nouveau: change the backlight parent device to the connector, not the PCI dev

We may eventually end up with per-connector backlights, especially with
ddcci devices.  Make sure that the parent node for the backlight device is
the connector rather than the PCI device.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Sedat Dilek <sedat.dilek@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 14 insertions, 10 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index 18d7bcc..00a55df 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -88,10 +88,11 @@ static const struct backlight_ops nv50_bl_ops = {
 	.update_status = nv50_set_intensity,
 };
 
-static int nouveau_nv40_backlight_init(struct drm_device *dev)
+static int nouveau_nv40_backlight_init(struct drm_connector *connector)
 {
-	struct backlight_properties props;
+	struct drm_device *dev = connector->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct backlight_properties props;
 	struct backlight_device *bd;
 
 	if (!(nv_rd32(dev, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK))
@@ -100,7 +101,7 @@ static int nouveau_nv40_backlight_init(struct drm_device *dev)
 	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_RAW;
 	props.max_brightness = 31;
-	bd = backlight_device_register("nv_backlight", &dev->pdev->dev, dev,
+	bd = backlight_device_register("nv_backlight", &connector->kdev, dev,
 				       &nv40_bl_ops, &props);
 	if (IS_ERR(bd))
 		return PTR_ERR(bd);
@@ -112,10 +113,11 @@ static int nouveau_nv40_backlight_init(struct drm_device *dev)
 	return 0;
 }
 
-static int nouveau_nv50_backlight_init(struct drm_device *dev)
+static int nouveau_nv50_backlight_init(struct drm_connector *connector)
 {
-	struct backlight_properties props;
+	struct drm_device *dev = connector->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct backlight_properties props;
 	struct backlight_device *bd;
 
 	if (!nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT))
@@ -124,7 +126,7 @@ static int nouveau_nv50_backlight_init(struct drm_device *dev)
 	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_RAW;
 	props.max_brightness = 1025;
-	bd = backlight_device_register("nv_backlight", &dev->pdev->dev, dev,
+	bd = backlight_device_register("nv_backlight", &connector->kdev, dev,
 				       &nv50_bl_ops, &props);
 	if (IS_ERR(bd))
 		return PTR_ERR(bd);
@@ -135,8 +137,9 @@ static int nouveau_nv50_backlight_init(struct drm_device *dev)
 	return 0;
 }
 
-int nouveau_backlight_init(struct drm_device *dev)
+int nouveau_backlight_init(struct drm_connector *connector)
 {
+	struct drm_device *dev = connector->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 
 #ifdef CONFIG_ACPI
@@ -149,9 +152,9 @@ int nouveau_backlight_init(struct drm_device *dev)
 
 	switch (dev_priv->card_type) {
 	case NV_40:
-		return nouveau_nv40_backlight_init(dev);
+		return nouveau_nv40_backlight_init(connector);
 	case NV_50:
-		return nouveau_nv50_backlight_init(dev);
+		return nouveau_nv50_backlight_init(connector);
 	default:
 		break;
 	}
@@ -159,8 +162,9 @@ int nouveau_backlight_init(struct drm_device *dev)
 	return 0;
 }
 
-void nouveau_backlight_exit(struct drm_device *dev)
+void nouveau_backlight_exit(struct drm_connector *connector)
 {
+	struct drm_device *dev = connector->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 
 	if (dev_priv->backlight) {