This adds a function to get the revision id.
Signed-off-by: Jaecheol Lee <jc.lee@xxxxxxxxxxx>
Signed-off-by: Changhwan Youn <chaos.youn@xxxxxxxxxxx>
---
arch/arm/mach-exynos4/cpu.c | 10 ++++++++++
arch/arm/plat-s5p/include/plat/exynos4.h | 1 +
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-exynos4/cpu.c b/arch/arm/mach-exynos4/cpu.c
index 2d8a40c..8b106b8 100644
--- a/arch/arm/mach-exynos4/cpu.c
+++ b/arch/arm/mach-exynos4/cpu.c
@@ -234,6 +234,16 @@ static int __init exynos4_l2x0_cache_init(void)
early_initcall(exynos4_l2x0_cache_init);
#endif
+int exynos4_subrev(void)
+{
+ static int subrev = -1;
+
+ if (unlikely(subrev < 0))
+ subrev = readl(S5P_VA_CHIPID) & 0xf;
+
+ return subrev;
+}
+
int __init exynos4_init(void)
{
printk(KERN_INFO "EXYNOS4: Initializing architecture\n");
diff --git a/arch/arm/plat-s5p/include/plat/exynos4.h b/arch/arm/plat-s5p/include/plat/exynos4.h
index 907caab..d62f7f7 100644
--- a/arch/arm/plat-s5p/include/plat/exynos4.h
+++ b/arch/arm/plat-s5p/include/plat/exynos4.h
@@ -15,6 +15,7 @@
extern void exynos4_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
extern void exynos4_register_clocks(void);
extern void exynos4_setup_clocks(void);
+extern int exynos4_subrev(void);
#ifdef CONFIG_CPU_EXYNOS4210
--
1.7.1
--
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