On 07/03/18 23:04, Niklas Söderlund wrote:
> At stream on time the driver should not query the subdevice for which
> standard are used. Instead it should be cached when userspace sets the
> standard and used at stream on time.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Reviewed-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Regards,
Hans
> ---
> drivers/media/platform/rcar-vin/rcar-core.c | 6 ++++++
> drivers/media/platform/rcar-vin/rcar-dma.c | 7 ++-----
> drivers/media/platform/rcar-vin/rcar-v4l2.c | 10 ++++++++--
> drivers/media/platform/rcar-vin/rcar-vin.h | 2 ++
> 4 files changed, 18 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
> index cc863e4ec9a4d4b3..ae0339d4ec104e8c 100644
> --- a/drivers/media/platform/rcar-vin/rcar-core.c
> +++ b/drivers/media/platform/rcar-vin/rcar-core.c
> @@ -96,6 +96,12 @@ static int rvin_digital_subdevice_attach(struct rvin_dev *vin,
> if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
> return ret;
>
> + /* Read standard */
> + vin->std = V4L2_STD_UNKNOWN;
> + ret = v4l2_subdev_call(subdev, video, g_std, &vin->std);
> + if (ret < 0 && ret != -ENOIOCTLCMD)
> + return ret;
> +
> /* Add the controls */
> ret = v4l2_ctrl_handler_init(&vin->ctrl_handler, 16);
> if (ret < 0)
> diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
> index c8831e189d362c8b..7c64f1f8ec63bcf4 100644
> --- a/drivers/media/platform/rcar-vin/rcar-dma.c
> +++ b/drivers/media/platform/rcar-vin/rcar-dma.c
> @@ -592,7 +592,6 @@ void rvin_crop_scale_comp(struct rvin_dev *vin)
> static int rvin_setup(struct rvin_dev *vin)
> {
> u32 vnmc, dmr, dmr2, interrupts;
> - v4l2_std_id std;
> bool progressive = false, output_is_yuv = false, input_is_yuv = false;
>
> switch (vin->format.field) {
> @@ -606,10 +605,8 @@ static int rvin_setup(struct rvin_dev *vin)
> /* Default to TB */
> vnmc = VNMC_IM_FULL;
> /* Use BT if video standard can be read and is 60 Hz format */
> - if (!v4l2_subdev_call(vin_to_source(vin), video, g_std, &std)) {
> - if (std & V4L2_STD_525_60)
> - vnmc = VNMC_IM_FULL | VNMC_FOC;
> - }
> + if (vin->std & V4L2_STD_525_60)
> + vnmc = VNMC_IM_FULL | VNMC_FOC;
> break;
> case V4L2_FIELD_INTERLACED_TB:
> vnmc = VNMC_IM_FULL;
> diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> index c4be0bcb8b16f941..43370c57d4b6239a 100644
> --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
> +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> @@ -477,6 +477,8 @@ static int rvin_s_std(struct file *file, void *priv, v4l2_std_id a)
> if (ret < 0)
> return ret;
>
> + vin->std = a;
> +
> /* Changing the standard will change the width/height */
> return rvin_reset_format(vin);
> }
> @@ -484,9 +486,13 @@ static int rvin_s_std(struct file *file, void *priv, v4l2_std_id a)
> static int rvin_g_std(struct file *file, void *priv, v4l2_std_id *a)
> {
> struct rvin_dev *vin = video_drvdata(file);
> - struct v4l2_subdev *sd = vin_to_source(vin);
>
> - return v4l2_subdev_call(sd, video, g_std, a);
> + if (v4l2_subdev_has_op(vin_to_source(vin), pad, dv_timings_cap))
> + return -ENOIOCTLCMD;
> +
> + *a = vin->std;
> +
> + return 0;
> }
>
> static int rvin_subscribe_event(struct v4l2_fh *fh,
> diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
> index 7fcf984f21466855..458373af9e60ea07 100644
> --- a/drivers/media/platform/rcar-vin/rcar-vin.h
> +++ b/drivers/media/platform/rcar-vin/rcar-vin.h
> @@ -119,6 +119,7 @@ struct rvin_info {
> * @crop: active cropping
> * @compose: active composing
> * @source: active size of the video source
> + * @std: active video standard of the video source
> */
> struct rvin_dev {
> struct device *dev;
> @@ -146,6 +147,7 @@ struct rvin_dev {
> struct v4l2_rect crop;
> struct v4l2_rect compose;
> struct v4l2_rect source;
> + v4l2_std_id std;
> };
>
> #define vin_to_source(vin) ((vin)->digital->subdev)
>
