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Commit e609b7cb authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Paul Mundt
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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: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent b6b37e25

arch/arm/mach-shmobile/board-bonito.c

+53 −0
Original line number Diff line number Diff line
@@ -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

	 */