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
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_bios.c | 3 +++
drivers/gpu/drm/i915/display/intel_vbt_defs.h | 1 +
drivers/gpu/drm/i915/i915_drv.h | 1 +
3 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 6593e2c38043..c53c85d38fa5 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -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
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index aef7fe932d1a..6faabd4f6d49 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -820,6 +820,7 @@ struct bdb_lfp_power {
u16 adb;
u16 lace_enabled_status;
struct agressiveness_profile_entry aggressivenes[16];
+ u16 hobl; /* 232+ */
} __packed;
/*
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9aad3ec979bd..16692c94351a 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -690,6 +690,7 @@ struct intel_vbt_data {
bool initialized;
int bpp;
struct edp_power_seq pps;
+ bool hobl;
} edp;
struct {
--
2.27.0
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