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drm/i915/bios: Parse the seamless DRRS min refresh rate

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Extract the seamless DRRS min refresh rate from the VBT.

v2: Do a version check

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504150440.13748-9-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2022-05-04 18:04:39 +03:00
parent cc589f2dee
commit 790b45f1bc
2 changed files with 9 additions and 1 deletions
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9
drivers/gpu/drm/i915/display/intel_bios.c
View File

@ -761,6 +761,7 @@ parse_lfp_data(struct drm_i915_private *i915)
const struct bdb_lvds_lfp_data *data;
const struct bdb_lvds_lfp_data_tail *tail;
const struct bdb_lvds_lfp_data_ptrs *ptrs;
int panel_type = i915->vbt.panel_type;
ptrs = find_section(i915, BDB_LVDS_LFP_DATA_PTRS);
if (!ptrs)
@ -777,7 +778,13 @@ parse_lfp_data(struct drm_i915_private *i915)
if (!tail)
return;
(void)tail;
if (i915->vbt.version >= 188) {
i915->vbt.seamless_drrs_min_refresh_rate =
tail->seamless_drrs_min_refresh_rate[panel_type];
drm_dbg_kms(&i915->drm,
"Seamless DRRS min refresh rate: %d Hz\n",
i915->vbt.seamless_drrs_min_refresh_rate);
}
}
static void

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

@ -326,6 +326,7 @@ struct intel_vbt_data {
bool override_afc_startup;
u8 override_afc_startup_val;
u8 seamless_drrs_min_refresh_rate;
enum drrs_type drrs_type;
struct {