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db1b9037 CC |
1 | /* |
2 | * extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC | |
3 | * | |
4 | * Copyright (C) 2012 Samsung Electrnoics | |
5 | * Chanwoo Choi <cw00.choi@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/slab.h> | |
39bf369e | 22 | #include <linux/input.h> |
db1b9037 CC |
23 | #include <linux/interrupt.h> |
24 | #include <linux/err.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/mfd/max77693.h> | |
27 | #include <linux/mfd/max77693-private.h> | |
28 | #include <linux/extcon.h> | |
29 | #include <linux/regmap.h> | |
30 | #include <linux/irqdomain.h> | |
31 | ||
32 | #define DEV_NAME "max77693-muic" | |
297620fd | 33 | #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ |
db1b9037 | 34 | |
0ec83bd2 CC |
35 | /* |
36 | * Default value of MAX77693 register to bring up MUIC device. | |
37 | * If user don't set some initial value for MUIC device through platform data, | |
38 | * extcon-max77693 driver use 'default_init_data' to bring up base operation | |
39 | * of MAX77693 MUIC device. | |
40 | */ | |
813b4516 | 41 | static struct max77693_reg_data default_init_data[] = { |
0ec83bd2 CC |
42 | { |
43 | /* STATUS2 - [3]ChgDetRun */ | |
44 | .addr = MAX77693_MUIC_REG_STATUS2, | |
45 | .data = STATUS2_CHGDETRUN_MASK, | |
46 | }, { | |
47 | /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ | |
48 | .addr = MAX77693_MUIC_REG_INTMASK1, | |
49 | .data = INTMASK1_ADC1K_MASK | |
50 | | INTMASK1_ADC_MASK, | |
51 | }, { | |
52 | /* INTMASK2 - Unmask [0]ChgTypM */ | |
53 | .addr = MAX77693_MUIC_REG_INTMASK2, | |
54 | .data = INTMASK2_CHGTYP_MASK, | |
55 | }, { | |
56 | /* INTMASK3 - Mask all of interrupts */ | |
57 | .addr = MAX77693_MUIC_REG_INTMASK3, | |
58 | .data = 0x0, | |
59 | }, { | |
60 | /* CDETCTRL2 */ | |
61 | .addr = MAX77693_MUIC_REG_CDETCTRL2, | |
62 | .data = CDETCTRL2_VIDRMEN_MASK | |
63 | | CDETCTRL2_DXOVPEN_MASK, | |
64 | }, | |
65 | }; | |
66 | ||
db1b9037 CC |
67 | enum max77693_muic_adc_debounce_time { |
68 | ADC_DEBOUNCE_TIME_5MS = 0, | |
69 | ADC_DEBOUNCE_TIME_10MS, | |
70 | ADC_DEBOUNCE_TIME_25MS, | |
71 | ADC_DEBOUNCE_TIME_38_62MS, | |
72 | }; | |
73 | ||
74 | struct max77693_muic_info { | |
75 | struct device *dev; | |
76 | struct max77693_dev *max77693; | |
77 | struct extcon_dev *edev; | |
154f757f CC |
78 | int prev_cable_type; |
79 | int prev_cable_type_gnd; | |
db1b9037 | 80 | int prev_chg_type; |
39bf369e | 81 | int prev_button_type; |
db1b9037 CC |
82 | u8 status[2]; |
83 | ||
84 | int irq; | |
85 | struct work_struct irq_work; | |
86 | struct mutex mutex; | |
39bf369e | 87 | |
297620fd CC |
88 | /* |
89 | * Use delayed workqueue to detect cable state and then | |
90 | * notify cable state to notifiee/platform through uevent. | |
91 | * After completing the booting of platform, the extcon provider | |
92 | * driver should notify cable state to upper layer. | |
93 | */ | |
94 | struct delayed_work wq_detcable; | |
95 | ||
39bf369e CC |
96 | /* Button of dock device */ |
97 | struct input_dev *dock; | |
2b75799f CC |
98 | |
99 | /* | |
100 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
101 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
102 | */ | |
103 | int path_usb; | |
104 | int path_uart; | |
db1b9037 CC |
105 | }; |
106 | ||
154f757f CC |
107 | enum max77693_muic_cable_group { |
108 | MAX77693_CABLE_GROUP_ADC = 0, | |
109 | MAX77693_CABLE_GROUP_ADC_GND, | |
110 | MAX77693_CABLE_GROUP_CHG, | |
111 | MAX77693_CABLE_GROUP_VBVOLT, | |
112 | }; | |
113 | ||
db1b9037 CC |
114 | enum max77693_muic_charger_type { |
115 | MAX77693_CHARGER_TYPE_NONE = 0, | |
116 | MAX77693_CHARGER_TYPE_USB, | |
117 | MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, | |
118 | MAX77693_CHARGER_TYPE_DEDICATED_CHG, | |
119 | MAX77693_CHARGER_TYPE_APPLE_500MA, | |
120 | MAX77693_CHARGER_TYPE_APPLE_1A_2A, | |
121 | MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, | |
122 | }; | |
123 | ||
124 | /** | |
125 | * struct max77693_muic_irq | |
126 | * @irq: the index of irq list of MUIC device. | |
127 | * @name: the name of irq. | |
128 | * @virq: the virtual irq to use irq domain | |
129 | */ | |
130 | struct max77693_muic_irq { | |
131 | unsigned int irq; | |
132 | const char *name; | |
133 | unsigned int virq; | |
134 | }; | |
135 | ||
136 | static struct max77693_muic_irq muic_irqs[] = { | |
137 | { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, | |
138 | { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, | |
139 | { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, | |
140 | { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, | |
141 | { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, | |
142 | { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, | |
143 | { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, | |
144 | { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, | |
145 | { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, | |
146 | { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, | |
147 | { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, | |
148 | { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, | |
149 | { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, | |
150 | { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, | |
151 | { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, | |
152 | { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, | |
153 | }; | |
154 | ||
155 | /* Define supported accessory type */ | |
156 | enum max77693_muic_acc_type { | |
157 | MAX77693_MUIC_ADC_GROUND = 0x0, | |
158 | MAX77693_MUIC_ADC_SEND_END_BUTTON, | |
159 | MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, | |
160 | MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, | |
161 | MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, | |
162 | MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, | |
163 | MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, | |
164 | MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, | |
165 | MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, | |
166 | MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, | |
167 | MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, | |
168 | MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, | |
169 | MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, | |
170 | MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, | |
171 | MAX77693_MUIC_ADC_RESERVED_ACC_1, | |
172 | MAX77693_MUIC_ADC_RESERVED_ACC_2, | |
173 | MAX77693_MUIC_ADC_RESERVED_ACC_3, | |
174 | MAX77693_MUIC_ADC_RESERVED_ACC_4, | |
175 | MAX77693_MUIC_ADC_RESERVED_ACC_5, | |
176 | MAX77693_MUIC_ADC_CEA936_AUDIO, | |
177 | MAX77693_MUIC_ADC_PHONE_POWERED_DEV, | |
178 | MAX77693_MUIC_ADC_TTY_CONVERTER, | |
179 | MAX77693_MUIC_ADC_UART_CABLE, | |
180 | MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, | |
181 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, | |
182 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, | |
183 | MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, | |
184 | MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, | |
185 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, | |
186 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, | |
187 | MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, | |
188 | MAX77693_MUIC_ADC_OPEN, | |
189 | ||
190 | /* The below accessories have same ADC value so ADCLow and | |
191 | ADC1K bit is used to separate specific accessory */ | |
c2275d2f | 192 | /* ADC|VBVolot|ADCLow|ADC1K| */ |
4c883abe JK |
193 | MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */ |
194 | MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */ | |
c2275d2f CC |
195 | MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ |
196 | MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ | |
197 | MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ | |
db1b9037 CC |
198 | }; |
199 | ||
c2275d2f CC |
200 | /* |
201 | * MAX77693 MUIC device support below list of accessories(external connector) | |
202 | */ | |
154f757f CC |
203 | enum { |
204 | EXTCON_CABLE_USB = 0, | |
205 | EXTCON_CABLE_USB_HOST, | |
206 | EXTCON_CABLE_TA, | |
207 | EXTCON_CABLE_FAST_CHARGER, | |
208 | EXTCON_CABLE_SLOW_CHARGER, | |
209 | EXTCON_CABLE_CHARGE_DOWNSTREAM, | |
210 | EXTCON_CABLE_MHL, | |
41b3c015 | 211 | EXTCON_CABLE_JIG, |
d519c423 | 212 | EXTCON_CABLE_DOCK, |
154f757f CC |
213 | |
214 | _EXTCON_CABLE_NUM, | |
215 | }; | |
db1b9037 | 216 | |
45d4a4e6 | 217 | static const char *max77693_extcon_cable[] = { |
154f757f CC |
218 | [EXTCON_CABLE_USB] = "USB", |
219 | [EXTCON_CABLE_USB_HOST] = "USB-Host", | |
220 | [EXTCON_CABLE_TA] = "TA", | |
221 | [EXTCON_CABLE_FAST_CHARGER] = "Fast-charger", | |
222 | [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger", | |
223 | [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream", | |
224 | [EXTCON_CABLE_MHL] = "MHL", | |
41b3c015 | 225 | [EXTCON_CABLE_JIG] = "JIG", |
d519c423 | 226 | [EXTCON_CABLE_DOCK] = "DOCK", |
d0587eb7 | 227 | |
db1b9037 CC |
228 | NULL, |
229 | }; | |
230 | ||
154f757f CC |
231 | /* |
232 | * max77693_muic_set_debounce_time - Set the debounce time of ADC | |
233 | * @info: the instance including private data of max77693 MUIC | |
234 | * @time: the debounce time of ADC | |
235 | */ | |
db1b9037 CC |
236 | static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
237 | enum max77693_muic_adc_debounce_time time) | |
238 | { | |
bf2627d6 | 239 | int ret; |
db1b9037 CC |
240 | |
241 | switch (time) { | |
242 | case ADC_DEBOUNCE_TIME_5MS: | |
243 | case ADC_DEBOUNCE_TIME_10MS: | |
244 | case ADC_DEBOUNCE_TIME_25MS: | |
245 | case ADC_DEBOUNCE_TIME_38_62MS: | |
dc6048d7 JL |
246 | /* |
247 | * Don't touch BTLDset, JIGset when you want to change adc | |
248 | * debounce time. If it writes other than 0 to BTLDset, JIGset | |
249 | * muic device will be reset and loose current state. | |
250 | */ | |
251 | ret = regmap_write(info->max77693->regmap_muic, | |
252 | MAX77693_MUIC_REG_CTRL3, | |
253 | time << CONTROL3_ADCDBSET_SHIFT); | |
19d3243e | 254 | if (ret) { |
db1b9037 | 255 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
c2536543 | 256 | return ret; |
19d3243e | 257 | } |
db1b9037 CC |
258 | break; |
259 | default: | |
260 | dev_err(info->dev, "invalid ADC debounce time\n"); | |
19d3243e | 261 | return -EINVAL; |
db1b9037 CC |
262 | } |
263 | ||
19d3243e | 264 | return 0; |
db1b9037 CC |
265 | }; |
266 | ||
154f757f CC |
267 | /* |
268 | * max77693_muic_set_path - Set hardware line according to attached cable | |
269 | * @info: the instance including private data of max77693 MUIC | |
270 | * @value: the path according to attached cable | |
271 | * @attached: the state of cable (true:attached, false:detached) | |
272 | * | |
273 | * The max77693 MUIC device share outside H/W line among a varity of cables | |
274 | * so, this function set internal path of H/W line according to the type of | |
275 | * attached cable. | |
276 | */ | |
db1b9037 CC |
277 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
278 | u8 val, bool attached) | |
279 | { | |
280 | int ret = 0; | |
d0540f91 | 281 | unsigned int ctrl1, ctrl2 = 0; |
db1b9037 CC |
282 | |
283 | if (attached) | |
284 | ctrl1 = val; | |
285 | else | |
286 | ctrl1 = CONTROL1_SW_OPEN; | |
287 | ||
d0540f91 RB |
288 | ret = regmap_update_bits(info->max77693->regmap_muic, |
289 | MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); | |
db1b9037 CC |
290 | if (ret < 0) { |
291 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 292 | return ret; |
db1b9037 CC |
293 | } |
294 | ||
295 | if (attached) | |
296 | ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ | |
297 | else | |
298 | ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ | |
299 | ||
d0540f91 RB |
300 | ret = regmap_update_bits(info->max77693->regmap_muic, |
301 | MAX77693_MUIC_REG_CTRL2, | |
302 | CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2); | |
db1b9037 CC |
303 | if (ret < 0) { |
304 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 305 | return ret; |
db1b9037 CC |
306 | } |
307 | ||
308 | dev_info(info->dev, | |
309 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
310 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
311 | |
312 | return 0; | |
db1b9037 CC |
313 | } |
314 | ||
154f757f CC |
315 | /* |
316 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
317 | * @info: the instance including private data of max77693 MUIC | |
318 | * @group: the path according to attached cable | |
319 | * @attached: store cable state and return | |
320 | * | |
321 | * This function check the cable state either attached or detached, | |
322 | * and then divide precise type of cable according to cable group. | |
323 | * - MAX77693_CABLE_GROUP_ADC | |
324 | * - MAX77693_CABLE_GROUP_ADC_GND | |
325 | * - MAX77693_CABLE_GROUP_CHG | |
326 | * - MAX77693_CABLE_GROUP_VBVOLT | |
327 | */ | |
328 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
329 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 330 | { |
154f757f CC |
331 | int cable_type = 0; |
332 | int adc; | |
333 | int adc1k; | |
334 | int adclow; | |
335 | int vbvolt; | |
336 | int chg_type; | |
337 | ||
338 | switch (group) { | |
339 | case MAX77693_CABLE_GROUP_ADC: | |
340 | /* | |
341 | * Read ADC value to check cable type and decide cable state | |
342 | * according to cable type | |
343 | */ | |
344 | adc = info->status[0] & STATUS1_ADC_MASK; | |
345 | adc >>= STATUS1_ADC_SHIFT; | |
346 | ||
347 | /* | |
348 | * Check current cable state/cable type and store cable type | |
349 | * (info->prev_cable_type) for handling cable when cable is | |
350 | * detached. | |
351 | */ | |
352 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
353 | *attached = false; | |
354 | ||
355 | cable_type = info->prev_cable_type; | |
356 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
357 | } else { | |
358 | *attached = true; | |
359 | ||
360 | cable_type = info->prev_cable_type = adc; | |
361 | } | |
362 | break; | |
363 | case MAX77693_CABLE_GROUP_ADC_GND: | |
364 | /* | |
365 | * Read ADC value to check cable type and decide cable state | |
366 | * according to cable type | |
367 | */ | |
368 | adc = info->status[0] & STATUS1_ADC_MASK; | |
369 | adc >>= STATUS1_ADC_SHIFT; | |
db1b9037 | 370 | |
154f757f CC |
371 | /* |
372 | * Check current cable state/cable type and store cable type | |
373 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
374 | * is detached. | |
375 | */ | |
376 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
377 | *attached = false; | |
378 | ||
379 | cable_type = info->prev_cable_type_gnd; | |
380 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
381 | } else { | |
382 | *attached = true; | |
383 | ||
384 | adclow = info->status[0] & STATUS1_ADCLOW_MASK; | |
385 | adclow >>= STATUS1_ADCLOW_SHIFT; | |
386 | adc1k = info->status[0] & STATUS1_ADC1K_MASK; | |
387 | adc1k >>= STATUS1_ADC1K_SHIFT; | |
388 | ||
389 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; | |
390 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
391 | ||
392 | /** | |
c2275d2f | 393 | * [0x1|VBVolt|ADCLow|ADC1K] |
4c883abe JK |
394 | * [0x1| 0| 0| 0] USB_HOST |
395 | * [0x1| 1| 0| 0] USB_HSOT_VB | |
c2275d2f CC |
396 | * [0x1| 0| 1| 0] Audio Video cable with load |
397 | * [0x1| 0| 1| 1] MHL without charging cable | |
398 | * [0x1| 1| 1| 1] MHL with charging cable | |
154f757f CC |
399 | */ |
400 | cable_type = ((0x1 << 8) | |
401 | | (vbvolt << 2) | |
402 | | (adclow << 1) | |
403 | | adc1k); | |
404 | ||
405 | info->prev_cable_type = adc; | |
406 | info->prev_cable_type_gnd = cable_type; | |
407 | } | |
408 | ||
409 | break; | |
410 | case MAX77693_CABLE_GROUP_CHG: | |
411 | /* | |
412 | * Read charger type to check cable type and decide cable state | |
413 | * according to type of charger cable. | |
414 | */ | |
415 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
416 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
417 | ||
418 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
419 | *attached = false; | |
420 | ||
421 | cable_type = info->prev_chg_type; | |
422 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
423 | } else { | |
424 | *attached = true; | |
425 | ||
426 | /* | |
427 | * Check current cable state/cable type and store cable | |
428 | * type(info->prev_chg_type) for handling cable when | |
429 | * charger cable is detached. | |
430 | */ | |
431 | cable_type = info->prev_chg_type = chg_type; | |
432 | } | |
433 | ||
434 | break; | |
435 | case MAX77693_CABLE_GROUP_VBVOLT: | |
436 | /* | |
437 | * Read ADC value to check cable type and decide cable state | |
438 | * according to cable type | |
439 | */ | |
db1b9037 | 440 | adc = info->status[0] & STATUS1_ADC_MASK; |
154f757f CC |
441 | adc >>= STATUS1_ADC_SHIFT; |
442 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
443 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
444 | ||
445 | if (adc == MAX77693_MUIC_ADC_OPEN | |
446 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
447 | *attached = false; | |
448 | else | |
449 | *attached = true; | |
450 | ||
451 | /* | |
452 | * Read vbvolt field, if vbvolt is 1, | |
453 | * this cable is used for charging. | |
db1b9037 | 454 | */ |
154f757f CC |
455 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
456 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
457 | ||
458 | cable_type = vbvolt; | |
459 | break; | |
460 | default: | |
461 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
462 | cable_type = -EINVAL; | |
463 | break; | |
464 | } | |
465 | ||
466 | return cable_type; | |
467 | } | |
468 | ||
39bf369e CC |
469 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
470 | int cable_type, bool attached) | |
471 | { | |
472 | int ret = 0; | |
a1626298 CC |
473 | int vbvolt; |
474 | bool cable_attached; | |
39bf369e CC |
475 | char dock_name[CABLE_NAME_MAX]; |
476 | ||
477 | dev_info(info->dev, | |
478 | "external connector is %s (adc:0x%02x)\n", | |
479 | attached ? "attached" : "detached", cable_type); | |
480 | ||
481 | switch (cable_type) { | |
482 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
483 | /* |
484 | * Check power cable whether attached or detached state. | |
485 | * The Dock-Smart device need surely external power supply. | |
486 | * If power cable(USB/TA) isn't connected to Dock device, | |
487 | * user can't use Dock-Smart for desktop mode. | |
488 | */ | |
489 | vbvolt = max77693_muic_get_cable_type(info, | |
490 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
491 | if (attached && !vbvolt) { | |
492 | dev_warn(info->dev, | |
493 | "Cannot detect external power supply\n"); | |
494 | return 0; | |
495 | } | |
496 | ||
497 | /* | |
d519c423 CC |
498 | * Notify Dock/MHL state. |
499 | * - Dock device include three type of cable which | |
a1626298 | 500 | * are HDMI, USB for mouse/keyboard and micro-usb port |
d519c423 CC |
501 | * for USB/TA cable. Dock device need always exteranl |
502 | * power supply(USB/TA cable through micro-usb cable). Dock | |
503 | * device support screen output of target to separate | |
a1626298 CC |
504 | * monitor and mouse/keyboard for desktop mode. |
505 | * | |
d519c423 | 506 | * Features of 'USB/TA cable with Dock device' |
a1626298 CC |
507 | * - Support MHL |
508 | * - Support external output feature of audio | |
509 | * - Support charging through micro-usb port without data | |
510 | * connection if TA cable is connected to target. | |
511 | * - Support charging and data connection through micro-usb port | |
512 | * if USB cable is connected between target and host | |
513 | * device. | |
4c883abe | 514 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 CC |
515 | */ |
516 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 517 | if (ret < 0) |
a1626298 | 518 | return ret; |
39bf369e | 519 | |
d519c423 | 520 | extcon_set_cable_state(info->edev, "DOCK", attached); |
a1626298 | 521 | extcon_set_cable_state(info->edev, "MHL", attached); |
39bf369e | 522 | goto out; |
39bf369e | 523 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
d519c423 | 524 | strcpy(dock_name, "DOCK"); |
39bf369e CC |
525 | break; |
526 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
d519c423 | 527 | strcpy(dock_name, "DOCK"); |
39bf369e CC |
528 | if (!attached) |
529 | extcon_set_cable_state(info->edev, "USB", false); | |
530 | break; | |
19d3243e CC |
531 | default: |
532 | dev_err(info->dev, "failed to detect %s dock device\n", | |
533 | attached ? "attached" : "detached"); | |
534 | return -EINVAL; | |
39bf369e CC |
535 | } |
536 | ||
537 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
538 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); | |
539 | if (ret < 0) | |
a1626298 | 540 | return ret; |
39bf369e CC |
541 | extcon_set_cable_state(info->edev, dock_name, attached); |
542 | ||
543 | out: | |
a1626298 | 544 | return 0; |
39bf369e CC |
545 | } |
546 | ||
547 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
548 | int button_type, bool attached) | |
549 | { | |
550 | struct input_dev *dock = info->dock; | |
551 | unsigned int code; | |
39bf369e CC |
552 | |
553 | switch (button_type) { | |
554 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
555 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
556 | /* DOCK_KEY_PREV */ | |
557 | code = KEY_PREVIOUSSONG; | |
558 | break; | |
559 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
560 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
561 | /* DOCK_KEY_NEXT */ | |
562 | code = KEY_NEXTSONG; | |
563 | break; | |
564 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
565 | /* DOCK_VOL_DOWN */ | |
566 | code = KEY_VOLUMEDOWN; | |
567 | break; | |
568 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
569 | /* DOCK_VOL_UP */ | |
570 | code = KEY_VOLUMEUP; | |
571 | break; | |
572 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
573 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
574 | /* DOCK_KEY_PLAY_PAUSE */ | |
575 | code = KEY_PLAYPAUSE; | |
576 | break; | |
577 | default: | |
578 | dev_err(info->dev, | |
579 | "failed to detect %s key (adc:0x%x)\n", | |
580 | attached ? "pressed" : "released", button_type); | |
19d3243e | 581 | return -EINVAL; |
39bf369e CC |
582 | } |
583 | ||
584 | input_event(dock, EV_KEY, code, attached); | |
585 | input_sync(dock); | |
586 | ||
39bf369e CC |
587 | return 0; |
588 | } | |
589 | ||
154f757f CC |
590 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
591 | { | |
592 | int cable_type_gnd; | |
593 | int ret = 0; | |
594 | bool attached; | |
db1b9037 | 595 | |
154f757f CC |
596 | cable_type_gnd = max77693_muic_get_cable_type(info, |
597 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 598 | |
154f757f | 599 | switch (cable_type_gnd) { |
4c883abe JK |
600 | case MAX77693_MUIC_GND_USB_HOST: |
601 | case MAX77693_MUIC_GND_USB_HOST_VB: | |
602 | /* USB_HOST, PATH: AP_USB */ | |
db1b9037 CC |
603 | ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
604 | if (ret < 0) | |
19d3243e | 605 | return ret; |
db1b9037 CC |
606 | extcon_set_cable_state(info->edev, "USB-Host", attached); |
607 | break; | |
608 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 609 | /* Audio Video Cable with load, PATH:AUDIO */ |
db1b9037 CC |
610 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
611 | if (ret < 0) | |
19d3243e | 612 | return ret; |
db1b9037 CC |
613 | extcon_set_cable_state(info->edev, |
614 | "Audio-video-load", attached); | |
615 | break; | |
06bed0af CC |
616 | case MAX77693_MUIC_GND_MHL: |
617 | case MAX77693_MUIC_GND_MHL_VB: | |
618 | /* MHL or MHL with USB/TA cable */ | |
db1b9037 CC |
619 | extcon_set_cable_state(info->edev, "MHL", attached); |
620 | break; | |
621 | default: | |
19d3243e | 622 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 623 | attached ? "attached" : "detached"); |
19d3243e | 624 | return -EINVAL; |
db1b9037 CC |
625 | } |
626 | ||
19d3243e | 627 | return 0; |
db1b9037 CC |
628 | } |
629 | ||
d0587eb7 CC |
630 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
631 | int cable_type, bool attached) | |
632 | { | |
d0587eb7 CC |
633 | int ret = 0; |
634 | u8 path = CONTROL1_SW_OPEN; | |
635 | ||
636 | dev_info(info->dev, | |
637 | "external connector is %s (adc:0x%02x)\n", | |
638 | attached ? "attached" : "detached", cable_type); | |
639 | ||
640 | switch (cable_type) { | |
641 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
d0587eb7 CC |
642 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ |
643 | /* PATH:AP_USB */ | |
d0587eb7 CC |
644 | path = CONTROL1_SW_USB; |
645 | break; | |
646 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
c22159a2 KK |
647 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */ |
648 | /* PATH:AP_UART */ | |
c22159a2 KK |
649 | path = CONTROL1_SW_UART; |
650 | break; | |
19d3243e CC |
651 | default: |
652 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
653 | attached ? "attached" : "detached"); | |
654 | return -EINVAL; | |
d0587eb7 CC |
655 | } |
656 | ||
657 | ret = max77693_muic_set_path(info, path, attached); | |
658 | if (ret < 0) | |
19d3243e | 659 | return ret; |
d0587eb7 | 660 | |
41b3c015 | 661 | extcon_set_cable_state(info->edev, "JIG", attached); |
19d3243e CC |
662 | |
663 | return 0; | |
d0587eb7 CC |
664 | } |
665 | ||
154f757f | 666 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 667 | { |
154f757f | 668 | int cable_type; |
39bf369e | 669 | int button_type; |
154f757f | 670 | bool attached; |
db1b9037 | 671 | int ret = 0; |
db1b9037 | 672 | |
154f757f CC |
673 | /* Check accessory state which is either detached or attached */ |
674 | cable_type = max77693_muic_get_cable_type(info, | |
675 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
676 | |
677 | dev_info(info->dev, | |
678 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
679 | attached ? "attached" : "detached", cable_type, |
680 | info->prev_cable_type); | |
db1b9037 | 681 | |
154f757f | 682 | switch (cable_type) { |
db1b9037 | 683 | case MAX77693_MUIC_ADC_GROUND: |
4c883abe | 684 | /* USB_HOST/MHL/Audio */ |
154f757f | 685 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
686 | break; |
687 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
688 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 689 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
c22159a2 | 690 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: |
db1b9037 | 691 | /* JIG */ |
d0587eb7 | 692 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 693 | if (ret < 0) |
19d3243e | 694 | return ret; |
db1b9037 | 695 | break; |
39bf369e | 696 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
39bf369e CC |
697 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
698 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
699 | /* | |
700 | * DOCK device | |
701 | * | |
702 | * The MAX77693 MUIC device can detect total 34 cable type | |
703 | * except of charger cable and MUIC device didn't define | |
704 | * specfic role of cable in the range of from 0x01 to 0x12 | |
705 | * of ADC value. So, can use/define cable with no role according | |
706 | * to schema of hardware board. | |
707 | */ | |
708 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
709 | if (ret < 0) | |
19d3243e | 710 | return ret; |
39bf369e | 711 | break; |
c2275d2f CC |
712 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
713 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
714 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
715 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
716 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
39bf369e CC |
717 | /* |
718 | * Button of DOCK device | |
719 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
720 | * | |
721 | * The MAX77693 MUIC device can detect total 34 cable type | |
722 | * except of charger cable and MUIC device didn't define | |
723 | * specfic role of cable in the range of from 0x01 to 0x12 | |
724 | * of ADC value. So, can use/define cable with no role according | |
725 | * to schema of hardware board. | |
726 | */ | |
727 | if (attached) | |
728 | button_type = info->prev_button_type = cable_type; | |
729 | else | |
730 | button_type = info->prev_button_type; | |
731 | ||
732 | ret = max77693_muic_dock_button_handler(info, button_type, | |
733 | attached); | |
db1b9037 | 734 | if (ret < 0) |
19d3243e | 735 | return ret; |
db1b9037 CC |
736 | break; |
737 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
738 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
739 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
740 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
741 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
742 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 743 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 744 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
745 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
746 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
747 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
748 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
749 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
750 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
751 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
752 | case MAX77693_MUIC_ADC_UART_CABLE: | |
753 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 754 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
755 | /* |
756 | * This accessory isn't used in general case if it is specially | |
757 | * needed to detect additional accessory, should implement | |
758 | * proper operation when this accessory is attached/detached. | |
759 | */ | |
db1b9037 CC |
760 | dev_info(info->dev, |
761 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 762 | attached ? "attached" : "detached", cable_type); |
19d3243e | 763 | return -EAGAIN; |
db1b9037 CC |
764 | default: |
765 | dev_err(info->dev, | |
766 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 767 | attached ? "attached" : "detached", cable_type); |
19d3243e | 768 | return -EINVAL; |
db1b9037 CC |
769 | } |
770 | ||
19d3243e | 771 | return 0; |
db1b9037 CC |
772 | } |
773 | ||
154f757f | 774 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 775 | { |
db1b9037 | 776 | int chg_type; |
06bed0af | 777 | int cable_type_gnd; |
39bf369e | 778 | int cable_type; |
154f757f | 779 | bool attached; |
06bed0af | 780 | bool cable_attached; |
154f757f | 781 | int ret = 0; |
db1b9037 | 782 | |
154f757f CC |
783 | chg_type = max77693_muic_get_cable_type(info, |
784 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
785 | |
786 | dev_info(info->dev, | |
787 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
788 | attached ? "attached" : "detached", | |
154f757f | 789 | chg_type, info->prev_chg_type); |
db1b9037 CC |
790 | |
791 | switch (chg_type) { | |
792 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 793 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 794 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 795 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
796 | cable_type_gnd = max77693_muic_get_cable_type(info, |
797 | MAX77693_CABLE_GROUP_ADC_GND, | |
798 | &cable_attached); | |
a1626298 CC |
799 | switch (cable_type_gnd) { |
800 | case MAX77693_MUIC_GND_MHL: | |
801 | case MAX77693_MUIC_GND_MHL_VB: | |
802 | /* | |
942e0239 | 803 | * MHL cable with USB/TA cable |
c2275d2f CC |
804 | * - MHL cable include two port(HDMI line and separate |
805 | * micro-usb port. When the target connect MHL cable, | |
942e0239 CC |
806 | * extcon driver check whether USB/TA cable is |
807 | * connected. If USB/TA cable is connected, extcon | |
c2275d2f | 808 | * driver notify state to notifiee for charging battery. |
a1626298 | 809 | * |
942e0239 | 810 | * Features of 'USB/TA with MHL cable' |
a1626298 | 811 | * - Support MHL |
c2275d2f CC |
812 | * - Support charging through micro-usb port without |
813 | * data connection | |
a1626298 | 814 | */ |
942e0239 | 815 | extcon_set_cable_state(info->edev, "TA", attached); |
06bed0af | 816 | if (!cable_attached) |
c2275d2f CC |
817 | extcon_set_cable_state(info->edev, |
818 | "MHL", cable_attached); | |
a1626298 | 819 | break; |
39bf369e CC |
820 | } |
821 | ||
a1626298 | 822 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
823 | cable_type = max77693_muic_get_cable_type(info, |
824 | MAX77693_CABLE_GROUP_ADC, | |
825 | &cable_attached); | |
a1626298 CC |
826 | switch (cable_type) { |
827 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
828 | /* | |
829 | * Dock-Audio device with USB/TA cable | |
c2275d2f CC |
830 | * - Dock device include two port(Dock-Audio and micro- |
831 | * usb port). When the target connect Dock-Audio device, | |
832 | * extcon driver check whether USB/TA cable is connected | |
833 | * or not. If USB/TA cable is connected, extcon driver | |
834 | * notify state to notifiee for charging battery. | |
a1626298 CC |
835 | * |
836 | * Features of 'USB/TA cable with Dock-Audio device' | |
837 | * - Support external output feature of audio. | |
c2275d2f CC |
838 | * - Support charging through micro-usb port without |
839 | * data connection. | |
a1626298 | 840 | */ |
06bed0af | 841 | extcon_set_cable_state(info->edev, "USB", attached); |
39bf369e CC |
842 | |
843 | if (!cable_attached) | |
d519c423 | 844 | extcon_set_cable_state(info->edev, "DOCK", |
c2275d2f | 845 | cable_attached); |
a1626298 CC |
846 | break; |
847 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
848 | /* | |
849 | * Dock-Smart device with USB/TA cable | |
850 | * - Dock-Desk device include three type of cable which | |
851 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
c2275d2f CC |
852 | * for USB/TA cable. Dock-Smart device need always |
853 | * exteranl power supply(USB/TA cable through micro-usb | |
854 | * cable). Dock-Smart device support screen output of | |
855 | * target to separate monitor and mouse/keyboard for | |
856 | * desktop mode. | |
a1626298 CC |
857 | * |
858 | * Features of 'USB/TA cable with Dock-Smart device' | |
859 | * - Support MHL | |
860 | * - Support external output feature of audio | |
c2275d2f CC |
861 | * - Support charging through micro-usb port without |
862 | * data connection if TA cable is connected to target. | |
863 | * - Support charging and data connection through micro- | |
864 | * usb port if USB cable is connected between target | |
865 | * and host device | |
4c883abe | 866 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 | 867 | */ |
c2275d2f CC |
868 | ret = max77693_muic_set_path(info, info->path_usb, |
869 | attached); | |
a1626298 CC |
870 | if (ret < 0) |
871 | return ret; | |
872 | ||
d519c423 | 873 | extcon_set_cable_state(info->edev, "DOCK", attached); |
a1626298 CC |
874 | extcon_set_cable_state(info->edev, "MHL", attached); |
875 | ||
876 | break; | |
06bed0af | 877 | } |
39bf369e | 878 | |
a1626298 CC |
879 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
880 | switch (chg_type) { | |
881 | case MAX77693_CHARGER_TYPE_NONE: | |
882 | /* | |
c2275d2f CC |
883 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
884 | * cable is attached, muic device happen below two irq. | |
885 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting | |
886 | * MHL/Dock-Audio. | |
887 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting | |
888 | * USB/TA cable connected to MHL or Dock-Audio. | |
889 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC | |
890 | * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. | |
a1626298 | 891 | * |
c2275d2f CC |
892 | * If user attach MHL (with USB/TA cable and immediately |
893 | * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ | |
894 | * _INT2_CHGTYP irq is happened, USB/TA cable remain | |
895 | * connected state to target. But USB/TA cable isn't | |
896 | * connected to target. The user be face with unusual | |
897 | * action. So, driver should check this situation in | |
898 | * spite of, that previous charger type is N/A. | |
a1626298 | 899 | */ |
0e2738f5 | 900 | break; |
a1626298 CC |
901 | case MAX77693_CHARGER_TYPE_USB: |
902 | /* Only USB cable, PATH:AP_USB */ | |
c2275d2f CC |
903 | ret = max77693_muic_set_path(info, info->path_usb, |
904 | attached); | |
a1626298 CC |
905 | if (ret < 0) |
906 | return ret; | |
0e2738f5 | 907 | |
a1626298 CC |
908 | extcon_set_cable_state(info->edev, "USB", attached); |
909 | break; | |
910 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
911 | /* Only TA cable */ | |
912 | extcon_set_cable_state(info->edev, "TA", attached); | |
913 | break; | |
914 | } | |
db1b9037 CC |
915 | break; |
916 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
917 | extcon_set_cable_state(info->edev, | |
918 | "Charge-downstream", attached); | |
919 | break; | |
db1b9037 CC |
920 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
921 | extcon_set_cable_state(info->edev, "Slow-charger", attached); | |
922 | break; | |
923 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
924 | extcon_set_cable_state(info->edev, "Fast-charger", attached); | |
925 | break; | |
926 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
927 | break; | |
928 | default: | |
929 | dev_err(info->dev, | |
930 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
931 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 932 | return -EINVAL; |
db1b9037 CC |
933 | } |
934 | ||
a1626298 | 935 | return 0; |
db1b9037 CC |
936 | } |
937 | ||
938 | static void max77693_muic_irq_work(struct work_struct *work) | |
939 | { | |
940 | struct max77693_muic_info *info = container_of(work, | |
941 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
942 | int irq_type = -1; |
943 | int i, ret = 0; | |
db1b9037 CC |
944 | |
945 | if (!info->edev) | |
946 | return; | |
947 | ||
948 | mutex_lock(&info->mutex); | |
949 | ||
a33411b2 | 950 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
db1b9037 CC |
951 | if (info->irq == muic_irqs[i].virq) |
952 | irq_type = muic_irqs[i].irq; | |
953 | ||
d0540f91 RB |
954 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
955 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
956 | if (ret) { |
957 | dev_err(info->dev, "failed to read MUIC register\n"); | |
958 | mutex_unlock(&info->mutex); | |
959 | return; | |
960 | } | |
961 | ||
962 | switch (irq_type) { | |
963 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
964 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
965 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
966 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
967 | /* Handle all of accessory except for | |
968 | type of charger accessory */ | |
154f757f | 969 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
970 | break; |
971 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
972 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
973 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
974 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
975 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
976 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
977 | /* Handle charger accessory */ | |
154f757f | 978 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
979 | break; |
980 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
981 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
982 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
983 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
984 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
985 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
986 | break; | |
987 | default: | |
988 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
989 | irq_type); | |
19d3243e CC |
990 | mutex_unlock(&info->mutex); |
991 | return; | |
db1b9037 CC |
992 | } |
993 | ||
994 | if (ret < 0) | |
995 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
996 | ||
997 | mutex_unlock(&info->mutex); | |
db1b9037 CC |
998 | } |
999 | ||
1000 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
1001 | { | |
1002 | struct max77693_muic_info *info = data; | |
1003 | ||
1004 | info->irq = irq; | |
1005 | schedule_work(&info->irq_work); | |
1006 | ||
1007 | return IRQ_HANDLED; | |
1008 | } | |
1009 | ||
65948900 | 1010 | static const struct regmap_config max77693_muic_regmap_config = { |
db1b9037 CC |
1011 | .reg_bits = 8, |
1012 | .val_bits = 8, | |
1013 | }; | |
1014 | ||
1015 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
1016 | { | |
1017 | int ret = 0; | |
154f757f CC |
1018 | int adc; |
1019 | int chg_type; | |
1020 | bool attached; | |
db1b9037 CC |
1021 | |
1022 | mutex_lock(&info->mutex); | |
1023 | ||
1024 | /* Read STATUSx register to detect accessory */ | |
d0540f91 RB |
1025 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
1026 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
1027 | if (ret) { |
1028 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1029 | mutex_unlock(&info->mutex); | |
c2536543 | 1030 | return ret; |
db1b9037 CC |
1031 | } |
1032 | ||
154f757f CC |
1033 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1034 | &attached); | |
1035 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1036 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1037 | if (ret < 0) { |
154f757f | 1038 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1039 | mutex_unlock(&info->mutex); |
1040 | return ret; | |
1041 | } | |
db1b9037 CC |
1042 | } |
1043 | ||
154f757f CC |
1044 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1045 | &attached); | |
1046 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1047 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1048 | if (ret < 0) { |
154f757f | 1049 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1050 | mutex_unlock(&info->mutex); |
1051 | return ret; | |
1052 | } | |
db1b9037 CC |
1053 | } |
1054 | ||
db1b9037 | 1055 | mutex_unlock(&info->mutex); |
154f757f | 1056 | |
19d3243e | 1057 | return 0; |
db1b9037 CC |
1058 | } |
1059 | ||
297620fd CC |
1060 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1061 | { | |
1062 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1063 | struct max77693_muic_info, wq_detcable); | |
1064 | ||
1065 | max77693_muic_detect_accessory(info); | |
1066 | } | |
1067 | ||
44f34fd4 | 1068 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1069 | { |
1070 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 | 1071 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
db1b9037 | 1072 | struct max77693_muic_info *info; |
0ec83bd2 CC |
1073 | struct max77693_reg_data *init_data; |
1074 | int num_init_data; | |
297620fd CC |
1075 | int delay_jiffies; |
1076 | int ret; | |
1077 | int i; | |
d0540f91 | 1078 | unsigned int id; |
db1b9037 | 1079 | |
f4bb5cb5 SK |
1080 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1081 | GFP_KERNEL); | |
0a16ee63 | 1082 | if (!info) |
f4bb5cb5 | 1083 | return -ENOMEM; |
0a16ee63 | 1084 | |
db1b9037 CC |
1085 | info->dev = &pdev->dev; |
1086 | info->max77693 = max77693; | |
1967fa08 | 1087 | if (info->max77693->regmap_muic) { |
b186b124 | 1088 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1089 | } else { |
b186b124 CC |
1090 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
1091 | info->max77693->muic, | |
1092 | &max77693_muic_regmap_config); | |
1093 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1094 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1095 | dev_err(max77693->dev, | |
1096 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1097 | return ret; |
b186b124 | 1098 | } |
db1b9037 | 1099 | } |
39bf369e CC |
1100 | |
1101 | /* Register input device for button of dock device */ | |
eff7d74f | 1102 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1103 | if (!info->dock) { |
1104 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1105 | return -ENOMEM; | |
1106 | } | |
1107 | info->dock->name = "max77693-muic/dock"; | |
1108 | info->dock->phys = "max77693-muic/extcon"; | |
1109 | info->dock->dev.parent = &pdev->dev; | |
1110 | ||
1111 | __set_bit(EV_REP, info->dock->evbit); | |
1112 | ||
1113 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1114 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1115 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1116 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1117 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1118 | ||
1119 | ret = input_register_device(info->dock); | |
1120 | if (ret < 0) { | |
1121 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1122 | ret); | |
1123 | return ret; | |
1124 | } | |
1125 | ||
db1b9037 CC |
1126 | platform_set_drvdata(pdev, info); |
1127 | mutex_init(&info->mutex); | |
1128 | ||
1129 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); | |
1130 | ||
1131 | /* Support irq domain for MAX77693 MUIC device */ | |
1132 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1133 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
00af4b16 | 1134 | unsigned int virq = 0; |
db1b9037 | 1135 | |
342d669c RB |
1136 | virq = regmap_irq_get_virq(max77693->irq_data_muic, |
1137 | muic_irq->irq); | |
d7155231 KK |
1138 | if (!virq) |
1139 | return -EINVAL; | |
db1b9037 CC |
1140 | muic_irq->virq = virq; |
1141 | ||
d7155231 | 1142 | ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, |
db1b9037 | 1143 | max77693_muic_irq_handler, |
ae3b3215 CC |
1144 | IRQF_NO_SUSPEND, |
1145 | muic_irq->name, info); | |
db1b9037 CC |
1146 | if (ret) { |
1147 | dev_err(&pdev->dev, | |
34825e51 | 1148 | "failed: irq request (IRQ: %d, error :%d)\n", |
db1b9037 | 1149 | muic_irq->irq, ret); |
d7155231 | 1150 | return ret; |
db1b9037 CC |
1151 | } |
1152 | } | |
1153 | ||
1154 | /* Initialize extcon device */ | |
577bef11 CC |
1155 | info->edev = devm_extcon_dev_allocate(&pdev->dev, |
1156 | max77693_extcon_cable); | |
1157 | if (IS_ERR(info->edev)) { | |
db1b9037 | 1158 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
d7155231 | 1159 | return -ENOMEM; |
db1b9037 | 1160 | } |
577bef11 | 1161 | |
10fae118 | 1162 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
db1b9037 CC |
1163 | if (ret) { |
1164 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
d7155231 | 1165 | return ret; |
db1b9037 CC |
1166 | } |
1167 | ||
0ec83bd2 | 1168 | /* Initialize MUIC register by using platform data or default data */ |
d5653f2b | 1169 | if (pdata && pdata->muic_data) { |
0ec83bd2 CC |
1170 | init_data = pdata->muic_data->init_data; |
1171 | num_init_data = pdata->muic_data->num_init_data; | |
1172 | } else { | |
1173 | init_data = default_init_data; | |
1174 | num_init_data = ARRAY_SIZE(default_init_data); | |
1175 | } | |
1176 | ||
a33411b2 | 1177 | for (i = 0; i < num_init_data; i++) { |
0ec83bd2 CC |
1178 | enum max77693_irq_source irq_src |
1179 | = MAX77693_IRQ_GROUP_NR; | |
190d7cfc | 1180 | |
d0540f91 | 1181 | regmap_write(info->max77693->regmap_muic, |
0ec83bd2 CC |
1182 | init_data[i].addr, |
1183 | init_data[i].data); | |
1184 | ||
1185 | switch (init_data[i].addr) { | |
1186 | case MAX77693_MUIC_REG_INTMASK1: | |
1187 | irq_src = MUIC_INT1; | |
1188 | break; | |
1189 | case MAX77693_MUIC_REG_INTMASK2: | |
1190 | irq_src = MUIC_INT2; | |
1191 | break; | |
1192 | case MAX77693_MUIC_REG_INTMASK3: | |
1193 | irq_src = MUIC_INT3; | |
1194 | break; | |
f8457d57 CC |
1195 | } |
1196 | ||
0ec83bd2 CC |
1197 | if (irq_src < MAX77693_IRQ_GROUP_NR) |
1198 | info->max77693->irq_masks_cur[irq_src] | |
1199 | = init_data[i].data; | |
1200 | } | |
1201 | ||
d5653f2b | 1202 | if (pdata && pdata->muic_data) { |
c2275d2f CC |
1203 | struct max77693_muic_platform_data *muic_pdata |
1204 | = pdata->muic_data; | |
0ec83bd2 | 1205 | |
190d7cfc CC |
1206 | /* |
1207 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1208 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1209 | */ | |
1210 | if (muic_pdata->path_uart) | |
1211 | info->path_uart = muic_pdata->path_uart; | |
1212 | else | |
1213 | info->path_uart = CONTROL1_SW_UART; | |
f8457d57 | 1214 | |
190d7cfc CC |
1215 | if (muic_pdata->path_usb) |
1216 | info->path_usb = muic_pdata->path_usb; | |
1217 | else | |
1218 | info->path_usb = CONTROL1_SW_USB; | |
2b75799f | 1219 | |
190d7cfc CC |
1220 | /* |
1221 | * Default delay time for detecting cable state | |
1222 | * after certain time. | |
1223 | */ | |
1224 | if (muic_pdata->detcable_delay_ms) | |
1225 | delay_jiffies = | |
1226 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1227 | else | |
1228 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1229 | } else { | |
2b75799f | 1230 | info->path_usb = CONTROL1_SW_USB; |
190d7cfc CC |
1231 | info->path_uart = CONTROL1_SW_UART; |
1232 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1233 | } | |
2b75799f CC |
1234 | |
1235 | /* Set initial path for UART */ | |
1236 | max77693_muic_set_path(info, info->path_uart, true); | |
1237 | ||
db1b9037 | 1238 | /* Check revision number of MUIC device*/ |
d0540f91 | 1239 | ret = regmap_read(info->max77693->regmap_muic, |
db1b9037 CC |
1240 | MAX77693_MUIC_REG_ID, &id); |
1241 | if (ret < 0) { | |
1242 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
d7155231 | 1243 | return ret; |
db1b9037 CC |
1244 | } |
1245 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1246 | ||
1247 | /* Set ADC debounce time */ | |
1248 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1249 | ||
297620fd CC |
1250 | /* |
1251 | * Detect accessory after completing the initialization of platform | |
1252 | * | |
1253 | * - Use delayed workqueue to detect cable state and then | |
1254 | * notify cable state to notifiee/platform through uevent. | |
1255 | * After completing the booting of platform, the extcon provider | |
1256 | * driver should notify cable state to upper layer. | |
1257 | */ | |
1258 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
b8629411 KK |
1259 | queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
1260 | delay_jiffies); | |
db1b9037 CC |
1261 | |
1262 | return ret; | |
db1b9037 CC |
1263 | } |
1264 | ||
93ed0327 | 1265 | static int max77693_muic_remove(struct platform_device *pdev) |
db1b9037 CC |
1266 | { |
1267 | struct max77693_muic_info *info = platform_get_drvdata(pdev); | |
db1b9037 | 1268 | |
db1b9037 | 1269 | cancel_work_sync(&info->irq_work); |
39bf369e | 1270 | input_unregister_device(info->dock); |
db1b9037 CC |
1271 | |
1272 | return 0; | |
1273 | } | |
1274 | ||
1275 | static struct platform_driver max77693_muic_driver = { | |
1276 | .driver = { | |
1277 | .name = DEV_NAME, | |
db1b9037 CC |
1278 | }, |
1279 | .probe = max77693_muic_probe, | |
5f7e2228 | 1280 | .remove = max77693_muic_remove, |
db1b9037 CC |
1281 | }; |
1282 | ||
1283 | module_platform_driver(max77693_muic_driver); | |
1284 | ||
1285 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1286 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1287 | MODULE_LICENSE("GPL"); | |
1288 | MODULE_ALIAS("platform:extcon-max77693"); |