[PATCH v2 4/4] libcamera: v4l2_subdevice: Explain sort order of formatInfoMap

[Kieran Bingham]

The sort order used in the table isn't obvious. Reference the source of
linux/media-bus-format.h at the top of the table for reference for
future updates.

Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
---

This patch replaces:
 [PATCH v2 4/4] libcamera: v4l2subdev: Organise the formatInfoMap

 src/libcamera/v4l2_subdevice.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp
index 265240dbd405..6d0785b7b484 100644
--- a/src/libcamera/v4l2_subdevice.cpp
+++ b/src/libcamera/v4l2_subdevice.cpp
@@ -57,6 +57,7 @@ struct V4L2SubdeviceFormatInfo {
  * bus codes
  */
 const std::map<uint32_t, V4L2SubdeviceFormatInfo> formatInfoMap = {
+	/* This table is sorted to match the order in linux/media-bus-format.h */
 	{ MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE, { 16, "RGB444_2X8_PADHI_BE", PixelFormatInfo::ColourEncodingRGB } },
 	{ MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE, { 16, "RGB444_2X8_PADHI_LE", PixelFormatInfo::ColourEncodingRGB } },
 	{ MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, { 16, "RGB555_2X8_PADHI_BE", PixelFormatInfo::ColourEncodingRGB } },
-- 
2.34.1