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@ideasonboard.com Reviewed-by: Sebastian Reichel sebastian.reichel@collabora.co.uk --- 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 53cb46f6503d..34b2a4ef63a4 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 5cbbfb16369b..1621d1eaed42 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -496,6 +496,7 @@ static inline bool omapdss_is_initialized(void) #define for_each_dss_display(d) \ while ((d = omapdss_device_get_next(d, OMAP_DSS_DEVICE_TYPE_DISPLAY)) != 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);