Since VBT 228 is from this block that PSR and other power saving
features configuration should be read from.
This new block have a DRRS field but block 40 is not obsolete and
it have information about what DRRS mode is supported so not using
the information on this new block.
v2:
Added information about why DRRS is not used from this new block
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_bios.c | 19 +++++++++++-
drivers/gpu/drm/i915/display/intel_vbt_defs.h | 29 +++++++++++++++++++
2 files changed, 47 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index f6a9a5ccb556..28f12f06a99d 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -668,7 +668,23 @@ 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;
+ if (bdb->version < 228)
+ 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;
+
+ power = find_section(bdb, BDB_LVDS_POWER);
+ if (!power)
+ return;
+
+ if (bdb->version >= 228)
+ dev_priv->vbt.psr.enable = power->psr & (1 << panel_type);
}
static void
@@ -1973,6 +1989,7 @@ 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);
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index f0338da3a82a..98b71dc32d2a 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -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
*/
--
2.24.0
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