From c17c0571e6b60795524704a7010bc1cf2e26f4ae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Wed, 4 May 2022 18:04:39 +0300
Subject: drm/i915/bios: Parse the seamless DRRS min refresh rate
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Git-commit: 790b45f1bc6736a8dd48ba5731b6871e0217311e
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
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
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_bios.c | 9 ++++++++-
drivers/gpu/drm/i915/i915_drv.h | 1 +
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 8a04cb4c1c3d..54266aa4f0f9 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -762,6 +762,7 @@ 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)
@@ -778,7 +779,13 @@ 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
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 2dddc27a1b0e..00d7eeae33bd 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -327,6 +327,7 @@ 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 {
--
2.38.1