diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-mv64xxx.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-mv64xxx.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index bb7bf68a7fb6..036e6a883e67 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -1,6 +1,6 @@ /* - * Driver for the i2c controller on the Marvell line of host bridges for MIPS - * and PPC (e.g, gt642[46]0, mv643[46]0, mv644[46]0). + * Driver for the i2c controller on the Marvell line of host bridges + * (e.g, gt642[46]0, mv643[46]0, mv644[46]0, and Orion SoC family). * * Author: Mark A. Greer <mgreer@mvista.com> * @@ -14,7 +14,7 @@ #include <linux/spinlock.h> #include <linux/i2c.h> #include <linux/interrupt.h> -#include <linux/mv643xx.h> +#include <linux/mv643xx_i2c.h> #include <linux/platform_device.h> #include <asm/io.h> @@ -86,6 +86,7 @@ struct mv64xxx_i2c_data { u32 cntl_bits; void __iomem *reg_base; u32 reg_base_p; + u32 reg_size; u32 addr1; u32 addr2; u32 bytes_left; @@ -463,17 +464,20 @@ static int __devinit mv64xxx_i2c_map_regs(struct platform_device *pd, struct mv64xxx_i2c_data *drv_data) { - struct resource *r; + int size; + struct resource *r = platform_get_resource(pd, IORESOURCE_MEM, 0); - if ((r = platform_get_resource(pd, IORESOURCE_MEM, 0)) && - request_mem_region(r->start, MV64XXX_I2C_REG_BLOCK_SIZE, - drv_data->adapter.name)) { + if (!r) + return -ENODEV; - drv_data->reg_base = ioremap(r->start, - MV64XXX_I2C_REG_BLOCK_SIZE); - drv_data->reg_base_p = r->start; - } else - return -ENOMEM; + size = r->end - r->start + 1; + + if (!request_mem_region(r->start, size, drv_data->adapter.name)) + return -EBUSY; + + drv_data->reg_base = ioremap(r->start, size); + drv_data->reg_base_p = r->start; + drv_data->reg_size = size; return 0; } @@ -483,8 +487,7 @@ mv64xxx_i2c_unmap_regs(struct mv64xxx_i2c_data *drv_data) { if (drv_data->reg_base) { iounmap(drv_data->reg_base); - release_mem_region(drv_data->reg_base_p, - MV64XXX_I2C_REG_BLOCK_SIZE); + release_mem_region(drv_data->reg_base_p, drv_data->reg_size); } drv_data->reg_base = NULL; @@ -529,7 +532,6 @@ mv64xxx_i2c_probe(struct platform_device *pd) drv_data->adapter.owner = THIS_MODULE; drv_data->adapter.class = I2C_CLASS_HWMON; drv_data->adapter.timeout = pdata->timeout; - drv_data->adapter.retries = pdata->retries; drv_data->adapter.nr = pd->id; platform_set_drvdata(pd, drv_data); i2c_set_adapdata(&drv_data->adapter, drv_data); |