From ab68eb94acdf1f74ec986ac1dbb440602a34e758 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 26 Jul 2012 13:38:52 -0400
Subject: [PATCH] --- yaml --- r: 321626 b: refs/heads/master c:
 6c0ae2ab85fc4a95cae82047a7db1f688a7737ab h: refs/heads/master v: v3

---
 [refs]                                            |  2 +-
 trunk/drivers/gpu/drm/radeon/atombios_crtc.c      | 14 ++++++++++++--
 trunk/drivers/gpu/drm/radeon/radeon_legacy_crtc.c |  4 ++++
 trunk/drivers/gpu/drm/radeon/radeon_mode.h        |  1 +
 4 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index b7587c5032a6..662cc419f8b7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3838f46e363d5a07e61d0352bf11d534dc61f921
+refs/heads/master: 6c0ae2ab85fc4a95cae82047a7db1f688a7737ab
diff --git a/trunk/drivers/gpu/drm/radeon/atombios_crtc.c b/trunk/drivers/gpu/drm/radeon/atombios_crtc.c
index 9e6f76fec527..dc279ebf7afb 100644
--- a/trunk/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/trunk/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -259,7 +259,7 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
 		/* adjust pm to dpms changes BEFORE enabling crtcs */
 		radeon_pm_compute_clocks(rdev);
 		/* disable crtc pair power gating before programming */
-		if (ASIC_IS_DCE6(rdev))
+		if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set)
 			atombios_powergate_crtc(crtc, ATOM_DISABLE);
 		atombios_enable_crtc(crtc, ATOM_ENABLE);
 		if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
@@ -279,7 +279,7 @@ void atombios_crtc_dpms(struct drm_crtc *crtc, int mode)
 		atombios_enable_crtc(crtc, ATOM_DISABLE);
 		radeon_crtc->enabled = false;
 		/* power gating is per-pair */
-		if (ASIC_IS_DCE6(rdev)) {
+		if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set) {
 			struct drm_crtc *other_crtc;
 			struct radeon_crtc *other_radeon_crtc;
 			list_for_each_entry(other_crtc, &rdev->ddev->mode_config.crtc_list, head) {
@@ -1635,18 +1635,28 @@ static bool atombios_crtc_mode_fixup(struct drm_crtc *crtc,
 static void atombios_crtc_prepare(struct drm_crtc *crtc)
 {
 	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+	struct drm_device *dev = crtc->dev;
+	struct radeon_device *rdev = dev->dev_private;
 
+	radeon_crtc->in_mode_set = true;
 	/* pick pll */
 	radeon_crtc->pll_id = radeon_atom_pick_pll(crtc);
 
+	/* disable crtc pair power gating before programming */
+	if (ASIC_IS_DCE6(rdev))
+		atombios_powergate_crtc(crtc, ATOM_DISABLE);
+
 	atombios_lock_crtc(crtc, ATOM_ENABLE);
 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
 }
 
 static void atombios_crtc_commit(struct drm_crtc *crtc)
 {
+	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+
 	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
 	atombios_lock_crtc(crtc, ATOM_DISABLE);
+	radeon_crtc->in_mode_set = false;
 }
 
 static void atombios_crtc_disable(struct drm_crtc *crtc)
diff --git a/trunk/drivers/gpu/drm/radeon/radeon_legacy_crtc.c b/trunk/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
index d5fd615897ec..94b4a1c12893 100644
--- a/trunk/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
+++ b/trunk/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
@@ -1025,9 +1025,11 @@ static int radeon_crtc_mode_set(struct drm_crtc *crtc,
 
 static void radeon_crtc_prepare(struct drm_crtc *crtc)
 {
+	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
 	struct drm_crtc *crtci;
 
+	radeon_crtc->in_mode_set = true;
 	/*
 	* The hardware wedges sometimes if you reconfigure one CRTC
 	* whilst another is running (see fdo bug #24611).
@@ -1038,6 +1040,7 @@ static void radeon_crtc_prepare(struct drm_crtc *crtc)
 
 static void radeon_crtc_commit(struct drm_crtc *crtc)
 {
+	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
 	struct drm_crtc *crtci;
 
@@ -1048,6 +1051,7 @@ static void radeon_crtc_commit(struct drm_crtc *crtc)
 		if (crtci->enabled)
 			radeon_crtc_dpms(crtci, DRM_MODE_DPMS_ON);
 	}
+	radeon_crtc->in_mode_set = false;
 }
 
 static const struct drm_crtc_helper_funcs legacy_helper_funcs = {
diff --git a/trunk/drivers/gpu/drm/radeon/radeon_mode.h b/trunk/drivers/gpu/drm/radeon/radeon_mode.h
index f380d59c5763..d56978949f34 100644
--- a/trunk/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/trunk/drivers/gpu/drm/radeon/radeon_mode.h
@@ -275,6 +275,7 @@ struct radeon_crtc {
 	u16 lut_r[256], lut_g[256], lut_b[256];
 	bool enabled;
 	bool can_tile;
+	bool in_mode_set;
 	uint32_t crtc_offset;
 	struct drm_gem_object *cursor_bo;
 	uint64_t cursor_addr;