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SubjectRe: [PATCH 4/5] nouveau: Change the backlight parent device to the connector, not the PCI dev
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On Fri, 2011-01-14 at 14:24 -0500, Matthew Garrett wrote:
> 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>
Acked-by: Ben Skeggs <bskeggs@redhat.com>

> ---
> drivers/gpu/drm/nouveau/nouveau_backlight.c | 24 ++++++++++++++----------
> drivers/gpu/drm/nouveau/nouveau_connector.c | 9 +++++++++
> drivers/gpu/drm/nouveau/nouveau_drv.h | 8 ++++----
> drivers/gpu/drm/nouveau/nouveau_state.c | 6 ------
> 4 files changed, 27 insertions(+), 20 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) {
> diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
> index a21e000..3a1ecc7 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_connector.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
> @@ -116,6 +116,10 @@ nouveau_connector_destroy(struct drm_connector *connector)
> nouveau_connector_hotplug, connector);
> }
>
> + if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
> + connector->connector_type == DRM_MODE_CONNECTOR_eDP)
> + nouveau_backlight_exit(connector);
> +
> kfree(nv_connector->edid);
> drm_sysfs_connector_remove(connector);
> drm_connector_cleanup(connector);
> @@ -893,6 +897,11 @@ nouveau_connector_create(struct drm_device *dev, int index)
> }
>
> 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 46e3257..1918ed1 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_drv.h
> +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
> @@ -999,15 +999,15 @@ 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 void nouveau_backlight_exit(struct drm_device *);
> +extern int nouveau_backlight_init(struct drm_connector *);
> +extern void nouveau_backlight_exit(struct drm_connector *);
> #else
> -static inline int nouveau_backlight_init(struct drm_device *dev)
> +static inline int nouveau_backlight_init(struct drm_connector *dev)
> {
> return 0;
> }
>
> -static inline void nouveau_backlight_exit(struct drm_device *dev) { }
> +static inline void nouveau_backlight_exit(struct drm_connector *dev) { }
> #endif
>
> /* nouveau_bios.c */
> diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
> index a54fc43..f688f04 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_state.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_state.c
> @@ -738,10 +738,6 @@ nouveau_card_init(struct drm_device *dev)
> goto out_fence;
> }
>
> - ret = nouveau_backlight_init(dev);
> - if (ret)
> - NV_ERROR(dev, "Error %d registering backlight\n", ret);
> -
> nouveau_fbcon_init(dev);
> drm_kms_helper_poll_init(dev);
> return 0;
> @@ -793,8 +789,6 @@ static void nouveau_card_takedown(struct drm_device *dev)
> struct drm_nouveau_private *dev_priv = dev->dev_private;
> struct nouveau_engine *engine = &dev_priv->engine;
>
> - nouveau_backlight_exit(dev);
> -
> if (!engine->graph.accel_blocked) {
> nouveau_fence_fini(dev);
> nouveau_channel_put_unlocked(&dev_priv->channel);




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