[Nouveau] [PATCH REBASED 2/2] Do not register interface if Apple GMUX detected

[Pierre Moreau]

From: Pierre Moreau 

The Apple GMUX is the one managing the backlight, so there is no need for
Nouveau to register its own backlight interface.

v2: Do not split information message on two lines as it prevents from grepping
it, as pointed out by Lukas Wunner

Signed-off-by: Pierre Moreau 
---
 drivers/gpu/drm/nouveau/nouveau_backlight.c | 6 ++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c 
b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index 0e69612..3c91c24 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -30,6 +30,7 @@
  * Register locations derived from NVClock by Roderick Colenbrander
  */
 
+#include 
 #include 
 #include 
 
@@ -258,6 +259,11 @@ nouveau_backlight_init(struct drm_device *dev)
struct nvif_device *device = &drm->device;
struct drm_connector *connector;
 
+   if (apple_gmux_present()) {
+   NV_INFO(drm, "Apple GMUX detected: not registering Nouveau 
backlight interface");
+   return 0;
+   }
+
INIT_LIST_HEAD(&drm->bl_connectors);
 
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-- 
2.10.2

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Re: [Nouveau] [PATCH REBASED 2/2] Do not register interface if Apple GMUX detected

[Lukas Wunner]

On Sun, Nov 13, 2016 at 08:57:07PM +0100, Pierre Moreau wrote:
> From: Pierre Moreau 
> 
> The Apple GMUX is the one managing the backlight, so there is no need for
> Nouveau to register its own backlight interface.
> 
> v2: Do not split information message on two lines as it prevents from grepping
> it, as pointed out by Lukas Wunner
> 
> Signed-off-by: Pierre Moreau 

Reviewed-by: Lukas Wunner 

Thanks,

Lukas

> ---
>  drivers/gpu/drm/nouveau/nouveau_backlight.c | 6 ++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c 
> b/drivers/gpu/drm/nouveau/nouveau_backlight.c
> index 0e69612..3c91c24 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
> @@ -30,6 +30,7 @@
>   * Register locations derived from NVClock by Roderick Colenbrander
>   */
>  
> +#include 
>  #include 
>  #include 
>  
> @@ -258,6 +259,11 @@ nouveau_backlight_init(struct drm_device *dev)
>   struct nvif_device *device = &drm->device;
>   struct drm_connector *connector;
>  
> + if (apple_gmux_present()) {
> + NV_INFO(drm, "Apple GMUX detected: not registering Nouveau 
> backlight interface");
> + return 0;
> + }
> +
>   INIT_LIST_HEAD(&drm->bl_connectors);
>  
>   list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> -- 
> 2.10.2
> 
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