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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> | |
61b305cd | 27 | #include <linux/mfd/max77693-common.h> |
db1b9037 CC |
28 | #include <linux/mfd/max77693-private.h> |
29 | #include <linux/extcon.h> | |
30 | #include <linux/regmap.h> | |
31 | #include <linux/irqdomain.h> | |
32 | ||
33 | #define DEV_NAME "max77693-muic" | |
297620fd | 34 | #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ |
db1b9037 | 35 | |
0ec83bd2 CC |
36 | /* |
37 | * Default value of MAX77693 register to bring up MUIC device. | |
38 | * If user don't set some initial value for MUIC device through platform data, | |
39 | * extcon-max77693 driver use 'default_init_data' to bring up base operation | |
40 | * of MAX77693 MUIC device. | |
41 | */ | |
813b4516 | 42 | static struct max77693_reg_data default_init_data[] = { |
0ec83bd2 CC |
43 | { |
44 | /* STATUS2 - [3]ChgDetRun */ | |
45 | .addr = MAX77693_MUIC_REG_STATUS2, | |
46 | .data = STATUS2_CHGDETRUN_MASK, | |
47 | }, { | |
48 | /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ | |
49 | .addr = MAX77693_MUIC_REG_INTMASK1, | |
50 | .data = INTMASK1_ADC1K_MASK | |
51 | | INTMASK1_ADC_MASK, | |
52 | }, { | |
53 | /* INTMASK2 - Unmask [0]ChgTypM */ | |
54 | .addr = MAX77693_MUIC_REG_INTMASK2, | |
55 | .data = INTMASK2_CHGTYP_MASK, | |
56 | }, { | |
57 | /* INTMASK3 - Mask all of interrupts */ | |
58 | .addr = MAX77693_MUIC_REG_INTMASK3, | |
59 | .data = 0x0, | |
60 | }, { | |
61 | /* CDETCTRL2 */ | |
62 | .addr = MAX77693_MUIC_REG_CDETCTRL2, | |
63 | .data = CDETCTRL2_VIDRMEN_MASK | |
64 | | CDETCTRL2_DXOVPEN_MASK, | |
65 | }, | |
66 | }; | |
67 | ||
db1b9037 CC |
68 | enum max77693_muic_adc_debounce_time { |
69 | ADC_DEBOUNCE_TIME_5MS = 0, | |
70 | ADC_DEBOUNCE_TIME_10MS, | |
71 | ADC_DEBOUNCE_TIME_25MS, | |
72 | ADC_DEBOUNCE_TIME_38_62MS, | |
73 | }; | |
74 | ||
75 | struct max77693_muic_info { | |
76 | struct device *dev; | |
77 | struct max77693_dev *max77693; | |
78 | struct extcon_dev *edev; | |
154f757f CC |
79 | int prev_cable_type; |
80 | int prev_cable_type_gnd; | |
db1b9037 | 81 | int prev_chg_type; |
39bf369e | 82 | int prev_button_type; |
db1b9037 CC |
83 | u8 status[2]; |
84 | ||
85 | int irq; | |
86 | struct work_struct irq_work; | |
87 | struct mutex mutex; | |
39bf369e | 88 | |
297620fd CC |
89 | /* |
90 | * Use delayed workqueue to detect cable state and then | |
91 | * notify cable state to notifiee/platform through uevent. | |
92 | * After completing the booting of platform, the extcon provider | |
93 | * driver should notify cable state to upper layer. | |
94 | */ | |
95 | struct delayed_work wq_detcable; | |
96 | ||
39bf369e CC |
97 | /* Button of dock device */ |
98 | struct input_dev *dock; | |
2b75799f CC |
99 | |
100 | /* | |
101 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
102 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
103 | */ | |
104 | int path_usb; | |
105 | int path_uart; | |
db1b9037 CC |
106 | }; |
107 | ||
154f757f CC |
108 | enum max77693_muic_cable_group { |
109 | MAX77693_CABLE_GROUP_ADC = 0, | |
110 | MAX77693_CABLE_GROUP_ADC_GND, | |
111 | MAX77693_CABLE_GROUP_CHG, | |
112 | MAX77693_CABLE_GROUP_VBVOLT, | |
113 | }; | |
114 | ||
db1b9037 CC |
115 | enum max77693_muic_charger_type { |
116 | MAX77693_CHARGER_TYPE_NONE = 0, | |
117 | MAX77693_CHARGER_TYPE_USB, | |
118 | MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, | |
119 | MAX77693_CHARGER_TYPE_DEDICATED_CHG, | |
120 | MAX77693_CHARGER_TYPE_APPLE_500MA, | |
121 | MAX77693_CHARGER_TYPE_APPLE_1A_2A, | |
122 | MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, | |
123 | }; | |
124 | ||
125 | /** | |
126 | * struct max77693_muic_irq | |
127 | * @irq: the index of irq list of MUIC device. | |
128 | * @name: the name of irq. | |
129 | * @virq: the virtual irq to use irq domain | |
130 | */ | |
131 | struct max77693_muic_irq { | |
132 | unsigned int irq; | |
133 | const char *name; | |
134 | unsigned int virq; | |
135 | }; | |
136 | ||
137 | static struct max77693_muic_irq muic_irqs[] = { | |
138 | { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, | |
139 | { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, | |
140 | { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, | |
141 | { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, | |
142 | { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, | |
143 | { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, | |
144 | { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, | |
145 | { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, | |
146 | { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, | |
147 | { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, | |
148 | { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, | |
149 | { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, | |
150 | { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, | |
151 | { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, | |
152 | { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, | |
153 | { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, | |
154 | }; | |
155 | ||
156 | /* Define supported accessory type */ | |
157 | enum max77693_muic_acc_type { | |
158 | MAX77693_MUIC_ADC_GROUND = 0x0, | |
159 | MAX77693_MUIC_ADC_SEND_END_BUTTON, | |
160 | MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, | |
161 | MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, | |
162 | MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, | |
163 | MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, | |
164 | MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, | |
165 | MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, | |
166 | MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, | |
167 | MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, | |
168 | MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, | |
169 | MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, | |
170 | MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, | |
171 | MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, | |
172 | MAX77693_MUIC_ADC_RESERVED_ACC_1, | |
173 | MAX77693_MUIC_ADC_RESERVED_ACC_2, | |
174 | MAX77693_MUIC_ADC_RESERVED_ACC_3, | |
175 | MAX77693_MUIC_ADC_RESERVED_ACC_4, | |
176 | MAX77693_MUIC_ADC_RESERVED_ACC_5, | |
177 | MAX77693_MUIC_ADC_CEA936_AUDIO, | |
178 | MAX77693_MUIC_ADC_PHONE_POWERED_DEV, | |
179 | MAX77693_MUIC_ADC_TTY_CONVERTER, | |
180 | MAX77693_MUIC_ADC_UART_CABLE, | |
181 | MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, | |
182 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, | |
183 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, | |
184 | MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, | |
185 | MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, | |
186 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, | |
187 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, | |
188 | MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, | |
189 | MAX77693_MUIC_ADC_OPEN, | |
190 | ||
191 | /* The below accessories have same ADC value so ADCLow and | |
192 | ADC1K bit is used to separate specific accessory */ | |
c2275d2f | 193 | /* ADC|VBVolot|ADCLow|ADC1K| */ |
4c883abe JK |
194 | MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */ |
195 | MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */ | |
c2275d2f CC |
196 | MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ |
197 | MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ | |
198 | MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ | |
db1b9037 CC |
199 | }; |
200 | ||
c2275d2f CC |
201 | /* |
202 | * MAX77693 MUIC device support below list of accessories(external connector) | |
203 | */ | |
73b6ecdb | 204 | static const unsigned int max77693_extcon_cable[] = { |
2a9de9c0 CC |
205 | EXTCON_USB, |
206 | EXTCON_USB_HOST, | |
207 | EXTCON_TA, | |
208 | EXTCON_FAST_CHARGER, | |
209 | EXTCON_SLOW_CHARGER, | |
210 | EXTCON_CHARGE_DOWNSTREAM, | |
211 | EXTCON_MHL, | |
212 | EXTCON_JIG, | |
213 | EXTCON_DOCK, | |
214 | EXTCON_NONE, | |
db1b9037 CC |
215 | }; |
216 | ||
154f757f CC |
217 | /* |
218 | * max77693_muic_set_debounce_time - Set the debounce time of ADC | |
219 | * @info: the instance including private data of max77693 MUIC | |
220 | * @time: the debounce time of ADC | |
221 | */ | |
db1b9037 CC |
222 | static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
223 | enum max77693_muic_adc_debounce_time time) | |
224 | { | |
bf2627d6 | 225 | int ret; |
db1b9037 CC |
226 | |
227 | switch (time) { | |
228 | case ADC_DEBOUNCE_TIME_5MS: | |
229 | case ADC_DEBOUNCE_TIME_10MS: | |
230 | case ADC_DEBOUNCE_TIME_25MS: | |
231 | case ADC_DEBOUNCE_TIME_38_62MS: | |
dc6048d7 JL |
232 | /* |
233 | * Don't touch BTLDset, JIGset when you want to change adc | |
234 | * debounce time. If it writes other than 0 to BTLDset, JIGset | |
235 | * muic device will be reset and loose current state. | |
236 | */ | |
237 | ret = regmap_write(info->max77693->regmap_muic, | |
238 | MAX77693_MUIC_REG_CTRL3, | |
239 | time << CONTROL3_ADCDBSET_SHIFT); | |
19d3243e | 240 | if (ret) { |
db1b9037 | 241 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
c2536543 | 242 | return ret; |
19d3243e | 243 | } |
db1b9037 CC |
244 | break; |
245 | default: | |
246 | dev_err(info->dev, "invalid ADC debounce time\n"); | |
19d3243e | 247 | return -EINVAL; |
db1b9037 CC |
248 | } |
249 | ||
19d3243e | 250 | return 0; |
db1b9037 CC |
251 | }; |
252 | ||
154f757f CC |
253 | /* |
254 | * max77693_muic_set_path - Set hardware line according to attached cable | |
255 | * @info: the instance including private data of max77693 MUIC | |
256 | * @value: the path according to attached cable | |
257 | * @attached: the state of cable (true:attached, false:detached) | |
258 | * | |
259 | * The max77693 MUIC device share outside H/W line among a varity of cables | |
260 | * so, this function set internal path of H/W line according to the type of | |
261 | * attached cable. | |
262 | */ | |
db1b9037 CC |
263 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
264 | u8 val, bool attached) | |
265 | { | |
266 | int ret = 0; | |
d0540f91 | 267 | unsigned int ctrl1, ctrl2 = 0; |
db1b9037 CC |
268 | |
269 | if (attached) | |
270 | ctrl1 = val; | |
271 | else | |
272 | ctrl1 = CONTROL1_SW_OPEN; | |
273 | ||
d0540f91 RB |
274 | ret = regmap_update_bits(info->max77693->regmap_muic, |
275 | MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); | |
db1b9037 CC |
276 | if (ret < 0) { |
277 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 278 | return ret; |
db1b9037 CC |
279 | } |
280 | ||
281 | if (attached) | |
282 | ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ | |
283 | else | |
284 | ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ | |
285 | ||
d0540f91 RB |
286 | ret = regmap_update_bits(info->max77693->regmap_muic, |
287 | MAX77693_MUIC_REG_CTRL2, | |
288 | CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2); | |
db1b9037 CC |
289 | if (ret < 0) { |
290 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 291 | return ret; |
db1b9037 CC |
292 | } |
293 | ||
294 | dev_info(info->dev, | |
295 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
296 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
297 | |
298 | return 0; | |
db1b9037 CC |
299 | } |
300 | ||
154f757f CC |
301 | /* |
302 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
303 | * @info: the instance including private data of max77693 MUIC | |
304 | * @group: the path according to attached cable | |
305 | * @attached: store cable state and return | |
306 | * | |
307 | * This function check the cable state either attached or detached, | |
308 | * and then divide precise type of cable according to cable group. | |
309 | * - MAX77693_CABLE_GROUP_ADC | |
310 | * - MAX77693_CABLE_GROUP_ADC_GND | |
311 | * - MAX77693_CABLE_GROUP_CHG | |
312 | * - MAX77693_CABLE_GROUP_VBVOLT | |
313 | */ | |
314 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
315 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 316 | { |
154f757f CC |
317 | int cable_type = 0; |
318 | int adc; | |
319 | int adc1k; | |
320 | int adclow; | |
321 | int vbvolt; | |
322 | int chg_type; | |
323 | ||
324 | switch (group) { | |
325 | case MAX77693_CABLE_GROUP_ADC: | |
326 | /* | |
327 | * Read ADC value to check cable type and decide cable state | |
328 | * according to cable type | |
329 | */ | |
330 | adc = info->status[0] & STATUS1_ADC_MASK; | |
331 | adc >>= STATUS1_ADC_SHIFT; | |
332 | ||
333 | /* | |
334 | * Check current cable state/cable type and store cable type | |
335 | * (info->prev_cable_type) for handling cable when cable is | |
336 | * detached. | |
337 | */ | |
338 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
339 | *attached = false; | |
340 | ||
341 | cable_type = info->prev_cable_type; | |
342 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
343 | } else { | |
344 | *attached = true; | |
345 | ||
346 | cable_type = info->prev_cable_type = adc; | |
347 | } | |
348 | break; | |
349 | case MAX77693_CABLE_GROUP_ADC_GND: | |
350 | /* | |
351 | * Read ADC value to check cable type and decide cable state | |
352 | * according to cable type | |
353 | */ | |
354 | adc = info->status[0] & STATUS1_ADC_MASK; | |
355 | adc >>= STATUS1_ADC_SHIFT; | |
db1b9037 | 356 | |
154f757f CC |
357 | /* |
358 | * Check current cable state/cable type and store cable type | |
359 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
360 | * is detached. | |
361 | */ | |
362 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
363 | *attached = false; | |
364 | ||
365 | cable_type = info->prev_cable_type_gnd; | |
366 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
367 | } else { | |
368 | *attached = true; | |
369 | ||
370 | adclow = info->status[0] & STATUS1_ADCLOW_MASK; | |
371 | adclow >>= STATUS1_ADCLOW_SHIFT; | |
372 | adc1k = info->status[0] & STATUS1_ADC1K_MASK; | |
373 | adc1k >>= STATUS1_ADC1K_SHIFT; | |
374 | ||
375 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; | |
376 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
377 | ||
378 | /** | |
c2275d2f | 379 | * [0x1|VBVolt|ADCLow|ADC1K] |
4c883abe JK |
380 | * [0x1| 0| 0| 0] USB_HOST |
381 | * [0x1| 1| 0| 0] USB_HSOT_VB | |
c2275d2f CC |
382 | * [0x1| 0| 1| 0] Audio Video cable with load |
383 | * [0x1| 0| 1| 1] MHL without charging cable | |
384 | * [0x1| 1| 1| 1] MHL with charging cable | |
154f757f CC |
385 | */ |
386 | cable_type = ((0x1 << 8) | |
387 | | (vbvolt << 2) | |
388 | | (adclow << 1) | |
389 | | adc1k); | |
390 | ||
391 | info->prev_cable_type = adc; | |
392 | info->prev_cable_type_gnd = cable_type; | |
393 | } | |
394 | ||
395 | break; | |
396 | case MAX77693_CABLE_GROUP_CHG: | |
397 | /* | |
398 | * Read charger type to check cable type and decide cable state | |
399 | * according to type of charger cable. | |
400 | */ | |
401 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
402 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
403 | ||
404 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
405 | *attached = false; | |
406 | ||
407 | cable_type = info->prev_chg_type; | |
408 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
409 | } else { | |
410 | *attached = true; | |
411 | ||
412 | /* | |
413 | * Check current cable state/cable type and store cable | |
414 | * type(info->prev_chg_type) for handling cable when | |
415 | * charger cable is detached. | |
416 | */ | |
417 | cable_type = info->prev_chg_type = chg_type; | |
418 | } | |
419 | ||
420 | break; | |
421 | case MAX77693_CABLE_GROUP_VBVOLT: | |
422 | /* | |
423 | * Read ADC value to check cable type and decide cable state | |
424 | * according to cable type | |
425 | */ | |
db1b9037 | 426 | adc = info->status[0] & STATUS1_ADC_MASK; |
154f757f CC |
427 | adc >>= STATUS1_ADC_SHIFT; |
428 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
429 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
430 | ||
431 | if (adc == MAX77693_MUIC_ADC_OPEN | |
432 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
433 | *attached = false; | |
434 | else | |
435 | *attached = true; | |
436 | ||
437 | /* | |
438 | * Read vbvolt field, if vbvolt is 1, | |
439 | * this cable is used for charging. | |
db1b9037 | 440 | */ |
154f757f CC |
441 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
442 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
443 | ||
444 | cable_type = vbvolt; | |
445 | break; | |
446 | default: | |
447 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
448 | cable_type = -EINVAL; | |
449 | break; | |
450 | } | |
451 | ||
452 | return cable_type; | |
453 | } | |
454 | ||
39bf369e CC |
455 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
456 | int cable_type, bool attached) | |
457 | { | |
458 | int ret = 0; | |
a1626298 CC |
459 | int vbvolt; |
460 | bool cable_attached; | |
73b6ecdb | 461 | unsigned int dock_id; |
39bf369e CC |
462 | |
463 | dev_info(info->dev, | |
464 | "external connector is %s (adc:0x%02x)\n", | |
465 | attached ? "attached" : "detached", cable_type); | |
466 | ||
467 | switch (cable_type) { | |
468 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
469 | /* |
470 | * Check power cable whether attached or detached state. | |
471 | * The Dock-Smart device need surely external power supply. | |
472 | * If power cable(USB/TA) isn't connected to Dock device, | |
473 | * user can't use Dock-Smart for desktop mode. | |
474 | */ | |
475 | vbvolt = max77693_muic_get_cable_type(info, | |
476 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
477 | if (attached && !vbvolt) { | |
478 | dev_warn(info->dev, | |
479 | "Cannot detect external power supply\n"); | |
480 | return 0; | |
481 | } | |
482 | ||
483 | /* | |
d519c423 CC |
484 | * Notify Dock/MHL state. |
485 | * - Dock device include three type of cable which | |
a1626298 | 486 | * are HDMI, USB for mouse/keyboard and micro-usb port |
d519c423 CC |
487 | * for USB/TA cable. Dock device need always exteranl |
488 | * power supply(USB/TA cable through micro-usb cable). Dock | |
489 | * device support screen output of target to separate | |
a1626298 CC |
490 | * monitor and mouse/keyboard for desktop mode. |
491 | * | |
d519c423 | 492 | * Features of 'USB/TA cable with Dock device' |
a1626298 CC |
493 | * - Support MHL |
494 | * - Support external output feature of audio | |
495 | * - Support charging through micro-usb port without data | |
496 | * connection if TA cable is connected to target. | |
497 | * - Support charging and data connection through micro-usb port | |
498 | * if USB cable is connected between target and host | |
499 | * device. | |
4c883abe | 500 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 CC |
501 | */ |
502 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 503 | if (ret < 0) |
a1626298 | 504 | return ret; |
39bf369e | 505 | |
2a9de9c0 CC |
506 | extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached); |
507 | extcon_set_cable_state_(info->edev, EXTCON_MHL, attached); | |
39bf369e | 508 | goto out; |
39bf369e | 509 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
2a9de9c0 | 510 | dock_id = EXTCON_DOCK; |
39bf369e CC |
511 | break; |
512 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
2a9de9c0 | 513 | dock_id = EXTCON_DOCK; |
39bf369e | 514 | if (!attached) |
2a9de9c0 | 515 | extcon_set_cable_state_(info->edev, EXTCON_USB, false); |
39bf369e | 516 | break; |
19d3243e CC |
517 | default: |
518 | dev_err(info->dev, "failed to detect %s dock device\n", | |
519 | attached ? "attached" : "detached"); | |
520 | return -EINVAL; | |
39bf369e CC |
521 | } |
522 | ||
523 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
524 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); | |
525 | if (ret < 0) | |
a1626298 | 526 | return ret; |
2a9de9c0 | 527 | extcon_set_cable_state_(info->edev, dock_id, attached); |
39bf369e CC |
528 | |
529 | out: | |
a1626298 | 530 | return 0; |
39bf369e CC |
531 | } |
532 | ||
533 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
534 | int button_type, bool attached) | |
535 | { | |
536 | struct input_dev *dock = info->dock; | |
537 | unsigned int code; | |
39bf369e CC |
538 | |
539 | switch (button_type) { | |
540 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
541 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
542 | /* DOCK_KEY_PREV */ | |
543 | code = KEY_PREVIOUSSONG; | |
544 | break; | |
545 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
546 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
547 | /* DOCK_KEY_NEXT */ | |
548 | code = KEY_NEXTSONG; | |
549 | break; | |
550 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
551 | /* DOCK_VOL_DOWN */ | |
552 | code = KEY_VOLUMEDOWN; | |
553 | break; | |
554 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
555 | /* DOCK_VOL_UP */ | |
556 | code = KEY_VOLUMEUP; | |
557 | break; | |
558 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
559 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
560 | /* DOCK_KEY_PLAY_PAUSE */ | |
561 | code = KEY_PLAYPAUSE; | |
562 | break; | |
563 | default: | |
564 | dev_err(info->dev, | |
565 | "failed to detect %s key (adc:0x%x)\n", | |
566 | attached ? "pressed" : "released", button_type); | |
19d3243e | 567 | return -EINVAL; |
39bf369e CC |
568 | } |
569 | ||
570 | input_event(dock, EV_KEY, code, attached); | |
571 | input_sync(dock); | |
572 | ||
39bf369e CC |
573 | return 0; |
574 | } | |
575 | ||
154f757f CC |
576 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
577 | { | |
578 | int cable_type_gnd; | |
579 | int ret = 0; | |
580 | bool attached; | |
db1b9037 | 581 | |
154f757f CC |
582 | cable_type_gnd = max77693_muic_get_cable_type(info, |
583 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 584 | |
154f757f | 585 | switch (cable_type_gnd) { |
4c883abe JK |
586 | case MAX77693_MUIC_GND_USB_HOST: |
587 | case MAX77693_MUIC_GND_USB_HOST_VB: | |
588 | /* USB_HOST, PATH: AP_USB */ | |
db1b9037 CC |
589 | ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
590 | if (ret < 0) | |
19d3243e | 591 | return ret; |
2a9de9c0 | 592 | extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached); |
db1b9037 CC |
593 | break; |
594 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 595 | /* Audio Video Cable with load, PATH:AUDIO */ |
db1b9037 CC |
596 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
597 | if (ret < 0) | |
19d3243e | 598 | return ret; |
2a9de9c0 | 599 | extcon_set_cable_state_(info->edev, EXTCON_USB, attached); |
db1b9037 | 600 | break; |
06bed0af CC |
601 | case MAX77693_MUIC_GND_MHL: |
602 | case MAX77693_MUIC_GND_MHL_VB: | |
603 | /* MHL or MHL with USB/TA cable */ | |
2a9de9c0 | 604 | extcon_set_cable_state_(info->edev, EXTCON_MHL, attached); |
db1b9037 CC |
605 | break; |
606 | default: | |
19d3243e | 607 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 608 | attached ? "attached" : "detached"); |
19d3243e | 609 | return -EINVAL; |
db1b9037 CC |
610 | } |
611 | ||
19d3243e | 612 | return 0; |
db1b9037 CC |
613 | } |
614 | ||
d0587eb7 CC |
615 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
616 | int cable_type, bool attached) | |
617 | { | |
d0587eb7 CC |
618 | int ret = 0; |
619 | u8 path = CONTROL1_SW_OPEN; | |
620 | ||
621 | dev_info(info->dev, | |
622 | "external connector is %s (adc:0x%02x)\n", | |
623 | attached ? "attached" : "detached", cable_type); | |
624 | ||
625 | switch (cable_type) { | |
626 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
d0587eb7 CC |
627 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ |
628 | /* PATH:AP_USB */ | |
d0587eb7 CC |
629 | path = CONTROL1_SW_USB; |
630 | break; | |
631 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
c22159a2 KK |
632 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */ |
633 | /* PATH:AP_UART */ | |
c22159a2 KK |
634 | path = CONTROL1_SW_UART; |
635 | break; | |
19d3243e CC |
636 | default: |
637 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
638 | attached ? "attached" : "detached"); | |
639 | return -EINVAL; | |
d0587eb7 CC |
640 | } |
641 | ||
642 | ret = max77693_muic_set_path(info, path, attached); | |
643 | if (ret < 0) | |
19d3243e | 644 | return ret; |
d0587eb7 | 645 | |
2a9de9c0 | 646 | extcon_set_cable_state_(info->edev, EXTCON_JIG, attached); |
19d3243e CC |
647 | |
648 | return 0; | |
d0587eb7 CC |
649 | } |
650 | ||
154f757f | 651 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 652 | { |
154f757f | 653 | int cable_type; |
39bf369e | 654 | int button_type; |
154f757f | 655 | bool attached; |
db1b9037 | 656 | int ret = 0; |
db1b9037 | 657 | |
154f757f CC |
658 | /* Check accessory state which is either detached or attached */ |
659 | cable_type = max77693_muic_get_cable_type(info, | |
660 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
661 | |
662 | dev_info(info->dev, | |
663 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
664 | attached ? "attached" : "detached", cable_type, |
665 | info->prev_cable_type); | |
db1b9037 | 666 | |
154f757f | 667 | switch (cable_type) { |
db1b9037 | 668 | case MAX77693_MUIC_ADC_GROUND: |
4c883abe | 669 | /* USB_HOST/MHL/Audio */ |
154f757f | 670 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
671 | break; |
672 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
673 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 674 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
c22159a2 | 675 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: |
db1b9037 | 676 | /* JIG */ |
d0587eb7 | 677 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 678 | if (ret < 0) |
19d3243e | 679 | return ret; |
db1b9037 | 680 | break; |
39bf369e | 681 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
39bf369e CC |
682 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
683 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
684 | /* | |
685 | * DOCK device | |
686 | * | |
687 | * The MAX77693 MUIC device can detect total 34 cable type | |
688 | * except of charger cable and MUIC device didn't define | |
689 | * specfic role of cable in the range of from 0x01 to 0x12 | |
690 | * of ADC value. So, can use/define cable with no role according | |
691 | * to schema of hardware board. | |
692 | */ | |
693 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
694 | if (ret < 0) | |
19d3243e | 695 | return ret; |
39bf369e | 696 | break; |
c2275d2f CC |
697 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
698 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
699 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
700 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
701 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
39bf369e CC |
702 | /* |
703 | * Button of DOCK device | |
704 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
705 | * | |
706 | * The MAX77693 MUIC device can detect total 34 cable type | |
707 | * except of charger cable and MUIC device didn't define | |
708 | * specfic role of cable in the range of from 0x01 to 0x12 | |
709 | * of ADC value. So, can use/define cable with no role according | |
710 | * to schema of hardware board. | |
711 | */ | |
712 | if (attached) | |
713 | button_type = info->prev_button_type = cable_type; | |
714 | else | |
715 | button_type = info->prev_button_type; | |
716 | ||
717 | ret = max77693_muic_dock_button_handler(info, button_type, | |
718 | attached); | |
db1b9037 | 719 | if (ret < 0) |
19d3243e | 720 | return ret; |
db1b9037 CC |
721 | break; |
722 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
723 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
724 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
725 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
726 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
727 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 728 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 729 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
730 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
731 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
732 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
733 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
734 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
735 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
736 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
737 | case MAX77693_MUIC_ADC_UART_CABLE: | |
738 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 739 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
740 | /* |
741 | * This accessory isn't used in general case if it is specially | |
742 | * needed to detect additional accessory, should implement | |
743 | * proper operation when this accessory is attached/detached. | |
744 | */ | |
db1b9037 CC |
745 | dev_info(info->dev, |
746 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 747 | attached ? "attached" : "detached", cable_type); |
19d3243e | 748 | return -EAGAIN; |
db1b9037 CC |
749 | default: |
750 | dev_err(info->dev, | |
751 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 752 | attached ? "attached" : "detached", cable_type); |
19d3243e | 753 | return -EINVAL; |
db1b9037 CC |
754 | } |
755 | ||
19d3243e | 756 | return 0; |
db1b9037 CC |
757 | } |
758 | ||
154f757f | 759 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 760 | { |
db1b9037 | 761 | int chg_type; |
06bed0af | 762 | int cable_type_gnd; |
39bf369e | 763 | int cable_type; |
154f757f | 764 | bool attached; |
06bed0af | 765 | bool cable_attached; |
154f757f | 766 | int ret = 0; |
db1b9037 | 767 | |
154f757f CC |
768 | chg_type = max77693_muic_get_cable_type(info, |
769 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
770 | |
771 | dev_info(info->dev, | |
772 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
773 | attached ? "attached" : "detached", | |
154f757f | 774 | chg_type, info->prev_chg_type); |
db1b9037 CC |
775 | |
776 | switch (chg_type) { | |
777 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 778 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 779 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 780 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
781 | cable_type_gnd = max77693_muic_get_cable_type(info, |
782 | MAX77693_CABLE_GROUP_ADC_GND, | |
783 | &cable_attached); | |
a1626298 CC |
784 | switch (cable_type_gnd) { |
785 | case MAX77693_MUIC_GND_MHL: | |
786 | case MAX77693_MUIC_GND_MHL_VB: | |
787 | /* | |
942e0239 | 788 | * MHL cable with USB/TA cable |
c2275d2f CC |
789 | * - MHL cable include two port(HDMI line and separate |
790 | * micro-usb port. When the target connect MHL cable, | |
942e0239 CC |
791 | * extcon driver check whether USB/TA cable is |
792 | * connected. If USB/TA cable is connected, extcon | |
c2275d2f | 793 | * driver notify state to notifiee for charging battery. |
a1626298 | 794 | * |
942e0239 | 795 | * Features of 'USB/TA with MHL cable' |
a1626298 | 796 | * - Support MHL |
c2275d2f CC |
797 | * - Support charging through micro-usb port without |
798 | * data connection | |
a1626298 | 799 | */ |
2a9de9c0 | 800 | extcon_set_cable_state_(info->edev, EXTCON_TA, attached); |
06bed0af | 801 | if (!cable_attached) |
2a9de9c0 CC |
802 | extcon_set_cable_state_(info->edev, EXTCON_MHL, |
803 | cable_attached); | |
a1626298 | 804 | break; |
39bf369e CC |
805 | } |
806 | ||
a1626298 | 807 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
808 | cable_type = max77693_muic_get_cable_type(info, |
809 | MAX77693_CABLE_GROUP_ADC, | |
810 | &cable_attached); | |
a1626298 CC |
811 | switch (cable_type) { |
812 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
813 | /* | |
814 | * Dock-Audio device with USB/TA cable | |
c2275d2f CC |
815 | * - Dock device include two port(Dock-Audio and micro- |
816 | * usb port). When the target connect Dock-Audio device, | |
817 | * extcon driver check whether USB/TA cable is connected | |
818 | * or not. If USB/TA cable is connected, extcon driver | |
819 | * notify state to notifiee for charging battery. | |
a1626298 CC |
820 | * |
821 | * Features of 'USB/TA cable with Dock-Audio device' | |
822 | * - Support external output feature of audio. | |
c2275d2f CC |
823 | * - Support charging through micro-usb port without |
824 | * data connection. | |
a1626298 | 825 | */ |
2a9de9c0 CC |
826 | extcon_set_cable_state_(info->edev, EXTCON_USB, |
827 | attached); | |
39bf369e CC |
828 | |
829 | if (!cable_attached) | |
2a9de9c0 CC |
830 | extcon_set_cable_state_(info->edev, EXTCON_DOCK, |
831 | cable_attached); | |
a1626298 CC |
832 | break; |
833 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
834 | /* | |
835 | * Dock-Smart device with USB/TA cable | |
836 | * - Dock-Desk device include three type of cable which | |
837 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
c2275d2f CC |
838 | * for USB/TA cable. Dock-Smart device need always |
839 | * exteranl power supply(USB/TA cable through micro-usb | |
840 | * cable). Dock-Smart device support screen output of | |
841 | * target to separate monitor and mouse/keyboard for | |
842 | * desktop mode. | |
a1626298 CC |
843 | * |
844 | * Features of 'USB/TA cable with Dock-Smart device' | |
845 | * - Support MHL | |
846 | * - Support external output feature of audio | |
c2275d2f CC |
847 | * - Support charging through micro-usb port without |
848 | * data connection if TA cable is connected to target. | |
849 | * - Support charging and data connection through micro- | |
850 | * usb port if USB cable is connected between target | |
851 | * and host device | |
4c883abe | 852 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 | 853 | */ |
c2275d2f CC |
854 | ret = max77693_muic_set_path(info, info->path_usb, |
855 | attached); | |
a1626298 CC |
856 | if (ret < 0) |
857 | return ret; | |
858 | ||
2a9de9c0 CC |
859 | extcon_set_cable_state_(info->edev, EXTCON_DOCK, |
860 | attached); | |
861 | extcon_set_cable_state_(info->edev, EXTCON_MHL, | |
862 | attached); | |
a1626298 | 863 | break; |
06bed0af | 864 | } |
39bf369e | 865 | |
a1626298 CC |
866 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
867 | switch (chg_type) { | |
868 | case MAX77693_CHARGER_TYPE_NONE: | |
869 | /* | |
c2275d2f CC |
870 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
871 | * cable is attached, muic device happen below two irq. | |
872 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting | |
873 | * MHL/Dock-Audio. | |
874 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting | |
875 | * USB/TA cable connected to MHL or Dock-Audio. | |
876 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC | |
877 | * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. | |
a1626298 | 878 | * |
c2275d2f CC |
879 | * If user attach MHL (with USB/TA cable and immediately |
880 | * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ | |
881 | * _INT2_CHGTYP irq is happened, USB/TA cable remain | |
882 | * connected state to target. But USB/TA cable isn't | |
883 | * connected to target. The user be face with unusual | |
884 | * action. So, driver should check this situation in | |
885 | * spite of, that previous charger type is N/A. | |
a1626298 | 886 | */ |
0e2738f5 | 887 | break; |
a1626298 CC |
888 | case MAX77693_CHARGER_TYPE_USB: |
889 | /* Only USB cable, PATH:AP_USB */ | |
c2275d2f CC |
890 | ret = max77693_muic_set_path(info, info->path_usb, |
891 | attached); | |
a1626298 CC |
892 | if (ret < 0) |
893 | return ret; | |
0e2738f5 | 894 | |
2a9de9c0 CC |
895 | extcon_set_cable_state_(info->edev, EXTCON_USB, |
896 | attached); | |
a1626298 CC |
897 | break; |
898 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
899 | /* Only TA cable */ | |
2a9de9c0 | 900 | extcon_set_cable_state_(info->edev, EXTCON_TA, attached); |
a1626298 CC |
901 | break; |
902 | } | |
db1b9037 CC |
903 | break; |
904 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
2a9de9c0 CC |
905 | extcon_set_cable_state_(info->edev, EXTCON_CHARGE_DOWNSTREAM, |
906 | attached); | |
db1b9037 | 907 | break; |
db1b9037 | 908 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
2a9de9c0 CC |
909 | extcon_set_cable_state_(info->edev, EXTCON_SLOW_CHARGER, |
910 | attached); | |
db1b9037 CC |
911 | break; |
912 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
2a9de9c0 CC |
913 | extcon_set_cable_state_(info->edev, EXTCON_FAST_CHARGER, |
914 | attached); | |
db1b9037 CC |
915 | break; |
916 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
917 | break; | |
918 | default: | |
919 | dev_err(info->dev, | |
920 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
921 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 922 | return -EINVAL; |
db1b9037 CC |
923 | } |
924 | ||
a1626298 | 925 | return 0; |
db1b9037 CC |
926 | } |
927 | ||
928 | static void max77693_muic_irq_work(struct work_struct *work) | |
929 | { | |
930 | struct max77693_muic_info *info = container_of(work, | |
931 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
932 | int irq_type = -1; |
933 | int i, ret = 0; | |
db1b9037 CC |
934 | |
935 | if (!info->edev) | |
936 | return; | |
937 | ||
938 | mutex_lock(&info->mutex); | |
939 | ||
a33411b2 | 940 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
db1b9037 CC |
941 | if (info->irq == muic_irqs[i].virq) |
942 | irq_type = muic_irqs[i].irq; | |
943 | ||
d0540f91 RB |
944 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
945 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
946 | if (ret) { |
947 | dev_err(info->dev, "failed to read MUIC register\n"); | |
948 | mutex_unlock(&info->mutex); | |
949 | return; | |
950 | } | |
951 | ||
952 | switch (irq_type) { | |
953 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
954 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
955 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
956 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
957 | /* Handle all of accessory except for | |
958 | type of charger accessory */ | |
154f757f | 959 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
960 | break; |
961 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
962 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
963 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
964 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
965 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
966 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
967 | /* Handle charger accessory */ | |
154f757f | 968 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
969 | break; |
970 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
971 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
972 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
973 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
974 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
975 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
976 | break; | |
977 | default: | |
978 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
979 | irq_type); | |
19d3243e CC |
980 | mutex_unlock(&info->mutex); |
981 | return; | |
db1b9037 CC |
982 | } |
983 | ||
984 | if (ret < 0) | |
985 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
986 | ||
987 | mutex_unlock(&info->mutex); | |
db1b9037 CC |
988 | } |
989 | ||
990 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
991 | { | |
992 | struct max77693_muic_info *info = data; | |
993 | ||
994 | info->irq = irq; | |
995 | schedule_work(&info->irq_work); | |
996 | ||
997 | return IRQ_HANDLED; | |
998 | } | |
999 | ||
65948900 | 1000 | static const struct regmap_config max77693_muic_regmap_config = { |
db1b9037 CC |
1001 | .reg_bits = 8, |
1002 | .val_bits = 8, | |
1003 | }; | |
1004 | ||
1005 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
1006 | { | |
1007 | int ret = 0; | |
154f757f CC |
1008 | int adc; |
1009 | int chg_type; | |
1010 | bool attached; | |
db1b9037 CC |
1011 | |
1012 | mutex_lock(&info->mutex); | |
1013 | ||
1014 | /* Read STATUSx register to detect accessory */ | |
d0540f91 RB |
1015 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
1016 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
1017 | if (ret) { |
1018 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1019 | mutex_unlock(&info->mutex); | |
c2536543 | 1020 | return ret; |
db1b9037 CC |
1021 | } |
1022 | ||
154f757f CC |
1023 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1024 | &attached); | |
1025 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1026 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1027 | if (ret < 0) { |
154f757f | 1028 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1029 | mutex_unlock(&info->mutex); |
1030 | return ret; | |
1031 | } | |
db1b9037 CC |
1032 | } |
1033 | ||
154f757f CC |
1034 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1035 | &attached); | |
1036 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1037 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1038 | if (ret < 0) { |
154f757f | 1039 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1040 | mutex_unlock(&info->mutex); |
1041 | return ret; | |
1042 | } | |
db1b9037 CC |
1043 | } |
1044 | ||
db1b9037 | 1045 | mutex_unlock(&info->mutex); |
154f757f | 1046 | |
19d3243e | 1047 | return 0; |
db1b9037 CC |
1048 | } |
1049 | ||
297620fd CC |
1050 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1051 | { | |
1052 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1053 | struct max77693_muic_info, wq_detcable); | |
1054 | ||
1055 | max77693_muic_detect_accessory(info); | |
1056 | } | |
1057 | ||
44f34fd4 | 1058 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1059 | { |
1060 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 | 1061 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
db1b9037 | 1062 | struct max77693_muic_info *info; |
0ec83bd2 CC |
1063 | struct max77693_reg_data *init_data; |
1064 | int num_init_data; | |
297620fd CC |
1065 | int delay_jiffies; |
1066 | int ret; | |
1067 | int i; | |
d0540f91 | 1068 | unsigned int id; |
db1b9037 | 1069 | |
f4bb5cb5 SK |
1070 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1071 | GFP_KERNEL); | |
0a16ee63 | 1072 | if (!info) |
f4bb5cb5 | 1073 | return -ENOMEM; |
0a16ee63 | 1074 | |
db1b9037 CC |
1075 | info->dev = &pdev->dev; |
1076 | info->max77693 = max77693; | |
1967fa08 | 1077 | if (info->max77693->regmap_muic) { |
b186b124 | 1078 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1079 | } else { |
b186b124 | 1080 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
61b305cd | 1081 | info->max77693->i2c_muic, |
b186b124 CC |
1082 | &max77693_muic_regmap_config); |
1083 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1084 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1085 | dev_err(max77693->dev, | |
1086 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1087 | return ret; |
b186b124 | 1088 | } |
db1b9037 | 1089 | } |
39bf369e CC |
1090 | |
1091 | /* Register input device for button of dock device */ | |
eff7d74f | 1092 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1093 | if (!info->dock) { |
1094 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1095 | return -ENOMEM; | |
1096 | } | |
1097 | info->dock->name = "max77693-muic/dock"; | |
1098 | info->dock->phys = "max77693-muic/extcon"; | |
1099 | info->dock->dev.parent = &pdev->dev; | |
1100 | ||
1101 | __set_bit(EV_REP, info->dock->evbit); | |
1102 | ||
1103 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1104 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1105 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1106 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1107 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1108 | ||
1109 | ret = input_register_device(info->dock); | |
1110 | if (ret < 0) { | |
1111 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1112 | ret); | |
1113 | return ret; | |
1114 | } | |
1115 | ||
db1b9037 CC |
1116 | platform_set_drvdata(pdev, info); |
1117 | mutex_init(&info->mutex); | |
1118 | ||
1119 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); | |
1120 | ||
1121 | /* Support irq domain for MAX77693 MUIC device */ | |
1122 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1123 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
00af4b16 | 1124 | unsigned int virq = 0; |
db1b9037 | 1125 | |
342d669c RB |
1126 | virq = regmap_irq_get_virq(max77693->irq_data_muic, |
1127 | muic_irq->irq); | |
d7155231 KK |
1128 | if (!virq) |
1129 | return -EINVAL; | |
db1b9037 CC |
1130 | muic_irq->virq = virq; |
1131 | ||
d7155231 | 1132 | ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, |
db1b9037 | 1133 | max77693_muic_irq_handler, |
ae3b3215 CC |
1134 | IRQF_NO_SUSPEND, |
1135 | muic_irq->name, info); | |
db1b9037 CC |
1136 | if (ret) { |
1137 | dev_err(&pdev->dev, | |
34825e51 | 1138 | "failed: irq request (IRQ: %d, error :%d)\n", |
db1b9037 | 1139 | muic_irq->irq, ret); |
d7155231 | 1140 | return ret; |
db1b9037 CC |
1141 | } |
1142 | } | |
1143 | ||
1144 | /* Initialize extcon device */ | |
577bef11 CC |
1145 | info->edev = devm_extcon_dev_allocate(&pdev->dev, |
1146 | max77693_extcon_cable); | |
1147 | if (IS_ERR(info->edev)) { | |
db1b9037 | 1148 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
d7155231 | 1149 | return -ENOMEM; |
db1b9037 | 1150 | } |
577bef11 | 1151 | |
10fae118 | 1152 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
db1b9037 CC |
1153 | if (ret) { |
1154 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
d7155231 | 1155 | return ret; |
db1b9037 CC |
1156 | } |
1157 | ||
0ec83bd2 | 1158 | /* Initialize MUIC register by using platform data or default data */ |
d5653f2b | 1159 | if (pdata && pdata->muic_data) { |
0ec83bd2 CC |
1160 | init_data = pdata->muic_data->init_data; |
1161 | num_init_data = pdata->muic_data->num_init_data; | |
1162 | } else { | |
1163 | init_data = default_init_data; | |
1164 | num_init_data = ARRAY_SIZE(default_init_data); | |
1165 | } | |
1166 | ||
a33411b2 | 1167 | for (i = 0; i < num_init_data; i++) { |
d0540f91 | 1168 | regmap_write(info->max77693->regmap_muic, |
0ec83bd2 CC |
1169 | init_data[i].addr, |
1170 | init_data[i].data); | |
0ec83bd2 CC |
1171 | } |
1172 | ||
d5653f2b | 1173 | if (pdata && pdata->muic_data) { |
c2275d2f CC |
1174 | struct max77693_muic_platform_data *muic_pdata |
1175 | = pdata->muic_data; | |
0ec83bd2 | 1176 | |
190d7cfc CC |
1177 | /* |
1178 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1179 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1180 | */ | |
1181 | if (muic_pdata->path_uart) | |
1182 | info->path_uart = muic_pdata->path_uart; | |
1183 | else | |
1184 | info->path_uart = CONTROL1_SW_UART; | |
f8457d57 | 1185 | |
190d7cfc CC |
1186 | if (muic_pdata->path_usb) |
1187 | info->path_usb = muic_pdata->path_usb; | |
1188 | else | |
1189 | info->path_usb = CONTROL1_SW_USB; | |
2b75799f | 1190 | |
190d7cfc CC |
1191 | /* |
1192 | * Default delay time for detecting cable state | |
1193 | * after certain time. | |
1194 | */ | |
1195 | if (muic_pdata->detcable_delay_ms) | |
1196 | delay_jiffies = | |
1197 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1198 | else | |
1199 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1200 | } else { | |
2b75799f | 1201 | info->path_usb = CONTROL1_SW_USB; |
190d7cfc CC |
1202 | info->path_uart = CONTROL1_SW_UART; |
1203 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1204 | } | |
2b75799f CC |
1205 | |
1206 | /* Set initial path for UART */ | |
1207 | max77693_muic_set_path(info, info->path_uart, true); | |
1208 | ||
db1b9037 | 1209 | /* Check revision number of MUIC device*/ |
d0540f91 | 1210 | ret = regmap_read(info->max77693->regmap_muic, |
db1b9037 CC |
1211 | MAX77693_MUIC_REG_ID, &id); |
1212 | if (ret < 0) { | |
1213 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
d7155231 | 1214 | return ret; |
db1b9037 CC |
1215 | } |
1216 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1217 | ||
1218 | /* Set ADC debounce time */ | |
1219 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1220 | ||
297620fd CC |
1221 | /* |
1222 | * Detect accessory after completing the initialization of platform | |
1223 | * | |
1224 | * - Use delayed workqueue to detect cable state and then | |
1225 | * notify cable state to notifiee/platform through uevent. | |
1226 | * After completing the booting of platform, the extcon provider | |
1227 | * driver should notify cable state to upper layer. | |
1228 | */ | |
1229 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
b8629411 KK |
1230 | queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
1231 | delay_jiffies); | |
db1b9037 CC |
1232 | |
1233 | return ret; | |
db1b9037 CC |
1234 | } |
1235 | ||
93ed0327 | 1236 | static int max77693_muic_remove(struct platform_device *pdev) |
db1b9037 CC |
1237 | { |
1238 | struct max77693_muic_info *info = platform_get_drvdata(pdev); | |
db1b9037 | 1239 | |
db1b9037 | 1240 | cancel_work_sync(&info->irq_work); |
39bf369e | 1241 | input_unregister_device(info->dock); |
db1b9037 CC |
1242 | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | static struct platform_driver max77693_muic_driver = { | |
1247 | .driver = { | |
1248 | .name = DEV_NAME, | |
db1b9037 CC |
1249 | }, |
1250 | .probe = max77693_muic_probe, | |
5f7e2228 | 1251 | .remove = max77693_muic_remove, |
db1b9037 CC |
1252 | }; |
1253 | ||
1254 | module_platform_driver(max77693_muic_driver); | |
1255 | ||
1256 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1257 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1258 | MODULE_LICENSE("GPL"); | |
1259 | MODULE_ALIAS("platform:extcon-max77693"); |