27c9d80f51
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90 lines
2.5 KiB
Diff
90 lines
2.5 KiB
Diff
From cc3ef6d787b21aca724056515ba0af0199e94946 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Fri, 16 Feb 2024 15:33:14 +0000
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Subject: [PATCH 0924/1085] drm/vc4: Add monochrome mode to the VEC.
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The VEC supports not producing colour bursts for monochrome output.
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It also has an option for disabling the chroma input to remove
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chroma from the signal.
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Now that there is a DRM_MODE_TV_MODE_xx defined for monochrome,
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plumb this in.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_vec.c | 28 +++++++++++++++++++++++++++-
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1 file changed, 27 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_vec.c
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+++ b/drivers/gpu/drm/vc4/vc4_vec.c
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@@ -236,6 +236,7 @@ enum vc4_vec_tv_mode_id {
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VC4_VEC_TV_MODE_PAL_60,
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VC4_VEC_TV_MODE_PAL_N,
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VC4_VEC_TV_MODE_SECAM,
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+ VC4_VEC_TV_MODE_MONOCHROME,
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};
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struct vc4_vec_tv_mode {
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@@ -338,6 +339,22 @@ static const struct vc4_vec_tv_mode vc4_
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.config1 = VEC_CONFIG1_C_CVBS_CVBS,
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.custom_freq = 0x29c71c72,
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},
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+ {
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+ /* 50Hz mono */
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+ .mode = DRM_MODE_TV_MODE_MONOCHROME,
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+ .expected_htotal = 864,
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+ .config0 = VEC_CONFIG0_PAL_BDGHI_STD | VEC_CONFIG0_BURDIS |
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+ VEC_CONFIG0_CHRDIS,
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+ .config1 = VEC_CONFIG1_C_CVBS_CVBS,
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+ },
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+ {
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+ /* 60Hz mono */
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+ .mode = DRM_MODE_TV_MODE_MONOCHROME,
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+ .expected_htotal = 858,
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+ .config0 = VEC_CONFIG0_PAL_M_STD | VEC_CONFIG0_BURDIS |
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+ VEC_CONFIG0_CHRDIS,
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+ .config1 = VEC_CONFIG1_C_CVBS_CVBS,
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+ },
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};
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static inline const struct vc4_vec_tv_mode *
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@@ -365,6 +382,7 @@ static const struct drm_prop_enum_list l
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{ VC4_VEC_TV_MODE_PAL_M, "PAL-M", },
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{ VC4_VEC_TV_MODE_PAL_N, "PAL-N", },
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{ VC4_VEC_TV_MODE_SECAM, "SECAM", },
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+ { VC4_VEC_TV_MODE_MONOCHROME, "Mono", },
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};
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enum drm_connector_tv_mode
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@@ -449,6 +467,10 @@ vc4_vec_connector_set_property(struct dr
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state->tv.mode = DRM_MODE_TV_MODE_SECAM;
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break;
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+ case VC4_VEC_TV_MODE_MONOCHROME:
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+ state->tv.mode = DRM_MODE_TV_MODE_MONOCHROME;
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+ break;
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+
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default:
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return -EINVAL;
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}
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@@ -481,6 +503,9 @@ vc4_vec_generic_tv_mode_to_legacy(enum d
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case DRM_MODE_TV_MODE_SECAM:
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return VC4_VEC_TV_MODE_SECAM;
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+ case DRM_MODE_TV_MODE_MONOCHROME:
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+ return VC4_VEC_TV_MODE_MONOCHROME;
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+
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default:
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return -EINVAL;
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}
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@@ -835,7 +860,8 @@ static int vc4_vec_bind(struct device *d
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BIT(DRM_MODE_TV_MODE_PAL) |
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BIT(DRM_MODE_TV_MODE_PAL_M) |
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BIT(DRM_MODE_TV_MODE_PAL_N) |
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- BIT(DRM_MODE_TV_MODE_SECAM));
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+ BIT(DRM_MODE_TV_MODE_SECAM) |
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+ BIT(DRM_MODE_TV_MODE_MONOCHROME));
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if (ret)
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return ret;
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