static int buffer_prepare(struct vb2_buffer *vb)
{
struct vb2_queue *vq = vb->vb2_queue;
struct fimc_ctx *ctx = vq->drv_priv;
struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
int i;
if (!ctx->d_frame.fmt || vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return -EINVAL;
for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
unsigned long size = get_plane_size(&ctx->d_frame, i);
if (vb2_plane_size(vb, i) < size) {
v4l2_err(v4l2_dev, "User buffer too small (%ld < %ld)\n",
vb2_plane_size(vb, i), size);
return -EINVAL;
}
vb2_set_plane_payload(vb, i, size);
}
return 0;
}
static int gsc_capture_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_queue *vq = vb->vb2_queue;
struct gsc_ctx *ctx = vq->drv_priv;
struct gsc_frame *frame = &ctx->d_frame;
int i;
if (frame->fmt == NULL)
return -EINVAL;
for (i = 0; i < frame->fmt->num_planes; i++) {
unsigned long size = frame->payload[i];
if (vb2_plane_size(vb, i) < size) {
v4l2_err(ctx->gsc_dev->cap.vfd,
"User buffer too small (%ld < %ld)\n",
vb2_plane_size(vb, i), size);
return -EINVAL;
}
vb2_set_plane_payload(vb, i, size);
}
return 0;
}
static int
dt3155_buf_prepare(struct vb2_buffer *vb)
{
vb2_set_plane_payload(vb, 0, img_width * img_height);
return 0;
}
int dvb_vb2_fill_buffer(struct dvb_vb2_ctx *ctx,
const unsigned char *src, int len,
enum dmx_buffer_flags *buffer_flags)
{
unsigned long flags = 0;
void *vbuf = NULL;
int todo = len;
unsigned char *psrc = (unsigned char *)src;
int ll = 0;
/*
* normal case: This func is called twice from demux driver
* one with valid src pointer, second time with NULL pointer
*/
if (!src || !len)
return 0;
spin_lock_irqsave(&ctx->slock, flags);
if (buffer_flags && *buffer_flags) {
ctx->flags |= *buffer_flags;
*buffer_flags = 0;
}
while (todo) {
if (!ctx->buf) {
if (list_empty(&ctx->dvb_q)) {
dprintk(3, "[%s] Buffer overflow!!!\n",
ctx->name);
break;
}
ctx->buf = list_entry(ctx->dvb_q.next,
struct dvb_buffer, list);
ctx->remain = vb2_plane_size(&ctx->buf->vb, 0);
ctx->offset = 0;
}
if (!dvb_vb2_is_streaming(ctx)) {
vb2_buffer_done(&ctx->buf->vb, VB2_BUF_STATE_ERROR);
list_del(&ctx->buf->list);
ctx->buf = NULL;
break;
}
/* Fill buffer */
ll = min(todo, ctx->remain);
vbuf = vb2_plane_vaddr(&ctx->buf->vb, 0);
memcpy(vbuf + ctx->offset, psrc, ll);
todo -= ll;
psrc += ll;
ctx->remain -= ll;
ctx->offset += ll;
if (ctx->remain == 0) {
vb2_buffer_done(&ctx->buf->vb, VB2_BUF_STATE_DONE);
list_del(&ctx->buf->list);
ctx->buf = NULL;
}
}
if (ctx->nonblocking && ctx->buf) {
vb2_set_plane_payload(&ctx->buf->vb, 0, ll);
vb2_buffer_done(&ctx->buf->vb, VB2_BUF_STATE_DONE);
list_del(&ctx->buf->list);
ctx->buf = NULL;
}
spin_unlock_irqrestore(&ctx->slock, flags);
if (todo)
dprintk(1, "[%s] %d bytes are dropped.\n", ctx->name, todo);
else
dprintk(3, "[%s]\n", ctx->name);
dprintk(3, "[%s] %d bytes are copied\n", ctx->name, len - todo);
return (len - todo);
}
/* Called for each 256-byte image chunk.
* First word identifies the chunk, followed by 240 words of image
* data and padding. */
static void usbtv_image_chunk(struct usbtv *usbtv, __be32 *chunk)
{
int frame_id, odd, chunk_no;
u32 *frame;
struct usbtv_buf *buf;
unsigned long flags;
/* Ignore corrupted lines. */
if (!USBTV_MAGIC_OK(chunk))
return;
frame_id = USBTV_FRAME_ID(chunk);
odd = USBTV_ODD(chunk);
chunk_no = USBTV_CHUNK_NO(chunk);
if (chunk_no >= usbtv->n_chunks)
return;
/* Beginning of a frame. */
if (chunk_no == 0) {
usbtv->frame_id = frame_id;
usbtv->chunks_done = 0;
}
if (usbtv->frame_id != frame_id)
return;
spin_lock_irqsave(&usbtv->buflock, flags);
if (list_empty(&usbtv->bufs)) {
/* No free buffers. Userspace likely too slow. */
spin_unlock_irqrestore(&usbtv->buflock, flags);
return;
}
/* First available buffer. */
buf = list_first_entry(&usbtv->bufs, struct usbtv_buf, list);
frame = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
/* Copy the chunk data. */
usbtv_chunk_to_vbuf(frame, &chunk[1], chunk_no, odd);
usbtv->chunks_done++;
/* Last chunk in a field */
if (chunk_no == usbtv->n_chunks-1) {
/* Last chunk in a frame, signalling an end */
if (odd && !usbtv->last_odd) {
int size = vb2_plane_size(&buf->vb.vb2_buf, 0);
enum vb2_buffer_state state = usbtv->chunks_done ==
usbtv->n_chunks ?
VB2_BUF_STATE_DONE :
VB2_BUF_STATE_ERROR;
buf->vb.field = V4L2_FIELD_INTERLACED;
buf->vb.sequence = usbtv->sequence++;
buf->vb.vb2_buf.timestamp = ktime_get_ns();
vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
vb2_buffer_done(&buf->vb.vb2_buf, state);
list_del(&buf->list);
}
usbtv->last_odd = odd;
}
spin_unlock_irqrestore(&usbtv->buflock, flags);
}
static void mtk_vdec_worker(struct work_struct *work)
{
struct mtk_vcodec_ctx *ctx = container_of(work, struct mtk_vcodec_ctx,
decode_work);
struct mtk_vcodec_dev *dev = ctx->dev;
struct vb2_buffer *src_buf, *dst_buf;
struct mtk_vcodec_mem buf;
struct vdec_fb *pfb;
bool res_chg = false;
int ret;
struct mtk_video_dec_buf *dst_buf_info, *src_buf_info;
struct vb2_v4l2_buffer *dst_vb2_v4l2, *src_vb2_v4l2;
src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
if (src_buf == NULL) {
v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
mtk_v4l2_debug(1, "[%d] src_buf empty!!", ctx->id);
return;
}
dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
if (dst_buf == NULL) {
v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
mtk_v4l2_debug(1, "[%d] dst_buf empty!!", ctx->id);
return;
}
src_vb2_v4l2 = container_of(src_buf, struct vb2_v4l2_buffer, vb2_buf);
src_buf_info = container_of(src_vb2_v4l2, struct mtk_video_dec_buf, vb);
dst_vb2_v4l2 = container_of(dst_buf, struct vb2_v4l2_buffer, vb2_buf);
dst_buf_info = container_of(dst_vb2_v4l2, struct mtk_video_dec_buf, vb);
pfb = &dst_buf_info->frame_buffer;
pfb->base_y.va = vb2_plane_vaddr(dst_buf, 0);
pfb->base_y.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
pfb->base_y.size = ctx->picinfo.y_bs_sz + ctx->picinfo.y_len_sz;
pfb->base_c.va = vb2_plane_vaddr(dst_buf, 1);
pfb->base_c.dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 1);
pfb->base_c.size = ctx->picinfo.c_bs_sz + ctx->picinfo.c_len_sz;
pfb->status = 0;
mtk_v4l2_debug(3, "===>[%d] vdec_if_decode() ===>", ctx->id);
mtk_v4l2_debug(3,
"id=%d Framebuf pfb=%p VA=%p Y_DMA=%pad C_DMA=%pad Size=%zx",
dst_buf->index, pfb,
pfb->base_y.va, &pfb->base_y.dma_addr,
&pfb->base_c.dma_addr, pfb->base_y.size);
if (src_buf_info->lastframe) {
mtk_v4l2_debug(1, "Got empty flush input buffer.");
src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
/* update dst buf status */
dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
mutex_lock(&ctx->lock);
dst_buf_info->used = false;
mutex_unlock(&ctx->lock);
vdec_if_decode(ctx, NULL, NULL, &res_chg);
clean_display_buffer(ctx);
vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 0, 0);
vb2_set_plane_payload(&dst_buf_info->vb.vb2_buf, 1, 0);
dst_vb2_v4l2->flags |= V4L2_BUF_FLAG_LAST;
v4l2_m2m_buf_done(&dst_buf_info->vb, VB2_BUF_STATE_DONE);
clean_free_buffer(ctx);
v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
return;
}
buf.va = vb2_plane_vaddr(src_buf, 0);
buf.dma_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
buf.size = (size_t)src_buf->planes[0].bytesused;
if (!buf.va) {
v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
mtk_v4l2_err("[%d] id=%d src_addr is NULL!!",
ctx->id, src_buf->index);
return;
}
mtk_v4l2_debug(3, "[%d] Bitstream VA=%p DMA=%pad Size=%zx vb=%p",
ctx->id, buf.va, &buf.dma_addr, buf.size, src_buf);
dst_buf_info->vb.vb2_buf.timestamp
= src_buf_info->vb.vb2_buf.timestamp;
dst_buf_info->vb.timecode
= src_buf_info->vb.timecode;
mutex_lock(&ctx->lock);
dst_buf_info->used = true;
mutex_unlock(&ctx->lock);
src_buf_info->used = true;
ret = vdec_if_decode(ctx, &buf, pfb, &res_chg);
if (ret) {
mtk_v4l2_err(
" <===[%d], src_buf[%d] sz=0x%zx pts=%llu dst_buf[%d] vdec_if_decode() ret=%d res_chg=%d===>",
ctx->id,
src_buf->index,
buf.size,
src_buf_info->vb.vb2_buf.timestamp,
dst_buf->index,
ret, res_chg);
src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
v4l2_m2m_buf_done(&src_buf_info->vb, VB2_BUF_STATE_ERROR);
} else if (res_chg == false) {
/*
* we only return src buffer with VB2_BUF_STATE_DONE
* when decode success without resolution change
*/
src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
v4l2_m2m_buf_done(&src_buf_info->vb, VB2_BUF_STATE_DONE);
}
dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
clean_display_buffer(ctx);
clean_free_buffer(ctx);
if (!ret && res_chg) {
mtk_vdec_pic_info_update(ctx);
/*
* On encountering a resolution change in the stream.
* The driver must first process and decode all
* remaining buffers from before the resolution change
* point, so call flush decode here
*/
mtk_vdec_flush_decoder(ctx);
/*
* After all buffers containing decoded frames from
* before the resolution change point ready to be
* dequeued on the CAPTURE queue, the driver sends a
* V4L2_EVENT_SOURCE_CHANGE event for source change
* type V4L2_EVENT_SRC_CH_RESOLUTION
*/
mtk_vdec_queue_res_chg_event(ctx);
}
v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
}
static irqreturn_t jpeg_hx_irq(int irq, void *priv)
{
unsigned int int_status;
struct vb2_buffer *src_vb, *dst_vb;
struct jpeg_dev *ctrl = priv;
struct jpeg_ctx *ctx;
unsigned long payload_size = 0;
if (ctrl->mode == ENCODING)
ctx = v4l2_m2m_get_curr_priv(ctrl->m2m_dev_enc);
else
ctx = v4l2_m2m_get_curr_priv(ctrl->m2m_dev_dec);
if (ctx == 0) {
printk(KERN_ERR "ctx is null.\n");
jpeg_hx_sw_reset(ctrl->reg_base);
goto ctx_err;
}
spin_lock(&ctx->slock);
int_status = jpeg_hx_int_pending(ctrl);
jpeg_hx_clear_int_status(ctrl->reg_base, int_status);
if (int_status == 8 && ctrl->mode == DECODING) {
jpeg_hx_re_start(ctrl->reg_base);
spin_unlock(&ctx->slock);
return IRQ_HANDLED;
}
src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
if (int_status) {
switch (int_status & 0xfff) {
case 0xe20:
ctrl->irq_ret = OK_ENC_OR_DEC;
break;
default:
ctrl->irq_ret = ERR_UNKNOWN;
break;
}
} else {
ctrl->irq_ret = ERR_UNKNOWN;
}
if (ctrl->irq_ret == OK_ENC_OR_DEC) {
if (ctrl->mode == ENCODING) {
payload_size = jpeg_hx_get_stream_size(ctrl->reg_base);
vb2_set_plane_payload(dst_vb, 0, payload_size);
v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE);
v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE);
} else if (int_status != 8 && ctrl->mode == DECODING) {
v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE);
v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE);
}
} else {
v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_ERROR);
v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_ERROR);
}
if (ctrl->mode == ENCODING)
v4l2_m2m_job_finish(ctrl->m2m_dev_enc, ctx->m2m_ctx);
else
v4l2_m2m_job_finish(ctrl->m2m_dev_dec, ctx->m2m_ctx);
spin_unlock(&ctx->slock);
ctx_err:
return IRQ_HANDLED;
}
int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf)
{
int n, line, col;
void *yuv, *image;
u16 *src;
u16 *dsty, *dstu, *dstv;
image = vb2_plane_vaddr(&fbuf->vb, 0);
yuv = fbuf->data + pdev->frame_header_size; /* Skip header */
/* Raw format; that's easy... */
if (pdev->pixfmt != V4L2_PIX_FMT_YUV420)
{
struct pwc_raw_frame *raw_frame = image;
raw_frame->type = cpu_to_le16(pdev->type);
raw_frame->vbandlength = cpu_to_le16(pdev->vbandlength);
/* cmd_buf is always 4 bytes, but sometimes, only the
* first 3 bytes is filled (Nala case). We can
* determine this using the type of the webcam */
memcpy(raw_frame->cmd, pdev->cmd_buf, 4);
memcpy(raw_frame+1, yuv, pdev->frame_size);
vb2_set_plane_payload(&fbuf->vb, 0,
pdev->frame_size + sizeof(struct pwc_raw_frame));
return 0;
}
vb2_set_plane_payload(&fbuf->vb, 0,
pdev->width * pdev->height * 3 / 2);
if (pdev->vbandlength == 0) {
/* Uncompressed mode.
*
* We do some byte shuffling here to go from the
* native format to YUV420P.
*/
src = (u16 *)yuv;
n = pdev->width * pdev->height;
dsty = (u16 *)(image);
dstu = (u16 *)(image + n);
dstv = (u16 *)(image + n + n / 4);
for (line = 0; line < pdev->height; line++) {
for (col = 0; col < pdev->width; col += 4) {
*dsty++ = *src++;
*dsty++ = *src++;
if (line & 1)
*dstv++ = *src++;
else
*dstu++ = *src++;
}
}
return 0;
}
/*
* Compressed;
* the decompressor routines will write the data in planar format
* immediately.
*/
if (DEVICE_USE_CODEC1(pdev->type)) {
/* TODO & FIXME */
PWC_ERROR("This chipset is not supported for now\n");
return -ENXIO; /* No such device or address: missing decompressor */
} else {
pwc_dec23_decompress(pdev, yuv, image);
}
return 0;
}