Em 03-05-2011 19:51, Andy Walls escreveu:
> Simon Farnsworth <simon.farnswo...@onelan.co.uk> wrote:
>
>> The initial version of this patch (commit
>> d5976931639176bb6777755d96b9f8d959f79e9e) had some issues:
>>
>> * It didn't correctly calculate the size of the YUV buffer for 4:2:2,
>> resulting in capture sometimes being offset by 1/3rd of a picture.
>>
>> * There were a lot of variables duplicating information the driver
>> already knew, which have been removed.
>>
>> * There was an in-kernel format conversion - libv4l can do this one,
>> and is the right place to do format conversions anyway.
>>
>> * Some magic numbers weren't properly explained.
>>
>> Fix all these issues, leaving just the move from videobuf to videobuf2
>> to do.
>>
>> Signed-off-by: Simon Farnsworth <simon.farnswo...@onelan.co.uk>
>> ---
>> drivers/media/video/cx18/Kconfig | 1 -
>> drivers/media/video/cx18/cx18-driver.h | 8 +-
>> drivers/media/video/cx18/cx18-fileops.c | 167
>> +++----------------------------
>> drivers/media/video/cx18/cx18-ioctl.c | 84 +++++++++------
>> drivers/media/video/cx18/cx18-mailbox.c | 17 +---
>> drivers/media/video/cx18/cx18-streams.c | 160
>> ++++++++++++++++++++++++++++-
>> 6 files changed, 225 insertions(+), 212 deletions(-)
>>
>> diff --git a/drivers/media/video/cx18/Kconfig
>> b/drivers/media/video/cx18/Kconfig
>> index 9c23202..53b3c77 100644
>> --- a/drivers/media/video/cx18/Kconfig
>> +++ b/drivers/media/video/cx18/Kconfig
>> @@ -2,7 +2,6 @@ config VIDEO_CX18
>> tristate "Conexant cx23418 MPEG encoder support"
>> depends on VIDEO_V4L2 && DVB_CORE && PCI && I2C && EXPERIMENTAL
>> select I2C_ALGOBIT
>> - select VIDEOBUF_DVB
>> select VIDEOBUF_VMALLOC
>> depends on RC_CORE
>> select VIDEO_TUNER
>> diff --git a/drivers/media/video/cx18/cx18-driver.h
>> b/drivers/media/video/cx18/cx18-driver.h
>> index 70e1e04..0864272 100644
>> --- a/drivers/media/video/cx18/cx18-driver.h
>> +++ b/drivers/media/video/cx18/cx18-driver.h
>> @@ -412,11 +412,11 @@ struct cx18_stream {
>> u32 pixelformat;
>> struct list_head vb_capture; /* video capture queue */
>> spinlock_t vb_lock;
>> - struct v4l2_framebuffer fbuf;
>> - v4l2_std_id tvnorm; /* selected tv norm */
>> struct timer_list vb_timeout;
>> - int vbwidth;
>> - int vbheight;
>> +
>> + struct videobuf_queue vbuf_q;
>> + spinlock_t vbuf_q_lock; /* Protect vbuf_q */
>> + enum v4l2_buf_type vb_type;
>> };
>>
>> struct cx18_videobuf_buffer {
>> diff --git a/drivers/media/video/cx18/cx18-fileops.c
>> b/drivers/media/video/cx18/cx18-fileops.c
>> index c74eafd..6609222 100644
>> --- a/drivers/media/video/cx18/cx18-fileops.c
>> +++ b/drivers/media/video/cx18/cx18-fileops.c
>> @@ -598,9 +598,9 @@ ssize_t cx18_v4l2_read(struct file *filp, char
>> __user *buf, size_t count,
>> if (rc)
>> return rc;
>>
>> - if ((id->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
>> - return videobuf_read_stream(&id->vbuf_q, buf, count, pos, 0,
>> + return videobuf_read_stream(&s->vbuf_q, buf, count, pos, 0,
>> filp->f_flags & O_NONBLOCK);
>> }
>>
>> @@ -629,9 +629,13 @@ unsigned int cx18_v4l2_enc_poll(struct file *filp,
>> poll_table *wait)
>> CX18_DEBUG_FILE("Encoder poll started capture\n");
>> }
>>
>> - if ((id->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
>> - return videobuf_poll_stream(filp, &id->vbuf_q, wait);
>> + int videobuf_poll = videobuf_poll_stream(filp, &s->vbuf_q,
>> wait);
>> + if (eof && videobuf_poll == POLLERR)
>> + return POLLHUP;
>> + else
>> + return videobuf_poll;
>> }
>>
>> /* add stream's waitq to the poll list */
>> @@ -652,7 +656,7 @@ int cx18_v4l2_mmap(struct file *file, struct
>> vm_area_struct *vma)
>> struct cx18_stream *s = &cx->streams[id->type];
>> int eof = test_bit(CX18_F_S_STREAMOFF, &s->s_flags);
>>
>> - if ((id->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
>>
>> /* Start a capture if there is none */
>> @@ -668,10 +672,10 @@ int cx18_v4l2_mmap(struct file *file, struct
>> vm_area_struct *vma)
>> s->name, rc);
>> return -EINVAL;
>> }
>> - CX18_DEBUG_FILE("Encoder poll started capture\n");
>> + CX18_DEBUG_FILE("Encoder mmap started capture\n");
>> }
>>
>> - return videobuf_mmap_mapper(&id->vbuf_q, vma);
>> + return videobuf_mmap_mapper(&s->vbuf_q, vma);
>> }
>>
>> return -EINVAL;
>> @@ -788,142 +792,6 @@ int cx18_v4l2_close(struct file *filp)
>> return 0;
>> }
>>
>> -void cx18_dma_free(struct videobuf_queue *q,
>> - struct cx18_stream *s, struct cx18_videobuf_buffer *buf)
>> -{
>> - videobuf_waiton(q, &buf->vb, 0, 0);
>> - videobuf_vmalloc_free(&buf->vb);
>> - buf->vb.state = VIDEOBUF_NEEDS_INIT;
>> -}
>> -
>> -static int cx18_prepare_buffer(struct videobuf_queue *q,
>> - struct cx18_stream *s,
>> - struct cx18_videobuf_buffer *buf,
>> - u32 pixelformat,
>> - unsigned int width, unsigned int height,
>> - enum v4l2_field field)
>> -{
>> - int rc = 0;
>> -
>> - /* check settings */
>> - buf->bytes_used = 0;
>> -
>> - if ((width < 48) || (height < 32))
>> - return -EINVAL;
>> -
>> - buf->vb.size = (width * height * 16 /*fmt->depth*/) >> 3;
>> - if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
>> - return -EINVAL;
>> -
>> - /* alloc + fill struct (if changed) */
>> - if (buf->vb.width != width || buf->vb.height != height ||
>> - buf->vb.field != field || s->pixelformat != pixelformat ||
>> - buf->tvnorm != s->tvnorm) {
>> -
>> - buf->vb.width = width;
>> - buf->vb.height = height;
>> - buf->vb.field = field;
>> - buf->tvnorm = s->tvnorm;
>> - s->pixelformat = pixelformat;
>> -
>> - cx18_dma_free(q, s, buf);
>> - }
>> -
>> - if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
>> - return -EINVAL;
>> -
>> - if (buf->vb.field == 0)
>> - buf->vb.field = V4L2_FIELD_INTERLACED;
>> -
>> - if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
>> - buf->vb.width = width;
>> - buf->vb.height = height;
>> - buf->vb.field = field;
>> - buf->tvnorm = s->tvnorm;
>> - s->pixelformat = pixelformat;
>> -
>> - rc = videobuf_iolock(q, &buf->vb, &s->fbuf);
>> - if (rc != 0)
>> - goto fail;
>> - }
>> - buf->vb.state = VIDEOBUF_PREPARED;
>> - return 0;
>> -
>> -fail:
>> - cx18_dma_free(q, s, buf);
>> - return rc;
>> -
>> -}
>> -
>> -#define VB_MIN_BUFFERS 32
>> -#define VB_MIN_BUFSIZE 0x208000
>> -
>> -static int buffer_setup(struct videobuf_queue *q,
>> - unsigned int *count, unsigned int *size)
>> -{
>> - struct cx18_open_id *id = q->priv_data;
>> - struct cx18 *cx = id->cx;
>> - struct cx18_stream *s = &cx->streams[id->type];
>> -
>> - *size = 2 * s->vbwidth * s->vbheight;
>> - if (*count == 0)
>> - *count = VB_MIN_BUFFERS;
>> -
>> - while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE)
>> - (*count)--;
>> -
>> - q->field = V4L2_FIELD_INTERLACED;
>> - q->last = V4L2_FIELD_INTERLACED;
>> -
>> - return 0;
>> -}
>> -
>> -static int buffer_prepare(struct videobuf_queue *q,
>> - struct videobuf_buffer *vb,
>> - enum v4l2_field field)
>> -{
>> - struct cx18_videobuf_buffer *buf =
>> - container_of(vb, struct cx18_videobuf_buffer, vb);
>> - struct cx18_open_id *id = q->priv_data;
>> - struct cx18 *cx = id->cx;
>> - struct cx18_stream *s = &cx->streams[id->type];
>> -
>> - return cx18_prepare_buffer(q, s, buf, s->pixelformat,
>> - s->vbwidth, s->vbheight, field);
>> -}
>> -
>> -static void buffer_release(struct videobuf_queue *q,
>> - struct videobuf_buffer *vb)
>> -{
>> - struct cx18_videobuf_buffer *buf =
>> - container_of(vb, struct cx18_videobuf_buffer, vb);
>> - struct cx18_open_id *id = q->priv_data;
>> - struct cx18 *cx = id->cx;
>> - struct cx18_stream *s = &cx->streams[id->type];
>> -
>> - cx18_dma_free(q, s, buf);
>> -}
>> -
>> -static void buffer_queue(struct videobuf_queue *q, struct
>> videobuf_buffer *vb)
>> -{
>> - struct cx18_videobuf_buffer *buf =
>> - container_of(vb, struct cx18_videobuf_buffer, vb);
>> - struct cx18_open_id *id = q->priv_data;
>> - struct cx18 *cx = id->cx;
>> - struct cx18_stream *s = &cx->streams[id->type];
>> -
>> - buf->vb.state = VIDEOBUF_QUEUED;
>> -
>> - list_add_tail(&buf->vb.queue, &s->vb_capture);
>> -}
>> -
>> -static struct videobuf_queue_ops cx18_videobuf_qops = {
>> - .buf_setup = buffer_setup,
>> - .buf_prepare = buffer_prepare,
>> - .buf_queue = buffer_queue,
>> - .buf_release = buffer_release,
>> -};
>> -
>> static int cx18_serialized_open(struct cx18_stream *s, struct file
>> *filp)
>> {
>> struct cx18 *cx = s->cx;
>> @@ -942,8 +810,8 @@ static int cx18_serialized_open(struct cx18_stream
>> *s, struct file *filp)
>> item->cx = cx;
>> item->type = s->type;
>>
>> - spin_lock_init(&item->s_lock);
>> - item->vb_type = 0;
>> + spin_lock_init(&s->vbuf_q_lock);
>> + s->vb_type = 0;
>>
>> item->open_id = cx->open_id++;
>> filp->private_data = &item->fh;
>> @@ -979,15 +847,6 @@ static int cx18_serialized_open(struct cx18_stream
>> *s, struct file *filp)
>> /* Done! Unmute and continue. */
>> cx18_unmute(cx);
>> }
>> - if (item->type == CX18_ENC_STREAM_TYPE_YUV) {
>> - item->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
>> - videobuf_queue_vmalloc_init(&item->vbuf_q, &cx18_videobuf_qops,
>> - &cx->pci_dev->dev, &item->s_lock,
>> - V4L2_BUF_TYPE_VIDEO_CAPTURE,
>> - V4L2_FIELD_INTERLACED,
>> - sizeof(struct cx18_videobuf_buffer),
>> - item, &cx->serialize_lock);
>> - }
>> v4l2_fh_add(&item->fh);
>> return 0;
>> }
>> diff --git a/drivers/media/video/cx18/cx18-ioctl.c
>> b/drivers/media/video/cx18/cx18-ioctl.c
>> index 777d726..1933d4d 100644
>> --- a/drivers/media/video/cx18/cx18-ioctl.c
>> +++ b/drivers/media/video/cx18/cx18-ioctl.c
>> @@ -41,18 +41,6 @@
>> #include <media/tveeprom.h>
>> #include <media/v4l2-chip-ident.h>
>>
>> -static struct v4l2_fmtdesc formats[] = {
>> - { 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
>> - "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
>> - },
>> - { 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
>> - "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
>> - },
>> - { 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
>> - "YUYV 4:2:2", V4L2_PIX_FMT_YUYV, { 0, 0, 0, 0 }
>> - },
>> -};
>> -
>> u16 cx18_service2vbi(int type)
>> {
>> switch (type) {
>> @@ -172,8 +160,12 @@ static int cx18_g_fmt_vid_cap(struct file *file,
>> void *fh,
>> pixfmt->priv = 0;
>> if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
>> pixfmt->pixelformat = s->pixelformat;
>> - /* YUV size is (Y=(h*720) + UV=(h*(720/2))) */
>> - pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
>> + /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
>> + UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
>> + if (s->pixelformat == V4L2_PIX_FMT_HM12)
>> + pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
>> + else
>> + pixfmt->sizeimage = pixfmt->height * 720 * 2;
>> pixfmt->bytesperline = 720;
>> } else {
>> pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
>> @@ -296,16 +288,15 @@ static int cx18_s_fmt_vid_cap(struct file *file,
>> void *fh,
>> w = fmt->fmt.pix.width;
>> h = fmt->fmt.pix.height;
>>
>> - s->pixelformat = fmt->fmt.pix.pixelformat;
>> - s->vbheight = h;
>> - s->vbwidth = w;
>> -
>> - if (cx->cxhdl.width == w && cx->cxhdl.height == h)
>> + if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
>> + s->pixelformat == fmt->fmt.pix.pixelformat)
>> return 0;
>>
>> if (atomic_read(&cx->ana_capturing) > 0)
>> return -EBUSY;
>>
>> + s->pixelformat = fmt->fmt.pix.pixelformat;
>> +
>> mbus_fmt.width = cx->cxhdl.width = w;
>> mbus_fmt.height = cx->cxhdl.height = h;
>> mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
>> @@ -557,6 +548,18 @@ static int cx18_g_crop(struct file *file, void
>> *fh, struct v4l2_crop *crop)
>> static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
>> struct v4l2_fmtdesc *fmt)
>> {
>> + static const struct v4l2_fmtdesc formats[] = {
>> + { 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
>> + "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
>> + },
>> + { 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
>> + "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
>> + },
>> + { 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
>> + "UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
>> + },
>> + };
>> +
>> if (fmt->index > ARRAY_SIZE(formats) - 1)
>> return -EINVAL;
>> *fmt = formats[fmt->index];
>> @@ -874,10 +877,12 @@ static int cx18_g_enc_index(struct file *file,
>> void *fh,
>> static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
>> {
>> struct videobuf_queue *q = NULL;
>> + struct cx18 *cx = id->cx;
>> + struct cx18_stream *s = &cx->streams[id->type];
>>
>> - switch (id->vb_type) {
>> + switch (s->vb_type) {
>> case V4L2_BUF_TYPE_VIDEO_CAPTURE:
>> - q = &id->vbuf_q;
>> + q = &s->vbuf_q;
>> break;
>> case V4L2_BUF_TYPE_VBI_CAPTURE:
>> break;
>> @@ -895,15 +900,15 @@ static int cx18_streamon(struct file *file, void
>> *priv,
>> struct cx18_stream *s = &cx->streams[id->type];
>>
>> /* Start the hardware only if we're the video device */
>> - if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> - (id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> + if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> return -EINVAL;
>>
>> if (id->type != CX18_ENC_STREAM_TYPE_YUV)
>> return -EINVAL;
>>
>> /* Establish a buffer timeout */
>> - mod_timer(&s->vb_timeout, jiffies + (HZ * 2));
>> + mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
>>
>> return videobuf_streamon(cx18_vb_queue(id));
>> }
>> @@ -912,10 +917,12 @@ static int cx18_streamoff(struct file *file, void
>> *priv,
>> enum v4l2_buf_type type)
>> {
>> struct cx18_open_id *id = file->private_data;
>> + struct cx18 *cx = id->cx;
>> + struct cx18_stream *s = &cx->streams[id->type];
>>
>> /* Start the hardware only if we're the video device */
>> - if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> - (id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> + if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> return -EINVAL;
>>
>> if (id->type != CX18_ENC_STREAM_TYPE_YUV)
>> @@ -928,9 +935,11 @@ static int cx18_reqbufs(struct file *file, void
>> *priv,
>> struct v4l2_requestbuffers *rb)
>> {
>> struct cx18_open_id *id = file->private_data;
>> + struct cx18 *cx = id->cx;
>> + struct cx18_stream *s = &cx->streams[id->type];
>>
>> - if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> - (id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> + if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> return -EINVAL;
>>
>> return videobuf_reqbufs(cx18_vb_queue(id), rb);
>> @@ -940,9 +949,11 @@ static int cx18_querybuf(struct file *file, void
>> *priv,
>> struct v4l2_buffer *b)
>> {
>> struct cx18_open_id *id = file->private_data;
>> + struct cx18 *cx = id->cx;
>> + struct cx18_stream *s = &cx->streams[id->type];
>>
>> - if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> - (id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> + if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> return -EINVAL;
>>
>> return videobuf_querybuf(cx18_vb_queue(id), b);
>> @@ -951,9 +962,11 @@ static int cx18_querybuf(struct file *file, void
>> *priv,
>> static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer
>> *b)
>> {
>> struct cx18_open_id *id = file->private_data;
>> + struct cx18 *cx = id->cx;
>> + struct cx18_stream *s = &cx->streams[id->type];
>>
>> - if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> - (id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> + if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> return -EINVAL;
>>
>> return videobuf_qbuf(cx18_vb_queue(id), b);
>> @@ -962,8 +975,11 @@ static int cx18_qbuf(struct file *file, void
>> *priv, struct v4l2_buffer *b)
>> static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer
>> *b)
>> {
>> struct cx18_open_id *id = file->private_data;
>> - if ((id->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> - (id->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> + struct cx18 *cx = id->cx;
>> + struct cx18_stream *s = &cx->streams[id->type];
>> +
>> + if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
>> + (s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
>> return -EINVAL;
>>
>> return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags &
>> O_NONBLOCK);
>> diff --git a/drivers/media/video/cx18/cx18-mailbox.c
>> b/drivers/media/video/cx18/cx18-mailbox.c
>> index d4d8873..5ecae93 100644
>> --- a/drivers/media/video/cx18/cx18-mailbox.c
>> +++ b/drivers/media/video/cx18/cx18-mailbox.c
>> @@ -177,7 +177,7 @@ static void cx18_mdl_send_to_videobuf(struct
>> cx18_stream *s,
>> if (list_empty(&s->vb_capture))
>> goto out;
>>
>> - vb_buf = list_entry(s->vb_capture.next, struct cx18_videobuf_buffer,
>> + vb_buf = list_first_entry(&s->vb_capture, struct
>> cx18_videobuf_buffer,
>> vb.queue);
>>
>> p = videobuf_to_vmalloc(&vb_buf->vb);
>> @@ -202,25 +202,14 @@ static void cx18_mdl_send_to_videobuf(struct
>> cx18_stream *s,
>> vb_buf->bytes_used = 0;
>> }
>>
>> - /* */
>> if (dispatch) {
>> -
>> - if (s->pixelformat == V4L2_PIX_FMT_YUYV) {
>> - /* UYVY to YUYV */
>> - for (i = 0; i < (720 * 480 * 2); i += 2) {
>> - u = *(p + i);
>> - *(p + i) = *(p + i + 1);
>> - *(p + i + 1) = u;
>> - }
>> - }
>> -
>> - do_gettimeofday(&vb_buf->vb.ts);
>> + ktime_get_ts(&vb_buf->vb.ts);
>> list_del(&vb_buf->vb.queue);
>> vb_buf->vb.state = VIDEOBUF_DONE;
>> wake_up(&vb_buf->vb.done);
>> }
>>
>> - mod_timer(&s->vb_timeout, jiffies + (HZ / 10));
>> + mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
>>
>> out:
>> spin_unlock(&s->vb_lock);
>> diff --git a/drivers/media/video/cx18/cx18-streams.c
>> b/drivers/media/video/cx18/cx18-streams.c
>> index 53f5e4f..24c9688 100644
>> --- a/drivers/media/video/cx18/cx18-streams.c
>> +++ b/drivers/media/video/cx18/cx18-streams.c
>> @@ -98,6 +98,141 @@ static struct {
>> },
>> };
>>
>> +
>> +void cx18_dma_free(struct videobuf_queue *q,
>> + struct cx18_stream *s, struct cx18_videobuf_buffer *buf)
>> +{
>> + videobuf_waiton(q, &buf->vb, 0, 0);
>> + videobuf_vmalloc_free(&buf->vb);
>> + buf->vb.state = VIDEOBUF_NEEDS_INIT;
>> +}
>> +
>> +static int cx18_prepare_buffer(struct videobuf_queue *q,
>> + struct cx18_stream *s,
>> + struct cx18_videobuf_buffer *buf,
>> + u32 pixelformat,
>> + unsigned int width, unsigned int height,
>> + enum v4l2_field field)
>> +{
>> + struct cx18 *cx = s->cx;
>> + int rc = 0;
>> +
>> + /* check settings */
>> + buf->bytes_used = 0;
>> +
>> + if ((width < 48) || (height < 32))
>> + return -EINVAL;
>> +
>> + buf->vb.size = (width * height * 2);
>> + if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
>> + return -EINVAL;
>> +
>> + /* alloc + fill struct (if changed) */
>> + if (buf->vb.width != width || buf->vb.height != height ||
>> + buf->vb.field != field || s->pixelformat != pixelformat ||
>> + buf->tvnorm != cx->std) {
>> +
>> + buf->vb.width = width;
>> + buf->vb.height = height;
>> + buf->vb.field = field;
>> + buf->tvnorm = cx->std;
>> + s->pixelformat = pixelformat;
>> +
>> + cx18_dma_free(q, s, buf);
>> + }
>> +
>> + if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size))
>> + return -EINVAL;
>> +
>> + if (buf->vb.field == 0)
>> + buf->vb.field = V4L2_FIELD_INTERLACED;
>> +
>> + if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
>> + buf->vb.width = width;
>> + buf->vb.height = height;
>> + buf->vb.field = field;
>> + buf->tvnorm = cx->std;
>> + s->pixelformat = pixelformat;
>> +
>> + rc = videobuf_iolock(q, &buf->vb, NULL);
>> + if (rc != 0)
>> + goto fail;
>> + }
>> + buf->vb.state = VIDEOBUF_PREPARED;
>> + return 0;
>> +
>> +fail:
>> + cx18_dma_free(q, s, buf);
>> + return rc;
>> +
>> +}
>> +
>> +/* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576)
>> + 1440 is a single line of 4:2:2 YUV at 720 luma samples wide
>> +*/
>> +#define VB_MIN_BUFFERS 32
>> +#define VB_MIN_BUFSIZE 4147200
>> +
>> +static int buffer_setup(struct videobuf_queue *q,
>> + unsigned int *count, unsigned int *size)
>> +{
>> + struct cx18_stream *s = q->priv_data;
>> + struct cx18 *cx = s->cx;
>> +
>> + *size = 2 * cx->cxhdl.width * cx->cxhdl.height;
>> + if (*count == 0)
>> + *count = VB_MIN_BUFFERS;
>> +
>> + while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE)
>> + (*count)--;
>> +
>> + q->field = V4L2_FIELD_INTERLACED;
>> + q->last = V4L2_FIELD_INTERLACED;
>> +
>> + return 0;
>> +}
>> +
>> +static int buffer_prepare(struct videobuf_queue *q,
>> + struct videobuf_buffer *vb,
>> + enum v4l2_field field)
>> +{
>> + struct cx18_videobuf_buffer *buf =
>> + container_of(vb, struct cx18_videobuf_buffer, vb);
>> + struct cx18_stream *s = q->priv_data;
>> + struct cx18 *cx = s->cx;
>> +
>> + return cx18_prepare_buffer(q, s, buf, s->pixelformat,
>> + cx->cxhdl.width, cx->cxhdl.height, field);
>> +}
>> +
>> +static void buffer_release(struct videobuf_queue *q,
>> + struct videobuf_buffer *vb)
>> +{
>> + struct cx18_videobuf_buffer *buf =
>> + container_of(vb, struct cx18_videobuf_buffer, vb);
>> + struct cx18_stream *s = q->priv_data;
>> +
>> + cx18_dma_free(q, s, buf);
>> +}
>> +
>> +static void buffer_queue(struct videobuf_queue *q, struct
>> videobuf_buffer *vb)
>> +{
>> + struct cx18_videobuf_buffer *buf =
>> + container_of(vb, struct cx18_videobuf_buffer, vb);
>> + struct cx18_stream *s = q->priv_data;
>> +
>> + buf->vb.state = VIDEOBUF_QUEUED;
>> +
>> + list_add_tail(&buf->vb.queue, &s->vb_capture);
>> +}
>> +
>> +static struct videobuf_queue_ops cx18_videobuf_qops = {
>> + .buf_setup = buffer_setup,
>> + .buf_prepare = buffer_prepare,
>> + .buf_queue = buffer_queue,
>> + .buf_release = buffer_release,
>> +};
>> +
>> static void cx18_stream_init(struct cx18 *cx, int type)
>> {
>> struct cx18_stream *s = &cx->streams[type];
>> @@ -139,9 +274,18 @@ static void cx18_stream_init(struct cx18 *cx, int
>> type)
>> s->vb_timeout.data = (unsigned long)s;
>> init_timer(&s->vb_timeout);
>> spin_lock_init(&s->vb_lock);
>> -
>> - /* Assume the previous pixel default */
>> - s->pixelformat = V4L2_PIX_FMT_HM12;
>> + if (type == CX18_ENC_STREAM_TYPE_YUV) {
>> + s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
>> + videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops,
>> + &cx->pci_dev->dev, &s->vbuf_q_lock,
>> + V4L2_BUF_TYPE_VIDEO_CAPTURE,
>> + V4L2_FIELD_INTERLACED,
>> + sizeof(struct cx18_videobuf_buffer),
>> + s, &cx->serialize_lock);
>> +
>> + /* Assume the previous pixel default */
>> + s->pixelformat = V4L2_PIX_FMT_HM12;
>> + }
>> }
>>
>> static int cx18_prep_dev(struct cx18 *cx, int type)
>> @@ -374,6 +518,9 @@ void cx18_streams_cleanup(struct cx18 *cx, int
>> unregister)
>> if (vdev == NULL)
>> continue;
>>
>> + if (type == CX18_ENC_STREAM_TYPE_YUV)
>> + videobuf_mmap_free(&cx->streams[type].vbuf_q);
>> +
>> cx18_stream_free(&cx->streams[type]);
>>
>> /* Unregister or release device */
>> @@ -583,7 +730,10 @@ static void cx18_stream_configure_mdls(struct
>> cx18_stream *s)
>> * Set the MDL size to the exact size needed for one frame.
>> * Use enough buffers per MDL to cover the MDL size
>> */
>> - s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
>> + if (s->pixelformat == V4L2_PIX_FMT_HM12)
>> + s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
>> + else
>> + s->mdl_size = 720 * s->cx->cxhdl.height * 2;
>> s->bufs_per_mdl = s->mdl_size / s->buf_size;
>> if (s->mdl_size % s->buf_size)
>> s->bufs_per_mdl++;
>> @@ -736,7 +886,7 @@ int cx18_start_v4l2_encode_stream(struct
>> cx18_stream *s)
>> * rather than the default HM12 Macroblovk 4:2:0 support.
>> */
>> if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
>> - if (s->pixelformat == V4L2_PIX_FMT_YUYV)
>> + if (s->pixelformat == V4L2_PIX_FMT_UYVY)
>> cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
>> s->handle, 1);
>> else
>> --
>> 1.7.4
>
> Simon,
>
> If these two changes are going in, please also bump the driver version to
> 1.5.0 in cx18-version.c. These changes are significant enough perturbation.
>
> End users are going to look to driver version 1.4.1 as the first version for
> proper analog tuner support of the HVR1600 model 74351.
>
> Mauro,
>
> Is cx18 v1.4.1 with HVR1600 model 74351 analog tuner support, without these
> mmap() changes going to be visible in kernel version .39 ?
Hmm... This is what I have at my for_upstream tree:
$ git grep -i 74351 drivers/media/video/cx18/
drivers/media/video/cx18/cx18-driver.c: case 74351: /* OEM models */
drivers/media/video/cx18/cx18-version.h:#define CX18_DRIVER_VERSION_MAJOR 1
drivers/media/video/cx18/cx18-version.h:#define CX18_DRIVER_VERSION_MINOR 4
drivers/media/video/cx18/cx18-version.h:#define CX18_DRIVER_VERSION_PATCHLEVEL 0
>
> Regards,
> Andy
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