On 18 January 2016 at 19:52, Simon Glass sjg@chromium.org wrote:
U-Boot has separate code for LCDs and 'video' devices. Both now use a very similar API thanks to earlier work by Nikita Kiryanov. With the driver- model conversion we should unify these into a single uclass.
Unfortunately there are different features supported by each. This implementation provides for a common set of features which should serve most purposes. The intent is to support:
- bitmap devices with 8, 16 and 32 bits per pixel
- text console wih white on black or vice versa
- rotated text console
- bitmap display (BMP format)
More can be added as additional boards are ported over to use driver model for video.
The name 'video' is chosen for the uclass since it is more generic than LCD. Another option would be 'display' but that would introduce a third concept to U-Boot which seems like the wrong approach.
The existing LCD and video init functions are not needed now, so this uclass makes no attempt to implement them.
Signed-off-by: Simon Glass sjg@chromium.org Acked-by: Anatolij Gustschin agust@denx.de
Changes in v2:
- Fix Ebabling typo in comment
- Remove duplicated @fb_size line in common
- Fix comment for video_get_ysize()
drivers/video/Kconfig | 40 ++++++++ drivers/video/Makefile | 1 + drivers/video/video-uclass.c | 228 +++++++++++++++++++++++++++++++++++++++++++ include/dm/uclass-id.h | 1 + include/video.h | 168 +++++++++++++++++++++++++++++-- 5 files changed, 432 insertions(+), 6 deletions(-) create mode 100644 drivers/video/video-uclass.c
Applied to u-boot-dm