/*
 *  linux/include/mfd/ucb1x00.h
 *
 *  Copyright (C) 2001 Russell King, All Rights Reserved.
 *
 * 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.
 */
#ifndef UCB1200_H
#define UCB1200_H

#include <linux/mfd/mcp.h>
#include <linux/gpio.h>
#include <linux/mutex.h>

#define UCB_IO_DATA	0x00
#define UCB_IO_DIR	0x01

#define UCB_IO_0		(1 << 0)
#define UCB_IO_1		(1 << 1)
#define UCB_IO_2		(1 << 2)
#define UCB_IO_3		(1 << 3)
#define UCB_IO_4		(1 << 4)
#define UCB_IO_5		(1 << 5)
#define UCB_IO_6		(1 << 6)
#define UCB_IO_7		(1 << 7)
#define UCB_IO_8		(1 << 8)
#define UCB_IO_9		(1 << 9)

#define UCB_IE_RIS	0x02
#define UCB_IE_FAL	0x03
#define UCB_IE_STATUS	0x04
#define UCB_IE_CLEAR	0x04
#define UCB_IE_ADC		(1 << 11)
#define UCB_IE_TSPX		(1 << 12)
#define UCB_IE_TSMX		(1 << 13)
#define UCB_IE_TCLIP		(1 << 14)
#define UCB_IE_ACLIP		(1 << 15)

#define UCB_IRQ_TSPX		12

#define UCB_TC_A	0x05
#define UCB_TC_A_LOOP		(1 << 7)	/* UCB1200 */
#define UCB_TC_A_AMPL		(1 << 7)	/* UCB1300 */

#define UCB_TC_B	0x06
#define UCB_TC_B_VOICE_ENA	(1 << 3)
#define UCB_TC_B_CLIP		(1 << 4)
#define UCB_TC_B_ATT		(1 << 6)
#define UCB_TC_B_SIDE_ENA	(1 << 11)
#define UCB_TC_B_MUTE		(1 << 13)
#define UCB_TC_B_IN_ENA		(1 << 14)
#define UCB_TC_B_OUT_ENA	(1 << 15)

#define UCB_AC_A	0x07
#define UCB_AC_B	0x08
#define UCB_AC_B_LOOP		(1 << 8)
#define UCB_AC_B_MUTE		(1 << 13)
#define UCB_AC_B_IN_ENA		(1 << 14)
#define UCB_AC_B_OUT_ENA	(1 << 15)

#define UCB_TS_CR	0x09
#define UCB_TS_CR_TSMX_POW	(1 << 0)
#define UCB_TS_CR_TSPX_POW	(1 << 1)
#define UCB_TS_CR_TSMY_POW	(1 << 2)
#define UCB_TS_CR_TSPY_POW	(1 << 3)
#define UCB_TS_CR_TSMX_GND	(1 << 4)
#define UCB_TS_CR_TSPX_GND	(1 << 5)
#define UCB_TS_CR_TSMY_GND	(1 << 6)
#define UCB_TS_CR_TSPY_GND	(1 << 7)
#define UCB_TS_CR_MODE_INT	(0 << 8)
#define UCB_TS_CR_MODE_PRES	(1 << 8)
#define UCB_TS_CR_MODE_POS	(2 << 8)
#define UCB_TS_CR_BIAS_ENA	(1 << 11)
#define UCB_TS_CR_TSPX_LOW	(1 << 12)
#define UCB_TS_CR_TSMX_LOW	(1 << 13)

#define UCB_ADC_CR	0x0a
#define UCB_ADC_SYNC_ENA	(1 << 0)
#define UCB_ADC_VREFBYP_CON	(1 << 1)
#define UCB_ADC_INP_TSPX	(0 << 2)
#define UCB_ADC_INP_TSMX	(1 << 2)
#define UCB_ADC_INP_TSPY	(2 << 2)
#define UCB_ADC_INP_TSMY	(3 << 2)
#define UCB_ADC_INP_AD0		(4 << 2)
#define UCB_ADC_INP_AD1		(5 << 2)
#define UCB_ADC_INP_AD2		(6 << 2)
#define UCB_ADC_INP_AD3		(7 << 2)
#define UCB_ADC_EXT_REF		(1 << 5)
#define UCB_ADC_START		(1 << 7)
#define UCB_ADC_ENA		(1 << 15)

#define UCB_ADC_DATA	0x0b
#define UCB_ADC_DAT_VAL		(1 << 15)
#define UCB_ADC_DAT(x)		(((x) & 0x7fe0) >> 5)

#define UCB_ID		0x0c
#define UCB_ID_1200		0x1004
#define UCB_ID_1300		0x1005
#define UCB_ID_TC35143          0x9712

#define UCB_MODE	0x0d
#define UCB_MODE_DYN_VFLAG_ENA	(1 << 12)
#define UCB_MODE_AUD_OFF_CAN	(1 << 13)

enum ucb1x00_reset {
	UCB_RST_PROBE,
	UCB_RST_REMOVE,
	UCB_RST_PROBE_FAIL,
};

struct ucb1x00_plat_data {
	void			(*reset)(enum ucb1x00_reset);
	int			gpio_base;
};

struct ucb1x00_irq {
	void *devid;
	void (*fn)(int, void *);
};

struct ucb1x00 {
	spinlock_t		lock;
	struct mcp		*mcp;
	unsigned int		irq;
	struct mutex		adc_mutex;
	spinlock_t		io_lock;
	u16			id;
	u16			io_dir;
	u16			io_out;
	u16			adc_cr;
	u16			irq_fal_enbl;
	u16			irq_ris_enbl;
	struct ucb1x00_irq	irq_handler[16];
	struct device		dev;
	struct list_head	node;
	struct list_head	devs;
	struct gpio_chip 	gpio;
};

struct ucb1x00_driver;

struct ucb1x00_dev {
	struct list_head	dev_node;
	struct list_head	drv_node;
	struct ucb1x00		*ucb;
	struct ucb1x00_driver	*drv;
	void			*priv;
};

struct ucb1x00_driver {
	struct list_head	node;
	struct list_head	devs;
	int	(*add)(struct ucb1x00_dev *dev);
	void	(*remove)(struct ucb1x00_dev *dev);
	int	(*suspend)(struct ucb1x00_dev *dev, pm_message_t state);
	int	(*resume)(struct ucb1x00_dev *dev);
};

#define classdev_to_ucb1x00(cd)	container_of(cd, struct ucb1x00, dev)

int ucb1x00_register_driver(struct ucb1x00_driver *);
void ucb1x00_unregister_driver(struct ucb1x00_driver *);

/**
 *	ucb1x00_clkrate - return the UCB1x00 SIB clock rate
 *	@ucb: UCB1x00 structure describing chip
 *
 *	Return the SIB clock rate in Hz.
 */
static inline unsigned int ucb1x00_clkrate(struct ucb1x00 *ucb)
{
	return mcp_get_sclk_rate(ucb->mcp);
}

/**
 *	ucb1x00_enable - enable the UCB1x00 SIB clock
 *	@ucb: UCB1x00 structure describing chip
 *
 *	Enable the SIB clock.  This can be called multiple times.
 */
static inline void ucb1x00_enable(struct ucb1x00 *ucb)
{
	mcp_enable(ucb->mcp);
}

/**
 *	ucb1x00_disable - disable the UCB1x00 SIB clock
 *	@ucb: UCB1x00 structure describing chip
 *
 *	Disable the SIB clock.  The SIB clock will only be disabled
 *	when the number of ucb1x00_enable calls match the number of
 *	ucb1x00_disable calls.
 */
static inline void ucb1x00_disable(struct ucb1x00 *ucb)
{
	mcp_disable(ucb->mcp);
}

/**
 *	ucb1x00_reg_write - write a UCB1x00 register
 *	@ucb: UCB1x00 structure describing chip
 *	@reg: UCB1x00 4-bit register index to write
 *	@val: UCB1x00 16-bit value to write
 *
 *	Write the UCB1x00 register @reg with value @val.  The SIB
 *	clock must be running for this function to return.
 */
static inline void ucb1x00_reg_write(struct ucb1x00 *ucb, unsigned int reg, unsigned int val)
{
	mcp_reg_write(ucb->mcp, reg, val);
}

/**
 *	ucb1x00_reg_read - read a UCB1x00 register
 *	@ucb: UCB1x00 structure describing chip
 *	@reg: UCB1x00 4-bit register index to write
 *
 *	Read the UCB1x00 register @reg and return its value.  The SIB
 *	clock must be running for this function to return.
 */
static inline unsigned int ucb1x00_reg_read(struct ucb1x00 *ucb, unsigned int reg)
{
	return mcp_reg_read(ucb->mcp, reg);
}
/**
 *	ucb1x00_set_audio_divisor - 
 *	@ucb: UCB1x00 structure describing chip
 *	@div: SIB clock divisor
 */
static inline void ucb1x00_set_audio_divisor(struct ucb1x00 *ucb, unsigned int div)
{
	mcp_set_audio_divisor(ucb->mcp, div);
}

/**
 *	ucb1x00_set_telecom_divisor -
 *	@ucb: UCB1x00 structure describing chip
 *	@div: SIB clock divisor
 */
static inline void ucb1x00_set_telecom_divisor(struct ucb1x00 *ucb, unsigned int div)
{
	mcp_set_telecom_divisor(ucb->mcp, div);
}

void ucb1x00_io_set_dir(struct ucb1x00 *ucb, unsigned int, unsigned int);
void ucb1x00_io_write(struct ucb1x00 *ucb, unsigned int, unsigned int);
unsigned int ucb1x00_io_read(struct ucb1x00 *ucb);

#define UCB_NOSYNC	(0)
#define UCB_SYNC	(1)

unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync);
void ucb1x00_adc_enable(struct ucb1x00 *ucb);
void ucb1x00_adc_disable(struct ucb1x00 *ucb);

/*
 * Which edges of the IRQ do you want to control today?
 */
#define UCB_RISING	(1 << 0)
#define UCB_FALLING	(1 << 1)

int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid);
void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid);

#endif