[PATCH v2 1/2] ARM: imx: Introduce generic function for displaying silicon revision

[Fabio Estevam]

Currently each i.MX processor has its own function for displaying the silicon 
revision.

Introduce a generic function for this purpose, so that all i.MX processors can 
reuse it.

Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
Changes since v1:

- Introduce this generic function as suggested by Sascha Hauer.

Sascha,

If these 2 patches are merged, then I will convert the other i.MX processors
to use this new method.

 arch/arm/plat-mxc/cpu.c                 |   10 ++++++++++
 arch/arm/plat-mxc/include/mach/common.h |    1 +
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-mxc/cpu.c b/arch/arm/plat-mxc/cpu.c
index 386e0d5..f081ef0 100644
--- a/arch/arm/plat-mxc/cpu.c
+++ b/arch/arm/plat-mxc/cpu.c
@@ -1,5 +1,6 @@
 
 #include <linux/module.h>
+#include <mach/hardware.h>
 
 unsigned int __mxc_cpu_type;
 EXPORT_SYMBOL(__mxc_cpu_type);
@@ -9,3 +10,12 @@ void mxc_set_cpu_type(unsigned int type)
 	__mxc_cpu_type = type;
 }
 
+void imx_print_silicon_rev(const char *cpu, int srev)
+{
+	if (srev == IMX_CHIP_REVISION_UNKNOWN)
+		pr_info("CPU identified as %s, unknown revision\n", cpu);
+	else
+		pr_info("CPU identified as %s, silicon rev %d.%d\n",
+				cpu, (srev >> 4) & 0xf, srev & 0xf);
+}
+EXPORT_SYMBOL(imx_print_silicon_rev);
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 91fa263..e427f63 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -72,4 +72,5 @@ extern void mxc_arch_reset_init(void __iomem *);
 extern void mx51_efikamx_reset(void);
 extern int mx53_revision(void);
 extern int mx53_display_revision(void);
+extern void imx_print_silicon_rev(const char *cpu, int srev);
 #endif
-- 
1.7.1