Hi Am 07.12.22 um 17:07 schrieb Maxime Ripard:
From: Dave Stevenson <dave.steven...@raspberrypi.com>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.steven...@raspberrypi.com> Signed-off-by: Maxime Ripard <max...@cerno.tech>
Reviewed-by: Thomas Zimmermann <tzimmerm...@suse.de>
--- drivers/gpu/drm/vc4/vc4_hdmi.c | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index cb92d07680f0..cd6775429b5e 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1273,6 +1273,20 @@ static void vc5_hdmi_set_csc_coeffs_swap(struct vc4_hdmi *vc4_hdmi, HDMI_WRITE(HDMI_CSC_34_33, (coeffs[1][3] << 16) | coeffs[1][2]); }+static const u16+(*vc5_hdmi_get_yuv_csc_coeffs(struct vc4_hdmi *vc4_hdmi, u32 colorspace, bool limited))[4]
I don't like the function name here. The helper vc5_hdmi_set_csc_coeffs() programs hardware, but this similarly named helper looks up static data.
Best regards Thomas
+{ + 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) @@ -1282,6 +1296,7 @@ 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, mode) ? 0 : 1; unsigned long flags; + const u16 (*csc)[4]; u32 if_cfg = 0; u32 if_xbar = 0x543210; u32 csc_chan_ctl = 0; @@ -1296,11 +1311,16 @@ 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_get_yuv_csc_coeffs(vc4_hdmi, state->colorspace, + vc4_hdmi_is_full_range(vc4_hdmi, mode)); + + vc5_hdmi_set_csc_coeffs_swap(vc4_hdmi, csc); break;case VC4_HDMI_OUTPUT_YUV422:+ csc = vc5_hdmi_get_yuv_csc_coeffs(vc4_hdmi, state->colorspace, + vc4_hdmi_is_full_range(vc4_hdmi, mode)); + 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 | @@ -1312,7 +1332,7 @@ 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:
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
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