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Message-ID: <5489808d-7cf8-ea70-a6bf-370f9e30d1e4@koikeco.de>
Date: Tue, 7 Apr 2020 23:30:53 -0300
From: Helen Koike <helen@...keco.de>
To: Hans Verkuil <hverkuil@...all.nl>,
"Carlos E. C. Barbosa" <climacobarbosacee@...il.com>,
Helen Koike <helen.koike@...labora.com>,
Shuah Khan <skhan@...uxfoundation.org>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
lkcamp@...ts.libreplanetbr.org
Subject: Re: [Lkcamp] [PATCH v3] media: vimc: get pixformat info from
v4l2_format_info
Hi Carlos,
On 2/25/20 9:26 AM, Hans Verkuil wrote:
> On 1/22/20 6:57 PM, Carlos E. C. Barbosa wrote:
>> From: "Carlos E.C. Barbosa" <carlosecb@...anota.com>
>>
>> There is overlapping code over two distinct lists. This repurposes vimc_pix_map
>> for mapping formats and remaps the calls to the matching v4l2_format_info.
>>
>> ---
>> Changes in v2:
>> As advised by Helen Koike and Hans Verkuil, the const qualifiers are not
>> removed, the bayer flag is kept and the unnecessary changes are not
>> made.
>>
>> Changes in v3:
>> Change declaration order of variables and some minor style changes.
>>
>> v4l2-compliance message:
>> https://pastebin.com/UkmfjuLa
>>
>> Signed-off-by: Carlos E. C. Barbosa <carlosecb@...anota.com>
>
> This Sob needs to be above the --- line!
>
> I get sparse warnings:
>
> drivers/media/platform/vimc/vimc-scaler.c:128:33: warning: variable 'vinfo' set but not used [-Wunused-but-set-variable]
> drivers/media/platform/vimc/vimc-scaler.c:181:33: warning: variable 'vinfo' set but not used [-Wunused-but-set-variable]
Just for information about how to reproduce this, please check https://www.kernel.org/doc/html/latest/dev-tools/sparse.html
Regards,
Helen
>
> It does seem that it is indeed unused.
>
> Regards,
>
> Hans
>
>> ---
>> drivers/media/platform/vimc/vimc-capture.c | 14 ++++++++-----
>> drivers/media/platform/vimc/vimc-common.c | 23 ----------------------
>> drivers/media/platform/vimc/vimc-common.h | 2 --
>> drivers/media/platform/vimc/vimc-debayer.c | 7 +++++--
>> drivers/media/platform/vimc/vimc-scaler.c | 12 +++++++++--
>> drivers/media/platform/vimc/vimc-sensor.c | 9 +++++++--
>> 6 files changed, 31 insertions(+), 36 deletions(-)
>>
>> diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
>> index 76c015898cfd..686456aad29c 100644
>> --- a/drivers/media/platform/vimc/vimc-capture.c
>> +++ b/drivers/media/platform/vimc/vimc-capture.c
>> @@ -85,6 +85,7 @@ static int vimc_cap_try_fmt_vid_cap(struct file *file, void *priv,
>> struct v4l2_format *f)
>> {
>> struct v4l2_pix_format *format = &f->fmt.pix;
>> + const struct v4l2_format_info *vinfo;
>> const struct vimc_pix_map *vpix;
>>
>> format->width = clamp_t(u32, format->width, VIMC_FRAME_MIN_WIDTH,
>> @@ -94,12 +95,13 @@ static int vimc_cap_try_fmt_vid_cap(struct file *file, void *priv,
>>
>> /* Don't accept a pixelformat that is not on the table */
>> vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
>> - if (!vpix) {
>> + if (!vpix)
>> format->pixelformat = fmt_default.pixelformat;
>> - vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
>> - }
>> +
>> + vinfo = v4l2_format_info(format->pixelformat);
>> +
>> /* TODO: Add support for custom bytesperline values */
>> - format->bytesperline = format->width * vpix->bpp;
>> + format->bytesperline = format->width * vinfo->bpp[0];
>> format->sizeimage = format->bytesperline * format->height;
>>
>> if (format->field == V4L2_FIELD_ANY)
>> @@ -386,6 +388,7 @@ struct vimc_ent_device *vimc_cap_add(struct vimc_device *vimc,
>> const char *vcfg_name)
>> {
>> struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
>> + const struct v4l2_format_info *vinfo;
>> const struct vimc_pix_map *vpix;
>> struct vimc_cap_device *vcap;
>> struct video_device *vdev;
>> @@ -435,7 +438,8 @@ struct vimc_ent_device *vimc_cap_add(struct vimc_device *vimc,
>> /* Set default frame format */
>> vcap->format = fmt_default;
>> vpix = vimc_pix_map_by_pixelformat(vcap->format.pixelformat);
>> - vcap->format.bytesperline = vcap->format.width * vpix->bpp;
>> + vinfo = v4l2_format_info(vpix->pixelformat);
>> + vcap->format.bytesperline = vcap->format.width * vinfo->bpp[0];
>> vcap->format.sizeimage = vcap->format.bytesperline *
>> vcap->format.height;
>>
>> diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
>> index 16ce9f3b7c75..8327ada1b461 100644
>> --- a/drivers/media/platform/vimc/vimc-common.c
>> +++ b/drivers/media/platform/vimc/vimc-common.c
>> @@ -21,19 +21,16 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
>> {
>> .code = MEDIA_BUS_FMT_BGR888_1X24,
>> .pixelformat = V4L2_PIX_FMT_BGR24,
>> - .bpp = 3,
>> .bayer = false,
>> },
>> {
>> .code = MEDIA_BUS_FMT_RGB888_1X24,
>> .pixelformat = V4L2_PIX_FMT_RGB24,
>> - .bpp = 3,
>> .bayer = false,
>> },
>> {
>> .code = MEDIA_BUS_FMT_ARGB8888_1X32,
>> .pixelformat = V4L2_PIX_FMT_ARGB32,
>> - .bpp = 4,
>> .bayer = false,
>> },
>>
>> @@ -41,49 +38,41 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
>> {
>> .code = MEDIA_BUS_FMT_SBGGR8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SBGGR8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGBRG8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SGBRG8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGRBG8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SGRBG8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SRGGB8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SRGGB8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SBGGR10_1X10,
>> .pixelformat = V4L2_PIX_FMT_SBGGR10,
>> - .bpp = 2,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGBRG10_1X10,
>> .pixelformat = V4L2_PIX_FMT_SGBRG10,
>> - .bpp = 2,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGRBG10_1X10,
>> .pixelformat = V4L2_PIX_FMT_SGRBG10,
>> - .bpp = 2,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SRGGB10_1X10,
>> .pixelformat = V4L2_PIX_FMT_SRGGB10,
>> - .bpp = 2,
>> .bayer = true,
>> },
>>
>> @@ -91,25 +80,21 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
>> {
>> .code = MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SBGGR10ALAW8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SGBRG10ALAW8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SGRBG10ALAW8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SRGGB10ALAW8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>>
>> @@ -117,49 +102,41 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
>> {
>> .code = MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SBGGR10DPCM8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SGBRG10DPCM8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
>> .pixelformat = V4L2_PIX_FMT_SRGGB10DPCM8,
>> - .bpp = 1,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SBGGR12_1X12,
>> .pixelformat = V4L2_PIX_FMT_SBGGR12,
>> - .bpp = 2,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGBRG12_1X12,
>> .pixelformat = V4L2_PIX_FMT_SGBRG12,
>> - .bpp = 2,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SGRBG12_1X12,
>> .pixelformat = V4L2_PIX_FMT_SGRBG12,
>> - .bpp = 2,
>> .bayer = true,
>> },
>> {
>> .code = MEDIA_BUS_FMT_SRGGB12_1X12,
>> .pixelformat = V4L2_PIX_FMT_SRGGB12,
>> - .bpp = 2,
>> .bayer = true,
>> },
>> };
>> diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
>> index 87eb8259c2a8..dd1c45334705 100644
>> --- a/drivers/media/platform/vimc/vimc-common.h
>> +++ b/drivers/media/platform/vimc/vimc-common.h
>> @@ -62,7 +62,6 @@ do { \
>> * struct vimc_pix_map - maps media bus code with v4l2 pixel format
>> *
>> * @code: media bus format code defined by MEDIA_BUS_FMT_* macros
>> - * @bbp: number of bytes each pixel occupies
>> * @pixelformat: pixel format devined by V4L2_PIX_FMT_* macros
>> *
>> * Struct which matches the MEDIA_BUS_FMT_* codes with the corresponding
>> @@ -70,7 +69,6 @@ do { \
>> */
>> struct vimc_pix_map {
>> unsigned int code;
>> - unsigned int bpp;
>> u32 pixelformat;
>> bool bayer;
>> };
>> diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
>> index 5d1b67d684bb..10d53ca129fd 100644
>> --- a/drivers/media/platform/vimc/vimc-debayer.c
>> +++ b/drivers/media/platform/vimc/vimc-debayer.c
>> @@ -303,6 +303,7 @@ static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
>> struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
>>
>> if (enable) {
>> + const struct v4l2_format_info *vinfo;
>> const struct vimc_pix_map *vpix;
>> unsigned int frame_size;
>>
>> @@ -311,12 +312,14 @@ static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
>>
>> /* Calculate the frame size of the source pad */
>> vpix = vimc_pix_map_by_code(vdeb->src_code);
>> + vinfo = v4l2_format_info(vpix->pixelformat);
>> frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
>> - vpix->bpp;
>> + vinfo->bpp[0];
>>
>> /* Save the bytes per pixel of the sink */
>> vpix = vimc_pix_map_by_code(vdeb->sink_fmt.code);
>> - vdeb->sink_bpp = vpix->bpp;
>> + vinfo = v4l2_format_info(vpix->pixelformat);
>> + vdeb->sink_bpp = vinfo->bpp[0];
>>
>> /* Get the corresponding pixel map from the table */
>> vdeb->sink_pix_map =
>> diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
>> index e2e551bc3ded..55be69ddf918 100644
>> --- a/drivers/media/platform/vimc/vimc-scaler.c
>> +++ b/drivers/media/platform/vimc/vimc-scaler.c
>> @@ -125,6 +125,7 @@ static int vimc_sca_enum_frame_size(struct v4l2_subdev *sd,
>> struct v4l2_subdev_pad_config *cfg,
>> struct v4l2_subdev_frame_size_enum *fse)
>> {
>> + const struct v4l2_format_info *vinfo;
>> const struct vimc_pix_map *vpix;
>>
>> if (fse->index)
>> @@ -135,6 +136,7 @@ static int vimc_sca_enum_frame_size(struct v4l2_subdev *sd,
>> if (!vpix || vpix->bayer)
>> return -EINVAL;
>>
>> + vinfo = v4l2_format_info(vpix->pixelformat);
>> fse->min_width = VIMC_FRAME_MIN_WIDTH;
>> fse->min_height = VIMC_FRAME_MIN_HEIGHT;
>>
>> @@ -176,12 +178,16 @@ static int vimc_sca_get_fmt(struct v4l2_subdev *sd,
>>
>> static void vimc_sca_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
>> {
>> + const struct v4l2_format_info *vinfo;
>> const struct vimc_pix_map *vpix;
>>
>> /* Only accept code in the pix map table in non bayer format */
>> vpix = vimc_pix_map_by_code(fmt->code);
>> - if (!vpix || vpix->bayer)
>> + if (!vpix || vpix->bayer) {
>> fmt->code = sink_fmt_default.code;
>> + vpix = vimc_pix_map_by_code(fmt->code);
>> + }
>> + vinfo = v4l2_format_info(vpix->pixelformat);
>>
>> fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
>> VIMC_FRAME_MAX_WIDTH) & ~1;
>> @@ -331,6 +337,7 @@ static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
>> struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
>>
>> if (enable) {
>> + const struct v4l2_format_info *vinfo;
>> const struct vimc_pix_map *vpix;
>> unsigned int frame_size;
>>
>> @@ -339,7 +346,8 @@ static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
>>
>> /* Save the bytes per pixel of the sink */
>> vpix = vimc_pix_map_by_code(vsca->sink_fmt.code);
>> - vsca->bpp = vpix->bpp;
>> + vinfo = v4l2_format_info(vpix->pixelformat);
>> + vsca->bpp = vinfo->bpp[0];
>>
>> /* Calculate the width in bytes of the src frame */
>> vsca->src_line_size = vsca->crop_rect.width *
>> diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
>> index 32380f504591..941529ddf639 100644
>> --- a/drivers/media/platform/vimc/vimc-sensor.c
>> +++ b/drivers/media/platform/vimc/vimc-sensor.c
>> @@ -102,10 +102,13 @@ static void vimc_sen_tpg_s_format(struct vimc_sen_device *vsen)
>> {
>> const struct vimc_pix_map *vpix =
>> vimc_pix_map_by_code(vsen->mbus_format.code);
>> + const struct v4l2_format_info *vinfo =
>> + v4l2_format_info(vpix->pixelformat);
>>
>> tpg_reset_source(&vsen->tpg, vsen->mbus_format.width,
>> vsen->mbus_format.height, vsen->mbus_format.field);
>> - tpg_s_bytesperline(&vsen->tpg, 0, vsen->mbus_format.width * vpix->bpp);
>> + tpg_s_bytesperline(&vsen->tpg, 0,
>> + vsen->mbus_format.width * vinfo->bpp[0]);
>> tpg_s_buf_height(&vsen->tpg, vsen->mbus_format.height);
>> tpg_s_fourcc(&vsen->tpg, vpix->pixelformat);
>> /* TODO: add support for V4L2_FIELD_ALTERNATE */
>> @@ -198,12 +201,14 @@ static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
>> container_of(sd, struct vimc_sen_device, sd);
>>
>> if (enable) {
>> + const struct v4l2_format_info *vinfo;
>> const struct vimc_pix_map *vpix;
>> unsigned int frame_size;
>>
>> /* Calculate the frame size */
>> vpix = vimc_pix_map_by_code(vsen->mbus_format.code);
>> - frame_size = vsen->mbus_format.width * vpix->bpp *
>> + vinfo = v4l2_format_info(vpix->pixelformat);
>> + frame_size = vsen->mbus_format.width * vinfo->bpp[0] *
>> vsen->mbus_format.height;
>>
>> /*
>>
>
>
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