linux-kernel - [PATCH 5.0 110/146] drm/i915/icl: Fix the TRANS_DDI_FUNC

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Date:   Mon,  1 Apr 2019 19:02:02 +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, Madhav Chauhan <madhav.chauhan@...el.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Manasi Navare <manasi.d.navare@...el.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>
Subject: [PATCH 5.0 110/146] drm/i915/icl: Fix the TRANS_DDI_FUNC_CTL2 bitfield macro

5.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Manasi Navare <manasi.d.navare@...el.com>

commit 69903dfae0310afe8a15f5cd4e376ebb7c6da1d2 upstream.

This patch fixes the PORT_SYNC_MODE_MASTER_SELECT macro
to correctly do the left shifting to set the port sync
master select correctly.
I have tested this fix on ICL.

Fixes: 49edbd49786e ("drm/i915/icl: Define TRANS_DDI_FUNC_CTL DSI registers")
Cc: Madhav Chauhan <madhav.chauhan@...el.com>
Cc: Jani Nikula <jani.nikula@...el.com>
Cc: <stable@...r.kernel.org> # v5.0+
Signed-off-by: Manasi Navare <manasi.d.navare@...el.com>
Reviewed-by: Jani Nikula <jani.nikula@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190319221847.21311-1-manasi.d.navare@intel.com
(cherry picked from commit 7264aebb81d15aa6bbed650c816bba90f026bc35)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/i915/i915_reg.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9205,7 +9205,7 @@ enum skl_power_gate {
 #define TRANS_DDI_FUNC_CTL2(tran)	_MMIO_TRANS2(tran, \
 						     _TRANS_DDI_FUNC_CTL2_A)
 #define  PORT_SYNC_MODE_ENABLE			(1 << 4)
-#define  PORT_SYNC_MODE_MASTER_SELECT(x)	((x) < 0)
+#define  PORT_SYNC_MODE_MASTER_SELECT(x)	((x) << 0)
 #define  PORT_SYNC_MODE_MASTER_SELECT_MASK	(0x7 << 0)
 #define  PORT_SYNC_MODE_MASTER_SELECT_SHIFT	0