[net-next-2.6.git] / include / linux / wm97xx.h


/*
 * Register bits and API for Wolfson WM97xx series of codecs
 */

#ifndef _LINUX_WM97XX_H
#define _LINUX_WM97XX_H

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/input.h>	/* Input device layer */
#include <linux/platform_device.h>

/*
 * WM97xx variants
 */
#define	WM97xx_GENERIC			0x0000
#define	WM97xx_WM1613			0x1613

/*
 * WM97xx AC97 Touchscreen registers
 */
#define AC97_WM97XX_DIGITISER1		0x76
#define AC97_WM97XX_DIGITISER2		0x78
#define AC97_WM97XX_DIGITISER_RD 	0x7a
#define AC97_WM9713_DIG1		0x74
#define AC97_WM9713_DIG2		AC97_WM97XX_DIGITISER1
#define AC97_WM9713_DIG3		AC97_WM97XX_DIGITISER2

/*
 * WM97xx register bits
 */
#define WM97XX_POLL		0x8000	/* initiate a polling measurement */
#define WM97XX_ADCSEL_X		0x1000	/* x coord measurement */
#define WM97XX_ADCSEL_Y		0x2000	/* y coord measurement */
#define WM97XX_ADCSEL_PRES	0x3000	/* pressure measurement */
#define WM97XX_ADCSEL_MASK	0x7000
#define WM97XX_COO		0x0800	/* enable coordinate mode */
#define WM97XX_CTC		0x0400	/* enable continuous mode */
#define WM97XX_CM_RATE_93	0x0000	/* 93.75Hz continuous rate */
#define WM97XX_CM_RATE_187	0x0100	/* 187.5Hz continuous rate */
#define WM97XX_CM_RATE_375	0x0200	/* 375Hz continuous rate */
#define WM97XX_CM_RATE_750	0x0300	/* 750Hz continuous rate */
#define WM97XX_CM_RATE_8K	0x00f0	/* 8kHz continuous rate */
#define WM97XX_CM_RATE_12K	0x01f0	/* 12kHz continuous rate */
#define WM97XX_CM_RATE_24K	0x02f0	/* 24kHz continuous rate */
#define WM97XX_CM_RATE_48K	0x03f0	/* 48kHz continuous rate */
#define WM97XX_CM_RATE_MASK	0x03f0
#define WM97XX_RATE(i)		(((i & 3) << 8) | ((i & 4) ? 0xf0 : 0))
#define WM97XX_DELAY(i)		((i << 4) & 0x00f0)	/* sample delay times */
#define WM97XX_DELAY_MASK	0x00f0
#define WM97XX_SLEN		0x0008	/* slot read back enable */
#define WM97XX_SLT(i)		((i - 5) & 0x7)	/* panel slot (5-11) */
#define WM97XX_SLT_MASK		0x0007
#define WM97XX_PRP_DETW		0x4000	/* detect on, digitise off, wake */
#define WM97XX_PRP_DET		0x8000	/* detect on, digitise off, no wake */
#define WM97XX_PRP_DET_DIG	0xc000	/* setect on, digitise on */
#define WM97XX_RPR		0x2000	/* wake up on pen down */
#define WM97XX_PEN_DOWN		0x8000	/* pen is down */
#define WM97XX_ADCSRC_MASK	0x7000	/* ADC source mask */

#define WM97XX_AUX_ID1		0x8001
#define WM97XX_AUX_ID2		0x8002
#define WM97XX_AUX_ID3		0x8003
#define WM97XX_AUX_ID4		0x8004


/* WM9712 Bits */
#define WM9712_45W		0x1000	/* set for 5-wire touchscreen */
#define WM9712_PDEN		0x0800	/* measure only when pen down */
#define WM9712_WAIT		0x0200	/* wait until adc is read before next sample */
#define WM9712_PIL		0x0100	/* current used for pressure measurement. set 400uA else 200uA */
#define WM9712_MASK_HI		0x0040	/* hi on mask pin (47) stops conversions */
#define WM9712_MASK_EDGE	0x0080	/* rising/falling edge on pin delays sample */
#define	WM9712_MASK_SYNC	0x00c0	/* rising/falling edge on mask initiates sample */
#define WM9712_RPU(i)		(i&0x3f)	/* internal pull up on pen detect (64k / rpu) */
#define WM9712_PD(i)		(0x1 << i)	/* power management */

/* WM9712 Registers */
#define AC97_WM9712_POWER	0x24
#define AC97_WM9712_REV		0x58

/* WM9705 Bits */
#define WM9705_PDEN		0x1000	/* measure only when pen is down */
#define WM9705_PINV		0x0800	/* inverts sense of pen down output */
#define WM9705_BSEN		0x0400	/* BUSY flag enable, pin47 is 1 when busy */
#define WM9705_BINV		0x0200	/* invert BUSY (pin47) output */
#define WM9705_WAIT		0x0100	/* wait until adc is read before next sample */
#define WM9705_PIL		0x0080	/* current used for pressure measurement. set 400uA else 200uA */
#define WM9705_PHIZ		0x0040	/* set PHONE and PCBEEP inputs to high impedance */
#define WM9705_MASK_HI		0x0010	/* hi on mask stops conversions */
#define WM9705_MASK_EDGE	0x0020	/* rising/falling edge on pin delays sample */
#define	WM9705_MASK_SYNC	0x0030	/* rising/falling edge on mask initiates sample */
#define WM9705_PDD(i)		(i & 0x000f)	/* pen detect comparator threshold */


/* WM9713 Bits */
#define WM9713_PDPOL		0x0400	/* Pen down polarity */
#define WM9713_POLL		0x0200	/* initiate a polling measurement */
#define WM9713_CTC		0x0100	/* enable continuous mode */
#define WM9713_ADCSEL_X		0x0002	/* X measurement */
#define WM9713_ADCSEL_Y		0x0004	/* Y measurement */
#define WM9713_ADCSEL_PRES	0x0008	/* Pressure measurement */
#define WM9713_COO		0x0001	/* enable coordinate mode */
#define WM9713_45W		0x1000  /* set for 5 wire panel */
#define WM9713_PDEN		0x0800	/* measure only when pen down */
#define WM9713_ADCSEL_MASK	0x00fe	/* ADC selection mask */
#define WM9713_WAIT		0x0200	/* coordinate wait */

/* AUX ADC ID's */
#define TS_COMP1		0x0
#define TS_COMP2		0x1
#define TS_BMON			0x2
#define TS_WIPER		0x3

/* ID numbers */
#define WM97XX_ID1		0x574d
#define WM9712_ID2		0x4c12
#define WM9705_ID2		0x4c05
#define WM9713_ID2		0x4c13

/* Codec GPIO's */
#define WM97XX_MAX_GPIO		16
#define WM97XX_GPIO_1		(1 << 1)
#define WM97XX_GPIO_2		(1 << 2)
#define WM97XX_GPIO_3		(1 << 3)
#define WM97XX_GPIO_4		(1 << 4)
#define WM97XX_GPIO_5		(1 << 5)
#define WM97XX_GPIO_6		(1 << 6)
#define WM97XX_GPIO_7		(1 << 7)
#define WM97XX_GPIO_8		(1 << 8)
#define WM97XX_GPIO_9		(1 << 9)
#define WM97XX_GPIO_10		(1 << 10)
#define WM97XX_GPIO_11		(1 << 11)
#define WM97XX_GPIO_12		(1 << 12)
#define WM97XX_GPIO_13		(1 << 13)
#define WM97XX_GPIO_14		(1 << 14)
#define WM97XX_GPIO_15		(1 << 15)


#define AC97_LINK_FRAME		21	/* time in uS for AC97 link frame */


/*---------------- Return codes from sample reading functions ---------------*/

/* More data is available; call the sample gathering function again */
#define RC_AGAIN			0x00000001
/* The returned sample is valid */
#define RC_VALID			0x00000002
/* The pen is up (the first RC_VALID without RC_PENUP means pen is down) */
#define RC_PENUP			0x00000004
/* The pen is down (RC_VALID implies RC_PENDOWN, but sometimes it is helpful
   to tell the handler that the pen is down but we don't know yet his coords,
   so the handler should not sleep or wait for pendown irq) */
#define RC_PENDOWN			0x00000008

/*
 * The wm97xx driver provides a private API for writing platform-specific
 * drivers.
 */

/* The structure used to return arch specific sampled data into */
struct wm97xx_data {
    int x;
    int y;
    int p;
};

/*
 * Codec GPIO status
 */
enum wm97xx_gpio_status {
    WM97XX_GPIO_HIGH,
    WM97XX_GPIO_LOW
};

/*
 * Codec GPIO direction
 */
enum wm97xx_gpio_dir {
    WM97XX_GPIO_IN,
    WM97XX_GPIO_OUT
};

/*
 * Codec GPIO polarity
 */
enum wm97xx_gpio_pol {
    WM97XX_GPIO_POL_HIGH,
    WM97XX_GPIO_POL_LOW
};

/*
 * Codec GPIO sticky
 */
enum wm97xx_gpio_sticky {
    WM97XX_GPIO_STICKY,
    WM97XX_GPIO_NOTSTICKY
};

/*
 * Codec GPIO wake
 */
enum wm97xx_gpio_wake {
    WM97XX_GPIO_WAKE,
    WM97XX_GPIO_NOWAKE
};

/*
 * Digitiser ioctl commands
 */
#define WM97XX_DIG_START	0x1
#define WM97XX_DIG_STOP		0x2
#define WM97XX_PHY_INIT		0x3
#define WM97XX_AUX_PREPARE	0x4
#define WM97XX_DIG_RESTORE	0x5

struct wm97xx;

extern struct wm97xx_codec_drv wm9705_codec;
extern struct wm97xx_codec_drv wm9712_codec;
extern struct wm97xx_codec_drv wm9713_codec;

/*
 * Codec driver interface - allows mapping to WM9705/12/13 and newer codecs
 */
struct wm97xx_codec_drv {
	u16 id;
	char *name;

	/* read 1 sample */
	int (*poll_sample) (struct wm97xx *, int adcsel, int *sample);

	/* read X,Y,[P] in poll */
	int (*poll_touch) (struct wm97xx *, struct wm97xx_data *);

	int (*acc_enable) (struct wm97xx *, int enable);
	void (*phy_init) (struct wm97xx *);
	void (*dig_enable) (struct wm97xx *, int enable);
	void (*dig_restore) (struct wm97xx *);
	void (*aux_prepare) (struct wm97xx *);
};


/* Machine specific and accelerated touch operations */
struct wm97xx_mach_ops {

	/* accelerated touch readback - coords are transmited on AC97 link */
	int acc_enabled;
	void (*acc_pen_up) (struct wm97xx *);
	int (*acc_pen_down) (struct wm97xx *);
	int (*acc_startup) (struct wm97xx *);
	void (*acc_shutdown) (struct wm97xx *);

	/* interrupt mask control - required for accelerated operation */
	void (*irq_enable) (struct wm97xx *, int enable);

	/* GPIO pin used for accelerated operation */
	int irq_gpio;

	/* pre and post sample - can be used to minimise any analog noise */
	void (*pre_sample) (int);  /* function to run before sampling */
	void (*post_sample) (int);  /* function to run after sampling */
};

struct wm97xx {
	u16 dig[3], id, gpio[6], misc;	/* Cached codec registers */
	u16 dig_save[3];		/* saved during aux reading */
	struct wm97xx_codec_drv *codec;	/* attached codec driver*/
	struct input_dev *input_dev;	/* touchscreen input device */
	struct snd_ac97 *ac97;		/* ALSA codec access */
	struct device *dev;		/* ALSA device */
	struct platform_device *battery_dev;
	struct platform_device *touch_dev;
	struct wm97xx_mach_ops *mach_ops;
	struct mutex codec_mutex;
	struct delayed_work ts_reader;  /* Used to poll touchscreen */
	unsigned long ts_reader_interval; /* Current interval for timer */
	unsigned long ts_reader_min_interval; /* Minimum interval */
	unsigned int pen_irq;		/* Pen IRQ number in use */
	struct workqueue_struct *ts_workq;
	struct work_struct pen_event_work;
	u16 acc_slot;			/* AC97 slot used for acc touch data */
	u16 acc_rate;			/* acc touch data rate */
	unsigned pen_is_down:1;		/* Pen is down */
	unsigned aux_waiting:1;		/* aux measurement waiting */
	unsigned pen_probably_down:1;	/* used in polling mode */
	u16 variant;			/* WM97xx chip variant */
	u16 suspend_mode;               /* PRP in suspend mode */
};

struct wm97xx_batt_pdata {
	int	batt_aux;
	int	temp_aux;
	int	charge_gpio;
	int	min_voltage;
	int	max_voltage;
	int	batt_div;
	int	batt_mult;
	int	temp_div;
	int	temp_mult;
	int	batt_tech;
	char	*batt_name;
};

struct wm97xx_pdata {
	struct wm97xx_batt_pdata	*batt_pdata;	/* battery data */
};

/*
 * Codec GPIO access (not supported on WM9705)
 * This can be used to set/get codec GPIO and Virtual GPIO status.
 */
enum wm97xx_gpio_status wm97xx_get_gpio(struct wm97xx *wm, u32 gpio);
void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio,
			  enum wm97xx_gpio_status status);
void wm97xx_config_gpio(struct wm97xx *wm, u32 gpio,
				     enum wm97xx_gpio_dir dir,
				     enum wm97xx_gpio_pol pol,
				     enum wm97xx_gpio_sticky sticky,
				     enum wm97xx_gpio_wake wake);

void wm97xx_set_suspend_mode(struct wm97xx *wm, u16 mode);

/* codec AC97 IO access */
int wm97xx_reg_read(struct wm97xx *wm, u16 reg);
void wm97xx_reg_write(struct wm97xx *wm, u16 reg, u16 val);

/* aux adc readback */
int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel);

/* machine ops */
int wm97xx_register_mach_ops(struct wm97xx *, struct wm97xx_mach_ops *);
void wm97xx_unregister_mach_ops(struct wm97xx *);

#endif
Commit	Line	Data
febf1dff MB	1
	2	/*
	3	* Register bits and API for Wolfson WM97xx series of codecs
	4	*/
	5
	6	#ifndef _LINUX_WM97XX_H
	7	#define _LINUX_WM97XX_H
	8
	9	#include <sound/core.h>
	10	#include <sound/pcm.h>
	11	#include <sound/ac97_codec.h>
	12	#include <sound/initval.h>
	13	#include <linux/types.h>
	14	#include <linux/list.h>
	15	#include <linux/input.h> /* Input device layer */
	16	#include <linux/platform_device.h>
	17
99fde513 MV	18	/*
	19	* WM97xx variants
	20	*/
	21	#define WM97xx_GENERIC 0x0000
	22	#define WM97xx_WM1613 0x1613
	23
febf1dff MB	24	/*
	25	* WM97xx AC97 Touchscreen registers
	26	*/
	27	#define AC97_WM97XX_DIGITISER1 0x76
	28	#define AC97_WM97XX_DIGITISER2 0x78
	29	#define AC97_WM97XX_DIGITISER_RD 0x7a
	30	#define AC97_WM9713_DIG1 0x74
	31	#define AC97_WM9713_DIG2 AC97_WM97XX_DIGITISER1
	32	#define AC97_WM9713_DIG3 AC97_WM97XX_DIGITISER2
	33
	34	/*
	35	* WM97xx register bits
	36	*/
	37	#define WM97XX_POLL 0x8000 /* initiate a polling measurement */
	38	#define WM97XX_ADCSEL_X 0x1000 /* x coord measurement */
	39	#define WM97XX_ADCSEL_Y 0x2000 /* y coord measurement */
	40	#define WM97XX_ADCSEL_PRES 0x3000 /* pressure measurement */
	41	#define WM97XX_ADCSEL_MASK 0x7000
	42	#define WM97XX_COO 0x0800 /* enable coordinate mode */
	43	#define WM97XX_CTC 0x0400 /* enable continuous mode */
	44	#define WM97XX_CM_RATE_93 0x0000 /* 93.75Hz continuous rate */
	45	#define WM97XX_CM_RATE_187 0x0100 /* 187.5Hz continuous rate */
	46	#define WM97XX_CM_RATE_375 0x0200 /* 375Hz continuous rate */
	47	#define WM97XX_CM_RATE_750 0x0300 /* 750Hz continuous rate */
	48	#define WM97XX_CM_RATE_8K 0x00f0 /* 8kHz continuous rate */
	49	#define WM97XX_CM_RATE_12K 0x01f0 /* 12kHz continuous rate */
	50	#define WM97XX_CM_RATE_24K 0x02f0 /* 24kHz continuous rate */
	51	#define WM97XX_CM_RATE_48K 0x03f0 /* 48kHz continuous rate */
	52	#define WM97XX_CM_RATE_MASK 0x03f0
	53	#define WM97XX_RATE(i) (((i & 3) << 8) \| ((i & 4) ? 0xf0 : 0))
	54	#define WM97XX_DELAY(i) ((i << 4) & 0x00f0) /* sample delay times */
	55	#define WM97XX_DELAY_MASK 0x00f0
	56	#define WM97XX_SLEN 0x0008 /* slot read back enable */
	57	#define WM97XX_SLT(i) ((i - 5) & 0x7) /* panel slot (5-11) */
	58	#define WM97XX_SLT_MASK 0x0007
	59	#define WM97XX_PRP_DETW 0x4000 /* detect on, digitise off, wake */
	60	#define WM97XX_PRP_DET 0x8000 /* detect on, digitise off, no wake */
	61	#define WM97XX_PRP_DET_DIG 0xc000 /* setect on, digitise on */
	62	#define WM97XX_RPR 0x2000 /* wake up on pen down */
	63	#define WM97XX_PEN_DOWN 0x8000 /* pen is down */
	64	#define WM97XX_ADCSRC_MASK 0x7000 /* ADC source mask */
	65
	66	#define WM97XX_AUX_ID1 0x8001
	67	#define WM97XX_AUX_ID2 0x8002
	68	#define WM97XX_AUX_ID3 0x8003
	69	#define WM97XX_AUX_ID4 0x8004
	70
	71
	72	/* WM9712 Bits */
	73	#define WM9712_45W 0x1000 /* set for 5-wire touchscreen */
	74	#define WM9712_PDEN 0x0800 /* measure only when pen down */
	75	#define WM9712_WAIT 0x0200 /* wait until adc is read before next sample */
	76	#define WM9712_PIL 0x0100 /* current used for pressure measurement. set 400uA else 200uA */
	77	#define WM9712_MASK_HI 0x0040 /* hi on mask pin (47) stops conversions */
	78	#define WM9712_MASK_EDGE 0x0080 /* rising/falling edge on pin delays sample */
	79	#define WM9712_MASK_SYNC 0x00c0 /* rising/falling edge on mask initiates sample */
	80	#define WM9712_RPU(i) (i&0x3f) /* internal pull up on pen detect (64k / rpu) */
	81	#define WM9712_PD(i) (0x1 << i) /* power management */
	82
	83	/* WM9712 Registers */
	84	#define AC97_WM9712_POWER 0x24
	85	#define AC97_WM9712_REV 0x58
	86
	87	/* WM9705 Bits */
88	#define WM9705_PDEN 0x1000 /* measure only when pen is down */
89	#define WM9705_PINV 0x0800 /* inverts sense of pen down output */
90	#define WM9705_BSEN 0x0400 /* BUSY flag enable, pin47 is 1 when busy */
91	#define WM9705_BINV 0x0200 /* invert BUSY (pin47) output */
92	#define WM9705_WAIT 0x0100 /* wait until adc is read before next sample */
93	#define WM9705_PIL 0x0080 /* current used for pressure measurement. set 400uA else 200uA */
94	#define WM9705_PHIZ 0x0040 /* set PHONE and PCBEEP inputs to high impedance */
95	#define WM9705_MASK_HI 0x0010 /* hi on mask stops conversions */
96	#define WM9705_MASK_EDGE 0x0020 /* rising/falling edge on pin delays sample */
97	#define WM9705_MASK_SYNC 0x0030 /* rising/falling edge on mask initiates sample */
98	#define WM9705_PDD(i) (i & 0x000f) /* pen detect comparator threshold */
99
100
101	/* WM9713 Bits */
102	#define WM9713_PDPOL 0x0400 /* Pen down polarity */
103	#define WM9713_POLL 0x0200 /* initiate a polling measurement */
104	#define WM9713_CTC 0x0100 /* enable continuous mode */
105	#define WM9713_ADCSEL_X 0x0002 /* X measurement */
106	#define WM9713_ADCSEL_Y 0x0004 /* Y measurement */
107	#define WM9713_ADCSEL_PRES 0x0008 /* Pressure measurement */
108	#define WM9713_COO 0x0001 /* enable coordinate mode */
43f83a8f	109	#define WM9713_45W 0x1000 /* set for 5 wire panel */
febf1dff MB	110	#define WM9713_PDEN 0x0800 /* measure only when pen down */
	111	#define WM9713_ADCSEL_MASK 0x00fe /* ADC selection mask */
	112	#define WM9713_WAIT 0x0200 /* coordinate wait */
	113
	114	/* AUX ADC ID's */
	115	#define TS_COMP1 0x0
	116	#define TS_COMP2 0x1
	117	#define TS_BMON 0x2
	118	#define TS_WIPER 0x3
	119
	120	/* ID numbers */
	121	#define WM97XX_ID1 0x574d
	122	#define WM9712_ID2 0x4c12
	123	#define WM9705_ID2 0x4c05
	124	#define WM9713_ID2 0x4c13
	125
	126	/* Codec GPIO's */
	127	#define WM97XX_MAX_GPIO 16
	128	#define WM97XX_GPIO_1 (1 << 1)
	129	#define WM97XX_GPIO_2 (1 << 2)
	130	#define WM97XX_GPIO_3 (1 << 3)
	131	#define WM97XX_GPIO_4 (1 << 4)
	132	#define WM97XX_GPIO_5 (1 << 5)
	133	#define WM97XX_GPIO_6 (1 << 6)
	134	#define WM97XX_GPIO_7 (1 << 7)
	135	#define WM97XX_GPIO_8 (1 << 8)
	136	#define WM97XX_GPIO_9 (1 << 9)
	137	#define WM97XX_GPIO_10 (1 << 10)
	138	#define WM97XX_GPIO_11 (1 << 11)
	139	#define WM97XX_GPIO_12 (1 << 12)
	140	#define WM97XX_GPIO_13 (1 << 13)
	141	#define WM97XX_GPIO_14 (1 << 14)
	142	#define WM97XX_GPIO_15 (1 << 15)
	143
	144
	145	#define AC97_LINK_FRAME 21 /* time in uS for AC97 link frame */
	146
	147
	148	/---------------- Return codes from sample reading functions ---------------/
	149
	150	/* More data is available; call the sample gathering function again */
	151	#define RC_AGAIN 0x00000001
	152	/* The returned sample is valid */
	153	#define RC_VALID 0x00000002
	154	/* The pen is up (the first RC_VALID without RC_PENUP means pen is down) */
	155	#define RC_PENUP 0x00000004
	156	/* The pen is down (RC_VALID implies RC_PENDOWN, but sometimes it is helpful
	157	to tell the handler that the pen is down but we don't know yet his coords,
	158	so the handler should not sleep or wait for pendown irq) */
	159	#define RC_PENDOWN 0x00000008
	160
	161	/*
	162	* The wm97xx driver provides a private API for writing platform-specific
	163	* drivers.
	164	*/
	165
	166	/* The structure used to return arch specific sampled data into */
	167	struct wm97xx_data {
	168	int x;
	169	int y;
	170	int p;
	171	};
	172
	173	/*
174	* Codec GPIO status
175	*/
176	enum wm97xx_gpio_status {
177	WM97XX_GPIO_HIGH,
178	WM97XX_GPIO_LOW
179	};
180
181	/*
182	* Codec GPIO direction
183	*/
184	enum wm97xx_gpio_dir {
185	WM97XX_GPIO_IN,
186	WM97XX_GPIO_OUT
187	};
188
189	/*
190	* Codec GPIO polarity
191	*/
192	enum wm97xx_gpio_pol {
193	WM97XX_GPIO_POL_HIGH,
194	WM97XX_GPIO_POL_LOW
195	};
196
197	/*
198	* Codec GPIO sticky
199	*/
200	enum wm97xx_gpio_sticky {
201	WM97XX_GPIO_STICKY,
202	WM97XX_GPIO_NOTSTICKY
203	};
204
205	/*
206	* Codec GPIO wake
207	*/
208	enum wm97xx_gpio_wake {
209	WM97XX_GPIO_WAKE,
210	WM97XX_GPIO_NOWAKE
211	};
212
213	/*
214	* Digitiser ioctl commands
215	*/
216	#define WM97XX_DIG_START 0x1
217	#define WM97XX_DIG_STOP 0x2
218	#define WM97XX_PHY_INIT 0x3
219	#define WM97XX_AUX_PREPARE 0x4
220	#define WM97XX_DIG_RESTORE 0x5
221
222	struct wm97xx;
223
224	extern struct wm97xx_codec_drv wm9705_codec;
225	extern struct wm97xx_codec_drv wm9712_codec;
226	extern struct wm97xx_codec_drv wm9713_codec;
227
228	/*
229	* Codec driver interface - allows mapping to WM9705/12/13 and newer codecs
230	*/
231	struct wm97xx_codec_drv {
232	u16 id;
233	char *name;
234
235	/* read 1 sample */
236	int (poll_sample) (struct wm97xx , int adcsel, int *sample);
237
238	/* read X,Y,[P] in poll */
239	int (poll_touch) (struct wm97xx , struct wm97xx_data *);
240
241	int (acc_enable) (struct wm97xx , int enable);
242	void (phy_init) (struct wm97xx );
243	void (dig_enable) (struct wm97xx , int enable);
244	void (dig_restore) (struct wm97xx );
245	void (aux_prepare) (struct wm97xx );
246	};
247
248
249	/* Machine specific and accelerated touch operations */
250	struct wm97xx_mach_ops {
251
252	/* accelerated touch readback - coords are transmited on AC97 link */
253	int acc_enabled;
254	void (acc_pen_up) (struct wm97xx );
255	int (acc_pen_down) (struct wm97xx );
256	int (acc_startup) (struct wm97xx );
257	void (acc_shutdown) (struct wm97xx );
258
259	/* interrupt mask control - required for accelerated operation */
260	void (irq_enable) (struct wm97xx , int enable);
261
262	/* GPIO pin used for accelerated operation */
263	int irq_gpio;
264
265	/* pre and post sample - can be used to minimise any analog noise */
266	void (pre_sample) (int); / function to run before sampling */
267	void (post_sample) (int); / function to run after sampling */
268	};
269
270	struct wm97xx {
271	u16 dig[3], id, gpio[6], misc; /* Cached codec registers */
272	u16 dig_save[3]; /* saved during aux reading */
273	struct wm97xx_codec_drv codec; / attached codec driver*/
274	struct input_dev input_dev; / touchscreen input device */
275	struct snd_ac97 ac97; / ALSA codec access */
276	struct device dev; / ALSA device */
277	struct platform_device *battery_dev;
278	struct platform_device *touch_dev;
279	struct wm97xx_mach_ops *mach_ops;
280	struct mutex codec_mutex;
281	struct delayed_work ts_reader; /* Used to poll touchscreen */
282	unsigned long ts_reader_interval; /* Current interval for timer */
283	unsigned long ts_reader_min_interval; /* Minimum interval */
284	unsigned int pen_irq; /* Pen IRQ number in use */
285	struct workqueue_struct *ts_workq;
286	struct work_struct pen_event_work;
287	u16 acc_slot; /* AC97 slot used for acc touch data */
288	u16 acc_rate; /* acc touch data rate */
289	unsigned pen_is_down:1; /* Pen is down */
290	unsigned aux_waiting:1; /* aux measurement waiting */
291	unsigned pen_probably_down:1; /* used in polling mode */
99fde513	292	u16 variant; /* WM97xx chip variant */
34d27853	293	u16 suspend_mode; /* PRP in suspend mode */
febf1dff MB	294	};
febf1dff MB	295
b8bdc1d0 MV	296	struct wm97xx_batt_pdata {
	297	int batt_aux;
	298	int temp_aux;
	299	int charge_gpio;
	300	int min_voltage;
	301	int max_voltage;
	302	int batt_div;
	303	int batt_mult;
	304	int temp_div;
	305	int temp_mult;
	306	int batt_tech;
	307	char *batt_name;
	308	};
	309
	310	struct wm97xx_pdata {
	311	struct wm97xx_batt_pdata batt_pdata; / battery data */
	312	};
	313
febf1dff MB	314	/*
	315	* Codec GPIO access (not supported on WM9705)
	316	* This can be used to set/get codec GPIO and Virtual GPIO status.
	317	*/
	318	enum wm97xx_gpio_status wm97xx_get_gpio(struct wm97xx *wm, u32 gpio);
	319	void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio,
	320	enum wm97xx_gpio_status status);
	321	void wm97xx_config_gpio(struct wm97xx *wm, u32 gpio,
	322	enum wm97xx_gpio_dir dir,
	323	enum wm97xx_gpio_pol pol,
	324	enum wm97xx_gpio_sticky sticky,
	325	enum wm97xx_gpio_wake wake);
	326
34d27853 MB	327	void wm97xx_set_suspend_mode(struct wm97xx *wm, u16 mode);
34d27853 MB	328
febf1dff MB	329	/* codec AC97 IO access */
	330	int wm97xx_reg_read(struct wm97xx *wm, u16 reg);
	331	void wm97xx_reg_write(struct wm97xx *wm, u16 reg, u16 val);
	332
	333	/* aux adc readback */
	334	int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel);
	335
	336	/* machine ops */
	337	int wm97xx_register_mach_ops(struct wm97xx , struct wm97xx_mach_ops );
	338	void wm97xx_unregister_mach_ops(struct wm97xx *);
	339
	340	#endif