From 1eaa6eedb8cf602476d3bf602e090fb26cbfaf1e Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Mon, 6 Mar 2023 11:46:48 +0100 Subject: [PATCH] drm/vc4: hdmi: Add a function to retrieve the CSC matrix 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 Reviewed-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20221207-rpi-hdmi-improvements-v3-7-bdd54f66884e@cerno.tech Signed-off-by: Maxime Ripard --- 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 97ac87ac5776..5c1c13025a93 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1302,6 +1302,20 @@ 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) @@ -1311,6 +1325,7 @@ 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; @@ -1325,11 +1340,14 @@ 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 | @@ -1341,7 +1359,7 @@ 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: -- 2.50.1