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 --- 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 f563cbce86e1..14aebef5dc3a 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -489,6 +489,7 @@ 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);