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SubjectRe: [PATCH 4/5] nouveau: Change the backlight parent device to the connector, not the PCI dev
From
On Fri, Jan 14, 2011 at 9:24 PM, Matthew Garrett <mjg@redhat.com> 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>
> ---
>  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);
> --
> 1.7.3.4
>
> --
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>

Hi Matthew Garrett,
I have problems with nouveau.
Do you know ?
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