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db1b9037 CC |
1 | /* |
2 | * extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC | |
3 | * | |
4 | * Copyright (C) 2012 Samsung Electrnoics | |
5 | * Chanwoo Choi <cw00.choi@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/slab.h> | |
39bf369e | 22 | #include <linux/input.h> |
db1b9037 CC |
23 | #include <linux/interrupt.h> |
24 | #include <linux/err.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/mfd/max77693.h> | |
27 | #include <linux/mfd/max77693-private.h> | |
28 | #include <linux/extcon.h> | |
29 | #include <linux/regmap.h> | |
30 | #include <linux/irqdomain.h> | |
31 | ||
32 | #define DEV_NAME "max77693-muic" | |
297620fd | 33 | #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ |
db1b9037 | 34 | |
0ec83bd2 CC |
35 | /* |
36 | * Default value of MAX77693 register to bring up MUIC device. | |
37 | * If user don't set some initial value for MUIC device through platform data, | |
38 | * extcon-max77693 driver use 'default_init_data' to bring up base operation | |
39 | * of MAX77693 MUIC device. | |
40 | */ | |
813b4516 | 41 | static struct max77693_reg_data default_init_data[] = { |
0ec83bd2 CC |
42 | { |
43 | /* STATUS2 - [3]ChgDetRun */ | |
44 | .addr = MAX77693_MUIC_REG_STATUS2, | |
45 | .data = STATUS2_CHGDETRUN_MASK, | |
46 | }, { | |
47 | /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ | |
48 | .addr = MAX77693_MUIC_REG_INTMASK1, | |
49 | .data = INTMASK1_ADC1K_MASK | |
50 | | INTMASK1_ADC_MASK, | |
51 | }, { | |
52 | /* INTMASK2 - Unmask [0]ChgTypM */ | |
53 | .addr = MAX77693_MUIC_REG_INTMASK2, | |
54 | .data = INTMASK2_CHGTYP_MASK, | |
55 | }, { | |
56 | /* INTMASK3 - Mask all of interrupts */ | |
57 | .addr = MAX77693_MUIC_REG_INTMASK3, | |
58 | .data = 0x0, | |
59 | }, { | |
60 | /* CDETCTRL2 */ | |
61 | .addr = MAX77693_MUIC_REG_CDETCTRL2, | |
62 | .data = CDETCTRL2_VIDRMEN_MASK | |
63 | | CDETCTRL2_DXOVPEN_MASK, | |
64 | }, | |
65 | }; | |
66 | ||
db1b9037 CC |
67 | enum max77693_muic_adc_debounce_time { |
68 | ADC_DEBOUNCE_TIME_5MS = 0, | |
69 | ADC_DEBOUNCE_TIME_10MS, | |
70 | ADC_DEBOUNCE_TIME_25MS, | |
71 | ADC_DEBOUNCE_TIME_38_62MS, | |
72 | }; | |
73 | ||
74 | struct max77693_muic_info { | |
75 | struct device *dev; | |
76 | struct max77693_dev *max77693; | |
77 | struct extcon_dev *edev; | |
154f757f CC |
78 | int prev_cable_type; |
79 | int prev_cable_type_gnd; | |
db1b9037 | 80 | int prev_chg_type; |
39bf369e | 81 | int prev_button_type; |
db1b9037 CC |
82 | u8 status[2]; |
83 | ||
84 | int irq; | |
85 | struct work_struct irq_work; | |
86 | struct mutex mutex; | |
39bf369e | 87 | |
297620fd CC |
88 | /* |
89 | * Use delayed workqueue to detect cable state and then | |
90 | * notify cable state to notifiee/platform through uevent. | |
91 | * After completing the booting of platform, the extcon provider | |
92 | * driver should notify cable state to upper layer. | |
93 | */ | |
94 | struct delayed_work wq_detcable; | |
95 | ||
39bf369e CC |
96 | /* Button of dock device */ |
97 | struct input_dev *dock; | |
2b75799f CC |
98 | |
99 | /* | |
100 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
101 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
102 | */ | |
103 | int path_usb; | |
104 | int path_uart; | |
db1b9037 CC |
105 | }; |
106 | ||
154f757f CC |
107 | enum max77693_muic_cable_group { |
108 | MAX77693_CABLE_GROUP_ADC = 0, | |
109 | MAX77693_CABLE_GROUP_ADC_GND, | |
110 | MAX77693_CABLE_GROUP_CHG, | |
111 | MAX77693_CABLE_GROUP_VBVOLT, | |
112 | }; | |
113 | ||
db1b9037 CC |
114 | enum max77693_muic_charger_type { |
115 | MAX77693_CHARGER_TYPE_NONE = 0, | |
116 | MAX77693_CHARGER_TYPE_USB, | |
117 | MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, | |
118 | MAX77693_CHARGER_TYPE_DEDICATED_CHG, | |
119 | MAX77693_CHARGER_TYPE_APPLE_500MA, | |
120 | MAX77693_CHARGER_TYPE_APPLE_1A_2A, | |
121 | MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, | |
122 | }; | |
123 | ||
124 | /** | |
125 | * struct max77693_muic_irq | |
126 | * @irq: the index of irq list of MUIC device. | |
127 | * @name: the name of irq. | |
128 | * @virq: the virtual irq to use irq domain | |
129 | */ | |
130 | struct max77693_muic_irq { | |
131 | unsigned int irq; | |
132 | const char *name; | |
133 | unsigned int virq; | |
134 | }; | |
135 | ||
136 | static struct max77693_muic_irq muic_irqs[] = { | |
137 | { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, | |
138 | { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, | |
139 | { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, | |
140 | { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, | |
141 | { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, | |
142 | { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, | |
143 | { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, | |
144 | { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, | |
145 | { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, | |
146 | { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, | |
147 | { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, | |
148 | { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, | |
149 | { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, | |
150 | { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, | |
151 | { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, | |
152 | { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, | |
153 | }; | |
154 | ||
155 | /* Define supported accessory type */ | |
156 | enum max77693_muic_acc_type { | |
157 | MAX77693_MUIC_ADC_GROUND = 0x0, | |
158 | MAX77693_MUIC_ADC_SEND_END_BUTTON, | |
159 | MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, | |
160 | MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, | |
161 | MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, | |
162 | MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, | |
163 | MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, | |
164 | MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, | |
165 | MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, | |
166 | MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, | |
167 | MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, | |
168 | MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, | |
169 | MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, | |
170 | MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, | |
171 | MAX77693_MUIC_ADC_RESERVED_ACC_1, | |
172 | MAX77693_MUIC_ADC_RESERVED_ACC_2, | |
173 | MAX77693_MUIC_ADC_RESERVED_ACC_3, | |
174 | MAX77693_MUIC_ADC_RESERVED_ACC_4, | |
175 | MAX77693_MUIC_ADC_RESERVED_ACC_5, | |
176 | MAX77693_MUIC_ADC_CEA936_AUDIO, | |
177 | MAX77693_MUIC_ADC_PHONE_POWERED_DEV, | |
178 | MAX77693_MUIC_ADC_TTY_CONVERTER, | |
179 | MAX77693_MUIC_ADC_UART_CABLE, | |
180 | MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, | |
181 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, | |
182 | MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, | |
183 | MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, | |
184 | MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, | |
185 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, | |
186 | MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, | |
187 | MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, | |
188 | MAX77693_MUIC_ADC_OPEN, | |
189 | ||
190 | /* The below accessories have same ADC value so ADCLow and | |
191 | ADC1K bit is used to separate specific accessory */ | |
06bed0af CC |
192 | MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, VBVolot:0, ADCLow:0, ADC1K:0 */ |
193 | MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* ADC:0x0, VBVolot:1, ADCLow:0, ADC1K:0 */ | |
194 | MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:0 */ | |
195 | MAX77693_MUIC_GND_MHL = 0x103, /* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:1 */ | |
196 | MAX77693_MUIC_GND_MHL_VB = 0x107, /* ADC:0x0, VBVolot:1, ADCLow:1, ADC1K:1 */ | |
db1b9037 CC |
197 | }; |
198 | ||
199 | /* MAX77693 MUIC device support below list of accessories(external connector) */ | |
154f757f CC |
200 | enum { |
201 | EXTCON_CABLE_USB = 0, | |
202 | EXTCON_CABLE_USB_HOST, | |
203 | EXTCON_CABLE_TA, | |
204 | EXTCON_CABLE_FAST_CHARGER, | |
205 | EXTCON_CABLE_SLOW_CHARGER, | |
206 | EXTCON_CABLE_CHARGE_DOWNSTREAM, | |
207 | EXTCON_CABLE_MHL, | |
06bed0af | 208 | EXTCON_CABLE_MHL_TA, |
d0587eb7 CC |
209 | EXTCON_CABLE_JIG_USB_ON, |
210 | EXTCON_CABLE_JIG_USB_OFF, | |
211 | EXTCON_CABLE_JIG_UART_OFF, | |
39bf369e CC |
212 | EXTCON_CABLE_JIG_UART_ON, |
213 | EXTCON_CABLE_DOCK_SMART, | |
214 | EXTCON_CABLE_DOCK_DESK, | |
215 | EXTCON_CABLE_DOCK_AUDIO, | |
154f757f CC |
216 | |
217 | _EXTCON_CABLE_NUM, | |
218 | }; | |
db1b9037 | 219 | |
45d4a4e6 | 220 | static const char *max77693_extcon_cable[] = { |
154f757f CC |
221 | [EXTCON_CABLE_USB] = "USB", |
222 | [EXTCON_CABLE_USB_HOST] = "USB-Host", | |
223 | [EXTCON_CABLE_TA] = "TA", | |
224 | [EXTCON_CABLE_FAST_CHARGER] = "Fast-charger", | |
225 | [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger", | |
226 | [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream", | |
227 | [EXTCON_CABLE_MHL] = "MHL", | |
06bed0af | 228 | [EXTCON_CABLE_MHL_TA] = "MHL_TA", |
d0587eb7 CC |
229 | [EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON", |
230 | [EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF", | |
231 | [EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF", | |
39bf369e CC |
232 | [EXTCON_CABLE_JIG_UART_ON] = "Dock-Car", |
233 | [EXTCON_CABLE_DOCK_SMART] = "Dock-Smart", | |
234 | [EXTCON_CABLE_DOCK_DESK] = "Dock-Desk", | |
235 | [EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio", | |
d0587eb7 | 236 | |
db1b9037 CC |
237 | NULL, |
238 | }; | |
239 | ||
154f757f CC |
240 | /* |
241 | * max77693_muic_set_debounce_time - Set the debounce time of ADC | |
242 | * @info: the instance including private data of max77693 MUIC | |
243 | * @time: the debounce time of ADC | |
244 | */ | |
db1b9037 CC |
245 | static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
246 | enum max77693_muic_adc_debounce_time time) | |
247 | { | |
bf2627d6 | 248 | int ret; |
db1b9037 CC |
249 | |
250 | switch (time) { | |
251 | case ADC_DEBOUNCE_TIME_5MS: | |
252 | case ADC_DEBOUNCE_TIME_10MS: | |
253 | case ADC_DEBOUNCE_TIME_25MS: | |
254 | case ADC_DEBOUNCE_TIME_38_62MS: | |
bf2627d6 AL |
255 | ret = max77693_update_reg(info->max77693->regmap_muic, |
256 | MAX77693_MUIC_REG_CTRL3, | |
257 | time << CONTROL3_ADCDBSET_SHIFT, | |
258 | CONTROL3_ADCDBSET_MASK); | |
19d3243e | 259 | if (ret) { |
db1b9037 | 260 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
c2536543 | 261 | return ret; |
19d3243e | 262 | } |
db1b9037 CC |
263 | break; |
264 | default: | |
265 | dev_err(info->dev, "invalid ADC debounce time\n"); | |
19d3243e | 266 | return -EINVAL; |
db1b9037 CC |
267 | } |
268 | ||
19d3243e | 269 | return 0; |
db1b9037 CC |
270 | }; |
271 | ||
154f757f CC |
272 | /* |
273 | * max77693_muic_set_path - Set hardware line according to attached cable | |
274 | * @info: the instance including private data of max77693 MUIC | |
275 | * @value: the path according to attached cable | |
276 | * @attached: the state of cable (true:attached, false:detached) | |
277 | * | |
278 | * The max77693 MUIC device share outside H/W line among a varity of cables | |
279 | * so, this function set internal path of H/W line according to the type of | |
280 | * attached cable. | |
281 | */ | |
db1b9037 CC |
282 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
283 | u8 val, bool attached) | |
284 | { | |
285 | int ret = 0; | |
286 | u8 ctrl1, ctrl2 = 0; | |
287 | ||
288 | if (attached) | |
289 | ctrl1 = val; | |
290 | else | |
291 | ctrl1 = CONTROL1_SW_OPEN; | |
292 | ||
293 | ret = max77693_update_reg(info->max77693->regmap_muic, | |
294 | MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK); | |
295 | if (ret < 0) { | |
296 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 297 | return ret; |
db1b9037 CC |
298 | } |
299 | ||
300 | if (attached) | |
301 | ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ | |
302 | else | |
303 | ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ | |
304 | ||
305 | ret = max77693_update_reg(info->max77693->regmap_muic, | |
306 | MAX77693_MUIC_REG_CTRL2, ctrl2, | |
307 | CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); | |
308 | if (ret < 0) { | |
309 | dev_err(info->dev, "failed to update MUIC register\n"); | |
c2536543 | 310 | return ret; |
db1b9037 CC |
311 | } |
312 | ||
313 | dev_info(info->dev, | |
314 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
315 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
19d3243e CC |
316 | |
317 | return 0; | |
db1b9037 CC |
318 | } |
319 | ||
154f757f CC |
320 | /* |
321 | * max77693_muic_get_cable_type - Return cable type and check cable state | |
322 | * @info: the instance including private data of max77693 MUIC | |
323 | * @group: the path according to attached cable | |
324 | * @attached: store cable state and return | |
325 | * | |
326 | * This function check the cable state either attached or detached, | |
327 | * and then divide precise type of cable according to cable group. | |
328 | * - MAX77693_CABLE_GROUP_ADC | |
329 | * - MAX77693_CABLE_GROUP_ADC_GND | |
330 | * - MAX77693_CABLE_GROUP_CHG | |
331 | * - MAX77693_CABLE_GROUP_VBVOLT | |
332 | */ | |
333 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, | |
334 | enum max77693_muic_cable_group group, bool *attached) | |
db1b9037 | 335 | { |
154f757f CC |
336 | int cable_type = 0; |
337 | int adc; | |
338 | int adc1k; | |
339 | int adclow; | |
340 | int vbvolt; | |
341 | int chg_type; | |
342 | ||
343 | switch (group) { | |
344 | case MAX77693_CABLE_GROUP_ADC: | |
345 | /* | |
346 | * Read ADC value to check cable type and decide cable state | |
347 | * according to cable type | |
348 | */ | |
349 | adc = info->status[0] & STATUS1_ADC_MASK; | |
350 | adc >>= STATUS1_ADC_SHIFT; | |
351 | ||
352 | /* | |
353 | * Check current cable state/cable type and store cable type | |
354 | * (info->prev_cable_type) for handling cable when cable is | |
355 | * detached. | |
356 | */ | |
357 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
358 | *attached = false; | |
359 | ||
360 | cable_type = info->prev_cable_type; | |
361 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; | |
362 | } else { | |
363 | *attached = true; | |
364 | ||
365 | cable_type = info->prev_cable_type = adc; | |
366 | } | |
367 | break; | |
368 | case MAX77693_CABLE_GROUP_ADC_GND: | |
369 | /* | |
370 | * Read ADC value to check cable type and decide cable state | |
371 | * according to cable type | |
372 | */ | |
373 | adc = info->status[0] & STATUS1_ADC_MASK; | |
374 | adc >>= STATUS1_ADC_SHIFT; | |
db1b9037 | 375 | |
154f757f CC |
376 | /* |
377 | * Check current cable state/cable type and store cable type | |
378 | * (info->prev_cable_type/_gnd) for handling cable when cable | |
379 | * is detached. | |
380 | */ | |
381 | if (adc == MAX77693_MUIC_ADC_OPEN) { | |
382 | *attached = false; | |
383 | ||
384 | cable_type = info->prev_cable_type_gnd; | |
385 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; | |
386 | } else { | |
387 | *attached = true; | |
388 | ||
389 | adclow = info->status[0] & STATUS1_ADCLOW_MASK; | |
390 | adclow >>= STATUS1_ADCLOW_SHIFT; | |
391 | adc1k = info->status[0] & STATUS1_ADC1K_MASK; | |
392 | adc1k >>= STATUS1_ADC1K_SHIFT; | |
393 | ||
394 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; | |
395 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
396 | ||
397 | /** | |
398 | * [0x1][VBVolt][ADCLow][ADC1K] | |
399 | * [0x1 0 0 0 ] : USB_OTG | |
06bed0af | 400 | * [0x1 1 0 0 ] : USB_OTG_VB |
154f757f CC |
401 | * [0x1 0 1 0 ] : Audio Video Cable with load |
402 | * [0x1 0 1 1 ] : MHL without charging connector | |
403 | * [0x1 1 1 1 ] : MHL with charging connector | |
404 | */ | |
405 | cable_type = ((0x1 << 8) | |
406 | | (vbvolt << 2) | |
407 | | (adclow << 1) | |
408 | | adc1k); | |
409 | ||
410 | info->prev_cable_type = adc; | |
411 | info->prev_cable_type_gnd = cable_type; | |
412 | } | |
413 | ||
414 | break; | |
415 | case MAX77693_CABLE_GROUP_CHG: | |
416 | /* | |
417 | * Read charger type to check cable type and decide cable state | |
418 | * according to type of charger cable. | |
419 | */ | |
420 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
421 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
422 | ||
423 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { | |
424 | *attached = false; | |
425 | ||
426 | cable_type = info->prev_chg_type; | |
427 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; | |
428 | } else { | |
429 | *attached = true; | |
430 | ||
431 | /* | |
432 | * Check current cable state/cable type and store cable | |
433 | * type(info->prev_chg_type) for handling cable when | |
434 | * charger cable is detached. | |
435 | */ | |
436 | cable_type = info->prev_chg_type = chg_type; | |
437 | } | |
438 | ||
439 | break; | |
440 | case MAX77693_CABLE_GROUP_VBVOLT: | |
441 | /* | |
442 | * Read ADC value to check cable type and decide cable state | |
443 | * according to cable type | |
444 | */ | |
db1b9037 | 445 | adc = info->status[0] & STATUS1_ADC_MASK; |
154f757f CC |
446 | adc >>= STATUS1_ADC_SHIFT; |
447 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; | |
448 | chg_type >>= STATUS2_CHGTYP_SHIFT; | |
449 | ||
450 | if (adc == MAX77693_MUIC_ADC_OPEN | |
451 | && chg_type == MAX77693_CHARGER_TYPE_NONE) | |
452 | *attached = false; | |
453 | else | |
454 | *attached = true; | |
455 | ||
456 | /* | |
457 | * Read vbvolt field, if vbvolt is 1, | |
458 | * this cable is used for charging. | |
db1b9037 | 459 | */ |
154f757f CC |
460 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
461 | vbvolt >>= STATUS2_VBVOLT_SHIFT; | |
462 | ||
463 | cable_type = vbvolt; | |
464 | break; | |
465 | default: | |
466 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
467 | cable_type = -EINVAL; | |
468 | break; | |
469 | } | |
470 | ||
471 | return cable_type; | |
472 | } | |
473 | ||
39bf369e CC |
474 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
475 | int cable_type, bool attached) | |
476 | { | |
477 | int ret = 0; | |
a1626298 CC |
478 | int vbvolt; |
479 | bool cable_attached; | |
39bf369e CC |
480 | char dock_name[CABLE_NAME_MAX]; |
481 | ||
482 | dev_info(info->dev, | |
483 | "external connector is %s (adc:0x%02x)\n", | |
484 | attached ? "attached" : "detached", cable_type); | |
485 | ||
486 | switch (cable_type) { | |
487 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
a1626298 CC |
488 | /* |
489 | * Check power cable whether attached or detached state. | |
490 | * The Dock-Smart device need surely external power supply. | |
491 | * If power cable(USB/TA) isn't connected to Dock device, | |
492 | * user can't use Dock-Smart for desktop mode. | |
493 | */ | |
494 | vbvolt = max77693_muic_get_cable_type(info, | |
495 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); | |
496 | if (attached && !vbvolt) { | |
497 | dev_warn(info->dev, | |
498 | "Cannot detect external power supply\n"); | |
499 | return 0; | |
500 | } | |
501 | ||
502 | /* | |
503 | * Notify Dock-Smart/MHL state. | |
504 | * - Dock-Smart device include three type of cable which | |
505 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
506 | * for USB/TA cable. Dock-Smart device need always exteranl | |
507 | * power supply(USB/TA cable through micro-usb cable). Dock- | |
508 | * Smart device support screen output of target to separate | |
509 | * monitor and mouse/keyboard for desktop mode. | |
510 | * | |
511 | * Features of 'USB/TA cable with Dock-Smart device' | |
512 | * - Support MHL | |
513 | * - Support external output feature of audio | |
514 | * - Support charging through micro-usb port without data | |
515 | * connection if TA cable is connected to target. | |
516 | * - Support charging and data connection through micro-usb port | |
517 | * if USB cable is connected between target and host | |
518 | * device. | |
519 | * - Support OTG device (Mouse/Keyboard) | |
520 | */ | |
521 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
39bf369e | 522 | if (ret < 0) |
a1626298 | 523 | return ret; |
39bf369e | 524 | |
39bf369e | 525 | extcon_set_cable_state(info->edev, "Dock-Smart", attached); |
a1626298 | 526 | extcon_set_cable_state(info->edev, "MHL", attached); |
39bf369e CC |
527 | goto out; |
528 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
529 | strcpy(dock_name, "Dock-Car"); | |
530 | break; | |
531 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
532 | strcpy(dock_name, "Dock-Desk"); | |
533 | break; | |
534 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
535 | strcpy(dock_name, "Dock-Audio"); | |
536 | if (!attached) | |
537 | extcon_set_cable_state(info->edev, "USB", false); | |
538 | break; | |
19d3243e CC |
539 | default: |
540 | dev_err(info->dev, "failed to detect %s dock device\n", | |
541 | attached ? "attached" : "detached"); | |
542 | return -EINVAL; | |
39bf369e CC |
543 | } |
544 | ||
545 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ | |
546 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); | |
547 | if (ret < 0) | |
a1626298 | 548 | return ret; |
39bf369e CC |
549 | extcon_set_cable_state(info->edev, dock_name, attached); |
550 | ||
551 | out: | |
a1626298 | 552 | return 0; |
39bf369e CC |
553 | } |
554 | ||
555 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, | |
556 | int button_type, bool attached) | |
557 | { | |
558 | struct input_dev *dock = info->dock; | |
559 | unsigned int code; | |
39bf369e CC |
560 | |
561 | switch (button_type) { | |
562 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 | |
563 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: | |
564 | /* DOCK_KEY_PREV */ | |
565 | code = KEY_PREVIOUSSONG; | |
566 | break; | |
567 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 | |
568 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: | |
569 | /* DOCK_KEY_NEXT */ | |
570 | code = KEY_NEXTSONG; | |
571 | break; | |
572 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: | |
573 | /* DOCK_VOL_DOWN */ | |
574 | code = KEY_VOLUMEDOWN; | |
575 | break; | |
576 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: | |
577 | /* DOCK_VOL_UP */ | |
578 | code = KEY_VOLUMEUP; | |
579 | break; | |
580 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 | |
581 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: | |
582 | /* DOCK_KEY_PLAY_PAUSE */ | |
583 | code = KEY_PLAYPAUSE; | |
584 | break; | |
585 | default: | |
586 | dev_err(info->dev, | |
587 | "failed to detect %s key (adc:0x%x)\n", | |
588 | attached ? "pressed" : "released", button_type); | |
19d3243e | 589 | return -EINVAL; |
39bf369e CC |
590 | } |
591 | ||
592 | input_event(dock, EV_KEY, code, attached); | |
593 | input_sync(dock); | |
594 | ||
39bf369e CC |
595 | return 0; |
596 | } | |
597 | ||
154f757f CC |
598 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
599 | { | |
600 | int cable_type_gnd; | |
601 | int ret = 0; | |
602 | bool attached; | |
db1b9037 | 603 | |
154f757f CC |
604 | cable_type_gnd = max77693_muic_get_cable_type(info, |
605 | MAX77693_CABLE_GROUP_ADC_GND, &attached); | |
db1b9037 | 606 | |
154f757f | 607 | switch (cable_type_gnd) { |
db1b9037 | 608 | case MAX77693_MUIC_GND_USB_OTG: |
06bed0af CC |
609 | case MAX77693_MUIC_GND_USB_OTG_VB: |
610 | /* USB_OTG, PATH: AP_USB */ | |
db1b9037 CC |
611 | ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
612 | if (ret < 0) | |
19d3243e | 613 | return ret; |
db1b9037 CC |
614 | extcon_set_cable_state(info->edev, "USB-Host", attached); |
615 | break; | |
616 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: | |
06bed0af | 617 | /* Audio Video Cable with load, PATH:AUDIO */ |
db1b9037 CC |
618 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
619 | if (ret < 0) | |
19d3243e | 620 | return ret; |
db1b9037 CC |
621 | extcon_set_cable_state(info->edev, |
622 | "Audio-video-load", attached); | |
623 | break; | |
06bed0af CC |
624 | case MAX77693_MUIC_GND_MHL: |
625 | case MAX77693_MUIC_GND_MHL_VB: | |
626 | /* MHL or MHL with USB/TA cable */ | |
db1b9037 CC |
627 | extcon_set_cable_state(info->edev, "MHL", attached); |
628 | break; | |
629 | default: | |
19d3243e | 630 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
db1b9037 | 631 | attached ? "attached" : "detached"); |
19d3243e | 632 | return -EINVAL; |
db1b9037 CC |
633 | } |
634 | ||
19d3243e | 635 | return 0; |
db1b9037 CC |
636 | } |
637 | ||
d0587eb7 CC |
638 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
639 | int cable_type, bool attached) | |
640 | { | |
641 | char cable_name[32]; | |
642 | int ret = 0; | |
643 | u8 path = CONTROL1_SW_OPEN; | |
644 | ||
645 | dev_info(info->dev, | |
646 | "external connector is %s (adc:0x%02x)\n", | |
647 | attached ? "attached" : "detached", cable_type); | |
648 | ||
649 | switch (cable_type) { | |
650 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ | |
651 | /* PATH:AP_USB */ | |
652 | strcpy(cable_name, "JIG-USB-OFF"); | |
653 | path = CONTROL1_SW_USB; | |
654 | break; | |
655 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ | |
656 | /* PATH:AP_USB */ | |
657 | strcpy(cable_name, "JIG-USB-ON"); | |
658 | path = CONTROL1_SW_USB; | |
659 | break; | |
660 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ | |
661 | /* PATH:AP_UART */ | |
662 | strcpy(cable_name, "JIG-UART-OFF"); | |
663 | path = CONTROL1_SW_UART; | |
664 | break; | |
19d3243e CC |
665 | default: |
666 | dev_err(info->dev, "failed to detect %s jig cable\n", | |
667 | attached ? "attached" : "detached"); | |
668 | return -EINVAL; | |
d0587eb7 CC |
669 | } |
670 | ||
671 | ret = max77693_muic_set_path(info, path, attached); | |
672 | if (ret < 0) | |
19d3243e | 673 | return ret; |
d0587eb7 CC |
674 | |
675 | extcon_set_cable_state(info->edev, cable_name, attached); | |
19d3243e CC |
676 | |
677 | return 0; | |
d0587eb7 CC |
678 | } |
679 | ||
154f757f | 680 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
db1b9037 | 681 | { |
154f757f | 682 | int cable_type; |
39bf369e | 683 | int button_type; |
154f757f | 684 | bool attached; |
db1b9037 | 685 | int ret = 0; |
db1b9037 | 686 | |
154f757f CC |
687 | /* Check accessory state which is either detached or attached */ |
688 | cable_type = max77693_muic_get_cable_type(info, | |
689 | MAX77693_CABLE_GROUP_ADC, &attached); | |
db1b9037 CC |
690 | |
691 | dev_info(info->dev, | |
692 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
154f757f CC |
693 | attached ? "attached" : "detached", cable_type, |
694 | info->prev_cable_type); | |
db1b9037 | 695 | |
154f757f | 696 | switch (cable_type) { |
db1b9037 CC |
697 | case MAX77693_MUIC_ADC_GROUND: |
698 | /* USB_OTG/MHL/Audio */ | |
154f757f | 699 | max77693_muic_adc_ground_handler(info); |
db1b9037 CC |
700 | break; |
701 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
702 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: | |
db1b9037 | 703 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
db1b9037 | 704 | /* JIG */ |
d0587eb7 | 705 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
db1b9037 | 706 | if (ret < 0) |
19d3243e | 707 | return ret; |
db1b9037 | 708 | break; |
39bf369e CC |
709 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
710 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ | |
711 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ | |
712 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
713 | /* | |
714 | * DOCK device | |
715 | * | |
716 | * The MAX77693 MUIC device can detect total 34 cable type | |
717 | * except of charger cable and MUIC device didn't define | |
718 | * specfic role of cable in the range of from 0x01 to 0x12 | |
719 | * of ADC value. So, can use/define cable with no role according | |
720 | * to schema of hardware board. | |
721 | */ | |
722 | ret = max77693_muic_dock_handler(info, cable_type, attached); | |
723 | if (ret < 0) | |
19d3243e | 724 | return ret; |
39bf369e CC |
725 | break; |
726 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ | |
727 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ | |
728 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ | |
729 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ | |
730 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ | |
731 | /* | |
732 | * Button of DOCK device | |
733 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button | |
734 | * | |
735 | * The MAX77693 MUIC device can detect total 34 cable type | |
736 | * except of charger cable and MUIC device didn't define | |
737 | * specfic role of cable in the range of from 0x01 to 0x12 | |
738 | * of ADC value. So, can use/define cable with no role according | |
739 | * to schema of hardware board. | |
740 | */ | |
741 | if (attached) | |
742 | button_type = info->prev_button_type = cable_type; | |
743 | else | |
744 | button_type = info->prev_button_type; | |
745 | ||
746 | ret = max77693_muic_dock_button_handler(info, button_type, | |
747 | attached); | |
db1b9037 | 748 | if (ret < 0) |
19d3243e | 749 | return ret; |
db1b9037 CC |
750 | break; |
751 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: | |
752 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: | |
753 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: | |
db1b9037 CC |
754 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
755 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: | |
756 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: | |
db1b9037 | 757 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
db1b9037 | 758 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
db1b9037 CC |
759 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
760 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: | |
db1b9037 CC |
761 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
762 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: | |
763 | case MAX77693_MUIC_ADC_CEA936_AUDIO: | |
764 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: | |
765 | case MAX77693_MUIC_ADC_TTY_CONVERTER: | |
766 | case MAX77693_MUIC_ADC_UART_CABLE: | |
767 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: | |
db1b9037 | 768 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
39bf369e CC |
769 | /* |
770 | * This accessory isn't used in general case if it is specially | |
771 | * needed to detect additional accessory, should implement | |
772 | * proper operation when this accessory is attached/detached. | |
773 | */ | |
db1b9037 CC |
774 | dev_info(info->dev, |
775 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
154f757f | 776 | attached ? "attached" : "detached", cable_type); |
19d3243e | 777 | return -EAGAIN; |
db1b9037 CC |
778 | default: |
779 | dev_err(info->dev, | |
780 | "failed to detect %s accessory (adc:0x%x)\n", | |
154f757f | 781 | attached ? "attached" : "detached", cable_type); |
19d3243e | 782 | return -EINVAL; |
db1b9037 CC |
783 | } |
784 | ||
19d3243e | 785 | return 0; |
db1b9037 CC |
786 | } |
787 | ||
154f757f | 788 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
db1b9037 | 789 | { |
db1b9037 | 790 | int chg_type; |
06bed0af | 791 | int cable_type_gnd; |
39bf369e | 792 | int cable_type; |
154f757f | 793 | bool attached; |
06bed0af | 794 | bool cable_attached; |
154f757f | 795 | int ret = 0; |
db1b9037 | 796 | |
154f757f CC |
797 | chg_type = max77693_muic_get_cable_type(info, |
798 | MAX77693_CABLE_GROUP_CHG, &attached); | |
db1b9037 CC |
799 | |
800 | dev_info(info->dev, | |
801 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
802 | attached ? "attached" : "detached", | |
154f757f | 803 | chg_type, info->prev_chg_type); |
db1b9037 CC |
804 | |
805 | switch (chg_type) { | |
806 | case MAX77693_CHARGER_TYPE_USB: | |
a1626298 | 807 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
0e2738f5 | 808 | case MAX77693_CHARGER_TYPE_NONE: |
a1626298 | 809 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
06bed0af CC |
810 | cable_type_gnd = max77693_muic_get_cable_type(info, |
811 | MAX77693_CABLE_GROUP_ADC_GND, | |
812 | &cable_attached); | |
a1626298 CC |
813 | switch (cable_type_gnd) { |
814 | case MAX77693_MUIC_GND_MHL: | |
815 | case MAX77693_MUIC_GND_MHL_VB: | |
816 | /* | |
817 | * MHL cable with MHL_TA(USB/TA) cable | |
818 | * - MHL cable include two port(HDMI line and separate micro- | |
819 | * usb port. When the target connect MHL cable, extcon driver | |
820 | * check whether MHL_TA(USB/TA) cable is connected. If MHL_TA | |
821 | * cable is connected, extcon driver notify state to notifiee | |
822 | * for charging battery. | |
823 | * | |
824 | * Features of 'MHL_TA(USB/TA) with MHL cable' | |
825 | * - Support MHL | |
826 | * - Support charging through micro-usb port without data connection | |
827 | */ | |
06bed0af | 828 | extcon_set_cable_state(info->edev, "MHL_TA", attached); |
06bed0af | 829 | if (!cable_attached) |
a1626298 CC |
830 | extcon_set_cable_state(info->edev, "MHL", cable_attached); |
831 | break; | |
39bf369e CC |
832 | } |
833 | ||
a1626298 | 834 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
39bf369e CC |
835 | cable_type = max77693_muic_get_cable_type(info, |
836 | MAX77693_CABLE_GROUP_ADC, | |
837 | &cable_attached); | |
a1626298 CC |
838 | switch (cable_type) { |
839 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ | |
840 | /* | |
841 | * Dock-Audio device with USB/TA cable | |
842 | * - Dock device include two port(Dock-Audio and micro-usb | |
843 | * port). When the target connect Dock-Audio device, extcon | |
844 | * driver check whether USB/TA cable is connected. If USB/TA | |
845 | * cable is connected, extcon driver notify state to notifiee | |
846 | * for charging battery. | |
847 | * | |
848 | * Features of 'USB/TA cable with Dock-Audio device' | |
849 | * - Support external output feature of audio. | |
850 | * - Support charging through micro-usb port without data | |
851 | * connection. | |
852 | */ | |
06bed0af | 853 | extcon_set_cable_state(info->edev, "USB", attached); |
39bf369e CC |
854 | |
855 | if (!cable_attached) | |
a1626298 CC |
856 | extcon_set_cable_state(info->edev, "Dock-Audio", cable_attached); |
857 | break; | |
858 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ | |
859 | /* | |
860 | * Dock-Smart device with USB/TA cable | |
861 | * - Dock-Desk device include three type of cable which | |
862 | * are HDMI, USB for mouse/keyboard and micro-usb port | |
863 | * for USB/TA cable. Dock-Smart device need always exteranl | |
864 | * power supply(USB/TA cable through micro-usb cable). Dock- | |
865 | * Smart device support screen output of target to separate | |
866 | * monitor and mouse/keyboard for desktop mode. | |
867 | * | |
868 | * Features of 'USB/TA cable with Dock-Smart device' | |
869 | * - Support MHL | |
870 | * - Support external output feature of audio | |
871 | * - Support charging through micro-usb port without data | |
872 | * connection if TA cable is connected to target. | |
873 | * - Support charging and data connection through micro-usb port | |
874 | * if USB cable is connected between target and host | |
875 | * device. | |
876 | * - Support OTG device (Mouse/Keyboard) | |
877 | */ | |
878 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
879 | if (ret < 0) | |
880 | return ret; | |
881 | ||
882 | extcon_set_cable_state(info->edev, "Dock-Smart", attached); | |
883 | extcon_set_cable_state(info->edev, "MHL", attached); | |
884 | ||
885 | break; | |
06bed0af | 886 | } |
39bf369e | 887 | |
a1626298 CC |
888 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
889 | switch (chg_type) { | |
890 | case MAX77693_CHARGER_TYPE_NONE: | |
891 | /* | |
892 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable | |
893 | * is attached, muic device happen below two interrupt. | |
894 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting MHL/Dock-Audio. | |
895 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting USB/TA cable | |
896 | * connected to MHL or Dock-Audio. | |
897 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC interrupt | |
898 | * than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt. | |
899 | * | |
900 | * If user attach MHL (with USB/TA cable and immediately detach | |
901 | * MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP | |
902 | * interrupt is happened, USB/TA cable remain connected state to | |
903 | * target. But USB/TA cable isn't connected to target. The user | |
904 | * be face with unusual action. So, driver should check this | |
905 | * situation in spite of, that previous charger type is N/A. | |
906 | */ | |
0e2738f5 | 907 | break; |
a1626298 CC |
908 | case MAX77693_CHARGER_TYPE_USB: |
909 | /* Only USB cable, PATH:AP_USB */ | |
910 | ret = max77693_muic_set_path(info, info->path_usb, attached); | |
911 | if (ret < 0) | |
912 | return ret; | |
0e2738f5 | 913 | |
a1626298 CC |
914 | extcon_set_cable_state(info->edev, "USB", attached); |
915 | break; | |
916 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: | |
917 | /* Only TA cable */ | |
918 | extcon_set_cable_state(info->edev, "TA", attached); | |
919 | break; | |
920 | } | |
db1b9037 CC |
921 | break; |
922 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: | |
923 | extcon_set_cable_state(info->edev, | |
924 | "Charge-downstream", attached); | |
925 | break; | |
db1b9037 CC |
926 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
927 | extcon_set_cable_state(info->edev, "Slow-charger", attached); | |
928 | break; | |
929 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: | |
930 | extcon_set_cable_state(info->edev, "Fast-charger", attached); | |
931 | break; | |
932 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: | |
933 | break; | |
934 | default: | |
935 | dev_err(info->dev, | |
936 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
937 | attached ? "attached" : "detached", chg_type); | |
a1626298 | 938 | return -EINVAL; |
db1b9037 CC |
939 | } |
940 | ||
a1626298 | 941 | return 0; |
db1b9037 CC |
942 | } |
943 | ||
944 | static void max77693_muic_irq_work(struct work_struct *work) | |
945 | { | |
946 | struct max77693_muic_info *info = container_of(work, | |
947 | struct max77693_muic_info, irq_work); | |
db1b9037 CC |
948 | int irq_type = -1; |
949 | int i, ret = 0; | |
db1b9037 CC |
950 | |
951 | if (!info->edev) | |
952 | return; | |
953 | ||
954 | mutex_lock(&info->mutex); | |
955 | ||
956 | for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++) | |
957 | if (info->irq == muic_irqs[i].virq) | |
958 | irq_type = muic_irqs[i].irq; | |
959 | ||
960 | ret = max77693_bulk_read(info->max77693->regmap_muic, | |
961 | MAX77693_MUIC_REG_STATUS1, 2, info->status); | |
962 | if (ret) { | |
963 | dev_err(info->dev, "failed to read MUIC register\n"); | |
964 | mutex_unlock(&info->mutex); | |
965 | return; | |
966 | } | |
967 | ||
968 | switch (irq_type) { | |
969 | case MAX77693_MUIC_IRQ_INT1_ADC: | |
970 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: | |
971 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: | |
972 | case MAX77693_MUIC_IRQ_INT1_ADC1K: | |
973 | /* Handle all of accessory except for | |
974 | type of charger accessory */ | |
154f757f | 975 | ret = max77693_muic_adc_handler(info); |
db1b9037 CC |
976 | break; |
977 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: | |
978 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: | |
979 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: | |
980 | case MAX77693_MUIC_IRQ_INT2_DXOVP: | |
981 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: | |
982 | case MAX77693_MUIC_IRQ_INT2_VIDRM: | |
983 | /* Handle charger accessory */ | |
154f757f | 984 | ret = max77693_muic_chg_handler(info); |
db1b9037 CC |
985 | break; |
986 | case MAX77693_MUIC_IRQ_INT3_EOC: | |
987 | case MAX77693_MUIC_IRQ_INT3_CGMBC: | |
988 | case MAX77693_MUIC_IRQ_INT3_OVP: | |
989 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: | |
990 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: | |
991 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: | |
992 | break; | |
993 | default: | |
994 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", | |
995 | irq_type); | |
19d3243e CC |
996 | mutex_unlock(&info->mutex); |
997 | return; | |
db1b9037 CC |
998 | } |
999 | ||
1000 | if (ret < 0) | |
1001 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); | |
1002 | ||
1003 | mutex_unlock(&info->mutex); | |
1004 | ||
1005 | return; | |
1006 | } | |
1007 | ||
1008 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) | |
1009 | { | |
1010 | struct max77693_muic_info *info = data; | |
1011 | ||
1012 | info->irq = irq; | |
1013 | schedule_work(&info->irq_work); | |
1014 | ||
1015 | return IRQ_HANDLED; | |
1016 | } | |
1017 | ||
1018 | static struct regmap_config max77693_muic_regmap_config = { | |
1019 | .reg_bits = 8, | |
1020 | .val_bits = 8, | |
1021 | }; | |
1022 | ||
1023 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) | |
1024 | { | |
1025 | int ret = 0; | |
154f757f CC |
1026 | int adc; |
1027 | int chg_type; | |
1028 | bool attached; | |
db1b9037 CC |
1029 | |
1030 | mutex_lock(&info->mutex); | |
1031 | ||
1032 | /* Read STATUSx register to detect accessory */ | |
1033 | ret = max77693_bulk_read(info->max77693->regmap_muic, | |
1034 | MAX77693_MUIC_REG_STATUS1, 2, info->status); | |
1035 | if (ret) { | |
1036 | dev_err(info->dev, "failed to read MUIC register\n"); | |
1037 | mutex_unlock(&info->mutex); | |
c2536543 | 1038 | return ret; |
db1b9037 CC |
1039 | } |
1040 | ||
154f757f CC |
1041 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
1042 | &attached); | |
1043 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { | |
1044 | ret = max77693_muic_adc_handler(info); | |
19d3243e | 1045 | if (ret < 0) { |
154f757f | 1046 | dev_err(info->dev, "Cannot detect accessory\n"); |
19d3243e CC |
1047 | mutex_unlock(&info->mutex); |
1048 | return ret; | |
1049 | } | |
db1b9037 CC |
1050 | } |
1051 | ||
154f757f CC |
1052 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
1053 | &attached); | |
1054 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { | |
1055 | ret = max77693_muic_chg_handler(info); | |
19d3243e | 1056 | if (ret < 0) { |
154f757f | 1057 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
19d3243e CC |
1058 | mutex_unlock(&info->mutex); |
1059 | return ret; | |
1060 | } | |
db1b9037 CC |
1061 | } |
1062 | ||
db1b9037 | 1063 | mutex_unlock(&info->mutex); |
154f757f | 1064 | |
19d3243e | 1065 | return 0; |
db1b9037 CC |
1066 | } |
1067 | ||
297620fd CC |
1068 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
1069 | { | |
1070 | struct max77693_muic_info *info = container_of(to_delayed_work(work), | |
1071 | struct max77693_muic_info, wq_detcable); | |
1072 | ||
1073 | max77693_muic_detect_accessory(info); | |
1074 | } | |
1075 | ||
44f34fd4 | 1076 | static int max77693_muic_probe(struct platform_device *pdev) |
db1b9037 CC |
1077 | { |
1078 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); | |
f8457d57 | 1079 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
db1b9037 | 1080 | struct max77693_muic_info *info; |
0ec83bd2 CC |
1081 | struct max77693_reg_data *init_data; |
1082 | int num_init_data; | |
297620fd CC |
1083 | int delay_jiffies; |
1084 | int ret; | |
1085 | int i; | |
db1b9037 CC |
1086 | u8 id; |
1087 | ||
f4bb5cb5 SK |
1088 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
1089 | GFP_KERNEL); | |
db1b9037 CC |
1090 | if (!info) { |
1091 | dev_err(&pdev->dev, "failed to allocate memory\n"); | |
f4bb5cb5 | 1092 | return -ENOMEM; |
db1b9037 CC |
1093 | } |
1094 | info->dev = &pdev->dev; | |
1095 | info->max77693 = max77693; | |
1967fa08 | 1096 | if (info->max77693->regmap_muic) { |
b186b124 | 1097 | dev_dbg(&pdev->dev, "allocate register map\n"); |
1967fa08 | 1098 | } else { |
b186b124 CC |
1099 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
1100 | info->max77693->muic, | |
1101 | &max77693_muic_regmap_config); | |
1102 | if (IS_ERR(info->max77693->regmap_muic)) { | |
1103 | ret = PTR_ERR(info->max77693->regmap_muic); | |
1104 | dev_err(max77693->dev, | |
1105 | "failed to allocate register map: %d\n", ret); | |
3bf742ff | 1106 | return ret; |
b186b124 | 1107 | } |
db1b9037 | 1108 | } |
39bf369e CC |
1109 | |
1110 | /* Register input device for button of dock device */ | |
eff7d74f | 1111 | info->dock = devm_input_allocate_device(&pdev->dev); |
39bf369e CC |
1112 | if (!info->dock) { |
1113 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); | |
1114 | return -ENOMEM; | |
1115 | } | |
1116 | info->dock->name = "max77693-muic/dock"; | |
1117 | info->dock->phys = "max77693-muic/extcon"; | |
1118 | info->dock->dev.parent = &pdev->dev; | |
1119 | ||
1120 | __set_bit(EV_REP, info->dock->evbit); | |
1121 | ||
1122 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); | |
1123 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); | |
1124 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); | |
1125 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); | |
1126 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); | |
1127 | ||
1128 | ret = input_register_device(info->dock); | |
1129 | if (ret < 0) { | |
1130 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", | |
1131 | ret); | |
1132 | return ret; | |
1133 | } | |
1134 | ||
db1b9037 CC |
1135 | platform_set_drvdata(pdev, info); |
1136 | mutex_init(&info->mutex); | |
1137 | ||
1138 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); | |
1139 | ||
1140 | /* Support irq domain for MAX77693 MUIC device */ | |
1141 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { | |
1142 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; | |
00af4b16 | 1143 | unsigned int virq = 0; |
db1b9037 CC |
1144 | |
1145 | virq = irq_create_mapping(max77693->irq_domain, muic_irq->irq); | |
00af4b16 SK |
1146 | if (!virq) { |
1147 | ret = -EINVAL; | |
db1b9037 | 1148 | goto err_irq; |
00af4b16 | 1149 | } |
db1b9037 CC |
1150 | muic_irq->virq = virq; |
1151 | ||
1152 | ret = request_threaded_irq(virq, NULL, | |
1153 | max77693_muic_irq_handler, | |
ae3b3215 CC |
1154 | IRQF_NO_SUSPEND, |
1155 | muic_irq->name, info); | |
db1b9037 CC |
1156 | if (ret) { |
1157 | dev_err(&pdev->dev, | |
1158 | "failed: irq request (IRQ: %d," | |
1159 | " error :%d)\n", | |
1160 | muic_irq->irq, ret); | |
db1b9037 CC |
1161 | goto err_irq; |
1162 | } | |
1163 | } | |
1164 | ||
1165 | /* Initialize extcon device */ | |
f4bb5cb5 SK |
1166 | info->edev = devm_kzalloc(&pdev->dev, sizeof(struct extcon_dev), |
1167 | GFP_KERNEL); | |
db1b9037 CC |
1168 | if (!info->edev) { |
1169 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); | |
1170 | ret = -ENOMEM; | |
1171 | goto err_irq; | |
1172 | } | |
1173 | info->edev->name = DEV_NAME; | |
1174 | info->edev->supported_cable = max77693_extcon_cable; | |
1175 | ret = extcon_dev_register(info->edev, NULL); | |
1176 | if (ret) { | |
1177 | dev_err(&pdev->dev, "failed to register extcon device\n"); | |
f4bb5cb5 | 1178 | goto err_irq; |
db1b9037 CC |
1179 | } |
1180 | ||
0ec83bd2 CC |
1181 | |
1182 | /* Initialize MUIC register by using platform data or default data */ | |
190d7cfc | 1183 | if (pdata->muic_data) { |
0ec83bd2 CC |
1184 | init_data = pdata->muic_data->init_data; |
1185 | num_init_data = pdata->muic_data->num_init_data; | |
1186 | } else { | |
1187 | init_data = default_init_data; | |
1188 | num_init_data = ARRAY_SIZE(default_init_data); | |
1189 | } | |
1190 | ||
1191 | for (i = 0 ; i < num_init_data ; i++) { | |
1192 | enum max77693_irq_source irq_src | |
1193 | = MAX77693_IRQ_GROUP_NR; | |
190d7cfc | 1194 | |
0ec83bd2 CC |
1195 | max77693_write_reg(info->max77693->regmap_muic, |
1196 | init_data[i].addr, | |
1197 | init_data[i].data); | |
1198 | ||
1199 | switch (init_data[i].addr) { | |
1200 | case MAX77693_MUIC_REG_INTMASK1: | |
1201 | irq_src = MUIC_INT1; | |
1202 | break; | |
1203 | case MAX77693_MUIC_REG_INTMASK2: | |
1204 | irq_src = MUIC_INT2; | |
1205 | break; | |
1206 | case MAX77693_MUIC_REG_INTMASK3: | |
1207 | irq_src = MUIC_INT3; | |
1208 | break; | |
f8457d57 CC |
1209 | } |
1210 | ||
0ec83bd2 CC |
1211 | if (irq_src < MAX77693_IRQ_GROUP_NR) |
1212 | info->max77693->irq_masks_cur[irq_src] | |
1213 | = init_data[i].data; | |
1214 | } | |
1215 | ||
1216 | if (pdata->muic_data) { | |
1217 | struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; | |
1218 | ||
190d7cfc CC |
1219 | /* |
1220 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB | |
1221 | * h/w path of COMP2/COMN1 on CONTROL1 register. | |
1222 | */ | |
1223 | if (muic_pdata->path_uart) | |
1224 | info->path_uart = muic_pdata->path_uart; | |
1225 | else | |
1226 | info->path_uart = CONTROL1_SW_UART; | |
f8457d57 | 1227 | |
190d7cfc CC |
1228 | if (muic_pdata->path_usb) |
1229 | info->path_usb = muic_pdata->path_usb; | |
1230 | else | |
1231 | info->path_usb = CONTROL1_SW_USB; | |
2b75799f | 1232 | |
190d7cfc CC |
1233 | /* |
1234 | * Default delay time for detecting cable state | |
1235 | * after certain time. | |
1236 | */ | |
1237 | if (muic_pdata->detcable_delay_ms) | |
1238 | delay_jiffies = | |
1239 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); | |
1240 | else | |
1241 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1242 | } else { | |
2b75799f | 1243 | info->path_usb = CONTROL1_SW_USB; |
190d7cfc CC |
1244 | info->path_uart = CONTROL1_SW_UART; |
1245 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); | |
1246 | } | |
2b75799f CC |
1247 | |
1248 | /* Set initial path for UART */ | |
1249 | max77693_muic_set_path(info, info->path_uart, true); | |
1250 | ||
db1b9037 CC |
1251 | /* Check revision number of MUIC device*/ |
1252 | ret = max77693_read_reg(info->max77693->regmap_muic, | |
1253 | MAX77693_MUIC_REG_ID, &id); | |
1254 | if (ret < 0) { | |
1255 | dev_err(&pdev->dev, "failed to read revision number\n"); | |
39bf369e | 1256 | goto err_extcon; |
db1b9037 CC |
1257 | } |
1258 | dev_info(info->dev, "device ID : 0x%x\n", id); | |
1259 | ||
1260 | /* Set ADC debounce time */ | |
1261 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); | |
1262 | ||
297620fd CC |
1263 | /* |
1264 | * Detect accessory after completing the initialization of platform | |
1265 | * | |
1266 | * - Use delayed workqueue to detect cable state and then | |
1267 | * notify cable state to notifiee/platform through uevent. | |
1268 | * After completing the booting of platform, the extcon provider | |
1269 | * driver should notify cable state to upper layer. | |
1270 | */ | |
1271 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); | |
297620fd | 1272 | schedule_delayed_work(&info->wq_detcable, delay_jiffies); |
db1b9037 CC |
1273 | |
1274 | return ret; | |
1275 | ||
39bf369e CC |
1276 | err_extcon: |
1277 | extcon_dev_unregister(info->edev); | |
db1b9037 | 1278 | err_irq: |
00af4b16 SK |
1279 | while (--i >= 0) |
1280 | free_irq(muic_irqs[i].virq, info); | |
db1b9037 CC |
1281 | return ret; |
1282 | } | |
1283 | ||
93ed0327 | 1284 | static int max77693_muic_remove(struct platform_device *pdev) |
db1b9037 CC |
1285 | { |
1286 | struct max77693_muic_info *info = platform_get_drvdata(pdev); | |
1287 | int i; | |
1288 | ||
1289 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) | |
1290 | free_irq(muic_irqs[i].virq, info); | |
1291 | cancel_work_sync(&info->irq_work); | |
39bf369e | 1292 | input_unregister_device(info->dock); |
db1b9037 | 1293 | extcon_dev_unregister(info->edev); |
db1b9037 CC |
1294 | |
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | static struct platform_driver max77693_muic_driver = { | |
1299 | .driver = { | |
1300 | .name = DEV_NAME, | |
1301 | .owner = THIS_MODULE, | |
1302 | }, | |
1303 | .probe = max77693_muic_probe, | |
5f7e2228 | 1304 | .remove = max77693_muic_remove, |
db1b9037 CC |
1305 | }; |
1306 | ||
1307 | module_platform_driver(max77693_muic_driver); | |
1308 | ||
1309 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); | |
1310 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); | |
1311 | MODULE_LICENSE("GPL"); | |
1312 | MODULE_ALIAS("platform:extcon-max77693"); |