From deea06b47574de81da72a2d2fa1ace4e119ca02a Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@intel.com>
Date: Thu, 11 Jul 2019 14:35:17 -0700
Subject: drm/i915/tgl: apply Display WA #1178 to fix type C dongles
Git-commit: deea06b47574de81da72a2d2fa1ace4e119ca02a
Patch-mainline: v5.4-rc1
References: bsc#1152489
Add port C to workaround to cover Tiger Lake.
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708231629.9296-22-lucas.demarchi@intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190711213517.13674-1-lucas.demarchi@intel.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/display/intel_display_power.c | 12 +++++++++---
drivers/gpu/drm/i915/i915_reg.h | 4 +++-
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 12aa9ce08d95..d25fd5a25199 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -453,6 +453,7 @@ icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
int pw_idx = power_well->desc->hsw.idx;
enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
u32 val;
+ int wa_idx_max;
val = I915_READ(regs->driver);
I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
@@ -462,9 +463,14 @@ icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
hsw_wait_for_power_well_enable(dev_priv, power_well);
- /* Display WA #1178: icl */
- if (IS_ICELAKE(dev_priv) &&
- pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
+ /* Display WA #1178: icl, tgl */
+ if (IS_TIGERLAKE(dev_priv))
+ wa_idx_max = ICL_PW_CTL_IDX_AUX_C;
+ else
+ wa_idx_max = ICL_PW_CTL_IDX_AUX_B;
+
+ if (!IS_ELKHARTLAKE(dev_priv) &&
+ pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= wa_idx_max &&
!intel_bios_is_port_edp(dev_priv, (enum port)phy)) {
val = I915_READ(ICL_AUX_ANAOVRD1(pw_idx));
val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index ca70be40a467..ad96c5b4975c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9244,9 +9244,11 @@ enum skl_power_gate {
#define _ICL_AUX_REG_IDX(pw_idx) ((pw_idx) - ICL_PW_CTL_IDX_AUX_A)
#define _ICL_AUX_ANAOVRD1_A 0x162398
#define _ICL_AUX_ANAOVRD1_B 0x6C398
+#define _TGL_AUX_ANAOVRD1_C 0x160398
#define ICL_AUX_ANAOVRD1(pw_idx) _MMIO(_PICK(_ICL_AUX_REG_IDX(pw_idx), \
_ICL_AUX_ANAOVRD1_A, \
- _ICL_AUX_ANAOVRD1_B))
+ _ICL_AUX_ANAOVRD1_B, \
+ _TGL_AUX_ANAOVRD1_C))
#define ICL_AUX_ANAOVRD1_LDO_BYPASS (1 << 7)
#define ICL_AUX_ANAOVRD1_ENABLE (1 << 0)
--
2.28.0