include/power/pmic.h

/*
 *  Copyright (C) 2011-2012 Samsung Electronics
 *  Lukasz Majewski <l.majewski@samsung.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef __CORE_PMIC_H_
#define __CORE_PMIC_H_

#include <common.h>
#include <linux/list.h>
#include <i2c.h>

enum { PMIC_I2C, PMIC_SPI, };
enum { I2C_PMIC, I2C_NUM, };
enum { PMIC_READ, PMIC_WRITE, };
enum { PMIC_SENSOR_BYTE_ORDER_LITTLE, PMIC_SENSOR_BYTE_ORDER_BIG, };

struct p_i2c {
	unsigned char addr;
	unsigned char *buf;
	unsigned char tx_num;
};

struct p_spi {
	unsigned int cs;
	unsigned int mode;
	unsigned int bitlen;
	unsigned int clk;
	unsigned int flags;
	u32 (*prepare_tx)(u32 reg, u32 *val, u32 write);
};

struct pmic {
	const char *name;
	unsigned char bus;
	unsigned char interface;
	unsigned char sensor_byte_order;
	unsigned int number_of_regs;
	union hw {
		struct p_i2c i2c;
		struct p_spi spi;
	} hw;

	struct list_head list;
};

int pmic_init(unsigned char bus);
int pmic_dialog_init(unsigned char bus);
int check_reg(struct pmic *p, u32 reg);
struct pmic *pmic_alloc(void);
struct pmic *pmic_get(const char *s);
int pmic_probe(struct pmic *p);
int pmic_reg_read(struct pmic *p, u32 reg, u32 *val);
int pmic_reg_write(struct pmic *p, u32 reg, u32 val);
int pmic_set_output(struct pmic *p, u32 reg, int ldo, int on);

#define pmic_i2c_addr (p->hw.i2c.addr)
#define pmic_i2c_tx_num (p->hw.i2c.tx_num)

#define pmic_spi_bitlen (p->hw.spi.bitlen)
#define pmic_spi_flags (p->hw.spi.flags)

#endif /* __CORE_PMIC_H_ */