video: hm01b0: add VIDEO_PIX_FMT_Y4

added it to video.h

added it to formats table

Signed-off-by: Kurt Eckhardt <kurte@rockisland.com>

Author: KurtE

drivers/video/hm01b0.c

@@ -57,6 +57,9 @@ enum hm01b0_resolution {
 	RESOLUTION_164x122,
 	RESOLUTION_326x244,
 	RESOLUTION_326x324,
+	RESOLUTION_164x122_Y4,
+	RESOLUTION_326x244_Y4,
+	RESOLUTION_326x324_Y4,
 	RESOLUTION_164x122_BAYER,
 	RESOLUTION_326x244_BAYER,
 	RESOLUTION_326x324_BAYER,
@@ -96,6 +99,9 @@ struct video_reg *hm01b0_init_regs[] = {
 	[RESOLUTION_164x122] = hm01b0_160x120_regs,
 	[RESOLUTION_326x244] = hm01b0_320x240_regs,
 	[RESOLUTION_326x324] = hm01b0_320x320_regs,
+	[RESOLUTION_164x122_Y4] = hm01b0_160x120_regs,
+	[RESOLUTION_326x244_Y4] = hm01b0_320x240_regs,
+	[RESOLUTION_326x324_Y4] = hm01b0_320x320_regs,
 	[RESOLUTION_164x122_BAYER] = hm01b0_160x120_regs,
 	[RESOLUTION_326x244_BAYER] = hm01b0_320x240_regs,
 	[RESOLUTION_326x324_BAYER] = hm01b0_320x320_regs,
@@ -141,6 +147,9 @@ static const struct video_format_cap hm01b0_fmts[] = {
 	HM01B0_VIDEO_FORMAT_CAP(164, 122, VIDEO_PIX_FMT_GREY),
 	HM01B0_VIDEO_FORMAT_CAP(326, 244, VIDEO_PIX_FMT_GREY),
 	HM01B0_VIDEO_FORMAT_CAP(326, 324, VIDEO_PIX_FMT_GREY),
+	HM01B0_VIDEO_FORMAT_CAP(164, 122, VIDEO_PIX_FMT_Y4),
+	HM01B0_VIDEO_FORMAT_CAP(326, 324, VIDEO_PIX_FMT_Y4),
+	HM01B0_VIDEO_FORMAT_CAP(326, 244, VIDEO_PIX_FMT_Y4),
 	HM01B0_VIDEO_FORMAT_CAP(164, 122, VIDEO_PIX_FMT_SBGGR8),
 	HM01B0_VIDEO_FORMAT_CAP(326, 324, VIDEO_PIX_FMT_SBGGR8),
 	HM01B0_VIDEO_FORMAT_CAP(326, 244, VIDEO_PIX_FMT_SBGGR8),

include/zephyr/drivers/video.h

@@ -1338,6 +1338,15 @@ int video_estimate_fmt_size(struct video_format *fmt);
  */
 #define VIDEO_PIX_FMT_GREY VIDEO_FOURCC('G', 'R', 'E', 'Y')
 
+
+/**
+ * @code{.unparsed}
+ *   0          1          2          3          3 2 1 0
+ * | 0000Yyyy | 0000Yyyy | 0000Yyyy | 0000Yyyy | 0000Yyyy | ...
+ * @endcode
+ */
+#define VIDEO_PIX_FMT_Y4      VIDEO_FOURCC('Y', '0', '4', ' ') /*  4  Greyscale     */
+
 /**
  * @code{.unparsed}
  *   0          1          2          3          3 2 1 0
@@ -1853,6 +1862,7 @@ static inline unsigned int video_bits_per_pixel(uint32_t pixfmt)
 	case VIDEO_PIX_FMT_Y16:
 	case VIDEO_PIX_FMT_NV16:
 	case VIDEO_PIX_FMT_NV61:
+	case VIDEO_PIX_FMT_Y4:
 		return 16;
 	case VIDEO_PIX_FMT_BGR24:
 	case VIDEO_PIX_FMT_RGB24: