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From: Jani Nikula <jani.nikula@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: Jani Nikula <jani.nikula@intel.com>,
	Paulo Zanoni <paulo.r.zanoni@intel.com>
Subject: [PATCH] drm/i915/icl: do not save DDI A/E sharing bit for ICL
Date: Tue,  6 Mar 2018 12:41:55 +0200	[thread overview]
Message-ID: <20180306104155.3526-1-jani.nikula@intel.com> (raw)

We don't want to preserve the DDI A 4 lane bit on ICL.

Fixes: 3d2011cfa41f ("drm/i915/icl: remove port A/E lane sharing limitation.")
Cc: Mahesh Kumar <mahesh1.kumar@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index bfdaa5d86861..66417dd24bfc 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2932,9 +2932,12 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 	intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
 	intel_encoder->cloneable = 0;
 
-	intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
-					  (DDI_BUF_PORT_REVERSAL |
-					   DDI_A_4_LANES);
+	if (INTEL_GEN(dev_priv) >= 11)
+		intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
+			DDI_BUF_PORT_REVERSAL;
+	else
+		intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) &
+			(DDI_BUF_PORT_REVERSAL | DDI_A_4_LANES);
 	intel_dig_port->dp.output_reg = INVALID_MMIO_REG;
 	intel_dig_port->max_lanes = intel_ddi_max_lanes(intel_dig_port);
 
-- 
2.11.0

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             reply	other threads:[~2018-03-06 10:41 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-06 10:41 Jani Nikula [this message]
2018-03-06 11:03 ` ✓ Fi.CI.BAT: success for drm/i915/icl: do not save DDI A/E sharing bit for ICL Patchwork
2018-03-06 12:08 ` [PATCH] " Ville Syrjälä
2018-03-09 10:31   ` Jani Nikula
2018-03-06 14:42 ` Paulo Zanoni
2018-03-07  7:50   ` Jani Nikula
2018-03-06 14:47 ` ✗ Fi.CI.IGT: warning for " Patchwork

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