| Jamie Iles | af75655 | 2011-07-25 17:36:42 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2011 Picochip Ltd., Jamie Iles |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * All enquiries to support@picochip.com |
| 9 | */ |
| 10 | #include <linux/io.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/of.h> |
| 14 | |
| 15 | #include <asm/mach/map.h> |
| 16 | |
| 17 | #include <mach/map.h> |
| 18 | #include <mach/picoxcell_soc.h> |
| 19 | |
| 20 | #include "common.h" |
| 21 | |
| 22 | void __init picoxcell_map_io(void) |
| 23 | { |
| 24 | struct map_desc io_map = { |
| 25 | .virtual = PHYS_TO_IO(PICOXCELL_PERIPH_BASE), |
| 26 | .pfn = __phys_to_pfn(PICOXCELL_PERIPH_BASE), |
| 27 | .length = PICOXCELL_PERIPH_LENGTH, |
| 28 | .type = MT_DEVICE, |
| 29 | }; |
| 30 | |
| 31 | iotable_init(&io_map, 1); |
| 32 | } |
| 33 | |
| 34 | void __iomem *picoxcell_ioremap(unsigned long p, size_t size, |
| 35 | unsigned int type) |
| 36 | { |
| 37 | if (unlikely(size == 0)) |
| 38 | return NULL; |
| 39 | |
| 40 | if (p >= PICOXCELL_PERIPH_BASE && |
| 41 | p < PICOXCELL_PERIPH_BASE + PICOXCELL_PERIPH_LENGTH) |
| 42 | return IO_ADDRESS(p); |
| 43 | |
| 44 | return __arm_ioremap_caller(p, size, type, |
| 45 | __builtin_return_address(0)); |
| 46 | } |
| 47 | EXPORT_SYMBOL_GPL(picoxcell_ioremap); |
| 48 | |
| 49 | void picoxcell_iounmap(volatile void __iomem *addr) |
| 50 | { |
| 51 | unsigned long virt = (unsigned long)addr; |
| 52 | |
| 53 | if (virt >= VMALLOC_START && virt < VMALLOC_END) |
| 54 | __iounmap(addr); |
| 55 | } |
| 56 | EXPORT_SYMBOL_GPL(picoxcell_iounmap); |