
.buf_queue = cal_buffer_queue,
.start_streaming = cal_start_streaming,
.stop_streaming = cal_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
/* ------------------------------------------------------------------
* V4L2 Initialization and Registration
* ------------------------------------------------------------------
*/
static const struct video_device cal_videodev = {
.name = CAL_MODULE_NAME,
.fops = &cal_fops,
.ioctl_ops = &cal_ioctl_ops,
.minor = -1,
.release = video_device_release_empty,
.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
V4L2_CAP_READWRITE,
};
static int cal_ctx_v4l2_init_formats(struct cal_ctx *ctx)
{
struct v4l2_subdev_mbus_code_enum mbus_code;
struct v4l2_mbus_framefmt mbus_fmt;
const struct cal_fmt *fmt;
unsigned int i, j, k;
int ret = 0;
/* Enumerate sub device formats and enable all matching local formats */
ctx->active_fmt = devm_kcalloc(ctx->cal->dev, ARRAY_SIZE(cal_formats),
sizeof(*ctx->active_fmt), GFP_KERNEL);
ctx->num_active_fmt = 0;
for (j = 0, i = 0; ret != -EINVAL; ++j) {
memset(&mbus_code, 0, sizeof(mbus_code));
mbus_code.index = j;
mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_mbus_code,
NULL, &mbus_code);
if (ret)
continue;
ctx_dbg(2, ctx,
"subdev %s: code: %04x idx: %u\n",
ctx->phy->sensor->name, mbus_code.code, j);
for (k = 0; k < ARRAY_SIZE(cal_formats); k++) {
const struct cal_fmt *fmt = &cal_formats[k];
if (mbus_code.code == fmt->code) {
ctx->active_fmt[i] = fmt;
ctx_dbg(2, ctx,
"matched fourcc: %s: code: %04x idx: %u\n",
fourcc_to_str(fmt->fourcc),
fmt->code, i);
ctx->num_active_fmt = ++i;
}
}
}
if (i == 0) {
ctx_err(ctx, "No suitable format reported by subdev %s\n",
ctx->phy->sensor->name);
return -EINVAL;
}
ret = __subdev_get_format(ctx, &mbus_fmt);
if (ret)
return ret;
fmt = find_format_by_code(ctx, mbus_fmt.code);
if (!fmt) {
ctx_dbg(3, ctx, "mbus code format (0x%08x) not found.\n",
mbus_fmt.code);
return -EINVAL;
}
/* Save current subdev format */
v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt);
ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ctx->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
cal_calc_format_size(ctx, fmt, &ctx->v_fmt);
ctx->fmt = fmt;
ctx->m_fmt = mbus_fmt;
return 0;
}
int cal_ctx_v4l2_register(struct cal_ctx *ctx)
{
struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
struct video_device *vfd = &ctx->vdev;
int ret;
ret = cal_ctx_v4l2_init_formats(ctx);
if (ret)
return ret;
ret = v4l2_ctrl_add_handler(hdl, ctx->phy->sensor->ctrl_handler, NULL,
true);
if (ret < 0) {
ctx_err(ctx, "Failed to add sensor ctrl handler\n");
return ret;
}
ret = video_register_device(vfd, VFL_TYPE_VIDEO, cal_video_nr);
if (ret < 0) {
ctx_err(ctx, "Failed to register video device\n");
return ret;
}
ctx_info(ctx, "V4L2 device registered as %s\n",
video_device_node_name(vfd));
return 0;
}
void cal_ctx_v4l2_unregister(struct cal_ctx *ctx)
{
ctx_dbg(1, ctx, "unregistering %s\n",
video_device_node_name(&ctx->vdev));
video_unregister_device(&ctx->vdev);
}
int cal_ctx_v4l2_init(struct cal_ctx *ctx)
{
struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
struct video_device *vfd = &ctx->vdev;
struct vb2_queue *q = &ctx->vb_vidq;
int ret;
INIT_LIST_HEAD(&ctx->vidq.active);
spin_lock_init(&ctx->slock);
mutex_init(&ctx->mutex);
/* Initialize the vb2 queue. */
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
q->drv_priv = ctx;
q->buf_struct_size = sizeof(struct cal_buffer);
q->ops = &cal_video_qops;
q->mem_ops = &vb2_dma_contig_memops;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->lock = &ctx->mutex;
q->min_buffers_needed = 3;
q->dev = ctx->cal->dev;
ret = vb2_queue_init(q);
if (ret)
return ret;
/* Initialize the video device and media entity. */
*vfd = cal_videodev;
vfd->v4l2_dev = &ctx->cal->v4l2_dev;
vfd->queue = q;
snprintf(vfd->name, sizeof(vfd->name), "CAL output %u", ctx->index);
vfd->lock = &ctx->mutex;
video_set_drvdata(vfd, ctx);
ctx->pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_pads_init(&vfd->entity, 1, &ctx->pad);
if (ret < 0)
return ret;
/* Initialize the control handler. */
ret = v4l2_ctrl_handler_init(hdl, 11);
if (ret < 0) {
ctx_err(ctx, "Failed to init ctrl handler\n");
goto error;
}
vfd->ctrl_handler = hdl;
return 0;
error:
media_entity_cleanup(&vfd->entity);
return ret;
}
void cal_ctx_v4l2_cleanup(struct cal_ctx *ctx)
{
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
media_entity_cleanup(&ctx->vdev.entity);
}

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drivers/media/platform/ti-vpe/cal.c
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* TI Camera Access Layer (CAL)
*
* Copyright (c) 2015-2020 Texas Instruments Inc.
*
* Authors:
* Benoit Parrot <bparrot@ti.com>
* Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*/
#ifndef __TI_CAL_H__
#define __TI_CAL_H__
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/videodev2.h>
#include <media/media-device.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/videobuf2-v4l2.h>
#define CAL_MODULE_NAME "cal"
#define CAL_NUM_CONTEXT 2
#define CAL_NUM_CSI2_PORTS 2
#define MAX_WIDTH_BYTES (8192 * 8)
#define MAX_HEIGHT_LINES 16383
struct device;
struct device_node;
struct resource;
struct regmap;
struct regmap_fied;
struct v4l2_subdev;
/* CTRL_CORE_CAMERRX_CONTROL register field id */
enum cal_camerarx_field {
F_CTRLCLKEN,
F_CAMMODE,
F_LANEENABLE,
F_CSI_MODE,
F_MAX_FIELDS,
};
struct cal_fmt {
u32 fourcc;
u32 code;
/* Bits per pixel */
u8 bpp;
};
/* buffer for one video frame */
struct cal_buffer {
/* common v4l buffer stuff -- must be first */
struct vb2_v4l2_buffer vb;
struct list_head list;
};
struct cal_dmaqueue {
struct list_head active;
};
struct cal_camerarx_data {
struct {
unsigned int lsb;
unsigned int msb;
} fields[F_MAX_FIELDS];
unsigned int num_lanes;
};
struct cal_data {
const struct cal_camerarx_data *camerarx;
unsigned int num_csi2_phy;
unsigned int flags;
};
/*
* The Camera Adaptation Layer (CAL) module is paired with one or more complex
* I/O PHYs (CAMERARX). It contains multiple instances of CSI-2, processing and
* DMA contexts.
*
* The cal_dev structure represents the whole subsystem, including the CAL and
* the CAMERARX instances. Instances of struct cal_dev are named cal through the
* driver.
*
* The cal_camerarx structure represents one CAMERARX instance. Instances of
* cal_camerarx are named phy through the driver.
*
* The cal_ctx structure represents the combination of one CSI-2 context, one
* processing context and one DMA context. Instance of struct cal_ctx are named
* ctx through the driver.
*/
struct cal_camerarx {
void __iomem *base;
struct resource *res;
struct device *dev;
struct regmap_field *fields[F_MAX_FIELDS];
struct cal_dev *cal;
unsigned int instance;
struct v4l2_fwnode_endpoint endpoint;
struct device_node *sensor_node;
struct v4l2_subdev *sensor;
};
struct cal_dev {
struct clk *fclk;
int irq;
void __iomem *base;
struct resource *res;
struct device *dev;
const struct cal_data *data;
u32 revision;
/* Control Module handle */
struct regmap *syscon_camerrx;
u32 syscon_camerrx_offset;
/* Camera Core Module handle */
struct cal_camerarx *phy[CAL_NUM_CSI2_PORTS];
struct cal_ctx *ctx[CAL_NUM_CONTEXT];
struct media_device mdev;
struct v4l2_device v4l2_dev;
struct v4l2_async_notifier notifier;
};
/*
* There is one cal_ctx structure for each camera core context.
*/
struct cal_ctx {
struct v4l2_ctrl_handler ctrl_handler;
struct video_device vdev;
struct media_pad pad;
struct cal_dev *cal;
struct cal_camerarx *phy;
/* v4l2_ioctl mutex */
struct mutex mutex;
/* v4l2 buffers lock */
spinlock_t slock;
struct cal_dmaqueue vidq;
/* video capture */
const struct cal_fmt *fmt;
/* Used to store current pixel format */
struct v4l2_format v_fmt;
/* Used to store current mbus frame format */
struct v4l2_mbus_framefmt m_fmt;
/* Current subdev enumerated format */
const struct cal_fmt **active_fmt;
unsigned int num_active_fmt;
unsigned int sequence;
struct vb2_queue vb_vidq;
unsigned int index;
unsigned int cport;
/* Pointer pointing to current v4l2_buffer */
struct cal_buffer *cur_frm;
/* Pointer pointing to next v4l2_buffer */
struct cal_buffer *next_frm;
bool dma_act;
};
extern unsigned int cal_debug;
extern int cal_video_nr;
#define cal_dbg(level, cal, fmt, arg...) \
do { \
if (cal_debug >= (level)) \
dev_printk(KERN_DEBUG, (cal)->dev, fmt, ##arg); \
} while (0)
#define cal_info(cal, fmt, arg...) \
dev_info((cal)->dev, fmt, ##arg)
#define cal_err(cal, fmt, arg...) \
dev_err((cal)->dev, fmt, ##arg)
#define ctx_dbg(level, ctx, fmt, arg...) \
cal_dbg(level, (ctx)->cal, "ctx%u: " fmt, (ctx)->index, ##arg)
#define ctx_info(ctx, fmt, arg...) \
cal_info((ctx)->cal, "ctx%u: " fmt, (ctx)->index, ##arg)
#define ctx_err(ctx, fmt, arg...) \
cal_err((ctx)->cal, "ctx%u: " fmt, (ctx)->index, ##arg)
#define phy_dbg(level, phy, fmt, arg...) \
cal_dbg(level, (phy)->cal, "phy%u: " fmt, (phy)->instance, ##arg)
#define phy_info(phy, fmt, arg...) \
cal_info((phy)->cal, "phy%u: " fmt, (phy)->instance, ##arg)
#define phy_err(phy, fmt, arg...) \
cal_err((phy)->cal, "phy%u: " fmt, (phy)->instance, ##arg)
void cal_quickdump_regs(struct cal_dev *cal);
int cal_camerarx_start(struct cal_camerarx *phy, const struct cal_fmt *fmt);
void cal_camerarx_stop(struct cal_camerarx *phy);
void cal_camerarx_enable_irqs(struct cal_camerarx *phy);
void cal_camerarx_disable_irqs(struct cal_camerarx *phy);
void cal_camerarx_ppi_enable(struct cal_camerarx *phy);
void cal_camerarx_ppi_disable(struct cal_camerarx *phy);
void cal_ctx_csi2_config(struct cal_ctx *ctx);
void cal_ctx_pix_proc_config(struct cal_ctx *ctx);
void cal_ctx_wr_dma_config(struct cal_ctx *ctx, unsigned int width,
unsigned int height);
void cal_ctx_wr_dma_addr(struct cal_ctx *ctx, unsigned int dmaaddr);
int cal_ctx_v4l2_register(struct cal_ctx *ctx);
void cal_ctx_v4l2_unregister(struct cal_ctx *ctx);
int cal_ctx_v4l2_init(struct cal_ctx *ctx);
void cal_ctx_v4l2_cleanup(struct cal_ctx *ctx);
#endif /* __TI_CAL_H__ */