From: Luc Verhaegen libv@skynet.be
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 --- arch/arm/include/asm/arch-sunxi/display.h | 4 +++ board/sunxi/board.c | 11 ++++++++ drivers/video/sunxi_display.c | 42 +++++++++++++++++++++++++++++++ include/configs/sunxi-common.h | 8 ++++++ 4 files changed, 65 insertions(+)
diff --git a/arch/arm/include/asm/arch-sunxi/display.h b/arch/arm/include/asm/arch-sunxi/display.h index 8d80ceb..c9d81ba 100644 --- a/arch/arm/include/asm/arch-sunxi/display.h +++ b/arch/arm/include/asm/arch-sunxi/display.h @@ -195,4 +195,8 @@ struct sunxi_hdmi_reg { #define SUNXI_HDMI_PLL_DBG0_PLL3 (0 << 21) #define SUNXI_HDMI_PLL_DBG0_PLL7 (1 << 21)
+#ifdef CONFIG_VIDEO_DT_SIMPLEFB +int sunxi_simplefb_setup(void *blob); +#endif + #endif /* _SUNXI_DISPLAY_H */ diff --git a/board/sunxi/board.c b/board/sunxi/board.c index e6ec5b8..d4530e8 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -24,6 +24,7 @@ #endif #include <asm/arch/clock.h> #include <asm/arch/cpu.h> +#include <asm/arch/display.h> #include <asm/arch/dram.h> #include <asm/arch/gpio.h> #include <asm/arch/mmc.h> @@ -237,3 +238,13 @@ int misc_init_r(void) return 0; } #endif + +#ifdef CONFIG_OF_BOARD_SETUP +void +ft_board_setup(void *blob, bd_t *bd) +{ +#ifdef CONFIG_VIDEO_DT_SIMPLEFB + sunxi_simplefb_setup(blob); +#endif +} +#endif /* CONFIG_OF_BOARD_SETUP */ diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c index 3f46c31..2f3f5db 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>
@@ -416,3 +418,43 @@ 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 */ diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h index 900ef52..d5d907b 100644 --- a/include/configs/sunxi-common.h +++ b/include/configs/sunxi-common.h @@ -204,6 +204,9 @@ */ #define CONFIG_SUNXI_FB_SIZE (8 << 20)
+/* Do we want to initialize a simple FB? */ +#define CONFIG_VIDEO_DT_SIMPLEFB + #define CONFIG_VIDEO_SUNXI
#define CONFIG_CFB_CONSOLE @@ -217,6 +220,11 @@
#define CONFIG_SYS_MEM_TOP_HIDE ((CONFIG_SUNXI_FB_SIZE + 0xFFF) & ~0xFFF)
+/* To be able to hook simplefb into dt */ +#ifdef CONFIG_VIDEO_DT_SIMPLEFB +#define CONFIG_OF_BOARD_SETUP +#endif + #endif /* CONFIG_VIDEO */
/* Ethernet support */