diff options
Diffstat (limited to 'arch/avr32/boards/mimc200/fram.c')
-rw-r--r-- | arch/avr32/boards/mimc200/fram.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/arch/avr32/boards/mimc200/fram.c b/arch/avr32/boards/mimc200/fram.c deleted file mode 100644 index c1466a872b9c..000000000000 --- a/arch/avr32/boards/mimc200/fram.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * FRAM driver for MIMC200 board - * - * Copyright 2008 Mark Jackson <mpfj@mimc.co.uk> - * - * This module adds *very* simply support for the system's FRAM device. - * At the moment, this is hard-coded to the MIMC200 platform, and only - * supports mmap(). - */ - -#define FRAM_VERSION "1.0" - -#include <linux/miscdevice.h> -#include <linux/module.h> -#include <linux/proc_fs.h> -#include <linux/mm.h> -#include <linux/io.h> - -#define FRAM_BASE 0xac000000 -#define FRAM_SIZE 0x20000 - -/* - * The are the file operation function for user access to /dev/fram - */ - -static int fram_mmap(struct file *filp, struct vm_area_struct *vma) -{ - int ret; - - ret = remap_pfn_range(vma, - vma->vm_start, - virt_to_phys((void *)((unsigned long)FRAM_BASE)) >> PAGE_SHIFT, - vma->vm_end-vma->vm_start, - PAGE_SHARED); - - if (ret != 0) - return -EAGAIN; - - return 0; -} - -static const struct file_operations fram_fops = { - .owner = THIS_MODULE, - .mmap = fram_mmap, - .llseek = noop_llseek, -}; - -#define FRAM_MINOR 0 - -static struct miscdevice fram_dev = { - FRAM_MINOR, - "fram", - &fram_fops -}; - -static int __init -fram_init(void) -{ - int ret; - - ret = misc_register(&fram_dev); - if (ret) { - printk(KERN_ERR "fram: can't misc_register on minor=%d\n", - FRAM_MINOR); - return ret; - } - printk(KERN_INFO "FRAM memory driver v" FRAM_VERSION "\n"); - return 0; -} - -static void __exit -fram_cleanup_module(void) -{ - misc_deregister(&fram_dev); -} - -module_init(fram_init); -module_exit(fram_cleanup_module); - -MODULE_LICENSE("GPL"); - -MODULE_ALIAS_MISCDEV(FRAM_MINOR); |