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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: | |
d0540f91 | 258 | ret = regmap_update_bits(info->max77693->regmap_muic, |
bf2627d6 | 259 | MAX77693_MUIC_REG_CTRL3, |
d0540f91 RB |
260 | CONTROL3_ADCDBSET_MASK, |
261 | time << CONTROL3_ADCDBSET_SHIFT); | |
19d3243e | 262 | if (ret) { |
db1b9037 | 263 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
c2536543 | 264 | return ret; |
19d3243e | 265 | } |
db1b9037 CC |
266 | break; |
267 | default: | |
268 | dev_err(info->dev, "invalid ADC debounce time\n"); | |
19d3243e | 269 | return -EINVAL; |
db1b9037 CC |
270 | } |
271 | ||
19d3243e | 272 | return 0; |
db1b9037 CC |
273 | }; |
274 | ||
154f757f CC |
275 | /* |
276 | * max77693_muic_set_path - Set hardware line according to attached cable | |
277 | * @info: the instance including private data of max77693 MUIC | |
278 | * @value: the path according to attached cable | |
279 | * @attached: the state of cable (true:attached, false:detached) | |
280 | * | |
281 | * The max77693 MUIC device share outside H/W line among a varity of cables | |
282 | * so, this function set internal path of H/W line according to the type of | |
283 | * attached cable. | |
284 | */ | |
db1b9037 CC |
285 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
286 | u8 val, bool attached) | |
287 | { | |
288 | int ret = 0; | |
d0540f91 | 289 | unsigned int ctrl1, ctrl2 = 0; |
db1b9037 CC |
290 | |
291 | if (attached) | |
292 | ctrl1 = val; | |
293 | else | |
294 | ctrl1 = CONTROL1_SW_OPEN; | |
295 | ||
d0540f91 RB |
296 | ret = regmap_update_bits(info->max77693->regmap_muic, |
297 | MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); | |
db1b9037 CC |
298 | if (ret < 0) { |
299 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 300 | return ret; |
db1b9037 CC |
301 | } |
302 | ||
303 | if (attached) | |
304 | ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ | |
305 | else | |
306 | ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ | |
307 | ||
d0540f91 RB |
308 | ret = regmap_update_bits(info->max77693->regmap_muic, |
309 | MAX77693_MUIC_REG_CTRL2, | |
310 | CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2); | |
db1b9037 CC |
311 | if (ret < 0) { |
312 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 313 | return ret; |
db1b9037 CC |
314 | } |
315 | ||
316 | dev_info(info->dev, | |
317 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
318 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
319 | |
320 | return 0; | |
db1b9037 CC |
321 | } |
322 | ||
154f757f CC |
323 | /* |
324 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
325 | * @info: the instance including private data of max77693 MUIC | |
326 | * @group: the path according to attached cable | |
327 | * @attached: store cable state and return | |
328 | * | |
329 | * This function check the cable state either attached or detached, | |
330 | * and then divide precise type of cable according to cable group. | |
331 | * - MAX77693_CABLE_GROUP_ADC | |
332 | * - MAX77693_CABLE_GROUP_ADC_GND | |
333 | * - MAX77693_CABLE_GROUP_CHG | |
334 | * - MAX77693_CABLE_GROUP_VBVOLT | |
335 | */ | |
336 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
337 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 338 | { |
154f757f CC |
339 | int cable_type = 0; |
340 | int adc; | |
341 | int adc1k; | |
342 | int adclow; | |
343 | int vbvolt; | |
344 | int chg_type; | |
345 | ||
346 | switch (group) { | |
347 | case MAX77693_CABLE_GROUP_ADC: | |
348 | /* | |
349 | * Read ADC value to check cable type and decide cable state | |
350 | * according to cable type | |
351 | */ | |
352 | adc = info->status[0] & STATUS1_ADC_MASK; | |
353 | adc >>= STATUS1_ADC_SHIFT; | |
354 | ||
355 | /* | |
356 | * Check current cable state/cable type and store cable type | |
357 | * (info->prev_cable_type) for handling cable when cable is | |
358 | * detached. | |
359 | */ | |
360 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
361 | *attached = false; | |
362 | ||
363 | cable_type = info->prev_cable_type; | |
364 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
365 | } else { | |
366 | *attached = true; | |
367 | ||
368 | cable_type = info->prev_cable_type = adc; | |
369 | } | |
370 | break; | |
371 | case MAX77693_CABLE_GROUP_ADC_GND: | |
372 | /* | |
373 | * Read ADC value to check cable type and decide cable state | |
374 | * according to cable type | |
375 | */ | |
376 | adc = info->status[0] & STATUS1_ADC_MASK; | |
377 | adc >>= STATUS1_ADC_SHIFT; | |
db1b9037 | 378 | |
154f757f CC |
379 | /* |
380 | * Check current cable state/cable type and store cable type | |
381 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
382 | * is detached. | |
383 | */ | |
384 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
385 | *attached = false; | |
386 | ||
387 | cable_type = info->prev_cable_type_gnd; | |
388 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
389 | } else { | |
390 | *attached = true; | |
391 | ||
392 | adclow = info->status[0] & STATUS1_ADCLOW_MASK; | |
393 | adclow >>= STATUS1_ADCLOW_SHIFT; | |
394 | adc1k = info->status[0] & STATUS1_ADC1K_MASK; | |
395 | adc1k >>= STATUS1_ADC1K_SHIFT; | |
396 | ||
397 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; | |
398 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
399 | ||
400 | /** | |
c2275d2f CC |
401 | * [0x1|VBVolt|ADCLow|ADC1K] |
402 | * [0x1| 0| 0| 0] USB_OTG | |
403 | * [0x1| 1| 0| 0] USB_OTG_VB | |
404 | * [0x1| 0| 1| 0] Audio Video cable with load | |
405 | * [0x1| 0| 1| 1] MHL without charging cable | |
406 | * [0x1| 1| 1| 1] MHL with charging cable | |
154f757f CC |
407 | */ |
408 | cable_type = ((0x1 << 8) | |
409 | | (vbvolt << 2) | |
410 | | (adclow << 1) | |
411 | | adc1k); | |
412 | ||
413 | info->prev_cable_type = adc; | |
414 | info->prev_cable_type_gnd = cable_type; | |
415 | } | |
416 | ||
417 | break; | |
418 | case MAX77693_CABLE_GROUP_CHG: | |
419 | /* | |
420 | * Read charger type to check cable type and decide cable state | |
421 | * according to type of charger cable. | |
422 | */ | |
423 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
424 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
425 | ||
426 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
427 | *attached = false; | |
428 | ||
429 | cable_type = info->prev_chg_type; | |
430 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
431 | } else { | |
432 | *attached = true; | |
433 | ||
434 | /* | |
435 | * Check current cable state/cable type and store cable | |
436 | * type(info->prev_chg_type) for handling cable when | |
437 | * charger cable is detached. | |
438 | */ | |
439 | cable_type = info->prev_chg_type = chg_type; | |
440 | } | |
441 | ||
442 | break; | |
443 | case MAX77693_CABLE_GROUP_VBVOLT: | |
444 | /* | |
445 | * Read ADC value to check cable type and decide cable state | |
446 | * according to cable type | |
447 | */ | |
db1b9037 | 448 | adc = info->status[0] & STATUS1_ADC_MASK; |
154f757f CC |
449 | adc >>= STATUS1_ADC_SHIFT; |
450 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
451 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
452 | ||
453 | if (adc == MAX77693_MUIC_ADC_OPEN | |
454 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
455 | *attached = false; | |
456 | else | |
457 | *attached = true; | |
458 | ||
459 | /* | |
460 | * Read vbvolt field, if vbvolt is 1, | |
461 | * this cable is used for charging. | |
db1b9037 | 462 | */ |
154f757f CC |
463 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
464 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
465 | ||
466 | cable_type = vbvolt; | |
467 | break; | |
468 | default: | |
469 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
470 | cable_type = -EINVAL; | |
471 | break; | |
472 | } | |
473 | ||
474 | return cable_type; | |
475 | } | |
476 | ||
39bf369e CC |
477 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
478 | int cable_type, bool attached) | |
479 | { | |
480 | int ret = 0; | |
a1626298 CC |
481 | int vbvolt; |
482 | bool cable_attached; | |
39bf369e CC |
483 | char dock_name[CABLE_NAME_MAX]; |
484 | ||
485 | dev_info(info->dev, | |
486 | "external connector is %s (adc:0x%02x)\n", | |
487 | attached ? "attached" : "detached", cable_type); | |
488 | ||
489 | switch (cable_type) { | |
490 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
491 | /* |
492 | * Check power cable whether attached or detached state. | |
493 | * The Dock-Smart device need surely external power supply. | |
494 | * If power cable(USB/TA) isn't connected to Dock device, | |
495 | * user can't use Dock-Smart for desktop mode. | |
496 | */ | |
497 | vbvolt = max77693_muic_get_cable_type(info, | |
498 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
499 | if (attached && !vbvolt) { | |
500 | dev_warn(info->dev, | |
501 | "Cannot detect external power supply\n"); | |
502 | return 0; | |
503 | } | |
504 | ||
505 | /* | |
506 | * Notify Dock-Smart/MHL state. | |
507 | * - Dock-Smart device include three type of cable which | |
508 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
509 | * for USB/TA cable. Dock-Smart device need always exteranl | |
510 | * power supply(USB/TA cable through micro-usb cable). Dock- | |
511 | * Smart device support screen output of target to separate | |
512 | * monitor and mouse/keyboard for desktop mode. | |
513 | * | |
514 | * Features of 'USB/TA cable with Dock-Smart device' | |
515 | * - Support MHL | |
516 | * - Support external output feature of audio | |
517 | * - Support charging through micro-usb port without data | |
518 | * connection if TA cable is connected to target. | |
519 | * - Support charging and data connection through micro-usb port | |
520 | * if USB cable is connected between target and host | |
521 | * device. | |
522 | * - Support OTG device (Mouse/Keyboard) | |
523 | */ | |
524 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 525 | if (ret < 0) |
a1626298 | 526 | return ret; |
39bf369e | 527 | |
39bf369e | 528 | extcon_set_cable_state(info->edev, "Dock-Smart", attached); |
a1626298 | 529 | extcon_set_cable_state(info->edev, "MHL", attached); |
39bf369e CC |
530 | goto out; |
531 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
532 | strcpy(dock_name, "Dock-Car"); | |
533 | break; | |
534 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
535 | strcpy(dock_name, "Dock-Desk"); | |
536 | break; | |
537 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
538 | strcpy(dock_name, "Dock-Audio"); | |
539 | if (!attached) | |
540 | extcon_set_cable_state(info->edev, "USB", false); | |
541 | break; | |
19d3243e CC |
542 | default: |
543 | dev_err(info->dev, "failed to detect %s dock device\n", | |
544 | attached ? "attached" : "detached"); | |
545 | return -EINVAL; | |
39bf369e CC |
546 | } |
547 | ||
548 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
549 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); | |
550 | if (ret < 0) | |
a1626298 | 551 | return ret; |
39bf369e CC |
552 | extcon_set_cable_state(info->edev, dock_name, attached); |
553 | ||
554 | out: | |
a1626298 | 555 | return 0; |
39bf369e CC |
556 | } |
557 | ||
558 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
559 | int button_type, bool attached) | |
560 | { | |
561 | struct input_dev *dock = info->dock; | |
562 | unsigned int code; | |
39bf369e CC |
563 | |
564 | switch (button_type) { | |
565 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
566 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
567 | /* DOCK_KEY_PREV */ | |
568 | code = KEY_PREVIOUSSONG; | |
569 | break; | |
570 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
571 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
572 | /* DOCK_KEY_NEXT */ | |
573 | code = KEY_NEXTSONG; | |
574 | break; | |
575 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
576 | /* DOCK_VOL_DOWN */ | |
577 | code = KEY_VOLUMEDOWN; | |
578 | break; | |
579 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
580 | /* DOCK_VOL_UP */ | |
581 | code = KEY_VOLUMEUP; | |
582 | break; | |
583 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
584 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
585 | /* DOCK_KEY_PLAY_PAUSE */ | |
586 | code = KEY_PLAYPAUSE; | |
587 | break; | |
588 | default: | |
589 | dev_err(info->dev, | |
590 | "failed to detect %s key (adc:0x%x)\n", | |
591 | attached ? "pressed" : "released", button_type); | |
19d3243e | 592 | return -EINVAL; |
39bf369e CC |
593 | } |
594 | ||
595 | input_event(dock, EV_KEY, code, attached); | |
596 | input_sync(dock); | |
597 | ||
39bf369e CC |
598 | return 0; |
599 | } | |
600 | ||
154f757f CC |
601 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
602 | { | |
603 | int cable_type_gnd; | |
604 | int ret = 0; | |
605 | bool attached; | |
db1b9037 | 606 | |
154f757f CC |
607 | cable_type_gnd = max77693_muic_get_cable_type(info, |
608 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 609 | |
154f757f | 610 | switch (cable_type_gnd) { |
db1b9037 | 611 | case MAX77693_MUIC_GND_USB_OTG: |
06bed0af CC |
612 | case MAX77693_MUIC_GND_USB_OTG_VB: |
613 | /* USB_OTG, PATH: AP_USB */ | |
db1b9037 CC |
614 | ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
615 | if (ret < 0) | |
19d3243e | 616 | return ret; |
db1b9037 CC |
617 | extcon_set_cable_state(info->edev, "USB-Host", attached); |
618 | break; | |
619 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 620 | /* Audio Video Cable with load, PATH:AUDIO */ |
db1b9037 CC |
621 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
622 | if (ret < 0) | |
19d3243e | 623 | return ret; |
db1b9037 CC |
624 | extcon_set_cable_state(info->edev, |
625 | "Audio-video-load", attached); | |
626 | break; | |
06bed0af CC |
627 | case MAX77693_MUIC_GND_MHL: |
628 | case MAX77693_MUIC_GND_MHL_VB: | |
629 | /* MHL or MHL with USB/TA cable */ | |
db1b9037 CC |
630 | extcon_set_cable_state(info->edev, "MHL", attached); |
631 | break; | |
632 | default: | |
19d3243e | 633 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 634 | attached ? "attached" : "detached"); |
19d3243e | 635 | return -EINVAL; |
db1b9037 CC |
636 | } |
637 | ||
19d3243e | 638 | return 0; |
db1b9037 CC |
639 | } |
640 | ||
d0587eb7 CC |
641 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
642 | int cable_type, bool attached) | |
643 | { | |
644 | char cable_name[32]; | |
645 | int ret = 0; | |
646 | u8 path = CONTROL1_SW_OPEN; | |
647 | ||
648 | dev_info(info->dev, | |
649 | "external connector is %s (adc:0x%02x)\n", | |
650 | attached ? "attached" : "detached", cable_type); | |
651 | ||
652 | switch (cable_type) { | |
653 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
654 | /* PATH:AP_USB */ | |
655 | strcpy(cable_name, "JIG-USB-OFF"); | |
656 | path = CONTROL1_SW_USB; | |
657 | break; | |
658 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ | |
659 | /* PATH:AP_USB */ | |
660 | strcpy(cable_name, "JIG-USB-ON"); | |
661 | path = CONTROL1_SW_USB; | |
662 | break; | |
663 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
664 | /* PATH:AP_UART */ | |
665 | strcpy(cable_name, "JIG-UART-OFF"); | |
666 | path = CONTROL1_SW_UART; | |
667 | break; | |
19d3243e CC |
668 | default: |
669 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
670 | attached ? "attached" : "detached"); | |
671 | return -EINVAL; | |
d0587eb7 CC |
672 | } |
673 | ||
674 | ret = max77693_muic_set_path(info, path, attached); | |
675 | if (ret < 0) | |
19d3243e | 676 | return ret; |
d0587eb7 CC |
677 | |
678 | extcon_set_cable_state(info->edev, cable_name, attached); | |
19d3243e CC |
679 | |
680 | return 0; | |
d0587eb7 CC |
681 | } |
682 | ||
154f757f | 683 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 684 | { |
154f757f | 685 | int cable_type; |
39bf369e | 686 | int button_type; |
154f757f | 687 | bool attached; |
db1b9037 | 688 | int ret = 0; |
db1b9037 | 689 | |
154f757f CC |
690 | /* Check accessory state which is either detached or attached */ |
691 | cable_type = max77693_muic_get_cable_type(info, | |
692 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
693 | |
694 | dev_info(info->dev, | |
695 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
696 | attached ? "attached" : "detached", cable_type, |
697 | info->prev_cable_type); | |
db1b9037 | 698 | |
154f757f | 699 | switch (cable_type) { |
db1b9037 CC |
700 | case MAX77693_MUIC_ADC_GROUND: |
701 | /* USB_OTG/MHL/Audio */ | |
154f757f | 702 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
703 | break; |
704 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
705 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 706 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
db1b9037 | 707 | /* JIG */ |
d0587eb7 | 708 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 709 | if (ret < 0) |
19d3243e | 710 | return ret; |
db1b9037 | 711 | break; |
39bf369e CC |
712 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
713 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
714 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
715 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
716 | /* | |
717 | * DOCK device | |
718 | * | |
719 | * The MAX77693 MUIC device can detect total 34 cable type | |
720 | * except of charger cable and MUIC device didn't define | |
721 | * specfic role of cable in the range of from 0x01 to 0x12 | |
722 | * of ADC value. So, can use/define cable with no role according | |
723 | * to schema of hardware board. | |
724 | */ | |
725 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
726 | if (ret < 0) | |
19d3243e | 727 | return ret; |
39bf369e | 728 | break; |
c2275d2f CC |
729 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
730 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
731 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
732 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
733 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
39bf369e CC |
734 | /* |
735 | * Button of DOCK device | |
736 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
737 | * | |
738 | * The MAX77693 MUIC device can detect total 34 cable type | |
739 | * except of charger cable and MUIC device didn't define | |
740 | * specfic role of cable in the range of from 0x01 to 0x12 | |
741 | * of ADC value. So, can use/define cable with no role according | |
742 | * to schema of hardware board. | |
743 | */ | |
744 | if (attached) | |
745 | button_type = info->prev_button_type = cable_type; | |
746 | else | |
747 | button_type = info->prev_button_type; | |
748 | ||
749 | ret = max77693_muic_dock_button_handler(info, button_type, | |
750 | attached); | |
db1b9037 | 751 | if (ret < 0) |
19d3243e | 752 | return ret; |
db1b9037 CC |
753 | break; |
754 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
755 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
756 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
757 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
758 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
759 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 760 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 761 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
762 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
763 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
764 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
765 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
766 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
767 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
768 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
769 | case MAX77693_MUIC_ADC_UART_CABLE: | |
770 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 771 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
772 | /* |
773 | * This accessory isn't used in general case if it is specially | |
774 | * needed to detect additional accessory, should implement | |
775 | * proper operation when this accessory is attached/detached. | |
776 | */ | |
db1b9037 CC |
777 | dev_info(info->dev, |
778 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 779 | attached ? "attached" : "detached", cable_type); |
19d3243e | 780 | return -EAGAIN; |
db1b9037 CC |
781 | default: |
782 | dev_err(info->dev, | |
783 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 784 | attached ? "attached" : "detached", cable_type); |
19d3243e | 785 | return -EINVAL; |
db1b9037 CC |
786 | } |
787 | ||
19d3243e | 788 | return 0; |
db1b9037 CC |
789 | } |
790 | ||
154f757f | 791 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 792 | { |
db1b9037 | 793 | int chg_type; |
06bed0af | 794 | int cable_type_gnd; |
39bf369e | 795 | int cable_type; |
154f757f | 796 | bool attached; |
06bed0af | 797 | bool cable_attached; |
154f757f | 798 | int ret = 0; |
db1b9037 | 799 | |
154f757f CC |
800 | chg_type = max77693_muic_get_cable_type(info, |
801 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
802 | |
803 | dev_info(info->dev, | |
804 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
805 | attached ? "attached" : "detached", | |
154f757f | 806 | chg_type, info->prev_chg_type); |
db1b9037 CC |
807 | |
808 | switch (chg_type) { | |
809 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 810 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 811 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 812 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
813 | cable_type_gnd = max77693_muic_get_cable_type(info, |
814 | MAX77693_CABLE_GROUP_ADC_GND, | |
815 | &cable_attached); | |
a1626298 CC |
816 | switch (cable_type_gnd) { |
817 | case MAX77693_MUIC_GND_MHL: | |
818 | case MAX77693_MUIC_GND_MHL_VB: | |
819 | /* | |
820 | * MHL cable with MHL_TA(USB/TA) cable | |
c2275d2f CC |
821 | * - MHL cable include two port(HDMI line and separate |
822 | * micro-usb port. When the target connect MHL cable, | |
823 | * extcon driver check whether MHL_TA(USB/TA) cable is | |
824 | * connected. If MHL_TA cable is connected, extcon | |
825 | * driver notify state to notifiee for charging battery. | |
a1626298 CC |
826 | * |
827 | * Features of 'MHL_TA(USB/TA) with MHL cable' | |
828 | * - Support MHL | |
c2275d2f CC |
829 | * - Support charging through micro-usb port without |
830 | * data connection | |
a1626298 | 831 | */ |
06bed0af | 832 | extcon_set_cable_state(info->edev, "MHL_TA", attached); |
06bed0af | 833 | if (!cable_attached) |
c2275d2f CC |
834 | extcon_set_cable_state(info->edev, |
835 | "MHL", cable_attached); | |
a1626298 | 836 | break; |
39bf369e CC |
837 | } |
838 | ||
a1626298 | 839 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
840 | cable_type = max77693_muic_get_cable_type(info, |
841 | MAX77693_CABLE_GROUP_ADC, | |
842 | &cable_attached); | |
a1626298 CC |
843 | switch (cable_type) { |
844 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
845 | /* | |
846 | * Dock-Audio device with USB/TA cable | |
c2275d2f CC |
847 | * - Dock device include two port(Dock-Audio and micro- |
848 | * usb port). When the target connect Dock-Audio device, | |
849 | * extcon driver check whether USB/TA cable is connected | |
850 | * or not. If USB/TA cable is connected, extcon driver | |
851 | * notify state to notifiee for charging battery. | |
a1626298 CC |
852 | * |
853 | * Features of 'USB/TA cable with Dock-Audio device' | |
854 | * - Support external output feature of audio. | |
c2275d2f CC |
855 | * - Support charging through micro-usb port without |
856 | * data connection. | |
a1626298 | 857 | */ |
06bed0af | 858 | extcon_set_cable_state(info->edev, "USB", attached); |
39bf369e CC |
859 | |
860 | if (!cable_attached) | |
c2275d2f CC |
861 | extcon_set_cable_state(info->edev, "Dock-Audio", |
862 | cable_attached); | |
a1626298 CC |
863 | break; |
864 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
865 | /* | |
866 | * Dock-Smart device with USB/TA cable | |
867 | * - Dock-Desk device include three type of cable which | |
868 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
c2275d2f CC |
869 | * for USB/TA cable. Dock-Smart device need always |
870 | * exteranl power supply(USB/TA cable through micro-usb | |
871 | * cable). Dock-Smart device support screen output of | |
872 | * target to separate monitor and mouse/keyboard for | |
873 | * desktop mode. | |
a1626298 CC |
874 | * |
875 | * Features of 'USB/TA cable with Dock-Smart device' | |
876 | * - Support MHL | |
877 | * - Support external output feature of audio | |
c2275d2f CC |
878 | * - Support charging through micro-usb port without |
879 | * data connection if TA cable is connected to target. | |
880 | * - Support charging and data connection through micro- | |
881 | * usb port if USB cable is connected between target | |
882 | * and host device | |
a1626298 CC |
883 | * - Support OTG device (Mouse/Keyboard) |
884 | */ | |
c2275d2f CC |
885 | ret = max77693_muic_set_path(info, info->path_usb, |
886 | attached); | |
a1626298 CC |
887 | if (ret < 0) |
888 | return ret; | |
889 | ||
c2275d2f CC |
890 | extcon_set_cable_state(info->edev, "Dock-Smart", |
891 | attached); | |
a1626298 CC |
892 | extcon_set_cable_state(info->edev, "MHL", attached); |
893 | ||
894 | break; | |
06bed0af | 895 | } |
39bf369e | 896 | |
a1626298 CC |
897 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
898 | switch (chg_type) { | |
899 | case MAX77693_CHARGER_TYPE_NONE: | |
900 | /* | |
c2275d2f CC |
901 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
902 | * cable is attached, muic device happen below two irq. | |
903 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting | |
904 | * MHL/Dock-Audio. | |
905 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting | |
906 | * USB/TA cable connected to MHL or Dock-Audio. | |
907 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC | |
908 | * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. | |
a1626298 | 909 | * |
c2275d2f CC |
910 | * If user attach MHL (with USB/TA cable and immediately |
911 | * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ | |
912 | * _INT2_CHGTYP irq is happened, USB/TA cable remain | |
913 | * connected state to target. But USB/TA cable isn't | |
914 | * connected to target. The user be face with unusual | |
915 | * action. So, driver should check this situation in | |
916 | * spite of, that previous charger type is N/A. | |
a1626298 | 917 | */ |
0e2738f5 | 918 | break; |
a1626298 CC |
919 | case MAX77693_CHARGER_TYPE_USB: |
920 | /* Only USB cable, PATH:AP_USB */ | |
c2275d2f CC |
921 | ret = max77693_muic_set_path(info, info->path_usb, |
922 | attached); | |
a1626298 CC |
923 | if (ret < 0) |
924 | return ret; | |
0e2738f5 | 925 | |
a1626298 CC |
926 | extcon_set_cable_state(info->edev, "USB", attached); |
927 | break; | |
928 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
929 | /* Only TA cable */ | |
930 | extcon_set_cable_state(info->edev, "TA", attached); | |
931 | break; | |
932 | } | |
db1b9037 CC |
933 | break; |
934 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
935 | extcon_set_cable_state(info->edev, | |
936 | "Charge-downstream", attached); | |
937 | break; | |
db1b9037 CC |
938 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
939 | extcon_set_cable_state(info->edev, "Slow-charger", attached); | |
940 | break; | |
941 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
942 | extcon_set_cable_state(info->edev, "Fast-charger", attached); | |
943 | break; | |
944 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
945 | break; | |
946 | default: | |
947 | dev_err(info->dev, | |
948 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
949 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 950 | return -EINVAL; |
db1b9037 CC |
951 | } |
952 | ||
a1626298 | 953 | return 0; |
db1b9037 CC |
954 | } |
955 | ||
956 | static void max77693_muic_irq_work(struct work_struct *work) | |
957 | { | |
958 | struct max77693_muic_info *info = container_of(work, | |
959 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
960 | int irq_type = -1; |
961 | int i, ret = 0; | |
db1b9037 CC |
962 | |
963 | if (!info->edev) | |
964 | return; | |
965 | ||
966 | mutex_lock(&info->mutex); | |
967 | ||
a33411b2 | 968 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
db1b9037 CC |
969 | if (info->irq == muic_irqs[i].virq) |
970 | irq_type = muic_irqs[i].irq; | |
971 | ||
d0540f91 RB |
972 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
973 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
974 | if (ret) { |
975 | dev_err(info->dev, "failed to read MUIC register\n"); | |
976 | mutex_unlock(&info->mutex); | |
977 | return; | |
978 | } | |
979 | ||
980 | switch (irq_type) { | |
981 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
982 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
983 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
984 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
985 | /* Handle all of accessory except for | |
986 | type of charger accessory */ | |
154f757f | 987 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
988 | break; |
989 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
990 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
991 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
992 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
993 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
994 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
995 | /* Handle charger accessory */ | |
154f757f | 996 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
997 | break; |
998 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
999 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
1000 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
1001 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
1002 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
1003 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
1004 | break; | |
1005 | default: | |
1006 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
1007 | irq_type); | |
19d3243e CC |
1008 | mutex_unlock(&info->mutex); |
1009 | return; | |
db1b9037 CC |
1010 | } |
1011 | ||
1012 | if (ret < 0) | |
1013 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
1014 | ||
1015 | mutex_unlock(&info->mutex); | |
1016 | ||
1017 | return; | |
1018 | } | |
1019 | ||
1020 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
1021 | { | |
1022 | struct max77693_muic_info *info = data; | |
1023 | ||
1024 | info->irq = irq; | |
1025 | schedule_work(&info->irq_work); | |
1026 | ||
1027 | return IRQ_HANDLED; | |
1028 | } | |
1029 | ||
1030 | static struct regmap_config max77693_muic_regmap_config = { | |
1031 | .reg_bits = 8, | |
1032 | .val_bits = 8, | |
1033 | }; | |
1034 | ||
1035 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
1036 | { | |
1037 | int ret = 0; | |
154f757f CC |
1038 | int adc; |
1039 | int chg_type; | |
1040 | bool attached; | |
db1b9037 CC |
1041 | |
1042 | mutex_lock(&info->mutex); | |
1043 | ||
1044 | /* Read STATUSx register to detect accessory */ | |
d0540f91 RB |
1045 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
1046 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
1047 | if (ret) { |
1048 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1049 | mutex_unlock(&info->mutex); | |
c2536543 | 1050 | return ret; |
db1b9037 CC |
1051 | } |
1052 | ||
154f757f CC |
1053 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1054 | &attached); | |
1055 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1056 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1057 | if (ret < 0) { |
154f757f | 1058 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1059 | mutex_unlock(&info->mutex); |
1060 | return ret; | |
1061 | } | |
db1b9037 CC |
1062 | } |
1063 | ||
154f757f CC |
1064 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1065 | &attached); | |
1066 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1067 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1068 | if (ret < 0) { |
154f757f | 1069 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1070 | mutex_unlock(&info->mutex); |
1071 | return ret; | |
1072 | } | |
db1b9037 CC |
1073 | } |
1074 | ||
db1b9037 | 1075 | mutex_unlock(&info->mutex); |
154f757f | 1076 | |
19d3243e | 1077 | return 0; |
db1b9037 CC |
1078 | } |
1079 | ||
297620fd CC |
1080 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1081 | { | |
1082 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1083 | struct max77693_muic_info, wq_detcable); | |
1084 | ||
1085 | max77693_muic_detect_accessory(info); | |
1086 | } | |
1087 | ||
44f34fd4 | 1088 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1089 | { |
1090 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 | 1091 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
db1b9037 | 1092 | struct max77693_muic_info *info; |
0ec83bd2 CC |
1093 | struct max77693_reg_data *init_data; |
1094 | int num_init_data; | |
297620fd CC |
1095 | int delay_jiffies; |
1096 | int ret; | |
1097 | int i; | |
d0540f91 | 1098 | unsigned int id; |
db1b9037 | 1099 | |
f4bb5cb5 SK |
1100 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1101 | GFP_KERNEL); | |
0a16ee63 | 1102 | if (!info) |
f4bb5cb5 | 1103 | return -ENOMEM; |
0a16ee63 | 1104 | |
db1b9037 CC |
1105 | info->dev = &pdev->dev; |
1106 | info->max77693 = max77693; | |
1967fa08 | 1107 | if (info->max77693->regmap_muic) { |
b186b124 | 1108 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1109 | } else { |
b186b124 CC |
1110 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
1111 | info->max77693->muic, | |
1112 | &max77693_muic_regmap_config); | |
1113 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1114 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1115 | dev_err(max77693->dev, | |
1116 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1117 | return ret; |
b186b124 | 1118 | } |
db1b9037 | 1119 | } |
39bf369e CC |
1120 | |
1121 | /* Register input device for button of dock device */ | |
eff7d74f | 1122 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1123 | if (!info->dock) { |
1124 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1125 | return -ENOMEM; | |
1126 | } | |
1127 | info->dock->name = "max77693-muic/dock"; | |
1128 | info->dock->phys = "max77693-muic/extcon"; | |
1129 | info->dock->dev.parent = &pdev->dev; | |
1130 | ||
1131 | __set_bit(EV_REP, info->dock->evbit); | |
1132 | ||
1133 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1134 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1135 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1136 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1137 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1138 | ||
1139 | ret = input_register_device(info->dock); | |
1140 | if (ret < 0) { | |
1141 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1142 | ret); | |
1143 | return ret; | |
1144 | } | |
1145 | ||
db1b9037 CC |
1146 | platform_set_drvdata(pdev, info); |
1147 | mutex_init(&info->mutex); | |
1148 | ||
1149 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); | |
1150 | ||
1151 | /* Support irq domain for MAX77693 MUIC device */ | |
1152 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1153 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
00af4b16 | 1154 | unsigned int virq = 0; |
db1b9037 | 1155 | |
342d669c RB |
1156 | virq = regmap_irq_get_virq(max77693->irq_data_muic, |
1157 | muic_irq->irq); | |
00af4b16 SK |
1158 | if (!virq) { |
1159 | ret = -EINVAL; | |
db1b9037 | 1160 | goto err_irq; |
00af4b16 | 1161 | } |
db1b9037 CC |
1162 | muic_irq->virq = virq; |
1163 | ||
1164 | ret = request_threaded_irq(virq, NULL, | |
1165 | max77693_muic_irq_handler, | |
ae3b3215 CC |
1166 | IRQF_NO_SUSPEND, |
1167 | muic_irq->name, info); | |
db1b9037 CC |
1168 | if (ret) { |
1169 | dev_err(&pdev->dev, | |
1170 | "failed: irq request (IRQ: %d," | |
1171 | " error :%d)\n", | |
1172 | muic_irq->irq, ret); | |
db1b9037 CC |
1173 | goto err_irq; |
1174 | } | |
1175 | } | |
1176 | ||
1177 | /* Initialize extcon device */ | |
577bef11 CC |
1178 | info->edev = devm_extcon_dev_allocate(&pdev->dev, |
1179 | max77693_extcon_cable); | |
1180 | if (IS_ERR(info->edev)) { | |
db1b9037 CC |
1181 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
1182 | ret = -ENOMEM; | |
1183 | goto err_irq; | |
1184 | } | |
1185 | info->edev->name = DEV_NAME; | |
577bef11 | 1186 | |
10fae118 | 1187 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
db1b9037 CC |
1188 | if (ret) { |
1189 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
f4bb5cb5 | 1190 | goto err_irq; |
db1b9037 CC |
1191 | } |
1192 | ||
0ec83bd2 | 1193 | /* Initialize MUIC register by using platform data or default data */ |
d5653f2b | 1194 | if (pdata && pdata->muic_data) { |
0ec83bd2 CC |
1195 | init_data = pdata->muic_data->init_data; |
1196 | num_init_data = pdata->muic_data->num_init_data; | |
1197 | } else { | |
1198 | init_data = default_init_data; | |
1199 | num_init_data = ARRAY_SIZE(default_init_data); | |
1200 | } | |
1201 | ||
a33411b2 | 1202 | for (i = 0; i < num_init_data; i++) { |
0ec83bd2 CC |
1203 | enum max77693_irq_source irq_src |
1204 | = MAX77693_IRQ_GROUP_NR; | |
190d7cfc | 1205 | |
d0540f91 | 1206 | regmap_write(info->max77693->regmap_muic, |
0ec83bd2 CC |
1207 | init_data[i].addr, |
1208 | init_data[i].data); | |
1209 | ||
1210 | switch (init_data[i].addr) { | |
1211 | case MAX77693_MUIC_REG_INTMASK1: | |
1212 | irq_src = MUIC_INT1; | |
1213 | break; | |
1214 | case MAX77693_MUIC_REG_INTMASK2: | |
1215 | irq_src = MUIC_INT2; | |
1216 | break; | |
1217 | case MAX77693_MUIC_REG_INTMASK3: | |
1218 | irq_src = MUIC_INT3; | |
1219 | break; | |
f8457d57 CC |
1220 | } |
1221 | ||
0ec83bd2 CC |
1222 | if (irq_src < MAX77693_IRQ_GROUP_NR) |
1223 | info->max77693->irq_masks_cur[irq_src] | |
1224 | = init_data[i].data; | |
1225 | } | |
1226 | ||
d5653f2b | 1227 | if (pdata && pdata->muic_data) { |
c2275d2f CC |
1228 | struct max77693_muic_platform_data *muic_pdata |
1229 | = pdata->muic_data; | |
0ec83bd2 | 1230 | |
190d7cfc CC |
1231 | /* |
1232 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1233 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1234 | */ | |
1235 | if (muic_pdata->path_uart) | |
1236 | info->path_uart = muic_pdata->path_uart; | |
1237 | else | |
1238 | info->path_uart = CONTROL1_SW_UART; | |
f8457d57 | 1239 | |
190d7cfc CC |
1240 | if (muic_pdata->path_usb) |
1241 | info->path_usb = muic_pdata->path_usb; | |
1242 | else | |
1243 | info->path_usb = CONTROL1_SW_USB; | |
2b75799f | 1244 | |
190d7cfc CC |
1245 | /* |
1246 | * Default delay time for detecting cable state | |
1247 | * after certain time. | |
1248 | */ | |
1249 | if (muic_pdata->detcable_delay_ms) | |
1250 | delay_jiffies = | |
1251 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1252 | else | |
1253 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1254 | } else { | |
2b75799f | 1255 | info->path_usb = CONTROL1_SW_USB; |
190d7cfc CC |
1256 | info->path_uart = CONTROL1_SW_UART; |
1257 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1258 | } | |
2b75799f CC |
1259 | |
1260 | /* Set initial path for UART */ | |
1261 | max77693_muic_set_path(info, info->path_uart, true); | |
1262 | ||
db1b9037 | 1263 | /* Check revision number of MUIC device*/ |
d0540f91 | 1264 | ret = regmap_read(info->max77693->regmap_muic, |
db1b9037 CC |
1265 | MAX77693_MUIC_REG_ID, &id); |
1266 | if (ret < 0) { | |
1267 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
10fae118 | 1268 | goto err_irq; |
db1b9037 CC |
1269 | } |
1270 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1271 | ||
1272 | /* Set ADC debounce time */ | |
1273 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1274 | ||
297620fd CC |
1275 | /* |
1276 | * Detect accessory after completing the initialization of platform | |
1277 | * | |
1278 | * - Use delayed workqueue to detect cable state and then | |
1279 | * notify cable state to notifiee/platform through uevent. | |
1280 | * After completing the booting of platform, the extcon provider | |
1281 | * driver should notify cable state to upper layer. | |
1282 | */ | |
1283 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
b8629411 KK |
1284 | queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
1285 | delay_jiffies); | |
db1b9037 CC |
1286 | |
1287 | return ret; | |
1288 | ||
db1b9037 | 1289 | err_irq: |
00af4b16 SK |
1290 | while (--i >= 0) |
1291 | free_irq(muic_irqs[i].virq, info); | |
db1b9037 CC |
1292 | return ret; |
1293 | } | |
1294 | ||
93ed0327 | 1295 | static int max77693_muic_remove(struct platform_device *pdev) |
db1b9037 CC |
1296 | { |
1297 | struct max77693_muic_info *info = platform_get_drvdata(pdev); | |
1298 | int i; | |
1299 | ||
1300 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) | |
1301 | free_irq(muic_irqs[i].virq, info); | |
1302 | cancel_work_sync(&info->irq_work); | |
39bf369e | 1303 | input_unregister_device(info->dock); |
db1b9037 CC |
1304 | |
1305 | return 0; | |
1306 | } | |
1307 | ||
1308 | static struct platform_driver max77693_muic_driver = { | |
1309 | .driver = { | |
1310 | .name = DEV_NAME, | |
1311 | .owner = THIS_MODULE, | |
1312 | }, | |
1313 | .probe = max77693_muic_probe, | |
5f7e2228 | 1314 | .remove = max77693_muic_remove, |
db1b9037 CC |
1315 | }; |
1316 | ||
1317 | module_platform_driver(max77693_muic_driver); | |
1318 | ||
1319 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1320 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1321 | MODULE_LICENSE("GPL"); | |
1322 | MODULE_ALIAS("platform:extcon-max77693"); |