From: Alberto Panizzo Date: Wed, 12 Jan 2011 11:16:19 +0000 (-0300) Subject: [media] V4L: soc_mediabus: add a method to obtain the number of samples per pixel X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=48a3c77338d725d4976fa792d822eb940ce5c296;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [media] V4L: soc_mediabus: add a method to obtain the number of samples per pixel Add a function to calculate the number of samples on the media-bus, required to retrieve one pixel of a certain format. Signed-off-by: Alberto Panizzo Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/soc_mediabus.c b/drivers/media/video/soc_mediabus.c index 91391214c682..73b4138709e4 100644 --- a/drivers/media/video/soc_mediabus.c +++ b/drivers/media/video/soc_mediabus.c @@ -132,6 +132,20 @@ static const struct soc_mbus_pixelfmt mbus_fmt[] = { }, }; +int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf) +{ + switch (mf->packing) { + case SOC_MBUS_PACKING_NONE: + case SOC_MBUS_PACKING_EXTEND16: + return 1; + case SOC_MBUS_PACKING_2X8_PADHI: + case SOC_MBUS_PACKING_2X8_PADLO: + return 2; + } + return -EINVAL; +} +EXPORT_SYMBOL(soc_mbus_samples_per_pixel); + s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf) { switch (mf->packing) { diff --git a/include/media/soc_mediabus.h b/include/media/soc_mediabus.h index 037cd7be001e..f5522b3f175a 100644 --- a/include/media/soc_mediabus.h +++ b/include/media/soc_mediabus.h @@ -61,5 +61,6 @@ struct soc_mbus_pixelfmt { const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc( enum v4l2_mbus_pixelcode code); s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf); +int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf); #endif