// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) STMicroelectronics SA 2015
* Authors: Yannick Fertre <[email protected]>
* Hugues Fruchet <[email protected]>
*/
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-dma-contig.h>
#include "hva.h"
#include "hva-hw.h"
#define MIN_FRAMES 1
#define MIN_STREAMS 1
#define HVA_MIN_WIDTH 32
#define HVA_MAX_WIDTH 1920
#define HVA_MIN_HEIGHT 32
#define HVA_MAX_HEIGHT 1920
/* HVA requires a 16x16 pixels alignment for frames */
#define HVA_WIDTH_ALIGNMENT 16
#define HVA_HEIGHT_ALIGNMENT 16
#define HVA_DEFAULT_WIDTH HVA_MIN_WIDTH
#define HVA_DEFAULT_HEIGHT HVA_MIN_HEIGHT
#define HVA_DEFAULT_FRAME_NUM 1
#define HVA_DEFAULT_FRAME_DEN 30
#define to_type_str(type) (type == V4L2_BUF_TYPE_VIDEO_OUTPUT ? \
"frame" : "stream")
#define fh_to_ctx(f) (container_of(f, struct hva_ctx, fh))
/* registry of available encoders */
static const struct hva_enc *hva_encoders[] = {
&nv12h264enc,
&nv21h264enc,
};
static inline int frame_size(u32 w, u32 h, u32 fmt)
{
switch (fmt) {
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
return (w * h * 3) / 2;
default:
return 0;
}
}
static inline int frame_stride(u32 w, u32 fmt)
{
switch (fmt) {
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
return w;
default:
return 0;
}
}
static inline int frame_alignment(u32 fmt)
{
switch (fmt) {
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
/* multiple of 2 */
return 2;
default:
return 1;
}
}
static inline int estimated_stream_size(u32 w, u32 h)
{
/*
* HVA only encodes in YUV420 format, whatever the frame format.
* A compression ratio of 2 is assumed: thus, the maximum size
* of a stream is estimated to ((width x height x 3 / 2) / 2)
*/
return (w * h * 3) / 4;
}
static void set_default_params(struct hva_ctx *ctx)
{
struct hva_frameinfo *frameinfo = &ctx->frameinfo;
struct hva_streaminfo *streaminfo = &ctx->streaminfo;
frameinfo->pixelformat = V4L2_PIX_FMT_NV12;
frameinfo->width = HVA_DEFAULT_WIDTH;
frameinfo->height = HVA_DEFAULT_HEIGHT;
frameinfo->aligned_width = ALIGN(frameinfo->width,
HVA_WIDTH_ALIGNMENT);
frameinfo->aligned_height = ALIGN(frameinfo->height,
HVA_HEIGHT_ALIGNMENT);
frameinfo->size = frame_size(frameinfo->aligned_width,
frameinfo->aligned_height,
frameinfo->pixelformat);
streaminfo->streamformat = V4L2_PIX_FMT_H264;
streaminfo->width = HVA_DEFAULT_WIDTH;
streaminfo->height = HVA_DEFAULT_HEIGHT;
ctx->colorspace = V4L2_COLORSPACE_REC709;
ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
ctx->max_stream_size = estimated_stream_size(streaminfo->width,
streaminfo->height);
}
static const struct hva_enc *hva_find_encoder(struct hva_ctx *ctx,
u32 pixelformat,
u32 streamformat)
{
struct hva_dev *hva = ctx_to_hdev(ctx);
const struct hva_enc *enc;
unsigned int i;
for (i = 0; i < hva->nb_of_encoders; i++) {
enc = hva->encoders[i];
if ((enc->pixelformat == pixelformat) &&
(enc->streamformat == streamformat))
return enc;
}
return NULL;
}
static void register_format(u32 format, u32 formats[], u32 *nb_of_formats)
{
u32 i;
bool found = false;
for (i = 0; i < *nb_of_formats; i++) {
if (format == formats[i]) {
found = true;
break;
}
}
if (!found)
formats[(*nb_of_formats)++] = format;
}
static void register_formats(struct hva_dev *hva)
{
unsigned int i;
for (i = 0; i < hva->nb_of_encoders; i++) {
register_format(hva->encoders[i]->pixelformat,
hva->pixelformats,
&hva->nb_of_pixelformats);
register_format(hva->encoders[i]->streamformat,
hva->streamformats,
&hva->nb_of_streamformats);
}
}
static void register_encoders(struct hva_dev *hva)
{
struct device *dev = hva_to_dev(hva);
unsigned int i;
for (i = 0; i < ARRAY_SIZE(hva_encoders); i++) {
if (hva->nb_of_encoders >= HVA_MAX_ENCODERS) {
dev_dbg(dev,
"%s failed to register %s encoder (%d maximum reached)\n",
HVA_PREFIX, hva_encoders[i]->name,
HVA_MAX_ENCODERS);
return;
}
hva->encoders[hva->nb_of_encoders++] = hva_encoders[i];
dev_info(dev, "%s %s encoder registered\n", HVA_PREFIX,
hva_encoders[i]->name);
}
}
static int hva_open_encoder(struct hva_ctx *ctx, u32 streamformat,
u32 pixelformat, struct hva_enc **penc)
{
struct hva_dev *hva = ctx_to_hdev(ctx);
struct device *dev = ctx_to_dev(ctx);
struct hva_enc *enc;
int ret;
/* find an encoder which can deal with these formats */
enc = (struct hva_enc *)hva_find_encoder(ctx, pixelformat,
streamformat);
if (!enc) {
dev_err(dev, "%s no encoder found matching %4.4s => %4.4s\n",
ctx->name, (char *)&pixelformat, (char *)&streamformat);
return -EINVAL;
}
dev_dbg(dev, "%s one encoder matching %4.4s => %4.4s\n",
ctx->name, (char *)&pixelformat, (char *)&streamformat);
/* update instance name */
snprintf(ctx->name, sizeof(ctx->name), "[%3d:%4.4s]",
hva->instance_id, (char *)&streamformat);
/* open encoder instance */
ret = enc->open(ctx);
if (ret) {
dev_err(dev, "%s failed to open encoder instance (%d)\n",
ctx->name, ret);
return ret;
}
dev_dbg(dev, "%s %s encoder opened\n", ctx->name, enc->name);
*penc = enc;
return ret;
}
static void hva_dbg_summary(struct hva_ctx *ctx)
{
struct device *dev = ctx_to_dev(ctx);
struct hva_streaminfo *stream = &ctx->streaminfo;
struct hva_frameinfo *frame = &ctx->frameinfo;
if (!(ctx->flags & HVA_FLAG_STREAMINFO))
return;
dev_dbg(dev, "%s %4.4s %dx%d > %4.4s %dx%d %s %s: %d frames encoded, %d system errors, %d encoding errors, %d frame errors\n",
ctx->name,
(char *)&frame->pixelformat,
frame->aligned_width, frame->aligned_height,
(char *)&stream->streamformat,
stream->width, stream->height,
stream->profile, stream->level,
ctx->encoded_frames,
ctx->sys_errors,
ctx->encode_errors,
ctx->frame_errors);
}
/*
* V4L2 ioctl operations
*/
static int hva_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct hva_dev *hva = ctx_to_hdev(ctx);
strscpy(cap->driver, HVA_NAME, sizeof(cap->driver));
strscpy(cap->card, hva->vdev->name, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
hva->pdev->name);
return 0;
}
static int hva_enum_fmt_stream(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct hva_dev *hva = ctx_to_hdev(ctx);
if (unlikely(f->index >= hva->nb_of_streamformats))
return -EINVAL;
f->pixelformat = hva->streamformats[f->index];
return 0;
}
static int hva_enum_fmt_frame(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct hva_dev *hva = ctx_to_hdev(ctx);
if (unlikely(f->index >= hva->nb_of_pixelformats))
return -EINVAL;
f->pixelformat = hva->pixelformats[f->index];
return 0;
}
static int hva_g_fmt_stream(struct file *file, void *fh, struct v4l2_format *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct hva_streaminfo *streaminfo = &ctx->streaminfo;
f->fmt.pix.width = streaminfo->width;
f->fmt.pix.height = streaminfo->height;
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.colorspace = ctx->colorspace;
f->fmt.pix.xfer_func = ctx->xfer_func;
f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
f->fmt.pix.quantization = ctx->quantization;
f->fmt.pix.pixelformat = streaminfo->streamformat;
f->fmt.pix.bytesperline = 0;
f->fmt.pix.sizeimage = ctx->max_stream_size;
return 0;
}
static int hva_g_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct hva_frameinfo *frameinfo = &ctx->frameinfo;
f->fmt.pix.width = frameinfo->width;
f->fmt.pix.height = frameinfo->height;
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.colorspace = ctx->colorspace;
f->fmt.pix.xfer_func = ctx->xfer_func;
f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
f->fmt.pix.quantization = ctx->quantization;
f->fmt.pix.pixelformat = frameinfo->pixelformat;
f->fmt.pix.bytesperline = frame_stride(frameinfo->aligned_width,
frameinfo->pixelformat);
f->fmt.pix.sizeimage = frameinfo->size;
return 0;
}
static int hva_try_fmt_stream(struct file *file, void *priv,
struct v4l2_format *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct device *dev = ctx_to_dev(ctx);
struct v4l2_pix_format *pix = &f->fmt.pix;
u32 streamformat = pix->pixelformat;
const struct hva_enc *enc;
u32 width, height;
u32 stream_size;
enc = hva_find_encoder(ctx, ctx->frameinfo.pixelformat, streamformat);
if (!enc) {
dev_dbg(dev,
"%s V4L2 TRY_FMT (CAPTURE): unsupported format %.4s\n",
ctx->name, (char *)&pix->pixelformat);
return -EINVAL;
}
width = pix->width;
height = pix->height;
if (ctx->flags & HVA_FLAG_FRAMEINFO) {
/*
* if the frame resolution is already fixed, only allow the
* same stream resolution
*/
pix->width = ctx->frameinfo.width;
pix->height = ctx->frameinfo.height;
if ((pix->width != width) || (pix->height != height))
dev_dbg(dev,
"%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit frame resolution\n",
ctx->name, width, height,
pix->width, pix->height);
} else {
/* adjust width & height */
v4l_bound_align_image(&pix->width,
HVA_MIN_WIDTH, enc->max_width,
0,
&pix->height,
HVA_MIN_HEIGHT, enc->max_height,
0,
0);
if ((pix->width != width) || (pix->height != height))
dev_dbg(dev,
"%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
ctx->name, width, height,
pix->width, pix->height);
}
stream_size = estimated_stream_size(pix->width, pix->height);
if (pix->sizeimage < stream_size)
pix->sizeimage = stream_size;
pix->bytesperline = 0;
pix->colorspace = ctx->colorspace;
pix->xfer_func = ctx->xfer_func;
pix->ycbcr_enc = ctx->ycbcr_enc;
pix->quantization = ctx->quantization;
pix->field = V4L2_FIELD_NONE;
return 0;
}
static int hva_try_fmt_frame(struct file *file, void *priv,
struct v4l2_format *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct device *dev = ctx_to_dev(ctx);
struct v4l2_pix_format *pix = &f->fmt.pix;
u32 pixelformat = pix->pixelformat;
const struct hva_enc *enc;
u32 width, height;
enc = hva_find_encoder(ctx, pixelformat, ctx->streaminfo.streamformat);
if (!enc) {
dev_dbg(dev,
"%s V4L2 TRY_FMT (OUTPUT): unsupported format %.4s\n",
ctx->name, (char *)&pixelformat);
return -EINVAL;
}
/* adjust width & height */
width = pix->width;
height = pix->height;
v4l_bound_align_image(&pix->width,
HVA_MIN_WIDTH, HVA_MAX_WIDTH,
frame_alignment(pixelformat) - 1,
&pix->height,
HVA_MIN_HEIGHT, HVA_MAX_HEIGHT,
frame_alignment(pixelformat) - 1,
0);
if ((pix->width != width) || (pix->height != height))
dev_dbg(dev,
"%s V4L2 TRY_FMT (OUTPUT): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
ctx->name, width, height, pix->width, pix->height);
width = ALIGN(pix->width, HVA_WIDTH_ALIGNMENT);
height = ALIGN(pix->height, HVA_HEIGHT_ALIGNMENT);
if (!pix->colorspace) {
pix->colorspace = V4L2_COLORSPACE_REC709;
pix->xfer_func = V4L2_XFER_FUNC_DEFAULT;
pix->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
pix->quantization = V4L2_QUANTIZATION_DEFAULT;
}
pix->bytesperline = frame_stride(width, pixelformat);
pix->sizeimage = frame_size(width, height, pixelformat);
pix->field = V4L2_FIELD_NONE;
return 0;
}
static int hva_s_fmt_stream(struct file *file, void *fh, struct v4l2_format *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct device *dev = ctx_to_dev(ctx);
struct vb2_queue *vq;
int ret;
ret = hva_try_fmt_stream(file, fh, f);
if (ret) {
dev_dbg(dev, "%s V4L2 S_FMT (CAPTURE): unsupported format %.4s\n",
ctx->name, (char *)&f->fmt.pix.pixelformat);
return ret;
}
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (vb2_is_streaming(vq)) {
dev_dbg(dev, "%s V4L2 S_FMT (CAPTURE): queue busy\n",
ctx->name);
return -EBUSY;
}
ctx->max_stream_size = f->fmt.pix.sizeimage;
ctx->streaminfo.width = f->fmt.pix.width;
ctx->streaminfo.height = f->fmt.pix.height;
ctx->streaminfo.streamformat = f->fmt.pix.pixelformat;
ctx->flags |= HVA_FLAG_STREAMINFO;
return 0;
}
static int hva_s_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct device *dev = ctx_to_dev(ctx);
struct v4l2_pix_format *pix = &f->fmt.pix;
struct vb2_queue *vq;
int ret;
ret = hva_try_fmt_frame(file, fh, f);
if (ret) {
dev_dbg(dev, "%s V4L2 S_FMT (OUTPUT): unsupported format %.4s\n",
ctx->name, (char *)&pix->pixelformat);
return ret;
}
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (vb2_is_streaming(vq)) {
dev_dbg(dev, "%s V4L2 S_FMT (OUTPUT): queue busy\n", ctx->name);
return -EBUSY;
}
ctx->colorspace = pix->colorspace;
ctx->xfer_func = pix->xfer_func;
ctx->ycbcr_enc = pix->ycbcr_enc;
ctx->quantization = pix->quantization;
ctx->frameinfo.aligned_width = ALIGN(pix->width, HVA_WIDTH_ALIGNMENT);
ctx->frameinfo.aligned_height = ALIGN(pix->height,
HVA_HEIGHT_ALIGNMENT);
ctx->frameinfo.size = pix->sizeimage;
ctx->frameinfo.pixelformat = pix->pixelformat;
ctx->frameinfo.width = pix->width;
ctx->frameinfo.height = pix->height;
ctx->flags |= HVA_FLAG_FRAMEINFO;
return 0;
}
static int hva_g_parm(struct file *file, void *fh, struct v4l2_streamparm *sp)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct v4l2_fract *time_per_frame = &ctx->ctrls.time_per_frame;
if (sp->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
sp->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
sp->parm.output.timeperframe.numerator = time_per_frame->numerator;
sp->parm.output.timeperframe.denominator =
time_per_frame->denominator;
return 0;
}
static int hva_s_parm(struct file *file, void *fh, struct v4l2_streamparm *sp)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct v4l2_fract *time_per_frame = &ctx->ctrls.time_per_frame;
if (sp->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
if (!sp->parm.output.timeperframe.numerator ||
!sp->parm.output.timeperframe.denominator)
return hva_g_parm(file, fh, sp);
sp->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
time_per_frame->numerator = sp->parm.output.timeperframe.numerator;
time_per_frame->denominator =
sp->parm.output.timeperframe.denominator;
return 0;
}
static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct device *dev = ctx_to_dev(ctx);
if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
/*
* depending on the targeted compressed video format, the
* capture buffer might contain headers (e.g. H.264 SPS/PPS)
* filled in by the driver client; the size of these data is
* copied from the bytesused field of the V4L2 buffer in the
* payload field of the hva stream buffer
*/
struct vb2_queue *vq;
struct hva_stream *stream;
struct vb2_buffer *vb2_buf;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
vb2_buf = vb2_get_buffer(vq, buf->index);
if (!vb2_buf) {
dev_dbg(dev, "%s buffer index %d not found\n", ctx->name, buf->index);
return -EINVAL;
}
stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
stream->bytesused = buf->bytesused;
}
return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
}
/* V4L2 ioctl ops */
static const struct v4l2_ioctl_ops hva_ioctl_ops = {
.vidioc_querycap = hva_querycap,
.vidioc_enum_fmt_vid_cap = hva_enum_fmt_stream,
.vidioc_enum_fmt_vid_out = hva_enum_fmt_frame,
.vidioc_g_fmt_vid_cap = hva_g_fmt_stream,
.vidioc_g_fmt_vid_out = hva_g_fmt_frame,
.vidioc_try_fmt_vid_cap = hva_try_fmt_stream,
.vidioc_try_fmt_vid_out = hva_try_fmt_frame,
.vidioc_s_fmt_vid_cap = hva_s_fmt_stream,
.vidioc_s_fmt_vid_out = hva_s_fmt_frame,
.vidioc_g_parm = hva_g_parm,
.vidioc_s_parm = hva_s_parm,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_qbuf = hva_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.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,
};
/*
* V4L2 control operations
*/
static int hva_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct hva_ctx *ctx = container_of(ctrl->handler, struct hva_ctx,
ctrl_handler);
struct device *dev = ctx_to_dev(ctx);
dev_dbg(dev, "%s S_CTRL: id = %d, val = %d\n", ctx->name,
ctrl->id, ctrl->val);
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
ctx->ctrls.bitrate_mode = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
ctx->ctrls.gop_size = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_BITRATE:
ctx->ctrls.bitrate = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_ASPECT:
ctx->ctrls.aspect = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
ctx->ctrls.profile = ctrl->val;
snprintf(ctx->streaminfo.profile,
sizeof(ctx->streaminfo.profile),
"%s profile",
v4l2_ctrl_get_menu(ctrl->id)[ctrl->val]);
break;
case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
ctx->ctrls.level = ctrl->val;
snprintf(ctx->streaminfo.level,
sizeof(ctx->streaminfo.level),
"level %s",
v4l2_ctrl_get_menu(ctrl->id)[ctrl->val]);
break;
case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
ctx->ctrls.entropy_mode = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:
ctx->ctrls.cpb_size = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
ctx->ctrls.dct8x8 = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
ctx->ctrls.qpmin = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
ctx->ctrls.qpmax = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
ctx->ctrls.vui_sar = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
ctx->ctrls.vui_sar_idc = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING:
ctx->ctrls.sei_fp = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
ctx->ctrls.sei_fp_type = ctrl->val;
break;
default:
dev_dbg(dev, "%s S_CTRL: invalid control (id = %d)\n",
ctx->name, ctrl->id);
return -EINVAL;
}
return 0;
}
/* V4L2 control ops */
static const struct v4l2_ctrl_ops hva_ctrl_ops = {
.s_ctrl = hva_s_ctrl,
};
static int hva_ctrls_setup(struct hva_ctx *ctx)
{
struct device *dev = ctx_to_dev(ctx);
u64 mask;
enum v4l2_mpeg_video_h264_sei_fp_arrangement_type sei_fp_type =
V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TOP_BOTTOM;
v4l2_ctrl_handler_init(&ctx->ctrl_handler, 15);
v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
0,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_GOP_SIZE,
1, 60, 1, 16);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE,
1000, 60000000, 1000, 20000000);
mask = ~(1 << V4L2_MPEG_VIDEO_ASPECT_1x1);
v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_ASPECT,
V4L2_MPEG_VIDEO_ASPECT_1x1,
mask,
V4L2_MPEG_VIDEO_ASPECT_1x1);
mask = ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
(1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
(1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH) |
(1 << V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH));
v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_PROFILE,
V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH,
mask,
V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_LEVEL,
V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
0,
V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE,
V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC,
0,
V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE,
1, 10000, 1, 3000);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM,
0, 1, 1, 0);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_MIN_QP,
0, 51, 1, 5);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_MAX_QP,
0, 51, 1, 51);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE,
0, 1, 1, 1);
mask = ~(1 << V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1);
v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC,
V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1,
mask,
V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1);
v4l2_ctrl_new_std(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING,
0, 1, 1, 0);
mask = ~(1 << sei_fp_type);
v4l2_ctrl_new_std_menu(&ctx->ctrl_handler, &hva_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE,
sei_fp_type,
mask,
sei_fp_type);
if (ctx->ctrl_handler.error) {
int err = ctx->ctrl_handler.error;
dev_dbg(dev, "%s controls setup failed (%d)\n",
ctx->name, err);
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
return err;
}
v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
/* set default time per frame */
ctx->ctrls.time_per_frame.numerator = HVA_DEFAULT_FRAME_NUM;
ctx->ctrls.time_per_frame.denominator = HVA_DEFAULT_FRAME_DEN;
return 0;
}
/*
* mem-to-mem operations
*/
static void hva_run_work(struct work_struct *work)
{
struct hva_ctx *ctx = container_of(work, struct hva_ctx, run_work);
struct vb2_v4l2_buffer *src_buf, *dst_buf;
const struct hva_enc *enc = ctx->enc;
struct hva_frame *frame;
struct hva_stream *stream;
int ret;
/* protect instance against reentrancy */
mutex_lock(&ctx->lock);
#ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
hva_dbg_perf_begin(ctx);
#endif
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
frame = to_hva_frame(src_buf);
stream = to_hva_stream(dst_buf);
frame->vbuf.sequence = ctx->frame_num++;
ret = enc->encode(ctx, frame, stream);
vb2_set_plane_payload(&dst_buf->vb2_buf, 0, stream->bytesused);
if (ret) {
v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
} else {
/* propagate frame timestamp */
dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
dst_buf->field = V4L2_FIELD_NONE;
dst_buf->sequence = ctx->stream_num - 1;
ctx->encoded_frames++;
#ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
hva_dbg_perf_end(ctx, stream);
#endif
v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
}
mutex_unlock(&ctx->lock);
v4l2_m2m_job_finish(ctx->hva_dev->m2m_dev, ctx->fh.m2m_ctx);
}
static void hva_device_run(void *priv)
{
struct hva_ctx *ctx = priv;
struct hva_dev *hva = ctx_to_hdev(ctx);
queue_work(hva->work_queue, &ctx->run_work);
}
static void hva_job_abort(void *priv)
{
struct hva_ctx *ctx = priv;
struct device *dev = ctx_to_dev(ctx);
dev_dbg(dev, "%s aborting job\n", ctx->name);
ctx->aborting = true;
}
static int hva_job_ready(void *priv)
{
struct hva_ctx *ctx = priv;
struct device *dev = ctx_to_dev(ctx);
if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx)) {
dev_dbg(dev, "%s job not ready: no frame buffers\n",
ctx->name);
return 0;
}
if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
dev_dbg(dev, "%s job not ready: no stream buffers\n",
ctx->name);
return 0;
}
if (ctx->aborting) {
dev_dbg(dev, "%s job not ready: aborting\n", ctx->name);
return 0;
}
return 1;
}
/* mem-to-mem ops */
static const struct v4l2_m2m_ops hva_m2m_ops = {
.device_run = hva_device_run,
.job_abort = hva_job_abort,
.job_ready = hva_job_ready,
};
/*
* VB2 queue operations
*/
static int hva_queue_setup(struct vb2_queue *vq,
unsigned int *num_buffers, unsigned int *num_planes,
unsigned int sizes[], struct device *alloc_devs[])
{
struct hva_ctx *ctx = vb2_get_drv_priv(vq);
struct device *dev = ctx_to_dev(ctx);
unsigned int size;
dev_dbg(dev, "%s %s queue setup: num_buffers %d\n", ctx->name,
to_type_str(vq->type), *num_buffers);
size = vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ?
ctx->frameinfo.size : ctx->max_stream_size;
if (*num_planes)
return sizes[0] < size ? -EINVAL : 0;
/* only one plane supported */
*num_planes = 1;
sizes[0] = size;
return 0;
}
static int hva_buf_prepare(struct vb2_buffer *vb)
{
struct hva_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct device *dev = ctx_to_dev(ctx);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
struct hva_frame *frame = to_hva_frame(vbuf);
if (vbuf->field == V4L2_FIELD_ANY)
vbuf->field = V4L2_FIELD_NONE;
if (vbuf->field != V4L2_FIELD_NONE) {
dev_dbg(dev,
"%s frame[%d] prepare: %d field not supported\n",
ctx->name, vb->index, vbuf->field);
return -EINVAL;
}
if (!frame->prepared) {
/* get memory addresses */
frame->vaddr = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
frame->paddr = vb2_dma_contig_plane_dma_addr(
&vbuf->vb2_buf, 0);
frame->info = ctx->frameinfo;
frame->prepared = true;
dev_dbg(dev,
"%s frame[%d] prepared; virt=%p, phy=%pad\n",
ctx->name, vb->index,
frame->vaddr, &frame->paddr);
}
} else {
struct hva_stream *stream = to_hva_stream(vbuf);
if (!stream->prepared) {
/* get memory addresses */
stream->vaddr = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
stream->paddr = vb2_dma_contig_plane_dma_addr(
&vbuf->vb2_buf, 0);
stream->size = vb2_plane_size(&vbuf->vb2_buf, 0);
stream->prepared = true;
dev_dbg(dev,
"%s stream[%d] prepared; virt=%p, phy=%pad\n",
ctx->name, vb->index,
stream->vaddr, &stream->paddr);
}
}
return 0;
}
static void hva_buf_queue(struct vb2_buffer *vb)
{
struct hva_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
if (ctx->fh.m2m_ctx)
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}
static int hva_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct hva_ctx *ctx = vb2_get_drv_priv(vq);
struct hva_dev *hva = ctx_to_hdev(ctx);
struct device *dev = ctx_to_dev(ctx);
struct vb2_v4l2_buffer *vbuf;
int ret;
unsigned int i;
bool found = false;
dev_dbg(dev, "%s %s start streaming\n", ctx->name,
to_type_str(vq->type));
/* open encoder when both start_streaming have been called */
if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
if (!vb2_start_streaming_called(&ctx->fh.m2m_ctx->cap_q_ctx.q))
return 0;
} else {
if (!vb2_start_streaming_called(&ctx->fh.m2m_ctx->out_q_ctx.q))
return 0;
}
/* store the instance context in the instances array */
for (i = 0; i < HVA_MAX_INSTANCES; i++) {
if (!hva->instances[i]) {
hva->instances[i] = ctx;
/* save the context identifier in the context */
ctx->id = i;
found = true;
break;
}
}
if (!found) {
dev_err(dev, "%s maximum instances reached\n", ctx->name);
ret = -ENOMEM;
goto err;
}
hva->nb_of_instances++;
if (!ctx->enc) {
ret = hva_open_encoder(ctx,
ctx->streaminfo.streamformat,
ctx->frameinfo.pixelformat,
&ctx->enc);
if (ret < 0)
goto err_ctx;
}
return 0;
err_ctx:
hva->instances[ctx->id] = NULL;
hva->nb_of_instances--;
err:
if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
/* return of all pending buffers to vb2 (in queued state) */
while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
} else {
/* return of all pending buffers to vb2 (in queued state) */
while ((vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
}
ctx->sys_errors++;
return ret;
}
static void hva_stop_streaming(struct vb2_queue *vq)
{
struct hva_ctx *ctx = vb2_get_drv_priv(vq);
struct hva_dev *hva = ctx_to_hdev(ctx);
struct device *dev = ctx_to_dev(ctx);
const struct hva_enc *enc = ctx->enc;
struct vb2_v4l2_buffer *vbuf;
dev_dbg(dev, "%s %s stop streaming\n", ctx->name,
to_type_str(vq->type));
if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
/* return of all pending buffers to vb2 (in error state) */
ctx->frame_num = 0;
while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
} else {
/* return of all pending buffers to vb2 (in error state) */
ctx->stream_num = 0;
while ((vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
}
if ((V4L2_TYPE_IS_OUTPUT(vq->type) &&
vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q)) ||
(V4L2_TYPE_IS_CAPTURE(vq->type) &&
vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))) {
dev_dbg(dev, "%s %s out=%d cap=%d\n",
ctx->name, to_type_str(vq->type),
vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q),
vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q));
return;
}
/* close encoder when both stop_streaming have been called */
if (enc) {
dev_dbg(dev, "%s %s encoder closed\n", ctx->name, enc->name);
enc->close(ctx);
ctx->enc = NULL;
/* clear instance context in instances array */
hva->instances[ctx->id] = NULL;
hva->nb_of_instances--;
}
ctx->aborting = false;
}
/* VB2 queue ops */
static const struct vb2_ops hva_qops = {
.queue_setup = hva_queue_setup,
.buf_prepare = hva_buf_prepare,
.buf_queue = hva_buf_queue,
.start_streaming = hva_start_streaming,
.stop_streaming = hva_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
/*
* V4L2 file operations
*/
static int queue_init(struct hva_ctx *ctx, struct vb2_queue *vq)
{
vq->io_modes = VB2_MMAP | VB2_DMABUF;
vq->drv_priv = ctx;
vq->ops = &hva_qops;
vq->mem_ops = &vb2_dma_contig_memops;
vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
vq->lock = &ctx->hva_dev->lock;
return vb2_queue_init(vq);
}
static int hva_queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct hva_ctx *ctx = priv;
int ret;
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
src_vq->buf_struct_size = sizeof(struct hva_frame);
src_vq->min_queued_buffers = MIN_FRAMES;
src_vq->dev = ctx->hva_dev->dev;
ret = queue_init(ctx, src_vq);
if (ret)
return ret;
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
dst_vq->buf_struct_size = sizeof(struct hva_stream);
dst_vq->min_queued_buffers = MIN_STREAMS;
dst_vq->dev = ctx->hva_dev->dev;
return queue_init(ctx, dst_vq);
}
static int hva_open(struct file *file)
{
struct hva_dev *hva = video_drvdata(file);
struct device *dev = hva_to_dev(hva);
struct hva_ctx *ctx;
int ret;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
ret = -ENOMEM;
goto out;
}
ctx->hva_dev = hva;
INIT_WORK(&ctx->run_work, hva_run_work);
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ret = hva_ctrls_setup(ctx);
if (ret) {
dev_err(dev, "%s [x:x] failed to setup controls\n",
HVA_PREFIX);
ctx->sys_errors++;
goto err_fh;
}
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
mutex_init(&ctx->lock);
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(hva->m2m_dev, ctx,
&hva_queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
dev_err(dev, "%s failed to initialize m2m context (%d)\n",
HVA_PREFIX, ret);
ctx->sys_errors++;
goto err_ctrls;
}
/* set the instance name */
mutex_lock(&hva->lock);
hva->instance_id++;
snprintf(ctx->name, sizeof(ctx->name), "[%3d:----]",
hva->instance_id);
mutex_unlock(&hva->lock);
/* default parameters for frame and stream */
set_default_params(ctx);
#ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
hva_dbg_ctx_create(ctx);
#endif
dev_info(dev, "%s encoder instance created\n", ctx->name);
return 0;
err_ctrls:
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
err_fh:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
out:
return ret;
}
static int hva_release(struct file *file)
{
struct hva_ctx *ctx = fh_to_ctx(file->private_data);
struct hva_dev *hva = ctx_to_hdev(ctx);
struct device *dev = ctx_to_dev(ctx);
const struct hva_enc *enc = ctx->enc;
if (enc) {
dev_dbg(dev, "%s %s encoder closed\n", ctx->name, enc->name);
enc->close(ctx);
ctx->enc = NULL;
/* clear instance context in instances array */
hva->instances[ctx->id] = NULL;
hva->nb_of_instances--;
}
/* trace a summary of instance before closing (debug purpose) */
hva_dbg_summary(ctx);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
#ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
hva_dbg_ctx_remove(ctx);
#endif
dev_info(dev, "%s encoder instance released\n", ctx->name);
kfree(ctx);
return 0;
}
/* V4L2 file ops */
static const struct v4l2_file_operations hva_fops = {
.owner = THIS_MODULE,
.open = hva_open,
.release = hva_release,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
.poll = v4l2_m2m_fop_poll,
};
/*
* Platform device operations
*/
static int hva_register_device(struct hva_dev *hva)
{
int ret;
struct video_device *vdev;
struct device *dev;
if (!hva)
return -ENODEV;
dev = hva_to_dev(hva);
hva->m2m_dev = v4l2_m2m_init(&hva_m2m_ops);
if (IS_ERR(hva->m2m_dev)) {
dev_err(dev, "%s failed to initialize v4l2-m2m device\n",
HVA_PREFIX);
ret = PTR_ERR(hva->m2m_dev);
goto err;
}
vdev = video_device_alloc();
if (!vdev) {
dev_err(dev, "%s failed to allocate video device\n",
HVA_PREFIX);
ret = -ENOMEM;
goto err_m2m_release;
}
vdev->fops = &hva_fops;
vdev->ioctl_ops = &hva_ioctl_ops;
vdev->release = video_device_release;
vdev->lock = &hva->lock;
vdev->vfl_dir = VFL_DIR_M2M;
vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
vdev->v4l2_dev = &hva->v4l2_dev;
snprintf(vdev->name, sizeof(vdev->name), "%s%lx", HVA_NAME,
hva->ip_version);
ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
if (ret) {
dev_err(dev, "%s failed to register video device\n",
HVA_PREFIX);
goto err_vdev_release;
}
hva->vdev = vdev;
video_set_drvdata(vdev, hva);
return 0;
err_vdev_release:
video_device_release(vdev);
err_m2m_release:
v4l2_m2m_release(hva->m2m_dev);
err:
return ret;
}
static void hva_unregister_device(struct hva_dev *hva)
{
if (!hva)
return;
if (hva->m2m_dev)
v4l2_m2m_release(hva->m2m_dev);
video_unregister_device(hva->vdev);
}
static int hva_probe(struct platform_device *pdev)
{
struct hva_dev *hva;
struct device *dev = &pdev->dev;
int ret;
hva = devm_kzalloc(dev, sizeof(*hva), GFP_KERNEL);
if (!hva) {
ret = -ENOMEM;
goto err;
}
ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (ret)
return ret;
hva->dev = dev;
hva->pdev = pdev;
platform_set_drvdata(pdev, hva);
mutex_init(&hva->lock);
/* probe hardware */
ret = hva_hw_probe(pdev, hva);
if (ret)
goto err;
/* register all available encoders */
register_encoders(hva);
/* register all supported formats */
register_formats(hva);
/* register on V4L2 */
ret = v4l2_device_register(dev, &hva->v4l2_dev);
if (ret) {
dev_err(dev, "%s %s failed to register V4L2 device\n",
HVA_PREFIX, HVA_NAME);
goto err_hw;
}
#ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
hva_debugfs_create(hva);
#endif
hva->work_queue = create_workqueue(HVA_NAME);
if (!hva->work_queue) {
dev_err(dev, "%s %s failed to allocate work queue\n",
HVA_PREFIX, HVA_NAME);
ret = -ENOMEM;
goto err_v4l2;
}
/* register device */
ret = hva_register_device(hva);
if (ret)
goto err_work_queue;
dev_info(dev, "%s %s registered as /dev/video%d\n", HVA_PREFIX,
HVA_NAME, hva->vdev->num);
return 0;
err_work_queue:
destroy_workqueue(hva->work_queue);
err_v4l2:
#ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
hva_debugfs_remove(hva);
#endif
v4l2_device_unregister(&hva->v4l2_dev);
err_hw:
hva_hw_remove(hva);
err:
return ret;
}
static void hva_remove(struct platform_device *pdev)
{
struct hva_dev *hva = platform_get_drvdata(pdev);
struct device *dev = hva_to_dev(hva);
hva_unregister_device(hva);
destroy_workqueue(hva->work_queue);
hva_hw_remove(hva);
#ifdef CONFIG_VIDEO_STI_HVA_DEBUGFS
hva_debugfs_remove(hva);
#endif
v4l2_device_unregister(&hva->v4l2_dev);
dev_info(dev, "%s %s removed\n", HVA_PREFIX, pdev->name);
}
/* PM ops */
static const struct dev_pm_ops hva_pm_ops = {
.runtime_suspend = hva_hw_runtime_suspend,
.runtime_resume = hva_hw_runtime_resume,
};
static const struct of_device_id hva_match_types[] = {
{
.compatible = "st,st-hva",
},
{ /* end node */ }
};
MODULE_DEVICE_TABLE(of, hva_match_types);
static struct platform_driver hva_driver = {
.probe = hva_probe,
.remove_new = hva_remove,
.driver = {
.name = HVA_NAME,
.of_match_table = hva_match_types,
.pm = &hva_pm_ops,
},
};
module_platform_driver(hva_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Yannick Fertre <[email protected]>");
MODULE_DESCRIPTION("STMicroelectronics HVA video encoder V4L2 driver");
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