[Intel-gfx] [PATCH 1/7] drm: Define a work struct for scheduling a uevent for modeset retry

[Jani Nikula]

On Thu, 27 Oct 2016, Manasi Navare <manasi.d.navare at intel.com> wrote:
> This work struct will be used to schedule a uevent on a separate
> thread. This will be scheduled after a link train failure during modeset
> to indicate a modeset retry request. It will get executed after the
> current modeset is complete and all locks are released. This was
> required to avoid deadlock.
>
> v2:
> * Create a generic work func not i915 specific (Daniel Vetter)
>
> Cc: dri-devel at lists.freedesktop.org
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
>
> Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
> ---
>  include/drm/drm_connector.h | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
> index ac9d7d8..fc9d475 100644
> --- a/include/drm/drm_connector.h
> +++ b/include/drm/drm_connector.h
> @@ -682,6 +682,11 @@ struct drm_connector {
>  	uint8_t num_h_tile, num_v_tile;
>  	uint8_t tile_h_loc, tile_v_loc;
>  	uint16_t tile_h_size, tile_v_size;
> +
> +	/* Work struct to schedule a uevent on link train failure for
> +	 * DisplayPort.
> +	 */
> +	struct work_struct modeset_retry_work;

I think at least for now we should keep this in intel_connector. All the
code using this will be in i915.

BR,
Jani.

>  };
>  
>  #define obj_to_connector(x) container_of(x, struct drm_connector, base)

-- 
Jani Nikula, Intel Open Source Technology Center