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1213a366 KK |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // | |
3 | // extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC | |
4 | // | |
5 | // Copyright (C) 2012 Samsung Electrnoics | |
6 | // Chanwoo Choi <cw00.choi@samsung.com> | |
db1b9037 | 7 | |
74047eaa | 8 | #include <linux/devm-helpers.h> |
db1b9037 CC |
9 | #include <linux/kernel.h> |
10 | #include <linux/module.h> | |
11 | #include <linux/i2c.h> | |
12 | #include <linux/slab.h> | |
39bf369e | 13 | #include <linux/input.h> |
db1b9037 CC |
14 | #include <linux/interrupt.h> |
15 | #include <linux/err.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/mfd/max77693.h> | |
61b305cd | 18 | #include <linux/mfd/max77693-common.h> |
db1b9037 | 19 | #include <linux/mfd/max77693-private.h> |
176aa360 | 20 | #include <linux/extcon-provider.h> |
db1b9037 CC |
21 | #include <linux/regmap.h> |
22 | #include <linux/irqdomain.h> | |
23 | ||
24 | #define DEV_NAME "max77693-muic" | |
297620fd | 25 | #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ |
db1b9037 | 26 | |
0ec83bd2 CC |
27 | /* |
28 | * Default value of MAX77693 register to bring up MUIC device. | |
29 | * If user don't set some initial value for MUIC device through platform data, | |
30 | * extcon-max77693 driver use 'default_init_data' to bring up base operation | |
31 | * of MAX77693 MUIC device. | |
32 | */ | |
813b4516 | 33 | static struct max77693_reg_data default_init_data[] = { |
0ec83bd2 CC |
34 | { |
35 | /* STATUS2 - [3]ChgDetRun */ | |
36 | .addr = MAX77693_MUIC_REG_STATUS2, | |
cceb433a | 37 | .data = MAX77693_STATUS2_CHGDETRUN_MASK, |
0ec83bd2 CC |
38 | }, { |
39 | /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ | |
40 | .addr = MAX77693_MUIC_REG_INTMASK1, | |
41 | .data = INTMASK1_ADC1K_MASK | |
42 | | INTMASK1_ADC_MASK, | |
43 | }, { | |
44 | /* INTMASK2 - Unmask [0]ChgTypM */ | |
45 | .addr = MAX77693_MUIC_REG_INTMASK2, | |
46 | .data = INTMASK2_CHGTYP_MASK, | |
47 | }, { | |
48 | /* INTMASK3 - Mask all of interrupts */ | |
49 | .addr = MAX77693_MUIC_REG_INTMASK3, | |
50 | .data = 0x0, | |
51 | }, { | |
52 | /* CDETCTRL2 */ | |
53 | .addr = MAX77693_MUIC_REG_CDETCTRL2, | |
54 | .data = CDETCTRL2_VIDRMEN_MASK | |
55 | | CDETCTRL2_DXOVPEN_MASK, | |
56 | }, | |
57 | }; | |
58 | ||
db1b9037 CC |
59 | enum max77693_muic_adc_debounce_time { |
60 | ADC_DEBOUNCE_TIME_5MS = 0, | |
61 | ADC_DEBOUNCE_TIME_10MS, | |
62 | ADC_DEBOUNCE_TIME_25MS, | |
63 | ADC_DEBOUNCE_TIME_38_62MS, | |
64 | }; | |
65 | ||
66 | struct max77693_muic_info { | |
67 | struct device *dev; | |
68 | struct max77693_dev *max77693; | |
69 | struct extcon_dev *edev; | |
154f757f CC |
70 | int prev_cable_type; |
71 | int prev_cable_type_gnd; | |
db1b9037 | 72 | int prev_chg_type; |
39bf369e | 73 | int prev_button_type; |
db1b9037 CC |
74 | u8 status[2]; |
75 | ||
76 | int irq; | |
77 | struct work_struct irq_work; | |
78 | struct mutex mutex; | |
39bf369e | 79 | |
297620fd CC |
80 | /* |
81 | * Use delayed workqueue to detect cable state and then | |
82 | * notify cable state to notifiee/platform through uevent. | |
83 | * After completing the booting of platform, the extcon provider | |
84 | * driver should notify cable state to upper layer. | |
85 | */ | |
86 | struct delayed_work wq_detcable; | |
87 | ||
39bf369e CC |
88 | /* Button of dock device */ |
89 | struct input_dev *dock; | |
2b75799f CC |
90 | |
91 | /* | |
92 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
93 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
94 | */ | |
95 | int path_usb; | |
96 | int path_uart; | |
db1b9037 CC |
97 | }; |
98 | ||
154f757f CC |
99 | enum max77693_muic_cable_group { |
100 | MAX77693_CABLE_GROUP_ADC = 0, | |
101 | MAX77693_CABLE_GROUP_ADC_GND, | |
102 | MAX77693_CABLE_GROUP_CHG, | |
103 | MAX77693_CABLE_GROUP_VBVOLT, | |
104 | }; | |
105 | ||
db1b9037 CC |
106 | enum max77693_muic_charger_type { |
107 | MAX77693_CHARGER_TYPE_NONE = 0, | |
108 | MAX77693_CHARGER_TYPE_USB, | |
109 | MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, | |
110 | MAX77693_CHARGER_TYPE_DEDICATED_CHG, | |
111 | MAX77693_CHARGER_TYPE_APPLE_500MA, | |
112 | MAX77693_CHARGER_TYPE_APPLE_1A_2A, | |
113 | MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, | |
114 | }; | |
115 | ||
116 | /** | |
117 | * struct max77693_muic_irq | |
118 | * @irq: the index of irq list of MUIC device. | |
119 | * @name: the name of irq. | |
120 | * @virq: the virtual irq to use irq domain | |
121 | */ | |
122 | struct max77693_muic_irq { | |
123 | unsigned int irq; | |
124 | const char *name; | |
125 | unsigned int virq; | |
126 | }; | |
127 | ||
128 | static struct max77693_muic_irq muic_irqs[] = { | |
129 | { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, | |
130 | { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, | |
131 | { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, | |
132 | { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, | |
133 | { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, | |
134 | { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, | |
135 | { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, | |
136 | { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, | |
137 | { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, | |
138 | { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, | |
139 | { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, | |
140 | { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, | |
141 | { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, | |
142 | { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, | |
143 | { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, | |
144 | { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, | |
145 | }; | |
146 | ||
147 | /* Define supported accessory type */ | |
148 | enum max77693_muic_acc_type { | |
149 | MAX77693_MUIC_ADC_GROUND = 0x0, | |
150 | MAX77693_MUIC_ADC_SEND_END_BUTTON, | |
151 | MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, | |
152 | MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, | |
153 | MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, | |
154 | MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, | |
155 | MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, | |
156 | MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, | |
157 | MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, | |
158 | MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, | |
159 | MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, | |
160 | MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, | |
161 | MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, | |
162 | MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, | |
163 | MAX77693_MUIC_ADC_RESERVED_ACC_1, | |
164 | MAX77693_MUIC_ADC_RESERVED_ACC_2, | |
165 | MAX77693_MUIC_ADC_RESERVED_ACC_3, | |
166 | MAX77693_MUIC_ADC_RESERVED_ACC_4, | |
167 | MAX77693_MUIC_ADC_RESERVED_ACC_5, | |
168 | MAX77693_MUIC_ADC_CEA936_AUDIO, | |
169 | MAX77693_MUIC_ADC_PHONE_POWERED_DEV, | |
170 | MAX77693_MUIC_ADC_TTY_CONVERTER, | |
171 | MAX77693_MUIC_ADC_UART_CABLE, | |
172 | MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, | |
173 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, | |
174 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, | |
175 | MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, | |
176 | MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, | |
177 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, | |
178 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, | |
179 | MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, | |
180 | MAX77693_MUIC_ADC_OPEN, | |
181 | ||
af57fa4d SR |
182 | /* |
183 | * The below accessories have same ADC value so ADCLow and | |
184 | * ADC1K bit is used to separate specific accessory. | |
185 | */ | |
c2275d2f | 186 | /* ADC|VBVolot|ADCLow|ADC1K| */ |
4c883abe JK |
187 | MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */ |
188 | MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */ | |
c2275d2f CC |
189 | MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ |
190 | MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ | |
191 | MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ | |
db1b9037 CC |
192 | }; |
193 | ||
c2275d2f CC |
194 | /* |
195 | * MAX77693 MUIC device support below list of accessories(external connector) | |
196 | */ | |
73b6ecdb | 197 | static const unsigned int max77693_extcon_cable[] = { |
2a9de9c0 CC |
198 | EXTCON_USB, |
199 | EXTCON_USB_HOST, | |
8b45b6a0 | 200 | EXTCON_CHG_USB_SDP, |
11eecf91 CC |
201 | EXTCON_CHG_USB_DCP, |
202 | EXTCON_CHG_USB_FAST, | |
203 | EXTCON_CHG_USB_SLOW, | |
204 | EXTCON_CHG_USB_CDP, | |
205 | EXTCON_DISP_MHL, | |
2a9de9c0 CC |
206 | EXTCON_JIG, |
207 | EXTCON_DOCK, | |
208 | EXTCON_NONE, | |
db1b9037 CC |
209 | }; |
210 | ||
154f757f CC |
211 | /* |
212 | * max77693_muic_set_debounce_time - Set the debounce time of ADC | |
213 | * @info: the instance including private data of max77693 MUIC | |
214 | * @time: the debounce time of ADC | |
215 | */ | |
db1b9037 CC |
216 | static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
217 | enum max77693_muic_adc_debounce_time time) | |
218 | { | |
bf2627d6 | 219 | int ret; |
db1b9037 CC |
220 | |
221 | switch (time) { | |
222 | case ADC_DEBOUNCE_TIME_5MS: | |
223 | case ADC_DEBOUNCE_TIME_10MS: | |
224 | case ADC_DEBOUNCE_TIME_25MS: | |
225 | case ADC_DEBOUNCE_TIME_38_62MS: | |
dc6048d7 JL |
226 | /* |
227 | * Don't touch BTLDset, JIGset when you want to change adc | |
228 | * debounce time. If it writes other than 0 to BTLDset, JIGset | |
229 | * muic device will be reset and loose current state. | |
230 | */ | |
231 | ret = regmap_write(info->max77693->regmap_muic, | |
232 | MAX77693_MUIC_REG_CTRL3, | |
cceb433a | 233 | time << MAX77693_CONTROL3_ADCDBSET_SHIFT); |
19d3243e | 234 | if (ret) { |
db1b9037 | 235 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
c2536543 | 236 | return ret; |
19d3243e | 237 | } |
db1b9037 CC |
238 | break; |
239 | default: | |
240 | dev_err(info->dev, "invalid ADC debounce time\n"); | |
19d3243e | 241 | return -EINVAL; |
db1b9037 CC |
242 | } |
243 | ||
19d3243e | 244 | return 0; |
db1b9037 CC |
245 | }; |
246 | ||
154f757f CC |
247 | /* |
248 | * max77693_muic_set_path - Set hardware line according to attached cable | |
249 | * @info: the instance including private data of max77693 MUIC | |
250 | * @value: the path according to attached cable | |
251 | * @attached: the state of cable (true:attached, false:detached) | |
252 | * | |
253 | * The max77693 MUIC device share outside H/W line among a varity of cables | |
254 | * so, this function set internal path of H/W line according to the type of | |
255 | * attached cable. | |
256 | */ | |
db1b9037 CC |
257 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
258 | u8 val, bool attached) | |
259 | { | |
2d18baf6 | 260 | int ret; |
d0540f91 | 261 | unsigned int ctrl1, ctrl2 = 0; |
db1b9037 CC |
262 | |
263 | if (attached) | |
264 | ctrl1 = val; | |
265 | else | |
cceb433a | 266 | ctrl1 = MAX77693_CONTROL1_SW_OPEN; |
db1b9037 | 267 | |
d0540f91 RB |
268 | ret = regmap_update_bits(info->max77693->regmap_muic, |
269 | MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); | |
db1b9037 CC |
270 | if (ret < 0) { |
271 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 272 | return ret; |
db1b9037 CC |
273 | } |
274 | ||
275 | if (attached) | |
cceb433a | 276 | ctrl2 |= MAX77693_CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ |
db1b9037 | 277 | else |
cceb433a | 278 | ctrl2 |= MAX77693_CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ |
db1b9037 | 279 | |
d0540f91 RB |
280 | ret = regmap_update_bits(info->max77693->regmap_muic, |
281 | MAX77693_MUIC_REG_CTRL2, | |
cceb433a KK |
282 | MAX77693_CONTROL2_LOWPWR_MASK | MAX77693_CONTROL2_CPEN_MASK, |
283 | ctrl2); | |
db1b9037 CC |
284 | if (ret < 0) { |
285 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 286 | return ret; |
db1b9037 CC |
287 | } |
288 | ||
289 | dev_info(info->dev, | |
290 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
291 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
292 | |
293 | return 0; | |
db1b9037 CC |
294 | } |
295 | ||
154f757f CC |
296 | /* |
297 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
298 | * @info: the instance including private data of max77693 MUIC | |
299 | * @group: the path according to attached cable | |
300 | * @attached: store cable state and return | |
301 | * | |
302 | * This function check the cable state either attached or detached, | |
303 | * and then divide precise type of cable according to cable group. | |
304 | * - MAX77693_CABLE_GROUP_ADC | |
305 | * - MAX77693_CABLE_GROUP_ADC_GND | |
306 | * - MAX77693_CABLE_GROUP_CHG | |
307 | * - MAX77693_CABLE_GROUP_VBVOLT | |
308 | */ | |
309 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
310 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 311 | { |
154f757f CC |
312 | int cable_type = 0; |
313 | int adc; | |
314 | int adc1k; | |
315 | int adclow; | |
316 | int vbvolt; | |
317 | int chg_type; | |
318 | ||
319 | switch (group) { | |
320 | case MAX77693_CABLE_GROUP_ADC: | |
321 | /* | |
322 | * Read ADC value to check cable type and decide cable state | |
323 | * according to cable type | |
324 | */ | |
cceb433a KK |
325 | adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; |
326 | adc >>= MAX77693_STATUS1_ADC_SHIFT; | |
154f757f CC |
327 | |
328 | /* | |
329 | * Check current cable state/cable type and store cable type | |
330 | * (info->prev_cable_type) for handling cable when cable is | |
331 | * detached. | |
332 | */ | |
333 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
334 | *attached = false; | |
335 | ||
336 | cable_type = info->prev_cable_type; | |
337 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
338 | } else { | |
339 | *attached = true; | |
340 | ||
341 | cable_type = info->prev_cable_type = adc; | |
342 | } | |
343 | break; | |
344 | case MAX77693_CABLE_GROUP_ADC_GND: | |
345 | /* | |
346 | * Read ADC value to check cable type and decide cable state | |
347 | * according to cable type | |
348 | */ | |
cceb433a KK |
349 | adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; |
350 | adc >>= MAX77693_STATUS1_ADC_SHIFT; | |
db1b9037 | 351 | |
154f757f CC |
352 | /* |
353 | * Check current cable state/cable type and store cable type | |
354 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
355 | * is detached. | |
356 | */ | |
357 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
358 | *attached = false; | |
359 | ||
360 | cable_type = info->prev_cable_type_gnd; | |
361 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
362 | } else { | |
363 | *attached = true; | |
364 | ||
cceb433a KK |
365 | adclow = info->status[0] & MAX77693_STATUS1_ADCLOW_MASK; |
366 | adclow >>= MAX77693_STATUS1_ADCLOW_SHIFT; | |
367 | adc1k = info->status[0] & MAX77693_STATUS1_ADC1K_MASK; | |
368 | adc1k >>= MAX77693_STATUS1_ADC1K_SHIFT; | |
154f757f | 369 | |
cceb433a KK |
370 | vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK; |
371 | vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT; | |
154f757f CC |
372 | |
373 | /** | |
c2275d2f | 374 | * [0x1|VBVolt|ADCLow|ADC1K] |
4c883abe JK |
375 | * [0x1| 0| 0| 0] USB_HOST |
376 | * [0x1| 1| 0| 0] USB_HSOT_VB | |
c2275d2f CC |
377 | * [0x1| 0| 1| 0] Audio Video cable with load |
378 | * [0x1| 0| 1| 1] MHL without charging cable | |
379 | * [0x1| 1| 1| 1] MHL with charging cable | |
154f757f CC |
380 | */ |
381 | cable_type = ((0x1 << 8) | |
382 | | (vbvolt << 2) | |
383 | | (adclow << 1) | |
384 | | adc1k); | |
385 | ||
386 | info->prev_cable_type = adc; | |
387 | info->prev_cable_type_gnd = cable_type; | |
388 | } | |
389 | ||
390 | break; | |
391 | case MAX77693_CABLE_GROUP_CHG: | |
392 | /* | |
393 | * Read charger type to check cable type and decide cable state | |
394 | * according to type of charger cable. | |
395 | */ | |
cceb433a KK |
396 | chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK; |
397 | chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT; | |
154f757f CC |
398 | |
399 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
400 | *attached = false; | |
401 | ||
402 | cable_type = info->prev_chg_type; | |
403 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
404 | } else { | |
405 | *attached = true; | |
406 | ||
407 | /* | |
408 | * Check current cable state/cable type and store cable | |
409 | * type(info->prev_chg_type) for handling cable when | |
410 | * charger cable is detached. | |
411 | */ | |
412 | cable_type = info->prev_chg_type = chg_type; | |
413 | } | |
414 | ||
415 | break; | |
416 | case MAX77693_CABLE_GROUP_VBVOLT: | |
417 | /* | |
418 | * Read ADC value to check cable type and decide cable state | |
419 | * according to cable type | |
420 | */ | |
cceb433a KK |
421 | adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; |
422 | adc >>= MAX77693_STATUS1_ADC_SHIFT; | |
423 | chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK; | |
424 | chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT; | |
154f757f CC |
425 | |
426 | if (adc == MAX77693_MUIC_ADC_OPEN | |
427 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
428 | *attached = false; | |
429 | else | |
430 | *attached = true; | |
431 | ||
432 | /* | |
433 | * Read vbvolt field, if vbvolt is 1, | |
434 | * this cable is used for charging. | |
db1b9037 | 435 | */ |
cceb433a KK |
436 | vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK; |
437 | vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT; | |
154f757f CC |
438 | |
439 | cable_type = vbvolt; | |
440 | break; | |
441 | default: | |
442 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
443 | cable_type = -EINVAL; | |
444 | break; | |
445 | } | |
446 | ||
447 | return cable_type; | |
448 | } | |
449 | ||
39bf369e CC |
450 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
451 | int cable_type, bool attached) | |
452 | { | |
453 | int ret = 0; | |
a1626298 CC |
454 | int vbvolt; |
455 | bool cable_attached; | |
73b6ecdb | 456 | unsigned int dock_id; |
39bf369e CC |
457 | |
458 | dev_info(info->dev, | |
459 | "external connector is %s (adc:0x%02x)\n", | |
460 | attached ? "attached" : "detached", cable_type); | |
461 | ||
462 | switch (cable_type) { | |
463 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
464 | /* |
465 | * Check power cable whether attached or detached state. | |
466 | * The Dock-Smart device need surely external power supply. | |
467 | * If power cable(USB/TA) isn't connected to Dock device, | |
468 | * user can't use Dock-Smart for desktop mode. | |
469 | */ | |
470 | vbvolt = max77693_muic_get_cable_type(info, | |
471 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
472 | if (attached && !vbvolt) { | |
473 | dev_warn(info->dev, | |
474 | "Cannot detect external power supply\n"); | |
475 | return 0; | |
476 | } | |
477 | ||
478 | /* | |
d519c423 CC |
479 | * Notify Dock/MHL state. |
480 | * - Dock device include three type of cable which | |
a1626298 | 481 | * are HDMI, USB for mouse/keyboard and micro-usb port |
d519c423 CC |
482 | * for USB/TA cable. Dock device need always exteranl |
483 | * power supply(USB/TA cable through micro-usb cable). Dock | |
484 | * device support screen output of target to separate | |
a1626298 CC |
485 | * monitor and mouse/keyboard for desktop mode. |
486 | * | |
d519c423 | 487 | * Features of 'USB/TA cable with Dock device' |
a1626298 CC |
488 | * - Support MHL |
489 | * - Support external output feature of audio | |
490 | * - Support charging through micro-usb port without data | |
491 | * connection if TA cable is connected to target. | |
492 | * - Support charging and data connection through micro-usb port | |
493 | * if USB cable is connected between target and host | |
494 | * device. | |
4c883abe | 495 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 CC |
496 | */ |
497 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 498 | if (ret < 0) |
a1626298 | 499 | return ret; |
39bf369e | 500 | |
8670b459 CC |
501 | extcon_set_state_sync(info->edev, EXTCON_DOCK, attached); |
502 | extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached); | |
39bf369e | 503 | goto out; |
39bf369e | 504 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
2a9de9c0 | 505 | dock_id = EXTCON_DOCK; |
39bf369e CC |
506 | break; |
507 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
2a9de9c0 | 508 | dock_id = EXTCON_DOCK; |
8b45b6a0 | 509 | if (!attached) { |
8670b459 CC |
510 | extcon_set_state_sync(info->edev, EXTCON_USB, false); |
511 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, | |
8b45b6a0 CC |
512 | false); |
513 | } | |
39bf369e | 514 | break; |
19d3243e CC |
515 | default: |
516 | dev_err(info->dev, "failed to detect %s dock device\n", | |
517 | attached ? "attached" : "detached"); | |
518 | return -EINVAL; | |
39bf369e CC |
519 | } |
520 | ||
521 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
cceb433a KK |
522 | ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO, |
523 | attached); | |
39bf369e | 524 | if (ret < 0) |
a1626298 | 525 | return ret; |
8670b459 | 526 | extcon_set_state_sync(info->edev, dock_id, attached); |
39bf369e CC |
527 | |
528 | out: | |
a1626298 | 529 | return 0; |
39bf369e CC |
530 | } |
531 | ||
532 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
533 | int button_type, bool attached) | |
534 | { | |
535 | struct input_dev *dock = info->dock; | |
536 | unsigned int code; | |
39bf369e CC |
537 | |
538 | switch (button_type) { | |
539 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
540 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
541 | /* DOCK_KEY_PREV */ | |
542 | code = KEY_PREVIOUSSONG; | |
543 | break; | |
544 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
545 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
546 | /* DOCK_KEY_NEXT */ | |
547 | code = KEY_NEXTSONG; | |
548 | break; | |
549 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
550 | /* DOCK_VOL_DOWN */ | |
551 | code = KEY_VOLUMEDOWN; | |
552 | break; | |
553 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
554 | /* DOCK_VOL_UP */ | |
555 | code = KEY_VOLUMEUP; | |
556 | break; | |
557 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
558 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
559 | /* DOCK_KEY_PLAY_PAUSE */ | |
560 | code = KEY_PLAYPAUSE; | |
561 | break; | |
562 | default: | |
563 | dev_err(info->dev, | |
564 | "failed to detect %s key (adc:0x%x)\n", | |
565 | attached ? "pressed" : "released", button_type); | |
19d3243e | 566 | return -EINVAL; |
39bf369e CC |
567 | } |
568 | ||
569 | input_event(dock, EV_KEY, code, attached); | |
570 | input_sync(dock); | |
571 | ||
39bf369e CC |
572 | return 0; |
573 | } | |
574 | ||
154f757f CC |
575 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
576 | { | |
577 | int cable_type_gnd; | |
578 | int ret = 0; | |
579 | bool attached; | |
db1b9037 | 580 | |
154f757f CC |
581 | cable_type_gnd = max77693_muic_get_cable_type(info, |
582 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 583 | |
154f757f | 584 | switch (cable_type_gnd) { |
4c883abe JK |
585 | case MAX77693_MUIC_GND_USB_HOST: |
586 | case MAX77693_MUIC_GND_USB_HOST_VB: | |
587 | /* USB_HOST, PATH: AP_USB */ | |
cceb433a KK |
588 | ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_USB, |
589 | attached); | |
db1b9037 | 590 | if (ret < 0) |
19d3243e | 591 | return ret; |
8670b459 | 592 | extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached); |
db1b9037 CC |
593 | break; |
594 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 595 | /* Audio Video Cable with load, PATH:AUDIO */ |
cceb433a KK |
596 | ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO, |
597 | attached); | |
db1b9037 | 598 | if (ret < 0) |
19d3243e | 599 | return ret; |
8670b459 CC |
600 | extcon_set_state_sync(info->edev, EXTCON_USB, attached); |
601 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, | |
8b45b6a0 | 602 | attached); |
db1b9037 | 603 | break; |
06bed0af CC |
604 | case MAX77693_MUIC_GND_MHL: |
605 | case MAX77693_MUIC_GND_MHL_VB: | |
606 | /* MHL or MHL with USB/TA cable */ | |
8670b459 | 607 | extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached); |
db1b9037 CC |
608 | break; |
609 | default: | |
19d3243e | 610 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 611 | attached ? "attached" : "detached"); |
19d3243e | 612 | return -EINVAL; |
db1b9037 CC |
613 | } |
614 | ||
19d3243e | 615 | return 0; |
db1b9037 CC |
616 | } |
617 | ||
d0587eb7 CC |
618 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
619 | int cable_type, bool attached) | |
620 | { | |
d0587eb7 | 621 | int ret = 0; |
cceb433a | 622 | u8 path = MAX77693_CONTROL1_SW_OPEN; |
d0587eb7 CC |
623 | |
624 | dev_info(info->dev, | |
625 | "external connector is %s (adc:0x%02x)\n", | |
626 | attached ? "attached" : "detached", cable_type); | |
627 | ||
628 | switch (cable_type) { | |
629 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
d0587eb7 CC |
630 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ |
631 | /* PATH:AP_USB */ | |
cceb433a | 632 | path = MAX77693_CONTROL1_SW_USB; |
d0587eb7 CC |
633 | break; |
634 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
c22159a2 KK |
635 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */ |
636 | /* PATH:AP_UART */ | |
cceb433a | 637 | path = MAX77693_CONTROL1_SW_UART; |
c22159a2 | 638 | break; |
19d3243e CC |
639 | default: |
640 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
641 | attached ? "attached" : "detached"); | |
642 | return -EINVAL; | |
d0587eb7 CC |
643 | } |
644 | ||
645 | ret = max77693_muic_set_path(info, path, attached); | |
646 | if (ret < 0) | |
19d3243e | 647 | return ret; |
d0587eb7 | 648 | |
8670b459 | 649 | extcon_set_state_sync(info->edev, EXTCON_JIG, attached); |
19d3243e CC |
650 | |
651 | return 0; | |
d0587eb7 CC |
652 | } |
653 | ||
154f757f | 654 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 655 | { |
154f757f | 656 | int cable_type; |
39bf369e | 657 | int button_type; |
154f757f | 658 | bool attached; |
db1b9037 | 659 | int ret = 0; |
db1b9037 | 660 | |
154f757f CC |
661 | /* Check accessory state which is either detached or attached */ |
662 | cable_type = max77693_muic_get_cable_type(info, | |
663 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
664 | |
665 | dev_info(info->dev, | |
666 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
667 | attached ? "attached" : "detached", cable_type, |
668 | info->prev_cable_type); | |
db1b9037 | 669 | |
154f757f | 670 | switch (cable_type) { |
db1b9037 | 671 | case MAX77693_MUIC_ADC_GROUND: |
4c883abe | 672 | /* USB_HOST/MHL/Audio */ |
154f757f | 673 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
674 | break; |
675 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
676 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 677 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
c22159a2 | 678 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: |
db1b9037 | 679 | /* JIG */ |
d0587eb7 | 680 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 681 | if (ret < 0) |
19d3243e | 682 | return ret; |
db1b9037 | 683 | break; |
39bf369e | 684 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
39bf369e CC |
685 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
686 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
687 | /* | |
688 | * DOCK device | |
689 | * | |
690 | * The MAX77693 MUIC device can detect total 34 cable type | |
691 | * except of charger cable and MUIC device didn't define | |
692 | * specfic role of cable in the range of from 0x01 to 0x12 | |
693 | * of ADC value. So, can use/define cable with no role according | |
694 | * to schema of hardware board. | |
695 | */ | |
696 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
697 | if (ret < 0) | |
19d3243e | 698 | return ret; |
39bf369e | 699 | break; |
c2275d2f CC |
700 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
701 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
702 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
703 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
704 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
39bf369e CC |
705 | /* |
706 | * Button of DOCK device | |
707 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
708 | * | |
709 | * The MAX77693 MUIC device can detect total 34 cable type | |
710 | * except of charger cable and MUIC device didn't define | |
711 | * specfic role of cable in the range of from 0x01 to 0x12 | |
712 | * of ADC value. So, can use/define cable with no role according | |
713 | * to schema of hardware board. | |
714 | */ | |
715 | if (attached) | |
716 | button_type = info->prev_button_type = cable_type; | |
717 | else | |
718 | button_type = info->prev_button_type; | |
719 | ||
720 | ret = max77693_muic_dock_button_handler(info, button_type, | |
721 | attached); | |
db1b9037 | 722 | if (ret < 0) |
19d3243e | 723 | return ret; |
db1b9037 CC |
724 | break; |
725 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
726 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
727 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
728 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
729 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
730 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 731 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 732 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
733 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
734 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
735 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
736 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
737 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
738 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
739 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
740 | case MAX77693_MUIC_ADC_UART_CABLE: | |
741 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 742 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
743 | /* |
744 | * This accessory isn't used in general case if it is specially | |
745 | * needed to detect additional accessory, should implement | |
746 | * proper operation when this accessory is attached/detached. | |
747 | */ | |
db1b9037 CC |
748 | dev_info(info->dev, |
749 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 750 | attached ? "attached" : "detached", cable_type); |
19d3243e | 751 | return -EAGAIN; |
db1b9037 CC |
752 | default: |
753 | dev_err(info->dev, | |
754 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 755 | attached ? "attached" : "detached", cable_type); |
19d3243e | 756 | return -EINVAL; |
db1b9037 CC |
757 | } |
758 | ||
19d3243e | 759 | return 0; |
db1b9037 CC |
760 | } |
761 | ||
154f757f | 762 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 763 | { |
db1b9037 | 764 | int chg_type; |
06bed0af | 765 | int cable_type_gnd; |
39bf369e | 766 | int cable_type; |
154f757f | 767 | bool attached; |
06bed0af | 768 | bool cable_attached; |
154f757f | 769 | int ret = 0; |
db1b9037 | 770 | |
154f757f CC |
771 | chg_type = max77693_muic_get_cable_type(info, |
772 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
773 | |
774 | dev_info(info->dev, | |
775 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
776 | attached ? "attached" : "detached", | |
154f757f | 777 | chg_type, info->prev_chg_type); |
db1b9037 CC |
778 | |
779 | switch (chg_type) { | |
780 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 781 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 782 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 783 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
784 | cable_type_gnd = max77693_muic_get_cable_type(info, |
785 | MAX77693_CABLE_GROUP_ADC_GND, | |
786 | &cable_attached); | |
a1626298 CC |
787 | switch (cable_type_gnd) { |
788 | case MAX77693_MUIC_GND_MHL: | |
789 | case MAX77693_MUIC_GND_MHL_VB: | |
790 | /* | |
942e0239 | 791 | * MHL cable with USB/TA cable |
c2275d2f CC |
792 | * - MHL cable include two port(HDMI line and separate |
793 | * micro-usb port. When the target connect MHL cable, | |
942e0239 CC |
794 | * extcon driver check whether USB/TA cable is |
795 | * connected. If USB/TA cable is connected, extcon | |
c2275d2f | 796 | * driver notify state to notifiee for charging battery. |
a1626298 | 797 | * |
942e0239 | 798 | * Features of 'USB/TA with MHL cable' |
a1626298 | 799 | * - Support MHL |
c2275d2f CC |
800 | * - Support charging through micro-usb port without |
801 | * data connection | |
a1626298 | 802 | */ |
8670b459 | 803 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, |
11eecf91 | 804 | attached); |
4243c408 MP |
805 | extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, |
806 | cable_attached); | |
a1626298 | 807 | break; |
39bf369e CC |
808 | } |
809 | ||
a1626298 | 810 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
811 | cable_type = max77693_muic_get_cable_type(info, |
812 | MAX77693_CABLE_GROUP_ADC, | |
813 | &cable_attached); | |
a1626298 CC |
814 | switch (cable_type) { |
815 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
816 | /* | |
817 | * Dock-Audio device with USB/TA cable | |
c2275d2f CC |
818 | * - Dock device include two port(Dock-Audio and micro- |
819 | * usb port). When the target connect Dock-Audio device, | |
820 | * extcon driver check whether USB/TA cable is connected | |
821 | * or not. If USB/TA cable is connected, extcon driver | |
822 | * notify state to notifiee for charging battery. | |
a1626298 CC |
823 | * |
824 | * Features of 'USB/TA cable with Dock-Audio device' | |
825 | * - Support external output feature of audio. | |
c2275d2f CC |
826 | * - Support charging through micro-usb port without |
827 | * data connection. | |
a1626298 | 828 | */ |
8670b459 | 829 | extcon_set_state_sync(info->edev, EXTCON_USB, |
2a9de9c0 | 830 | attached); |
8670b459 | 831 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, |
8b45b6a0 | 832 | attached); |
39bf369e CC |
833 | |
834 | if (!cable_attached) | |
8670b459 | 835 | extcon_set_state_sync(info->edev, EXTCON_DOCK, |
2a9de9c0 | 836 | cable_attached); |
a1626298 CC |
837 | break; |
838 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
839 | /* | |
840 | * Dock-Smart device with USB/TA cable | |
841 | * - Dock-Desk device include three type of cable which | |
842 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
c2275d2f CC |
843 | * for USB/TA cable. Dock-Smart device need always |
844 | * exteranl power supply(USB/TA cable through micro-usb | |
845 | * cable). Dock-Smart device support screen output of | |
846 | * target to separate monitor and mouse/keyboard for | |
847 | * desktop mode. | |
a1626298 CC |
848 | * |
849 | * Features of 'USB/TA cable with Dock-Smart device' | |
850 | * - Support MHL | |
851 | * - Support external output feature of audio | |
c2275d2f CC |
852 | * - Support charging through micro-usb port without |
853 | * data connection if TA cable is connected to target. | |
854 | * - Support charging and data connection through micro- | |
855 | * usb port if USB cable is connected between target | |
856 | * and host device | |
4c883abe | 857 | * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
a1626298 | 858 | */ |
c2275d2f CC |
859 | ret = max77693_muic_set_path(info, info->path_usb, |
860 | attached); | |
a1626298 CC |
861 | if (ret < 0) |
862 | return ret; | |
863 | ||
8670b459 | 864 | extcon_set_state_sync(info->edev, EXTCON_DOCK, |
2a9de9c0 | 865 | attached); |
8670b459 | 866 | extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, |
2a9de9c0 | 867 | attached); |
a1626298 | 868 | break; |
06bed0af | 869 | } |
39bf369e | 870 | |
a1626298 CC |
871 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
872 | switch (chg_type) { | |
873 | case MAX77693_CHARGER_TYPE_NONE: | |
874 | /* | |
c2275d2f CC |
875 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
876 | * cable is attached, muic device happen below two irq. | |
877 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting | |
878 | * MHL/Dock-Audio. | |
879 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting | |
880 | * USB/TA cable connected to MHL or Dock-Audio. | |
881 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC | |
882 | * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. | |
a1626298 | 883 | * |
c2275d2f CC |
884 | * If user attach MHL (with USB/TA cable and immediately |
885 | * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ | |
886 | * _INT2_CHGTYP irq is happened, USB/TA cable remain | |
887 | * connected state to target. But USB/TA cable isn't | |
888 | * connected to target. The user be face with unusual | |
889 | * action. So, driver should check this situation in | |
890 | * spite of, that previous charger type is N/A. | |
a1626298 | 891 | */ |
0e2738f5 | 892 | break; |
a1626298 CC |
893 | case MAX77693_CHARGER_TYPE_USB: |
894 | /* Only USB cable, PATH:AP_USB */ | |
c2275d2f CC |
895 | ret = max77693_muic_set_path(info, info->path_usb, |
896 | attached); | |
a1626298 CC |
897 | if (ret < 0) |
898 | return ret; | |
0e2738f5 | 899 | |
8670b459 | 900 | extcon_set_state_sync(info->edev, EXTCON_USB, |
2a9de9c0 | 901 | attached); |
8670b459 | 902 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, |
8b45b6a0 | 903 | attached); |
a1626298 CC |
904 | break; |
905 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
906 | /* Only TA cable */ | |
8670b459 | 907 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, |
11eecf91 | 908 | attached); |
a1626298 CC |
909 | break; |
910 | } | |
db1b9037 CC |
911 | break; |
912 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
8670b459 | 913 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP, |
2a9de9c0 | 914 | attached); |
db1b9037 | 915 | break; |
db1b9037 | 916 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
8670b459 | 917 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW, |
2a9de9c0 | 918 | attached); |
db1b9037 CC |
919 | break; |
920 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
8670b459 | 921 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST, |
2a9de9c0 | 922 | attached); |
db1b9037 CC |
923 | break; |
924 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
925 | break; | |
926 | default: | |
927 | dev_err(info->dev, | |
928 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
929 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 930 | return -EINVAL; |
db1b9037 CC |
931 | } |
932 | ||
a1626298 | 933 | return 0; |
db1b9037 CC |
934 | } |
935 | ||
936 | static void max77693_muic_irq_work(struct work_struct *work) | |
937 | { | |
938 | struct max77693_muic_info *info = container_of(work, | |
939 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
940 | int irq_type = -1; |
941 | int i, ret = 0; | |
db1b9037 CC |
942 | |
943 | if (!info->edev) | |
944 | return; | |
945 | ||
946 | mutex_lock(&info->mutex); | |
947 | ||
a33411b2 | 948 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
db1b9037 CC |
949 | if (info->irq == muic_irqs[i].virq) |
950 | irq_type = muic_irqs[i].irq; | |
951 | ||
d0540f91 RB |
952 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
953 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
954 | if (ret) { |
955 | dev_err(info->dev, "failed to read MUIC register\n"); | |
956 | mutex_unlock(&info->mutex); | |
957 | return; | |
958 | } | |
959 | ||
960 | switch (irq_type) { | |
961 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
962 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
963 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
964 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
af57fa4d SR |
965 | /* |
966 | * Handle all of accessory except for | |
967 | * type of charger accessory. | |
968 | */ | |
154f757f | 969 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
970 | break; |
971 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
972 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
973 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
974 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
975 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
976 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
977 | /* Handle charger accessory */ | |
154f757f | 978 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
979 | break; |
980 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
981 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
982 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
983 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
984 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
985 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
986 | break; | |
987 | default: | |
988 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
989 | irq_type); | |
19d3243e CC |
990 | mutex_unlock(&info->mutex); |
991 | return; | |
db1b9037 CC |
992 | } |
993 | ||
994 | if (ret < 0) | |
995 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
996 | ||
997 | mutex_unlock(&info->mutex); | |
db1b9037 CC |
998 | } |
999 | ||
1000 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
1001 | { | |
1002 | struct max77693_muic_info *info = data; | |
1003 | ||
1004 | info->irq = irq; | |
1005 | schedule_work(&info->irq_work); | |
1006 | ||
1007 | return IRQ_HANDLED; | |
1008 | } | |
1009 | ||
65948900 | 1010 | static const struct regmap_config max77693_muic_regmap_config = { |
db1b9037 CC |
1011 | .reg_bits = 8, |
1012 | .val_bits = 8, | |
1013 | }; | |
1014 | ||
1015 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
1016 | { | |
1017 | int ret = 0; | |
154f757f CC |
1018 | int adc; |
1019 | int chg_type; | |
1020 | bool attached; | |
db1b9037 CC |
1021 | |
1022 | mutex_lock(&info->mutex); | |
1023 | ||
1024 | /* Read STATUSx register to detect accessory */ | |
d0540f91 RB |
1025 | ret = regmap_bulk_read(info->max77693->regmap_muic, |
1026 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
db1b9037 CC |
1027 | if (ret) { |
1028 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1029 | mutex_unlock(&info->mutex); | |
c2536543 | 1030 | return ret; |
db1b9037 CC |
1031 | } |
1032 | ||
154f757f CC |
1033 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1034 | &attached); | |
1035 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1036 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1037 | if (ret < 0) { |
154f757f | 1038 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1039 | mutex_unlock(&info->mutex); |
1040 | return ret; | |
1041 | } | |
db1b9037 CC |
1042 | } |
1043 | ||
154f757f CC |
1044 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1045 | &attached); | |
1046 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1047 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1048 | if (ret < 0) { |
154f757f | 1049 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1050 | mutex_unlock(&info->mutex); |
1051 | return ret; | |
1052 | } | |
db1b9037 CC |
1053 | } |
1054 | ||
db1b9037 | 1055 | mutex_unlock(&info->mutex); |
154f757f | 1056 | |
19d3243e | 1057 | return 0; |
db1b9037 CC |
1058 | } |
1059 | ||
297620fd CC |
1060 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1061 | { | |
1062 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1063 | struct max77693_muic_info, wq_detcable); | |
1064 | ||
1065 | max77693_muic_detect_accessory(info); | |
1066 | } | |
1067 | ||
44f34fd4 | 1068 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1069 | { |
1070 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 | 1071 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
db1b9037 | 1072 | struct max77693_muic_info *info; |
0ec83bd2 CC |
1073 | struct max77693_reg_data *init_data; |
1074 | int num_init_data; | |
297620fd | 1075 | int delay_jiffies; |
6865f2ef MS |
1076 | int cable_type; |
1077 | bool attached; | |
297620fd CC |
1078 | int ret; |
1079 | int i; | |
d0540f91 | 1080 | unsigned int id; |
db1b9037 | 1081 | |
f4bb5cb5 SK |
1082 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1083 | GFP_KERNEL); | |
0a16ee63 | 1084 | if (!info) |
f4bb5cb5 | 1085 | return -ENOMEM; |
0a16ee63 | 1086 | |
db1b9037 CC |
1087 | info->dev = &pdev->dev; |
1088 | info->max77693 = max77693; | |
1967fa08 | 1089 | if (info->max77693->regmap_muic) { |
b186b124 | 1090 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1091 | } else { |
b186b124 | 1092 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
61b305cd | 1093 | info->max77693->i2c_muic, |
b186b124 CC |
1094 | &max77693_muic_regmap_config); |
1095 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1096 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1097 | dev_err(max77693->dev, | |
1098 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1099 | return ret; |
b186b124 | 1100 | } |
db1b9037 | 1101 | } |
39bf369e CC |
1102 | |
1103 | /* Register input device for button of dock device */ | |
eff7d74f | 1104 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1105 | if (!info->dock) { |
1106 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1107 | return -ENOMEM; | |
1108 | } | |
1109 | info->dock->name = "max77693-muic/dock"; | |
1110 | info->dock->phys = "max77693-muic/extcon"; | |
1111 | info->dock->dev.parent = &pdev->dev; | |
1112 | ||
1113 | __set_bit(EV_REP, info->dock->evbit); | |
1114 | ||
1115 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1116 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1117 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1118 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1119 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1120 | ||
1121 | ret = input_register_device(info->dock); | |
1122 | if (ret < 0) { | |
1123 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1124 | ret); | |
1125 | return ret; | |
1126 | } | |
1127 | ||
db1b9037 CC |
1128 | platform_set_drvdata(pdev, info); |
1129 | mutex_init(&info->mutex); | |
1130 | ||
74047eaa MV |
1131 | ret = devm_work_autocancel(&pdev->dev, &info->irq_work, |
1132 | max77693_muic_irq_work); | |
1133 | if (ret) | |
1134 | return ret; | |
db1b9037 CC |
1135 | |
1136 | /* Support irq domain for MAX77693 MUIC device */ | |
1137 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1138 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
cbc46603 | 1139 | int virq; |
db1b9037 | 1140 | |
342d669c RB |
1141 | virq = regmap_irq_get_virq(max77693->irq_data_muic, |
1142 | muic_irq->irq); | |
cbc46603 | 1143 | if (virq <= 0) |
d7155231 | 1144 | return -EINVAL; |
db1b9037 CC |
1145 | muic_irq->virq = virq; |
1146 | ||
d7155231 | 1147 | ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, |
db1b9037 | 1148 | max77693_muic_irq_handler, |
ae3b3215 CC |
1149 | IRQF_NO_SUSPEND, |
1150 | muic_irq->name, info); | |
db1b9037 CC |
1151 | if (ret) { |
1152 | dev_err(&pdev->dev, | |
34825e51 | 1153 | "failed: irq request (IRQ: %d, error :%d)\n", |
db1b9037 | 1154 | muic_irq->irq, ret); |
d7155231 | 1155 | return ret; |
db1b9037 CC |
1156 | } |
1157 | } | |
1158 | ||
1159 | /* Initialize extcon device */ | |
577bef11 CC |
1160 | info->edev = devm_extcon_dev_allocate(&pdev->dev, |
1161 | max77693_extcon_cable); | |
1162 | if (IS_ERR(info->edev)) { | |
db1b9037 | 1163 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
1f339f33 | 1164 | return PTR_ERR(info->edev); |
db1b9037 | 1165 | } |
577bef11 | 1166 | |
10fae118 | 1167 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
db1b9037 CC |
1168 | if (ret) { |
1169 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
d7155231 | 1170 | return ret; |
db1b9037 CC |
1171 | } |
1172 | ||
0ec83bd2 | 1173 | /* Initialize MUIC register by using platform data or default data */ |
d5653f2b | 1174 | if (pdata && pdata->muic_data) { |
0ec83bd2 CC |
1175 | init_data = pdata->muic_data->init_data; |
1176 | num_init_data = pdata->muic_data->num_init_data; | |
1177 | } else { | |
1178 | init_data = default_init_data; | |
1179 | num_init_data = ARRAY_SIZE(default_init_data); | |
1180 | } | |
1181 | ||
a33411b2 | 1182 | for (i = 0; i < num_init_data; i++) { |
d0540f91 | 1183 | regmap_write(info->max77693->regmap_muic, |
0ec83bd2 CC |
1184 | init_data[i].addr, |
1185 | init_data[i].data); | |
0ec83bd2 CC |
1186 | } |
1187 | ||
d5653f2b | 1188 | if (pdata && pdata->muic_data) { |
c2275d2f CC |
1189 | struct max77693_muic_platform_data *muic_pdata |
1190 | = pdata->muic_data; | |
0ec83bd2 | 1191 | |
190d7cfc CC |
1192 | /* |
1193 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1194 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1195 | */ | |
1196 | if (muic_pdata->path_uart) | |
1197 | info->path_uart = muic_pdata->path_uart; | |
1198 | else | |
cceb433a | 1199 | info->path_uart = MAX77693_CONTROL1_SW_UART; |
f8457d57 | 1200 | |
190d7cfc CC |
1201 | if (muic_pdata->path_usb) |
1202 | info->path_usb = muic_pdata->path_usb; | |
1203 | else | |
cceb433a | 1204 | info->path_usb = MAX77693_CONTROL1_SW_USB; |
2b75799f | 1205 | |
190d7cfc CC |
1206 | /* |
1207 | * Default delay time for detecting cable state | |
1208 | * after certain time. | |
1209 | */ | |
1210 | if (muic_pdata->detcable_delay_ms) | |
1211 | delay_jiffies = | |
1212 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1213 | else | |
1214 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1215 | } else { | |
cceb433a KK |
1216 | info->path_usb = MAX77693_CONTROL1_SW_USB; |
1217 | info->path_uart = MAX77693_CONTROL1_SW_UART; | |
190d7cfc CC |
1218 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); |
1219 | } | |
2b75799f | 1220 | |
6865f2ef MS |
1221 | /* Set initial path for UART when JIG is connected to get serial logs */ |
1222 | ret = regmap_bulk_read(info->max77693->regmap_muic, | |
1223 | MAX77693_MUIC_REG_STATUS1, info->status, 2); | |
1224 | if (ret) { | |
1225 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1226 | return ret; | |
1227 | } | |
1228 | cable_type = max77693_muic_get_cable_type(info, | |
1229 | MAX77693_CABLE_GROUP_ADC, &attached); | |
1230 | if (attached && (cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON || | |
1231 | cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF)) | |
1232 | max77693_muic_set_path(info, info->path_uart, true); | |
2b75799f | 1233 | |
db1b9037 | 1234 | /* Check revision number of MUIC device*/ |
d0540f91 | 1235 | ret = regmap_read(info->max77693->regmap_muic, |
db1b9037 CC |
1236 | MAX77693_MUIC_REG_ID, &id); |
1237 | if (ret < 0) { | |
1238 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
d7155231 | 1239 | return ret; |
db1b9037 CC |
1240 | } |
1241 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1242 | ||
1243 | /* Set ADC debounce time */ | |
1244 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1245 | ||
297620fd CC |
1246 | /* |
1247 | * Detect accessory after completing the initialization of platform | |
1248 | * | |
1249 | * - Use delayed workqueue to detect cable state and then | |
1250 | * notify cable state to notifiee/platform through uevent. | |
1251 | * After completing the booting of platform, the extcon provider | |
1252 | * driver should notify cable state to upper layer. | |
1253 | */ | |
1254 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
b8629411 KK |
1255 | queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
1256 | delay_jiffies); | |
db1b9037 CC |
1257 | |
1258 | return ret; | |
db1b9037 CC |
1259 | } |
1260 | ||
db1b9037 CC |
1261 | static struct platform_driver max77693_muic_driver = { |
1262 | .driver = { | |
1263 | .name = DEV_NAME, | |
db1b9037 CC |
1264 | }, |
1265 | .probe = max77693_muic_probe, | |
db1b9037 CC |
1266 | }; |
1267 | ||
1268 | module_platform_driver(max77693_muic_driver); | |
1269 | ||
1270 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1271 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1272 | MODULE_LICENSE("GPL"); | |
e1efdb60 | 1273 | MODULE_ALIAS("platform:max77693-muic"); |