MLK-18772: ISI: correct isi RGB to YUV conversion coefficients

Correct RGB to YUV conversion coefficients and change csc mode
to RGB to YCbCr

Signed-off-by: Guoniu.Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Robby.Cai <robby.cai@nxp.com>

diff --git a/drivers/media/platform/imx8/mxc-isi-hw.c b/drivers/media/platform/imx8/mxc-isi-hw.c
index 6ecfa7c..94c591c 100644 (file)
--- a/drivers/media/platform/imx8/mxc-isi-hw.c
+++ b/drivers/media/platform/imx8/mxc-isi-hw.c
@@ -71,7 +71,7 @@ static const u32 coeffs[2][6] = {
        /* YUV2RGB */
        { 0x0000012A, 0x012A0198, 0x0730079C, 0x0204012A, 0x01F00000, 0x01800180 },
        /* RGB->YUV */
-       { 0x0096004D, 0x05DA001D, 0x007005B6, 0x057C009E, 0x000005E6, 0x00000000 },
+       { 0x00810041, 0x07db0019, 0x007007b6, 0x07a20070, 0x001007ee, 0x00800080 },
 };
 
 static void printk_pixelformat(char *prefix, int val)
@@ -292,7 +292,7 @@ void mxc_isi_channel_set_csc(struct mxc_isi_dev *mxc_isi)
        } else if (is_rgb(src_fmt->fourcc) && is_yuv(dst_fmt->fourcc)) {
                /* RGB2YUV */
                csc = RGB2YUV;
-               val |= (CHNL_IMG_CTRL_CSC_MODE_RGB2YUV << CHNL_IMG_CTRL_CSC_MODE_OFFSET);
+               val |= (CHNL_IMG_CTRL_CSC_MODE_RGB2YCBCR << CHNL_IMG_CTRL_CSC_MODE_OFFSET);
        } else {
                /* Bypass CSC */
                printk("bypass csc\n");