[PATCH v2 5/5] media: ti: j721e-csi2rx: add support for RGB formats

[Julien Massot <julien.massot@collabora.com>]

From: Jai Luthra <j-luthra@ti.com>

Add support for RGB565, RGB888 and BGR888 media bus formats.

The pixel formats for these have a different byte-order than the MIPI
bus formats, given the SHIM IP [1] unpacks them into memory as follows:

MIPI RGB888 unpacks to:
BYTE3		BYTE2		BYTE1		BYTE0
00000000	RRRRRRRR	GGGGGGGG	BBBBBBBB

MIPI RGB565 unpacks to:
BIT 15-11	BIT 10-5	BIT 4-0
RRRRR		GGGGGG		BBBBB

[1]: AM62x TRM: 12.6.1.4.5 "CSI_RX_IF Data Memory Organization Details"

Link: https://www.ti.com/lit/pdf/spruiv7
Signed-off-by: Jai Luthra <j-luthra@ti.com>
Signed-off-by: Julien Massot <julien.massot@collabora.com>
Tested-by: Julien Massot <julien.massot@collabora.com>
---
 .../platform/ti/j721e-csi2rx/j721e-csi2rx.c    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 6e58112957ce..15ddc851737a 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -188,6 +188,24 @@ static const struct ti_csi2rx_fmt ti_csi2rx_formats[] = {
 		.csi_dt			= MIPI_CSI2_DT_RAW10,
 		.bpp			= 16,
 		.size			= SHIM_DMACNTX_SIZE_16,
+	}, {
+		.fourcc			= V4L2_PIX_FMT_RGB565X,
+		.code			= MEDIA_BUS_FMT_RGB565_1X16,
+		.csi_dt			= MIPI_CSI2_DT_RGB565,
+		.bpp			= 16,
+		.size			= SHIM_DMACNTX_SIZE_16,
+	}, {
+		.fourcc			= V4L2_PIX_FMT_XBGR32,
+		.code			= MEDIA_BUS_FMT_RGB888_1X24,
+		.csi_dt			= MIPI_CSI2_DT_RGB888,
+		.bpp			= 32,
+		.size			= SHIM_DMACNTX_SIZE_32,
+	}, {
+		.fourcc			= V4L2_PIX_FMT_RGBX32,
+		.code			= MEDIA_BUS_FMT_BGR888_1X24,
+		.csi_dt			= MIPI_CSI2_DT_RGB888,
+		.bpp			= 32,
+		.size			= SHIM_DMACNTX_SIZE_32,
 	},
 
 	/* More formats can be supported but they are not listed for now. */
-- 
2.43.0