ARM: mach-shmobile: bonito: add PMIC settings
bonito board needs some settings by pmic which use i2c access.
It is dependent on the device to be used.
This patch adds standard settings.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/arm/mach-shmobile/board-bonito.c b/arch/arm/mach-shmobile/board-bonito.c
index efaa5fe..d78008b 100644
--- a/arch/arm/mach-shmobile/board-bonito.c
+++ b/arch/arm/mach-shmobile/board-bonito.c
@@ -20,6 +20,7 @@
*/
#include <linux/kernel.h>
+#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
@@ -84,6 +85,56 @@
}
/*
+* PMIC settings
+*
+* FIXME
+*
+* bonito board needs some settings by pmic which use i2c access.
+* pmic settings use device_initcall() here for use it.
+*/
+static __u8 *pmic_settings = NULL;
+static __u8 pmic_do_2A[] = {
+ 0x1C, 0x09,
+ 0x1A, 0x80,
+ 0xff, 0xff,
+};
+
+static int __init pmic_init(void)
+{
+ struct i2c_adapter *a = i2c_get_adapter(0);
+ struct i2c_msg msg;
+ __u8 buf[2];
+ int i, ret;
+
+ if (!pmic_settings)
+ return 0;
+ if (!a)
+ return 0;
+
+ msg.addr = 0x46;
+ msg.buf = buf;
+ msg.len = 2;
+ msg.flags = 0;
+
+ for (i = 0; ; i += 2) {
+ buf[0] = pmic_settings[i + 0];
+ buf[1] = pmic_settings[i + 1];
+
+ if ((0xff == buf[0]) && (0xff == buf[1]))
+ break;
+
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret < 0) {
+ pr_err("i2c transfer fail\n");
+ break;
+ }
+ }
+
+ return 0;
+}
+device_initcall(pmic_init);
+
+/*
* core board devices
*/
static struct platform_device *bonito_core_devices[] __initdata = {
@@ -154,6 +205,8 @@
r8a7740_pinmux_init();
+ pmic_settings = pmic_do_2A;
+
/*
* core board settings
*/