From: Thierry Reding <treding@nvidia.com>
Date: Thu, 2 Jul 2015 15:04:06 +0000 (+0200)
Subject: drm/tegra: dc: Reset VBLANK to off
X-Git-Tag: v4.3-rc1~75^2~25^2~30
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=31930d4d0860fc87f93d9b76b0a4e6ac0b823dbf;p=karo-tx-linux.git

drm/tegra: dc: Reset VBLANK to off

Upon driver load, reset the VBLANK machinery to off to reflect the
hardware state. Since the ->reset() callback is called from the initial
drm_mode_config_reset() call, move the latter after the VBLANK machinery
initialization by drm_vblank_init().

Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index a287e4fec865..8229b3f8213a 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -1015,6 +1015,8 @@ static void tegra_crtc_reset(struct drm_crtc *crtc)
 		crtc->state = &state->base;
 		crtc->state->crtc = crtc;
 	}
+
+	drm_crtc_vblank_reset(crtc);
 }
 
 static struct drm_crtc_state *
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 2b1b09126794..2965783fd0f8 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -171,8 +171,6 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
 	if (err < 0)
 		goto fbdev;
 
-	drm_mode_config_reset(drm);
-
 	/*
 	 * We don't use the drm_irq_install() helpers provided by the DRM
 	 * core, so we need to set this manually in order to allow the
@@ -188,6 +186,8 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
 	if (err < 0)
 		goto device;
 
+	drm_mode_config_reset(drm);
+
 	err = tegra_drm_fb_init(drm);
 	if (err < 0)
 		goto vblank;