From cac5b1cc0d6daa0c0a037fd24a87d4db4e0a1456 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Wed, 26 Nov 2014 00:04:24 +0100
Subject: 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>
---
 arch/arm/cpu/armv7/sunxi/cpu_info.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'arch/arm/cpu/armv7/sunxi')

diff --git a/arch/arm/cpu/armv7/sunxi/cpu_info.c b/arch/arm/cpu/armv7/sunxi/cpu_info.c
index 5146dc422f..7a3a4ca81b 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 @@ int print_cpuinfo(void)
 	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
+}
-- 
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