From e77c23fcc5c2e799d87497d38492d5d1793955ed Mon Sep 17 00:00:00 2001
From: Chuansheng Liu <chuansheng.liu@intel.com>
Date: Fri, 11 Feb 2022 08:29:33 +0800
Subject: drm/i915/dg1: Update DMC_DEBUG3 register
Git-commit: b60668cb4c57a7cc451de781ae49f5e9cc375eaf
Patch-mainline: v5.18-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
Current DMC_DEBUG3(_MMIO(0x101090)) address is for TGL,
it is wrong for DG1. Just like commit 5bcc95ca382e
("drm/i915/dg1: Update DMC_DEBUG register"), correct
this issue for DG1 platform to avoid wrong register
being read.
BSpec: 49788
v2: fix "not wrong" typo. (Jani)
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220211002933.84240-1-chuansheng.liu@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_display_debugfs.c | 4 ++--
drivers/gpu/drm/i915/i915_reg.h | 3 ++-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index f4de004d470f..f6c4ad8fce19 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -474,8 +474,8 @@ static int i915_dmc_info(struct seq_file *m, void *unused)
* reg for DC3CO debugging and validation,
* but TGL DMC f/w is using DMC_DEBUG3 reg for DC3CO counter.
*/
- seq_printf(m, "DC3CO count: %d\n",
- intel_de_read(dev_priv, DMC_DEBUG3));
+ seq_printf(m, "DC3CO count: %d\n", intel_de_read(dev_priv, IS_DGFX(dev_priv) ?
+ DG1_DMC_DEBUG3 : TGL_DMC_DEBUG3));
} else {
dc5_reg = IS_BROXTON(dev_priv) ? BXT_DMC_DC3_DC5_COUNT :
SKL_DMC_DC3_DC5_COUNT;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 50d21b9facfb..c8b06f711a83 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5633,7 +5633,8 @@
#define TGL_DMC_DEBUG_DC6_COUNT _MMIO(0x101088)
#define DG1_DMC_DEBUG_DC5_COUNT _MMIO(0x134154)
-#define DMC_DEBUG3 _MMIO(0x101090)
+#define TGL_DMC_DEBUG3 _MMIO(0x101090)
+#define DG1_DMC_DEBUG3 _MMIO(0x13415c)
/* Display Internal Timeout Register */
#define RM_TIMEOUT _MMIO(0x42060)
--
2.38.1