On Wed, 25 Jan 2012, Guennadi Liakhovetski wrote:
> This patch seems incomplete to me? On the one hand you're saying, you only
> work with i.MX27, but you've left
>
> static void mx27_camera_frame_done(struct mx2_camera_dev *pcdev, int state)
> {
> struct videobuf_buffer *vb;
>
> TBH, I don't understand how you've tested this patch: it doesn't compile
> for me for i.MX27. And to use EMMA CONFIG_MACH_MX27 has to be on too,
> right? Confused...
Ok, got it, I missed Sascha's patch, removing legacy i.MX27 DMA support.
Will schedule it for the next window.
Thanks
Guennadi
>
> On Fri, 20 Jan 2012, Javier Martin wrote:
>
> >
> > Signed-off-by: Javier Martin <[email protected]>
> > ---
> > drivers/media/video/mx2_camera.c | 277
> > ++++++++++++++++++--------------------
> > 1 files changed, 128 insertions(+), 149 deletions(-)
> >
> > diff --git a/drivers/media/video/mx2_camera.c
> > b/drivers/media/video/mx2_camera.c
> > index 68038e7..290ac9d 100644
> > --- a/drivers/media/video/mx2_camera.c
> > +++ b/drivers/media/video/mx2_camera.c
>
> [snip]
>
> > @@ -256,13 +257,25 @@ struct mx2_camera_dev {
> > size_t discard_size;
> > struct mx2_fmt_cfg *emma_prp;
> > u32 frame_count;
> > + struct vb2_alloc_ctx *alloc_ctx;
> > +};
> > +
> > +enum mx2_buffer_state {
> > + MX2_STATE_NEEDS_INIT = 0,
> > + MX2_STATE_PREPARED = 1,
> > + MX2_STATE_QUEUED = 2,
> > + MX2_STATE_ACTIVE = 3,
> > + MX2_STATE_DONE = 4,
> > + MX2_STATE_ERROR = 5,
> > + MX2_STATE_IDLE = 6,
>
> Are the numerical values important? If not - please, drop. And actually,
> you don't need most of these states, I wouldn't be surprised, if you
> didn't need them at all. You might want to revise them in a future patch.
>
> [snip]
>
> > @@ -467,59 +479,47 @@ static irqreturn_t mx25_camera_irq(int irq_csi, void
> > *data)
> > /*
> > * Videobuf operations
> > */
> > -static int mx2_videobuf_setup(struct videobuf_queue *vq, unsigned int
> > *count,
> > - unsigned int *size)
> > +static int mx2_videobuf_setup(struct vb2_queue *vq,
> > + const struct v4l2_format *fmt,
> > + unsigned int *count, unsigned int *num_planes,
> > + unsigned int sizes[], void *alloc_ctxs[])
> > {
> > - struct soc_camera_device *icd = vq->priv_data;
> > + struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
> > + struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
> > + struct mx2_camera_dev *pcdev = ici->priv;
> > int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
> > icd->current_fmt->host_fmt);
>
> You choose not to support VIDIOC_CREATE_BUFS? You have to at least return
> an error if fmt != NULL. Or consider supporting it - look at mx3_camera.c
> or sh_mobile_ceu_camera.c (btw, atmel-isi.c has to be fixed with this
> respect too). If you decide to support it, you'll also have to drop
> .buf_prepare() (see, e.g., 07f92448045a23d27dbc3ece3abcb6bafc618d43)
>
> [snip]
>
> > @@ -529,46 +529,34 @@ static int mx2_videobuf_prepare(struct videobuf_queue
> > *vq,
> > * This can be useful if you want to see if we actually fill
> > * the buffer with something
> > */
> > - memset((void *)vb->baddr, 0xaa, vb->bsize);
> > + memset((void *)vb2_plane_vaddr(vb, 0),
> > + 0xaa, vb2_get_plane_payload(vb, 0));
> > #endif
> >
> > - if (buf->code != icd->current_fmt->code ||
> > - vb->width != icd->user_width ||
> > - vb->height != icd->user_height ||
> > - vb->field != field) {
> > + if (buf->code != icd->current_fmt->code) {
> > buf->code = icd->current_fmt->code;
> > - vb->width = icd->user_width;
> > - vb->height = icd->user_height;
> > - vb->field = field;
> > - vb->state = VIDEOBUF_NEEDS_INIT;
> > + buf->state = MX2_STATE_NEEDS_INIT;
>
> This looks broken or most likely redundant to me. The check for a changed
> code was there to reallocate the buffer, doesn't seem to make much sense
> now.
>
> [snip]
>
> > @@ -686,10 +673,10 @@ static void mx2_videobuf_release(struct
> > videobuf_queue *vq,
> > * types.
> > */
> > spin_lock_irqsave(&pcdev->lock, flags);
> > - if (vb->state == VIDEOBUF_QUEUED) {
> > - list_del(&vb->queue);
> > - vb->state = VIDEOBUF_ERROR;
> > - } else if (cpu_is_mx25() && vb->state == VIDEOBUF_ACTIVE) {
> > + if (buf->state == MX2_STATE_QUEUED || buf->state == MX2_STATE_ACTIVE) {
> > + list_del_init(&buf->queue);
> > + buf->state = MX2_STATE_NEEDS_INIT;
> > + } else if (cpu_is_mx25() && buf->state == MX2_STATE_ACTIVE) {
>
> This doesn't look right. You already have " || buf->state ==
> MX2_STATE_ACTIVE" above, so, this latter condition is never entered?
>
> Thanks
> Guennadi
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
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>
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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