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Subject[PATCH 4/5] nouveau: Change the backlight parent device to the connector, not the PCI dev
Date
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>
---
drivers/gpu/drm/nouveau/nouveau_backlight.c | 21 ++++++++++++---------
drivers/gpu/drm/nouveau/nouveau_connector.c | 9 +++++++++
drivers/gpu/drm/nouveau/nouveau_drv.h | 4 ++--
3 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index 9485af3..7e8a448 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -87,10 +87,11 @@ static 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))
@@ -99,7 +100,7 @@ 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);
@@ -111,10 +112,11 @@ 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))
@@ -123,7 +125,7 @@ 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);
@@ -134,15 +136,16 @@ 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;

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;
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 0871495..914058d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -106,6 +106,10 @@ nouveau_connector_destroy(struct drm_connector *drm_connector)
dev = nv_connector->base.dev;
NV_DEBUG_KMS(dev, "\n");

+ if (drm_connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
+ drm_connector->connector_type == DRM_MODE_CONNECTOR_eDP)
+ nouveau_backlight_exit(dev);
+
kfree(nv_connector->edid);
drm_sysfs_connector_remove(drm_connector);
drm_connector_cleanup(drm_connector);
@@ -894,6 +898,11 @@ nouveau_connector_create(struct drm_device *dev, int index)
nouveau_connector_set_polling(connector);

drm_sysfs_connector_add(connector);
+
+ if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
+ connector->connector_type == DRM_MODE_CONNECTOR_eDP)
+ nouveau_backlight_init(connector);
+
dcb->drm = connector;
return dcb->drm;

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 3a07e58..3c65b77 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -933,10 +933,10 @@ static inline int nouveau_acpi_edid(struct drm_device *dev, struct drm_connector

/* nouveau_backlight.c */
#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
-extern int nouveau_backlight_init(struct drm_device *);
+extern int nouveau_backlight_init(struct drm_connector *);
extern void nouveau_backlight_exit(struct drm_device *);
#else
-static inline int nouveau_backlight_init(struct drm_device *dev)
+static inline int nouveau_backlight_init(struct drm_connector *dev)
{
return 0;
}
--
1.7.3.2


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