[PATCH v4 09/11] drm: xlnx: zynqmp: Add support for Y8 and Y10_P32

Tomi Valkeinen
2025-03-26T13:23:33Z

Add support for Y8 and Y10_P32 formats. We also need to add new csc
matrices for the y-only formats.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
drivers/gpu/drm/xlnx/zynqmp_disp.c | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 1dc77f2e4262..ae8b4073edf6 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -307,6 +307,16 @@ static const struct zynqmp_disp_format avbuf_vid_fmts[] = {
.buf_fmt = ZYNQMP_DISP_AV_BUF_FMT_NL_VID_YV16CI_10,
.swap = false,
.sf = scaling_factors_101010,
+ }, {
+ .drm_fmt = DRM_FORMAT_Y8,
+ .buf_fmt = ZYNQMP_DISP_AV_BUF_FMT_NL_VID_MONO,
+ .swap = false,
+ .sf = scaling_factors_888,
+ }, {
+ .drm_fmt = DRM_FORMAT_Y10_P32,
+ .buf_fmt = ZYNQMP_DISP_AV_BUF_FMT_NL_VID_YONLY_10,
+ .swap = false,
+ .sf = scaling_factors_101010,
},
};

@@ -697,6 +707,16 @@ static const u32 csc_sdtv_to_rgb_offsets[] = {
0x0, 0x1800, 0x1800
};

+static const u16 csc_sdtv_to_rgb_yonly_matrix[] = {
+ 0x0, 0x0, 0x1000,
+ 0x0, 0x0, 0x1000,
+ 0x0, 0x0, 0x1000,
+};
+
+static const u32 csc_sdtv_to_rgb_yonly_offsets[] = {
+ 0x1800, 0x1800, 0x0
+};
+
/**
* zynqmp_disp_blend_set_output_format - Set the output format of the blender
* @disp: Display controller
@@ -846,7 +866,11 @@ static void zynqmp_disp_blend_layer_enable(struct zynqmp_disp *disp,
ZYNQMP_DISP_V_BLEND_LAYER_CONTROL(layer->id),
val);

- if (layer->drm_fmt->is_yuv) {
+ if (layer->drm_fmt->format == DRM_FORMAT_Y8 ||
+ layer->drm_fmt->format == DRM_FORMAT_Y10_P32) {
+ coeffs = csc_sdtv_to_rgb_yonly_matrix;
+ offsets = csc_sdtv_to_rgb_yonly_offsets;
+ } else if (layer->drm_fmt->is_yuv) {
coeffs = csc_sdtv_to_rgb_matrix;
offsets = csc_sdtv_to_rgb_offsets;
} else {

--
2.43.0