[PATCH v3 03/31] media: v4l2-common: Add helper function media_bus_fmt_to_csi2_(bpp|dt)()
From: Frank Li <Frank.Li@nxp.com>
Date: 2025-08-21 20:16:30
Also in:
imx, linux-devicetree, linux-media, linux-phy, linux-staging, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
Add helper function media_bus_fmt_to_csi2_bpp() to get media bus fmt's bpp
to reduce codes such as
static const struct imx7_csi_pixfmt pixel_formats[] = {
{
.fourcc = V4L2_PIX_FMT_UYVY,
.codes = IMX_BUS_FMTS(
MEDIA_BUS_FMT_UYVY8_2X8,
MEDIA_BUS_FMT_UYVY8_1X16
),
.yuv = true,
.bpp = 16,
},
....
.bpp can be removed from pixel_formats with this helper function.
CSI2 data type is defined by MIPI Camera Serial Interface 2 Spec Ver4.1.
See section 9.4.
Add helper function media_bus_fmt_to_csi2_dt() to convert media bus fmt to
MIPI defined data type and avoid below duplicated static array in each CSI2
drivers.
{
.code = MEDIA_BUS_FMT_UYVY8_1X16,
.data_type = MIPI_CSI2_DT_YUV422_8B,
}
Only add known map for dt type. Need update media_bus_fmt_info when new
mapping used.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Change in v3:
- squash two help function patch to one.
- use media_bus_fmt_info to do map.
---
drivers/media/v4l2-core/v4l2-common.c | 149 ++++++++++++++++++++++++++++++++++
include/media/mipi-csi2.h | 30 +++++++
2 files changed, 179 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index a5334aa35992e5f57fb228c33d40c51fdafdc135..a75987aa5fc69d6368709b7d521bede666da9513 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c@@ -46,6 +46,7 @@ #include <linux/uaccess.h> #include <asm/io.h> #include <asm/div64.h> +#include <media/mipi-csi2.h> #include <media/v4l2-common.h> #include <media/v4l2-device.h> #include <media/v4l2-ctrls.h>
@@ -757,3 +758,151 @@ struct clk *devm_v4l2_sensor_clk_get(struct device *dev, const char *id) return clk_hw->clk; } EXPORT_SYMBOL_GPL(devm_v4l2_sensor_clk_get); + +static const struct media_bus_fmt_info media_bus_fmt_info[] = { + { .fmt = MEDIA_BUS_FMT_RGB444_1X12, .bpp = 12}, + { .fmt = MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_RGB565_1X16, .dt = MIPI_CSI2_DT_RGB565, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_BGR565_2X8_BE, .dt = MIPI_CSI2_DT_RGB565, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_BGR565_2X8_LE, .dt = MIPI_CSI2_DT_RGB565, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_RGB565_2X8_BE, .dt = MIPI_CSI2_DT_RGB565, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_RGB565_2X8_LE, .dt = MIPI_CSI2_DT_RGB565, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_RGB666_1X18, .bpp = 18}, + { .fmt = MEDIA_BUS_FMT_RGB666_2X9_BE, .bpp = 18}, + { .fmt = MEDIA_BUS_FMT_BGR666_1X18, .bpp = 18}, + { .fmt = MEDIA_BUS_FMT_RBG888_1X24, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB666_1X24_CPADHI, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_BGR666_1X24_CPADHI, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB565_1X24_CPADHI, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG, .bpp = 21}, + { .fmt = MEDIA_BUS_FMT_BGR888_1X24, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_BGR888_3X8, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_GBR888_1X24, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB888_1X24, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB888_2X12_BE, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB888_2X12_LE, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB888_3X8, .dt = MIPI_CSI2_DT_RGB888, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB888_3X8_DELTA, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG, .bpp = 28}, + { .fmt = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA, .bpp = 28}, + { .fmt = MEDIA_BUS_FMT_RGB666_1X30_CPADLO, .bpp = 30}, + { .fmt = MEDIA_BUS_FMT_RGB888_1X30_CPADLO, .bpp = 30}, + { .fmt = MEDIA_BUS_FMT_ARGB8888_1X32, .bpp = 32}, + { .fmt = MEDIA_BUS_FMT_RGB888_1X32_PADHI, .bpp = 32}, + { .fmt = MEDIA_BUS_FMT_RGB101010_1X30, .bpp = 30}, + { .fmt = MEDIA_BUS_FMT_RGB101010_1X7X5_SPWG, .bpp = 35}, + { .fmt = MEDIA_BUS_FMT_RGB101010_1X7X5_JEIDA, .bpp = 35}, + { .fmt = MEDIA_BUS_FMT_RGB666_1X36_CPADLO, .bpp = 36}, + { .fmt = MEDIA_BUS_FMT_RGB888_1X36_CPADLO, .bpp = 36}, + { .fmt = MEDIA_BUS_FMT_RGB121212_1X36, .bpp = 36}, + { .fmt = MEDIA_BUS_FMT_RGB161616_1X48, .bpp = 48}, + + { .fmt = MEDIA_BUS_FMT_Y8_1X8, .dt = MIPI_CSI2_DT_RAW8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_UV8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_UYVY8_1_5X8, .bpp = 40}, + { .fmt = MEDIA_BUS_FMT_VYUY8_1_5X8, .bpp = 40}, + { .fmt = MEDIA_BUS_FMT_YUYV8_1_5X8, .bpp = 40}, + { .fmt = MEDIA_BUS_FMT_YVYU8_1_5X8, .bpp = 40}, + { .fmt = MEDIA_BUS_FMT_UYVY8_2X8, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_VYUY8_2X8, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_YUYV8_2X8, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_YVYU8_2X8, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_Y10_1X10, .dt = MIPI_CSI2_DT_RAW10, .bpp = 10}, + { .fmt = MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_UYVY10_2X10, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_VYUY10_2X10, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_YUYV10_2X10, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_YVYU10_2X10, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_Y12_1X12, .dt = MIPI_CSI2_DT_RAW12, .bpp = 12}, + { .fmt = MEDIA_BUS_FMT_UYVY12_2X12, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_VYUY12_2X12, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_YUYV12_2X12, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_YVYU12_2X12, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_Y14_1X14, .dt = MIPI_CSI2_DT_RAW14, .bpp = 14}, + { .fmt = MEDIA_BUS_FMT_Y16_1X16, .dt = MIPI_CSI2_DT_RAW16, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_UYVY8_1X16, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_VYUY8_1X16, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_YUYV8_1X16, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_YVYU8_1X16, .dt = MIPI_CSI2_DT_YUV422_8B, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_YDYUYDYV8_1X16, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_UYVY10_1X20, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_VYUY10_1X20, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_YUYV10_1X20, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_YVYU10_1X20, .dt = MIPI_CSI2_DT_YUV422_10B, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_VUY8_1X24, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_YUV8_1X24, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_UYYVYY8_0_5X24, .dt = MIPI_CSI2_DT_YUV420_8B, .bpp = 120}, + { .fmt = MEDIA_BUS_FMT_UYVY12_1X24, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_VYUY12_1X24, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_YUYV12_1X24, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_YVYU12_1X24, .bpp = 24}, + { .fmt = MEDIA_BUS_FMT_YUV10_1X30, .bpp = 30}, + { .fmt = MEDIA_BUS_FMT_UYYVYY10_0_5X30, .bpp = 150}, + { .fmt = MEDIA_BUS_FMT_AYUV8_1X32, .bpp = 32}, + { .fmt = MEDIA_BUS_FMT_UYYVYY12_0_5X36, .bpp = 180}, + { .fmt = MEDIA_BUS_FMT_YUV12_1X36, .bpp = 36}, + { .fmt = MEDIA_BUS_FMT_YUV16_1X48, .bpp = 48}, + { .fmt = MEDIA_BUS_FMT_UYYVYY16_0_5X48, .bpp = 240}, + + { .fmt = MEDIA_BUS_FMT_SBGGR8_1X8, .dt = MIPI_CSI2_DT_RAW8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SGBRG8_1X8, .dt = MIPI_CSI2_DT_RAW8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SGRBG8_1X8, .dt = MIPI_CSI2_DT_RAW8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SRGGB8_1X8, .dt = MIPI_CSI2_DT_RAW8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_SBGGR10_1X10, .dt = MIPI_CSI2_DT_RAW10, .bpp = 10}, + { .fmt = MEDIA_BUS_FMT_SGBRG10_1X10, .dt = MIPI_CSI2_DT_RAW10, .bpp = 10}, + { .fmt = MEDIA_BUS_FMT_SGRBG10_1X10, .dt = MIPI_CSI2_DT_RAW10, .bpp = 10}, + { .fmt = MEDIA_BUS_FMT_SRGGB10_1X10, .dt = MIPI_CSI2_DT_RAW10, .bpp = 10}, + { .fmt = MEDIA_BUS_FMT_SBGGR12_1X12, .dt = MIPI_CSI2_DT_RAW12, .bpp = 12}, + { .fmt = MEDIA_BUS_FMT_SGBRG12_1X12, .dt = MIPI_CSI2_DT_RAW12, .bpp = 12}, + { .fmt = MEDIA_BUS_FMT_SGRBG12_1X12, .dt = MIPI_CSI2_DT_RAW12, .bpp = 12}, + { .fmt = MEDIA_BUS_FMT_SRGGB12_1X12, .dt = MIPI_CSI2_DT_RAW12, .bpp = 12}, + { .fmt = MEDIA_BUS_FMT_SBGGR14_1X14, .dt = MIPI_CSI2_DT_RAW14, .bpp = 14}, + { .fmt = MEDIA_BUS_FMT_SGBRG14_1X14, .dt = MIPI_CSI2_DT_RAW14, .bpp = 14}, + { .fmt = MEDIA_BUS_FMT_SGRBG14_1X14, .dt = MIPI_CSI2_DT_RAW14, .bpp = 14}, + { .fmt = MEDIA_BUS_FMT_SRGGB14_1X14, .dt = MIPI_CSI2_DT_RAW14, .bpp = 14}, + { .fmt = MEDIA_BUS_FMT_SBGGR16_1X16, .dt = MIPI_CSI2_DT_RAW16, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_SGBRG16_1X16, .dt = MIPI_CSI2_DT_RAW16, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_SGRBG16_1X16, .dt = MIPI_CSI2_DT_RAW16, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_SRGGB16_1X16, .dt = MIPI_CSI2_DT_RAW16, .bpp = 16}, + + { .fmt = MEDIA_BUS_FMT_JPEG_1X8, .bpp = 8}, + + { .fmt = MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8, .bpp = 8}, + + { .fmt = MEDIA_BUS_FMT_AHSV8888_1X32, .bpp = 8}, + + { .fmt = MEDIA_BUS_FMT_META_8, .bpp = 8}, + { .fmt = MEDIA_BUS_FMT_META_10, .bpp = 10}, + { .fmt = MEDIA_BUS_FMT_META_12, .bpp = 12}, + { .fmt = MEDIA_BUS_FMT_META_14, .bpp = 14}, + { .fmt = MEDIA_BUS_FMT_META_16, .bpp = 16}, + { .fmt = MEDIA_BUS_FMT_META_20, .bpp = 20}, + { .fmt = MEDIA_BUS_FMT_META_24, .bpp = 24}, +}; + +const struct media_bus_fmt_info *media_bus_fmt_info_get(u32 bus_fmt) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(media_bus_fmt_info); i++) + if (media_bus_fmt_info[i].fmt == bus_fmt) + return &media_bus_fmt_info[i]; + + return NULL; +} +EXPORT_SYMBOL_GPL(media_bus_fmt_info_get);
diff --git a/include/media/mipi-csi2.h b/include/media/mipi-csi2.h
index 40fc0264250d779ab5dfa7d2fe16e6f1382c07d4..3227d28224b7c32ef2745548391da9e792cfa559 100644
--- a/include/media/mipi-csi2.h
+++ b/include/media/mipi-csi2.h@@ -8,6 +8,8 @@ #ifndef _MEDIA_MIPI_CSI2_H #define _MEDIA_MIPI_CSI2_H +/* DT value ref to MIPI Camera Serial Interface 2 Spec Ver4.1 section 9.4 */ + /* Short packet data types */ #define MIPI_CSI2_DT_FS 0x00 #define MIPI_CSI2_DT_FE 0x01
@@ -44,4 +46,32 @@ #define MIPI_CSI2_DT_RAW20 0x2f #define MIPI_CSI2_DT_USER_DEFINED(n) (0x30 + (n)) /* 0..7 */ +/** + * struct media_bus_fmt_info - information about a media bus format + * @fmt: media bus format identifier (MEDIA_BUS_FMT_*) + * @dt: data type define in MIPI spec (MIPI_CSI2_DT *) + * @bpp: bit width per pixel + */ +struct media_bus_fmt_info { + u32 fmt; + u32 dt; + u8 bpp; +}; + +const struct media_bus_fmt_info *media_bus_fmt_info_get(u32 bus_fmt); + +static inline int media_bus_fmt_to_csi2_dt(int bus_fmt) +{ + const struct media_bus_fmt_info *info = media_bus_fmt_info_get(bus_fmt); + + return info ? info->dt : 0; +} + +static inline int media_bus_fmt_to_csi2_bpp(int bus_fmt) +{ + const struct media_bus_fmt_info *info = media_bus_fmt_info_get(bus_fmt); + + return info ? info->bpp : 0; +} + #endif /* _MEDIA_MIPI_CSI2_H */
--
2.34.1