// SPDX-License-Identifier: GPL-2.0
/*
* Rockchip Video Decoder driver
*
* Copyright (C) 2019 Collabora, Ltd.
*
* Based on rkvdec driver by Google LLC. (Tomasz Figa <[email protected]>)
* Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
* Copyright (C) 2011 Samsung Electronics Co., Ltd.
*/
#include <linux/clk.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/workqueue.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-core.h>
#include <media/videobuf2-vmalloc.h>
#include "rkvdec.h"
#include "rkvdec-regs.h"
static int rkvdec_try_ctrl(struct v4l2_ctrl *ctrl)
{
struct rkvdec_ctx *ctx = container_of(ctrl->handler, struct rkvdec_ctx, ctrl_hdl);
const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
if (desc->ops->try_ctrl)
return desc->ops->try_ctrl(ctx, ctrl);
return 0;
}
static const struct v4l2_ctrl_ops rkvdec_ctrl_ops = {
.try_ctrl = rkvdec_try_ctrl,
};
static const struct rkvdec_ctrl_desc rkvdec_h264_ctrl_descs[] = {
{
.cfg.id = V4L2_CID_STATELESS_H264_DECODE_PARAMS,
},
{
.cfg.id = V4L2_CID_STATELESS_H264_SPS,
.cfg.ops = &rkvdec_ctrl_ops,
},
{
.cfg.id = V4L2_CID_STATELESS_H264_PPS,
},
{
.cfg.id = V4L2_CID_STATELESS_H264_SCALING_MATRIX,
},
{
.cfg.id = V4L2_CID_STATELESS_H264_DECODE_MODE,
.cfg.min = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,
.cfg.max = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,
.cfg.def = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,
},
{
.cfg.id = V4L2_CID_STATELESS_H264_START_CODE,
.cfg.min = V4L2_STATELESS_H264_START_CODE_ANNEX_B,
.cfg.def = V4L2_STATELESS_H264_START_CODE_ANNEX_B,
.cfg.max = V4L2_STATELESS_H264_START_CODE_ANNEX_B,
},
{
.cfg.id = V4L2_CID_MPEG_VIDEO_H264_PROFILE,
.cfg.min = V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE,
.cfg.max = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
.cfg.menu_skip_mask =
BIT(V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED),
.cfg.def = V4L2_MPEG_VIDEO_H264_PROFILE_MAIN,
},
{
.cfg.id = V4L2_CID_MPEG_VIDEO_H264_LEVEL,
.cfg.min = V4L2_MPEG_VIDEO_H264_LEVEL_1_0,
.cfg.max = V4L2_MPEG_VIDEO_H264_LEVEL_5_1,
},
};
static const struct rkvdec_ctrls rkvdec_h264_ctrls = {
.ctrls = rkvdec_h264_ctrl_descs,
.num_ctrls = ARRAY_SIZE(rkvdec_h264_ctrl_descs),
};
static const u32 rkvdec_h264_vp9_decoded_fmts[] = {
V4L2_PIX_FMT_NV12,
};
static const struct rkvdec_ctrl_desc rkvdec_vp9_ctrl_descs[] = {
{
.cfg.id = V4L2_CID_STATELESS_VP9_FRAME,
},
{
.cfg.id = V4L2_CID_STATELESS_VP9_COMPRESSED_HDR,
},
{
.cfg.id = V4L2_CID_MPEG_VIDEO_VP9_PROFILE,
.cfg.min = V4L2_MPEG_VIDEO_VP9_PROFILE_0,
.cfg.max = V4L2_MPEG_VIDEO_VP9_PROFILE_0,
.cfg.def = V4L2_MPEG_VIDEO_VP9_PROFILE_0,
},
};
static const struct rkvdec_ctrls rkvdec_vp9_ctrls = {
.ctrls = rkvdec_vp9_ctrl_descs,
.num_ctrls = ARRAY_SIZE(rkvdec_vp9_ctrl_descs),
};
static const struct rkvdec_coded_fmt_desc rkvdec_coded_fmts[] = {
{
.fourcc = V4L2_PIX_FMT_H264_SLICE,
.frmsize = {
.min_width = 48,
.max_width = 4096,
.step_width = 16,
.min_height = 48,
.max_height = 2560,
.step_height = 16,
},
.ctrls = &rkvdec_h264_ctrls,
.ops = &rkvdec_h264_fmt_ops,
.num_decoded_fmts = ARRAY_SIZE(rkvdec_h264_vp9_decoded_fmts),
.decoded_fmts = rkvdec_h264_vp9_decoded_fmts,
.subsystem_flags = VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF,
},
{
.fourcc = V4L2_PIX_FMT_VP9_FRAME,
.frmsize = {
.min_width = 64,
.max_width = 4096,
.step_width = 64,
.min_height = 64,
.max_height = 2304,
.step_height = 64,
},
.ctrls = &rkvdec_vp9_ctrls,
.ops = &rkvdec_vp9_fmt_ops,
.num_decoded_fmts = ARRAY_SIZE(rkvdec_h264_vp9_decoded_fmts),
.decoded_fmts = rkvdec_h264_vp9_decoded_fmts,
}
};
static const struct rkvdec_coded_fmt_desc *
rkvdec_find_coded_fmt_desc(u32 fourcc)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++) {
if (rkvdec_coded_fmts[i].fourcc == fourcc)
return &rkvdec_coded_fmts[i];
}
return NULL;
}
static void rkvdec_reset_fmt(struct rkvdec_ctx *ctx, struct v4l2_format *f,
u32 fourcc)
{
memset(f, 0, sizeof(*f));
f->fmt.pix_mp.pixelformat = fourcc;
f->fmt.pix_mp.field = V4L2_FIELD_NONE;
f->fmt.pix_mp.colorspace = V4L2_COLORSPACE_REC709;
f->fmt.pix_mp.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
f->fmt.pix_mp.quantization = V4L2_QUANTIZATION_DEFAULT;
f->fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_DEFAULT;
}
static void rkvdec_reset_coded_fmt(struct rkvdec_ctx *ctx)
{
struct v4l2_format *f = &ctx->coded_fmt;
ctx->coded_fmt_desc = &rkvdec_coded_fmts[0];
rkvdec_reset_fmt(ctx, f, ctx->coded_fmt_desc->fourcc);
f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
f->fmt.pix_mp.width = ctx->coded_fmt_desc->frmsize.min_width;
f->fmt.pix_mp.height = ctx->coded_fmt_desc->frmsize.min_height;
if (ctx->coded_fmt_desc->ops->adjust_fmt)
ctx->coded_fmt_desc->ops->adjust_fmt(ctx, f);
}
static void rkvdec_reset_decoded_fmt(struct rkvdec_ctx *ctx)
{
struct v4l2_format *f = &ctx->decoded_fmt;
rkvdec_reset_fmt(ctx, f, ctx->coded_fmt_desc->decoded_fmts[0]);
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
v4l2_fill_pixfmt_mp(&f->fmt.pix_mp,
ctx->coded_fmt_desc->decoded_fmts[0],
ctx->coded_fmt.fmt.pix_mp.width,
ctx->coded_fmt.fmt.pix_mp.height);
f->fmt.pix_mp.plane_fmt[0].sizeimage += 128 *
DIV_ROUND_UP(f->fmt.pix_mp.width, 16) *
DIV_ROUND_UP(f->fmt.pix_mp.height, 16);
}
static int rkvdec_enum_framesizes(struct file *file, void *priv,
struct v4l2_frmsizeenum *fsize)
{
const struct rkvdec_coded_fmt_desc *fmt;
if (fsize->index != 0)
return -EINVAL;
fmt = rkvdec_find_coded_fmt_desc(fsize->pixel_format);
if (!fmt)
return -EINVAL;
fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
fsize->stepwise = fmt->frmsize;
return 0;
}
static int rkvdec_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct rkvdec_dev *rkvdec = video_drvdata(file);
struct video_device *vdev = video_devdata(file);
strscpy(cap->driver, rkvdec->dev->driver->name,
sizeof(cap->driver));
strscpy(cap->card, vdev->name, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
rkvdec->dev->driver->name);
return 0;
}
static int rkvdec_try_capture_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
const struct rkvdec_coded_fmt_desc *coded_desc;
unsigned int i;
/*
* The codec context should point to a coded format desc, if the format
* on the coded end has not been set yet, it should point to the
* default value.
*/
coded_desc = ctx->coded_fmt_desc;
if (WARN_ON(!coded_desc))
return -EINVAL;
for (i = 0; i < coded_desc->num_decoded_fmts; i++) {
if (coded_desc->decoded_fmts[i] == pix_mp->pixelformat)
break;
}
if (i == coded_desc->num_decoded_fmts)
pix_mp->pixelformat = coded_desc->decoded_fmts[0];
/* Always apply the frmsize constraint of the coded end. */
pix_mp->width = max(pix_mp->width, ctx->coded_fmt.fmt.pix_mp.width);
pix_mp->height = max(pix_mp->height, ctx->coded_fmt.fmt.pix_mp.height);
v4l2_apply_frmsize_constraints(&pix_mp->width,
&pix_mp->height,
&coded_desc->frmsize);
v4l2_fill_pixfmt_mp(pix_mp, pix_mp->pixelformat,
pix_mp->width, pix_mp->height);
pix_mp->plane_fmt[0].sizeimage +=
128 *
DIV_ROUND_UP(pix_mp->width, 16) *
DIV_ROUND_UP(pix_mp->height, 16);
pix_mp->field = V4L2_FIELD_NONE;
return 0;
}
static int rkvdec_try_output_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
const struct rkvdec_coded_fmt_desc *desc;
desc = rkvdec_find_coded_fmt_desc(pix_mp->pixelformat);
if (!desc) {
pix_mp->pixelformat = rkvdec_coded_fmts[0].fourcc;
desc = &rkvdec_coded_fmts[0];
}
v4l2_apply_frmsize_constraints(&pix_mp->width,
&pix_mp->height,
&desc->frmsize);
pix_mp->field = V4L2_FIELD_NONE;
/* All coded formats are considered single planar for now. */
pix_mp->num_planes = 1;
if (desc->ops->adjust_fmt) {
int ret;
ret = desc->ops->adjust_fmt(ctx, f);
if (ret)
return ret;
}
return 0;
}
static int rkvdec_s_capture_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
struct vb2_queue *vq;
int ret;
/* Change not allowed if queue is busy */
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
if (vb2_is_busy(vq))
return -EBUSY;
ret = rkvdec_try_capture_fmt(file, priv, f);
if (ret)
return ret;
ctx->decoded_fmt = *f;
return 0;
}
static int rkvdec_s_output_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
const struct rkvdec_coded_fmt_desc *desc;
struct v4l2_format *cap_fmt;
struct vb2_queue *peer_vq, *vq;
int ret;
/*
* In order to support dynamic resolution change, the decoder admits
* a resolution change, as long as the pixelformat remains. Can't be
* done if streaming.
*/
vq = v4l2_m2m_get_vq(m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
if (vb2_is_streaming(vq) ||
(vb2_is_busy(vq) &&
f->fmt.pix_mp.pixelformat != ctx->coded_fmt.fmt.pix_mp.pixelformat))
return -EBUSY;
/*
* Since format change on the OUTPUT queue will reset the CAPTURE
* queue, we can't allow doing so when the CAPTURE queue has buffers
* allocated.
*/
peer_vq = v4l2_m2m_get_vq(m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
if (vb2_is_busy(peer_vq))
return -EBUSY;
ret = rkvdec_try_output_fmt(file, priv, f);
if (ret)
return ret;
desc = rkvdec_find_coded_fmt_desc(f->fmt.pix_mp.pixelformat);
if (!desc)
return -EINVAL;
ctx->coded_fmt_desc = desc;
ctx->coded_fmt = *f;
/*
* Current decoded format might have become invalid with newly
* selected codec, so reset it to default just to be safe and
* keep internal driver state sane. User is mandated to set
* the decoded format again after we return, so we don't need
* anything smarter.
*
* Note that this will propagates any size changes to the decoded format.
*/
rkvdec_reset_decoded_fmt(ctx);
/* Propagate colorspace information to capture. */
cap_fmt = &ctx->decoded_fmt;
cap_fmt->fmt.pix_mp.colorspace = f->fmt.pix_mp.colorspace;
cap_fmt->fmt.pix_mp.xfer_func = f->fmt.pix_mp.xfer_func;
cap_fmt->fmt.pix_mp.ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
cap_fmt->fmt.pix_mp.quantization = f->fmt.pix_mp.quantization;
/* Enable format specific queue features */
vq->subsystem_flags |= desc->subsystem_flags;
return 0;
}
static int rkvdec_g_output_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
*f = ctx->coded_fmt;
return 0;
}
static int rkvdec_g_capture_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
*f = ctx->decoded_fmt;
return 0;
}
static int rkvdec_enum_output_fmt(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->index >= ARRAY_SIZE(rkvdec_coded_fmts))
return -EINVAL;
f->pixelformat = rkvdec_coded_fmts[f->index].fourcc;
return 0;
}
static int rkvdec_enum_capture_fmt(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
if (WARN_ON(!ctx->coded_fmt_desc))
return -EINVAL;
if (f->index >= ctx->coded_fmt_desc->num_decoded_fmts)
return -EINVAL;
f->pixelformat = ctx->coded_fmt_desc->decoded_fmts[f->index];
return 0;
}
static const struct v4l2_ioctl_ops rkvdec_ioctl_ops = {
.vidioc_querycap = rkvdec_querycap,
.vidioc_enum_framesizes = rkvdec_enum_framesizes,
.vidioc_try_fmt_vid_cap_mplane = rkvdec_try_capture_fmt,
.vidioc_try_fmt_vid_out_mplane = rkvdec_try_output_fmt,
.vidioc_s_fmt_vid_out_mplane = rkvdec_s_output_fmt,
.vidioc_s_fmt_vid_cap_mplane = rkvdec_s_capture_fmt,
.vidioc_g_fmt_vid_out_mplane = rkvdec_g_output_fmt,
.vidioc_g_fmt_vid_cap_mplane = rkvdec_g_capture_fmt,
.vidioc_enum_fmt_vid_out = rkvdec_enum_output_fmt,
.vidioc_enum_fmt_vid_cap = rkvdec_enum_capture_fmt,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
.vidioc_decoder_cmd = v4l2_m2m_ioctl_stateless_decoder_cmd,
.vidioc_try_decoder_cmd = v4l2_m2m_ioctl_stateless_try_decoder_cmd,
};
static int rkvdec_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
unsigned int *num_planes, unsigned int sizes[],
struct device *alloc_devs[])
{
struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq);
struct v4l2_format *f;
unsigned int i;
if (V4L2_TYPE_IS_OUTPUT(vq->type))
f = &ctx->coded_fmt;
else
f = &ctx->decoded_fmt;
if (*num_planes) {
if (*num_planes != f->fmt.pix_mp.num_planes)
return -EINVAL;
for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
if (sizes[i] < f->fmt.pix_mp.plane_fmt[i].sizeimage)
return -EINVAL;
}
} else {
*num_planes = f->fmt.pix_mp.num_planes;
for (i = 0; i < f->fmt.pix_mp.num_planes; i++)
sizes[i] = f->fmt.pix_mp.plane_fmt[i].sizeimage;
}
return 0;
}
static int rkvdec_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_queue *vq = vb->vb2_queue;
struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq);
struct v4l2_format *f;
unsigned int i;
if (V4L2_TYPE_IS_OUTPUT(vq->type))
f = &ctx->coded_fmt;
else
f = &ctx->decoded_fmt;
for (i = 0; i < f->fmt.pix_mp.num_planes; ++i) {
u32 sizeimage = f->fmt.pix_mp.plane_fmt[i].sizeimage;
if (vb2_plane_size(vb, i) < sizeimage)
return -EINVAL;
}
/*
* Buffer's bytesused must be written by driver for CAPTURE buffers.
* (for OUTPUT buffers, if userspace passes 0 bytesused, v4l2-core sets
* it to buffer length).
*/
if (V4L2_TYPE_IS_CAPTURE(vq->type))
vb2_set_plane_payload(vb, 0, f->fmt.pix_mp.plane_fmt[0].sizeimage);
return 0;
}
static void rkvdec_buf_queue(struct vb2_buffer *vb)
{
struct rkvdec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}
static int rkvdec_buf_out_validate(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
vbuf->field = V4L2_FIELD_NONE;
return 0;
}
static void rkvdec_buf_request_complete(struct vb2_buffer *vb)
{
struct rkvdec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->ctrl_hdl);
}
static int rkvdec_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct rkvdec_ctx *ctx = vb2_get_drv_priv(q);
const struct rkvdec_coded_fmt_desc *desc;
int ret;
if (V4L2_TYPE_IS_CAPTURE(q->type))
return 0;
desc = ctx->coded_fmt_desc;
if (WARN_ON(!desc))
return -EINVAL;
if (desc->ops->start) {
ret = desc->ops->start(ctx);
if (ret)
return ret;
}
return 0;
}
static void rkvdec_queue_cleanup(struct vb2_queue *vq, u32 state)
{
struct rkvdec_ctx *ctx = vb2_get_drv_priv(vq);
while (true) {
struct vb2_v4l2_buffer *vbuf;
if (V4L2_TYPE_IS_OUTPUT(vq->type))
vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
else
vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (!vbuf)
break;
v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
&ctx->ctrl_hdl);
v4l2_m2m_buf_done(vbuf, state);
}
}
static void rkvdec_stop_streaming(struct vb2_queue *q)
{
struct rkvdec_ctx *ctx = vb2_get_drv_priv(q);
if (V4L2_TYPE_IS_OUTPUT(q->type)) {
const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
if (WARN_ON(!desc))
return;
if (desc->ops->stop)
desc->ops->stop(ctx);
}
rkvdec_queue_cleanup(q, VB2_BUF_STATE_ERROR);
}
static const struct vb2_ops rkvdec_queue_ops = {
.queue_setup = rkvdec_queue_setup,
.buf_prepare = rkvdec_buf_prepare,
.buf_queue = rkvdec_buf_queue,
.buf_out_validate = rkvdec_buf_out_validate,
.buf_request_complete = rkvdec_buf_request_complete,
.start_streaming = rkvdec_start_streaming,
.stop_streaming = rkvdec_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int rkvdec_request_validate(struct media_request *req)
{
unsigned int count;
count = vb2_request_buffer_cnt(req);
if (!count)
return -ENOENT;
else if (count > 1)
return -EINVAL;
return vb2_request_validate(req);
}
static const struct media_device_ops rkvdec_media_ops = {
.req_validate = rkvdec_request_validate,
.req_queue = v4l2_m2m_request_queue,
};
static void rkvdec_job_finish_no_pm(struct rkvdec_ctx *ctx,
enum vb2_buffer_state result)
{
if (ctx->coded_fmt_desc->ops->done) {
struct vb2_v4l2_buffer *src_buf, *dst_buf;
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
ctx->coded_fmt_desc->ops->done(ctx, src_buf, dst_buf, result);
}
v4l2_m2m_buf_done_and_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx,
result);
}
static void rkvdec_job_finish(struct rkvdec_ctx *ctx,
enum vb2_buffer_state result)
{
struct rkvdec_dev *rkvdec = ctx->dev;
pm_runtime_mark_last_busy(rkvdec->dev);
pm_runtime_put_autosuspend(rkvdec->dev);
rkvdec_job_finish_no_pm(ctx, result);
}
void rkvdec_run_preamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run)
{
struct media_request *src_req;
memset(run, 0, sizeof(*run));
run->bufs.src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
run->bufs.dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
/* Apply request(s) controls if needed. */
src_req = run->bufs.src->vb2_buf.req_obj.req;
if (src_req)
v4l2_ctrl_request_setup(src_req, &ctx->ctrl_hdl);
v4l2_m2m_buf_copy_metadata(run->bufs.src, run->bufs.dst, true);
}
void rkvdec_run_postamble(struct rkvdec_ctx *ctx, struct rkvdec_run *run)
{
struct media_request *src_req = run->bufs.src->vb2_buf.req_obj.req;
if (src_req)
v4l2_ctrl_request_complete(src_req, &ctx->ctrl_hdl);
}
static void rkvdec_device_run(void *priv)
{
struct rkvdec_ctx *ctx = priv;
struct rkvdec_dev *rkvdec = ctx->dev;
const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
int ret;
if (WARN_ON(!desc))
return;
ret = pm_runtime_resume_and_get(rkvdec->dev);
if (ret < 0) {
rkvdec_job_finish_no_pm(ctx, VB2_BUF_STATE_ERROR);
return;
}
ret = desc->ops->run(ctx);
if (ret)
rkvdec_job_finish(ctx, VB2_BUF_STATE_ERROR);
}
static const struct v4l2_m2m_ops rkvdec_m2m_ops = {
.device_run = rkvdec_device_run,
};
static int rkvdec_queue_init(void *priv,
struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct rkvdec_ctx *ctx = priv;
struct rkvdec_dev *rkvdec = ctx->dev;
int ret;
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
src_vq->drv_priv = ctx;
src_vq->ops = &rkvdec_queue_ops;
src_vq->mem_ops = &vb2_dma_contig_memops;
/*
* Driver does mostly sequential access, so sacrifice TLB efficiency
* for faster allocation. Also, no CPU access on the source queue,
* so no kernel mapping needed.
*/
src_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES |
DMA_ATTR_NO_KERNEL_MAPPING;
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->lock = &rkvdec->vdev_lock;
src_vq->dev = rkvdec->v4l2_dev.dev;
src_vq->supports_requests = true;
src_vq->requires_requests = true;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
dst_vq->bidirectional = true;
dst_vq->mem_ops = &vb2_dma_contig_memops;
dst_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES |
DMA_ATTR_NO_KERNEL_MAPPING;
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
dst_vq->drv_priv = ctx;
dst_vq->ops = &rkvdec_queue_ops;
dst_vq->buf_struct_size = sizeof(struct rkvdec_decoded_buffer);
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &rkvdec->vdev_lock;
dst_vq->dev = rkvdec->v4l2_dev.dev;
return vb2_queue_init(dst_vq);
}
static int rkvdec_add_ctrls(struct rkvdec_ctx *ctx,
const struct rkvdec_ctrls *ctrls)
{
unsigned int i;
for (i = 0; i < ctrls->num_ctrls; i++) {
const struct v4l2_ctrl_config *cfg = &ctrls->ctrls[i].cfg;
v4l2_ctrl_new_custom(&ctx->ctrl_hdl, cfg, ctx);
if (ctx->ctrl_hdl.error)
return ctx->ctrl_hdl.error;
}
return 0;
}
static int rkvdec_init_ctrls(struct rkvdec_ctx *ctx)
{
unsigned int i, nctrls = 0;
int ret;
for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++)
nctrls += rkvdec_coded_fmts[i].ctrls->num_ctrls;
v4l2_ctrl_handler_init(&ctx->ctrl_hdl, nctrls);
for (i = 0; i < ARRAY_SIZE(rkvdec_coded_fmts); i++) {
ret = rkvdec_add_ctrls(ctx, rkvdec_coded_fmts[i].ctrls);
if (ret)
goto err_free_handler;
}
ret = v4l2_ctrl_handler_setup(&ctx->ctrl_hdl);
if (ret)
goto err_free_handler;
ctx->fh.ctrl_handler = &ctx->ctrl_hdl;
return 0;
err_free_handler:
v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
return ret;
}
static int rkvdec_open(struct file *filp)
{
struct rkvdec_dev *rkvdec = video_drvdata(filp);
struct rkvdec_ctx *ctx;
int ret;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->dev = rkvdec;
rkvdec_reset_coded_fmt(ctx);
rkvdec_reset_decoded_fmt(ctx);
v4l2_fh_init(&ctx->fh, video_devdata(filp));
ret = rkvdec_init_ctrls(ctx);
if (ret)
goto err_free_ctx;
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(rkvdec->m2m_dev, ctx,
rkvdec_queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
goto err_cleanup_ctrls;
}
filp->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
return 0;
err_cleanup_ctrls:
v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
err_free_ctx:
kfree(ctx);
return ret;
}
static int rkvdec_release(struct file *filp)
{
struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(filp->private_data);
v4l2_fh_del(&ctx->fh);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return 0;
}
static const struct v4l2_file_operations rkvdec_fops = {
.owner = THIS_MODULE,
.open = rkvdec_open,
.release = rkvdec_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static int rkvdec_v4l2_init(struct rkvdec_dev *rkvdec)
{
int ret;
ret = v4l2_device_register(rkvdec->dev, &rkvdec->v4l2_dev);
if (ret) {
dev_err(rkvdec->dev, "Failed to register V4L2 device\n");
return ret;
}
rkvdec->m2m_dev = v4l2_m2m_init(&rkvdec_m2m_ops);
if (IS_ERR(rkvdec->m2m_dev)) {
v4l2_err(&rkvdec->v4l2_dev, "Failed to init mem2mem device\n");
ret = PTR_ERR(rkvdec->m2m_dev);
goto err_unregister_v4l2;
}
rkvdec->mdev.dev = rkvdec->dev;
strscpy(rkvdec->mdev.model, "rkvdec", sizeof(rkvdec->mdev.model));
strscpy(rkvdec->mdev.bus_info, "platform:rkvdec",
sizeof(rkvdec->mdev.bus_info));
media_device_init(&rkvdec->mdev);
rkvdec->mdev.ops = &rkvdec_media_ops;
rkvdec->v4l2_dev.mdev = &rkvdec->mdev;
rkvdec->vdev.lock = &rkvdec->vdev_lock;
rkvdec->vdev.v4l2_dev = &rkvdec->v4l2_dev;
rkvdec->vdev.fops = &rkvdec_fops;
rkvdec->vdev.release = video_device_release_empty;
rkvdec->vdev.vfl_dir = VFL_DIR_M2M;
rkvdec->vdev.device_caps = V4L2_CAP_STREAMING |
V4L2_CAP_VIDEO_M2M_MPLANE;
rkvdec->vdev.ioctl_ops = &rkvdec_ioctl_ops;
video_set_drvdata(&rkvdec->vdev, rkvdec);
strscpy(rkvdec->vdev.name, "rkvdec", sizeof(rkvdec->vdev.name));
ret = video_register_device(&rkvdec->vdev, VFL_TYPE_VIDEO, -1);
if (ret) {
v4l2_err(&rkvdec->v4l2_dev, "Failed to register video device\n");
goto err_cleanup_mc;
}
ret = v4l2_m2m_register_media_controller(rkvdec->m2m_dev, &rkvdec->vdev,
MEDIA_ENT_F_PROC_VIDEO_DECODER);
if (ret) {
v4l2_err(&rkvdec->v4l2_dev,
"Failed to initialize V4L2 M2M media controller\n");
goto err_unregister_vdev;
}
ret = media_device_register(&rkvdec->mdev);
if (ret) {
v4l2_err(&rkvdec->v4l2_dev, "Failed to register media device\n");
goto err_unregister_mc;
}
return 0;
err_unregister_mc:
v4l2_m2m_unregister_media_controller(rkvdec->m2m_dev);
err_unregister_vdev:
video_unregister_device(&rkvdec->vdev);
err_cleanup_mc:
media_device_cleanup(&rkvdec->mdev);
v4l2_m2m_release(rkvdec->m2m_dev);
err_unregister_v4l2:
v4l2_device_unregister(&rkvdec->v4l2_dev);
return ret;
}
static void rkvdec_v4l2_cleanup(struct rkvdec_dev *rkvdec)
{
media_device_unregister(&rkvdec->mdev);
v4l2_m2m_unregister_media_controller(rkvdec->m2m_dev);
video_unregister_device(&rkvdec->vdev);
media_device_cleanup(&rkvdec->mdev);
v4l2_m2m_release(rkvdec->m2m_dev);
v4l2_device_unregister(&rkvdec->v4l2_dev);
}
static irqreturn_t rkvdec_irq_handler(int irq, void *priv)
{
struct rkvdec_dev *rkvdec = priv;
enum vb2_buffer_state state;
u32 status;
status = readl(rkvdec->regs + RKVDEC_REG_INTERRUPT);
state = (status & RKVDEC_RDY_STA) ?
VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
writel(0, rkvdec->regs + RKVDEC_REG_INTERRUPT);
if (cancel_delayed_work(&rkvdec->watchdog_work)) {
struct rkvdec_ctx *ctx;
ctx = v4l2_m2m_get_curr_priv(rkvdec->m2m_dev);
rkvdec_job_finish(ctx, state);
}
return IRQ_HANDLED;
}
static void rkvdec_watchdog_func(struct work_struct *work)
{
struct rkvdec_dev *rkvdec;
struct rkvdec_ctx *ctx;
rkvdec = container_of(to_delayed_work(work), struct rkvdec_dev,
watchdog_work);
ctx = v4l2_m2m_get_curr_priv(rkvdec->m2m_dev);
if (ctx) {
dev_err(rkvdec->dev, "Frame processing timed out!\n");
writel(RKVDEC_IRQ_DIS, rkvdec->regs + RKVDEC_REG_INTERRUPT);
writel(0, rkvdec->regs + RKVDEC_REG_SYSCTRL);
rkvdec_job_finish(ctx, VB2_BUF_STATE_ERROR);
}
}
static const struct of_device_id of_rkvdec_match[] = {
{ .compatible = "rockchip,rk3399-vdec" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_rkvdec_match);
static const char * const rkvdec_clk_names[] = {
"axi", "ahb", "cabac", "core"
};
static int rkvdec_probe(struct platform_device *pdev)
{
struct rkvdec_dev *rkvdec;
unsigned int i;
int ret, irq;
rkvdec = devm_kzalloc(&pdev->dev, sizeof(*rkvdec), GFP_KERNEL);
if (!rkvdec)
return -ENOMEM;
platform_set_drvdata(pdev, rkvdec);
rkvdec->dev = &pdev->dev;
mutex_init(&rkvdec->vdev_lock);
INIT_DELAYED_WORK(&rkvdec->watchdog_work, rkvdec_watchdog_func);
rkvdec->clocks = devm_kcalloc(&pdev->dev, ARRAY_SIZE(rkvdec_clk_names),
sizeof(*rkvdec->clocks), GFP_KERNEL);
if (!rkvdec->clocks)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(rkvdec_clk_names); i++)
rkvdec->clocks[i].id = rkvdec_clk_names[i];
ret = devm_clk_bulk_get(&pdev->dev, ARRAY_SIZE(rkvdec_clk_names),
rkvdec->clocks);
if (ret)
return ret;
rkvdec->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(rkvdec->regs))
return PTR_ERR(rkvdec->regs);
ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pdev->dev, "Could not set DMA coherent mask.\n");
return ret;
}
vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
irq = platform_get_irq(pdev, 0);
if (irq <= 0)
return -ENXIO;
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
rkvdec_irq_handler, IRQF_ONESHOT,
dev_name(&pdev->dev), rkvdec);
if (ret) {
dev_err(&pdev->dev, "Could not request vdec IRQ\n");
return ret;
}
pm_runtime_set_autosuspend_delay(&pdev->dev, 100);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_enable(&pdev->dev);
ret = rkvdec_v4l2_init(rkvdec);
if (ret)
goto err_disable_runtime_pm;
return 0;
err_disable_runtime_pm:
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return ret;
}
static void rkvdec_remove(struct platform_device *pdev)
{
struct rkvdec_dev *rkvdec = platform_get_drvdata(pdev);
cancel_delayed_work_sync(&rkvdec->watchdog_work);
rkvdec_v4l2_cleanup(rkvdec);
pm_runtime_disable(&pdev->dev);
pm_runtime_dont_use_autosuspend(&pdev->dev);
}
#ifdef CONFIG_PM
static int rkvdec_runtime_resume(struct device *dev)
{
struct rkvdec_dev *rkvdec = dev_get_drvdata(dev);
return clk_bulk_prepare_enable(ARRAY_SIZE(rkvdec_clk_names),
rkvdec->clocks);
}
static int rkvdec_runtime_suspend(struct device *dev)
{
struct rkvdec_dev *rkvdec = dev_get_drvdata(dev);
clk_bulk_disable_unprepare(ARRAY_SIZE(rkvdec_clk_names),
rkvdec->clocks);
return 0;
}
#endif
static const struct dev_pm_ops rkvdec_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
SET_RUNTIME_PM_OPS(rkvdec_runtime_suspend, rkvdec_runtime_resume, NULL)
};
static struct platform_driver rkvdec_driver = {
.probe = rkvdec_probe,
.remove_new = rkvdec_remove,
.driver = {
.name = "rkvdec",
.of_match_table = of_rkvdec_match,
.pm = &rkvdec_pm_ops,
},
};
module_platform_driver(rkvdec_driver);
MODULE_AUTHOR("Boris Brezillon <[email protected]>");
MODULE_DESCRIPTION("Rockchip Video Decoder driver");
MODULE_LICENSE("GPL v2");
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