[PATCH v2 45/60] drm/omap: dss: Add function to retrieve display for an output

[Sebastian Reichel]

Hi,

On Sat, May 26, 2018 at 08:25:03PM +0300, Laurent Pinchart wrote:
> Add a new omapdss_display_get() function to retrieve the omap_dss_device
> for a given DSS output. This will be used when reversing the direction
> of the DSS pipeline handling logic.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> ---

Reviewed-by: Sebastian Reichel <sebastian.reichel at collabora.co.uk>

-- Sebastian

>  drivers/gpu/drm/omapdrm/dss/display.c | 9 +++++++++
>  drivers/gpu/drm/omapdrm/dss/omapdss.h | 1 +
>  2 files changed, 10 insertions(+)
> 
> diff --git a/drivers/gpu/drm/omapdrm/dss/display.c b/drivers/gpu/drm/omapdrm/dss/display.c
> index 65ca71859c7d..697dab0435d6 100644
> --- a/drivers/gpu/drm/omapdrm/dss/display.c
> +++ b/drivers/gpu/drm/omapdrm/dss/display.c
> @@ -49,3 +49,12 @@ void omapdss_display_init(struct omap_dss_device *dssdev)
>  					      "display%u", id);
>  }
>  EXPORT_SYMBOL_GPL(omapdss_display_init);
> +
> +struct omap_dss_device *omapdss_display_get(struct omap_dss_device *output)
> +{
> +	while (output->next)
> +		output = output->next;
> +
> +	return omapdss_device_get(output);
> +}
> +EXPORT_SYMBOL_GPL(omapdss_display_get);
> diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> index 723124f6e596..1d7263fc6077 100644
> --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
> +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> @@ -491,6 +491,7 @@ static inline bool omapdss_is_initialized(void)
>  #define for_each_dss_display(d) \
>  	while ((d = omapdss_device_get_next(d, true, false)) != NULL)
>  void omapdss_display_init(struct omap_dss_device *dssdev);
> +struct omap_dss_device *omapdss_display_get(struct omap_dss_device *output);
>  
>  void omapdss_device_register(struct omap_dss_device *dssdev);
>  void omapdss_device_unregister(struct omap_dss_device *dssdev);
> -- 
> Regards,
> 
> Laurent Pinchart
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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