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https://github.com/edk2-porting/linux-next.git
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0dc5e77c46
Patch from Tony Lindgren Update OMAP framebuffer low-level init code from linux-omap tree by Imre Deak. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/bootmem.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <asm/mach-types.h>
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#include <asm/mach/map.h>
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#include <asm/arch/board.h>
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#include <asm/arch/sram.h>
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#include <asm/arch/omapfb.h>
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#if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
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static struct omapfb_platform_data omapfb_config;
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static u64 omap_fb_dma_mask = ~(u32)0;
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static struct platform_device omap_fb_device = {
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.name = "omapfb",
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.id = -1,
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.dev = {
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.dma_mask = &omap_fb_dma_mask,
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.coherent_dma_mask = ~(u32)0,
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.platform_data = &omapfb_config,
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},
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.num_resources = 0,
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};
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/* called from map_io */
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void omapfb_reserve_mem(void)
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{
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const struct omap_fbmem_config *fbmem_conf;
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omapfb_config.fbmem.fb_sram_start = omap_fb_sram_start;
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omapfb_config.fbmem.fb_sram_size = omap_fb_sram_size;
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fbmem_conf = omap_get_config(OMAP_TAG_FBMEM, struct omap_fbmem_config);
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if (fbmem_conf != NULL) {
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/* indicate that the bootloader already initialized the
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* fb device, so we'll skip that part in the fb driver
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*/
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omapfb_config.fbmem.fb_sdram_start = fbmem_conf->fb_sdram_start;
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omapfb_config.fbmem.fb_sdram_size = fbmem_conf->fb_sdram_size;
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if (fbmem_conf->fb_sdram_size) {
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pr_info("Reserving %u bytes SDRAM for frame buffer\n",
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fbmem_conf->fb_sdram_size);
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reserve_bootmem(fbmem_conf->fb_sdram_start,
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fbmem_conf->fb_sdram_size);
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}
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}
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}
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static inline int omap_init_fb(void)
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{
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const struct omap_lcd_config *conf;
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conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
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if (conf == NULL)
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return 0;
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omapfb_config.lcd = *conf;
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return platform_device_register(&omap_fb_device);
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}
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arch_initcall(omap_init_fb);
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#else
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void omapfb_reserve_mem(void) {}
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#endif
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