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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, | |
cceb433a | 46 | .data = MAX77693_STATUS2_CHGDETRUN_MASK, |
0ec83bd2 CC |
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, | |
11eecf91 CC |
207 | EXTCON_CHG_USB_DCP, |
208 | EXTCON_CHG_USB_FAST, | |
209 | EXTCON_CHG_USB_SLOW, | |
210 | EXTCON_CHG_USB_CDP, | |
211 | EXTCON_DISP_MHL, | |
2a9de9c0 CC |
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, | |
cceb433a | 239 | time << MAX77693_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 | |
cceb433a | 272 | ctrl1 = MAX77693_CONTROL1_SW_OPEN; |
db1b9037 | 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) | |
cceb433a | 282 | ctrl2 |= MAX77693_CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ |
db1b9037 | 283 | else |
cceb433a | 284 | ctrl2 |= MAX77693_CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ |
db1b9037 | 285 | |
d0540f91 RB |
286 | ret = regmap_update_bits(info->max77693->regmap_muic, |
287 | MAX77693_MUIC_REG_CTRL2, | |
cceb433a KK |
288 | MAX77693_CONTROL2_LOWPWR_MASK | MAX77693_CONTROL2_CPEN_MASK, |
289 | ctrl2); | |
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 | dev_info(info->dev, | |
296 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
297 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
298 | |
299 | return 0; | |
db1b9037 CC |
300 | } |
301 | ||
154f757f CC |
302 | /* |
303 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
304 | * @info: the instance including private data of max77693 MUIC | |
305 | * @group: the path according to attached cable | |
306 | * @attached: store cable state and return | |
307 | * | |
308 | * This function check the cable state either attached or detached, | |
309 | * and then divide precise type of cable according to cable group. | |
310 | * - MAX77693_CABLE_GROUP_ADC | |
311 | * - MAX77693_CABLE_GROUP_ADC_GND | |
312 | * - MAX77693_CABLE_GROUP_CHG | |
313 | * - MAX77693_CABLE_GROUP_VBVOLT | |
314 | */ | |
315 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
316 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 317 | { |
154f757f CC |
318 | int cable_type = 0; |
319 | int adc; | |
320 | int adc1k; | |
321 | int adclow; | |
322 | int vbvolt; | |
323 | int chg_type; | |
324 | ||
325 | switch (group) { | |
326 | case MAX77693_CABLE_GROUP_ADC: | |
327 | /* | |
328 | * Read ADC value to check cable type and decide cable state | |
329 | * according to cable type | |
330 | */ | |
cceb433a KK |
331 | adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; |
332 | adc >>= MAX77693_STATUS1_ADC_SHIFT; | |
154f757f CC |
333 | |
334 | /* | |
335 | * Check current cable state/cable type and store cable type | |
336 | * (info->prev_cable_type) for handling cable when cable is | |
337 | * detached. | |
338 | */ | |
339 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
340 | *attached = false; | |
341 | ||
342 | cable_type = info->prev_cable_type; | |
343 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
344 | } else { | |
345 | *attached = true; | |
346 | ||
347 | cable_type = info->prev_cable_type = adc; | |
348 | } | |
349 | break; | |
350 | case MAX77693_CABLE_GROUP_ADC_GND: | |
351 | /* | |
352 | * Read ADC value to check cable type and decide cable state | |
353 | * according to cable type | |
354 | */ | |
cceb433a KK |
355 | adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; |
356 | adc >>= MAX77693_STATUS1_ADC_SHIFT; | |
db1b9037 | 357 | |
154f757f CC |
358 | /* |
359 | * Check current cable state/cable type and store cable type | |
360 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
361 | * is detached. | |
362 | */ | |
363 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
364 | *attached = false; | |
365 | ||
366 | cable_type = info->prev_cable_type_gnd; | |
367 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
368 | } else { | |
369 | *attached = true; | |
370 | ||
cceb433a KK |
371 | adclow = info->status[0] & MAX77693_STATUS1_ADCLOW_MASK; |
372 | adclow >>= MAX77693_STATUS1_ADCLOW_SHIFT; | |
373 | adc1k = info->status[0] & MAX77693_STATUS1_ADC1K_MASK; | |
374 | adc1k >>= MAX77693_STATUS1_ADC1K_SHIFT; | |
154f757f | 375 | |
cceb433a KK |
376 | vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK; |
377 | vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT; | |
154f757f CC |
378 | |
379 | /** | |
c2275d2f | 380 | * [0x1|VBVolt|ADCLow|ADC1K] |
4c883abe JK |
381 | * [0x1| 0| 0| 0] USB_HOST |
382 | * [0x1| 1| 0| 0] USB_HSOT_VB | |
c2275d2f CC |
383 | * [0x1| 0| 1| 0] Audio Video cable with load |
384 | * [0x1| 0| 1| 1] MHL without charging cable | |
385 | * [0x1| 1| 1| 1] MHL with charging cable | |
154f757f CC |
386 | */ |
387 | cable_type = ((0x1 << 8) | |
388 | | (vbvolt << 2) | |
389 | | (adclow << 1) | |
390 | | adc1k); | |
391 | ||
392 | info->prev_cable_type = adc; | |
393 | info->prev_cable_type_gnd = cable_type; | |
394 | } | |
395 | ||
396 | break; | |
397 | case MAX77693_CABLE_GROUP_CHG: | |
398 | /* | |
399 | * Read charger type to check cable type and decide cable state | |
400 | * according to type of charger cable. | |
401 | */ | |
cceb433a KK |
402 | chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK; |
403 | chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT; | |
154f757f CC |
404 | |
405 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
406 | *attached = false; | |
407 | ||
408 | cable_type = info->prev_chg_type; | |
409 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
410 | } else { | |
411 | *attached = true; | |
412 | ||
413 | /* | |
414 | * Check current cable state/cable type and store cable | |
415 | * type(info->prev_chg_type) for handling cable when | |
416 | * charger cable is detached. | |
417 | */ | |
418 | cable_type = info->prev_chg_type = chg_type; | |
419 | } | |
420 | ||
421 | break; | |
422 | case MAX77693_CABLE_GROUP_VBVOLT: | |
423 | /* | |
424 | * Read ADC value to check cable type and decide cable state | |
425 | * according to cable type | |
426 | */ | |
cceb433a KK |
427 | adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; |
428 | adc >>= MAX77693_STATUS1_ADC_SHIFT; | |
429 | chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK; | |
430 | chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT; | |
154f757f CC |
431 | |
432 | if (adc == MAX77693_MUIC_ADC_OPEN | |
433 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
434 | *attached = false; | |
435 | else | |
436 | *attached = true; | |
437 | ||
438 | /* | |
439 | * Read vbvolt field, if vbvolt is 1, | |
440 | * this cable is used for charging. | |
db1b9037 | 441 | */ |
cceb433a KK |
442 | vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK; |
443 | vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT; | |
154f757f CC |
444 | |
445 | cable_type = vbvolt; | |
446 | break; | |
447 | default: | |
448 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
449 | cable_type = -EINVAL; | |
450 | break; | |
451 | } | |
452 | ||
453 | return cable_type; | |
454 | } | |
455 | ||
39bf369e CC |
456 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
457 | int cable_type, bool attached) | |
458 | { | |
459 | int ret = 0; | |
a1626298 CC |
460 | int vbvolt; |
461 | bool cable_attached; | |
73b6ecdb | 462 | unsigned int dock_id; |
39bf369e CC |
463 | |
464 | dev_info(info->dev, | |
465 | "external connector is %s (adc:0x%02x)\n", | |
466 | attached ? "attached" : "detached", cable_type); | |
467 | ||
468 | switch (cable_type) { | |
469 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
470 | /* |
471 | * Check power cable whether attached or detached state. | |
472 | * The Dock-Smart device need surely external power supply. | |
473 | * If power cable(USB/TA) isn't connected to Dock device, | |
474 | * user can't use Dock-Smart for desktop mode. | |
475 | */ | |
476 | vbvolt = max77693_muic_get_cable_type(info, | |
477 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
478 | if (attached && !vbvolt) { | |
479 | dev_warn(info->dev, | |
480 | "Cannot detect external power supply\n"); | |
481 | return 0; | |
482 | } | |
483 | ||
484 | /* | |
d519c423 CC |
485 | * Notify Dock/MHL state. |
486 | * - Dock device include three type of cable which | |
a1626298 | 487 | * are HDMI, USB for mouse/keyboard and micro-usb port |
d519c423 CC |
488 | * for USB/TA cable. Dock device need always exteranl |
489 | * power supply(USB/TA cable through micro-usb cable). Dock | |
490 | * device support screen output of target to separate | |
a1626298 CC |
491 | * monitor and mouse/keyboard for desktop mode. |
492 | * | |
d519c423 | 493 | * Features of 'USB/TA cable with Dock device' |
a1626298 CC |
494 | * - Support MHL |
495 | * - Support external output feature of audio | |
496 | * - Support charging through micro-usb port without data | |
497 | * connection if TA cable is connected to target. | |
498 | * - Support charging and data connection through micro-usb port | |
499 | * if USB cable is connected between target and host | |
500 | * device. | |
4c883abe | 501 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 CC |
502 | */ |
503 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 504 | if (ret < 0) |
a1626298 | 505 | return ret; |
39bf369e | 506 | |
2a9de9c0 | 507 | extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached); |
11eecf91 | 508 | extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached); |
39bf369e | 509 | goto out; |
39bf369e | 510 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
2a9de9c0 | 511 | dock_id = EXTCON_DOCK; |
39bf369e CC |
512 | break; |
513 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
2a9de9c0 | 514 | dock_id = EXTCON_DOCK; |
39bf369e | 515 | if (!attached) |
2a9de9c0 | 516 | extcon_set_cable_state_(info->edev, EXTCON_USB, false); |
39bf369e | 517 | break; |
19d3243e CC |
518 | default: |
519 | dev_err(info->dev, "failed to detect %s dock device\n", | |
520 | attached ? "attached" : "detached"); | |
521 | return -EINVAL; | |
39bf369e CC |
522 | } |
523 | ||
524 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
cceb433a KK |
525 | ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO, |
526 | attached); | |
39bf369e | 527 | if (ret < 0) |
a1626298 | 528 | return ret; |
2a9de9c0 | 529 | extcon_set_cable_state_(info->edev, dock_id, attached); |
39bf369e CC |
530 | |
531 | out: | |
a1626298 | 532 | return 0; |
39bf369e CC |
533 | } |
534 | ||
535 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
536 | int button_type, bool attached) | |
537 | { | |
538 | struct input_dev *dock = info->dock; | |
539 | unsigned int code; | |
39bf369e CC |
540 | |
541 | switch (button_type) { | |
542 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
543 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
544 | /* DOCK_KEY_PREV */ | |
545 | code = KEY_PREVIOUSSONG; | |
546 | break; | |
547 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
548 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
549 | /* DOCK_KEY_NEXT */ | |
550 | code = KEY_NEXTSONG; | |
551 | break; | |
552 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
553 | /* DOCK_VOL_DOWN */ | |
554 | code = KEY_VOLUMEDOWN; | |
555 | break; | |
556 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
557 | /* DOCK_VOL_UP */ | |
558 | code = KEY_VOLUMEUP; | |
559 | break; | |
560 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
561 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
562 | /* DOCK_KEY_PLAY_PAUSE */ | |
563 | code = KEY_PLAYPAUSE; | |
564 | break; | |
565 | default: | |
566 | dev_err(info->dev, | |
567 | "failed to detect %s key (adc:0x%x)\n", | |
568 | attached ? "pressed" : "released", button_type); | |
19d3243e | 569 | return -EINVAL; |
39bf369e CC |
570 | } |
571 | ||
572 | input_event(dock, EV_KEY, code, attached); | |
573 | input_sync(dock); | |
574 | ||
39bf369e CC |
575 | return 0; |
576 | } | |
577 | ||
154f757f CC |
578 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
579 | { | |
580 | int cable_type_gnd; | |
581 | int ret = 0; | |
582 | bool attached; | |
db1b9037 | 583 | |
154f757f CC |
584 | cable_type_gnd = max77693_muic_get_cable_type(info, |
585 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 586 | |
154f757f | 587 | switch (cable_type_gnd) { |
4c883abe JK |
588 | case MAX77693_MUIC_GND_USB_HOST: |
589 | case MAX77693_MUIC_GND_USB_HOST_VB: | |
590 | /* USB_HOST, PATH: AP_USB */ | |
cceb433a KK |
591 | ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_USB, |
592 | attached); | |
db1b9037 | 593 | if (ret < 0) |
19d3243e | 594 | return ret; |
2a9de9c0 | 595 | extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached); |
db1b9037 CC |
596 | break; |
597 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 598 | /* Audio Video Cable with load, PATH:AUDIO */ |
cceb433a KK |
599 | ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO, |
600 | attached); | |
db1b9037 | 601 | if (ret < 0) |
19d3243e | 602 | return ret; |
2a9de9c0 | 603 | extcon_set_cable_state_(info->edev, EXTCON_USB, attached); |
db1b9037 | 604 | break; |
06bed0af CC |
605 | case MAX77693_MUIC_GND_MHL: |
606 | case MAX77693_MUIC_GND_MHL_VB: | |
607 | /* MHL or MHL with USB/TA cable */ | |
11eecf91 | 608 | extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached); |
db1b9037 CC |
609 | break; |
610 | default: | |
19d3243e | 611 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 612 | attached ? "attached" : "detached"); |
19d3243e | 613 | return -EINVAL; |
db1b9037 CC |
614 | } |
615 | ||
19d3243e | 616 | return 0; |
db1b9037 CC |
617 | } |
618 | ||
d0587eb7 CC |
619 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
620 | int cable_type, bool attached) | |
621 | { | |
d0587eb7 | 622 | int ret = 0; |
cceb433a | 623 | u8 path = MAX77693_CONTROL1_SW_OPEN; |
d0587eb7 CC |
624 | |
625 | dev_info(info->dev, | |
626 | "external connector is %s (adc:0x%02x)\n", | |
627 | attached ? "attached" : "detached", cable_type); | |
628 | ||
629 | switch (cable_type) { | |
630 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
d0587eb7 CC |
631 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ |
632 | /* PATH:AP_USB */ | |
cceb433a | 633 | path = MAX77693_CONTROL1_SW_USB; |
d0587eb7 CC |
634 | break; |
635 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
c22159a2 KK |
636 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */ |
637 | /* PATH:AP_UART */ | |
cceb433a | 638 | path = MAX77693_CONTROL1_SW_UART; |
c22159a2 | 639 | break; |
19d3243e CC |
640 | default: |
641 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
642 | attached ? "attached" : "detached"); | |
643 | return -EINVAL; | |
d0587eb7 CC |
644 | } |
645 | ||
646 | ret = max77693_muic_set_path(info, path, attached); | |
647 | if (ret < 0) | |
19d3243e | 648 | return ret; |
d0587eb7 | 649 | |
2a9de9c0 | 650 | extcon_set_cable_state_(info->edev, EXTCON_JIG, attached); |
19d3243e CC |
651 | |
652 | return 0; | |
d0587eb7 CC |
653 | } |
654 | ||
154f757f | 655 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 656 | { |
154f757f | 657 | int cable_type; |
39bf369e | 658 | int button_type; |
154f757f | 659 | bool attached; |
db1b9037 | 660 | int ret = 0; |
db1b9037 | 661 | |
154f757f CC |
662 | /* Check accessory state which is either detached or attached */ |
663 | cable_type = max77693_muic_get_cable_type(info, | |
664 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
665 | |
666 | dev_info(info->dev, | |
667 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
668 | attached ? "attached" : "detached", cable_type, |
669 | info->prev_cable_type); | |
db1b9037 | 670 | |
154f757f | 671 | switch (cable_type) { |
db1b9037 | 672 | case MAX77693_MUIC_ADC_GROUND: |
4c883abe | 673 | /* USB_HOST/MHL/Audio */ |
154f757f | 674 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
675 | break; |
676 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
677 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 678 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
c22159a2 | 679 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: |
db1b9037 | 680 | /* JIG */ |
d0587eb7 | 681 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 682 | if (ret < 0) |
19d3243e | 683 | return ret; |
db1b9037 | 684 | break; |
39bf369e | 685 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
39bf369e CC |
686 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
687 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
688 | /* | |
689 | * DOCK device | |
690 | * | |
691 | * The MAX77693 MUIC device can detect total 34 cable type | |
692 | * except of charger cable and MUIC device didn't define | |
693 | * specfic role of cable in the range of from 0x01 to 0x12 | |
694 | * of ADC value. So, can use/define cable with no role according | |
695 | * to schema of hardware board. | |
696 | */ | |
697 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
698 | if (ret < 0) | |
19d3243e | 699 | return ret; |
39bf369e | 700 | break; |
c2275d2f CC |
701 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
702 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
703 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
704 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
705 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
39bf369e CC |
706 | /* |
707 | * Button of DOCK device | |
708 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
709 | * | |
710 | * The MAX77693 MUIC device can detect total 34 cable type | |
711 | * except of charger cable and MUIC device didn't define | |
712 | * specfic role of cable in the range of from 0x01 to 0x12 | |
713 | * of ADC value. So, can use/define cable with no role according | |
714 | * to schema of hardware board. | |
715 | */ | |
716 | if (attached) | |
717 | button_type = info->prev_button_type = cable_type; | |
718 | else | |
719 | button_type = info->prev_button_type; | |
720 | ||
721 | ret = max77693_muic_dock_button_handler(info, button_type, | |
722 | attached); | |
db1b9037 | 723 | if (ret < 0) |
19d3243e | 724 | return ret; |
db1b9037 CC |
725 | break; |
726 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
727 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
728 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
729 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
730 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
731 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 732 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 733 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
734 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
735 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
736 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
737 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
738 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
739 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
740 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
741 | case MAX77693_MUIC_ADC_UART_CABLE: | |
742 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 743 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
744 | /* |
745 | * This accessory isn't used in general case if it is specially | |
746 | * needed to detect additional accessory, should implement | |
747 | * proper operation when this accessory is attached/detached. | |
748 | */ | |
db1b9037 CC |
749 | dev_info(info->dev, |
750 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 751 | attached ? "attached" : "detached", cable_type); |
19d3243e | 752 | return -EAGAIN; |
db1b9037 CC |
753 | default: |
754 | dev_err(info->dev, | |
755 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 756 | attached ? "attached" : "detached", cable_type); |
19d3243e | 757 | return -EINVAL; |
db1b9037 CC |
758 | } |
759 | ||
19d3243e | 760 | return 0; |
db1b9037 CC |
761 | } |
762 | ||
154f757f | 763 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 764 | { |
db1b9037 | 765 | int chg_type; |
06bed0af | 766 | int cable_type_gnd; |
39bf369e | 767 | int cable_type; |
154f757f | 768 | bool attached; |
06bed0af | 769 | bool cable_attached; |
154f757f | 770 | int ret = 0; |
db1b9037 | 771 | |
154f757f CC |
772 | chg_type = max77693_muic_get_cable_type(info, |
773 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
774 | |
775 | dev_info(info->dev, | |
776 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
777 | attached ? "attached" : "detached", | |
154f757f | 778 | chg_type, info->prev_chg_type); |
db1b9037 CC |
779 | |
780 | switch (chg_type) { | |
781 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 782 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 783 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 784 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
785 | cable_type_gnd = max77693_muic_get_cable_type(info, |
786 | MAX77693_CABLE_GROUP_ADC_GND, | |
787 | &cable_attached); | |
a1626298 CC |
788 | switch (cable_type_gnd) { |
789 | case MAX77693_MUIC_GND_MHL: | |
790 | case MAX77693_MUIC_GND_MHL_VB: | |
791 | /* | |
942e0239 | 792 | * MHL cable with USB/TA cable |
c2275d2f CC |
793 | * - MHL cable include two port(HDMI line and separate |
794 | * micro-usb port. When the target connect MHL cable, | |
942e0239 CC |
795 | * extcon driver check whether USB/TA cable is |
796 | * connected. If USB/TA cable is connected, extcon | |
c2275d2f | 797 | * driver notify state to notifiee for charging battery. |
a1626298 | 798 | * |
942e0239 | 799 | * Features of 'USB/TA with MHL cable' |
a1626298 | 800 | * - Support MHL |
c2275d2f CC |
801 | * - Support charging through micro-usb port without |
802 | * data connection | |
a1626298 | 803 | */ |
11eecf91 CC |
804 | extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP, |
805 | attached); | |
06bed0af | 806 | if (!cable_attached) |
11eecf91 CC |
807 | extcon_set_cable_state_(info->edev, |
808 | EXTCON_DISP_MHL, cable_attached); | |
a1626298 | 809 | break; |
39bf369e CC |
810 | } |
811 | ||
a1626298 | 812 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
813 | cable_type = max77693_muic_get_cable_type(info, |
814 | MAX77693_CABLE_GROUP_ADC, | |
815 | &cable_attached); | |
a1626298 CC |
816 | switch (cable_type) { |
817 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
818 | /* | |
819 | * Dock-Audio device with USB/TA cable | |
c2275d2f CC |
820 | * - Dock device include two port(Dock-Audio and micro- |
821 | * usb port). When the target connect Dock-Audio device, | |
822 | * extcon driver check whether USB/TA cable is connected | |
823 | * or not. If USB/TA cable is connected, extcon driver | |
824 | * notify state to notifiee for charging battery. | |
a1626298 CC |
825 | * |
826 | * Features of 'USB/TA cable with Dock-Audio device' | |
827 | * - Support external output feature of audio. | |
c2275d2f CC |
828 | * - Support charging through micro-usb port without |
829 | * data connection. | |
a1626298 | 830 | */ |
2a9de9c0 CC |
831 | extcon_set_cable_state_(info->edev, EXTCON_USB, |
832 | attached); | |
39bf369e CC |
833 | |
834 | if (!cable_attached) | |
2a9de9c0 CC |
835 | extcon_set_cable_state_(info->edev, EXTCON_DOCK, |
836 | cable_attached); | |
a1626298 CC |
837 | break; |
838 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
839 | /* | |
840 | * Dock-Smart device with USB/TA cable | |
841 | * - Dock-Desk device include three type of cable which | |
842 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
c2275d2f CC |
843 | * for USB/TA cable. Dock-Smart device need always |
844 | * exteranl power supply(USB/TA cable through micro-usb | |
845 | * cable). Dock-Smart device support screen output of | |
846 | * target to separate monitor and mouse/keyboard for | |
847 | * desktop mode. | |
a1626298 CC |
848 | * |
849 | * Features of 'USB/TA cable with Dock-Smart device' | |
850 | * - Support MHL | |
851 | * - Support external output feature of audio | |
c2275d2f CC |
852 | * - Support charging through micro-usb port without |
853 | * data connection if TA cable is connected to target. | |
854 | * - Support charging and data connection through micro- | |
855 | * usb port if USB cable is connected between target | |
856 | * and host device | |
4c883abe | 857 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 | 858 | */ |
c2275d2f CC |
859 | ret = max77693_muic_set_path(info, info->path_usb, |
860 | attached); | |
a1626298 CC |
861 | if (ret < 0) |
862 | return ret; | |
863 | ||
2a9de9c0 CC |
864 | extcon_set_cable_state_(info->edev, EXTCON_DOCK, |
865 | attached); | |
11eecf91 | 866 | extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, |
2a9de9c0 | 867 | attached); |
a1626298 | 868 | break; |
06bed0af | 869 | } |
39bf369e | 870 | |
a1626298 CC |
871 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
872 | switch (chg_type) { | |
873 | case MAX77693_CHARGER_TYPE_NONE: | |
874 | /* | |
c2275d2f CC |
875 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
876 | * cable is attached, muic device happen below two irq. | |
877 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting | |
878 | * MHL/Dock-Audio. | |
879 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting | |
880 | * USB/TA cable connected to MHL or Dock-Audio. | |
881 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC | |
882 | * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. | |
a1626298 | 883 | * |
c2275d2f CC |
884 | * If user attach MHL (with USB/TA cable and immediately |
885 | * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ | |
886 | * _INT2_CHGTYP irq is happened, USB/TA cable remain | |
887 | * connected state to target. But USB/TA cable isn't | |
888 | * connected to target. The user be face with unusual | |
889 | * action. So, driver should check this situation in | |
890 | * spite of, that previous charger type is N/A. | |
a1626298 | 891 | */ |
0e2738f5 | 892 | break; |
a1626298 CC |
893 | case MAX77693_CHARGER_TYPE_USB: |
894 | /* Only USB cable, PATH:AP_USB */ | |
c2275d2f CC |
895 | ret = max77693_muic_set_path(info, info->path_usb, |
896 | attached); | |
a1626298 CC |
897 | if (ret < 0) |
898 | return ret; | |
0e2738f5 | 899 | |
2a9de9c0 CC |
900 | extcon_set_cable_state_(info->edev, EXTCON_USB, |
901 | attached); | |
a1626298 CC |
902 | break; |
903 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
904 | /* Only TA cable */ | |
11eecf91 CC |
905 | extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP, |
906 | attached); | |
a1626298 CC |
907 | break; |
908 | } | |
db1b9037 CC |
909 | break; |
910 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
11eecf91 | 911 | extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP, |
2a9de9c0 | 912 | attached); |
db1b9037 | 913 | break; |
db1b9037 | 914 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
11eecf91 | 915 | extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW, |
2a9de9c0 | 916 | attached); |
db1b9037 CC |
917 | break; |
918 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
11eecf91 | 919 | extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST, |
2a9de9c0 | 920 | attached); |
db1b9037 CC |
921 | break; |
922 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
923 | break; | |
924 | default: | |
925 | dev_err(info->dev, | |
926 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
927 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 928 | return -EINVAL; |
db1b9037 CC |
929 | } |
930 | ||
a1626298 | 931 | return 0; |
db1b9037 CC |
932 | } |
933 | ||
934 | static void max77693_muic_irq_work(struct work_struct *work) | |
935 | { | |
936 | struct max77693_muic_info *info = container_of(work, | |
937 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
938 | int irq_type = -1; |
939 | int i, ret = 0; | |
db1b9037 CC |
940 | |
941 | if (!info->edev) | |
942 | return; | |
943 | ||
944 | mutex_lock(&info->mutex); | |
945 | ||
a33411b2 | 946 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
db1b9037 CC |
947 | if (info->irq == muic_irqs[i].virq) |
948 | irq_type = muic_irqs[i].irq; | |
949 | ||
d0540f91 RB |
950 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
951 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
952 | if (ret) { |
953 | dev_err(info->dev, "failed to read MUIC register\n"); | |
954 | mutex_unlock(&info->mutex); | |
955 | return; | |
956 | } | |
957 | ||
958 | switch (irq_type) { | |
959 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
960 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
961 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
962 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
963 | /* Handle all of accessory except for | |
964 | type of charger accessory */ | |
154f757f | 965 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
966 | break; |
967 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
968 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
969 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
970 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
971 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
972 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
973 | /* Handle charger accessory */ | |
154f757f | 974 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
975 | break; |
976 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
977 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
978 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
979 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
980 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
981 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
982 | break; | |
983 | default: | |
984 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
985 | irq_type); | |
19d3243e CC |
986 | mutex_unlock(&info->mutex); |
987 | return; | |
db1b9037 CC |
988 | } |
989 | ||
990 | if (ret < 0) | |
991 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
992 | ||
993 | mutex_unlock(&info->mutex); | |
db1b9037 CC |
994 | } |
995 | ||
996 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
997 | { | |
998 | struct max77693_muic_info *info = data; | |
999 | ||
1000 | info->irq = irq; | |
1001 | schedule_work(&info->irq_work); | |
1002 | ||
1003 | return IRQ_HANDLED; | |
1004 | } | |
1005 | ||
65948900 | 1006 | static const struct regmap_config max77693_muic_regmap_config = { |
db1b9037 CC |
1007 | .reg_bits = 8, |
1008 | .val_bits = 8, | |
1009 | }; | |
1010 | ||
1011 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
1012 | { | |
1013 | int ret = 0; | |
154f757f CC |
1014 | int adc; |
1015 | int chg_type; | |
1016 | bool attached; | |
db1b9037 CC |
1017 | |
1018 | mutex_lock(&info->mutex); | |
1019 | ||
1020 | /* Read STATUSx register to detect accessory */ | |
d0540f91 RB |
1021 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
1022 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
1023 | if (ret) { |
1024 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1025 | mutex_unlock(&info->mutex); | |
c2536543 | 1026 | return ret; |
db1b9037 CC |
1027 | } |
1028 | ||
154f757f CC |
1029 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1030 | &attached); | |
1031 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1032 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1033 | if (ret < 0) { |
154f757f | 1034 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1035 | mutex_unlock(&info->mutex); |
1036 | return ret; | |
1037 | } | |
db1b9037 CC |
1038 | } |
1039 | ||
154f757f CC |
1040 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1041 | &attached); | |
1042 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1043 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1044 | if (ret < 0) { |
154f757f | 1045 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1046 | mutex_unlock(&info->mutex); |
1047 | return ret; | |
1048 | } | |
db1b9037 CC |
1049 | } |
1050 | ||
db1b9037 | 1051 | mutex_unlock(&info->mutex); |
154f757f | 1052 | |
19d3243e | 1053 | return 0; |
db1b9037 CC |
1054 | } |
1055 | ||
297620fd CC |
1056 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1057 | { | |
1058 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1059 | struct max77693_muic_info, wq_detcable); | |
1060 | ||
1061 | max77693_muic_detect_accessory(info); | |
1062 | } | |
1063 | ||
44f34fd4 | 1064 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1065 | { |
1066 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 | 1067 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
db1b9037 | 1068 | struct max77693_muic_info *info; |
0ec83bd2 CC |
1069 | struct max77693_reg_data *init_data; |
1070 | int num_init_data; | |
297620fd CC |
1071 | int delay_jiffies; |
1072 | int ret; | |
1073 | int i; | |
d0540f91 | 1074 | unsigned int id; |
db1b9037 | 1075 | |
f4bb5cb5 SK |
1076 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1077 | GFP_KERNEL); | |
0a16ee63 | 1078 | if (!info) |
f4bb5cb5 | 1079 | return -ENOMEM; |
0a16ee63 | 1080 | |
db1b9037 CC |
1081 | info->dev = &pdev->dev; |
1082 | info->max77693 = max77693; | |
1967fa08 | 1083 | if (info->max77693->regmap_muic) { |
b186b124 | 1084 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1085 | } else { |
b186b124 | 1086 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
61b305cd | 1087 | info->max77693->i2c_muic, |
b186b124 CC |
1088 | &max77693_muic_regmap_config); |
1089 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1090 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1091 | dev_err(max77693->dev, | |
1092 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1093 | return ret; |
b186b124 | 1094 | } |
db1b9037 | 1095 | } |
39bf369e CC |
1096 | |
1097 | /* Register input device for button of dock device */ | |
eff7d74f | 1098 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1099 | if (!info->dock) { |
1100 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1101 | return -ENOMEM; | |
1102 | } | |
1103 | info->dock->name = "max77693-muic/dock"; | |
1104 | info->dock->phys = "max77693-muic/extcon"; | |
1105 | info->dock->dev.parent = &pdev->dev; | |
1106 | ||
1107 | __set_bit(EV_REP, info->dock->evbit); | |
1108 | ||
1109 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1110 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1111 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1112 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1113 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1114 | ||
1115 | ret = input_register_device(info->dock); | |
1116 | if (ret < 0) { | |
1117 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1118 | ret); | |
1119 | return ret; | |
1120 | } | |
1121 | ||
db1b9037 CC |
1122 | platform_set_drvdata(pdev, info); |
1123 | mutex_init(&info->mutex); | |
1124 | ||
1125 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); | |
1126 | ||
1127 | /* Support irq domain for MAX77693 MUIC device */ | |
1128 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1129 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
cbc46603 | 1130 | int virq; |
db1b9037 | 1131 | |
342d669c RB |
1132 | virq = regmap_irq_get_virq(max77693->irq_data_muic, |
1133 | muic_irq->irq); | |
cbc46603 | 1134 | if (virq <= 0) |
d7155231 | 1135 | return -EINVAL; |
db1b9037 CC |
1136 | muic_irq->virq = virq; |
1137 | ||
d7155231 | 1138 | ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, |
db1b9037 | 1139 | max77693_muic_irq_handler, |
ae3b3215 CC |
1140 | IRQF_NO_SUSPEND, |
1141 | muic_irq->name, info); | |
db1b9037 CC |
1142 | if (ret) { |
1143 | dev_err(&pdev->dev, | |
34825e51 | 1144 | "failed: irq request (IRQ: %d, error :%d)\n", |
db1b9037 | 1145 | muic_irq->irq, ret); |
d7155231 | 1146 | return ret; |
db1b9037 CC |
1147 | } |
1148 | } | |
1149 | ||
1150 | /* Initialize extcon device */ | |
577bef11 CC |
1151 | info->edev = devm_extcon_dev_allocate(&pdev->dev, |
1152 | max77693_extcon_cable); | |
1153 | if (IS_ERR(info->edev)) { | |
db1b9037 | 1154 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
d7155231 | 1155 | return -ENOMEM; |
db1b9037 | 1156 | } |
577bef11 | 1157 | |
10fae118 | 1158 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
db1b9037 CC |
1159 | if (ret) { |
1160 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
d7155231 | 1161 | return ret; |
db1b9037 CC |
1162 | } |
1163 | ||
0ec83bd2 | 1164 | /* Initialize MUIC register by using platform data or default data */ |
d5653f2b | 1165 | if (pdata && pdata->muic_data) { |
0ec83bd2 CC |
1166 | init_data = pdata->muic_data->init_data; |
1167 | num_init_data = pdata->muic_data->num_init_data; | |
1168 | } else { | |
1169 | init_data = default_init_data; | |
1170 | num_init_data = ARRAY_SIZE(default_init_data); | |
1171 | } | |
1172 | ||
a33411b2 | 1173 | for (i = 0; i < num_init_data; i++) { |
d0540f91 | 1174 | regmap_write(info->max77693->regmap_muic, |
0ec83bd2 CC |
1175 | init_data[i].addr, |
1176 | init_data[i].data); | |
0ec83bd2 CC |
1177 | } |
1178 | ||
d5653f2b | 1179 | if (pdata && pdata->muic_data) { |
c2275d2f CC |
1180 | struct max77693_muic_platform_data *muic_pdata |
1181 | = pdata->muic_data; | |
0ec83bd2 | 1182 | |
190d7cfc CC |
1183 | /* |
1184 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1185 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1186 | */ | |
1187 | if (muic_pdata->path_uart) | |
1188 | info->path_uart = muic_pdata->path_uart; | |
1189 | else | |
cceb433a | 1190 | info->path_uart = MAX77693_CONTROL1_SW_UART; |
f8457d57 | 1191 | |
190d7cfc CC |
1192 | if (muic_pdata->path_usb) |
1193 | info->path_usb = muic_pdata->path_usb; | |
1194 | else | |
cceb433a | 1195 | info->path_usb = MAX77693_CONTROL1_SW_USB; |
2b75799f | 1196 | |
190d7cfc CC |
1197 | /* |
1198 | * Default delay time for detecting cable state | |
1199 | * after certain time. | |
1200 | */ | |
1201 | if (muic_pdata->detcable_delay_ms) | |
1202 | delay_jiffies = | |
1203 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1204 | else | |
1205 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1206 | } else { | |
cceb433a KK |
1207 | info->path_usb = MAX77693_CONTROL1_SW_USB; |
1208 | info->path_uart = MAX77693_CONTROL1_SW_UART; | |
190d7cfc CC |
1209 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); |
1210 | } | |
2b75799f CC |
1211 | |
1212 | /* Set initial path for UART */ | |
1213 | max77693_muic_set_path(info, info->path_uart, true); | |
1214 | ||
db1b9037 | 1215 | /* Check revision number of MUIC device*/ |
d0540f91 | 1216 | ret = regmap_read(info->max77693->regmap_muic, |
db1b9037 CC |
1217 | MAX77693_MUIC_REG_ID, &id); |
1218 | if (ret < 0) { | |
1219 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
d7155231 | 1220 | return ret; |
db1b9037 CC |
1221 | } |
1222 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1223 | ||
1224 | /* Set ADC debounce time */ | |
1225 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1226 | ||
297620fd CC |
1227 | /* |
1228 | * Detect accessory after completing the initialization of platform | |
1229 | * | |
1230 | * - Use delayed workqueue to detect cable state and then | |
1231 | * notify cable state to notifiee/platform through uevent. | |
1232 | * After completing the booting of platform, the extcon provider | |
1233 | * driver should notify cable state to upper layer. | |
1234 | */ | |
1235 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
b8629411 KK |
1236 | queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
1237 | delay_jiffies); | |
db1b9037 CC |
1238 | |
1239 | return ret; | |
db1b9037 CC |
1240 | } |
1241 | ||
93ed0327 | 1242 | static int max77693_muic_remove(struct platform_device *pdev) |
db1b9037 CC |
1243 | { |
1244 | struct max77693_muic_info *info = platform_get_drvdata(pdev); | |
db1b9037 | 1245 | |
db1b9037 | 1246 | cancel_work_sync(&info->irq_work); |
39bf369e | 1247 | input_unregister_device(info->dock); |
db1b9037 CC |
1248 | |
1249 | return 0; | |
1250 | } | |
1251 | ||
1252 | static struct platform_driver max77693_muic_driver = { | |
1253 | .driver = { | |
1254 | .name = DEV_NAME, | |
db1b9037 CC |
1255 | }, |
1256 | .probe = max77693_muic_probe, | |
5f7e2228 | 1257 | .remove = max77693_muic_remove, |
db1b9037 CC |
1258 | }; |
1259 | ||
1260 | module_platform_driver(max77693_muic_driver); | |
1261 | ||
1262 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1263 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1264 | MODULE_LICENSE("GPL"); | |
1265 | MODULE_ALIAS("platform:extcon-max77693"); |