Merge branch 'upstream'
[linux-2.6] / arch / arm / plat-omap / fb.c
1 #include <linux/config.h>
2 #include <linux/module.h>
3 #include <linux/kernel.h>
4 #include <linux/init.h>
5 #include <linux/platform_device.h>
6 #include <linux/bootmem.h>
7
8 #include <asm/hardware.h>
9 #include <asm/io.h>
10 #include <asm/mach-types.h>
11 #include <asm/mach/map.h>
12
13 #include <asm/arch/board.h>
14 #include <asm/arch/sram.h>
15 #include <asm/arch/omapfb.h>
16
17 #if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
18
19 static struct omapfb_platform_data omapfb_config;
20
21 static u64 omap_fb_dma_mask = ~(u32)0;
22
23 static struct platform_device omap_fb_device = {
24         .name           = "omapfb",
25         .id             = -1,
26         .dev = {
27                 .dma_mask               = &omap_fb_dma_mask,
28                 .coherent_dma_mask      = ~(u32)0,
29                 .platform_data          = &omapfb_config,
30         },
31         .num_resources = 0,
32 };
33
34 /* called from map_io */
35 void omapfb_reserve_mem(void)
36 {
37         const struct omap_fbmem_config *fbmem_conf;
38
39         omapfb_config.fbmem.fb_sram_start = omap_fb_sram_start;
40         omapfb_config.fbmem.fb_sram_size = omap_fb_sram_size;
41
42         fbmem_conf = omap_get_config(OMAP_TAG_FBMEM, struct omap_fbmem_config);
43
44         if (fbmem_conf != NULL) {
45                 /* indicate that the bootloader already initialized the
46                  * fb device, so we'll skip that part in the fb driver
47                  */
48                 omapfb_config.fbmem.fb_sdram_start = fbmem_conf->fb_sdram_start;
49                 omapfb_config.fbmem.fb_sdram_size = fbmem_conf->fb_sdram_size;
50                 if (fbmem_conf->fb_sdram_size) {
51                         pr_info("Reserving %u bytes SDRAM for frame buffer\n",
52                                 fbmem_conf->fb_sdram_size);
53                         reserve_bootmem(fbmem_conf->fb_sdram_start,
54                                         fbmem_conf->fb_sdram_size);
55                 }
56         }
57 }
58
59 static inline int omap_init_fb(void)
60 {
61         const struct omap_lcd_config *conf;
62
63         conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
64         if (conf == NULL)
65                 return 0;
66
67         omapfb_config.lcd = *conf;
68
69         return platform_device_register(&omap_fb_device);
70 }
71
72 arch_initcall(omap_init_fb);
73
74 #else
75
76 void omapfb_reserve_mem(void) {}
77
78 #endif
79
80