diff options
| -rw-r--r-- | drivers/video/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/video/fsl_dcu_fb.c | 45 | ||||
| -rw-r--r-- | include/fsl_dcu_fb.h | 1 |
3 files changed, 51 insertions, 3 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 6aab8af1b3..d1b017cfad 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -402,6 +402,14 @@ config VIDEO_FSL_DCU_FB This enables support for Freescale Display Control Unit (DCU4) module found on Freescale Vybrid and QorIQ family of SoCs. +config VIDEO_FSL_DCU_MAX_FB_SIZE_MB + int "Freescale DCU framebuffer size" + depends on VIDEO_FSL_DCU_FB + default 4194304 + help + Set maximum framebuffer size to be used for Freescale Display + Controller Unit (DCU4). + config VIDEO_ROCKCHIP bool "Enable Rockchip video support" depends on DM_VIDEO diff --git a/drivers/video/fsl_dcu_fb.c b/drivers/video/fsl_dcu_fb.c index d4cd382776..7f03290b74 100644 --- a/drivers/video/fsl_dcu_fb.c +++ b/drivers/video/fsl_dcu_fb.c @@ -8,6 +8,7 @@ #include <asm/io.h> #include <common.h> +#include <fdt_support.h> #include <fsl_dcu_fb.h> #include <linux/fb.h> #include <malloc.h> @@ -79,6 +80,8 @@ #define BPP_24_RGB888 5 #define BPP_32_ARGB8888 6 +DECLARE_GLOBAL_DATA_PTR; + /* * This setting is used for the TWR_LCD_RGB card */ @@ -254,11 +257,19 @@ int fsl_dcu_init(unsigned int xres, unsigned int yres, struct dcu_reg *regs = (struct dcu_reg *)CONFIG_SYS_DCU_ADDR; unsigned int div, mode; - /* Memory allocation for framebuffer */ info.screen_size = info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8); - info.screen_base = (char *)memalign(ARCH_DMA_MINALIGN, - roundup(info.screen_size, ARCH_DMA_MINALIGN)); + + if (info.screen_size > CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB) { + info.screen_size = 0; + return -ENOMEM; + } + + /* Reserve framebuffer at the end of memory */ + gd->fb_base = gd->bd->bi_dram[0].start + + gd->bd->bi_dram[0].size - info.screen_size; + info.screen_base = (char *)gd->fb_base; + memset(info.screen_base, 0, info.screen_size); reset_total_layers(); @@ -305,6 +316,11 @@ int fsl_dcu_init(unsigned int xres, unsigned int yres, return 0; } +ulong board_get_usable_ram_top(ulong total_size) +{ + return gd->ram_top - CONFIG_VIDEO_FSL_DCU_MAX_FB_SIZE_MB; +} + void *video_hw_init(void) { static GraphicDevice ctfb; @@ -363,3 +379,26 @@ void *video_hw_init(void) return &ctfb; } + +#if defined(CONFIG_OF_BOARD_SETUP) +int fsl_dcu_fixedfb_setup(void *blob) +{ + u64 start, size; + int ret; + + start = gd->bd->bi_dram[0].start; + size = gd->bd->bi_dram[0].size - info.screen_size; + + /* + * Align size on section size (1 MiB). + */ + size &= 0xfff00000; + ret = fdt_fixup_memory_banks(blob, &start, &size, 1); + if (ret) { + eprintf("Cannot setup fb: Error reserving memory\n"); + return ret; + } + + return 0; +} +#endif diff --git a/include/fsl_dcu_fb.h b/include/fsl_dcu_fb.h index 42632984d3..67e29e74e6 100644 --- a/include/fsl_dcu_fb.h +++ b/include/fsl_dcu_fb.h @@ -9,6 +9,7 @@ int fsl_dcu_init(unsigned int xres, unsigned int yres, unsigned int pixel_format); +int fsl_dcu_fixedfb_setup(void *blob); /* Prototypes for external board-specific functions */ int platform_dcu_init(unsigned int xres, unsigned int yres, |