drm/i915/bios: Parse HOBL parameter (f615cb6a) · Commits · 戴 / test

HOBL means hours of battery life, it is a power-saving feature were supported motherboards can use a special voltage swing table that uses less power. So here parsing the VBT to check if this feature is supported. BSpec: 20150 Reviewed-by:

Anusha Srivatsa <anusha.srivatsa@intel.com> Signed-off-by:

José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200708205512.21625-3-jose.souza@intel.com

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

+3 −0

Original line number	Diff line number	Diff line
		@@ -722,6 +722,9 @@ parse_power_conservation_features(struct drm_i915_private *dev_priv,
		*/
		if (!(power->drrs & BIT(panel_type)))
		dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;

		if (bdb->version >= 232)
		dev_priv->vbt.edp.hobl = power->hobl & BIT(panel_type);
		}

		static void

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

+1 −0

Original line number	Diff line number	Diff line
		@@ -820,6 +820,7 @@ struct bdb_lfp_power {
		u16 adb;
		u16 lace_enabled_status;
		struct agressiveness_profile_entry aggressivenes[16];
		u16 hobl; /* 232+ */
		} __packed;

		/*

drivers/gpu/drm/i915/i915_drv.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -692,6 +692,7 @@ struct intel_vbt_data {
		bool initialized;
		int bpp;
		struct edp_power_seq pps;
		bool hobl;
		} edp;

		struct {

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