From fee474a22e0f6cb287f2aba5333334b71e27b942 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 28 Jul 2011 11:28:05 +0200 Subject: ARM i.MX IIM: Add a iim read function To allow reading the iim from code. Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/iim.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) (limited to 'arch/arm/mach-imx/iim.c') diff --git a/arch/arm/mach-imx/iim.c b/arch/arm/mach-imx/iim.c index 0774ebba9c..80dfa9becb 100644 --- a/arch/arm/mach-imx/iim.c +++ b/arch/arm/mach-imx/iim.c @@ -22,6 +22,8 @@ #include #include #include +#include +#include #include @@ -73,7 +75,7 @@ static int do_fuse_sense(unsigned long reg_base, unsigned int bank, return readb(reg_base + IIM_SDAT); } -static ssize_t imx_iim_read(struct cdev *cdev, void *buf, size_t count, +static ssize_t imx_iim_cdev_read(struct cdev *cdev, void *buf, size_t count, ulong offset, ulong flags) { ulong size, i; @@ -168,7 +170,7 @@ out: } #endif /* CONFIG_IMX_IIM_FUSE_BLOW */ -static ssize_t imx_iim_write(struct cdev *cdev, const void *buf, size_t count, +static ssize_t imx_iim_cdev_write(struct cdev *cdev, const void *buf, size_t count, ulong offset, ulong flags) { ulong size, i; @@ -204,8 +206,8 @@ static ssize_t imx_iim_write(struct cdev *cdev, const void *buf, size_t count, } static struct file_operations imx_iim_ops = { - .read = imx_iim_read, - .write = imx_iim_write, + .read = imx_iim_cdev_read, + .write = imx_iim_cdev_write, .lseek = dev_lseek_default, }; @@ -297,6 +299,24 @@ static int imx_iim_init(void) } coredevice_initcall(imx_iim_init); +int imx_iim_read(unsigned int bank, int offset, void *buf, int count) +{ + struct cdev *cdev; + char *name = asprintf(DRIVERNAME "_bank%d", bank); + int ret; + + cdev = cdev_open(name, O_RDONLY); + if (!cdev) + return -ENODEV; + + ret = cdev_read(cdev, buf, count, offset, 0); + + cdev_close(cdev); + free(name); + + return ret; +} + int imx_iim_get_mac(unsigned char *mac) { int i; -- cgit v1.2.3