diff options
Diffstat (limited to 'arch/arm/mach-imx/cpu-imx35.c')
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx35.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/arch/arm/mach-imx/cpu-imx35.c b/arch/arm/mach-imx/cpu-imx35.c index 6637cd819ec..ec3aaa098c1 100644 --- a/arch/arm/mach-imx/cpu-imx35.c +++ b/arch/arm/mach-imx/cpu-imx35.c @@ -10,35 +10,34 @@ */ #include <linux/module.h> #include <linux/io.h> -#include <mach/hardware.h> -#include <mach/iim.h> -unsigned int mx35_cpu_rev; -EXPORT_SYMBOL(mx35_cpu_rev); +#include "hardware.h" +#include "iim.h" -void __init mx35_read_cpu_rev(void) +static int mx35_cpu_rev = -1; + +static int mx35_read_cpu_rev(void) { u32 rev; - char *srev; rev = __raw_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV)); switch (rev) { case 0x00: - mx35_cpu_rev = IMX_CHIP_REVISION_1_0; - srev = "1.0"; - break; + return IMX_CHIP_REVISION_1_0; case 0x10: - mx35_cpu_rev = IMX_CHIP_REVISION_2_0; - srev = "2.0"; - break; + return IMX_CHIP_REVISION_2_0; case 0x11: - mx35_cpu_rev = IMX_CHIP_REVISION_2_1; - srev = "2.1"; - break; + return IMX_CHIP_REVISION_2_1; default: - mx35_cpu_rev = IMX_CHIP_REVISION_UNKNOWN; - srev = "unknown"; + return IMX_CHIP_REVISION_UNKNOWN; } +} + +int mx35_revision(void) +{ + if (mx35_cpu_rev == -1) + mx35_cpu_rev = mx35_read_cpu_rev(); - printk(KERN_INFO "CPU identified as i.MX35, silicon rev %s\n", srev); + return mx35_cpu_rev; } +EXPORT_SYMBOL(mx35_revision); |