path: root/drivers/i2c/chips/menelaus.c

/*
 * Copyright (C) 2004 Texas Instruments, Inc.
 *
 * Some parts based tps65010.c:
 * Copyright (C) 2004 Texas Instruments and
 * Copyright (C) 2004-2005 David Brownell
 *
 * Some parts based on tlv320aic24.c:
 * Copyright (C) by Kai Svahn <kai.svahn@nokia.com>
 *
 * Changes for interrupt handling and clean-up by
 * Tony Lindgren <tony@atomide.com> and Imre Deak <imre.deak@nokia.com>
 * Cleanup and generalized support for voltage setting by
 * Juha Yrjola
 * Added support for controlling VCORE and regulator sleep states,
 * Amit Kucheria <amit.kucheria@nokia.com>
 * Copyright (C) 2005, 2006 Nokia Corporation
 *
 * 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
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/rtc.h>
#include <linux/bcd.h>

#include <asm/mach/irq.h>

#include <asm/arch/gpio.h>
#include <asm/arch/menelaus.h>

#define DRIVER_NAME			"menelaus"

#define MENELAUS_I2C_ADDRESS		0x72

#define MENELAUS_REV			0x01
#define MENELAUS_VCORE_CTRL1		0x02
#define MENELAUS_VCORE_CTRL2		0x03
#define MENELAUS_VCORE_CTRL3		0x04
#define MENELAUS_VCORE_CTRL4		0x05
#define MENELAUS_VCORE_CTRL5		0x06
#define MENELAUS_DCDC_CTRL1		0x07
#define MENELAUS_DCDC_CTRL2		0x08
#define MENELAUS_DCDC_CTRL3		0x09
#define MENELAUS_LDO_CTRL1		0x0A
#define MENELAUS_LDO_CTRL2		0x0B
#define MENELAUS_LDO_CTRL3		0x0C
#define MENELAUS_LDO_CTRL4		0x0D
#define MENELAUS_LDO_CTRL5		0x0E
#define MENELAUS_LDO_CTRL6		0x0F
#define MENELAUS_LDO_CTRL7		0x10
#define MENELAUS_LDO_CTRL8		0x11
#define MENELAUS_SLEEP_CTRL1		0x12
#define MENELAUS_SLEEP_CTRL2		0x13
#define MENELAUS_DEVICE_OFF		0x14
#define MENELAUS_OSC_CTRL		0x15
#define MENELAUS_DETECT_CTRL		0x16
#define MENELAUS_INT_MASK1		0x17
#define MENELAUS_INT_MASK2		0x18
#define MENELAUS_INT_STATUS1		0x19
#define MENELAUS_INT_STATUS2		0x1A
#define MENELAUS_INT_ACK1		0x1B
#define MENELAUS_INT_ACK2		0x1C
#define MENELAUS_GPIO_CTRL		0x1D
#define MENELAUS_GPIO_IN		0x1E
#define MENELAUS_GPIO_OUT		0x1F
#define MENELAUS_BBSMS			0x20
#define MENELAUS_RTC_CTRL		0x21
#define MENELAUS_RTC_UPDATE		0x22
#define MENELAUS_RTC_SEC		0x23
#define MENELAUS_RTC_MIN		0x24
#define MENELAUS_RTC_HR			0x25
#define MENELAUS_RTC_DAY		0x26
#define MENELAUS_RTC_MON		0x27
#define MENELAUS_RTC_YR			0x28
#define MENELAUS_RTC_WKDAY		0x29
#define MENELAUS_RTC_AL_SEC		0x2A
#define MENELAUS_RTC_AL_MIN		0x2B
#define MENELAUS_RTC_AL_HR		0x2C
#define MENELAUS_RTC_AL_DAY		0x2D
#define MENELAUS_RTC_AL_MON		0x2E
#define MENELAUS_RTC_AL_YR		0x2F
#define MENELAUS_RTC_COMP_MSB		0x30
#define MENELAUS_RTC_COMP_LSB		0x31
#define MENELAUS_S1_PULL_EN		0x32
#define MENELAUS_S1_PULL_DIR		0x33
#define MENELAUS_S2_PULL_EN		0x34
#define MENELAUS_S2_PULL_DIR		0x35
#define MENELAUS_MCT_CTRL1		0x36
#define MENELAUS_MCT_CTRL2		0x37
#define MENELAUS_MCT_CTRL3		0x38
#define MENELAUS_MCT_PIN_ST		0x39
#define MENELAUS_DEBOUNCE1		0x3A

#define IH_MENELAUS_IRQS		12
#define MENELAUS_MMC_S1CD_IRQ		0	/* MMC slot 1 card change */
#define MENELAUS_MMC_S2CD_IRQ		1	/* MMC slot 2 card change */
#define MENELAUS_MMC_S1D1_IRQ		2	/* MMC DAT1 low in slot 1 */
#define MENELAUS_MMC_S2D1_IRQ		3	/* MMC DAT1 low in slot 2 */
#define MENELAUS_LOWBAT_IRQ		4	/* Low battery */
#define MENELAUS_HOTDIE_IRQ		5	/* Hot die detect */
#define MENELAUS_UVLO_IRQ		6	/* UVLO detect */
#define MENELAUS_TSHUT_IRQ		7	/* Thermal shutdown */
#define MENELAUS_RTCTMR_IRQ		8	/* RTC timer */
#define MENELAUS_RTCALM_IRQ		9	/* RTC alarm */
#define MENELAUS_RTCERR_IRQ		10	/* RTC error */
#define MENELAUS_PSHBTN_IRQ		11	/* Push button */
#define MENELAUS_RESERVED12_IRQ		12	/* Reserved */
#define MENELAUS_RESERVED13_IRQ		13	/* Reserved */
#define MENELAUS_RESERVED14_IRQ		14	/* Reserved */
#define MENELAUS_RESERVED15_IRQ		15	/* Reserved */

static void menelaus_work(struct work_struct *_menelaus);

struct menelaus_chip {
	struct mutex		lock;
	struct i2c_client	*client;
	struct work_struct	work;
#ifdef CONFIG_RTC_DRV_TWL92330
	struct rtc_device	*rtc;
	u8			rtc_control;
	unsigned		uie:1;
#endif
	unsigned		vcore_hw_mode:1;
	u8			mask1, mask2;
	void			(*handlers[16])(struct menelaus_chip *);
	void			(*mmc_callback)(void *data, u8 mask);
	void			*mmc_callback_data;
};

static struct menelaus_chip *the_menelaus;

static int menelaus_write_reg(int reg, u8 value)
{
	int val = i2c_smbus_write_byte_data