[PATCH 5/7] drm/vkms: Add comments to format tests

[Arthur Grillo]

Signed-off-by: Arthur Grillo <arthurgrillo@xxxxxxxxxx>
---
 drivers/gpu/drm/vkms/tests/vkms_format_test.c | 67 +++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/drivers/gpu/drm/vkms/tests/vkms_format_test.c b/drivers/gpu/drm/vkms/tests/vkms_format_test.c
index 3522ecee960f..66cdd83c3d25 100644
--- a/drivers/gpu/drm/vkms/tests/vkms_format_test.c
+++ b/drivers/gpu/drm/vkms/tests/vkms_format_test.c
@@ -24,7 +24,24 @@ struct yuv_u8_to_argb_u16_case {
 	} colors[TEST_BUFF_SIZE];
 };
 
+/*
+ * The YUV color representation were acquired via the colour python framework.
+ * Below are the function calls used for generating each case.
+ *
+ * for more information got to the docs:
+ * https://colour.readthedocs.io/en/master/generated/colour.RGB_to_YCbCr.html
+ */
 static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
+	/*
+	 * colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
+	 *                     K=colour.WEIGHTS_YCBCR["ITU-R BT.601"],
+	 *                     in_bits = 16,
+	 *                     in_legal = False,
+	 *                     in_int = True,
+	 *                     out_bits = 8,
+	 *                     out_legal = False,
+	 *                     out_int = True)
+	 */
 	{
 		.encoding = DRM_COLOR_YCBCR_BT601,
 		.range = DRM_COLOR_YCBCR_FULL_RANGE,
@@ -38,6 +55,16 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
 			{"blue",  {0x1d, 0xff, 0x6b}, {0xffff, 0x0000, 0x0000, 0xffff}},
 		},
 	},
+	/*
+	 * colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
+	 *                     K=colour.WEIGHTS_YCBCR["ITU-R BT.601"],
+	 *                     in_bits = 16,
+	 *                     in_legal = False,
+	 *                     in_int = True,
+	 *                     out_bits = 8,
+	 *                     out_legal = True,
+	 *                     out_int = True)
+	 */
 	{
 		.encoding = DRM_COLOR_YCBCR_BT601,
 		.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
@@ -51,6 +78,16 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
 			{"blue",  {0x29, 0xf0, 0x6e}, {0xffff, 0x0000, 0x0000, 0xffff}},
 		},
 	},
+	/*
+	 * colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
+	 *                     K=colour.WEIGHTS_YCBCR["ITU-R BT.709"],
+	 *                     in_bits = 16,
+	 *                     in_legal = False,
+	 *                     in_int = True,
+	 *                     out_bits = 8,
+	 *                     out_legal = False,
+	 *                     out_int = True)
+	 */
 	{
 		.encoding = DRM_COLOR_YCBCR_BT709,
 		.range = DRM_COLOR_YCBCR_FULL_RANGE,
@@ -64,6 +101,16 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
 			{"blue",  {0x12, 0xff, 0x74}, {0xffff, 0x0000, 0x0000, 0xffff}},
 		},
 	},
+	/*
+	 * colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
+	 *                     K=colour.WEIGHTS_YCBCR["ITU-R BT.709"],
+	 *                     in_bits = 16,
+	 *                     int_legal = False,
+	 *                     in_int = True,
+	 *                     out_bits = 8,
+	 *                     out_legal = True,
+	 *                     out_int = True)
+	 */
 	{
 		.encoding = DRM_COLOR_YCBCR_BT709,
 		.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
@@ -77,6 +124,16 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
 			{"blue",  {0x20, 0xf0, 0x76}, {0xffff, 0x0000, 0x0000, 0xffff}},
 		},
 	},
+	/*
+	 * colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
+	 *                     K=colour.WEIGHTS_YCBCR["ITU-R BT.2020"],
+	 *                     in_bits = 16,
+	 *                     in_legal = False,
+	 *                     in_int = True,
+	 *                     out_bits = 8,
+	 *                     out_legal = False,
+	 *                     out_int = True)
+	 */
 	{
 		.encoding = DRM_COLOR_YCBCR_BT2020,
 		.range = DRM_COLOR_YCBCR_FULL_RANGE,
@@ -90,6 +147,16 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
 			{"blue",  {0x0f, 0xff, 0x76}, {0xffff, 0x0000, 0x0000, 0xffff}},
 		},
 	},
+	/*
+	 * colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
+	 *                     K=colour.WEIGHTS_YCBCR["ITU-R BT.2020"],
+	 *                     in_bits = 16,
+	 *                     in_legal = False,
+	 *                     in_int = True,
+	 *                     out_bits = 8,
+	 *                     out_legal = True,
+	 *                     out_int = True)
+	 */
 	{
 		.encoding = DRM_COLOR_YCBCR_BT2020,
 		.range = DRM_COLOR_YCBCR_LIMITED_RANGE,

-- 
2.43.0