From cc3f414cf2e404130584b63d373161ba6fd24bc2 Mon Sep 17 00:00:00 2001 From: Steffen Trumtrar Date: Thu, 4 Oct 2012 15:32:52 +0200 Subject: video: add of helper for display timings/videomode This adds support for reading display timings from DT into a struct display_timings. The of_display_timing implementation supports multiple subnodes. All children are read into an array, that can be queried. If no native mode is specified, the first subnode will be used. For cases where the graphics driver knows there can be only one mode description or where the driver only supports one mode, a helper function of_get_videomode is added, that gets a struct videomode from DT. Signed-off-by: Steffen Trumtrar Signed-off-by: Philipp Zabel Acked-by: Stephen Warren Reviewed-by: Thierry Reding Acked-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Philipp Zabel Reviewed-by: Laurent Pinchart Acked-by: Laurent Pinchart Tested-by: Afzal Mohammed Tested-by: Rob Clark Tested-by: Leela Krishna Amudala --- include/video/of_display_timing.h | 20 ++++++++++++++++++++ include/video/of_videomode.h | 18 ++++++++++++++++++ 2 files changed, 38 insertions(+) create mode 100644 include/video/of_display_timing.h create mode 100644 include/video/of_videomode.h (limited to 'include/video') diff --git a/include/video/of_display_timing.h b/include/video/of_display_timing.h new file mode 100644 index 000000000000..8016eb727cf3 --- /dev/null +++ b/include/video/of_display_timing.h @@ -0,0 +1,20 @@ +/* + * Copyright 2012 Steffen Trumtrar + * + * display timings of helpers + * + * This file is released under the GPLv2 + */ + +#ifndef __LINUX_OF_DISPLAY_TIMING_H +#define __LINUX_OF_DISPLAY_TIMING_H + +struct device_node; +struct display_timings; + +#define OF_USE_NATIVE_MODE -1 + +struct display_timings *of_get_display_timings(struct device_node *np); +int of_display_timings_exist(struct device_node *np); + +#endif diff --git a/include/video/of_videomode.h b/include/video/of_videomode.h new file mode 100644 index 000000000000..a07efcc51424 --- /dev/null +++ b/include/video/of_videomode.h @@ -0,0 +1,18 @@ +/* + * Copyright 2012 Steffen Trumtrar + * + * videomode of-helpers + * + * This file is released under the GPLv2 + */ + +#ifndef __LINUX_OF_VIDEOMODE_H +#define __LINUX_OF_VIDEOMODE_H + +struct device_node; +struct videomode; + +int of_get_videomode(struct device_node *np, struct videomode *vm, + int index); + +#endif /* __LINUX_OF_VIDEOMODE_H */ -- cgit v1.2.2