338 lines
11 KiB
C
338 lines
11 KiB
C
|
|
||
|
|
/*
|
||
|
|
* 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_AUX_ID1 0x4000
|
||
|
|
#define WM97XX_AUX_ID2 0x5000
|
||
|
|
#define WM97XX_AUX_ID3 0x6000
|
||
|
|
#define WM97XX_AUX_ID4 0x7000
|
||
|
|
#define WM97XX_ADCSEL_MASK 0x7000 /* ADC selection mask */
|
||
|
|
#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 */
|
||
|
|
|
||
|
|
/* 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
|