diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch b/target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch new file mode 100644 index 0000000000..819e983e6e --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch @@ -0,0 +1,222 @@ +From b6cf78ca0773f54074da8dc3401b9f52aec2e27e Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Wed, 8 Apr 2020 16:12:02 +0100 +Subject: [PATCH] drm/vc4_hdmi: Add Broadcast RGB property to allow + override of RGB range + +Copy Intel's "Broadcast RGB" property semantics to add manual override +of the HDMI pixel range for monitors that don't abide by the content +of the AVI Infoframe. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/gpu/drm/vc4/vc4_hdmi.c | 103 +++++++++++++++++++++++++++++++++ + drivers/gpu/drm/vc4/vc4_hdmi.h | 15 +++++ + 2 files changed, 118 insertions(+) + +--- a/drivers/gpu/drm/vc4/vc4_hdmi.c ++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c +@@ -56,6 +56,14 @@ + #include "vc4_hdmi_regs.h" + #include "vc4_regs.h" + ++/* ++ * "Broadcast RGB" property. ++ * Allows overriding of HDMI full or limited range RGB ++ */ ++#define VC4_BROADCAST_RGB_AUTO 0 ++#define VC4_BROADCAST_RGB_FULL 1 ++#define VC4_BROADCAST_RGB_LIMITED 2 ++ + #define VC5_HDMI_HORZA_HFP_SHIFT 16 + #define VC5_HDMI_HORZA_HFP_MASK VC4_MASK(28, 16) + #define VC5_HDMI_HORZA_VPOS BIT(15) +@@ -135,6 +143,10 @@ static bool vc4_hdmi_is_full_range_rgb(s + { + struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder; + ++ if (vc4_hdmi->broadcast_rgb == VC4_BROADCAST_RGB_LIMITED) ++ return false; ++ else if (vc4_hdmi->broadcast_rgb == VC4_BROADCAST_RGB_FULL) ++ return true; + return !vc4_encoder->hdmi_monitor || + drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL; + } +@@ -341,6 +353,65 @@ static int vc4_hdmi_connector_atomic_che + return 0; + } + ++/** ++ * vc4_hdmi_connector_atomic_get_property - hook for ++ * connector->atomic_get_property. ++ * @connector: Connector to get the property for. ++ * @state: Connector state to retrieve the property from. ++ * @property: Property to retrieve. ++ * @val: Return value for the property. ++ * ++ * Returns the atomic property value for a digital connector. ++ */ ++int vc4_hdmi_connector_get_property(struct drm_connector *connector, ++ const struct drm_connector_state *state, ++ struct drm_property *property, ++ uint64_t *val) ++{ ++ struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); ++ const struct vc4_hdmi_connector_state *vc4_conn_state = ++ const_conn_state_to_vc4_hdmi_conn_state(state); ++ ++ if (property == vc4_hdmi->broadcast_rgb_property) { ++ *val = vc4_conn_state->broadcast_rgb; ++ } else { ++ DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n", ++ property->base.id, property->name); ++ return -EINVAL; ++ } ++ ++ return 0; ++} ++ ++/** ++ * vc4_hdmi_connector_atomic_set_property - hook for ++ * connector->atomic_set_property. ++ * @connector: Connector to set the property for. ++ * @state: Connector state to set the property on. ++ * @property: Property to set. ++ * @val: New value for the property. ++ * ++ * Sets the atomic property value for a digital connector. ++ */ ++int vc4_hdmi_connector_set_property(struct drm_connector *connector, ++ struct drm_connector_state *state, ++ struct drm_property *property, ++ uint64_t val) ++{ ++ struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); ++ struct vc4_hdmi_connector_state *vc4_conn_state = ++ conn_state_to_vc4_hdmi_conn_state(state); ++ ++ if (property == vc4_hdmi->broadcast_rgb_property) { ++ vc4_conn_state->broadcast_rgb = val; ++ return 0; ++ } ++ ++ DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n", ++ property->base.id, property->name); ++ return -EINVAL; ++} ++ + static void vc4_hdmi_connector_reset(struct drm_connector *connector) + { + struct vc4_hdmi_connector_state *old_state = +@@ -377,6 +448,7 @@ vc4_hdmi_connector_duplicate_state(struc + new_state->pixel_rate = vc4_state->pixel_rate; + new_state->output_bpc = vc4_state->output_bpc; + new_state->output_format = vc4_state->output_format; ++ new_state->broadcast_rgb = vc4_state->broadcast_rgb; + __drm_atomic_helper_connector_duplicate_state(connector, &new_state->base); + + return &new_state->base; +@@ -389,6 +461,8 @@ static const struct drm_connector_funcs + .reset = vc4_hdmi_connector_reset, + .atomic_duplicate_state = vc4_hdmi_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, ++ .atomic_get_property = vc4_hdmi_connector_get_property, ++ .atomic_set_property = vc4_hdmi_connector_set_property, + }; + + static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = { +@@ -396,6 +470,32 @@ static const struct drm_connector_helper + .atomic_check = vc4_hdmi_connector_atomic_check, + }; + ++static const struct drm_prop_enum_list broadcast_rgb_names[] = { ++ { VC4_BROADCAST_RGB_AUTO, "Automatic" }, ++ { VC4_BROADCAST_RGB_FULL, "Full" }, ++ { VC4_BROADCAST_RGB_LIMITED, "Limited 16:235" }, ++}; ++ ++static void ++vc4_hdmi_attach_broadcast_rgb_property(struct drm_device *dev, ++ struct vc4_hdmi *vc4_hdmi) ++{ ++ struct drm_property *prop = vc4_hdmi->broadcast_rgb_property; ++ ++ if (!prop) { ++ prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, ++ "Broadcast RGB", ++ broadcast_rgb_names, ++ ARRAY_SIZE(broadcast_rgb_names)); ++ if (!prop) ++ return; ++ ++ vc4_hdmi->broadcast_rgb_property = prop; ++ } ++ ++ drm_object_attach_property(&vc4_hdmi->connector.base, prop, 0); ++} ++ + static int vc4_hdmi_connector_init(struct drm_device *dev, + struct vc4_hdmi *vc4_hdmi) + { +@@ -439,6 +539,8 @@ static int vc4_hdmi_connector_init(struc + if (vc4_hdmi->variant->supports_hdr) + drm_connector_attach_hdr_output_metadata_property(connector); + ++ vc4_hdmi_attach_broadcast_rgb_property(dev, vc4_hdmi); ++ + drm_connector_attach_encoder(connector, encoder); + + return 0; +@@ -1384,6 +1486,7 @@ static void vc4_hdmi_encoder_atomic_mode + mutex_lock(&vc4_hdmi->mutex); + vc4_hdmi->output_bpc = vc4_state->output_bpc; + vc4_hdmi->output_format = vc4_state->output_format; ++ vc4_hdmi->broadcast_rgb = vc4_state->broadcast_rgb; + memcpy(&vc4_hdmi->saved_adjusted_mode, + &crtc_state->adjusted_mode, + sizeof(vc4_hdmi->saved_adjusted_mode)); +--- a/drivers/gpu/drm/vc4/vc4_hdmi.h ++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h +@@ -140,6 +140,8 @@ struct vc4_hdmi { + + struct delayed_work scrambling_work; + ++ struct drm_property *broadcast_rgb_property; ++ + struct i2c_adapter *ddc; + void __iomem *hdmicore_regs; + void __iomem *hd_regs; +@@ -240,6 +242,12 @@ struct vc4_hdmi { + */ + enum vc4_hdmi_output_format output_format; + ++ /** ++ * @broadcast_rgb: Copy of @vc4_connector_state.broadcast_rgb ++ * for use outside of KMS hooks. Protected by @mutex. ++ */ ++ int broadcast_rgb; ++ + /* VC5 debugfs regset */ + struct debugfs_regset32 cec_regset; + struct debugfs_regset32 csc_regset; +@@ -268,6 +276,7 @@ struct vc4_hdmi_connector_state { + unsigned long long pixel_rate; + unsigned int output_bpc; + enum vc4_hdmi_output_format output_format; ++ int broadcast_rgb; + }; + + static inline struct vc4_hdmi_connector_state * +@@ -275,6 +284,12 @@ conn_state_to_vc4_hdmi_conn_state(struct + { + return container_of(conn_state, struct vc4_hdmi_connector_state, base); + } ++ ++static inline const struct vc4_hdmi_connector_state * ++const_conn_state_to_vc4_hdmi_conn_state(const struct drm_connector_state *conn_state) ++{ ++ return container_of(conn_state, struct vc4_hdmi_connector_state, base); ++} + + void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, + struct vc4_hdmi_connector_state *vc4_conn_state); |