Hello,

On 4/28/20 4:46 AM, Dafna Hirschfeld wrote:
> hi,
> Thanks for the patches!
> 
> On 28.04.20 01:03, 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 <[email protected]>
>> Signed-off-by: Vitor Massaru Iha <[email protected]>
>> Signed-off-by: Nícolas F. R. A. Prado <[email protected]>
>> ---
>>
>> Changes in v3:
>> - Rename vimc_deb_is_src_code_invalid() to vimc_deb_src_code_is_valid()
>> - Change vimc_deb_src_code_is_valid() to return bool
>>
>> 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
>>
>>   .../media/test-drivers/vimc/vimc-debayer.c    | 61 +++++++++++++++----
>>   1 file changed, 49 insertions(+), 12 deletions(-)
>>
>> diff --git a/drivers/media/test-drivers/vimc/vimc-debayer.c 
>> b/drivers/media/test-drivers/vimc/vimc-debayer.c
>> index d10aee9f84c4..7e87706d417e 100644
>> --- a/drivers/media/test-drivers/vimc/vimc-debayer.c
>> +++ b/drivers/media/test-drivers/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 bool vimc_deb_src_code_is_valid(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 true;
>> +
>> +    return false;
>> +}
>> +
>>   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_src_code_is_valid(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_src_code_is_valid(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,
> I guess the name of the function should now change to 
> vimc_deb_set_rgb_mbus_fmt ?
> Or better vimc_deb_process_rgb_frame.
> Also, it seems that it is a assigned as a callback so that each src_fmt have 
> a different callback
> but you already did it with a switch case. So maybe you can add a patch to 
> call it directly

Agreed that it should be renamed. Removing the callback could be done later (up 
to you Nícolas).

With the rename, and with or without the callback removal:
Acked-by: Helen Koike <[email protected]>

> 
> Thanks,
> Dafna
> 
>>                             unsigned int col,
>>                             unsigned int rgb[3])
>>   {
>> +    const struct vimc_pix_map *vpix;
>>       unsigned int i, index;
>>   +    vpix = vimc_pix_map_by_code(vdeb->src_code);
>>       index = VIMC_FRAME_INDEX(lin, col, vdeb->sink_fmt.width, 3);
>> -    for (i = 0; i < 3; i++)
>> -        vdeb->src_frame[index + i] = rgb[i];
>> +    for (i = 0; i < 3; i++) {
>> +        switch (vpix->pixelformat) {
>> +        case V4L2_PIX_FMT_RGB24:
>> +            vdeb->src_frame[index + i] = rgb[i];
>> +            break;
>> +        case V4L2_PIX_FMT_BGR24:
>> +            vdeb->src_frame[index + i] = rgb[2-i];
>> +            break;
>> +        }
>> +    }
>>   }
>>     static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
>>
> 
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