diff options
| author | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
| commit | 8b3f6af86378d0a10ca2f1ded1da124aef13b62c (patch) | |
| tree | de6ca90295730343c495be8d98be8efa322140ef /arch/powerpc/sysdev/mmio_nvram.c | |
| parent | 139d6065c83071d5f66cd013a274a43699f8e2c1 (diff) | |
| parent | 94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/staging/Kconfig
drivers/staging/Makefile
drivers/staging/cpc-usb/TODO
drivers/staging/cpc-usb/cpc-usb_drv.c
drivers/staging/cpc-usb/cpc.h
drivers/staging/cpc-usb/cpc_int.h
drivers/staging/cpc-usb/cpcusb.h
Diffstat (limited to 'arch/powerpc/sysdev/mmio_nvram.c')
| -rw-r--r-- | arch/powerpc/sysdev/mmio_nvram.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/mmio_nvram.c b/arch/powerpc/sysdev/mmio_nvram.c index 7b49633a4bd0..207324209065 100644 --- a/arch/powerpc/sysdev/mmio_nvram.c +++ b/arch/powerpc/sysdev/mmio_nvram.c @@ -53,6 +53,23 @@ static ssize_t mmio_nvram_read(char *buf, size_t count, loff_t *index) return count; } +static unsigned char mmio_nvram_read_val(int addr) +{ + unsigned long flags; + unsigned char val; + + if (addr >= mmio_nvram_len) + return 0xff; + + spin_lock_irqsave(&mmio_nvram_lock, flags); + + val = ioread8(mmio_nvram_start + addr); + + spin_unlock_irqrestore(&mmio_nvram_lock, flags); + + return val; +} + static ssize_t mmio_nvram_write(char *buf, size_t count, loff_t *index) { unsigned long flags; @@ -72,6 +89,19 @@ static ssize_t mmio_nvram_write(char *buf, size_t count, loff_t *index) return count; } +void mmio_nvram_write_val(int addr, unsigned char val) +{ + unsigned long flags; + + if (addr < mmio_nvram_len) { + spin_lock_irqsave(&mmio_nvram_lock, flags); + + iowrite8(val, mmio_nvram_start + addr); + + spin_unlock_irqrestore(&mmio_nvram_lock, flags); + } +} + static ssize_t mmio_nvram_get_size(void) { return mmio_nvram_len; @@ -114,6 +144,8 @@ int __init mmio_nvram_init(void) printk(KERN_INFO "mmio NVRAM, %luk at 0x%lx mapped to %p\n", mmio_nvram_len >> 10, nvram_addr, mmio_nvram_start); + ppc_md.nvram_read_val = mmio_nvram_read_val; + ppc_md.nvram_write_val = mmio_nvram_write_val; ppc_md.nvram_read = mmio_nvram_read; ppc_md.nvram_write = mmio_nvram_write; ppc_md.nvram_size = mmio_nvram_get_size; |
