From: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
The CSC matrix to use depends on the output format, its range and the
colorspace.
Since we're going to add more colorspaces, let's move the CSC matrix
retrieval to a function.
Signed-off-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 24 +++++++++++++++++++++---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index a3e0bf00e4c6..1424835bd83e 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1299,6 +1299,20 @@ static void vc5_hdmi_set_csc_coeffs_swap(struct vc4_hdmi *vc4_hdmi,
HDMI_WRITE(HDMI_CSC_34_33, (coeffs[0][3] << 16) | coeffs[0][2]);
}
+static const u16
+(*vc5_hdmi_find_yuv_csc_coeffs(struct vc4_hdmi *vc4_hdmi, u32 colorspace, bool limited))[4]
+{
+ switch (colorspace) {
+ default:
+ case DRM_MODE_COLORIMETRY_NO_DATA:
+ case DRM_MODE_COLORIMETRY_BT709_YCC:
+ case DRM_MODE_COLORIMETRY_XVYCC_709:
+ case DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED:
+ case DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT:
+ return vc5_hdmi_csc_full_rgb_to_yuv_bt709[limited];
+ }
+}
+
static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
struct drm_connector_state *state,
const struct drm_display_mode *mode)
@@ -1308,6 +1322,7 @@ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
conn_state_to_vc4_hdmi_conn_state(state);
unsigned int lim_range = vc4_hdmi_is_full_range(vc4_hdmi, vc4_state) ? 0 : 1;
unsigned long flags;
+ const u16 (*csc)[4];
u32 if_cfg = 0;
u32 if_xbar = 0x543210;
u32 csc_chan_ctl = 0;
@@ -1322,11 +1337,14 @@ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
switch (vc4_state->output_format) {
case VC4_HDMI_OUTPUT_YUV444:
- vc5_hdmi_set_csc_coeffs_swap(vc4_hdmi,
- vc5_hdmi_csc_full_rgb_to_yuv_bt709[lim_range]);
+ csc = vc5_hdmi_find_yuv_csc_coeffs(vc4_hdmi, state->colorspace, !!lim_range);
+
+ vc5_hdmi_set_csc_coeffs_swap(vc4_hdmi, csc);
break;
case VC4_HDMI_OUTPUT_YUV422:
+ csc = vc5_hdmi_find_yuv_csc_coeffs(vc4_hdmi, state->colorspace, !!lim_range);
+
csc_ctl |= VC4_SET_FIELD(VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD,
VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422) |
VC5_MT_CP_CSC_CTL_USE_444_TO_422 |
@@ -1338,7 +1356,7 @@ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
if_cfg |= VC4_SET_FIELD(VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_FORMAT_422_LEGACY,
VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422);
- vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_yuv_bt709[lim_range]);
+ vc5_hdmi_set_csc_coeffs(vc4_hdmi, csc);
break;
case VC4_HDMI_OUTPUT_RGB:
--
2.39.2
