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SubjectRe: [PATCH v2 3/3] media: vimc: deb: Add support for {RGB,BGR,GBR}888 bus formats on source pad
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On 3/30/20 1:43 PM, Helen Koike wrote:
> Hello,
>
> On 3/26/20 7:06 PM, Shuah Khan wrote:
>> On 3/26/20 3:47 PM, Nícolas F. R. A. Prado wrote:
>>> Add support for RGB888_*, BGR888_* and GBR888_* media bus formats on
>>> the source pad of debayer subdevices.
>>>
>>> Co-developed-by: Vitor Massaru Iha <vitor@massaru.org>
>>> Signed-off-by: Vitor Massaru Iha <vitor@massaru.org>
>>> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@protonmail.com>
>>> ---
>>>
>>> Changes in v2:
>>> - Change commit message to reflect v2 changes
>>> - Rename variables
>>> - Fix array formatting
>>> - Add vimc_deb_is_src_code_valid function
>>> - Add other BGR888 and RGB888 formats to debayer source pad supported
>>>    formats
>>>
>>>   drivers/media/platform/vimc/vimc-debayer.c | 61 +++++++++++++++++-----
>>>   1 file changed, 49 insertions(+), 12 deletions(-)
>>>
>>> diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
>>> index baf6bf9f65b5..33a9bea770bc 100644
>>> --- a/drivers/media/platform/vimc/vimc-debayer.c
>>> +++ b/drivers/media/platform/vimc/vimc-debayer.c
>>> @@ -51,6 +51,19 @@ static const struct v4l2_mbus_framefmt sink_fmt_default = {
>>>       .colorspace = V4L2_COLORSPACE_DEFAULT,
>>>   };
>>>   +static const u32 vimc_deb_src_mbus_codes[] = {
>>> +    MEDIA_BUS_FMT_GBR888_1X24,
>>> +    MEDIA_BUS_FMT_BGR888_1X24,
>>> +    MEDIA_BUS_FMT_BGR888_3X8,
>>> +    MEDIA_BUS_FMT_RGB888_1X24,
>>> +    MEDIA_BUS_FMT_RGB888_2X12_BE,
>>> +    MEDIA_BUS_FMT_RGB888_2X12_LE,
>>> +    MEDIA_BUS_FMT_RGB888_3X8,
>>> +    MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
>>> +    MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
>>> +    MEDIA_BUS_FMT_RGB888_1X32_PADHI,
>>> +};
>>> +
>>>   static const struct vimc_deb_pix_map vimc_deb_pix_map_list[] = {
>>>       {
>>>           .code = MEDIA_BUS_FMT_SBGGR8_1X8,
>>> @@ -125,6 +138,17 @@ static const struct vimc_deb_pix_map *vimc_deb_pix_map_by_code(u32 code)
>>>       return NULL;
>>>   }
>>>   +static int vimc_deb_is_src_code_invalid(u32 code)
>>> +{
>>> +    unsigned int i;
>>> +
>>> +    for (i = 0; i < ARRAY_SIZE(vimc_deb_src_mbus_codes); i++)
>>> +        if (vimc_deb_src_mbus_codes[i] == code)
>>> +            return 0;
>>> +
>>> +    return -EINVAL;
>>> +}
>
> The naming is a bit confusing, since it checks if it is invalid, but returns a negative number if so.
>
> How about renaming to vimc_deb_src_code_is_valid ?
>
>>> +
>>>   static int vimc_deb_init_cfg(struct v4l2_subdev *sd,
>>>                    struct v4l2_subdev_pad_config *cfg)
>>>   {
>>> @@ -148,14 +172,11 @@ static int vimc_deb_enum_mbus_code(struct v4l2_subdev *sd,
>>>                      struct v4l2_subdev_pad_config *cfg,
>>>                      struct v4l2_subdev_mbus_code_enum *code)
>>>   {
>>> -    /* We only support one format for source pads */
>>>       if (VIMC_IS_SRC(code->pad)) {
>>> -        struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
>>> -
>>> -        if (code->index)
>>> +        if (code->index >= ARRAY_SIZE(vimc_deb_src_mbus_codes))
>>>               return -EINVAL;
>>>   -        code->code = vdeb->src_code;
>>> +        code->code = vimc_deb_src_mbus_codes[code->index];
>>>       } else {
>>>           if (code->index >= ARRAY_SIZE(vimc_deb_pix_map_list))
>>>               return -EINVAL;
>>> @@ -170,8 +191,6 @@ static int vimc_deb_enum_frame_size(struct v4l2_subdev *sd,
>>>                       struct v4l2_subdev_pad_config *cfg,
>>>                       struct v4l2_subdev_frame_size_enum *fse)
>>>   {
>>> -    struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
>>> -
>>>       if (fse->index)
>>>           return -EINVAL;
>>>   @@ -181,7 +200,7 @@ static int vimc_deb_enum_frame_size(struct v4l2_subdev *sd,
>>>             if (!vpix)
>>>               return -EINVAL;
>>> -    } else if (fse->code != vdeb->src_code) {
>>> +    } else if (vimc_deb_is_src_code_invalid(fse->code)) {
>>>           return -EINVAL;
>>>       }
>>>   @@ -237,6 +256,7 @@ static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
>>>   {
>>>       struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
>>>       struct v4l2_mbus_framefmt *sink_fmt;
>>> +    u32 *src_code;
>>>         if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
>>>           /* Do not change the format while stream is on */
>>> @@ -244,8 +264,10 @@ static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
>>>               return -EBUSY;
>>>             sink_fmt = &vdeb->sink_fmt;
>>> +        src_code = &vdeb->src_code;
>>>       } else {
>>>           sink_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
>>> +        src_code = &v4l2_subdev_get_try_format(sd, cfg, 1)->code;
>>>       }
>>>         /*
>>> @@ -253,9 +275,14 @@ static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
>>>        * it is propagated from the sink
>>>        */
>>>       if (VIMC_IS_SRC(fmt->pad)) {
>>> +        u32 code = fmt->format.code;
>>> +
>>>           fmt->format = *sink_fmt;
>>> -        /* TODO: Add support for other formats */
>>> -        fmt->format.code = vdeb->src_code;
>>> +
>>> +        if (!vimc_deb_is_src_code_invalid(code))
>>> +            *src_code = code;
>>> +
>>> +        fmt->format.code = *src_code;
>>>       } else {
>>>           /* Set the new format in the sink pad */
>>>           vimc_deb_adjust_sink_fmt(&fmt->format);
>>> @@ -291,11 +318,21 @@ static void vimc_deb_set_rgb_mbus_fmt_rgb888_1x24(struct vimc_deb_device *vdeb,
>>>                             unsigned int col,
>>>                             unsigned int rgb[3])
>>
>> Change this to pass a pointer and size.
>
> Hi Shuah,
>
> Modifying vimc_deb_set_rgb_mbus_fmt_rgb888_1x24() is not part of this patch, or do you mean another part of the code?
>

I know it isn't part of this patch. However, this could use improvment
and pass pointer and size.

Can be handled as a separate patch.

thanks,
-- Shuah

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