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drm/i915/bios: Parse HOBL parameter 

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
This commit is contained in:
José Roberto de Souza 2020-07-08 13:55:10 -07:00
parent f0e86e0520
commit f615cb6a8a
3 changed files with 5 additions and 0 deletions
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3
drivers/gpu/drm/i915/display/intel_bios.c
View File

@ -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

1
drivers/gpu/drm/i915/display/intel_vbt_defs.h
View File

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

1
drivers/gpu/drm/i915/i915_drv.h
View File

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