| |
| /* |
| * 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 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 suspend_mode; /* PRP in suspend mode */ |
| }; |
| |
| /* |
| * 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 |