linux-kernel - [PATCH 5.7 450/477] drm/i915/tc: fix the reset of ln0

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Date:   Tue, 23 Jun 2020 21:57:27 +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,
        Khaled Almahallawy <khaled.almahallawy@...el.com>,
        José Roberto de Souza <jose.souza@...el.com>,
        Imre Deak <imre.deak@...el.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Subject: [PATCH 5.7 450/477] drm/i915/tc: fix the reset of ln0

From: Khaled Almahallawy <khaled.almahallawy@...el.com>

commit a43555ac908c604f45ed98628805aec9355b9737 upstream.

Setting ln0 similar to ln1

Fixes: 3b51be4e4061b ("drm/i915/tc: Update DP_MODE programming")
Cc: <stable@...r.kernel.org> # v5.5+
Signed-off-by: Khaled Almahallawy <khaled.almahallawy@...el.com>
Reviewed-by: José Roberto de Souza <jose.souza@...el.com>
Signed-off-by: Imre Deak <imre.deak@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200608204537.28468-1-khaled.almahallawy@intel.com
(cherry picked from commit 4f72a8ee819d57d7329d88f487a2fc9b45153177)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/i915/display/intel_ddi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2866,7 +2866,7 @@ icl_program_mg_dp_mode(struct intel_digi
 		ln1 = intel_de_read(dev_priv, MG_DP_MODE(1, tc_port));
 	}
 
-	ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X1_MODE);
+	ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
 	ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
 
 	/* DPPATC */