drm/i915/vbt: Parse power conservation features block (551fb93d) · Commits · 戴 / test

drivers/gpu/drm/i915/display/intel_bios.c

+34 −4

Original line number	Diff line number	Diff line
		@@ -659,6 +659,7 @@ parse_driver_features(struct drm_i915_private *dev_priv,
		dev_priv->vbt.int_lvds_support = 0;
		}

		if (bdb->version < 228) {
		DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
		/*
		* If DRRS is not supported, drrs_type has to be set to 0.
		@@ -668,8 +669,36 @@ parse_driver_features(struct drm_i915_private *dev_priv,
		*/
		if (!driver->drrs_enabled)
		dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;

		dev_priv->vbt.psr.enable = driver->psr_enabled;
		}
		}

		static void
		parse_power_conservation_features(struct drm_i915_private *dev_priv,
		const struct bdb_header *bdb)
		{
		const struct bdb_lfp_power *power;
		u8 panel_type = dev_priv->vbt.panel_type;

		if (bdb->version < 228)
		return;

		power = find_section(bdb, BDB_LVDS_POWER);
		if (!power)
		return;

		dev_priv->vbt.psr.enable = power->psr & BIT(panel_type);

		/*
		* If DRRS is not supported, drrs_type has to be set to 0.
		* This is because, VBT is configured in such a way that
		* static DRRS is 0 and DRRS not supported is represented by
		* power->drrs & BIT(panel_type)=false
		*/
		if (!(power->drrs & BIT(panel_type)))
		dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
		}

		static void
		parse_edp(struct drm_i915_private dev_priv, const struct bdb_header bdb)
		@@ -1973,6 +2002,7 @@ void intel_bios_init(struct drm_i915_private *dev_priv)
		parse_lfp_backlight(dev_priv, bdb);
		parse_sdvo_panel_data(dev_priv, bdb);
		parse_driver_features(dev_priv, bdb);
		parse_power_conservation_features(dev_priv, bdb);
		parse_edp(dev_priv, bdb);
		parse_psr(dev_priv, bdb);
		parse_mipi_config(dev_priv, bdb);

drivers/gpu/drm/i915/display/intel_vbt_defs.h

+29 −0

Original line number	Diff line number	Diff line
		@@ -793,6 +793,35 @@ struct bdb_lfp_backlight_data {
		struct lfp_backlight_control_method backlight_control[16];
		} __packed;

		/*
		* Block 44 - LFP Power Conservation Features Block
		*/

		struct als_data_entry {
		u16 backlight_adjust;
		u16 lux;
		} __packed;

		struct agressiveness_profile_entry {
		u8 dpst_agressiveness : 4;
		u8 lace_agressiveness : 4;
		} __packed;

		struct bdb_lfp_power {
		u8 lfp_feature_bits;
		struct als_data_entry als[5];
		u8 lace_aggressiveness_profile;
		u16 dpst;
		u16 psr;
		u16 drrs;
		u16 lace_support;
		u16 adt;
		u16 dmrrs;
		u16 adb;
		u16 lace_enabled_status;
		struct agressiveness_profile_entry aggressivenes[16];
		} __packed;

		/*
		* Block 52 - MIPI Configuration Block
		*/

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