On 05/07/2018 11:55 AM, Hans Verkuil wrote:
> On 07/04/18 15:05, Marek Vasut wrote:
>> In case the PRPVF is not connected directly to CSI, the PRPVF subdev
>> driver won't find the CSI subdev and will not configure the CSI input
>> mux. This is not noticable on the IPU1-CSI0 interface with parallel
>> camera, since the mux is set "correctly" by default and the parallel
>> camera will work just fine. This is however noticable on IPU2-CSI1,
>> where the mux is not set to the correct position by default and the
>> pipeline will fail.
>>
>> Add similar code to what is in PRPVF to VDIC driver, so that the VDIC
>> can locate the CSI subdev and configure the mux correctly if the CSI
>> is connected to the VDIC. Make the PRPVF driver configure the CSI mux
>> only in case it's connected directly to CSI and not in case it is
>> connected to VDIC.
>>
>> Signed-off-by: Marek Vasut <ma...@denx.de>
>> Cc: Philipp Zabel <p.za...@pengutronix.de>
>> Cc: Steve Longerbeam <steve_longerb...@mentor.com>
>
> Same here, I cannot merge with out Acks since I don't know the details
> of the imx hardware.
I'm marking this patch as Obsoleted since there has been no activity for a long
time.
Regards,
Hans
>
> Regards,
>
> Hans
>
>> ---
>> drivers/staging/media/imx/imx-ic-prp.c | 6 ++----
>> drivers/staging/media/imx/imx-media-vdic.c | 24 ++++++++++++++++++++++++
>> 2 files changed, 26 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/staging/media/imx/imx-ic-prp.c
>> b/drivers/staging/media/imx/imx-ic-prp.c
>> index 98923fc844ce..84fa66dae21a 100644
>> --- a/drivers/staging/media/imx/imx-ic-prp.c
>> +++ b/drivers/staging/media/imx/imx-ic-prp.c
>> @@ -72,14 +72,12 @@ static inline struct prp_priv *sd_to_priv(struct
>> v4l2_subdev *sd)
>> static int prp_start(struct prp_priv *priv)
>> {
>> struct imx_ic_priv *ic_priv = priv->ic_priv;
>> - bool src_is_vdic;
>>
>> priv->ipu = priv->md->ipu[ic_priv->ipu_id];
>>
>> /* set IC to receive from CSI or VDI depending on source */
>> - src_is_vdic = !!(priv->src_sd->grp_id & IMX_MEDIA_GRP_ID_VDIC);
>> -
>> - ipu_set_ic_src_mux(priv->ipu, priv->csi_id, src_is_vdic);
>> + if (!(priv->src_sd->grp_id & IMX_MEDIA_GRP_ID_VDIC))
>> + ipu_set_ic_src_mux(priv->ipu, priv->csi_id, false);
>>
>> return 0;
>> }
>> diff --git a/drivers/staging/media/imx/imx-media-vdic.c
>> b/drivers/staging/media/imx/imx-media-vdic.c
>> index b538bbebedc5..e660911e7024 100644
>> --- a/drivers/staging/media/imx/imx-media-vdic.c
>> +++ b/drivers/staging/media/imx/imx-media-vdic.c
>> @@ -117,6 +117,9 @@ struct vdic_priv {
>>
>> bool csi_direct; /* using direct CSI->VDIC->IC pipeline */
>>
>> + /* the CSI id at link validate */
>> + int csi_id;
>> +
>> /* motion select control */
>> struct v4l2_ctrl_handler ctrl_hdlr;
>> enum ipu_motion_sel motion;
>> @@ -388,6 +391,9 @@ static int vdic_start(struct vdic_priv *priv)
>> if (ret)
>> return ret;
>>
>> + /* set IC to receive from CSI or VDI depending on source */
>> + ipu_set_ic_src_mux(priv->ipu, priv->csi_id, true);
>> +
>> /*
>> * init the VDIC.
>> *
>> @@ -778,6 +784,7 @@ static int vdic_link_validate(struct v4l2_subdev *sd,
>> struct v4l2_subdev_format *sink_fmt)
>> {
>> struct vdic_priv *priv = v4l2_get_subdevdata(sd);
>> + struct imx_media_subdev *csi;
>> int ret;
>>
>> ret = v4l2_subdev_link_validate_default(sd, link,
>> @@ -785,6 +792,23 @@ static int vdic_link_validate(struct v4l2_subdev *sd,
>> if (ret)
>> return ret;
>>
>> + csi = imx_media_find_upstream_subdev(priv->md, priv->src,
>> + IMX_MEDIA_GRP_ID_CSI);
>> + if (!IS_ERR(csi)) {
>> + switch (csi->sd->grp_id) {
>> + case IMX_MEDIA_GRP_ID_CSI0:
>> + priv->csi_id = 0;
>> + break;
>> + case IMX_MEDIA_GRP_ID_CSI1:
>> + priv->csi_id = 1;
>> + break;
>> + default:
>> + ret = -EINVAL;
>> + }
>> + } else {
>> + priv->csi_id = 0;
>> + }
>> +
>> mutex_lock(&priv->lock);
>>
>> if (priv->csi_direct && priv->motion != HIGH_MOTION) {
>>
>
>
