linux-kernel - [PATCH 5.4 30/50] drm/i915: Extend WaDisableDARBFClkGating to icl,ehl,tgl

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Message-Id: <20200508123047.472455641@linuxfoundation.org>
Date:   Fri,  8 May 2020 14:35:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, stable@...nel.vger.org,
        Lucas De Marchi <lucas.demarchi@...el.com>,
        Matt Atwood <matthew.s.atwood@...el.com>,
        Radhakrishna Sripada <radhakrishna.sripada@...el.com>,
        Matt Roper <matthew.d.roper@...el.com>
Subject: [PATCH 5.4 30/50] drm/i915: Extend WaDisableDARBFClkGating to icl,ehl,tgl

From: Matt Roper <matthew.d.roper@...el.com>

commit 1e1a139d62d1c11e3083c8638d31a9744bec3918 upstream.

WaDisableDARBFClkGating, now known as Wa_14010480278, has been added to
the workaround tables for ICL, EHL, and TGL so we need to extend our
platform test accordingly.

Bspec: 33450
Bspec: 33451
Bspec: 52890
Cc: stable@...nel.vger.org
Cc: Lucas De Marchi <lucas.demarchi@...el.com>
Cc: Matt Atwood <matthew.s.atwood@...el.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada@...el.com>
Signed-off-by: Matt Roper <matthew.d.roper@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224012026.3157766-2-matthew.d.roper@intel.com
Reviewed-by: Lucas De Marchi <lucas.demarchi@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/i915/display/intel_display.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -16860,8 +16860,11 @@ get_encoder_power_domains(struct drm_i91
 
 static void intel_early_display_was(struct drm_i915_private *dev_priv)
 {
-	/* Display WA #1185 WaDisableDARBFClkGating:cnl,glk */
-	if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
+	/*
+	 * Display WA #1185 WaDisableDARBFClkGating:cnl,glk,icl,ehl,tgl
+	 * Also known as Wa_14010480278.
+	 */
+	if (IS_GEN_RANGE(dev_priv, 10, 12) || IS_GEMINILAKE(dev_priv))
 		I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) |
 			   DARBF_GATING_DIS);