video: Add 30bpp support

Add support for 30bpp mode where pixels are picked in 32-bit
integers but use 10 bits instead of 8 bits for each component.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>

2 files changed, 17 insertions, 3 deletions

diff --git a/drivers/video/vidconsole-uclass.c b/drivers/video/vidconsole-uclass.c
index 8132efa..f42db40 100644
--- a/drivers/video/vidconsole-uclass.c
+++ b/drivers/video/vidconsole-uclass.c
@@ -155,9 +155,14 @@ u32 vid_console_color(struct video_priv *priv, unsigned int idx)
 		break;
 	case VIDEO_BPP32:
 		if (CONFIG_IS_ENABLED(VIDEO_BPP32)) {
-			return (colors[idx].r << 16) |
-			       (colors[idx].g <<  8) |
-			       (colors[idx].b <<  0);
+			if (priv->format == VIDEO_X2R10G10B10)
+				return (colors[idx].r << 22) |
+				       (colors[idx].g << 12) |
+				       (colors[idx].b <<  2);
+			else
+				return (colors[idx].r << 16) |
+				       (colors[idx].g <<  8) |
+				       (colors[idx].b <<  0);
 		}
 		break;
 	default:
diff --git a/include/video.h b/include/video.h
index 8277333..f14fb15 100644
--- a/include/video.h
+++ b/include/video.h
@@ -64,6 +64,13 @@ enum video_log2_bpp {
 
 #define VNBITS(bpix)	(1 << (bpix))
 
+enum video_format {
+	VIDEO_UNKNOWN,
+	VIDEO_X8B8G8R8,
+	VIDEO_X8R8G8B8,
+	VIDEO_X2R10G10B10,
+};
+
 /**
  * struct video_priv - Device information used by the video uclass
  *
@@ -71,6 +78,7 @@ enum video_log2_bpp {
  * @ysize:	Number of pixels rows (e.g.. 768)
  * @rot:	Display rotation (0=none, 1=90 degrees clockwise, etc.)
  * @bpix:	Encoded bits per pixel (enum video_log2_bpp)
+ * @format:	Pixel format (enum video_format)
  * @vidconsole_drv_name:	Driver to use for the text console, NULL to
  *		select automatically
  * @font_size:	Font size in pixels (0 to use a default value)
@@ -95,6 +103,7 @@ struct video_priv {
 	ushort ysize;
 	ushort rot;
 	enum video_log2_bpp bpix;
+	enum video_format format;
 	const char *vidconsole_drv_name;
 	int font_size;