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db1b9037 CC |
1 | /* |
2 | * extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC | |
3 | * | |
4 | * Copyright (C) 2012 Samsung Electrnoics | |
5 | * Chanwoo Choi <cw00.choi@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/slab.h> | |
39bf369e | 22 | #include <linux/input.h> |
db1b9037 CC |
23 | #include <linux/interrupt.h> |
24 | #include <linux/err.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/mfd/max77693.h> | |
27 | #include <linux/mfd/max77693-private.h> | |
28 | #include <linux/extcon.h> | |
29 | #include <linux/regmap.h> | |
30 | #include <linux/irqdomain.h> | |
31 | ||
32 | #define DEV_NAME "max77693-muic" | |
297620fd | 33 | #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ |
db1b9037 | 34 | |
0ec83bd2 CC |
35 | /* |
36 | * Default value of MAX77693 register to bring up MUIC device. | |
37 | * If user don't set some initial value for MUIC device through platform data, | |
38 | * extcon-max77693 driver use 'default_init_data' to bring up base operation | |
39 | * of MAX77693 MUIC device. | |
40 | */ | |
813b4516 | 41 | static struct max77693_reg_data default_init_data[] = { |
0ec83bd2 CC |
42 | { |
43 | /* STATUS2 - [3]ChgDetRun */ | |
44 | .addr = MAX77693_MUIC_REG_STATUS2, | |
45 | .data = STATUS2_CHGDETRUN_MASK, | |
46 | }, { | |
47 | /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ | |
48 | .addr = MAX77693_MUIC_REG_INTMASK1, | |
49 | .data = INTMASK1_ADC1K_MASK | |
50 | | INTMASK1_ADC_MASK, | |
51 | }, { | |
52 | /* INTMASK2 - Unmask [0]ChgTypM */ | |
53 | .addr = MAX77693_MUIC_REG_INTMASK2, | |
54 | .data = INTMASK2_CHGTYP_MASK, | |
55 | }, { | |
56 | /* INTMASK3 - Mask all of interrupts */ | |
57 | .addr = MAX77693_MUIC_REG_INTMASK3, | |
58 | .data = 0x0, | |
59 | }, { | |
60 | /* CDETCTRL2 */ | |
61 | .addr = MAX77693_MUIC_REG_CDETCTRL2, | |
62 | .data = CDETCTRL2_VIDRMEN_MASK | |
63 | | CDETCTRL2_DXOVPEN_MASK, | |
64 | }, | |
65 | }; | |
66 | ||
db1b9037 CC |
67 | enum max77693_muic_adc_debounce_time { |
68 | ADC_DEBOUNCE_TIME_5MS = 0, | |
69 | ADC_DEBOUNCE_TIME_10MS, | |
70 | ADC_DEBOUNCE_TIME_25MS, | |
71 | ADC_DEBOUNCE_TIME_38_62MS, | |
72 | }; | |
73 | ||
74 | struct max77693_muic_info { | |
75 | struct device *dev; | |
76 | struct max77693_dev *max77693; | |
77 | struct extcon_dev *edev; | |
154f757f CC |
78 | int prev_cable_type; |
79 | int prev_cable_type_gnd; | |
db1b9037 | 80 | int prev_chg_type; |
39bf369e | 81 | int prev_button_type; |
db1b9037 CC |
82 | u8 status[2]; |
83 | ||
84 | int irq; | |
85 | struct work_struct irq_work; | |
86 | struct mutex mutex; | |
39bf369e | 87 | |
297620fd CC |
88 | /* |
89 | * Use delayed workqueue to detect cable state and then | |
90 | * notify cable state to notifiee/platform through uevent. | |
91 | * After completing the booting of platform, the extcon provider | |
92 | * driver should notify cable state to upper layer. | |
93 | */ | |
94 | struct delayed_work wq_detcable; | |
95 | ||
39bf369e CC |
96 | /* Button of dock device */ |
97 | struct input_dev *dock; | |
2b75799f CC |
98 | |
99 | /* | |
100 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
101 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
102 | */ | |
103 | int path_usb; | |
104 | int path_uart; | |
db1b9037 CC |
105 | }; |
106 | ||
154f757f CC |
107 | enum max77693_muic_cable_group { |
108 | MAX77693_CABLE_GROUP_ADC = 0, | |
109 | MAX77693_CABLE_GROUP_ADC_GND, | |
110 | MAX77693_CABLE_GROUP_CHG, | |
111 | MAX77693_CABLE_GROUP_VBVOLT, | |
112 | }; | |
113 | ||
db1b9037 CC |
114 | enum max77693_muic_charger_type { |
115 | MAX77693_CHARGER_TYPE_NONE = 0, | |
116 | MAX77693_CHARGER_TYPE_USB, | |
117 | MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, | |
118 | MAX77693_CHARGER_TYPE_DEDICATED_CHG, | |
119 | MAX77693_CHARGER_TYPE_APPLE_500MA, | |
120 | MAX77693_CHARGER_TYPE_APPLE_1A_2A, | |
121 | MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, | |
122 | }; | |
123 | ||
124 | /** | |
125 | * struct max77693_muic_irq | |
126 | * @irq: the index of irq list of MUIC device. | |
127 | * @name: the name of irq. | |
128 | * @virq: the virtual irq to use irq domain | |
129 | */ | |
130 | struct max77693_muic_irq { | |
131 | unsigned int irq; | |
132 | const char *name; | |
133 | unsigned int virq; | |
134 | }; | |
135 | ||
136 | static struct max77693_muic_irq muic_irqs[] = { | |
137 | { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, | |
138 | { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, | |
139 | { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, | |
140 | { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, | |
141 | { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, | |
142 | { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, | |
143 | { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, | |
144 | { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, | |
145 | { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, | |
146 | { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, | |
147 | { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, | |
148 | { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, | |
149 | { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, | |
150 | { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, | |
151 | { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, | |
152 | { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, | |
153 | }; | |
154 | ||
155 | /* Define supported accessory type */ | |
156 | enum max77693_muic_acc_type { | |
157 | MAX77693_MUIC_ADC_GROUND = 0x0, | |
158 | MAX77693_MUIC_ADC_SEND_END_BUTTON, | |
159 | MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, | |
160 | MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, | |
161 | MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, | |
162 | MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, | |
163 | MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, | |
164 | MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, | |
165 | MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, | |
166 | MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, | |
167 | MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, | |
168 | MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, | |
169 | MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, | |
170 | MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, | |
171 | MAX77693_MUIC_ADC_RESERVED_ACC_1, | |
172 | MAX77693_MUIC_ADC_RESERVED_ACC_2, | |
173 | MAX77693_MUIC_ADC_RESERVED_ACC_3, | |
174 | MAX77693_MUIC_ADC_RESERVED_ACC_4, | |
175 | MAX77693_MUIC_ADC_RESERVED_ACC_5, | |
176 | MAX77693_MUIC_ADC_CEA936_AUDIO, | |
177 | MAX77693_MUIC_ADC_PHONE_POWERED_DEV, | |
178 | MAX77693_MUIC_ADC_TTY_CONVERTER, | |
179 | MAX77693_MUIC_ADC_UART_CABLE, | |
180 | MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, | |
181 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, | |
182 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, | |
183 | MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, | |
184 | MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, | |
185 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, | |
186 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, | |
187 | MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, | |
188 | MAX77693_MUIC_ADC_OPEN, | |
189 | ||
190 | /* The below accessories have same ADC value so ADCLow and | |
191 | ADC1K bit is used to separate specific accessory */ | |
c2275d2f CC |
192 | /* ADC|VBVolot|ADCLow|ADC1K| */ |
193 | MAX77693_MUIC_GND_USB_OTG = 0x100, /* 0x0| 0| 0| 0| */ | |
194 | MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* 0x0| 1| 0| 0| */ | |
195 | MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ | |
196 | MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ | |
197 | MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ | |
db1b9037 CC |
198 | }; |
199 | ||
c2275d2f CC |
200 | /* |
201 | * MAX77693 MUIC device support below list of accessories(external connector) | |
202 | */ | |
154f757f CC |
203 | enum { |
204 | EXTCON_CABLE_USB = 0, | |
205 | EXTCON_CABLE_USB_HOST, | |
206 | EXTCON_CABLE_TA, | |
207 | EXTCON_CABLE_FAST_CHARGER, | |
208 | EXTCON_CABLE_SLOW_CHARGER, | |
209 | EXTCON_CABLE_CHARGE_DOWNSTREAM, | |
210 | EXTCON_CABLE_MHL, | |
06bed0af | 211 | EXTCON_CABLE_MHL_TA, |
d0587eb7 CC |
212 | EXTCON_CABLE_JIG_USB_ON, |
213 | EXTCON_CABLE_JIG_USB_OFF, | |
214 | EXTCON_CABLE_JIG_UART_OFF, | |
39bf369e CC |
215 | EXTCON_CABLE_JIG_UART_ON, |
216 | EXTCON_CABLE_DOCK_SMART, | |
217 | EXTCON_CABLE_DOCK_DESK, | |
218 | EXTCON_CABLE_DOCK_AUDIO, | |
154f757f CC |
219 | |
220 | _EXTCON_CABLE_NUM, | |
221 | }; | |
db1b9037 | 222 | |
45d4a4e6 | 223 | static const char *max77693_extcon_cable[] = { |
154f757f CC |
224 | [EXTCON_CABLE_USB] = "USB", |
225 | [EXTCON_CABLE_USB_HOST] = "USB-Host", | |
226 | [EXTCON_CABLE_TA] = "TA", | |
227 | [EXTCON_CABLE_FAST_CHARGER] = "Fast-charger", | |
228 | [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger", | |
229 | [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream", | |
230 | [EXTCON_CABLE_MHL] = "MHL", | |
06bed0af | 231 | [EXTCON_CABLE_MHL_TA] = "MHL_TA", |
d0587eb7 CC |
232 | [EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON", |
233 | [EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF", | |
234 | [EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF", | |
39bf369e CC |
235 | [EXTCON_CABLE_JIG_UART_ON] = "Dock-Car", |
236 | [EXTCON_CABLE_DOCK_SMART] = "Dock-Smart", | |
237 | [EXTCON_CABLE_DOCK_DESK] = "Dock-Desk", | |
238 | [EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio", | |
d0587eb7 | 239 | |
db1b9037 CC |
240 | NULL, |
241 | }; | |
242 | ||
154f757f CC |
243 | /* |
244 | * max77693_muic_set_debounce_time - Set the debounce time of ADC | |
245 | * @info: the instance including private data of max77693 MUIC | |
246 | * @time: the debounce time of ADC | |
247 | */ | |
db1b9037 CC |
248 | static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
249 | enum max77693_muic_adc_debounce_time time) | |
250 | { | |
bf2627d6 | 251 | int ret; |
db1b9037 CC |
252 | |
253 | switch (time) { | |
254 | case ADC_DEBOUNCE_TIME_5MS: | |
255 | case ADC_DEBOUNCE_TIME_10MS: | |
256 | case ADC_DEBOUNCE_TIME_25MS: | |
257 | case ADC_DEBOUNCE_TIME_38_62MS: | |
dc6048d7 JL |
258 | /* |
259 | * Don't touch BTLDset, JIGset when you want to change adc | |
260 | * debounce time. If it writes other than 0 to BTLDset, JIGset | |
261 | * muic device will be reset and loose current state. | |
262 | */ | |
263 | ret = regmap_write(info->max77693->regmap_muic, | |
264 | MAX77693_MUIC_REG_CTRL3, | |
265 | time << CONTROL3_ADCDBSET_SHIFT); | |
19d3243e | 266 | if (ret) { |
db1b9037 | 267 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
c2536543 | 268 | return ret; |
19d3243e | 269 | } |
db1b9037 CC |
270 | break; |
271 | default: | |
272 | dev_err(info->dev, "invalid ADC debounce time\n"); | |
19d3243e | 273 | return -EINVAL; |
db1b9037 CC |
274 | } |
275 | ||
19d3243e | 276 | return 0; |
db1b9037 CC |
277 | }; |
278 | ||
154f757f CC |
279 | /* |
280 | * max77693_muic_set_path - Set hardware line according to attached cable | |
281 | * @info: the instance including private data of max77693 MUIC | |
282 | * @value: the path according to attached cable | |
283 | * @attached: the state of cable (true:attached, false:detached) | |
284 | * | |
285 | * The max77693 MUIC device share outside H/W line among a varity of cables | |
286 | * so, this function set internal path of H/W line according to the type of | |
287 | * attached cable. | |
288 | */ | |
db1b9037 CC |
289 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
290 | u8 val, bool attached) | |
291 | { | |
292 | int ret = 0; | |
d0540f91 | 293 | unsigned int ctrl1, ctrl2 = 0; |
db1b9037 CC |
294 | |
295 | if (attached) | |
296 | ctrl1 = val; | |
297 | else | |
298 | ctrl1 = CONTROL1_SW_OPEN; | |
299 | ||
d0540f91 RB |
300 | ret = regmap_update_bits(info->max77693->regmap_muic, |
301 | MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); | |
db1b9037 CC |
302 | if (ret < 0) { |
303 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 304 | return ret; |
db1b9037 CC |
305 | } |
306 | ||
307 | if (attached) | |
308 | ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ | |
309 | else | |
310 | ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ | |
311 | ||
d0540f91 RB |
312 | ret = regmap_update_bits(info->max77693->regmap_muic, |
313 | MAX77693_MUIC_REG_CTRL2, | |
314 | CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2); | |
db1b9037 CC |
315 | if (ret < 0) { |
316 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 317 | return ret; |
db1b9037 CC |
318 | } |
319 | ||
320 | dev_info(info->dev, | |
321 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
322 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
323 | |
324 | return 0; | |
db1b9037 CC |
325 | } |
326 | ||
154f757f CC |
327 | /* |
328 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
329 | * @info: the instance including private data of max77693 MUIC | |
330 | * @group: the path according to attached cable | |
331 | * @attached: store cable state and return | |
332 | * | |
333 | * This function check the cable state either attached or detached, | |
334 | * and then divide precise type of cable according to cable group. | |
335 | * - MAX77693_CABLE_GROUP_ADC | |
336 | * - MAX77693_CABLE_GROUP_ADC_GND | |
337 | * - MAX77693_CABLE_GROUP_CHG | |
338 | * - MAX77693_CABLE_GROUP_VBVOLT | |
339 | */ | |
340 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
341 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 342 | { |
154f757f CC |
343 | int cable_type = 0; |
344 | int adc; | |
345 | int adc1k; | |
346 | int adclow; | |
347 | int vbvolt; | |
348 | int chg_type; | |
349 | ||
350 | switch (group) { | |
351 | case MAX77693_CABLE_GROUP_ADC: | |
352 | /* | |
353 | * Read ADC value to check cable type and decide cable state | |
354 | * according to cable type | |
355 | */ | |
356 | adc = info->status[0] & STATUS1_ADC_MASK; | |
357 | adc >>= STATUS1_ADC_SHIFT; | |
358 | ||
359 | /* | |
360 | * Check current cable state/cable type and store cable type | |
361 | * (info->prev_cable_type) for handling cable when cable is | |
362 | * detached. | |
363 | */ | |
364 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
365 | *attached = false; | |
366 | ||
367 | cable_type = info->prev_cable_type; | |
368 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
369 | } else { | |
370 | *attached = true; | |
371 | ||
372 | cable_type = info->prev_cable_type = adc; | |
373 | } | |
374 | break; | |
375 | case MAX77693_CABLE_GROUP_ADC_GND: | |
376 | /* | |
377 | * Read ADC value to check cable type and decide cable state | |
378 | * according to cable type | |
379 | */ | |
380 | adc = info->status[0] & STATUS1_ADC_MASK; | |
381 | adc >>= STATUS1_ADC_SHIFT; | |
db1b9037 | 382 | |
154f757f CC |
383 | /* |
384 | * Check current cable state/cable type and store cable type | |
385 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
386 | * is detached. | |
387 | */ | |
388 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
389 | *attached = false; | |
390 | ||
391 | cable_type = info->prev_cable_type_gnd; | |
392 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
393 | } else { | |
394 | *attached = true; | |
395 | ||
396 | adclow = info->status[0] & STATUS1_ADCLOW_MASK; | |
397 | adclow >>= STATUS1_ADCLOW_SHIFT; | |
398 | adc1k = info->status[0] & STATUS1_ADC1K_MASK; | |
399 | adc1k >>= STATUS1_ADC1K_SHIFT; | |
400 | ||
401 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; | |
402 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
403 | ||
404 | /** | |
c2275d2f CC |
405 | * [0x1|VBVolt|ADCLow|ADC1K] |
406 | * [0x1| 0| 0| 0] USB_OTG | |
407 | * [0x1| 1| 0| 0] USB_OTG_VB | |
408 | * [0x1| 0| 1| 0] Audio Video cable with load | |
409 | * [0x1| 0| 1| 1] MHL without charging cable | |
410 | * [0x1| 1| 1| 1] MHL with charging cable | |
154f757f CC |
411 | */ |
412 | cable_type = ((0x1 << 8) | |
413 | | (vbvolt << 2) | |
414 | | (adclow << 1) | |
415 | | adc1k); | |
416 | ||
417 | info->prev_cable_type = adc; | |
418 | info->prev_cable_type_gnd = cable_type; | |
419 | } | |
420 | ||
421 | break; | |
422 | case MAX77693_CABLE_GROUP_CHG: | |
423 | /* | |
424 | * Read charger type to check cable type and decide cable state | |
425 | * according to type of charger cable. | |
426 | */ | |
427 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
428 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
429 | ||
430 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
431 | *attached = false; | |
432 | ||
433 | cable_type = info->prev_chg_type; | |
434 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
435 | } else { | |
436 | *attached = true; | |
437 | ||
438 | /* | |
439 | * Check current cable state/cable type and store cable | |
440 | * type(info->prev_chg_type) for handling cable when | |
441 | * charger cable is detached. | |
442 | */ | |
443 | cable_type = info->prev_chg_type = chg_type; | |
444 | } | |
445 | ||
446 | break; | |
447 | case MAX77693_CABLE_GROUP_VBVOLT: | |
448 | /* | |
449 | * Read ADC value to check cable type and decide cable state | |
450 | * according to cable type | |
451 | */ | |
db1b9037 | 452 | adc = info->status[0] & STATUS1_ADC_MASK; |
154f757f CC |
453 | adc >>= STATUS1_ADC_SHIFT; |
454 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
455 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
456 | ||
457 | if (adc == MAX77693_MUIC_ADC_OPEN | |
458 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
459 | *attached = false; | |
460 | else | |
461 | *attached = true; | |
462 | ||
463 | /* | |
464 | * Read vbvolt field, if vbvolt is 1, | |
465 | * this cable is used for charging. | |
db1b9037 | 466 | */ |
154f757f CC |
467 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
468 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
469 | ||
470 | cable_type = vbvolt; | |
471 | break; | |
472 | default: | |
473 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
474 | cable_type = -EINVAL; | |
475 | break; | |
476 | } | |
477 | ||
478 | return cable_type; | |
479 | } | |
480 | ||
39bf369e CC |
481 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
482 | int cable_type, bool attached) | |
483 | { | |
484 | int ret = 0; | |
a1626298 CC |
485 | int vbvolt; |
486 | bool cable_attached; | |
39bf369e CC |
487 | char dock_name[CABLE_NAME_MAX]; |
488 | ||
489 | dev_info(info->dev, | |
490 | "external connector is %s (adc:0x%02x)\n", | |
491 | attached ? "attached" : "detached", cable_type); | |
492 | ||
493 | switch (cable_type) { | |
494 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
495 | /* |
496 | * Check power cable whether attached or detached state. | |
497 | * The Dock-Smart device need surely external power supply. | |
498 | * If power cable(USB/TA) isn't connected to Dock device, | |
499 | * user can't use Dock-Smart for desktop mode. | |
500 | */ | |
501 | vbvolt = max77693_muic_get_cable_type(info, | |
502 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
503 | if (attached && !vbvolt) { | |
504 | dev_warn(info->dev, | |
505 | "Cannot detect external power supply\n"); | |
506 | return 0; | |
507 | } | |
508 | ||
509 | /* | |
510 | * Notify Dock-Smart/MHL state. | |
511 | * - Dock-Smart device include three type of cable which | |
512 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
513 | * for USB/TA cable. Dock-Smart device need always exteranl | |
514 | * power supply(USB/TA cable through micro-usb cable). Dock- | |
515 | * Smart device support screen output of target to separate | |
516 | * monitor and mouse/keyboard for desktop mode. | |
517 | * | |
518 | * Features of 'USB/TA cable with Dock-Smart device' | |
519 | * - Support MHL | |
520 | * - Support external output feature of audio | |
521 | * - Support charging through micro-usb port without data | |
522 | * connection if TA cable is connected to target. | |
523 | * - Support charging and data connection through micro-usb port | |
524 | * if USB cable is connected between target and host | |
525 | * device. | |
526 | * - Support OTG device (Mouse/Keyboard) | |
527 | */ | |
528 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 529 | if (ret < 0) |
a1626298 | 530 | return ret; |
39bf369e | 531 | |
39bf369e | 532 | extcon_set_cable_state(info->edev, "Dock-Smart", attached); |
a1626298 | 533 | extcon_set_cable_state(info->edev, "MHL", attached); |
39bf369e CC |
534 | goto out; |
535 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
536 | strcpy(dock_name, "Dock-Car"); | |
537 | break; | |
538 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
539 | strcpy(dock_name, "Dock-Desk"); | |
540 | break; | |
541 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
542 | strcpy(dock_name, "Dock-Audio"); | |
543 | if (!attached) | |
544 | extcon_set_cable_state(info->edev, "USB", false); | |
545 | break; | |
19d3243e CC |
546 | default: |
547 | dev_err(info->dev, "failed to detect %s dock device\n", | |
548 | attached ? "attached" : "detached"); | |
549 | return -EINVAL; | |
39bf369e CC |
550 | } |
551 | ||
552 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
553 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); | |
554 | if (ret < 0) | |
a1626298 | 555 | return ret; |
39bf369e CC |
556 | extcon_set_cable_state(info->edev, dock_name, attached); |
557 | ||
558 | out: | |
a1626298 | 559 | return 0; |
39bf369e CC |
560 | } |
561 | ||
562 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
563 | int button_type, bool attached) | |
564 | { | |
565 | struct input_dev *dock = info->dock; | |
566 | unsigned int code; | |
39bf369e CC |
567 | |
568 | switch (button_type) { | |
569 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
570 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
571 | /* DOCK_KEY_PREV */ | |
572 | code = KEY_PREVIOUSSONG; | |
573 | break; | |
574 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
575 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
576 | /* DOCK_KEY_NEXT */ | |
577 | code = KEY_NEXTSONG; | |
578 | break; | |
579 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
580 | /* DOCK_VOL_DOWN */ | |
581 | code = KEY_VOLUMEDOWN; | |
582 | break; | |
583 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
584 | /* DOCK_VOL_UP */ | |
585 | code = KEY_VOLUMEUP; | |
586 | break; | |
587 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
588 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
589 | /* DOCK_KEY_PLAY_PAUSE */ | |
590 | code = KEY_PLAYPAUSE; | |
591 | break; | |
592 | default: | |
593 | dev_err(info->dev, | |
594 | "failed to detect %s key (adc:0x%x)\n", | |
595 | attached ? "pressed" : "released", button_type); | |
19d3243e | 596 | return -EINVAL; |
39bf369e CC |
597 | } |
598 | ||
599 | input_event(dock, EV_KEY, code, attached); | |
600 | input_sync(dock); | |
601 | ||
39bf369e CC |
602 | return 0; |
603 | } | |
604 | ||
154f757f CC |
605 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
606 | { | |
607 | int cable_type_gnd; | |
608 | int ret = 0; | |
609 | bool attached; | |
db1b9037 | 610 | |
154f757f CC |
611 | cable_type_gnd = max77693_muic_get_cable_type(info, |
612 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 613 | |
154f757f | 614 | switch (cable_type_gnd) { |
db1b9037 | 615 | case MAX77693_MUIC_GND_USB_OTG: |
06bed0af CC |
616 | case MAX77693_MUIC_GND_USB_OTG_VB: |
617 | /* USB_OTG, PATH: AP_USB */ | |
db1b9037 CC |
618 | ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
619 | if (ret < 0) | |
19d3243e | 620 | return ret; |
db1b9037 CC |
621 | extcon_set_cable_state(info->edev, "USB-Host", attached); |
622 | break; | |
623 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 624 | /* Audio Video Cable with load, PATH:AUDIO */ |
db1b9037 CC |
625 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
626 | if (ret < 0) | |
19d3243e | 627 | return ret; |
db1b9037 CC |
628 | extcon_set_cable_state(info->edev, |
629 | "Audio-video-load", attached); | |
630 | break; | |
06bed0af CC |
631 | case MAX77693_MUIC_GND_MHL: |
632 | case MAX77693_MUIC_GND_MHL_VB: | |
633 | /* MHL or MHL with USB/TA cable */ | |
db1b9037 CC |
634 | extcon_set_cable_state(info->edev, "MHL", attached); |
635 | break; | |
636 | default: | |
19d3243e | 637 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 638 | attached ? "attached" : "detached"); |
19d3243e | 639 | return -EINVAL; |
db1b9037 CC |
640 | } |
641 | ||
19d3243e | 642 | return 0; |
db1b9037 CC |
643 | } |
644 | ||
d0587eb7 CC |
645 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
646 | int cable_type, bool attached) | |
647 | { | |
648 | char cable_name[32]; | |
649 | int ret = 0; | |
650 | u8 path = CONTROL1_SW_OPEN; | |
651 | ||
652 | dev_info(info->dev, | |
653 | "external connector is %s (adc:0x%02x)\n", | |
654 | attached ? "attached" : "detached", cable_type); | |
655 | ||
656 | switch (cable_type) { | |
657 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
658 | /* PATH:AP_USB */ | |
659 | strcpy(cable_name, "JIG-USB-OFF"); | |
660 | path = CONTROL1_SW_USB; | |
661 | break; | |
662 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ | |
663 | /* PATH:AP_USB */ | |
664 | strcpy(cable_name, "JIG-USB-ON"); | |
665 | path = CONTROL1_SW_USB; | |
666 | break; | |
667 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
668 | /* PATH:AP_UART */ | |
669 | strcpy(cable_name, "JIG-UART-OFF"); | |
670 | path = CONTROL1_SW_UART; | |
671 | break; | |
19d3243e CC |
672 | default: |
673 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
674 | attached ? "attached" : "detached"); | |
675 | return -EINVAL; | |
d0587eb7 CC |
676 | } |
677 | ||
678 | ret = max77693_muic_set_path(info, path, attached); | |
679 | if (ret < 0) | |
19d3243e | 680 | return ret; |
d0587eb7 CC |
681 | |
682 | extcon_set_cable_state(info->edev, cable_name, attached); | |
19d3243e CC |
683 | |
684 | return 0; | |
d0587eb7 CC |
685 | } |
686 | ||
154f757f | 687 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 688 | { |
154f757f | 689 | int cable_type; |
39bf369e | 690 | int button_type; |
154f757f | 691 | bool attached; |
db1b9037 | 692 | int ret = 0; |
db1b9037 | 693 | |
154f757f CC |
694 | /* Check accessory state which is either detached or attached */ |
695 | cable_type = max77693_muic_get_cable_type(info, | |
696 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
697 | |
698 | dev_info(info->dev, | |
699 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
700 | attached ? "attached" : "detached", cable_type, |
701 | info->prev_cable_type); | |
db1b9037 | 702 | |
154f757f | 703 | switch (cable_type) { |
db1b9037 CC |
704 | case MAX77693_MUIC_ADC_GROUND: |
705 | /* USB_OTG/MHL/Audio */ | |
154f757f | 706 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
707 | break; |
708 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
709 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 710 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
db1b9037 | 711 | /* JIG */ |
d0587eb7 | 712 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 713 | if (ret < 0) |
19d3243e | 714 | return ret; |
db1b9037 | 715 | break; |
39bf369e CC |
716 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
717 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
718 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
719 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
720 | /* | |
721 | * DOCK device | |
722 | * | |
723 | * The MAX77693 MUIC device can detect total 34 cable type | |
724 | * except of charger cable and MUIC device didn't define | |
725 | * specfic role of cable in the range of from 0x01 to 0x12 | |
726 | * of ADC value. So, can use/define cable with no role according | |
727 | * to schema of hardware board. | |
728 | */ | |
729 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
730 | if (ret < 0) | |
19d3243e | 731 | return ret; |
39bf369e | 732 | break; |
c2275d2f CC |
733 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
734 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
735 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
736 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
737 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
39bf369e CC |
738 | /* |
739 | * Button of DOCK device | |
740 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
741 | * | |
742 | * The MAX77693 MUIC device can detect total 34 cable type | |
743 | * except of charger cable and MUIC device didn't define | |
744 | * specfic role of cable in the range of from 0x01 to 0x12 | |
745 | * of ADC value. So, can use/define cable with no role according | |
746 | * to schema of hardware board. | |
747 | */ | |
748 | if (attached) | |
749 | button_type = info->prev_button_type = cable_type; | |
750 | else | |
751 | button_type = info->prev_button_type; | |
752 | ||
753 | ret = max77693_muic_dock_button_handler(info, button_type, | |
754 | attached); | |
db1b9037 | 755 | if (ret < 0) |
19d3243e | 756 | return ret; |
db1b9037 CC |
757 | break; |
758 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
759 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
760 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
761 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
762 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
763 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 764 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 765 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
766 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
767 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
768 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
769 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
770 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
771 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
772 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
773 | case MAX77693_MUIC_ADC_UART_CABLE: | |
774 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 775 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
776 | /* |
777 | * This accessory isn't used in general case if it is specially | |
778 | * needed to detect additional accessory, should implement | |
779 | * proper operation when this accessory is attached/detached. | |
780 | */ | |
db1b9037 CC |
781 | dev_info(info->dev, |
782 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 783 | attached ? "attached" : "detached", cable_type); |
19d3243e | 784 | return -EAGAIN; |
db1b9037 CC |
785 | default: |
786 | dev_err(info->dev, | |
787 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 788 | attached ? "attached" : "detached", cable_type); |
19d3243e | 789 | return -EINVAL; |
db1b9037 CC |
790 | } |
791 | ||
19d3243e | 792 | return 0; |
db1b9037 CC |
793 | } |
794 | ||
154f757f | 795 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 796 | { |
db1b9037 | 797 | int chg_type; |
06bed0af | 798 | int cable_type_gnd; |
39bf369e | 799 | int cable_type; |
154f757f | 800 | bool attached; |
06bed0af | 801 | bool cable_attached; |
154f757f | 802 | int ret = 0; |
db1b9037 | 803 | |
154f757f CC |
804 | chg_type = max77693_muic_get_cable_type(info, |
805 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
806 | |
807 | dev_info(info->dev, | |
808 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
809 | attached ? "attached" : "detached", | |
154f757f | 810 | chg_type, info->prev_chg_type); |
db1b9037 CC |
811 | |
812 | switch (chg_type) { | |
813 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 814 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 815 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 816 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
817 | cable_type_gnd = max77693_muic_get_cable_type(info, |
818 | MAX77693_CABLE_GROUP_ADC_GND, | |
819 | &cable_attached); | |
a1626298 CC |
820 | switch (cable_type_gnd) { |
821 | case MAX77693_MUIC_GND_MHL: | |
822 | case MAX77693_MUIC_GND_MHL_VB: | |
823 | /* | |
824 | * MHL cable with MHL_TA(USB/TA) cable | |
c2275d2f CC |
825 | * - MHL cable include two port(HDMI line and separate |
826 | * micro-usb port. When the target connect MHL cable, | |
827 | * extcon driver check whether MHL_TA(USB/TA) cable is | |
828 | * connected. If MHL_TA cable is connected, extcon | |
829 | * driver notify state to notifiee for charging battery. | |
a1626298 CC |
830 | * |
831 | * Features of 'MHL_TA(USB/TA) with MHL cable' | |
832 | * - Support MHL | |
c2275d2f CC |
833 | * - Support charging through micro-usb port without |
834 | * data connection | |
a1626298 | 835 | */ |
06bed0af | 836 | extcon_set_cable_state(info->edev, "MHL_TA", attached); |
06bed0af | 837 | if (!cable_attached) |
c2275d2f CC |
838 | extcon_set_cable_state(info->edev, |
839 | "MHL", cable_attached); | |
a1626298 | 840 | break; |
39bf369e CC |
841 | } |
842 | ||
a1626298 | 843 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
844 | cable_type = max77693_muic_get_cable_type(info, |
845 | MAX77693_CABLE_GROUP_ADC, | |
846 | &cable_attached); | |
a1626298 CC |
847 | switch (cable_type) { |
848 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
849 | /* | |
850 | * Dock-Audio device with USB/TA cable | |
c2275d2f CC |
851 | * - Dock device include two port(Dock-Audio and micro- |
852 | * usb port). When the target connect Dock-Audio device, | |
853 | * extcon driver check whether USB/TA cable is connected | |
854 | * or not. If USB/TA cable is connected, extcon driver | |
855 | * notify state to notifiee for charging battery. | |
a1626298 CC |
856 | * |
857 | * Features of 'USB/TA cable with Dock-Audio device' | |
858 | * - Support external output feature of audio. | |
c2275d2f CC |
859 | * - Support charging through micro-usb port without |
860 | * data connection. | |
a1626298 | 861 | */ |
06bed0af | 862 | extcon_set_cable_state(info->edev, "USB", attached); |
39bf369e CC |
863 | |
864 | if (!cable_attached) | |
c2275d2f CC |
865 | extcon_set_cable_state(info->edev, "Dock-Audio", |
866 | cable_attached); | |
a1626298 CC |
867 | break; |
868 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
869 | /* | |
870 | * Dock-Smart device with USB/TA cable | |
871 | * - Dock-Desk device include three type of cable which | |
872 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
c2275d2f CC |
873 | * for USB/TA cable. Dock-Smart device need always |
874 | * exteranl power supply(USB/TA cable through micro-usb | |
875 | * cable). Dock-Smart device support screen output of | |
876 | * target to separate monitor and mouse/keyboard for | |
877 | * desktop mode. | |
a1626298 CC |
878 | * |
879 | * Features of 'USB/TA cable with Dock-Smart device' | |
880 | * - Support MHL | |
881 | * - Support external output feature of audio | |
c2275d2f CC |
882 | * - Support charging through micro-usb port without |
883 | * data connection if TA cable is connected to target. | |
884 | * - Support charging and data connection through micro- | |
885 | * usb port if USB cable is connected between target | |
886 | * and host device | |
a1626298 CC |
887 | * - Support OTG device (Mouse/Keyboard) |
888 | */ | |
c2275d2f CC |
889 | ret = max77693_muic_set_path(info, info->path_usb, |
890 | attached); | |
a1626298 CC |
891 | if (ret < 0) |
892 | return ret; | |
893 | ||
c2275d2f CC |
894 | extcon_set_cable_state(info->edev, "Dock-Smart", |
895 | attached); | |
a1626298 CC |
896 | extcon_set_cable_state(info->edev, "MHL", attached); |
897 | ||
898 | break; | |
06bed0af | 899 | } |
39bf369e | 900 | |
a1626298 CC |
901 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
902 | switch (chg_type) { | |
903 | case MAX77693_CHARGER_TYPE_NONE: | |
904 | /* | |
c2275d2f CC |
905 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
906 | * cable is attached, muic device happen below two irq. | |
907 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting | |
908 | * MHL/Dock-Audio. | |
909 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting | |
910 | * USB/TA cable connected to MHL or Dock-Audio. | |
911 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC | |
912 | * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. | |
a1626298 | 913 | * |
c2275d2f CC |
914 | * If user attach MHL (with USB/TA cable and immediately |
915 | * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ | |
916 | * _INT2_CHGTYP irq is happened, USB/TA cable remain | |
917 | * connected state to target. But USB/TA cable isn't | |
918 | * connected to target. The user be face with unusual | |
919 | * action. So, driver should check this situation in | |
920 | * spite of, that previous charger type is N/A. | |
a1626298 | 921 | */ |
0e2738f5 | 922 | break; |
a1626298 CC |
923 | case MAX77693_CHARGER_TYPE_USB: |
924 | /* Only USB cable, PATH:AP_USB */ | |
c2275d2f CC |
925 | ret = max77693_muic_set_path(info, info->path_usb, |
926 | attached); | |
a1626298 CC |
927 | if (ret < 0) |
928 | return ret; | |
0e2738f5 | 929 | |
a1626298 CC |
930 | extcon_set_cable_state(info->edev, "USB", attached); |
931 | break; | |
932 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
933 | /* Only TA cable */ | |
934 | extcon_set_cable_state(info->edev, "TA", attached); | |
935 | break; | |
936 | } | |
db1b9037 CC |
937 | break; |
938 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
939 | extcon_set_cable_state(info->edev, | |
940 | "Charge-downstream", attached); | |
941 | break; | |
db1b9037 CC |
942 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
943 | extcon_set_cable_state(info->edev, "Slow-charger", attached); | |
944 | break; | |
945 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
946 | extcon_set_cable_state(info->edev, "Fast-charger", attached); | |
947 | break; | |
948 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
949 | break; | |
950 | default: | |
951 | dev_err(info->dev, | |
952 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
953 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 954 | return -EINVAL; |
db1b9037 CC |
955 | } |
956 | ||
a1626298 | 957 | return 0; |
db1b9037 CC |
958 | } |
959 | ||
960 | static void max77693_muic_irq_work(struct work_struct *work) | |
961 | { | |
962 | struct max77693_muic_info *info = container_of(work, | |
963 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
964 | int irq_type = -1; |
965 | int i, ret = 0; | |
db1b9037 CC |
966 | |
967 | if (!info->edev) | |
968 | return; | |
969 | ||
970 | mutex_lock(&info->mutex); | |
971 | ||
a33411b2 | 972 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
db1b9037 CC |
973 | if (info->irq == muic_irqs[i].virq) |
974 | irq_type = muic_irqs[i].irq; | |
975 | ||
d0540f91 RB |
976 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
977 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
978 | if (ret) { |
979 | dev_err(info->dev, "failed to read MUIC register\n"); | |
980 | mutex_unlock(&info->mutex); | |
981 | return; | |
982 | } | |
983 | ||
984 | switch (irq_type) { | |
985 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
986 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
987 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
988 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
989 | /* Handle all of accessory except for | |
990 | type of charger accessory */ | |
154f757f | 991 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
992 | break; |
993 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
994 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
995 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
996 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
997 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
998 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
999 | /* Handle charger accessory */ | |
154f757f | 1000 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
1001 | break; |
1002 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
1003 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
1004 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
1005 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
1006 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
1007 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
1008 | break; | |
1009 | default: | |
1010 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
1011 | irq_type); | |
19d3243e CC |
1012 | mutex_unlock(&info->mutex); |
1013 | return; | |
db1b9037 CC |
1014 | } |
1015 | ||
1016 | if (ret < 0) | |
1017 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
1018 | ||
1019 | mutex_unlock(&info->mutex); | |
1020 | ||
1021 | return; | |
1022 | } | |
1023 | ||
1024 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
1025 | { | |
1026 | struct max77693_muic_info *info = data; | |
1027 | ||
1028 | info->irq = irq; | |
1029 | schedule_work(&info->irq_work); | |
1030 | ||
1031 | return IRQ_HANDLED; | |
1032 | } | |
1033 | ||
1034 | static struct regmap_config max77693_muic_regmap_config = { | |
1035 | .reg_bits = 8, | |
1036 | .val_bits = 8, | |
1037 | }; | |
1038 | ||
1039 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
1040 | { | |
1041 | int ret = 0; | |
154f757f CC |
1042 | int adc; |
1043 | int chg_type; | |
1044 | bool attached; | |
db1b9037 CC |
1045 | |
1046 | mutex_lock(&info->mutex); | |
1047 | ||
1048 | /* Read STATUSx register to detect accessory */ | |
d0540f91 RB |
1049 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
1050 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
1051 | if (ret) { |
1052 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1053 | mutex_unlock(&info->mutex); | |
c2536543 | 1054 | return ret; |
db1b9037 CC |
1055 | } |
1056 | ||
154f757f CC |
1057 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1058 | &attached); | |
1059 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1060 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1061 | if (ret < 0) { |
154f757f | 1062 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1063 | mutex_unlock(&info->mutex); |
1064 | return ret; | |
1065 | } | |
db1b9037 CC |
1066 | } |
1067 | ||
154f757f CC |
1068 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1069 | &attached); | |
1070 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1071 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1072 | if (ret < 0) { |
154f757f | 1073 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1074 | mutex_unlock(&info->mutex); |
1075 | return ret; | |
1076 | } | |
db1b9037 CC |
1077 | } |
1078 | ||
db1b9037 | 1079 | mutex_unlock(&info->mutex); |
154f757f | 1080 | |
19d3243e | 1081 | return 0; |
db1b9037 CC |
1082 | } |
1083 | ||
297620fd CC |
1084 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1085 | { | |
1086 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1087 | struct max77693_muic_info, wq_detcable); | |
1088 | ||
1089 | max77693_muic_detect_accessory(info); | |
1090 | } | |
1091 | ||
44f34fd4 | 1092 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1093 | { |
1094 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 | 1095 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
db1b9037 | 1096 | struct max77693_muic_info *info; |
0ec83bd2 CC |
1097 | struct max77693_reg_data *init_data; |
1098 | int num_init_data; | |
297620fd CC |
1099 | int delay_jiffies; |
1100 | int ret; | |
1101 | int i; | |
d0540f91 | 1102 | unsigned int id; |
db1b9037 | 1103 | |
f4bb5cb5 SK |
1104 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1105 | GFP_KERNEL); | |
0a16ee63 | 1106 | if (!info) |
f4bb5cb5 | 1107 | return -ENOMEM; |
0a16ee63 | 1108 | |
db1b9037 CC |
1109 | info->dev = &pdev->dev; |
1110 | info->max77693 = max77693; | |
1967fa08 | 1111 | if (info->max77693->regmap_muic) { |
b186b124 | 1112 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1113 | } else { |
b186b124 CC |
1114 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
1115 | info->max77693->muic, | |
1116 | &max77693_muic_regmap_config); | |
1117 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1118 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1119 | dev_err(max77693->dev, | |
1120 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1121 | return ret; |
b186b124 | 1122 | } |
db1b9037 | 1123 | } |
39bf369e CC |
1124 | |
1125 | /* Register input device for button of dock device */ | |
eff7d74f | 1126 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1127 | if (!info->dock) { |
1128 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1129 | return -ENOMEM; | |
1130 | } | |
1131 | info->dock->name = "max77693-muic/dock"; | |
1132 | info->dock->phys = "max77693-muic/extcon"; | |
1133 | info->dock->dev.parent = &pdev->dev; | |
1134 | ||
1135 | __set_bit(EV_REP, info->dock->evbit); | |
1136 | ||
1137 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1138 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1139 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1140 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1141 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1142 | ||
1143 | ret = input_register_device(info->dock); | |
1144 | if (ret < 0) { | |
1145 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1146 | ret); | |
1147 | return ret; | |
1148 | } | |
1149 | ||
db1b9037 CC |
1150 | platform_set_drvdata(pdev, info); |
1151 | mutex_init(&info->mutex); | |
1152 | ||
1153 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); | |
1154 | ||
1155 | /* Support irq domain for MAX77693 MUIC device */ | |
1156 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1157 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
00af4b16 | 1158 | unsigned int virq = 0; |
db1b9037 | 1159 | |
342d669c RB |
1160 | virq = regmap_irq_get_virq(max77693->irq_data_muic, |
1161 | muic_irq->irq); | |
d7155231 KK |
1162 | if (!virq) |
1163 | return -EINVAL; | |
db1b9037 CC |
1164 | muic_irq->virq = virq; |
1165 | ||
d7155231 | 1166 | ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, |
db1b9037 | 1167 | max77693_muic_irq_handler, |
ae3b3215 CC |
1168 | IRQF_NO_SUSPEND, |
1169 | muic_irq->name, info); | |
db1b9037 CC |
1170 | if (ret) { |
1171 | dev_err(&pdev->dev, | |
1172 | "failed: irq request (IRQ: %d," | |
1173 | " error :%d)\n", | |
1174 | muic_irq->irq, ret); | |
d7155231 | 1175 | return ret; |
db1b9037 CC |
1176 | } |
1177 | } | |
1178 | ||
1179 | /* Initialize extcon device */ | |
577bef11 CC |
1180 | info->edev = devm_extcon_dev_allocate(&pdev->dev, |
1181 | max77693_extcon_cable); | |
1182 | if (IS_ERR(info->edev)) { | |
db1b9037 | 1183 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
d7155231 | 1184 | return -ENOMEM; |
db1b9037 CC |
1185 | } |
1186 | info->edev->name = DEV_NAME; | |
577bef11 | 1187 | |
10fae118 | 1188 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
db1b9037 CC |
1189 | if (ret) { |
1190 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
d7155231 | 1191 | return ret; |
db1b9037 CC |
1192 | } |
1193 | ||
0ec83bd2 | 1194 | /* Initialize MUIC register by using platform data or default data */ |
d5653f2b | 1195 | if (pdata && pdata->muic_data) { |
0ec83bd2 CC |
1196 | init_data = pdata->muic_data->init_data; |
1197 | num_init_data = pdata->muic_data->num_init_data; | |
1198 | } else { | |
1199 | init_data = default_init_data; | |
1200 | num_init_data = ARRAY_SIZE(default_init_data); | |
1201 | } | |
1202 | ||
a33411b2 | 1203 | for (i = 0; i < num_init_data; i++) { |
0ec83bd2 CC |
1204 | enum max77693_irq_source irq_src |
1205 | = MAX77693_IRQ_GROUP_NR; | |
190d7cfc | 1206 | |
d0540f91 | 1207 | regmap_write(info->max77693->regmap_muic, |
0ec83bd2 CC |
1208 | init_data[i].addr, |
1209 | init_data[i].data); | |
1210 | ||
1211 | switch (init_data[i].addr) { | |
1212 | case MAX77693_MUIC_REG_INTMASK1: | |
1213 | irq_src = MUIC_INT1; | |
1214 | break; | |
1215 | case MAX77693_MUIC_REG_INTMASK2: | |
1216 | irq_src = MUIC_INT2; | |
1217 | break; | |
1218 | case MAX77693_MUIC_REG_INTMASK3: | |
1219 | irq_src = MUIC_INT3; | |
1220 | break; | |
f8457d57 CC |
1221 | } |
1222 | ||
0ec83bd2 CC |
1223 | if (irq_src < MAX77693_IRQ_GROUP_NR) |
1224 | info->max77693->irq_masks_cur[irq_src] | |
1225 | = init_data[i].data; | |
1226 | } | |
1227 | ||
d5653f2b | 1228 | if (pdata && pdata->muic_data) { |
c2275d2f CC |
1229 | struct max77693_muic_platform_data *muic_pdata |
1230 | = pdata->muic_data; | |
0ec83bd2 | 1231 | |
190d7cfc CC |
1232 | /* |
1233 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1234 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1235 | */ | |
1236 | if (muic_pdata->path_uart) | |
1237 | info->path_uart = muic_pdata->path_uart; | |
1238 | else | |
1239 | info->path_uart = CONTROL1_SW_UART; | |
f8457d57 | 1240 | |
190d7cfc CC |
1241 | if (muic_pdata->path_usb) |
1242 | info->path_usb = muic_pdata->path_usb; | |
1243 | else | |
1244 | info->path_usb = CONTROL1_SW_USB; | |
2b75799f | 1245 | |
190d7cfc CC |
1246 | /* |
1247 | * Default delay time for detecting cable state | |
1248 | * after certain time. | |
1249 | */ | |
1250 | if (muic_pdata->detcable_delay_ms) | |
1251 | delay_jiffies = | |
1252 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1253 | else | |
1254 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1255 | } else { | |
2b75799f | 1256 | info->path_usb = CONTROL1_SW_USB; |
190d7cfc CC |
1257 | info->path_uart = CONTROL1_SW_UART; |
1258 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1259 | } | |
2b75799f CC |
1260 | |
1261 | /* Set initial path for UART */ | |
1262 | max77693_muic_set_path(info, info->path_uart, true); | |
1263 | ||
db1b9037 | 1264 | /* Check revision number of MUIC device*/ |
d0540f91 | 1265 | ret = regmap_read(info->max77693->regmap_muic, |
db1b9037 CC |
1266 | MAX77693_MUIC_REG_ID, &id); |
1267 | if (ret < 0) { | |
1268 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
d7155231 | 1269 | return ret; |
db1b9037 CC |
1270 | } |
1271 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1272 | ||
1273 | /* Set ADC debounce time */ | |
1274 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1275 | ||
297620fd CC |
1276 | /* |
1277 | * Detect accessory after completing the initialization of platform | |
1278 | * | |
1279 | * - Use delayed workqueue to detect cable state and then | |
1280 | * notify cable state to notifiee/platform through uevent. | |
1281 | * After completing the booting of platform, the extcon provider | |
1282 | * driver should notify cable state to upper layer. | |
1283 | */ | |
1284 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
b8629411 KK |
1285 | queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
1286 | delay_jiffies); | |
db1b9037 CC |
1287 | |
1288 | return ret; | |
db1b9037 CC |
1289 | } |
1290 | ||
93ed0327 | 1291 | static int max77693_muic_remove(struct platform_device *pdev) |
db1b9037 CC |
1292 | { |
1293 | struct max77693_muic_info *info = platform_get_drvdata(pdev); | |
db1b9037 | 1294 | |
db1b9037 | 1295 | cancel_work_sync(&info->irq_work); |
39bf369e | 1296 | input_unregister_device(info->dock); |
db1b9037 CC |
1297 | |
1298 | return 0; | |
1299 | } | |
1300 | ||
1301 | static struct platform_driver max77693_muic_driver = { | |
1302 | .driver = { | |
1303 | .name = DEV_NAME, | |
1304 | .owner = THIS_MODULE, | |
1305 | }, | |
1306 | .probe = max77693_muic_probe, | |
5f7e2228 | 1307 | .remove = max77693_muic_remove, |
db1b9037 CC |
1308 | }; |
1309 | ||
1310 | module_platform_driver(max77693_muic_driver); | |
1311 | ||
1312 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1313 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1314 | MODULE_LICENSE("GPL"); | |
1315 | MODULE_ALIAS("platform:extcon-max77693"); |