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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 */ | |
c8f20525 WS |
41 | #define WM97XX_AUX_ID1 0x4000 |
42 | #define WM97XX_AUX_ID2 0x5000 | |
43 | #define WM97XX_AUX_ID3 0x6000 | |
44 | #define WM97XX_AUX_ID4 0x7000 | |
2456689b | 45 | #define WM97XX_ADCSEL_MASK 0x7000 /* ADC selection mask */ |
febf1dff MB |
46 | #define WM97XX_COO 0x0800 /* enable coordinate mode */ |
47 | #define WM97XX_CTC 0x0400 /* enable continuous mode */ | |
48 | #define WM97XX_CM_RATE_93 0x0000 /* 93.75Hz continuous rate */ | |
49 | #define WM97XX_CM_RATE_187 0x0100 /* 187.5Hz continuous rate */ | |
50 | #define WM97XX_CM_RATE_375 0x0200 /* 375Hz continuous rate */ | |
51 | #define WM97XX_CM_RATE_750 0x0300 /* 750Hz continuous rate */ | |
52 | #define WM97XX_CM_RATE_8K 0x00f0 /* 8kHz continuous rate */ | |
53 | #define WM97XX_CM_RATE_12K 0x01f0 /* 12kHz continuous rate */ | |
54 | #define WM97XX_CM_RATE_24K 0x02f0 /* 24kHz continuous rate */ | |
55 | #define WM97XX_CM_RATE_48K 0x03f0 /* 48kHz continuous rate */ | |
56 | #define WM97XX_CM_RATE_MASK 0x03f0 | |
57 | #define WM97XX_RATE(i) (((i & 3) << 8) | ((i & 4) ? 0xf0 : 0)) | |
58 | #define WM97XX_DELAY(i) ((i << 4) & 0x00f0) /* sample delay times */ | |
59 | #define WM97XX_DELAY_MASK 0x00f0 | |
60 | #define WM97XX_SLEN 0x0008 /* slot read back enable */ | |
61 | #define WM97XX_SLT(i) ((i - 5) & 0x7) /* panel slot (5-11) */ | |
62 | #define WM97XX_SLT_MASK 0x0007 | |
63 | #define WM97XX_PRP_DETW 0x4000 /* detect on, digitise off, wake */ | |
64 | #define WM97XX_PRP_DET 0x8000 /* detect on, digitise off, no wake */ | |
65 | #define WM97XX_PRP_DET_DIG 0xc000 /* setect on, digitise on */ | |
66 | #define WM97XX_RPR 0x2000 /* wake up on pen down */ | |
67 | #define WM97XX_PEN_DOWN 0x8000 /* pen is down */ | |
febf1dff | 68 | |
febf1dff MB |
69 | /* WM9712 Bits */ |
70 | #define WM9712_45W 0x1000 /* set for 5-wire touchscreen */ | |
71 | #define WM9712_PDEN 0x0800 /* measure only when pen down */ | |
72 | #define WM9712_WAIT 0x0200 /* wait until adc is read before next sample */ | |
73 | #define WM9712_PIL 0x0100 /* current used for pressure measurement. set 400uA else 200uA */ | |
74 | #define WM9712_MASK_HI 0x0040 /* hi on mask pin (47) stops conversions */ | |
75 | #define WM9712_MASK_EDGE 0x0080 /* rising/falling edge on pin delays sample */ | |
76 | #define WM9712_MASK_SYNC 0x00c0 /* rising/falling edge on mask initiates sample */ | |
77 | #define WM9712_RPU(i) (i&0x3f) /* internal pull up on pen detect (64k / rpu) */ | |
78 | #define WM9712_PD(i) (0x1 << i) /* power management */ | |
79 | ||
80 | /* WM9712 Registers */ | |
81 | #define AC97_WM9712_POWER 0x24 | |
82 | #define AC97_WM9712_REV 0x58 | |
83 | ||
84 | /* WM9705 Bits */ | |
85 | #define WM9705_PDEN 0x1000 /* measure only when pen is down */ | |
86 | #define WM9705_PINV 0x0800 /* inverts sense of pen down output */ | |
87 | #define WM9705_BSEN 0x0400 /* BUSY flag enable, pin47 is 1 when busy */ | |
88 | #define WM9705_BINV 0x0200 /* invert BUSY (pin47) output */ | |
89 | #define WM9705_WAIT 0x0100 /* wait until adc is read before next sample */ | |
90 | #define WM9705_PIL 0x0080 /* current used for pressure measurement. set 400uA else 200uA */ | |
91 | #define WM9705_PHIZ 0x0040 /* set PHONE and PCBEEP inputs to high impedance */ | |
92 | #define WM9705_MASK_HI 0x0010 /* hi on mask stops conversions */ | |
93 | #define WM9705_MASK_EDGE 0x0020 /* rising/falling edge on pin delays sample */ | |
94 | #define WM9705_MASK_SYNC 0x0030 /* rising/falling edge on mask initiates sample */ | |
95 | #define WM9705_PDD(i) (i & 0x000f) /* pen detect comparator threshold */ | |
96 | ||
97 | ||
98 | /* WM9713 Bits */ | |
99 | #define WM9713_PDPOL 0x0400 /* Pen down polarity */ | |
100 | #define WM9713_POLL 0x0200 /* initiate a polling measurement */ | |
101 | #define WM9713_CTC 0x0100 /* enable continuous mode */ | |
102 | #define WM9713_ADCSEL_X 0x0002 /* X measurement */ | |
103 | #define WM9713_ADCSEL_Y 0x0004 /* Y measurement */ | |
104 | #define WM9713_ADCSEL_PRES 0x0008 /* Pressure measurement */ | |
105 | #define WM9713_COO 0x0001 /* enable coordinate mode */ | |
43f83a8f | 106 | #define WM9713_45W 0x1000 /* set for 5 wire panel */ |
febf1dff MB |
107 | #define WM9713_PDEN 0x0800 /* measure only when pen down */ |
108 | #define WM9713_ADCSEL_MASK 0x00fe /* ADC selection mask */ | |
109 | #define WM9713_WAIT 0x0200 /* coordinate wait */ | |
110 | ||
111 | /* AUX ADC ID's */ | |
112 | #define TS_COMP1 0x0 | |
113 | #define TS_COMP2 0x1 | |
114 | #define TS_BMON 0x2 | |
115 | #define TS_WIPER 0x3 | |
116 | ||
117 | /* ID numbers */ | |
118 | #define WM97XX_ID1 0x574d | |
119 | #define WM9712_ID2 0x4c12 | |
120 | #define WM9705_ID2 0x4c05 | |
121 | #define WM9713_ID2 0x4c13 | |
122 | ||
123 | /* Codec GPIO's */ | |
124 | #define WM97XX_MAX_GPIO 16 | |
125 | #define WM97XX_GPIO_1 (1 << 1) | |
126 | #define WM97XX_GPIO_2 (1 << 2) | |
127 | #define WM97XX_GPIO_3 (1 << 3) | |
128 | #define WM97XX_GPIO_4 (1 << 4) | |
129 | #define WM97XX_GPIO_5 (1 << 5) | |
130 | #define WM97XX_GPIO_6 (1 << 6) | |
131 | #define WM97XX_GPIO_7 (1 << 7) | |
132 | #define WM97XX_GPIO_8 (1 << 8) | |
133 | #define WM97XX_GPIO_9 (1 << 9) | |
134 | #define WM97XX_GPIO_10 (1 << 10) | |
135 | #define WM97XX_GPIO_11 (1 << 11) | |
136 | #define WM97XX_GPIO_12 (1 << 12) | |
137 | #define WM97XX_GPIO_13 (1 << 13) | |
138 | #define WM97XX_GPIO_14 (1 << 14) | |
139 | #define WM97XX_GPIO_15 (1 << 15) | |
140 | ||
141 | ||
142 | #define AC97_LINK_FRAME 21 /* time in uS for AC97 link frame */ | |
143 | ||
144 | ||
145 | /*---------------- Return codes from sample reading functions ---------------*/ | |
146 | ||
147 | /* More data is available; call the sample gathering function again */ | |
148 | #define RC_AGAIN 0x00000001 | |
149 | /* The returned sample is valid */ | |
150 | #define RC_VALID 0x00000002 | |
151 | /* The pen is up (the first RC_VALID without RC_PENUP means pen is down) */ | |
152 | #define RC_PENUP 0x00000004 | |
153 | /* The pen is down (RC_VALID implies RC_PENDOWN, but sometimes it is helpful | |
154 | to tell the handler that the pen is down but we don't know yet his coords, | |
155 | so the handler should not sleep or wait for pendown irq) */ | |
156 | #define RC_PENDOWN 0x00000008 | |
157 | ||
158 | /* | |
159 | * The wm97xx driver provides a private API for writing platform-specific | |
160 | * drivers. | |
161 | */ | |
162 | ||
163 | /* The structure used to return arch specific sampled data into */ | |
164 | struct wm97xx_data { | |
165 | int x; | |
166 | int y; | |
167 | int p; | |
168 | }; | |
169 | ||
170 | /* | |
171 | * Codec GPIO status | |
172 | */ | |
173 | enum wm97xx_gpio_status { | |
174 | WM97XX_GPIO_HIGH, | |
175 | WM97XX_GPIO_LOW | |
176 | }; | |
177 | ||
178 | /* | |
179 | * Codec GPIO direction | |
180 | */ | |
181 | enum wm97xx_gpio_dir { | |
182 | WM97XX_GPIO_IN, | |
183 | WM97XX_GPIO_OUT | |
184 | }; | |
185 | ||
186 | /* | |
187 | * Codec GPIO polarity | |
188 | */ | |
189 | enum wm97xx_gpio_pol { | |
190 | WM97XX_GPIO_POL_HIGH, | |
191 | WM97XX_GPIO_POL_LOW | |
192 | }; | |
193 | ||
194 | /* | |
195 | * Codec GPIO sticky | |
196 | */ | |
197 | enum wm97xx_gpio_sticky { | |
198 | WM97XX_GPIO_STICKY, | |
199 | WM97XX_GPIO_NOTSTICKY | |
200 | }; | |
201 | ||
202 | /* | |
203 | * Codec GPIO wake | |
204 | */ | |
205 | enum wm97xx_gpio_wake { | |
206 | WM97XX_GPIO_WAKE, | |
207 | WM97XX_GPIO_NOWAKE | |
208 | }; | |
209 | ||
210 | /* | |
211 | * Digitiser ioctl commands | |
212 | */ | |
213 | #define WM97XX_DIG_START 0x1 | |
214 | #define WM97XX_DIG_STOP 0x2 | |
215 | #define WM97XX_PHY_INIT 0x3 | |
216 | #define WM97XX_AUX_PREPARE 0x4 | |
217 | #define WM97XX_DIG_RESTORE 0x5 | |
218 | ||
219 | struct wm97xx; | |
220 | ||
221 | extern struct wm97xx_codec_drv wm9705_codec; | |
222 | extern struct wm97xx_codec_drv wm9712_codec; | |
223 | extern struct wm97xx_codec_drv wm9713_codec; | |
224 | ||
225 | /* | |
226 | * Codec driver interface - allows mapping to WM9705/12/13 and newer codecs | |
227 | */ | |
228 | struct wm97xx_codec_drv { | |
229 | u16 id; | |
230 | char *name; | |
231 | ||
232 | /* read 1 sample */ | |
233 | int (*poll_sample) (struct wm97xx *, int adcsel, int *sample); | |
234 | ||
235 | /* read X,Y,[P] in poll */ | |
236 | int (*poll_touch) (struct wm97xx *, struct wm97xx_data *); | |
237 | ||
238 | int (*acc_enable) (struct wm97xx *, int enable); | |
239 | void (*phy_init) (struct wm97xx *); | |
240 | void (*dig_enable) (struct wm97xx *, int enable); | |
241 | void (*dig_restore) (struct wm97xx *); | |
242 | void (*aux_prepare) (struct wm97xx *); | |
243 | }; | |
244 | ||
245 | ||
246 | /* Machine specific and accelerated touch operations */ | |
247 | struct wm97xx_mach_ops { | |
248 | ||
249 | /* accelerated touch readback - coords are transmited on AC97 link */ | |
250 | int acc_enabled; | |
251 | void (*acc_pen_up) (struct wm97xx *); | |
252 | int (*acc_pen_down) (struct wm97xx *); | |
253 | int (*acc_startup) (struct wm97xx *); | |
254 | void (*acc_shutdown) (struct wm97xx *); | |
255 | ||
256 | /* interrupt mask control - required for accelerated operation */ | |
257 | void (*irq_enable) (struct wm97xx *, int enable); | |
258 | ||
259 | /* GPIO pin used for accelerated operation */ | |
260 | int irq_gpio; | |
261 | ||
262 | /* pre and post sample - can be used to minimise any analog noise */ | |
263 | void (*pre_sample) (int); /* function to run before sampling */ | |
264 | void (*post_sample) (int); /* function to run after sampling */ | |
265 | }; | |
266 | ||
267 | struct wm97xx { | |
268 | u16 dig[3], id, gpio[6], misc; /* Cached codec registers */ | |
269 | u16 dig_save[3]; /* saved during aux reading */ | |
270 | struct wm97xx_codec_drv *codec; /* attached codec driver*/ | |
271 | struct input_dev *input_dev; /* touchscreen input device */ | |
272 | struct snd_ac97 *ac97; /* ALSA codec access */ | |
273 | struct device *dev; /* ALSA device */ | |
274 | struct platform_device *battery_dev; | |
275 | struct platform_device *touch_dev; | |
276 | struct wm97xx_mach_ops *mach_ops; | |
277 | struct mutex codec_mutex; | |
278 | struct delayed_work ts_reader; /* Used to poll touchscreen */ | |
279 | unsigned long ts_reader_interval; /* Current interval for timer */ | |
280 | unsigned long ts_reader_min_interval; /* Minimum interval */ | |
281 | unsigned int pen_irq; /* Pen IRQ number in use */ | |
282 | struct workqueue_struct *ts_workq; | |
283 | struct work_struct pen_event_work; | |
284 | u16 acc_slot; /* AC97 slot used for acc touch data */ | |
285 | u16 acc_rate; /* acc touch data rate */ | |
286 | unsigned pen_is_down:1; /* Pen is down */ | |
287 | unsigned aux_waiting:1; /* aux measurement waiting */ | |
288 | unsigned pen_probably_down:1; /* used in polling mode */ | |
99fde513 | 289 | u16 variant; /* WM97xx chip variant */ |
34d27853 | 290 | u16 suspend_mode; /* PRP in suspend mode */ |
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291 | }; |
292 | ||
b8bdc1d0 MV |
293 | struct wm97xx_batt_pdata { |
294 | int batt_aux; | |
295 | int temp_aux; | |
296 | int charge_gpio; | |
297 | int min_voltage; | |
298 | int max_voltage; | |
299 | int batt_div; | |
300 | int batt_mult; | |
301 | int temp_div; | |
302 | int temp_mult; | |
303 | int batt_tech; | |
304 | char *batt_name; | |
305 | }; | |
306 | ||
307 | struct wm97xx_pdata { | |
308 | struct wm97xx_batt_pdata *batt_pdata; /* battery data */ | |
309 | }; | |
310 | ||
febf1dff MB |
311 | /* |
312 | * Codec GPIO access (not supported on WM9705) | |
313 | * This can be used to set/get codec GPIO and Virtual GPIO status. | |
314 | */ | |
315 | enum wm97xx_gpio_status wm97xx_get_gpio(struct wm97xx *wm, u32 gpio); | |
316 | void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio, | |
317 | enum wm97xx_gpio_status status); | |
318 | void wm97xx_config_gpio(struct wm97xx *wm, u32 gpio, | |
319 | enum wm97xx_gpio_dir dir, | |
320 | enum wm97xx_gpio_pol pol, | |
321 | enum wm97xx_gpio_sticky sticky, | |
322 | enum wm97xx_gpio_wake wake); | |
323 | ||
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324 | void wm97xx_set_suspend_mode(struct wm97xx *wm, u16 mode); |
325 | ||
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326 | /* codec AC97 IO access */ |
327 | int wm97xx_reg_read(struct wm97xx *wm, u16 reg); | |
328 | void wm97xx_reg_write(struct wm97xx *wm, u16 reg, u16 val); | |
329 | ||
330 | /* aux adc readback */ | |
331 | int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel); | |
332 | ||
333 | /* machine ops */ | |
334 | int wm97xx_register_mach_ops(struct wm97xx *, struct wm97xx_mach_ops *); | |
335 | void wm97xx_unregister_mach_ops(struct wm97xx *); | |
336 | ||
337 | #endif |