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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 | |
db1b9037 CC |
35 | enum max77693_muic_adc_debounce_time { |
36 | ADC_DEBOUNCE_TIME_5MS = 0, | |
37 | ADC_DEBOUNCE_TIME_10MS, | |
38 | ADC_DEBOUNCE_TIME_25MS, | |
39 | ADC_DEBOUNCE_TIME_38_62MS, | |
40 | }; | |
41 | ||
42 | struct max77693_muic_info { | |
43 | struct device *dev; | |
44 | struct max77693_dev *max77693; | |
45 | struct extcon_dev *edev; | |
154f757f CC |
46 | int prev_cable_type; |
47 | int prev_cable_type_gnd; | |
db1b9037 | 48 | int prev_chg_type; |
39bf369e | 49 | int prev_button_type; |
db1b9037 CC |
50 | u8 status[2]; |
51 | ||
52 | int irq; | |
53 | struct work_struct irq_work; | |
54 | struct mutex mutex; | |
39bf369e | 55 | |
297620fd CC |
56 | /* |
57 | * Use delayed workqueue to detect cable state and then | |
58 | * notify cable state to notifiee/platform through uevent. | |
59 | * After completing the booting of platform, the extcon provider | |
60 | * driver should notify cable state to upper layer. | |
61 | */ | |
62 | struct delayed_work wq_detcable; | |
63 | ||
39bf369e CC |
64 | /* Button of dock device */ |
65 | struct input_dev *dock; | |
2b75799f CC |
66 | |
67 | /* | |
68 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
69 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
70 | */ | |
71 | int path_usb; | |
72 | int path_uart; | |
db1b9037 CC |
73 | }; |
74 | ||
154f757f CC |
75 | enum max77693_muic_cable_group { |
76 | MAX77693_CABLE_GROUP_ADC = 0, | |
77 | MAX77693_CABLE_GROUP_ADC_GND, | |
78 | MAX77693_CABLE_GROUP_CHG, | |
79 | MAX77693_CABLE_GROUP_VBVOLT, | |
80 | }; | |
81 | ||
db1b9037 CC |
82 | enum max77693_muic_charger_type { |
83 | MAX77693_CHARGER_TYPE_NONE = 0, | |
84 | MAX77693_CHARGER_TYPE_USB, | |
85 | MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, | |
86 | MAX77693_CHARGER_TYPE_DEDICATED_CHG, | |
87 | MAX77693_CHARGER_TYPE_APPLE_500MA, | |
88 | MAX77693_CHARGER_TYPE_APPLE_1A_2A, | |
89 | MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, | |
90 | }; | |
91 | ||
92 | /** | |
93 | * struct max77693_muic_irq | |
94 | * @irq: the index of irq list of MUIC device. | |
95 | * @name: the name of irq. | |
96 | * @virq: the virtual irq to use irq domain | |
97 | */ | |
98 | struct max77693_muic_irq { | |
99 | unsigned int irq; | |
100 | const char *name; | |
101 | unsigned int virq; | |
102 | }; | |
103 | ||
104 | static struct max77693_muic_irq muic_irqs[] = { | |
105 | { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, | |
106 | { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, | |
107 | { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, | |
108 | { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, | |
109 | { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, | |
110 | { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, | |
111 | { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, | |
112 | { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, | |
113 | { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, | |
114 | { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, | |
115 | { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, | |
116 | { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, | |
117 | { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, | |
118 | { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, | |
119 | { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, | |
120 | { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, | |
121 | }; | |
122 | ||
123 | /* Define supported accessory type */ | |
124 | enum max77693_muic_acc_type { | |
125 | MAX77693_MUIC_ADC_GROUND = 0x0, | |
126 | MAX77693_MUIC_ADC_SEND_END_BUTTON, | |
127 | MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, | |
128 | MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, | |
129 | MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, | |
130 | MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, | |
131 | MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, | |
132 | MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, | |
133 | MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, | |
134 | MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, | |
135 | MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, | |
136 | MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, | |
137 | MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, | |
138 | MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, | |
139 | MAX77693_MUIC_ADC_RESERVED_ACC_1, | |
140 | MAX77693_MUIC_ADC_RESERVED_ACC_2, | |
141 | MAX77693_MUIC_ADC_RESERVED_ACC_3, | |
142 | MAX77693_MUIC_ADC_RESERVED_ACC_4, | |
143 | MAX77693_MUIC_ADC_RESERVED_ACC_5, | |
144 | MAX77693_MUIC_ADC_CEA936_AUDIO, | |
145 | MAX77693_MUIC_ADC_PHONE_POWERED_DEV, | |
146 | MAX77693_MUIC_ADC_TTY_CONVERTER, | |
147 | MAX77693_MUIC_ADC_UART_CABLE, | |
148 | MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, | |
149 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, | |
150 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, | |
151 | MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, | |
152 | MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, | |
153 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, | |
154 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, | |
155 | MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, | |
156 | MAX77693_MUIC_ADC_OPEN, | |
157 | ||
158 | /* The below accessories have same ADC value so ADCLow and | |
159 | ADC1K bit is used to separate specific accessory */ | |
06bed0af CC |
160 | MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, VBVolot:0, ADCLow:0, ADC1K:0 */ |
161 | MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* ADC:0x0, VBVolot:1, ADCLow:0, ADC1K:0 */ | |
162 | MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:0 */ | |
163 | MAX77693_MUIC_GND_MHL = 0x103, /* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:1 */ | |
164 | MAX77693_MUIC_GND_MHL_VB = 0x107, /* ADC:0x0, VBVolot:1, ADCLow:1, ADC1K:1 */ | |
db1b9037 CC |
165 | }; |
166 | ||
167 | /* MAX77693 MUIC device support below list of accessories(external connector) */ | |
154f757f CC |
168 | enum { |
169 | EXTCON_CABLE_USB = 0, | |
170 | EXTCON_CABLE_USB_HOST, | |
171 | EXTCON_CABLE_TA, | |
172 | EXTCON_CABLE_FAST_CHARGER, | |
173 | EXTCON_CABLE_SLOW_CHARGER, | |
174 | EXTCON_CABLE_CHARGE_DOWNSTREAM, | |
175 | EXTCON_CABLE_MHL, | |
06bed0af | 176 | EXTCON_CABLE_MHL_TA, |
d0587eb7 CC |
177 | EXTCON_CABLE_JIG_USB_ON, |
178 | EXTCON_CABLE_JIG_USB_OFF, | |
179 | EXTCON_CABLE_JIG_UART_OFF, | |
39bf369e CC |
180 | EXTCON_CABLE_JIG_UART_ON, |
181 | EXTCON_CABLE_DOCK_SMART, | |
182 | EXTCON_CABLE_DOCK_DESK, | |
183 | EXTCON_CABLE_DOCK_AUDIO, | |
154f757f CC |
184 | |
185 | _EXTCON_CABLE_NUM, | |
186 | }; | |
db1b9037 | 187 | |
45d4a4e6 | 188 | static const char *max77693_extcon_cable[] = { |
154f757f CC |
189 | [EXTCON_CABLE_USB] = "USB", |
190 | [EXTCON_CABLE_USB_HOST] = "USB-Host", | |
191 | [EXTCON_CABLE_TA] = "TA", | |
192 | [EXTCON_CABLE_FAST_CHARGER] = "Fast-charger", | |
193 | [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger", | |
194 | [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream", | |
195 | [EXTCON_CABLE_MHL] = "MHL", | |
06bed0af | 196 | [EXTCON_CABLE_MHL_TA] = "MHL_TA", |
d0587eb7 CC |
197 | [EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON", |
198 | [EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF", | |
199 | [EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF", | |
39bf369e CC |
200 | [EXTCON_CABLE_JIG_UART_ON] = "Dock-Car", |
201 | [EXTCON_CABLE_DOCK_SMART] = "Dock-Smart", | |
202 | [EXTCON_CABLE_DOCK_DESK] = "Dock-Desk", | |
203 | [EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio", | |
d0587eb7 | 204 | |
db1b9037 CC |
205 | NULL, |
206 | }; | |
207 | ||
154f757f CC |
208 | /* |
209 | * max77693_muic_set_debounce_time - Set the debounce time of ADC | |
210 | * @info: the instance including private data of max77693 MUIC | |
211 | * @time: the debounce time of ADC | |
212 | */ | |
db1b9037 CC |
213 | static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
214 | enum max77693_muic_adc_debounce_time time) | |
215 | { | |
bf2627d6 | 216 | int ret; |
db1b9037 CC |
217 | |
218 | switch (time) { | |
219 | case ADC_DEBOUNCE_TIME_5MS: | |
220 | case ADC_DEBOUNCE_TIME_10MS: | |
221 | case ADC_DEBOUNCE_TIME_25MS: | |
222 | case ADC_DEBOUNCE_TIME_38_62MS: | |
bf2627d6 AL |
223 | ret = max77693_update_reg(info->max77693->regmap_muic, |
224 | MAX77693_MUIC_REG_CTRL3, | |
225 | time << CONTROL3_ADCDBSET_SHIFT, | |
226 | CONTROL3_ADCDBSET_MASK); | |
19d3243e | 227 | if (ret) { |
db1b9037 | 228 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
19d3243e CC |
229 | return -EAGAIN; |
230 | } | |
db1b9037 CC |
231 | break; |
232 | default: | |
233 | dev_err(info->dev, "invalid ADC debounce time\n"); | |
19d3243e | 234 | return -EINVAL; |
db1b9037 CC |
235 | } |
236 | ||
19d3243e | 237 | return 0; |
db1b9037 CC |
238 | }; |
239 | ||
154f757f CC |
240 | /* |
241 | * max77693_muic_set_path - Set hardware line according to attached cable | |
242 | * @info: the instance including private data of max77693 MUIC | |
243 | * @value: the path according to attached cable | |
244 | * @attached: the state of cable (true:attached, false:detached) | |
245 | * | |
246 | * The max77693 MUIC device share outside H/W line among a varity of cables | |
247 | * so, this function set internal path of H/W line according to the type of | |
248 | * attached cable. | |
249 | */ | |
db1b9037 CC |
250 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
251 | u8 val, bool attached) | |
252 | { | |
253 | int ret = 0; | |
254 | u8 ctrl1, ctrl2 = 0; | |
255 | ||
256 | if (attached) | |
257 | ctrl1 = val; | |
258 | else | |
259 | ctrl1 = CONTROL1_SW_OPEN; | |
260 | ||
261 | ret = max77693_update_reg(info->max77693->regmap_muic, | |
262 | MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK); | |
263 | if (ret < 0) { | |
264 | dev_err(info->dev, "failed to update MUIC register\n"); | |
19d3243e | 265 | return -EAGAIN; |
db1b9037 CC |
266 | } |
267 | ||
268 | if (attached) | |
269 | ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ | |
270 | else | |
271 | ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ | |
272 | ||
273 | ret = max77693_update_reg(info->max77693->regmap_muic, | |
274 | MAX77693_MUIC_REG_CTRL2, ctrl2, | |
275 | CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); | |
276 | if (ret < 0) { | |
277 | dev_err(info->dev, "failed to update MUIC register\n"); | |
19d3243e | 278 | return -EAGAIN; |
db1b9037 CC |
279 | } |
280 | ||
281 | dev_info(info->dev, | |
282 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
283 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
284 | |
285 | return 0; | |
db1b9037 CC |
286 | } |
287 | ||
154f757f CC |
288 | /* |
289 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
290 | * @info: the instance including private data of max77693 MUIC | |
291 | * @group: the path according to attached cable | |
292 | * @attached: store cable state and return | |
293 | * | |
294 | * This function check the cable state either attached or detached, | |
295 | * and then divide precise type of cable according to cable group. | |
296 | * - MAX77693_CABLE_GROUP_ADC | |
297 | * - MAX77693_CABLE_GROUP_ADC_GND | |
298 | * - MAX77693_CABLE_GROUP_CHG | |
299 | * - MAX77693_CABLE_GROUP_VBVOLT | |
300 | */ | |
301 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
302 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 303 | { |
154f757f CC |
304 | int cable_type = 0; |
305 | int adc; | |
306 | int adc1k; | |
307 | int adclow; | |
308 | int vbvolt; | |
309 | int chg_type; | |
310 | ||
311 | switch (group) { | |
312 | case MAX77693_CABLE_GROUP_ADC: | |
313 | /* | |
314 | * Read ADC value to check cable type and decide cable state | |
315 | * according to cable type | |
316 | */ | |
317 | adc = info->status[0] & STATUS1_ADC_MASK; | |
318 | adc >>= STATUS1_ADC_SHIFT; | |
319 | ||
320 | /* | |
321 | * Check current cable state/cable type and store cable type | |
322 | * (info->prev_cable_type) for handling cable when cable is | |
323 | * detached. | |
324 | */ | |
325 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
326 | *attached = false; | |
327 | ||
328 | cable_type = info->prev_cable_type; | |
329 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
330 | } else { | |
331 | *attached = true; | |
332 | ||
333 | cable_type = info->prev_cable_type = adc; | |
334 | } | |
335 | break; | |
336 | case MAX77693_CABLE_GROUP_ADC_GND: | |
337 | /* | |
338 | * Read ADC value to check cable type and decide cable state | |
339 | * according to cable type | |
340 | */ | |
341 | adc = info->status[0] & STATUS1_ADC_MASK; | |
342 | adc >>= STATUS1_ADC_SHIFT; | |
db1b9037 | 343 | |
154f757f CC |
344 | /* |
345 | * Check current cable state/cable type and store cable type | |
346 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
347 | * is detached. | |
348 | */ | |
349 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
350 | *attached = false; | |
351 | ||
352 | cable_type = info->prev_cable_type_gnd; | |
353 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
354 | } else { | |
355 | *attached = true; | |
356 | ||
357 | adclow = info->status[0] & STATUS1_ADCLOW_MASK; | |
358 | adclow >>= STATUS1_ADCLOW_SHIFT; | |
359 | adc1k = info->status[0] & STATUS1_ADC1K_MASK; | |
360 | adc1k >>= STATUS1_ADC1K_SHIFT; | |
361 | ||
362 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; | |
363 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
364 | ||
365 | /** | |
366 | * [0x1][VBVolt][ADCLow][ADC1K] | |
367 | * [0x1 0 0 0 ] : USB_OTG | |
06bed0af | 368 | * [0x1 1 0 0 ] : USB_OTG_VB |
154f757f CC |
369 | * [0x1 0 1 0 ] : Audio Video Cable with load |
370 | * [0x1 0 1 1 ] : MHL without charging connector | |
371 | * [0x1 1 1 1 ] : MHL with charging connector | |
372 | */ | |
373 | cable_type = ((0x1 << 8) | |
374 | | (vbvolt << 2) | |
375 | | (adclow << 1) | |
376 | | adc1k); | |
377 | ||
378 | info->prev_cable_type = adc; | |
379 | info->prev_cable_type_gnd = cable_type; | |
380 | } | |
381 | ||
382 | break; | |
383 | case MAX77693_CABLE_GROUP_CHG: | |
384 | /* | |
385 | * Read charger type to check cable type and decide cable state | |
386 | * according to type of charger cable. | |
387 | */ | |
388 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
389 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
390 | ||
391 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
392 | *attached = false; | |
393 | ||
394 | cable_type = info->prev_chg_type; | |
395 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
396 | } else { | |
397 | *attached = true; | |
398 | ||
399 | /* | |
400 | * Check current cable state/cable type and store cable | |
401 | * type(info->prev_chg_type) for handling cable when | |
402 | * charger cable is detached. | |
403 | */ | |
404 | cable_type = info->prev_chg_type = chg_type; | |
405 | } | |
406 | ||
407 | break; | |
408 | case MAX77693_CABLE_GROUP_VBVOLT: | |
409 | /* | |
410 | * Read ADC value to check cable type and decide cable state | |
411 | * according to cable type | |
412 | */ | |
db1b9037 | 413 | adc = info->status[0] & STATUS1_ADC_MASK; |
154f757f CC |
414 | adc >>= STATUS1_ADC_SHIFT; |
415 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
416 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
417 | ||
418 | if (adc == MAX77693_MUIC_ADC_OPEN | |
419 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
420 | *attached = false; | |
421 | else | |
422 | *attached = true; | |
423 | ||
424 | /* | |
425 | * Read vbvolt field, if vbvolt is 1, | |
426 | * this cable is used for charging. | |
db1b9037 | 427 | */ |
154f757f CC |
428 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
429 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
430 | ||
431 | cable_type = vbvolt; | |
432 | break; | |
433 | default: | |
434 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
435 | cable_type = -EINVAL; | |
436 | break; | |
437 | } | |
438 | ||
439 | return cable_type; | |
440 | } | |
441 | ||
39bf369e CC |
442 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
443 | int cable_type, bool attached) | |
444 | { | |
445 | int ret = 0; | |
a1626298 CC |
446 | int vbvolt; |
447 | bool cable_attached; | |
39bf369e CC |
448 | char dock_name[CABLE_NAME_MAX]; |
449 | ||
450 | dev_info(info->dev, | |
451 | "external connector is %s (adc:0x%02x)\n", | |
452 | attached ? "attached" : "detached", cable_type); | |
453 | ||
454 | switch (cable_type) { | |
455 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
456 | /* |
457 | * Check power cable whether attached or detached state. | |
458 | * The Dock-Smart device need surely external power supply. | |
459 | * If power cable(USB/TA) isn't connected to Dock device, | |
460 | * user can't use Dock-Smart for desktop mode. | |
461 | */ | |
462 | vbvolt = max77693_muic_get_cable_type(info, | |
463 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
464 | if (attached && !vbvolt) { | |
465 | dev_warn(info->dev, | |
466 | "Cannot detect external power supply\n"); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | /* | |
471 | * Notify Dock-Smart/MHL state. | |
472 | * - Dock-Smart device include three type of cable which | |
473 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
474 | * for USB/TA cable. Dock-Smart device need always exteranl | |
475 | * power supply(USB/TA cable through micro-usb cable). Dock- | |
476 | * Smart device support screen output of target to separate | |
477 | * monitor and mouse/keyboard for desktop mode. | |
478 | * | |
479 | * Features of 'USB/TA cable with Dock-Smart device' | |
480 | * - Support MHL | |
481 | * - Support external output feature of audio | |
482 | * - Support charging through micro-usb port without data | |
483 | * connection if TA cable is connected to target. | |
484 | * - Support charging and data connection through micro-usb port | |
485 | * if USB cable is connected between target and host | |
486 | * device. | |
487 | * - Support OTG device (Mouse/Keyboard) | |
488 | */ | |
489 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 490 | if (ret < 0) |
a1626298 | 491 | return ret; |
39bf369e | 492 | |
39bf369e | 493 | extcon_set_cable_state(info->edev, "Dock-Smart", attached); |
a1626298 | 494 | extcon_set_cable_state(info->edev, "MHL", attached); |
39bf369e CC |
495 | goto out; |
496 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
497 | strcpy(dock_name, "Dock-Car"); | |
498 | break; | |
499 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
500 | strcpy(dock_name, "Dock-Desk"); | |
501 | break; | |
502 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
503 | strcpy(dock_name, "Dock-Audio"); | |
504 | if (!attached) | |
505 | extcon_set_cable_state(info->edev, "USB", false); | |
506 | break; | |
19d3243e CC |
507 | default: |
508 | dev_err(info->dev, "failed to detect %s dock device\n", | |
509 | attached ? "attached" : "detached"); | |
510 | return -EINVAL; | |
39bf369e CC |
511 | } |
512 | ||
513 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
514 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); | |
515 | if (ret < 0) | |
a1626298 | 516 | return ret; |
39bf369e CC |
517 | extcon_set_cable_state(info->edev, dock_name, attached); |
518 | ||
519 | out: | |
a1626298 | 520 | return 0; |
39bf369e CC |
521 | } |
522 | ||
523 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
524 | int button_type, bool attached) | |
525 | { | |
526 | struct input_dev *dock = info->dock; | |
527 | unsigned int code; | |
39bf369e CC |
528 | |
529 | switch (button_type) { | |
530 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
531 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
532 | /* DOCK_KEY_PREV */ | |
533 | code = KEY_PREVIOUSSONG; | |
534 | break; | |
535 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
536 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
537 | /* DOCK_KEY_NEXT */ | |
538 | code = KEY_NEXTSONG; | |
539 | break; | |
540 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
541 | /* DOCK_VOL_DOWN */ | |
542 | code = KEY_VOLUMEDOWN; | |
543 | break; | |
544 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
545 | /* DOCK_VOL_UP */ | |
546 | code = KEY_VOLUMEUP; | |
547 | break; | |
548 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
549 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
550 | /* DOCK_KEY_PLAY_PAUSE */ | |
551 | code = KEY_PLAYPAUSE; | |
552 | break; | |
553 | default: | |
554 | dev_err(info->dev, | |
555 | "failed to detect %s key (adc:0x%x)\n", | |
556 | attached ? "pressed" : "released", button_type); | |
19d3243e | 557 | return -EINVAL; |
39bf369e CC |
558 | } |
559 | ||
560 | input_event(dock, EV_KEY, code, attached); | |
561 | input_sync(dock); | |
562 | ||
39bf369e CC |
563 | return 0; |
564 | } | |
565 | ||
154f757f CC |
566 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
567 | { | |
568 | int cable_type_gnd; | |
569 | int ret = 0; | |
570 | bool attached; | |
db1b9037 | 571 | |
154f757f CC |
572 | cable_type_gnd = max77693_muic_get_cable_type(info, |
573 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 574 | |
154f757f | 575 | switch (cable_type_gnd) { |
db1b9037 | 576 | case MAX77693_MUIC_GND_USB_OTG: |
06bed0af CC |
577 | case MAX77693_MUIC_GND_USB_OTG_VB: |
578 | /* USB_OTG, PATH: AP_USB */ | |
db1b9037 CC |
579 | ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
580 | if (ret < 0) | |
19d3243e | 581 | return ret; |
db1b9037 CC |
582 | extcon_set_cable_state(info->edev, "USB-Host", attached); |
583 | break; | |
584 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 585 | /* Audio Video Cable with load, PATH:AUDIO */ |
db1b9037 CC |
586 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
587 | if (ret < 0) | |
19d3243e | 588 | return ret; |
db1b9037 CC |
589 | extcon_set_cable_state(info->edev, |
590 | "Audio-video-load", attached); | |
591 | break; | |
06bed0af CC |
592 | case MAX77693_MUIC_GND_MHL: |
593 | case MAX77693_MUIC_GND_MHL_VB: | |
594 | /* MHL or MHL with USB/TA cable */ | |
db1b9037 CC |
595 | extcon_set_cable_state(info->edev, "MHL", attached); |
596 | break; | |
597 | default: | |
19d3243e | 598 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 599 | attached ? "attached" : "detached"); |
19d3243e | 600 | return -EINVAL; |
db1b9037 CC |
601 | } |
602 | ||
19d3243e | 603 | return 0; |
db1b9037 CC |
604 | } |
605 | ||
d0587eb7 CC |
606 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
607 | int cable_type, bool attached) | |
608 | { | |
609 | char cable_name[32]; | |
610 | int ret = 0; | |
611 | u8 path = CONTROL1_SW_OPEN; | |
612 | ||
613 | dev_info(info->dev, | |
614 | "external connector is %s (adc:0x%02x)\n", | |
615 | attached ? "attached" : "detached", cable_type); | |
616 | ||
617 | switch (cable_type) { | |
618 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
619 | /* PATH:AP_USB */ | |
620 | strcpy(cable_name, "JIG-USB-OFF"); | |
621 | path = CONTROL1_SW_USB; | |
622 | break; | |
623 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ | |
624 | /* PATH:AP_USB */ | |
625 | strcpy(cable_name, "JIG-USB-ON"); | |
626 | path = CONTROL1_SW_USB; | |
627 | break; | |
628 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
629 | /* PATH:AP_UART */ | |
630 | strcpy(cable_name, "JIG-UART-OFF"); | |
631 | path = CONTROL1_SW_UART; | |
632 | break; | |
19d3243e CC |
633 | default: |
634 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
635 | attached ? "attached" : "detached"); | |
636 | return -EINVAL; | |
d0587eb7 CC |
637 | } |
638 | ||
639 | ret = max77693_muic_set_path(info, path, attached); | |
640 | if (ret < 0) | |
19d3243e | 641 | return ret; |
d0587eb7 CC |
642 | |
643 | extcon_set_cable_state(info->edev, cable_name, attached); | |
19d3243e CC |
644 | |
645 | return 0; | |
d0587eb7 CC |
646 | } |
647 | ||
154f757f | 648 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 649 | { |
154f757f | 650 | int cable_type; |
39bf369e | 651 | int button_type; |
154f757f | 652 | bool attached; |
db1b9037 | 653 | int ret = 0; |
db1b9037 | 654 | |
154f757f CC |
655 | /* Check accessory state which is either detached or attached */ |
656 | cable_type = max77693_muic_get_cable_type(info, | |
657 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
658 | |
659 | dev_info(info->dev, | |
660 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
661 | attached ? "attached" : "detached", cable_type, |
662 | info->prev_cable_type); | |
db1b9037 | 663 | |
154f757f | 664 | switch (cable_type) { |
db1b9037 CC |
665 | case MAX77693_MUIC_ADC_GROUND: |
666 | /* USB_OTG/MHL/Audio */ | |
154f757f | 667 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
668 | break; |
669 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
670 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 671 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
db1b9037 | 672 | /* JIG */ |
d0587eb7 | 673 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 674 | if (ret < 0) |
19d3243e | 675 | return ret; |
db1b9037 | 676 | break; |
39bf369e CC |
677 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
678 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
679 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
680 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
681 | /* | |
682 | * DOCK device | |
683 | * | |
684 | * The MAX77693 MUIC device can detect total 34 cable type | |
685 | * except of charger cable and MUIC device didn't define | |
686 | * specfic role of cable in the range of from 0x01 to 0x12 | |
687 | * of ADC value. So, can use/define cable with no role according | |
688 | * to schema of hardware board. | |
689 | */ | |
690 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
691 | if (ret < 0) | |
19d3243e | 692 | return ret; |
39bf369e CC |
693 | break; |
694 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ | |
695 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
696 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
697 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
698 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
699 | /* | |
700 | * Button of DOCK device | |
701 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
702 | * | |
703 | * The MAX77693 MUIC device can detect total 34 cable type | |
704 | * except of charger cable and MUIC device didn't define | |
705 | * specfic role of cable in the range of from 0x01 to 0x12 | |
706 | * of ADC value. So, can use/define cable with no role according | |
707 | * to schema of hardware board. | |
708 | */ | |
709 | if (attached) | |
710 | button_type = info->prev_button_type = cable_type; | |
711 | else | |
712 | button_type = info->prev_button_type; | |
713 | ||
714 | ret = max77693_muic_dock_button_handler(info, button_type, | |
715 | attached); | |
db1b9037 | 716 | if (ret < 0) |
19d3243e | 717 | return ret; |
db1b9037 CC |
718 | break; |
719 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
720 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
721 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
722 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
723 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
724 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 725 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 726 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
727 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
728 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
729 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
730 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
731 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
732 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
733 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
734 | case MAX77693_MUIC_ADC_UART_CABLE: | |
735 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 736 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
737 | /* |
738 | * This accessory isn't used in general case if it is specially | |
739 | * needed to detect additional accessory, should implement | |
740 | * proper operation when this accessory is attached/detached. | |
741 | */ | |
db1b9037 CC |
742 | dev_info(info->dev, |
743 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 744 | attached ? "attached" : "detached", cable_type); |
19d3243e | 745 | return -EAGAIN; |
db1b9037 CC |
746 | default: |
747 | dev_err(info->dev, | |
748 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 749 | attached ? "attached" : "detached", cable_type); |
19d3243e | 750 | return -EINVAL; |
db1b9037 CC |
751 | } |
752 | ||
19d3243e | 753 | return 0; |
db1b9037 CC |
754 | } |
755 | ||
154f757f | 756 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 757 | { |
db1b9037 | 758 | int chg_type; |
06bed0af | 759 | int cable_type_gnd; |
39bf369e | 760 | int cable_type; |
154f757f | 761 | bool attached; |
06bed0af | 762 | bool cable_attached; |
154f757f | 763 | int ret = 0; |
db1b9037 | 764 | |
154f757f CC |
765 | chg_type = max77693_muic_get_cable_type(info, |
766 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
767 | |
768 | dev_info(info->dev, | |
769 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
770 | attached ? "attached" : "detached", | |
154f757f | 771 | chg_type, info->prev_chg_type); |
db1b9037 CC |
772 | |
773 | switch (chg_type) { | |
774 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 775 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 776 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 777 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
778 | cable_type_gnd = max77693_muic_get_cable_type(info, |
779 | MAX77693_CABLE_GROUP_ADC_GND, | |
780 | &cable_attached); | |
a1626298 CC |
781 | switch (cable_type_gnd) { |
782 | case MAX77693_MUIC_GND_MHL: | |
783 | case MAX77693_MUIC_GND_MHL_VB: | |
784 | /* | |
785 | * MHL cable with MHL_TA(USB/TA) cable | |
786 | * - MHL cable include two port(HDMI line and separate micro- | |
787 | * usb port. When the target connect MHL cable, extcon driver | |
788 | * check whether MHL_TA(USB/TA) cable is connected. If MHL_TA | |
789 | * cable is connected, extcon driver notify state to notifiee | |
790 | * for charging battery. | |
791 | * | |
792 | * Features of 'MHL_TA(USB/TA) with MHL cable' | |
793 | * - Support MHL | |
794 | * - Support charging through micro-usb port without data connection | |
795 | */ | |
06bed0af | 796 | extcon_set_cable_state(info->edev, "MHL_TA", attached); |
06bed0af | 797 | if (!cable_attached) |
a1626298 CC |
798 | extcon_set_cable_state(info->edev, "MHL", cable_attached); |
799 | break; | |
39bf369e CC |
800 | } |
801 | ||
a1626298 | 802 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
803 | cable_type = max77693_muic_get_cable_type(info, |
804 | MAX77693_CABLE_GROUP_ADC, | |
805 | &cable_attached); | |
a1626298 CC |
806 | switch (cable_type) { |
807 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
808 | /* | |
809 | * Dock-Audio device with USB/TA cable | |
810 | * - Dock device include two port(Dock-Audio and micro-usb | |
811 | * port). When the target connect Dock-Audio device, extcon | |
812 | * driver check whether USB/TA cable is connected. If USB/TA | |
813 | * cable is connected, extcon driver notify state to notifiee | |
814 | * for charging battery. | |
815 | * | |
816 | * Features of 'USB/TA cable with Dock-Audio device' | |
817 | * - Support external output feature of audio. | |
818 | * - Support charging through micro-usb port without data | |
819 | * connection. | |
820 | */ | |
06bed0af | 821 | extcon_set_cable_state(info->edev, "USB", attached); |
39bf369e CC |
822 | |
823 | if (!cable_attached) | |
a1626298 CC |
824 | extcon_set_cable_state(info->edev, "Dock-Audio", cable_attached); |
825 | break; | |
826 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
827 | /* | |
828 | * Dock-Smart device with USB/TA cable | |
829 | * - Dock-Desk device include three type of cable which | |
830 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
831 | * for USB/TA cable. Dock-Smart device need always exteranl | |
832 | * power supply(USB/TA cable through micro-usb cable). Dock- | |
833 | * Smart device support screen output of target to separate | |
834 | * monitor and mouse/keyboard for desktop mode. | |
835 | * | |
836 | * Features of 'USB/TA cable with Dock-Smart device' | |
837 | * - Support MHL | |
838 | * - Support external output feature of audio | |
839 | * - Support charging through micro-usb port without data | |
840 | * connection if TA cable is connected to target. | |
841 | * - Support charging and data connection through micro-usb port | |
842 | * if USB cable is connected between target and host | |
843 | * device. | |
844 | * - Support OTG device (Mouse/Keyboard) | |
845 | */ | |
846 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
847 | if (ret < 0) | |
848 | return ret; | |
849 | ||
850 | extcon_set_cable_state(info->edev, "Dock-Smart", attached); | |
851 | extcon_set_cable_state(info->edev, "MHL", attached); | |
852 | ||
853 | break; | |
06bed0af | 854 | } |
39bf369e | 855 | |
a1626298 CC |
856 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
857 | switch (chg_type) { | |
858 | case MAX77693_CHARGER_TYPE_NONE: | |
859 | /* | |
860 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable | |
861 | * is attached, muic device happen below two interrupt. | |
862 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting MHL/Dock-Audio. | |
863 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting USB/TA cable | |
864 | * connected to MHL or Dock-Audio. | |
865 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC interrupt | |
866 | * than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt. | |
867 | * | |
868 | * If user attach MHL (with USB/TA cable and immediately detach | |
869 | * MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP | |
870 | * interrupt is happened, USB/TA cable remain connected state to | |
871 | * target. But USB/TA cable isn't connected to target. The user | |
872 | * be face with unusual action. So, driver should check this | |
873 | * situation in spite of, that previous charger type is N/A. | |
874 | */ | |
0e2738f5 | 875 | break; |
a1626298 CC |
876 | case MAX77693_CHARGER_TYPE_USB: |
877 | /* Only USB cable, PATH:AP_USB */ | |
878 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
879 | if (ret < 0) | |
880 | return ret; | |
0e2738f5 | 881 | |
a1626298 CC |
882 | extcon_set_cable_state(info->edev, "USB", attached); |
883 | break; | |
884 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
885 | /* Only TA cable */ | |
886 | extcon_set_cable_state(info->edev, "TA", attached); | |
887 | break; | |
888 | } | |
db1b9037 CC |
889 | break; |
890 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
891 | extcon_set_cable_state(info->edev, | |
892 | "Charge-downstream", attached); | |
893 | break; | |
db1b9037 CC |
894 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
895 | extcon_set_cable_state(info->edev, "Slow-charger", attached); | |
896 | break; | |
897 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
898 | extcon_set_cable_state(info->edev, "Fast-charger", attached); | |
899 | break; | |
900 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
901 | break; | |
902 | default: | |
903 | dev_err(info->dev, | |
904 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
905 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 906 | return -EINVAL; |
db1b9037 CC |
907 | } |
908 | ||
a1626298 | 909 | return 0; |
db1b9037 CC |
910 | } |
911 | ||
912 | static void max77693_muic_irq_work(struct work_struct *work) | |
913 | { | |
914 | struct max77693_muic_info *info = container_of(work, | |
915 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
916 | int irq_type = -1; |
917 | int i, ret = 0; | |
db1b9037 CC |
918 | |
919 | if (!info->edev) | |
920 | return; | |
921 | ||
922 | mutex_lock(&info->mutex); | |
923 | ||
924 | for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++) | |
925 | if (info->irq == muic_irqs[i].virq) | |
926 | irq_type = muic_irqs[i].irq; | |
927 | ||
928 | ret = max77693_bulk_read(info->max77693->regmap_muic, | |
929 | MAX77693_MUIC_REG_STATUS1, 2, info->status); | |
930 | if (ret) { | |
931 | dev_err(info->dev, "failed to read MUIC register\n"); | |
932 | mutex_unlock(&info->mutex); | |
933 | return; | |
934 | } | |
935 | ||
936 | switch (irq_type) { | |
937 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
938 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
939 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
940 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
941 | /* Handle all of accessory except for | |
942 | type of charger accessory */ | |
154f757f | 943 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
944 | break; |
945 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
946 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
947 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
948 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
949 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
950 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
951 | /* Handle charger accessory */ | |
154f757f | 952 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
953 | break; |
954 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
955 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
956 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
957 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
958 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
959 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
960 | break; | |
961 | default: | |
962 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
963 | irq_type); | |
19d3243e CC |
964 | mutex_unlock(&info->mutex); |
965 | return; | |
db1b9037 CC |
966 | } |
967 | ||
968 | if (ret < 0) | |
969 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
970 | ||
971 | mutex_unlock(&info->mutex); | |
972 | ||
973 | return; | |
974 | } | |
975 | ||
976 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
977 | { | |
978 | struct max77693_muic_info *info = data; | |
979 | ||
980 | info->irq = irq; | |
981 | schedule_work(&info->irq_work); | |
982 | ||
983 | return IRQ_HANDLED; | |
984 | } | |
985 | ||
986 | static struct regmap_config max77693_muic_regmap_config = { | |
987 | .reg_bits = 8, | |
988 | .val_bits = 8, | |
989 | }; | |
990 | ||
991 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
992 | { | |
993 | int ret = 0; | |
154f757f CC |
994 | int adc; |
995 | int chg_type; | |
996 | bool attached; | |
db1b9037 CC |
997 | |
998 | mutex_lock(&info->mutex); | |
999 | ||
1000 | /* Read STATUSx register to detect accessory */ | |
1001 | ret = max77693_bulk_read(info->max77693->regmap_muic, | |
1002 | MAX77693_MUIC_REG_STATUS1, 2, info->status); | |
1003 | if (ret) { | |
1004 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1005 | mutex_unlock(&info->mutex); | |
1006 | return -EINVAL; | |
1007 | } | |
1008 | ||
154f757f CC |
1009 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1010 | &attached); | |
1011 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1012 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1013 | if (ret < 0) { |
154f757f | 1014 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1015 | mutex_unlock(&info->mutex); |
1016 | return ret; | |
1017 | } | |
db1b9037 CC |
1018 | } |
1019 | ||
154f757f CC |
1020 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1021 | &attached); | |
1022 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1023 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1024 | if (ret < 0) { |
154f757f | 1025 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1026 | mutex_unlock(&info->mutex); |
1027 | return ret; | |
1028 | } | |
db1b9037 CC |
1029 | } |
1030 | ||
db1b9037 | 1031 | mutex_unlock(&info->mutex); |
154f757f | 1032 | |
19d3243e | 1033 | return 0; |
db1b9037 CC |
1034 | } |
1035 | ||
297620fd CC |
1036 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1037 | { | |
1038 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1039 | struct max77693_muic_info, wq_detcable); | |
1040 | ||
1041 | max77693_muic_detect_accessory(info); | |
1042 | } | |
1043 | ||
44f34fd4 | 1044 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1045 | { |
1046 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 CC |
1047 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
1048 | struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; | |
db1b9037 | 1049 | struct max77693_muic_info *info; |
297620fd CC |
1050 | int delay_jiffies; |
1051 | int ret; | |
1052 | int i; | |
db1b9037 CC |
1053 | u8 id; |
1054 | ||
f4bb5cb5 SK |
1055 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1056 | GFP_KERNEL); | |
db1b9037 CC |
1057 | if (!info) { |
1058 | dev_err(&pdev->dev, "failed to allocate memory\n"); | |
f4bb5cb5 | 1059 | return -ENOMEM; |
db1b9037 CC |
1060 | } |
1061 | info->dev = &pdev->dev; | |
1062 | info->max77693 = max77693; | |
1967fa08 | 1063 | if (info->max77693->regmap_muic) { |
b186b124 | 1064 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1065 | } else { |
b186b124 CC |
1066 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
1067 | info->max77693->muic, | |
1068 | &max77693_muic_regmap_config); | |
1069 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1070 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1071 | dev_err(max77693->dev, | |
1072 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1073 | return ret; |
b186b124 | 1074 | } |
db1b9037 | 1075 | } |
39bf369e CC |
1076 | |
1077 | /* Register input device for button of dock device */ | |
eff7d74f | 1078 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1079 | if (!info->dock) { |
1080 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1081 | return -ENOMEM; | |
1082 | } | |
1083 | info->dock->name = "max77693-muic/dock"; | |
1084 | info->dock->phys = "max77693-muic/extcon"; | |
1085 | info->dock->dev.parent = &pdev->dev; | |
1086 | ||
1087 | __set_bit(EV_REP, info->dock->evbit); | |
1088 | ||
1089 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1090 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1091 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1092 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1093 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1094 | ||
1095 | ret = input_register_device(info->dock); | |
1096 | if (ret < 0) { | |
1097 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1098 | ret); | |
1099 | return ret; | |
1100 | } | |
1101 | ||
db1b9037 CC |
1102 | platform_set_drvdata(pdev, info); |
1103 | mutex_init(&info->mutex); | |
1104 | ||
1105 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); | |
1106 | ||
1107 | /* Support irq domain for MAX77693 MUIC device */ | |
1108 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1109 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
00af4b16 | 1110 | unsigned int virq = 0; |
db1b9037 CC |
1111 | |
1112 | virq = irq_create_mapping(max77693->irq_domain, muic_irq->irq); | |
00af4b16 SK |
1113 | if (!virq) { |
1114 | ret = -EINVAL; | |
db1b9037 | 1115 | goto err_irq; |
00af4b16 | 1116 | } |
db1b9037 CC |
1117 | muic_irq->virq = virq; |
1118 | ||
1119 | ret = request_threaded_irq(virq, NULL, | |
1120 | max77693_muic_irq_handler, | |
ae3b3215 CC |
1121 | IRQF_NO_SUSPEND, |
1122 | muic_irq->name, info); | |
db1b9037 CC |
1123 | if (ret) { |
1124 | dev_err(&pdev->dev, | |
1125 | "failed: irq request (IRQ: %d," | |
1126 | " error :%d)\n", | |
1127 | muic_irq->irq, ret); | |
db1b9037 CC |
1128 | goto err_irq; |
1129 | } | |
1130 | } | |
1131 | ||
1132 | /* Initialize extcon device */ | |
f4bb5cb5 SK |
1133 | info->edev = devm_kzalloc(&pdev->dev, sizeof(struct extcon_dev), |
1134 | GFP_KERNEL); | |
db1b9037 CC |
1135 | if (!info->edev) { |
1136 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); | |
1137 | ret = -ENOMEM; | |
1138 | goto err_irq; | |
1139 | } | |
1140 | info->edev->name = DEV_NAME; | |
1141 | info->edev->supported_cable = max77693_extcon_cable; | |
1142 | ret = extcon_dev_register(info->edev, NULL); | |
1143 | if (ret) { | |
1144 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
f4bb5cb5 | 1145 | goto err_irq; |
db1b9037 CC |
1146 | } |
1147 | ||
f8457d57 CC |
1148 | /* Initialize MUIC register by using platform data */ |
1149 | for (i = 0 ; i < muic_pdata->num_init_data ; i++) { | |
1150 | enum max77693_irq_source irq_src = MAX77693_IRQ_GROUP_NR; | |
1151 | ||
1152 | max77693_write_reg(info->max77693->regmap_muic, | |
1153 | muic_pdata->init_data[i].addr, | |
1154 | muic_pdata->init_data[i].data); | |
1155 | ||
1156 | switch (muic_pdata->init_data[i].addr) { | |
1157 | case MAX77693_MUIC_REG_INTMASK1: | |
1158 | irq_src = MUIC_INT1; | |
1159 | break; | |
1160 | case MAX77693_MUIC_REG_INTMASK2: | |
1161 | irq_src = MUIC_INT2; | |
1162 | break; | |
1163 | case MAX77693_MUIC_REG_INTMASK3: | |
1164 | irq_src = MUIC_INT3; | |
1165 | break; | |
1166 | } | |
1167 | ||
1168 | if (irq_src < MAX77693_IRQ_GROUP_NR) | |
1169 | info->max77693->irq_masks_cur[irq_src] | |
1170 | = muic_pdata->init_data[i].data; | |
1171 | } | |
1172 | ||
2b75799f CC |
1173 | /* |
1174 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1175 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1176 | */ | |
1177 | if (muic_pdata->path_uart) | |
1178 | info->path_uart = muic_pdata->path_uart; | |
1179 | else | |
1180 | info->path_uart = CONTROL1_SW_UART; | |
1181 | ||
1182 | if (muic_pdata->path_usb) | |
1183 | info->path_usb = muic_pdata->path_usb; | |
1184 | else | |
1185 | info->path_usb = CONTROL1_SW_USB; | |
1186 | ||
1187 | /* Set initial path for UART */ | |
1188 | max77693_muic_set_path(info, info->path_uart, true); | |
1189 | ||
db1b9037 CC |
1190 | /* Check revision number of MUIC device*/ |
1191 | ret = max77693_read_reg(info->max77693->regmap_muic, | |
1192 | MAX77693_MUIC_REG_ID, &id); | |
1193 | if (ret < 0) { | |
1194 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
39bf369e | 1195 | goto err_extcon; |
db1b9037 CC |
1196 | } |
1197 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1198 | ||
1199 | /* Set ADC debounce time */ | |
1200 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1201 | ||
297620fd CC |
1202 | /* |
1203 | * Detect accessory after completing the initialization of platform | |
1204 | * | |
1205 | * - Use delayed workqueue to detect cable state and then | |
1206 | * notify cable state to notifiee/platform through uevent. | |
1207 | * After completing the booting of platform, the extcon provider | |
1208 | * driver should notify cable state to upper layer. | |
1209 | */ | |
1210 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
1211 | if (muic_pdata->detcable_delay_ms) | |
1212 | delay_jiffies = msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1213 | else | |
1214 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1215 | schedule_delayed_work(&info->wq_detcable, delay_jiffies); | |
db1b9037 CC |
1216 | |
1217 | return ret; | |
1218 | ||
39bf369e CC |
1219 | err_extcon: |
1220 | extcon_dev_unregister(info->edev); | |
db1b9037 | 1221 | err_irq: |
00af4b16 SK |
1222 | while (--i >= 0) |
1223 | free_irq(muic_irqs[i].virq, info); | |
db1b9037 CC |
1224 | return ret; |
1225 | } | |
1226 | ||
93ed0327 | 1227 | static int max77693_muic_remove(struct platform_device *pdev) |
db1b9037 CC |
1228 | { |
1229 | struct max77693_muic_info *info = platform_get_drvdata(pdev); | |
1230 | int i; | |
1231 | ||
1232 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) | |
1233 | free_irq(muic_irqs[i].virq, info); | |
1234 | cancel_work_sync(&info->irq_work); | |
39bf369e | 1235 | input_unregister_device(info->dock); |
db1b9037 | 1236 | extcon_dev_unregister(info->edev); |
db1b9037 CC |
1237 | |
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | static struct platform_driver max77693_muic_driver = { | |
1242 | .driver = { | |
1243 | .name = DEV_NAME, | |
1244 | .owner = THIS_MODULE, | |
1245 | }, | |
1246 | .probe = max77693_muic_probe, | |
5f7e2228 | 1247 | .remove = max77693_muic_remove, |
db1b9037 CC |
1248 | }; |
1249 | ||
1250 | module_platform_driver(max77693_muic_driver); | |
1251 | ||
1252 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1253 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1254 | MODULE_LICENSE("GPL"); | |
1255 | MODULE_ALIAS("platform:extcon-max77693"); |