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| author | Luc Verhaegen <libv@skynet.be> | 2014-08-13 07:55:07 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2014-11-25 13:38:46 +0100 |
| commit | 2d7a084ba0d77b96c3e053492173f3dda364d350 (patch) | |
| tree | 119afa376ea0189b65b26391a9ab83c4e5626cae /drivers | |
| parent | 11b8dfa7180ca8fe5b9bcf5a2ef800ceb9573334 (diff) | |
| download | u-boot-imx-2d7a084ba0d77b96c3e053492173f3dda364d350.zip u-boot-imx-2d7a084ba0d77b96c3e053492173f3dda364d350.tar.gz u-boot-imx-2d7a084ba0d77b96c3e053492173f3dda364d350.tar.bz2 | |
sunxi: video: Add simplefb support
Add simplefb support, note this depends on the kernel having support for
the clocks property which has recently been added to the simplefb devicetree
binding.
Signed-off-by: Luc Verhaegen <libv@skynet.be>
[hdegoede@redhat.com: Use pre-populated simplefb node under /chosen as
disussed on the devicetree list]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>.
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/sunxi_display.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c index 63945e0..d241397 100644 --- a/drivers/video/sunxi_display.c +++ b/drivers/video/sunxi_display.c @@ -13,6 +13,8 @@ #include <asm/arch/display.h> #include <asm/global_data.h> #include <asm/io.h> +#include <fdtdec.h> +#include <fdt_support.h> #include <linux/fb.h> #include <video_fb.h> @@ -408,3 +410,42 @@ void *video_hw_init(void) return graphic_device; } + +/* + * Simplefb support. + */ +#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB) +int sunxi_simplefb_setup(void *blob) +{ + static GraphicDevice *graphic_device = &sunxi_display.graphic_device; + int offset, ret; + + if (!sunxi_display.enabled) + return 0; + + /* Find a framebuffer node, with pipeline == "de_be0-lcd0-hdmi" */ + offset = fdt_node_offset_by_compatible(blob, -1, + "allwinner,simple-framebuffer"); + while (offset >= 0) { + ret = fdt_find_string(blob, offset, "allwinner,pipeline", + "de_be0-lcd0-hdmi"); + if (ret == 0) + break; + offset = fdt_node_offset_by_compatible(blob, offset, + "allwinner,simple-framebuffer"); + } + if (offset < 0) { + eprintf("Cannot setup simplefb: node not found\n"); + return 0; /* Keep older kernels working */ + } + + ret = fdt_setup_simplefb_node(blob, offset, gd->fb_base, + graphic_device->winSizeX, graphic_device->winSizeY, + graphic_device->winSizeX * graphic_device->gdfBytesPP, + "x8r8g8b8"); + if (ret) + eprintf("Cannot setup simplefb: Error setting properties\n"); + + return ret; +} +#endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */ |