[media] vivid-tpg: add support for V4L2_PIX_FMT_GREY

Add monochrome support to the TPG.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/vivid/vivid-tpg.c b/drivers/media/platform/vivid/vivid-tpg.c
index 79dc310..ccb4a6b 100644 (file)
--- a/drivers/media/platform/vivid/vivid-tpg.c
+++ b/drivers/media/platform/vivid/vivid-tpg.c
@@ -199,6 +199,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
        case V4L2_PIX_FMT_XBGR32:
        case V4L2_PIX_FMT_ARGB32:
        case V4L2_PIX_FMT_ABGR32:
+       case V4L2_PIX_FMT_GREY:
                tpg->is_yuv = false;
                break;
        case V4L2_PIX_FMT_YUV420M:
@@ -279,6 +280,9 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
        case V4L2_PIX_FMT_ABGR32:
                tpg->twopixelsize[0] = 2 * 4;
                break;
+       case V4L2_PIX_FMT_GREY:
+               tpg->twopixelsize[0] = 2;
+               break;
        case V4L2_PIX_FMT_NV12:
        case V4L2_PIX_FMT_NV21:
        case V4L2_PIX_FMT_NV12M:
@@ -598,7 +602,7 @@ static void precalculate_color(struct tpg_data *tpg, int k)
                g <<= 4;
                b <<= 4;
        }
-       if (tpg->qual == TPG_QUAL_GRAY) {
+       if (tpg->qual == TPG_QUAL_GRAY || tpg->fourcc == V4L2_PIX_FMT_GREY) {
                /* Rec. 709 Luma function */
                /* (0.2126, 0.7152, 0.0722) * (255 * 256) */
                r = g = b = (13879 * r + 46688 * g + 4713 * b) >> 16;
@@ -739,6 +743,9 @@ static void gen_twopix(struct tpg_data *tpg,
        b_v = tpg->colors[color][2]; /* B or precalculated V */
 
        switch (tpg->fourcc) {
+       case V4L2_PIX_FMT_GREY:
+               buf[0][offset] = r_y;
+               break;
        case V4L2_PIX_FMT_YUV422P:
        case V4L2_PIX_FMT_YUV420:
        case V4L2_PIX_FMT_YUV420M: