From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
VBT hsa a field for the MSA timing delay, which supposedly
should be used with DRRS. Extract the data from the VBT.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_bios.c | 3 +++
drivers/gpu/drm/i915/i915_drv.h | 5 +++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index a559a1914588..93dc32fb3e40 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -888,6 +888,9 @@ parse_edp(struct drm_i915_private *i915, const struct bdb_header *bdb)
i915->vbt.edp.low_vswing = vswing == 0;
}
}
+
+ i915->vbt.edp.drrs_msa_timing_delay =
+ (edp->sdrrs_msa_timing_delay >> (panel_type * 2)) & 3;
}
static void
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 943267393ecb..020c5f7602a2 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -356,10 +356,11 @@ struct intel_vbt_data {
int lanes;
int preemphasis;
int vswing;
- bool low_vswing;
- bool initialized;
int bpp;
struct edp_power_seq pps;
+ u8 drrs_msa_timing_delay;
+ bool low_vswing;
+ bool initialized;
bool hobl;
} edp;
--
2.34.1
