PATCHES/patches/stable-drm-i915-disable-dc-states-around-gmbus-on-glk.patch

From 3488d0237f6364614f0c59d6d784bb79b11eeb92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Fri, 8 Dec 2017 23:37:36 +0200
Subject: drm/i915: Disable DC states around GMBUS on GLK
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

commit 3488d0237f6364614f0c59d6d784bb79b11eeb92 upstream.

Prevent the DMC from destroying GMBUS transfers on GLK. GMBUS
lives in PG1 so DC off is all we need.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171208213739.16388-1-ville.syrjala@linux.intel.com
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
(cherry picked from commit 156961ae7bdf6feb72778e8da83d321b273343fd)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/i915/intel_runtime_pm.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -1786,6 +1786,7 @@ void intel_display_power_put(struct drm_
        GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS |         \
        BIT_ULL(POWER_DOMAIN_MODESET) |                 \
        BIT_ULL(POWER_DOMAIN_AUX_A) |                   \
+       BIT_ULL(POWER_DOMAIN_GMBUS) |                   \
        BIT_ULL(POWER_DOMAIN_INIT))
 
 #define CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS (                \
1	From 3488d0237f6364614f0c59d6d784bb79b11eeb92 Mon Sep 17 00:00:00 2001
2	From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
3	Date: Fri, 8 Dec 2017 23:37:36 +0200
4	Subject: drm/i915: Disable DC states around GMBUS on GLK
5	MIME-Version: 1.0
6	Content-Type: text/plain; charset=UTF-8
7	Content-Transfer-Encoding: 8bit
8
9	From: Ville Syrjälä <ville.syrjala@linux.intel.com>
10
11	commit 3488d0237f6364614f0c59d6d784bb79b11eeb92 upstream.
12
13	Prevent the DMC from destroying GMBUS transfers on GLK. GMBUS
14	lives in PG1 so DC off is all we need.
15
16	Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
17	Link: https://patchwork.freedesktop.org/patch/msgid/20171208213739.16388-1-ville.syrjala@linux.intel.com
18	Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
19	(cherry picked from commit 156961ae7bdf6feb72778e8da83d321b273343fd)
20	Signed-off-by: Jani Nikula <jani.nikula@intel.com>
21	Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
22
23	---
24	drivers/gpu/drm/i915/intel_runtime_pm.c \| 1 +
25	1 file changed, 1 insertion(+)
26
27	--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
28	+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
29	@@ -1786,6 +1786,7 @@ void intel_display_power_put(struct drm_
30	GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS \| \
31	BIT_ULL(POWER_DOMAIN_MODESET) \| \
32	BIT_ULL(POWER_DOMAIN_AUX_A) \| \
33	+ BIT_ULL(POWER_DOMAIN_GMBUS) \| \
34	BIT_ULL(POWER_DOMAIN_INIT))
35
36	#define CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \