gpu: ipu-v3: Add ipu_mbus_code_to_colorspace()

Add ipu_mbus_code_to_colorspace() to find ipu_color_space from a
media bus pixel format code.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index f5a4e1ac2b50..49ee990b4d1f 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -101,6 +101,19 @@ enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat)
 }
 EXPORT_SYMBOL_GPL(ipu_pixelformat_to_colorspace);
 
+enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code)
+{
+        switch (mbus_code & 0xf000) {
+        case 0x1000:
+                return IPUV3_COLORSPACE_RGB;
+        case 0x2000:
+                return IPUV3_COLORSPACE_YUV;
+        default:
+                return IPUV3_COLORSPACE_UNKNOWN;
+        }
+}
+EXPORT_SYMBOL_GPL(ipu_mbus_code_to_colorspace);
+
 struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned num)
 {
         struct ipuv3_channel *channel;