From a0832798c05241f15e793805b6024919c07b8292 Mon Sep 17 00:00:00 2001 From: Tzachi Perelstein Date: Mon, 12 Nov 2007 19:38:51 +0200 Subject: [I2C] Split mv643xx I2C platform support The motivation for this change is to allow other chips, like the Marvell Orion ARM SoC family, to use the existing i2c-mv64xxx driver. Signed-off-by: Tzachi Perelstein Acked-by: Nicolas Pitre Acked-by: Dale Farnsworth Acked-by: Mark A. Greer Acked-by: Jean Delvare --- drivers/i2c/busses/Kconfig | 2 +- drivers/i2c/busses/i2c-mv64xxx.c | 31 +++++++++++++++++-------------- 2 files changed, 18 insertions(+), 15 deletions(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index c466c6cfc2e5..b148bf0ec6b7 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -648,7 +648,7 @@ config I2C_PCA_ISA config I2C_MV64XXX tristate "Marvell mv64xxx I2C Controller" - depends on MV64X60 && EXPERIMENTAL + depends on (MV64X60 || ARCH_ORION) && EXPERIMENTAL help If you say yes to this option, support will be included for the built-in I2C interface on the Marvell 64xxx line of host bridges. diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index bb7bf68a7fb6..cdd1ef99fcff 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 * @@ -14,7 +14,7 @@ #include #include #include -#include +#include #include #include @@ -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; -- cgit v1.2.3