On Tue, Nov 05, 2019 at 05:45:04PM -0800, José Roberto de Souza wrote:
> Since VBT 228 is from this block that PSR and other power saving
> features configuration should be read from.
>
> 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 a03f56b7b4ef..bf79e9858bd8 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.c
> +++ b/drivers/gpu/drm/i915/display/intel_bios.c
> @@ -561,7 +561,23 @@ 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);
Should we also be setting dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED
if block 44 tells us it isn't valid on this panel?
Matt
> }
>
> static void
> @@ -1878,6 +1894,7 @@ 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 69a7cb1fa121..31f47ce56587 100644
> --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
> @@ -792,6 +792,35 @@ 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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--
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation
(916) 356-2795
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