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Message-ID: <ae9fdf85-7129-e1ad-a377-bda0808545c1@collabora.com>
Date: Mon, 30 Mar 2020 16:43:53 -0300
From: Helen Koike <helen.koike@...labora.com>
To: Shuah Khan <skhan@...uxfoundation.org>,
Nícolas F. R. A. Prado
<nfraprado@...tonmail.com>, linux-media@...r.kernel.org
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil@...all.nl>,
linux-kernel@...r.kernel.org, lkcamp@...ts.libreplanetbr.org
Subject: Re: [PATCH v2 3/3] media: vimc: deb: Add support for {RGB,BGR,GBR}888
bus formats on source pad
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@...saru.org>
>> Signed-off-by: Vitor Massaru Iha <vitor@...saru.org>
>> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...tonmail.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?
Thanks for reviewing
Helen
>
>> {
>> + 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)
>>
>
> thanks,
> -- Shuah
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