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ARM: mach-shmobile: bonito: add PMIC settings

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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>
This commit is contained in:
Kuninori Morimoto 2011-11-10 18:47:07 -08:00 committed by Paul Mundt
parent b6b37e2505
commit e609b7cb7a
1 changed files with 53 additions and 0 deletions
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53
arch/arm/mach-shmobile/board-bonito.c
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@ -20,6 +20,7 @@
*/
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
@ -83,6 +84,56 @@ static void bonito_fpga_write(u32 offset, u16 val)
__raw_writew(val, 0xf0003000 + offset);
}
/*
* 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
*/
@ -154,6 +205,8 @@ static void __init bonito_init(void)
r8a7740_pinmux_init();
pmic_settings = pmic_do_2A;
/*
* core board settings
*/