sunxi: Add sunxi_get_sid helper function
On sun6i the SID is stored in the pmic, rather then in the SoC itself,
add a helper function to abstract this away.
This makes our MAC address generation code also work on sun6i.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/arch/arm/cpu/armv7/sunxi/cpu_info.c b/arch/arm/cpu/armv7/sunxi/cpu_info.c
index 5146dc4..7a3a4ca 100644
--- a/arch/arm/cpu/armv7/sunxi/cpu_info.c
+++ b/arch/arm/cpu/armv7/sunxi/cpu_info.c
@@ -10,6 +10,7 @@
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/clock.h>
+#include <axp221.h>
#ifdef CONFIG_MACH_SUN6I
int sunxi_get_ss_bonding_id(void)
@@ -72,3 +73,21 @@
return 0;
}
#endif
+
+int sunxi_get_sid(unsigned int *sid)
+{
+#ifdef CONFIG_MACH_SUN6I
+#ifdef CONFIG_AXP221_POWER
+ return axp221_get_sid(sid);
+#else
+ return -ENODEV;
+#endif
+#else
+ int i;
+
+ for (i = 0; i< 4; i++)
+ sid[i] = readl(SUNXI_SID_BASE + 4 * i);
+
+ return 0;
+#endif
+}