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Chanwoo Choidb1b9032012-07-17 13:28:28 +09001/*
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>
Chanwoo Choi39bf3692012-12-03 13:09:41 +090022#include <linux/input.h>
Chanwoo Choidb1b9032012-07-17 13:28:28 +090023#include <linux/interrupt.h>
24#include <linux/err.h>
25#include <linux/platform_device.h>
26#include <linux/mfd/max77693.h>
Krzysztof Kozlowski61b305c2015-07-15 21:59:50 +090027#include <linux/mfd/max77693-common.h>
Chanwoo Choidb1b9032012-07-17 13:28:28 +090028#include <linux/mfd/max77693-private.h>
29#include <linux/extcon.h>
30#include <linux/regmap.h>
31#include <linux/irqdomain.h>
32
33#define DEV_NAME "max77693-muic"
Chanwoo Choi297620f2012-12-26 13:10:11 +090034#define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
Chanwoo Choidb1b9032012-07-17 13:28:28 +090035
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +090036/*
37 * Default value of MAX77693 register to bring up MUIC device.
38 * If user don't set some initial value for MUIC device through platform data,
39 * extcon-max77693 driver use 'default_init_data' to bring up base operation
40 * of MAX77693 MUIC device.
41 */
Sachin Kamat813b4512013-04-08 09:09:41 +090042static struct max77693_reg_data default_init_data[] = {
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +090043 {
44 /* STATUS2 - [3]ChgDetRun */
45 .addr = MAX77693_MUIC_REG_STATUS2,
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +090046 .data = MAX77693_STATUS2_CHGDETRUN_MASK,
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +090047 }, {
48 /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */
49 .addr = MAX77693_MUIC_REG_INTMASK1,
50 .data = INTMASK1_ADC1K_MASK
51 | INTMASK1_ADC_MASK,
52 }, {
53 /* INTMASK2 - Unmask [0]ChgTypM */
54 .addr = MAX77693_MUIC_REG_INTMASK2,
55 .data = INTMASK2_CHGTYP_MASK,
56 }, {
57 /* INTMASK3 - Mask all of interrupts */
58 .addr = MAX77693_MUIC_REG_INTMASK3,
59 .data = 0x0,
60 }, {
61 /* CDETCTRL2 */
62 .addr = MAX77693_MUIC_REG_CDETCTRL2,
63 .data = CDETCTRL2_VIDRMEN_MASK
64 | CDETCTRL2_DXOVPEN_MASK,
65 },
66};
67
Chanwoo Choidb1b9032012-07-17 13:28:28 +090068enum max77693_muic_adc_debounce_time {
69 ADC_DEBOUNCE_TIME_5MS = 0,
70 ADC_DEBOUNCE_TIME_10MS,
71 ADC_DEBOUNCE_TIME_25MS,
72 ADC_DEBOUNCE_TIME_38_62MS,
73};
74
75struct max77693_muic_info {
76 struct device *dev;
77 struct max77693_dev *max77693;
78 struct extcon_dev *edev;
Chanwoo Choi154f757f2012-11-27 09:40:32 +090079 int prev_cable_type;
80 int prev_cable_type_gnd;
Chanwoo Choidb1b9032012-07-17 13:28:28 +090081 int prev_chg_type;
Chanwoo Choi39bf3692012-12-03 13:09:41 +090082 int prev_button_type;
Chanwoo Choidb1b9032012-07-17 13:28:28 +090083 u8 status[2];
84
85 int irq;
86 struct work_struct irq_work;
87 struct mutex mutex;
Chanwoo Choi39bf3692012-12-03 13:09:41 +090088
Chanwoo Choi297620f2012-12-26 13:10:11 +090089 /*
90 * Use delayed workqueue to detect cable state and then
91 * notify cable state to notifiee/platform through uevent.
92 * After completing the booting of platform, the extcon provider
93 * driver should notify cable state to upper layer.
94 */
95 struct delayed_work wq_detcable;
96
Chanwoo Choi39bf3692012-12-03 13:09:41 +090097 /* Button of dock device */
98 struct input_dev *dock;
Chanwoo Choi2b757992012-12-06 21:27:56 +090099
100 /*
101 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
102 * h/w path of COMP2/COMN1 on CONTROL1 register.
103 */
104 int path_usb;
105 int path_uart;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900106};
107
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900108enum max77693_muic_cable_group {
109 MAX77693_CABLE_GROUP_ADC = 0,
110 MAX77693_CABLE_GROUP_ADC_GND,
111 MAX77693_CABLE_GROUP_CHG,
112 MAX77693_CABLE_GROUP_VBVOLT,
113};
114
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900115enum max77693_muic_charger_type {
116 MAX77693_CHARGER_TYPE_NONE = 0,
117 MAX77693_CHARGER_TYPE_USB,
118 MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT,
119 MAX77693_CHARGER_TYPE_DEDICATED_CHG,
120 MAX77693_CHARGER_TYPE_APPLE_500MA,
121 MAX77693_CHARGER_TYPE_APPLE_1A_2A,
122 MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7,
123};
124
125/**
126 * struct max77693_muic_irq
127 * @irq: the index of irq list of MUIC device.
128 * @name: the name of irq.
129 * @virq: the virtual irq to use irq domain
130 */
131struct max77693_muic_irq {
132 unsigned int irq;
133 const char *name;
134 unsigned int virq;
135};
136
137static struct max77693_muic_irq muic_irqs[] = {
138 { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" },
139 { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" },
140 { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" },
141 { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" },
142 { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" },
143 { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" },
144 { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" },
145 { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" },
146 { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" },
147 { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" },
148 { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" },
149 { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" },
150 { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" },
151 { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" },
152 { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" },
153 { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" },
154};
155
156/* Define supported accessory type */
157enum max77693_muic_acc_type {
158 MAX77693_MUIC_ADC_GROUND = 0x0,
159 MAX77693_MUIC_ADC_SEND_END_BUTTON,
160 MAX77693_MUIC_ADC_REMOTE_S1_BUTTON,
161 MAX77693_MUIC_ADC_REMOTE_S2_BUTTON,
162 MAX77693_MUIC_ADC_REMOTE_S3_BUTTON,
163 MAX77693_MUIC_ADC_REMOTE_S4_BUTTON,
164 MAX77693_MUIC_ADC_REMOTE_S5_BUTTON,
165 MAX77693_MUIC_ADC_REMOTE_S6_BUTTON,
166 MAX77693_MUIC_ADC_REMOTE_S7_BUTTON,
167 MAX77693_MUIC_ADC_REMOTE_S8_BUTTON,
168 MAX77693_MUIC_ADC_REMOTE_S9_BUTTON,
169 MAX77693_MUIC_ADC_REMOTE_S10_BUTTON,
170 MAX77693_MUIC_ADC_REMOTE_S11_BUTTON,
171 MAX77693_MUIC_ADC_REMOTE_S12_BUTTON,
172 MAX77693_MUIC_ADC_RESERVED_ACC_1,
173 MAX77693_MUIC_ADC_RESERVED_ACC_2,
174 MAX77693_MUIC_ADC_RESERVED_ACC_3,
175 MAX77693_MUIC_ADC_RESERVED_ACC_4,
176 MAX77693_MUIC_ADC_RESERVED_ACC_5,
177 MAX77693_MUIC_ADC_CEA936_AUDIO,
178 MAX77693_MUIC_ADC_PHONE_POWERED_DEV,
179 MAX77693_MUIC_ADC_TTY_CONVERTER,
180 MAX77693_MUIC_ADC_UART_CABLE,
181 MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG,
182 MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF,
183 MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON,
184 MAX77693_MUIC_ADC_AV_CABLE_NOLOAD,
185 MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG,
186 MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF,
187 MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON,
188 MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE,
189 MAX77693_MUIC_ADC_OPEN,
190
191 /* The below accessories have same ADC value so ADCLow and
192 ADC1K bit is used to separate specific accessory */
Chanwoo Choic2275d22013-08-23 10:21:37 +0900193 /* ADC|VBVolot|ADCLow|ADC1K| */
Jaewon Kim4c883ab2015-01-29 17:45:24 +0900194 MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */
195 MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */
Chanwoo Choic2275d22013-08-23 10:21:37 +0900196 MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */
197 MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */
198 MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900199};
200
Chanwoo Choic2275d22013-08-23 10:21:37 +0900201/*
202 * MAX77693 MUIC device support below list of accessories(external connector)
203 */
Chanwoo Choi73b6ecd2015-06-12 11:10:06 +0900204static const unsigned int max77693_extcon_cable[] = {
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900205 EXTCON_USB,
206 EXTCON_USB_HOST,
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900207 EXTCON_CHG_USB_DCP,
208 EXTCON_CHG_USB_FAST,
209 EXTCON_CHG_USB_SLOW,
210 EXTCON_CHG_USB_CDP,
211 EXTCON_DISP_MHL,
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900212 EXTCON_JIG,
213 EXTCON_DOCK,
214 EXTCON_NONE,
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900215};
216
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900217/*
218 * max77693_muic_set_debounce_time - Set the debounce time of ADC
219 * @info: the instance including private data of max77693 MUIC
220 * @time: the debounce time of ADC
221 */
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900222static int max77693_muic_set_debounce_time(struct max77693_muic_info *info,
223 enum max77693_muic_adc_debounce_time time)
224{
Axel Linbf2627d2012-10-04 09:55:23 +0900225 int ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900226
227 switch (time) {
228 case ADC_DEBOUNCE_TIME_5MS:
229 case ADC_DEBOUNCE_TIME_10MS:
230 case ADC_DEBOUNCE_TIME_25MS:
231 case ADC_DEBOUNCE_TIME_38_62MS:
Jonghwa Leedc6048d2014-09-17 12:58:43 +0900232 /*
233 * Don't touch BTLDset, JIGset when you want to change adc
234 * debounce time. If it writes other than 0 to BTLDset, JIGset
235 * muic device will be reset and loose current state.
236 */
237 ret = regmap_write(info->max77693->regmap_muic,
238 MAX77693_MUIC_REG_CTRL3,
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900239 time << MAX77693_CONTROL3_ADCDBSET_SHIFT);
Chanwoo Choi19d32432013-02-13 18:35:08 +0900240 if (ret) {
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900241 dev_err(info->dev, "failed to set ADC debounce time\n");
Sachin Kamatc2536542013-04-08 09:12:32 +0900242 return ret;
Chanwoo Choi19d32432013-02-13 18:35:08 +0900243 }
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900244 break;
245 default:
246 dev_err(info->dev, "invalid ADC debounce time\n");
Chanwoo Choi19d32432013-02-13 18:35:08 +0900247 return -EINVAL;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900248 }
249
Chanwoo Choi19d32432013-02-13 18:35:08 +0900250 return 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900251};
252
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900253/*
254 * max77693_muic_set_path - Set hardware line according to attached cable
255 * @info: the instance including private data of max77693 MUIC
256 * @value: the path according to attached cable
257 * @attached: the state of cable (true:attached, false:detached)
258 *
259 * The max77693 MUIC device share outside H/W line among a varity of cables
260 * so, this function set internal path of H/W line according to the type of
261 * attached cable.
262 */
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900263static int max77693_muic_set_path(struct max77693_muic_info *info,
264 u8 val, bool attached)
265{
266 int ret = 0;
Robert Baldygad0540f92014-05-21 08:52:47 +0200267 unsigned int ctrl1, ctrl2 = 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900268
269 if (attached)
270 ctrl1 = val;
271 else
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900272 ctrl1 = MAX77693_CONTROL1_SW_OPEN;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900273
Robert Baldygad0540f92014-05-21 08:52:47 +0200274 ret = regmap_update_bits(info->max77693->regmap_muic,
275 MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900276 if (ret < 0) {
277 dev_err(info->dev, "failed to update MUIC register\n");
Sachin Kamatc2536542013-04-08 09:12:32 +0900278 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900279 }
280
281 if (attached)
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900282 ctrl2 |= MAX77693_CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900283 else
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900284 ctrl2 |= MAX77693_CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900285
Robert Baldygad0540f92014-05-21 08:52:47 +0200286 ret = regmap_update_bits(info->max77693->regmap_muic,
287 MAX77693_MUIC_REG_CTRL2,
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900288 MAX77693_CONTROL2_LOWPWR_MASK | MAX77693_CONTROL2_CPEN_MASK,
289 ctrl2);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900290 if (ret < 0) {
291 dev_err(info->dev, "failed to update MUIC register\n");
Sachin Kamatc2536542013-04-08 09:12:32 +0900292 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900293 }
294
295 dev_info(info->dev,
296 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
297 ctrl1, ctrl2, attached ? "attached" : "detached");
Chanwoo Choi19d32432013-02-13 18:35:08 +0900298
299 return 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900300}
301
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900302/*
303 * max77693_muic_get_cable_type - Return cable type and check cable state
304 * @info: the instance including private data of max77693 MUIC
305 * @group: the path according to attached cable
306 * @attached: store cable state and return
307 *
308 * This function check the cable state either attached or detached,
309 * and then divide precise type of cable according to cable group.
310 * - MAX77693_CABLE_GROUP_ADC
311 * - MAX77693_CABLE_GROUP_ADC_GND
312 * - MAX77693_CABLE_GROUP_CHG
313 * - MAX77693_CABLE_GROUP_VBVOLT
314 */
315static int max77693_muic_get_cable_type(struct max77693_muic_info *info,
316 enum max77693_muic_cable_group group, bool *attached)
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900317{
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900318 int cable_type = 0;
319 int adc;
320 int adc1k;
321 int adclow;
322 int vbvolt;
323 int chg_type;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900324
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900325 switch (group) {
326 case MAX77693_CABLE_GROUP_ADC:
327 /*
328 * Read ADC value to check cable type and decide cable state
329 * according to cable type
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900330 */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900331 adc = info->status[0] & MAX77693_STATUS1_ADC_MASK;
332 adc >>= MAX77693_STATUS1_ADC_SHIFT;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900333
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900334 /*
335 * Check current cable state/cable type and store cable type
336 * (info->prev_cable_type) for handling cable when cable is
337 * detached.
338 */
339 if (adc == MAX77693_MUIC_ADC_OPEN) {
340 *attached = false;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900341
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900342 cable_type = info->prev_cable_type;
343 info->prev_cable_type = MAX77693_MUIC_ADC_OPEN;
344 } else {
345 *attached = true;
346
347 cable_type = info->prev_cable_type = adc;
348 }
349 break;
350 case MAX77693_CABLE_GROUP_ADC_GND:
351 /*
352 * Read ADC value to check cable type and decide cable state
353 * according to cable type
354 */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900355 adc = info->status[0] & MAX77693_STATUS1_ADC_MASK;
356 adc >>= MAX77693_STATUS1_ADC_SHIFT;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900357
358 /*
359 * Check current cable state/cable type and store cable type
360 * (info->prev_cable_type/_gnd) for handling cable when cable
361 * is detached.
362 */
363 if (adc == MAX77693_MUIC_ADC_OPEN) {
364 *attached = false;
365
366 cable_type = info->prev_cable_type_gnd;
367 info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN;
368 } else {
369 *attached = true;
370
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900371 adclow = info->status[0] & MAX77693_STATUS1_ADCLOW_MASK;
372 adclow >>= MAX77693_STATUS1_ADCLOW_SHIFT;
373 adc1k = info->status[0] & MAX77693_STATUS1_ADC1K_MASK;
374 adc1k >>= MAX77693_STATUS1_ADC1K_SHIFT;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900375
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900376 vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK;
377 vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900378
379 /**
Chanwoo Choic2275d22013-08-23 10:21:37 +0900380 * [0x1|VBVolt|ADCLow|ADC1K]
Jaewon Kim4c883ab2015-01-29 17:45:24 +0900381 * [0x1| 0| 0| 0] USB_HOST
382 * [0x1| 1| 0| 0] USB_HSOT_VB
Chanwoo Choic2275d22013-08-23 10:21:37 +0900383 * [0x1| 0| 1| 0] Audio Video cable with load
384 * [0x1| 0| 1| 1] MHL without charging cable
385 * [0x1| 1| 1| 1] MHL with charging cable
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900386 */
387 cable_type = ((0x1 << 8)
388 | (vbvolt << 2)
389 | (adclow << 1)
390 | adc1k);
391
392 info->prev_cable_type = adc;
393 info->prev_cable_type_gnd = cable_type;
394 }
395
396 break;
397 case MAX77693_CABLE_GROUP_CHG:
398 /*
399 * Read charger type to check cable type and decide cable state
400 * according to type of charger cable.
401 */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900402 chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK;
403 chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900404
405 if (chg_type == MAX77693_CHARGER_TYPE_NONE) {
406 *attached = false;
407
408 cable_type = info->prev_chg_type;
409 info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE;
410 } else {
411 *attached = true;
412
413 /*
414 * Check current cable state/cable type and store cable
415 * type(info->prev_chg_type) for handling cable when
416 * charger cable is detached.
417 */
418 cable_type = info->prev_chg_type = chg_type;
419 }
420
421 break;
422 case MAX77693_CABLE_GROUP_VBVOLT:
423 /*
424 * Read ADC value to check cable type and decide cable state
425 * according to cable type
426 */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900427 adc = info->status[0] & MAX77693_STATUS1_ADC_MASK;
428 adc >>= MAX77693_STATUS1_ADC_SHIFT;
429 chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK;
430 chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900431
432 if (adc == MAX77693_MUIC_ADC_OPEN
433 && chg_type == MAX77693_CHARGER_TYPE_NONE)
434 *attached = false;
435 else
436 *attached = true;
437
438 /*
439 * Read vbvolt field, if vbvolt is 1,
440 * this cable is used for charging.
441 */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900442 vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK;
443 vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900444
445 cable_type = vbvolt;
446 break;
447 default:
448 dev_err(info->dev, "Unknown cable group (%d)\n", group);
449 cable_type = -EINVAL;
450 break;
451 }
452
453 return cable_type;
454}
455
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900456static int max77693_muic_dock_handler(struct max77693_muic_info *info,
457 int cable_type, bool attached)
458{
459 int ret = 0;
Chanwoo Choia1626292012-12-10 19:07:53 +0900460 int vbvolt;
461 bool cable_attached;
Chanwoo Choi73b6ecd2015-06-12 11:10:06 +0900462 unsigned int dock_id;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900463
464 dev_info(info->dev,
465 "external connector is %s (adc:0x%02x)\n",
466 attached ? "attached" : "detached", cable_type);
467
468 switch (cable_type) {
469 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
Chanwoo Choia1626292012-12-10 19:07:53 +0900470 /*
471 * Check power cable whether attached or detached state.
472 * The Dock-Smart device need surely external power supply.
473 * If power cable(USB/TA) isn't connected to Dock device,
474 * user can't use Dock-Smart for desktop mode.
475 */
476 vbvolt = max77693_muic_get_cable_type(info,
477 MAX77693_CABLE_GROUP_VBVOLT, &cable_attached);
478 if (attached && !vbvolt) {
479 dev_warn(info->dev,
480 "Cannot detect external power supply\n");
481 return 0;
482 }
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900483
Chanwoo Choia1626292012-12-10 19:07:53 +0900484 /*
Chanwoo Choid519c422015-04-25 19:05:10 +0900485 * Notify Dock/MHL state.
486 * - Dock device include three type of cable which
Chanwoo Choia1626292012-12-10 19:07:53 +0900487 * are HDMI, USB for mouse/keyboard and micro-usb port
Chanwoo Choid519c422015-04-25 19:05:10 +0900488 * for USB/TA cable. Dock device need always exteranl
489 * power supply(USB/TA cable through micro-usb cable). Dock
490 * device support screen output of target to separate
Chanwoo Choia1626292012-12-10 19:07:53 +0900491 * monitor and mouse/keyboard for desktop mode.
492 *
Chanwoo Choid519c422015-04-25 19:05:10 +0900493 * Features of 'USB/TA cable with Dock device'
Chanwoo Choia1626292012-12-10 19:07:53 +0900494 * - Support MHL
495 * - Support external output feature of audio
496 * - Support charging through micro-usb port without data
497 * connection if TA cable is connected to target.
498 * - Support charging and data connection through micro-usb port
499 * if USB cable is connected between target and host
500 * device.
Jaewon Kim4c883ab2015-01-29 17:45:24 +0900501 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard)
Chanwoo Choia1626292012-12-10 19:07:53 +0900502 */
503 ret = max77693_muic_set_path(info, info->path_usb, attached);
504 if (ret < 0)
505 return ret;
506
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900507 extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached);
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900508 extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900509 goto out;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900510 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900511 dock_id = EXTCON_DOCK;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900512 break;
513 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900514 dock_id = EXTCON_DOCK;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900515 if (!attached)
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900516 extcon_set_cable_state_(info->edev, EXTCON_USB, false);
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900517 break;
Chanwoo Choi19d32432013-02-13 18:35:08 +0900518 default:
519 dev_err(info->dev, "failed to detect %s dock device\n",
520 attached ? "attached" : "detached");
521 return -EINVAL;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900522 }
523
524 /* Dock-Car/Desk/Audio, PATH:AUDIO */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900525 ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO,
526 attached);
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900527 if (ret < 0)
Chanwoo Choia1626292012-12-10 19:07:53 +0900528 return ret;
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900529 extcon_set_cable_state_(info->edev, dock_id, attached);
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900530
531out:
Chanwoo Choia1626292012-12-10 19:07:53 +0900532 return 0;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900533}
534
535static int max77693_muic_dock_button_handler(struct max77693_muic_info *info,
536 int button_type, bool attached)
537{
538 struct input_dev *dock = info->dock;
539 unsigned int code;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900540
541 switch (button_type) {
542 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1
543 ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1:
544 /* DOCK_KEY_PREV */
545 code = KEY_PREVIOUSSONG;
546 break;
547 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1
548 ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1:
549 /* DOCK_KEY_NEXT */
550 code = KEY_NEXTSONG;
551 break;
552 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON:
553 /* DOCK_VOL_DOWN */
554 code = KEY_VOLUMEDOWN;
555 break;
556 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON:
557 /* DOCK_VOL_UP */
558 code = KEY_VOLUMEUP;
559 break;
560 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1
561 ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1:
562 /* DOCK_KEY_PLAY_PAUSE */
563 code = KEY_PLAYPAUSE;
564 break;
565 default:
566 dev_err(info->dev,
567 "failed to detect %s key (adc:0x%x)\n",
568 attached ? "pressed" : "released", button_type);
Chanwoo Choi19d32432013-02-13 18:35:08 +0900569 return -EINVAL;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900570 }
571
572 input_event(dock, EV_KEY, code, attached);
573 input_sync(dock);
574
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900575 return 0;
576}
577
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900578static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
579{
580 int cable_type_gnd;
581 int ret = 0;
582 bool attached;
583
584 cable_type_gnd = max77693_muic_get_cable_type(info,
585 MAX77693_CABLE_GROUP_ADC_GND, &attached);
586
587 switch (cable_type_gnd) {
Jaewon Kim4c883ab2015-01-29 17:45:24 +0900588 case MAX77693_MUIC_GND_USB_HOST:
589 case MAX77693_MUIC_GND_USB_HOST_VB:
590 /* USB_HOST, PATH: AP_USB */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900591 ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_USB,
592 attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900593 if (ret < 0)
Chanwoo Choi19d32432013-02-13 18:35:08 +0900594 return ret;
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900595 extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900596 break;
597 case MAX77693_MUIC_GND_AV_CABLE_LOAD:
Chanwoo Choi06bed0a2012-11-27 11:30:35 +0900598 /* Audio Video Cable with load, PATH:AUDIO */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900599 ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO,
600 attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900601 if (ret < 0)
Chanwoo Choi19d32432013-02-13 18:35:08 +0900602 return ret;
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900603 extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900604 break;
Chanwoo Choi06bed0a2012-11-27 11:30:35 +0900605 case MAX77693_MUIC_GND_MHL:
606 case MAX77693_MUIC_GND_MHL_VB:
607 /* MHL or MHL with USB/TA cable */
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900608 extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900609 break;
610 default:
Chanwoo Choi19d32432013-02-13 18:35:08 +0900611 dev_err(info->dev, "failed to detect %s cable of gnd type\n",
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900612 attached ? "attached" : "detached");
Chanwoo Choi19d32432013-02-13 18:35:08 +0900613 return -EINVAL;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900614 }
615
Chanwoo Choi19d32432013-02-13 18:35:08 +0900616 return 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900617}
618
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900619static int max77693_muic_jig_handler(struct max77693_muic_info *info,
620 int cable_type, bool attached)
621{
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900622 int ret = 0;
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900623 u8 path = MAX77693_CONTROL1_SW_OPEN;
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900624
625 dev_info(info->dev,
626 "external connector is %s (adc:0x%02x)\n",
627 attached ? "attached" : "detached", cable_type);
628
629 switch (cable_type) {
630 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900631 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */
632 /* PATH:AP_USB */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900633 path = MAX77693_CONTROL1_SW_USB;
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900634 break;
635 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */
Krzysztof Kozlowskic22159a2014-10-22 10:45:40 +0200636 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */
637 /* PATH:AP_UART */
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +0900638 path = MAX77693_CONTROL1_SW_UART;
Krzysztof Kozlowskic22159a2014-10-22 10:45:40 +0200639 break;
Chanwoo Choi19d32432013-02-13 18:35:08 +0900640 default:
641 dev_err(info->dev, "failed to detect %s jig cable\n",
642 attached ? "attached" : "detached");
643 return -EINVAL;
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900644 }
645
646 ret = max77693_muic_set_path(info, path, attached);
647 if (ret < 0)
Chanwoo Choi19d32432013-02-13 18:35:08 +0900648 return ret;
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900649
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900650 extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
Chanwoo Choi19d32432013-02-13 18:35:08 +0900651
652 return 0;
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900653}
654
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900655static int max77693_muic_adc_handler(struct max77693_muic_info *info)
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900656{
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900657 int cable_type;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900658 int button_type;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900659 bool attached;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900660 int ret = 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900661
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900662 /* Check accessory state which is either detached or attached */
663 cable_type = max77693_muic_get_cable_type(info,
664 MAX77693_CABLE_GROUP_ADC, &attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900665
666 dev_info(info->dev,
667 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n",
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900668 attached ? "attached" : "detached", cable_type,
669 info->prev_cable_type);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900670
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900671 switch (cable_type) {
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900672 case MAX77693_MUIC_ADC_GROUND:
Jaewon Kim4c883ab2015-01-29 17:45:24 +0900673 /* USB_HOST/MHL/Audio */
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900674 max77693_muic_adc_ground_handler(info);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900675 break;
676 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF:
677 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900678 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF:
Krzysztof Kozlowskic22159a2014-10-22 10:45:40 +0200679 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900680 /* JIG */
Chanwoo Choid0587eb2012-11-27 12:06:49 +0900681 ret = max77693_muic_jig_handler(info, cable_type, attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900682 if (ret < 0)
Chanwoo Choi19d32432013-02-13 18:35:08 +0900683 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900684 break;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900685 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900686 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
687 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
688 /*
689 * DOCK device
690 *
691 * The MAX77693 MUIC device can detect total 34 cable type
692 * except of charger cable and MUIC device didn't define
693 * specfic role of cable in the range of from 0x01 to 0x12
694 * of ADC value. So, can use/define cable with no role according
695 * to schema of hardware board.
696 */
697 ret = max77693_muic_dock_handler(info, cable_type, attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900698 if (ret < 0)
Chanwoo Choi19d32432013-02-13 18:35:08 +0900699 return ret;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900700 break;
Chanwoo Choic2275d22013-08-23 10:21:37 +0900701 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */
702 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */
703 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */
704 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */
705 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900706 /*
707 * Button of DOCK device
708 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button
709 *
710 * The MAX77693 MUIC device can detect total 34 cable type
711 * except of charger cable and MUIC device didn't define
712 * specfic role of cable in the range of from 0x01 to 0x12
713 * of ADC value. So, can use/define cable with no role according
714 * to schema of hardware board.
715 */
716 if (attached)
717 button_type = info->prev_button_type = cable_type;
718 else
719 button_type = info->prev_button_type;
720
721 ret = max77693_muic_dock_button_handler(info, button_type,
722 attached);
723 if (ret < 0)
Chanwoo Choi19d32432013-02-13 18:35:08 +0900724 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900725 break;
726 case MAX77693_MUIC_ADC_SEND_END_BUTTON:
727 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON:
728 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900729 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON:
730 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON:
731 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900732 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900733 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900734 case MAX77693_MUIC_ADC_RESERVED_ACC_1:
735 case MAX77693_MUIC_ADC_RESERVED_ACC_2:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900736 case MAX77693_MUIC_ADC_RESERVED_ACC_4:
737 case MAX77693_MUIC_ADC_RESERVED_ACC_5:
738 case MAX77693_MUIC_ADC_CEA936_AUDIO:
739 case MAX77693_MUIC_ADC_PHONE_POWERED_DEV:
740 case MAX77693_MUIC_ADC_TTY_CONVERTER:
741 case MAX77693_MUIC_ADC_UART_CABLE:
742 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG:
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900743 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG:
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900744 /*
745 * This accessory isn't used in general case if it is specially
746 * needed to detect additional accessory, should implement
747 * proper operation when this accessory is attached/detached.
748 */
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900749 dev_info(info->dev,
750 "accessory is %s but it isn't used (adc:0x%x)\n",
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900751 attached ? "attached" : "detached", cable_type);
Chanwoo Choi19d32432013-02-13 18:35:08 +0900752 return -EAGAIN;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900753 default:
754 dev_err(info->dev,
755 "failed to detect %s accessory (adc:0x%x)\n",
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900756 attached ? "attached" : "detached", cable_type);
Chanwoo Choi19d32432013-02-13 18:35:08 +0900757 return -EINVAL;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900758 }
759
Chanwoo Choi19d32432013-02-13 18:35:08 +0900760 return 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900761}
762
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900763static int max77693_muic_chg_handler(struct max77693_muic_info *info)
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900764{
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900765 int chg_type;
Chanwoo Choi06bed0a2012-11-27 11:30:35 +0900766 int cable_type_gnd;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900767 int cable_type;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900768 bool attached;
Chanwoo Choi06bed0a2012-11-27 11:30:35 +0900769 bool cable_attached;
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900770 int ret = 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900771
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900772 chg_type = max77693_muic_get_cable_type(info,
773 MAX77693_CABLE_GROUP_CHG, &attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900774
775 dev_info(info->dev,
776 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
777 attached ? "attached" : "detached",
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900778 chg_type, info->prev_chg_type);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900779
780 switch (chg_type) {
781 case MAX77693_CHARGER_TYPE_USB:
Chanwoo Choia1626292012-12-10 19:07:53 +0900782 case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
Chanwoo Choi0e2738f2012-12-06 21:36:18 +0900783 case MAX77693_CHARGER_TYPE_NONE:
Chanwoo Choia1626292012-12-10 19:07:53 +0900784 /* Check MAX77693_CABLE_GROUP_ADC_GND type */
Chanwoo Choi06bed0a2012-11-27 11:30:35 +0900785 cable_type_gnd = max77693_muic_get_cable_type(info,
786 MAX77693_CABLE_GROUP_ADC_GND,
787 &cable_attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900788 switch (cable_type_gnd) {
789 case MAX77693_MUIC_GND_MHL:
790 case MAX77693_MUIC_GND_MHL_VB:
791 /*
Chanwoo Choi942e0232015-04-25 19:06:18 +0900792 * MHL cable with USB/TA cable
Chanwoo Choic2275d22013-08-23 10:21:37 +0900793 * - MHL cable include two port(HDMI line and separate
794 * micro-usb port. When the target connect MHL cable,
Chanwoo Choi942e0232015-04-25 19:06:18 +0900795 * extcon driver check whether USB/TA cable is
796 * connected. If USB/TA cable is connected, extcon
Chanwoo Choic2275d22013-08-23 10:21:37 +0900797 * driver notify state to notifiee for charging battery.
Chanwoo Choia1626292012-12-10 19:07:53 +0900798 *
Chanwoo Choi942e0232015-04-25 19:06:18 +0900799 * Features of 'USB/TA with MHL cable'
Chanwoo Choia1626292012-12-10 19:07:53 +0900800 * - Support MHL
Chanwoo Choic2275d22013-08-23 10:21:37 +0900801 * - Support charging through micro-usb port without
802 * data connection
Chanwoo Choia1626292012-12-10 19:07:53 +0900803 */
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900804 extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
805 attached);
Chanwoo Choi06bed0a2012-11-27 11:30:35 +0900806 if (!cable_attached)
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900807 extcon_set_cable_state_(info->edev,
808 EXTCON_DISP_MHL, cable_attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900809 break;
Chanwoo Choi06bed0a2012-11-27 11:30:35 +0900810 }
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900811
Chanwoo Choia1626292012-12-10 19:07:53 +0900812 /* Check MAX77693_CABLE_GROUP_ADC type */
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900813 cable_type = max77693_muic_get_cable_type(info,
814 MAX77693_CABLE_GROUP_ADC,
815 &cable_attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900816 switch (cable_type) {
817 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
818 /*
819 * Dock-Audio device with USB/TA cable
Chanwoo Choic2275d22013-08-23 10:21:37 +0900820 * - Dock device include two port(Dock-Audio and micro-
821 * usb port). When the target connect Dock-Audio device,
822 * extcon driver check whether USB/TA cable is connected
823 * or not. If USB/TA cable is connected, extcon driver
824 * notify state to notifiee for charging battery.
Chanwoo Choia1626292012-12-10 19:07:53 +0900825 *
826 * Features of 'USB/TA cable with Dock-Audio device'
827 * - Support external output feature of audio.
Chanwoo Choic2275d22013-08-23 10:21:37 +0900828 * - Support charging through micro-usb port without
829 * data connection.
Chanwoo Choia1626292012-12-10 19:07:53 +0900830 */
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900831 extcon_set_cable_state_(info->edev, EXTCON_USB,
832 attached);
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900833
834 if (!cable_attached)
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900835 extcon_set_cable_state_(info->edev, EXTCON_DOCK,
836 cable_attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900837 break;
838 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
839 /*
840 * Dock-Smart device with USB/TA cable
841 * - Dock-Desk device include three type of cable which
842 * are HDMI, USB for mouse/keyboard and micro-usb port
Chanwoo Choic2275d22013-08-23 10:21:37 +0900843 * for USB/TA cable. Dock-Smart device need always
844 * exteranl power supply(USB/TA cable through micro-usb
845 * cable). Dock-Smart device support screen output of
846 * target to separate monitor and mouse/keyboard for
847 * desktop mode.
Chanwoo Choia1626292012-12-10 19:07:53 +0900848 *
849 * Features of 'USB/TA cable with Dock-Smart device'
850 * - Support MHL
851 * - Support external output feature of audio
Chanwoo Choic2275d22013-08-23 10:21:37 +0900852 * - Support charging through micro-usb port without
853 * data connection if TA cable is connected to target.
854 * - Support charging and data connection through micro-
855 * usb port if USB cable is connected between target
856 * and host device
Jaewon Kim4c883ab2015-01-29 17:45:24 +0900857 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard)
Chanwoo Choia1626292012-12-10 19:07:53 +0900858 */
Chanwoo Choic2275d22013-08-23 10:21:37 +0900859 ret = max77693_muic_set_path(info, info->path_usb,
860 attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900861 if (ret < 0)
862 return ret;
863
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900864 extcon_set_cable_state_(info->edev, EXTCON_DOCK,
865 attached);
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900866 extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL,
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900867 attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900868 break;
Chanwoo Choi39bf3692012-12-03 13:09:41 +0900869 }
870
Chanwoo Choia1626292012-12-10 19:07:53 +0900871 /* Check MAX77693_CABLE_GROUP_CHG type */
872 switch (chg_type) {
873 case MAX77693_CHARGER_TYPE_NONE:
874 /*
Chanwoo Choic2275d22013-08-23 10:21:37 +0900875 * When MHL(with USB/TA cable) or Dock-Audio with USB/TA
876 * cable is attached, muic device happen below two irq.
877 * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting
878 * MHL/Dock-Audio.
879 * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting
880 * USB/TA cable connected to MHL or Dock-Audio.
881 * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC
882 * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq.
Chanwoo Choia1626292012-12-10 19:07:53 +0900883 *
Chanwoo Choic2275d22013-08-23 10:21:37 +0900884 * If user attach MHL (with USB/TA cable and immediately
885 * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ
886 * _INT2_CHGTYP irq is happened, USB/TA cable remain
887 * connected state to target. But USB/TA cable isn't
888 * connected to target. The user be face with unusual
889 * action. So, driver should check this situation in
890 * spite of, that previous charger type is N/A.
Chanwoo Choia1626292012-12-10 19:07:53 +0900891 */
Chanwoo Choi0e2738f2012-12-06 21:36:18 +0900892 break;
Chanwoo Choia1626292012-12-10 19:07:53 +0900893 case MAX77693_CHARGER_TYPE_USB:
894 /* Only USB cable, PATH:AP_USB */
Chanwoo Choic2275d22013-08-23 10:21:37 +0900895 ret = max77693_muic_set_path(info, info->path_usb,
896 attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900897 if (ret < 0)
898 return ret;
Chanwoo Choi0e2738f2012-12-06 21:36:18 +0900899
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900900 extcon_set_cable_state_(info->edev, EXTCON_USB,
901 attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900902 break;
903 case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
904 /* Only TA cable */
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900905 extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
906 attached);
Chanwoo Choia1626292012-12-10 19:07:53 +0900907 break;
908 }
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900909 break;
910 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900911 extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900912 attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900913 break;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900914 case MAX77693_CHARGER_TYPE_APPLE_500MA:
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900915 extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900916 attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900917 break;
918 case MAX77693_CHARGER_TYPE_APPLE_1A_2A:
Chanwoo Choi11eecf92015-10-03 14:15:13 +0900919 extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
Chanwoo Choi2a9de9c2015-04-24 19:16:05 +0900920 attached);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900921 break;
922 case MAX77693_CHARGER_TYPE_DEAD_BATTERY:
923 break;
924 default:
925 dev_err(info->dev,
926 "failed to detect %s accessory (chg_type:0x%x)\n",
927 attached ? "attached" : "detached", chg_type);
Chanwoo Choia1626292012-12-10 19:07:53 +0900928 return -EINVAL;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900929 }
930
Chanwoo Choia1626292012-12-10 19:07:53 +0900931 return 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900932}
933
934static void max77693_muic_irq_work(struct work_struct *work)
935{
936 struct max77693_muic_info *info = container_of(work,
937 struct max77693_muic_info, irq_work);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900938 int irq_type = -1;
939 int i, ret = 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900940
941 if (!info->edev)
942 return;
943
944 mutex_lock(&info->mutex);
945
Sachin Kamata33411b2013-08-05 14:32:04 +0530946 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900947 if (info->irq == muic_irqs[i].virq)
948 irq_type = muic_irqs[i].irq;
949
Robert Baldygad0540f92014-05-21 08:52:47 +0200950 ret = regmap_bulk_read(info->max77693->regmap_muic,
951 MAX77693_MUIC_REG_STATUS1, info->status, 2);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900952 if (ret) {
953 dev_err(info->dev, "failed to read MUIC register\n");
954 mutex_unlock(&info->mutex);
955 return;
956 }
957
958 switch (irq_type) {
959 case MAX77693_MUIC_IRQ_INT1_ADC:
960 case MAX77693_MUIC_IRQ_INT1_ADC_LOW:
961 case MAX77693_MUIC_IRQ_INT1_ADC_ERR:
962 case MAX77693_MUIC_IRQ_INT1_ADC1K:
963 /* Handle all of accessory except for
964 type of charger accessory */
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900965 ret = max77693_muic_adc_handler(info);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900966 break;
967 case MAX77693_MUIC_IRQ_INT2_CHGTYP:
968 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN:
969 case MAX77693_MUIC_IRQ_INT2_DCDTMR:
970 case MAX77693_MUIC_IRQ_INT2_DXOVP:
971 case MAX77693_MUIC_IRQ_INT2_VBVOLT:
972 case MAX77693_MUIC_IRQ_INT2_VIDRM:
973 /* Handle charger accessory */
Chanwoo Choi154f757f2012-11-27 09:40:32 +0900974 ret = max77693_muic_chg_handler(info);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900975 break;
976 case MAX77693_MUIC_IRQ_INT3_EOC:
977 case MAX77693_MUIC_IRQ_INT3_CGMBC:
978 case MAX77693_MUIC_IRQ_INT3_OVP:
979 case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR:
980 case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED:
981 case MAX77693_MUIC_IRQ_INT3_BAT_DET:
982 break;
983 default:
984 dev_err(info->dev, "muic interrupt: irq %d occurred\n",
985 irq_type);
Chanwoo Choi19d32432013-02-13 18:35:08 +0900986 mutex_unlock(&info->mutex);
987 return;
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900988 }
989
990 if (ret < 0)
991 dev_err(info->dev, "failed to handle MUIC interrupt\n");
992
993 mutex_unlock(&info->mutex);
Chanwoo Choidb1b9032012-07-17 13:28:28 +0900994}
995
996static irqreturn_t max77693_muic_irq_handler(int irq, void *data)
997{
998 struct max77693_muic_info *info = data;
999
1000 info->irq = irq;
1001 schedule_work(&info->irq_work);
1002
1003 return IRQ_HANDLED;
1004}
1005
Krzysztof Kozlowski65948902015-01-05 09:57:27 +01001006static const struct regmap_config max77693_muic_regmap_config = {
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001007 .reg_bits = 8,
1008 .val_bits = 8,
1009};
1010
1011static int max77693_muic_detect_accessory(struct max77693_muic_info *info)
1012{
1013 int ret = 0;
Chanwoo Choi154f757f2012-11-27 09:40:32 +09001014 int adc;
1015 int chg_type;
1016 bool attached;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001017
1018 mutex_lock(&info->mutex);
1019
1020 /* Read STATUSx register to detect accessory */
Robert Baldygad0540f92014-05-21 08:52:47 +02001021 ret = regmap_bulk_read(info->max77693->regmap_muic,
1022 MAX77693_MUIC_REG_STATUS1, info->status, 2);
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001023 if (ret) {
1024 dev_err(info->dev, "failed to read MUIC register\n");
1025 mutex_unlock(&info->mutex);
Sachin Kamatc2536542013-04-08 09:12:32 +09001026 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001027 }
1028
Chanwoo Choi154f757f2012-11-27 09:40:32 +09001029 adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC,
1030 &attached);
1031 if (attached && adc != MAX77693_MUIC_ADC_OPEN) {
1032 ret = max77693_muic_adc_handler(info);
Chanwoo Choi19d32432013-02-13 18:35:08 +09001033 if (ret < 0) {
Chanwoo Choi154f757f2012-11-27 09:40:32 +09001034 dev_err(info->dev, "Cannot detect accessory\n");
Chanwoo Choi19d32432013-02-13 18:35:08 +09001035 mutex_unlock(&info->mutex);
1036 return ret;
1037 }
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001038 }
1039
Chanwoo Choi154f757f2012-11-27 09:40:32 +09001040 chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG,
1041 &attached);
1042 if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) {
1043 ret = max77693_muic_chg_handler(info);
Chanwoo Choi19d32432013-02-13 18:35:08 +09001044 if (ret < 0) {
Chanwoo Choi154f757f2012-11-27 09:40:32 +09001045 dev_err(info->dev, "Cannot detect charger accessory\n");
Chanwoo Choi19d32432013-02-13 18:35:08 +09001046 mutex_unlock(&info->mutex);
1047 return ret;
1048 }
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001049 }
1050
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001051 mutex_unlock(&info->mutex);
Chanwoo Choi154f757f2012-11-27 09:40:32 +09001052
Chanwoo Choi19d32432013-02-13 18:35:08 +09001053 return 0;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001054}
1055
Chanwoo Choi297620f2012-12-26 13:10:11 +09001056static void max77693_muic_detect_cable_wq(struct work_struct *work)
1057{
1058 struct max77693_muic_info *info = container_of(to_delayed_work(work),
1059 struct max77693_muic_info, wq_detcable);
1060
1061 max77693_muic_detect_accessory(info);
1062}
1063
Bill Pemberton44f34fd2012-11-19 13:23:21 -05001064static int max77693_muic_probe(struct platform_device *pdev)
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001065{
1066 struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
Chanwoo Choif8457d572012-10-08 14:41:49 +09001067 struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev);
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001068 struct max77693_muic_info *info;
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +09001069 struct max77693_reg_data *init_data;
1070 int num_init_data;
Chanwoo Choi297620f2012-12-26 13:10:11 +09001071 int delay_jiffies;
1072 int ret;
1073 int i;
Robert Baldygad0540f92014-05-21 08:52:47 +02001074 unsigned int id;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001075
Sachin Kamatf4bb5cb2012-11-20 15:46:50 +09001076 info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info),
1077 GFP_KERNEL);
Jingoo Han0a16ee62014-07-23 10:07:09 +09001078 if (!info)
Sachin Kamatf4bb5cb2012-11-20 15:46:50 +09001079 return -ENOMEM;
Jingoo Han0a16ee62014-07-23 10:07:09 +09001080
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001081 info->dev = &pdev->dev;
1082 info->max77693 = max77693;
Sachin Kamat1967fa02012-11-21 10:04:58 +05301083 if (info->max77693->regmap_muic) {
Chanwoo Choib186b122012-08-21 15:16:23 +09001084 dev_dbg(&pdev->dev, "allocate register map\n");
Sachin Kamat1967fa02012-11-21 10:04:58 +05301085 } else {
Chanwoo Choib186b122012-08-21 15:16:23 +09001086 info->max77693->regmap_muic = devm_regmap_init_i2c(
Krzysztof Kozlowski61b305c2015-07-15 21:59:50 +09001087 info->max77693->i2c_muic,
Chanwoo Choib186b122012-08-21 15:16:23 +09001088 &max77693_muic_regmap_config);
1089 if (IS_ERR(info->max77693->regmap_muic)) {
1090 ret = PTR_ERR(info->max77693->regmap_muic);
1091 dev_err(max77693->dev,
1092 "failed to allocate register map: %d\n", ret);
Sachin Kamat3bf742f2012-11-21 10:04:57 +05301093 return ret;
Chanwoo Choib186b122012-08-21 15:16:23 +09001094 }
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001095 }
Chanwoo Choi39bf3692012-12-03 13:09:41 +09001096
1097 /* Register input device for button of dock device */
Chanwoo Choieff7d742013-02-13 18:35:05 +09001098 info->dock = devm_input_allocate_device(&pdev->dev);
Chanwoo Choi39bf3692012-12-03 13:09:41 +09001099 if (!info->dock) {
1100 dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__);
1101 return -ENOMEM;
1102 }
1103 info->dock->name = "max77693-muic/dock";
1104 info->dock->phys = "max77693-muic/extcon";
1105 info->dock->dev.parent = &pdev->dev;
1106
1107 __set_bit(EV_REP, info->dock->evbit);
1108
1109 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP);
1110 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN);
1111 input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE);
1112 input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG);
1113 input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG);
1114
1115 ret = input_register_device(info->dock);
1116 if (ret < 0) {
1117 dev_err(&pdev->dev, "Cannot register input device error(%d)\n",
1118 ret);
1119 return ret;
1120 }
1121
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001122 platform_set_drvdata(pdev, info);
1123 mutex_init(&info->mutex);
1124
1125 INIT_WORK(&info->irq_work, max77693_muic_irq_work);
1126
1127 /* Support irq domain for MAX77693 MUIC device */
1128 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
1129 struct max77693_muic_irq *muic_irq = &muic_irqs[i];
Andrzej Hajdacbc46602015-12-14 12:12:42 +01001130 int virq;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001131
Robert Baldyga342d6692014-05-21 08:52:48 +02001132 virq = regmap_irq_get_virq(max77693->irq_data_muic,
1133 muic_irq->irq);
Andrzej Hajdacbc46602015-12-14 12:12:42 +01001134 if (virq <= 0)
Krzysztof Kozlowskid7155232014-09-12 15:16:37 +02001135 return -EINVAL;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001136 muic_irq->virq = virq;
1137
Krzysztof Kozlowskid7155232014-09-12 15:16:37 +02001138 ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001139 max77693_muic_irq_handler,
Chanwoo Choiae3b3212012-11-28 12:39:01 +09001140 IRQF_NO_SUSPEND,
1141 muic_irq->name, info);
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001142 if (ret) {
1143 dev_err(&pdev->dev,
Chanwoo Choi34825e52015-03-07 01:41:36 +09001144 "failed: irq request (IRQ: %d, error :%d)\n",
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001145 muic_irq->irq, ret);
Krzysztof Kozlowskid7155232014-09-12 15:16:37 +02001146 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001147 }
1148 }
1149
1150 /* Initialize extcon device */
Chanwoo Choi577bef12014-04-21 20:39:53 +09001151 info->edev = devm_extcon_dev_allocate(&pdev->dev,
1152 max77693_extcon_cable);
1153 if (IS_ERR(info->edev)) {
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001154 dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
Krzysztof Kozlowskid7155232014-09-12 15:16:37 +02001155 return -ENOMEM;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001156 }
Chanwoo Choi577bef12014-04-21 20:39:53 +09001157
Sangjung Woo10fae112014-04-21 19:10:12 +09001158 ret = devm_extcon_dev_register(&pdev->dev, info->edev);
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001159 if (ret) {
1160 dev_err(&pdev->dev, "failed to register extcon device\n");
Krzysztof Kozlowskid7155232014-09-12 15:16:37 +02001161 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001162 }
1163
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +09001164 /* Initialize MUIC register by using platform data or default data */
Krzysztof Kozlowskid5653f22014-04-09 15:20:12 +02001165 if (pdata && pdata->muic_data) {
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +09001166 init_data = pdata->muic_data->init_data;
1167 num_init_data = pdata->muic_data->num_init_data;
1168 } else {
1169 init_data = default_init_data;
1170 num_init_data = ARRAY_SIZE(default_init_data);
1171 }
1172
Sachin Kamata33411b2013-08-05 14:32:04 +05301173 for (i = 0; i < num_init_data; i++) {
Robert Baldygad0540f92014-05-21 08:52:47 +02001174 regmap_write(info->max77693->regmap_muic,
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +09001175 init_data[i].addr,
1176 init_data[i].data);
Chanwoo Choi0ec83bd2013-03-13 17:38:57 +09001177 }
1178
Krzysztof Kozlowskid5653f22014-04-09 15:20:12 +02001179 if (pdata && pdata->muic_data) {
Chanwoo Choic2275d22013-08-23 10:21:37 +09001180 struct max77693_muic_platform_data *muic_pdata
1181 = pdata->muic_data;
Chanwoo Choif8457d572012-10-08 14:41:49 +09001182
Chanwoo Choi190d7cf2013-02-18 10:03:32 +09001183 /*
1184 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
1185 * h/w path of COMP2/COMN1 on CONTROL1 register.
1186 */
1187 if (muic_pdata->path_uart)
1188 info->path_uart = muic_pdata->path_uart;
1189 else
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +09001190 info->path_uart = MAX77693_CONTROL1_SW_UART;
Chanwoo Choif8457d572012-10-08 14:41:49 +09001191
Chanwoo Choi190d7cf2013-02-18 10:03:32 +09001192 if (muic_pdata->path_usb)
1193 info->path_usb = muic_pdata->path_usb;
1194 else
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +09001195 info->path_usb = MAX77693_CONTROL1_SW_USB;
Chanwoo Choi2b757992012-12-06 21:27:56 +09001196
Chanwoo Choi190d7cf2013-02-18 10:03:32 +09001197 /*
1198 * Default delay time for detecting cable state
1199 * after certain time.
1200 */
1201 if (muic_pdata->detcable_delay_ms)
1202 delay_jiffies =
1203 msecs_to_jiffies(muic_pdata->detcable_delay_ms);
1204 else
1205 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
1206 } else {
Krzysztof Kozlowskicceb4332015-07-15 21:59:52 +09001207 info->path_usb = MAX77693_CONTROL1_SW_USB;
1208 info->path_uart = MAX77693_CONTROL1_SW_UART;
Chanwoo Choi190d7cf2013-02-18 10:03:32 +09001209 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
1210 }
Chanwoo Choi2b757992012-12-06 21:27:56 +09001211
1212 /* Set initial path for UART */
1213 max77693_muic_set_path(info, info->path_uart, true);
1214
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001215 /* Check revision number of MUIC device*/
Robert Baldygad0540f92014-05-21 08:52:47 +02001216 ret = regmap_read(info->max77693->regmap_muic,
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001217 MAX77693_MUIC_REG_ID, &id);
1218 if (ret < 0) {
1219 dev_err(&pdev->dev, "failed to read revision number\n");
Krzysztof Kozlowskid7155232014-09-12 15:16:37 +02001220 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001221 }
1222 dev_info(info->dev, "device ID : 0x%x\n", id);
1223
1224 /* Set ADC debounce time */
1225 max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);
1226
Chanwoo Choi297620f2012-12-26 13:10:11 +09001227 /*
1228 * Detect accessory after completing the initialization of platform
1229 *
1230 * - Use delayed workqueue to detect cable state and then
1231 * notify cable state to notifiee/platform through uevent.
1232 * After completing the booting of platform, the extcon provider
1233 * driver should notify cable state to upper layer.
1234 */
1235 INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq);
Krzysztof Kozlowskib8629412014-04-09 15:20:13 +02001236 queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
1237 delay_jiffies);
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001238
1239 return ret;
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001240}
1241
Bill Pemberton93ed0322012-11-19 13:25:49 -05001242static int max77693_muic_remove(struct platform_device *pdev)
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001243{
1244 struct max77693_muic_info *info = platform_get_drvdata(pdev);
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001245
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001246 cancel_work_sync(&info->irq_work);
Chanwoo Choi39bf3692012-12-03 13:09:41 +09001247 input_unregister_device(info->dock);
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001248
1249 return 0;
1250}
1251
1252static struct platform_driver max77693_muic_driver = {
1253 .driver = {
1254 .name = DEV_NAME,
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001255 },
1256 .probe = max77693_muic_probe,
Bill Pemberton5f7e2222012-11-19 13:20:06 -05001257 .remove = max77693_muic_remove,
Chanwoo Choidb1b9032012-07-17 13:28:28 +09001258};
1259
1260module_platform_driver(max77693_muic_driver);
1261
1262MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver");
1263MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
1264MODULE_LICENSE("GPL");
1265MODULE_ALIAS("platform:extcon-max77693");