// SPDX-License-Identifier: GPL-2.0-or-later
/*
* i.MX IPUv3 IC PP mem2mem CSC/Scaler driver
*
* Copyright (C) 2011 Pengutronix, Sascha Hauer
* Copyright (C) 2018 Pengutronix, Philipp Zabel
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <video/imx-ipu-v3.h>
#include <video/imx-ipu-image-convert.h>
#include <media/media-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-dma-contig.h>
#include "imx-media.h"
#define fh_to_ctx(__fh) container_of(__fh, struct ipu_csc_scaler_ctx, fh)
#define IMX_CSC_SCALER_NAME "imx-csc-scaler"
enum {
V4L2_M2M_SRC = 0,
V4L2_M2M_DST = 1,
};
struct ipu_csc_scaler_priv {
struct imx_media_video_dev vdev;
struct v4l2_m2m_dev *m2m_dev;
struct device *dev;
struct imx_media_dev *md;
struct mutex mutex; /* mem2mem device mutex */
};
#define vdev_to_priv(v) container_of(v, struct ipu_csc_scaler_priv, vdev)
/* Per-queue, driver-specific private data */
struct ipu_csc_scaler_q_data {
struct v4l2_pix_format cur_fmt;
struct v4l2_rect rect;
};
struct ipu_csc_scaler_ctx {
struct ipu_csc_scaler_priv *priv;
struct v4l2_fh fh;
struct ipu_csc_scaler_q_data q_data[2];
struct ipu_image_convert_ctx *icc;
struct v4l2_ctrl_handler ctrl_hdlr;
int rotate;
bool hflip;
bool vflip;
enum ipu_rotate_mode rot_mode;
unsigned int sequence;
};
static struct ipu_csc_scaler_q_data *get_q_data(struct ipu_csc_scaler_ctx *ctx,
enum v4l2_buf_type type)
{
if (V4L2_TYPE_IS_OUTPUT(type))
return &ctx->q_data[V4L2_M2M_SRC];
else
return &ctx->q_data[V4L2_M2M_DST];
}
/*
* mem2mem callbacks
*/
static void job_abort(void *_ctx)
{
struct ipu_csc_scaler_ctx *ctx = _ctx;
if (ctx->icc)
ipu_image_convert_abort(ctx->icc);
}
static void ipu_ic_pp_complete(struct ipu_image_convert_run *run, void *_ctx)
{
struct ipu_csc_scaler_ctx *ctx = _ctx;
struct ipu_csc_scaler_priv *priv = ctx->priv;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
src_buf->sequence = ctx->sequence++;
dst_buf->sequence = src_buf->sequence;
v4l2_m2m_buf_done(src_buf, run->status ? VB2_BUF_STATE_ERROR :
VB2_BUF_STATE_DONE);
v4l2_m2m_buf_done(dst_buf, run->status ? VB2_BUF_STATE_ERROR :
VB2_BUF_STATE_DONE);
v4l2_m2m_job_finish(priv->m2m_dev, ctx->fh.m2m_ctx);
kfree(run);
}
static void device_run(void *_ctx)
{
struct ipu_csc_scaler_ctx *ctx = _ctx;
struct ipu_csc_scaler_priv *priv = ctx->priv;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
struct ipu_image_convert_run *run;
int ret;
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
run = kzalloc(sizeof(*run), GFP_KERNEL);
if (!run)
goto err;
run->ctx = ctx->icc;
run->in_phys = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
run->out_phys = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
ret = ipu_image_convert_queue(run);
if (ret < 0) {
v4l2_err(ctx->priv->vdev.vfd->v4l2_dev,
"%s: failed to queue: %d\n", __func__, ret);
goto err;
}
return;
err:
v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
v4l2_m2m_job_finish(priv->m2m_dev, ctx->fh.m2m_ctx);
}
/*
* Video ioctls
*/
static int ipu_csc_scaler_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
strscpy(cap->driver, IMX_CSC_SCALER_NAME, sizeof(cap->driver));
strscpy(cap->card, IMX_CSC_SCALER_NAME, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info),
"platform:%s", IMX_CSC_SCALER_NAME);
return 0;
}
static int ipu_csc_scaler_enum_fmt(struct file *file, void *fh,
struct v4l2_fmtdesc *f)
{
u32 fourcc;
int ret;
ret = imx_media_enum_pixel_formats(&fourcc, f->index,
PIXFMT_SEL_YUV_RGB, 0);
if (ret)
return ret;
f->pixelformat = fourcc;
return 0;
}
static int ipu_csc_scaler_g_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
struct ipu_csc_scaler_q_data *q_data;
q_data = get_q_data(ctx, f->type);
f->fmt.pix = q_data->cur_fmt;
return 0;
}
static int ipu_csc_scaler_try_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
struct ipu_csc_scaler_q_data *q_data = get_q_data(ctx, f->type);
struct ipu_image test_in, test_out;
enum v4l2_field field;
field = f->fmt.pix.field;
if (field == V4L2_FIELD_ANY)
field = V4L2_FIELD_NONE;
else if (field != V4L2_FIELD_NONE)
return -EINVAL;
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
struct ipu_csc_scaler_q_data *q_data_in =
get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
test_out.pix = f->fmt.pix;
test_in.pix = q_data_in->cur_fmt;
} else {
struct ipu_csc_scaler_q_data *q_data_out =
get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
test_in.pix = f->fmt.pix;
test_out.pix = q_data_out->cur_fmt;
}
ipu_image_convert_adjust(&test_in, &test_out, ctx->rot_mode);
f->fmt.pix = (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
test_out.pix : test_in.pix;
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
f->fmt.pix.colorspace = q_data->cur_fmt.colorspace;
f->fmt.pix.ycbcr_enc = q_data->cur_fmt.ycbcr_enc;
f->fmt.pix.xfer_func = q_data->cur_fmt.xfer_func;
f->fmt.pix.quantization = q_data->cur_fmt.quantization;
} else if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT) {
f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
f->fmt.pix.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
f->fmt.pix.xfer_func = V4L2_XFER_FUNC_DEFAULT;
f->fmt.pix.quantization = V4L2_QUANTIZATION_DEFAULT;
}
return 0;
}
static int ipu_csc_scaler_s_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct ipu_csc_scaler_q_data *q_data;
struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
struct vb2_queue *vq;
int ret;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (vb2_is_busy(vq)) {
v4l2_err(ctx->priv->vdev.vfd->v4l2_dev, "%s: queue busy\n",
__func__);
return -EBUSY;
}
q_data = get_q_data(ctx, f->type);
ret = ipu_csc_scaler_try_fmt(file, priv, f);
if (ret < 0)
return ret;
q_data->cur_fmt.width = f->fmt.pix.width;
q_data->cur_fmt.height = f->fmt.pix.height;
q_data->cur_fmt.pixelformat = f->fmt.pix.pixelformat;
q_data->cur_fmt.field = f->fmt.pix.field;
q_data->cur_fmt.bytesperline = f->fmt.pix.bytesperline;
q_data->cur_fmt.sizeimage = f->fmt.pix.sizeimage;
/* Reset cropping/composing rectangle */
q_data->rect.left = 0;
q_data->rect.top = 0;
q_data->rect.width = q_data->cur_fmt.width;
q_data->rect.height = q_data->cur_fmt.height;
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
/* Set colorimetry on the output queue */
q_data->cur_fmt.colorspace = f->fmt.pix.colorspace;
q_data->cur_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
q_data->cur_fmt.xfer_func = f->fmt.pix.xfer_func;
q_data->cur_fmt.quantization = f->fmt.pix.quantization;
/* Propagate colorimetry to the capture queue */
q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
q_data->cur_fmt.colorspace = f->fmt.pix.colorspace;
q_data->cur_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
q_data->cur_fmt.xfer_func = f->fmt.pix.xfer_func;
q_data->cur_fmt.quantization = f->fmt.pix.quantization;
}
/*
* TODO: Setting colorimetry on the capture queue is currently not
* supported by the V4L2 API
*/
return 0;
}
static int ipu_csc_scaler_g_selection(struct file *file, void *priv,
struct v4l2_selection *s)
{
struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
struct ipu_csc_scaler_q_data *q_data;
switch (s->target) {
case V4L2_SEL_TGT_CROP:
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
break;
case V4L2_SEL_TGT_COMPOSE:
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
break;
default:
return -EINVAL;
}
if (s->target == V4L2_SEL_TGT_CROP ||
s->target == V4L2_SEL_TGT_COMPOSE) {
s->r = q_data->rect;
} else {
s->r.left = 0;
s->r.top = 0;
s->r.width = q_data->cur_fmt.width;
s->r.height = q_data->cur_fmt.height;
}
return 0;
}
static int ipu_csc_scaler_s_selection(struct file *file, void *priv,
struct v4l2_selection *s)
{
struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
struct ipu_csc_scaler_q_data *q_data;
switch (s->target) {
case V4L2_SEL_TGT_CROP:
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
break;
case V4L2_SEL_TGT_COMPOSE:
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
break;
default:
return -EINVAL;
}
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
q_data = get_q_data(ctx, s->type);
/* The input's frame width to the IC must be a multiple of 8 pixels
* When performing resizing the frame width must be multiple of burst
* size - 8 or 16 pixels as defined by CB#_BURST_16 parameter.
*/
if (s->flags & V4L2_SEL_FLAG_GE)
s->r.width = round_up(s->r.width, 8);
if (s->flags & V4L2_SEL_FLAG_LE)
s->r.width = round_down(s->r.width, 8);
s->r.width = clamp_t(unsigned int, s->r.width, 8,
round_down(q_data->cur_fmt.width, 8));
s->r.height = clamp_t(unsigned int, s->r.height, 1,
q_data->cur_fmt.height);
s->r.left = clamp_t(unsigned int, s->r.left, 0,
q_data->cur_fmt.width - s->r.width);
s->r.top = clamp_t(unsigned int, s->r.top, 0,
q_data->cur_fmt.height - s->r.height);
/* V4L2_SEL_FLAG_KEEP_CONFIG is only valid for subdevices */
q_data->rect = s->r;
return 0;
}
static const struct v4l2_ioctl_ops ipu_csc_scaler_ioctl_ops = {
.vidioc_querycap = ipu_csc_scaler_querycap,
.vidioc_enum_fmt_vid_cap = ipu_csc_scaler_enum_fmt,
.vidioc_g_fmt_vid_cap = ipu_csc_scaler_g_fmt,
.vidioc_try_fmt_vid_cap = ipu_csc_scaler_try_fmt,
.vidioc_s_fmt_vid_cap = ipu_csc_scaler_s_fmt,
.vidioc_enum_fmt_vid_out = ipu_csc_scaler_enum_fmt,
.vidioc_g_fmt_vid_out = ipu_csc_scaler_g_fmt,
.vidioc_try_fmt_vid_out = ipu_csc_scaler_try_fmt,
.vidioc_s_fmt_vid_out = ipu_csc_scaler_s_fmt,
.vidioc_g_selection = ipu_csc_scaler_g_selection,
.vidioc_s_selection = ipu_csc_scaler_s_selection,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
/*
* Queue operations
*/
static int ipu_csc_scaler_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers,
unsigned int *nplanes,
unsigned int sizes[],
struct device *alloc_devs[])
{
struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vq);
struct ipu_csc_scaler_q_data *q_data;
unsigned int size, count = *nbuffers;
q_data = get_q_data(ctx, vq->type);
size = q_data->cur_fmt.sizeimage;
*nbuffers = count;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
*nplanes = 1;
sizes[0] = size;
dev_dbg(ctx->priv->dev, "get %d buffer(s) of size %d each.\n",
count, size);
return 0;
}
static int ipu_csc_scaler_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_queue *vq = vb->vb2_queue;
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vq);
struct ipu_csc_scaler_q_data *q_data;
unsigned long size;
dev_dbg(ctx->priv->dev, "type: %d\n", vq->type);
if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
if (vbuf->field == V4L2_FIELD_ANY)
vbuf->field = V4L2_FIELD_NONE;
if (vbuf->field != V4L2_FIELD_NONE) {
dev_dbg(ctx->priv->dev, "%s: field isn't supported\n",
__func__);
return -EINVAL;
}
}
q_data = get_q_data(ctx, vq->type);
size = q_data->cur_fmt.sizeimage;
if (vb2_plane_size(vb, 0) < size) {
dev_dbg(ctx->priv->dev,
"%s: data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0), size);
return -EINVAL;
}
vb2_set_plane_payload(vb, 0, size);
return 0;
}
static void ipu_csc_scaler_buf_queue(struct vb2_buffer *vb)
{
struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, to_vb2_v4l2_buffer(vb));
}
static void ipu_image_from_q_data(struct ipu_image *im,
struct ipu_csc_scaler_q_data *q_data)
{
struct v4l2_pix_format *fmt = &q_data->cur_fmt;
im->pix = *fmt;
if (fmt->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
im->pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
if (fmt->quantization == V4L2_QUANTIZATION_DEFAULT)
im->pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
im->rect = q_data->rect;
}
static int ipu_csc_scaler_start_streaming(struct vb2_queue *q,
unsigned int count)
{
const enum ipu_ic_task ic_task = IC_TASK_POST_PROCESSOR;
struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(q);
struct ipu_csc_scaler_priv *priv = ctx->priv;
struct ipu_soc *ipu = priv->md->ipu[0];
struct ipu_csc_scaler_q_data *q_data;
struct vb2_queue *other_q;
struct ipu_image in, out;
other_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
(q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
V4L2_BUF_TYPE_VIDEO_OUTPUT :
V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (!vb2_is_streaming(other_q))
return 0;
if (ctx->icc) {
v4l2_warn(ctx->priv->vdev.vfd->v4l2_dev, "removing old ICC\n");
ipu_image_convert_unprepare(ctx->icc);
}
q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
ipu_image_from_q_data(&in, q_data);
q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
ipu_image_from_q_data(&out, q_data);
ctx->icc = ipu_image_convert_prepare(ipu, ic_task, &in, &out,
ctx->rot_mode,
ipu_ic_pp_complete, ctx);
if (IS_ERR(ctx->icc)) {
struct vb2_v4l2_buffer *buf;
int ret = PTR_ERR(ctx->icc);
ctx->icc = NULL;
v4l2_err(ctx->priv->vdev.vfd->v4l2_dev, "%s: error %d\n",
__func__, ret);
while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
return ret;
}
return 0;
}
static void ipu_csc_scaler_stop_streaming(struct vb2_queue *q)
{
struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(q);
struct vb2_v4l2_buffer *buf;
if (ctx->icc) {
ipu_image_convert_unprepare(ctx->icc);
ctx->icc = NULL;
}
ctx->sequence = 0;
if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
} else {
while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
}
}
static const struct vb2_ops ipu_csc_scaler_qops = {
.queue_setup = ipu_csc_scaler_queue_setup,
.buf_prepare = ipu_csc_scaler_buf_prepare,
.buf_queue = ipu_csc_scaler_buf_queue,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
.start_streaming = ipu_csc_scaler_start_streaming,
.stop_streaming = ipu_csc_scaler_stop_streaming,
};
static int ipu_csc_scaler_queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct ipu_csc_scaler_ctx *ctx = priv;
int ret;
memset(src_vq, 0, sizeof(*src_vq));
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
src_vq->drv_priv = ctx;
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
src_vq->ops = &ipu_csc_scaler_qops;
src_vq->mem_ops = &vb2_dma_contig_memops;
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->lock = &ctx->priv->mutex;
src_vq->dev = ctx->priv->dev;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
memset(dst_vq, 0, sizeof(*dst_vq));
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &ipu_csc_scaler_qops;
dst_vq->mem_ops = &vb2_dma_contig_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->priv->mutex;
dst_vq->dev = ctx->priv->dev;
return vb2_queue_init(dst_vq);
}
static int ipu_csc_scaler_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct ipu_csc_scaler_ctx *ctx = container_of(ctrl->handler,
struct ipu_csc_scaler_ctx,
ctrl_hdlr);
enum ipu_rotate_mode rot_mode;
int rotate;
bool hflip, vflip;
int ret = 0;
rotate = ctx->rotate;
hflip = ctx->hflip;
vflip = ctx->vflip;
switch (ctrl->id) {
case V4L2_CID_HFLIP:
hflip = ctrl->val;
break;
case V4L2_CID_VFLIP:
vflip = ctrl->val;
break;
case V4L2_CID_ROTATE:
rotate = ctrl->val;
break;
default:
return -EINVAL;
}
ret = ipu_degrees_to_rot_mode(&rot_mode, rotate, hflip, vflip);
if (ret)
return ret;
if (rot_mode != ctx->rot_mode) {
struct v4l2_pix_format *in_fmt, *out_fmt;
struct ipu_image test_in, test_out;
in_fmt = &ctx->q_data[V4L2_M2M_SRC].cur_fmt;
out_fmt = &ctx->q_data[V4L2_M2M_DST].cur_fmt;
test_in.pix = *in_fmt;
test_out.pix = *out_fmt;
if (ipu_rot_mode_is_irt(rot_mode) !=
ipu_rot_mode_is_irt(ctx->rot_mode)) {
/* Switch width & height to keep aspect ratio intact */
test_out.pix.width = out_fmt->height;
test_out.pix.height = out_fmt->width;
}
ipu_image_convert_adjust(&test_in, &test_out, ctx->rot_mode);
/* Check if output format needs to be changed */
if (test_in.pix.width != in_fmt->width ||
test_in.pix.height != in_fmt->height ||
test_in.pix.bytesperline != in_fmt->bytesperline ||
test_in.pix.sizeimage != in_fmt->sizeimage) {
struct vb2_queue *out_q;
out_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
V4L2_BUF_TYPE_VIDEO_OUTPUT);
if (vb2_is_busy(out_q))
return -EBUSY;
}
/* Check if capture format needs to be changed */
if (test_out.pix.width != out_fmt->width ||
test_out.pix.height != out_fmt->height ||
test_out.pix.bytesperline != out_fmt->bytesperline ||
test_out.pix.sizeimage != out_fmt->sizeimage) {
struct vb2_queue *cap_q;
cap_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (vb2_is_busy(cap_q))
return -EBUSY;
}
*in_fmt = test_in.pix;
*out_fmt = test_out.pix;
ctx->rot_mode = rot_mode;
ctx->rotate = rotate;
ctx->hflip = hflip;
ctx->vflip = vflip;
}
return 0;
}
static const struct v4l2_ctrl_ops ipu_csc_scaler_ctrl_ops = {
.s_ctrl = ipu_csc_scaler_s_ctrl,
};
static int ipu_csc_scaler_init_controls(struct ipu_csc_scaler_ctx *ctx)
{
struct v4l2_ctrl_handler *hdlr = &ctx->ctrl_hdlr;
v4l2_ctrl_handler_init(hdlr, 3);
v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_HFLIP,
0, 1, 1, 0);
v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_VFLIP,
0, 1, 1, 0);
v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_ROTATE,
0, 270, 90, 0);
if (hdlr->error) {
v4l2_ctrl_handler_free(hdlr);
return hdlr->error;
}
v4l2_ctrl_handler_setup(hdlr);
return 0;
}
#define DEFAULT_WIDTH 720
#define DEFAULT_HEIGHT 576
static const struct ipu_csc_scaler_q_data ipu_csc_scaler_q_data_default = {
.cur_fmt = {
.width = DEFAULT_WIDTH,
.height = DEFAULT_HEIGHT,
.pixelformat = V4L2_PIX_FMT_YUV420,
.field = V4L2_FIELD_NONE,
.bytesperline = DEFAULT_WIDTH,
.sizeimage = DEFAULT_WIDTH * DEFAULT_HEIGHT * 3 / 2,
.colorspace = V4L2_COLORSPACE_SRGB,
},
.rect = {
.width = DEFAULT_WIDTH,
.height = DEFAULT_HEIGHT,
},
};
/*
* File operations
*/
static int ipu_csc_scaler_open(struct file *file)
{
struct ipu_csc_scaler_priv *priv = video_drvdata(file);
struct ipu_csc_scaler_ctx *ctx = NULL;
int ret;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->rot_mode = IPU_ROTATE_NONE;
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ctx->priv = priv;
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(priv->m2m_dev, ctx,
&ipu_csc_scaler_queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
goto err_ctx;
}
ret = ipu_csc_scaler_init_controls(ctx);
if (ret)
goto err_ctrls;
ctx->fh.ctrl_handler = &ctx->ctrl_hdlr;
ctx->q_data[V4L2_M2M_SRC] = ipu_csc_scaler_q_data_default;
ctx->q_data[V4L2_M2M_DST] = ipu_csc_scaler_q_data_default;
dev_dbg(priv->dev, "Created instance %p, m2m_ctx: %p\n", ctx,
ctx->fh.m2m_ctx);
return 0;
err_ctrls:
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
err_ctx:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return ret;
}
static int ipu_csc_scaler_release(struct file *file)
{
struct ipu_csc_scaler_priv *priv = video_drvdata(file);
struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(file->private_data);
dev_dbg(priv->dev, "Releasing instance %p\n", ctx);
v4l2_ctrl_handler_free(&ctx->ctrl_hdlr);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return 0;
}
static const struct v4l2_file_operations ipu_csc_scaler_fops = {
.owner = THIS_MODULE,
.open = ipu_csc_scaler_open,
.release = ipu_csc_scaler_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static const struct v4l2_m2m_ops m2m_ops = {
.device_run = device_run,
.job_abort = job_abort,
};
static void ipu_csc_scaler_video_device_release(struct video_device *vdev)
{
struct ipu_csc_scaler_priv *priv = video_get_drvdata(vdev);
v4l2_m2m_release(priv->m2m_dev);
video_device_release(vdev);
kfree(priv);
}
static const struct video_device ipu_csc_scaler_videodev_template = {
.name = "ipu_ic_pp csc/scaler",
.fops = &ipu_csc_scaler_fops,
.ioctl_ops = &ipu_csc_scaler_ioctl_ops,
.minor = -1,
.release = ipu_csc_scaler_video_device_release,
.vfl_dir = VFL_DIR_M2M,
.device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
};
int imx_media_csc_scaler_device_register(struct imx_media_video_dev *vdev)
{
struct ipu_csc_scaler_priv *priv = vdev_to_priv(vdev);
struct video_device *vfd = vdev->vfd;
int ret;
vfd->v4l2_dev = &priv->md->v4l2_dev;
ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
if (ret) {
v4l2_err(vfd->v4l2_dev, "Failed to register video device\n");
return ret;
}
v4l2_info(vfd->v4l2_dev, "Registered %s as /dev/%s\n", vfd->name,
video_device_node_name(vfd));
return 0;
}
void imx_media_csc_scaler_device_unregister(struct imx_media_video_dev *vdev)
{
struct ipu_csc_scaler_priv *priv = vdev_to_priv(vdev);
struct video_device *vfd = priv->vdev.vfd;
video_unregister_device(vfd);
}
struct imx_media_video_dev *
imx_media_csc_scaler_device_init(struct imx_media_dev *md)
{
struct ipu_csc_scaler_priv *priv;
struct video_device *vfd;
int ret;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return ERR_PTR(-ENOMEM);
priv->md = md;
priv->dev = md->md.dev;
mutex_init(&priv->mutex);
vfd = video_device_alloc();
if (!vfd) {
ret = -ENOMEM;
goto err_vfd;
}
*vfd = ipu_csc_scaler_videodev_template;
vfd->lock = &priv->mutex;
priv->vdev.vfd = vfd;
INIT_LIST_HEAD(&priv->vdev.list);
video_set_drvdata(vfd, priv);
priv->m2m_dev = v4l2_m2m_init(&m2m_ops);
if (IS_ERR(priv->m2m_dev)) {
ret = PTR_ERR(priv->m2m_dev);
v4l2_err(&md->v4l2_dev, "Failed to init mem2mem device: %d\n",
ret);
goto err_m2m;
}
return &priv->vdev;
err_m2m:
video_set_drvdata(vfd, NULL);
err_vfd:
kfree(priv);
return ERR_PTR(ret);
}
MODULE_DESCRIPTION("i.MX IPUv3 mem2mem scaler/CSC driver");
MODULE_AUTHOR("Sascha Hauer <[email protected]>");
MODULE_LICENSE("GPL");
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