Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 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> |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 22 | #include <linux/input.h> |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 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" |
Chanwoo Choi | 297620f | 2012-12-26 13:10:11 +0900 | [diff] [blame] | 33 | #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 34 | |
Chanwoo Choi | 0ec83bd | 2013-03-13 17:38:57 +0900 | [diff] [blame] | 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 | */ |
Sachin Kamat | 813b451 | 2013-04-08 09:09:41 +0900 | [diff] [blame] | 41 | static struct max77693_reg_data default_init_data[] = { |
Chanwoo Choi | 0ec83bd | 2013-03-13 17:38:57 +0900 | [diff] [blame] | 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 | |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 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; |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 78 | int prev_cable_type; |
| 79 | int prev_cable_type_gnd; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 80 | int prev_chg_type; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 81 | int prev_button_type; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 82 | u8 status[2]; |
| 83 | |
| 84 | int irq; |
| 85 | struct work_struct irq_work; |
| 86 | struct mutex mutex; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 87 | |
Chanwoo Choi | 297620f | 2012-12-26 13:10:11 +0900 | [diff] [blame] | 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 | |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 96 | /* Button of dock device */ |
| 97 | struct input_dev *dock; |
Chanwoo Choi | 2b75799 | 2012-12-06 21:27:56 +0900 | [diff] [blame] | 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; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 105 | }; |
| 106 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 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 | |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 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 */ |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 192 | /* ADC|VBVolot|ADCLow|ADC1K| */ |
| 193 | MAX77693_MUIC_GND_USB_OTG = 0x100, /* 0x0| 0| 0| 0| */ |
| 194 | MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* 0x0| 1| 0| 0| */ |
| 195 | MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ |
| 196 | MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ |
| 197 | MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 198 | }; |
| 199 | |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 200 | /* |
| 201 | * MAX77693 MUIC device support below list of accessories(external connector) |
| 202 | */ |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 203 | enum { |
| 204 | EXTCON_CABLE_USB = 0, |
| 205 | EXTCON_CABLE_USB_HOST, |
| 206 | EXTCON_CABLE_TA, |
| 207 | EXTCON_CABLE_FAST_CHARGER, |
| 208 | EXTCON_CABLE_SLOW_CHARGER, |
| 209 | EXTCON_CABLE_CHARGE_DOWNSTREAM, |
| 210 | EXTCON_CABLE_MHL, |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 211 | EXTCON_CABLE_MHL_TA, |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 212 | EXTCON_CABLE_JIG_USB_ON, |
| 213 | EXTCON_CABLE_JIG_USB_OFF, |
| 214 | EXTCON_CABLE_JIG_UART_OFF, |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 215 | EXTCON_CABLE_JIG_UART_ON, |
| 216 | EXTCON_CABLE_DOCK_SMART, |
| 217 | EXTCON_CABLE_DOCK_DESK, |
| 218 | EXTCON_CABLE_DOCK_AUDIO, |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 219 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 220 | _EXTCON_CABLE_NUM, |
| 221 | }; |
| 222 | |
Sachin Kamat | 45d4a4e | 2013-01-31 09:31:47 +0900 | [diff] [blame] | 223 | static const char *max77693_extcon_cable[] = { |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 224 | [EXTCON_CABLE_USB] = "USB", |
| 225 | [EXTCON_CABLE_USB_HOST] = "USB-Host", |
| 226 | [EXTCON_CABLE_TA] = "TA", |
| 227 | [EXTCON_CABLE_FAST_CHARGER] = "Fast-charger", |
| 228 | [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger", |
| 229 | [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream", |
| 230 | [EXTCON_CABLE_MHL] = "MHL", |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 231 | [EXTCON_CABLE_MHL_TA] = "MHL_TA", |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 232 | [EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON", |
| 233 | [EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF", |
| 234 | [EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF", |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 235 | [EXTCON_CABLE_JIG_UART_ON] = "Dock-Car", |
| 236 | [EXTCON_CABLE_DOCK_SMART] = "Dock-Smart", |
| 237 | [EXTCON_CABLE_DOCK_DESK] = "Dock-Desk", |
| 238 | [EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio", |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 239 | |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 240 | NULL, |
| 241 | }; |
| 242 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 243 | /* |
| 244 | * max77693_muic_set_debounce_time - Set the debounce time of ADC |
| 245 | * @info: the instance including private data of max77693 MUIC |
| 246 | * @time: the debounce time of ADC |
| 247 | */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 248 | static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
| 249 | enum max77693_muic_adc_debounce_time time) |
| 250 | { |
Axel Lin | bf2627d | 2012-10-04 09:55:23 +0900 | [diff] [blame] | 251 | int ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 252 | |
| 253 | switch (time) { |
| 254 | case ADC_DEBOUNCE_TIME_5MS: |
| 255 | case ADC_DEBOUNCE_TIME_10MS: |
| 256 | case ADC_DEBOUNCE_TIME_25MS: |
| 257 | case ADC_DEBOUNCE_TIME_38_62MS: |
Axel Lin | bf2627d | 2012-10-04 09:55:23 +0900 | [diff] [blame] | 258 | ret = max77693_update_reg(info->max77693->regmap_muic, |
| 259 | MAX77693_MUIC_REG_CTRL3, |
| 260 | time << CONTROL3_ADCDBSET_SHIFT, |
| 261 | CONTROL3_ADCDBSET_MASK); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 262 | if (ret) { |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 263 | dev_err(info->dev, "failed to set ADC debounce time\n"); |
Sachin Kamat | c253654 | 2013-04-08 09:12:32 +0900 | [diff] [blame] | 264 | return ret; |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 265 | } |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 266 | break; |
| 267 | default: |
| 268 | dev_err(info->dev, "invalid ADC debounce time\n"); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 269 | return -EINVAL; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 270 | } |
| 271 | |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 272 | return 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 273 | }; |
| 274 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 275 | /* |
| 276 | * max77693_muic_set_path - Set hardware line according to attached cable |
| 277 | * @info: the instance including private data of max77693 MUIC |
| 278 | * @value: the path according to attached cable |
| 279 | * @attached: the state of cable (true:attached, false:detached) |
| 280 | * |
| 281 | * The max77693 MUIC device share outside H/W line among a varity of cables |
| 282 | * so, this function set internal path of H/W line according to the type of |
| 283 | * attached cable. |
| 284 | */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 285 | static int max77693_muic_set_path(struct max77693_muic_info *info, |
| 286 | u8 val, bool attached) |
| 287 | { |
| 288 | int ret = 0; |
| 289 | u8 ctrl1, ctrl2 = 0; |
| 290 | |
| 291 | if (attached) |
| 292 | ctrl1 = val; |
| 293 | else |
| 294 | ctrl1 = CONTROL1_SW_OPEN; |
| 295 | |
| 296 | ret = max77693_update_reg(info->max77693->regmap_muic, |
| 297 | MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK); |
| 298 | if (ret < 0) { |
| 299 | dev_err(info->dev, "failed to update MUIC register\n"); |
Sachin Kamat | c253654 | 2013-04-08 09:12:32 +0900 | [diff] [blame] | 300 | return ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | if (attached) |
| 304 | ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ |
| 305 | else |
| 306 | ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ |
| 307 | |
| 308 | ret = max77693_update_reg(info->max77693->regmap_muic, |
| 309 | MAX77693_MUIC_REG_CTRL2, ctrl2, |
| 310 | CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); |
| 311 | if (ret < 0) { |
| 312 | dev_err(info->dev, "failed to update MUIC register\n"); |
Sachin Kamat | c253654 | 2013-04-08 09:12:32 +0900 | [diff] [blame] | 313 | return ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | dev_info(info->dev, |
| 317 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", |
| 318 | ctrl1, ctrl2, attached ? "attached" : "detached"); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 319 | |
| 320 | return 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 321 | } |
| 322 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 323 | /* |
| 324 | * max77693_muic_get_cable_type - Return cable type and check cable state |
| 325 | * @info: the instance including private data of max77693 MUIC |
| 326 | * @group: the path according to attached cable |
| 327 | * @attached: store cable state and return |
| 328 | * |
| 329 | * This function check the cable state either attached or detached, |
| 330 | * and then divide precise type of cable according to cable group. |
| 331 | * - MAX77693_CABLE_GROUP_ADC |
| 332 | * - MAX77693_CABLE_GROUP_ADC_GND |
| 333 | * - MAX77693_CABLE_GROUP_CHG |
| 334 | * - MAX77693_CABLE_GROUP_VBVOLT |
| 335 | */ |
| 336 | static int max77693_muic_get_cable_type(struct max77693_muic_info *info, |
| 337 | enum max77693_muic_cable_group group, bool *attached) |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 338 | { |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 339 | int cable_type = 0; |
| 340 | int adc; |
| 341 | int adc1k; |
| 342 | int adclow; |
| 343 | int vbvolt; |
| 344 | int chg_type; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 345 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 346 | switch (group) { |
| 347 | case MAX77693_CABLE_GROUP_ADC: |
| 348 | /* |
| 349 | * Read ADC value to check cable type and decide cable state |
| 350 | * according to cable type |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 351 | */ |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 352 | adc = info->status[0] & STATUS1_ADC_MASK; |
| 353 | adc >>= STATUS1_ADC_SHIFT; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 354 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 355 | /* |
| 356 | * Check current cable state/cable type and store cable type |
| 357 | * (info->prev_cable_type) for handling cable when cable is |
| 358 | * detached. |
| 359 | */ |
| 360 | if (adc == MAX77693_MUIC_ADC_OPEN) { |
| 361 | *attached = false; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 362 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 363 | cable_type = info->prev_cable_type; |
| 364 | info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; |
| 365 | } else { |
| 366 | *attached = true; |
| 367 | |
| 368 | cable_type = info->prev_cable_type = adc; |
| 369 | } |
| 370 | break; |
| 371 | case MAX77693_CABLE_GROUP_ADC_GND: |
| 372 | /* |
| 373 | * Read ADC value to check cable type and decide cable state |
| 374 | * according to cable type |
| 375 | */ |
| 376 | adc = info->status[0] & STATUS1_ADC_MASK; |
| 377 | adc >>= STATUS1_ADC_SHIFT; |
| 378 | |
| 379 | /* |
| 380 | * Check current cable state/cable type and store cable type |
| 381 | * (info->prev_cable_type/_gnd) for handling cable when cable |
| 382 | * is detached. |
| 383 | */ |
| 384 | if (adc == MAX77693_MUIC_ADC_OPEN) { |
| 385 | *attached = false; |
| 386 | |
| 387 | cable_type = info->prev_cable_type_gnd; |
| 388 | info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; |
| 389 | } else { |
| 390 | *attached = true; |
| 391 | |
| 392 | adclow = info->status[0] & STATUS1_ADCLOW_MASK; |
| 393 | adclow >>= STATUS1_ADCLOW_SHIFT; |
| 394 | adc1k = info->status[0] & STATUS1_ADC1K_MASK; |
| 395 | adc1k >>= STATUS1_ADC1K_SHIFT; |
| 396 | |
| 397 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
| 398 | vbvolt >>= STATUS2_VBVOLT_SHIFT; |
| 399 | |
| 400 | /** |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 401 | * [0x1|VBVolt|ADCLow|ADC1K] |
| 402 | * [0x1| 0| 0| 0] USB_OTG |
| 403 | * [0x1| 1| 0| 0] USB_OTG_VB |
| 404 | * [0x1| 0| 1| 0] Audio Video cable with load |
| 405 | * [0x1| 0| 1| 1] MHL without charging cable |
| 406 | * [0x1| 1| 1| 1] MHL with charging cable |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 407 | */ |
| 408 | cable_type = ((0x1 << 8) |
| 409 | | (vbvolt << 2) |
| 410 | | (adclow << 1) |
| 411 | | adc1k); |
| 412 | |
| 413 | info->prev_cable_type = adc; |
| 414 | info->prev_cable_type_gnd = cable_type; |
| 415 | } |
| 416 | |
| 417 | break; |
| 418 | case MAX77693_CABLE_GROUP_CHG: |
| 419 | /* |
| 420 | * Read charger type to check cable type and decide cable state |
| 421 | * according to type of charger cable. |
| 422 | */ |
| 423 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; |
| 424 | chg_type >>= STATUS2_CHGTYP_SHIFT; |
| 425 | |
| 426 | if (chg_type == MAX77693_CHARGER_TYPE_NONE) { |
| 427 | *attached = false; |
| 428 | |
| 429 | cable_type = info->prev_chg_type; |
| 430 | info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; |
| 431 | } else { |
| 432 | *attached = true; |
| 433 | |
| 434 | /* |
| 435 | * Check current cable state/cable type and store cable |
| 436 | * type(info->prev_chg_type) for handling cable when |
| 437 | * charger cable is detached. |
| 438 | */ |
| 439 | cable_type = info->prev_chg_type = chg_type; |
| 440 | } |
| 441 | |
| 442 | break; |
| 443 | case MAX77693_CABLE_GROUP_VBVOLT: |
| 444 | /* |
| 445 | * Read ADC value to check cable type and decide cable state |
| 446 | * according to cable type |
| 447 | */ |
| 448 | adc = info->status[0] & STATUS1_ADC_MASK; |
| 449 | adc >>= STATUS1_ADC_SHIFT; |
| 450 | chg_type = info->status[1] & STATUS2_CHGTYP_MASK; |
| 451 | chg_type >>= STATUS2_CHGTYP_SHIFT; |
| 452 | |
| 453 | if (adc == MAX77693_MUIC_ADC_OPEN |
| 454 | && chg_type == MAX77693_CHARGER_TYPE_NONE) |
| 455 | *attached = false; |
| 456 | else |
| 457 | *attached = true; |
| 458 | |
| 459 | /* |
| 460 | * Read vbvolt field, if vbvolt is 1, |
| 461 | * this cable is used for charging. |
| 462 | */ |
| 463 | vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
| 464 | vbvolt >>= STATUS2_VBVOLT_SHIFT; |
| 465 | |
| 466 | cable_type = vbvolt; |
| 467 | break; |
| 468 | default: |
| 469 | dev_err(info->dev, "Unknown cable group (%d)\n", group); |
| 470 | cable_type = -EINVAL; |
| 471 | break; |
| 472 | } |
| 473 | |
| 474 | return cable_type; |
| 475 | } |
| 476 | |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 477 | static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
| 478 | int cable_type, bool attached) |
| 479 | { |
| 480 | int ret = 0; |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 481 | int vbvolt; |
| 482 | bool cable_attached; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 483 | char dock_name[CABLE_NAME_MAX]; |
| 484 | |
| 485 | dev_info(info->dev, |
| 486 | "external connector is %s (adc:0x%02x)\n", |
| 487 | attached ? "attached" : "detached", cable_type); |
| 488 | |
| 489 | switch (cable_type) { |
| 490 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 491 | /* |
| 492 | * Check power cable whether attached or detached state. |
| 493 | * The Dock-Smart device need surely external power supply. |
| 494 | * If power cable(USB/TA) isn't connected to Dock device, |
| 495 | * user can't use Dock-Smart for desktop mode. |
| 496 | */ |
| 497 | vbvolt = max77693_muic_get_cable_type(info, |
| 498 | MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); |
| 499 | if (attached && !vbvolt) { |
| 500 | dev_warn(info->dev, |
| 501 | "Cannot detect external power supply\n"); |
| 502 | return 0; |
| 503 | } |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 504 | |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 505 | /* |
| 506 | * Notify Dock-Smart/MHL state. |
| 507 | * - Dock-Smart device include three type of cable which |
| 508 | * are HDMI, USB for mouse/keyboard and micro-usb port |
| 509 | * for USB/TA cable. Dock-Smart device need always exteranl |
| 510 | * power supply(USB/TA cable through micro-usb cable). Dock- |
| 511 | * Smart device support screen output of target to separate |
| 512 | * monitor and mouse/keyboard for desktop mode. |
| 513 | * |
| 514 | * Features of 'USB/TA cable with Dock-Smart device' |
| 515 | * - Support MHL |
| 516 | * - Support external output feature of audio |
| 517 | * - Support charging through micro-usb port without data |
| 518 | * connection if TA cable is connected to target. |
| 519 | * - Support charging and data connection through micro-usb port |
| 520 | * if USB cable is connected between target and host |
| 521 | * device. |
| 522 | * - Support OTG device (Mouse/Keyboard) |
| 523 | */ |
| 524 | ret = max77693_muic_set_path(info, info->path_usb, attached); |
| 525 | if (ret < 0) |
| 526 | return ret; |
| 527 | |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 528 | extcon_set_cable_state(info->edev, "Dock-Smart", attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 529 | extcon_set_cable_state(info->edev, "MHL", attached); |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 530 | goto out; |
| 531 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ |
| 532 | strcpy(dock_name, "Dock-Car"); |
| 533 | break; |
| 534 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
| 535 | strcpy(dock_name, "Dock-Desk"); |
| 536 | break; |
| 537 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ |
| 538 | strcpy(dock_name, "Dock-Audio"); |
| 539 | if (!attached) |
| 540 | extcon_set_cable_state(info->edev, "USB", false); |
| 541 | break; |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 542 | default: |
| 543 | dev_err(info->dev, "failed to detect %s dock device\n", |
| 544 | attached ? "attached" : "detached"); |
| 545 | return -EINVAL; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | /* Dock-Car/Desk/Audio, PATH:AUDIO */ |
| 549 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
| 550 | if (ret < 0) |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 551 | return ret; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 552 | extcon_set_cable_state(info->edev, dock_name, attached); |
| 553 | |
| 554 | out: |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 555 | return 0; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, |
| 559 | int button_type, bool attached) |
| 560 | { |
| 561 | struct input_dev *dock = info->dock; |
| 562 | unsigned int code; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 563 | |
| 564 | switch (button_type) { |
| 565 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 |
| 566 | ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: |
| 567 | /* DOCK_KEY_PREV */ |
| 568 | code = KEY_PREVIOUSSONG; |
| 569 | break; |
| 570 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 |
| 571 | ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: |
| 572 | /* DOCK_KEY_NEXT */ |
| 573 | code = KEY_NEXTSONG; |
| 574 | break; |
| 575 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: |
| 576 | /* DOCK_VOL_DOWN */ |
| 577 | code = KEY_VOLUMEDOWN; |
| 578 | break; |
| 579 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: |
| 580 | /* DOCK_VOL_UP */ |
| 581 | code = KEY_VOLUMEUP; |
| 582 | break; |
| 583 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 |
| 584 | ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: |
| 585 | /* DOCK_KEY_PLAY_PAUSE */ |
| 586 | code = KEY_PLAYPAUSE; |
| 587 | break; |
| 588 | default: |
| 589 | dev_err(info->dev, |
| 590 | "failed to detect %s key (adc:0x%x)\n", |
| 591 | attached ? "pressed" : "released", button_type); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 592 | return -EINVAL; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | input_event(dock, EV_KEY, code, attached); |
| 596 | input_sync(dock); |
| 597 | |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 598 | return 0; |
| 599 | } |
| 600 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 601 | static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
| 602 | { |
| 603 | int cable_type_gnd; |
| 604 | int ret = 0; |
| 605 | bool attached; |
| 606 | |
| 607 | cable_type_gnd = max77693_muic_get_cable_type(info, |
| 608 | MAX77693_CABLE_GROUP_ADC_GND, &attached); |
| 609 | |
| 610 | switch (cable_type_gnd) { |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 611 | case MAX77693_MUIC_GND_USB_OTG: |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 612 | case MAX77693_MUIC_GND_USB_OTG_VB: |
| 613 | /* USB_OTG, PATH: AP_USB */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 614 | ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
| 615 | if (ret < 0) |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 616 | return ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 617 | extcon_set_cable_state(info->edev, "USB-Host", attached); |
| 618 | break; |
| 619 | case MAX77693_MUIC_GND_AV_CABLE_LOAD: |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 620 | /* Audio Video Cable with load, PATH:AUDIO */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 621 | ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
| 622 | if (ret < 0) |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 623 | return ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 624 | extcon_set_cable_state(info->edev, |
| 625 | "Audio-video-load", attached); |
| 626 | break; |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 627 | case MAX77693_MUIC_GND_MHL: |
| 628 | case MAX77693_MUIC_GND_MHL_VB: |
| 629 | /* MHL or MHL with USB/TA cable */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 630 | extcon_set_cable_state(info->edev, "MHL", attached); |
| 631 | break; |
| 632 | default: |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 633 | dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 634 | attached ? "attached" : "detached"); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 635 | return -EINVAL; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 636 | } |
| 637 | |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 638 | return 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 639 | } |
| 640 | |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 641 | static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
| 642 | int cable_type, bool attached) |
| 643 | { |
| 644 | char cable_name[32]; |
| 645 | int ret = 0; |
| 646 | u8 path = CONTROL1_SW_OPEN; |
| 647 | |
| 648 | dev_info(info->dev, |
| 649 | "external connector is %s (adc:0x%02x)\n", |
| 650 | attached ? "attached" : "detached", cable_type); |
| 651 | |
| 652 | switch (cable_type) { |
| 653 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ |
| 654 | /* PATH:AP_USB */ |
| 655 | strcpy(cable_name, "JIG-USB-OFF"); |
| 656 | path = CONTROL1_SW_USB; |
| 657 | break; |
| 658 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ |
| 659 | /* PATH:AP_USB */ |
| 660 | strcpy(cable_name, "JIG-USB-ON"); |
| 661 | path = CONTROL1_SW_USB; |
| 662 | break; |
| 663 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ |
| 664 | /* PATH:AP_UART */ |
| 665 | strcpy(cable_name, "JIG-UART-OFF"); |
| 666 | path = CONTROL1_SW_UART; |
| 667 | break; |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 668 | default: |
| 669 | dev_err(info->dev, "failed to detect %s jig cable\n", |
| 670 | attached ? "attached" : "detached"); |
| 671 | return -EINVAL; |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | ret = max77693_muic_set_path(info, path, attached); |
| 675 | if (ret < 0) |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 676 | return ret; |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 677 | |
| 678 | extcon_set_cable_state(info->edev, cable_name, attached); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 679 | |
| 680 | return 0; |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 681 | } |
| 682 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 683 | static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 684 | { |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 685 | int cable_type; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 686 | int button_type; |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 687 | bool attached; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 688 | int ret = 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 689 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 690 | /* Check accessory state which is either detached or attached */ |
| 691 | cable_type = max77693_muic_get_cable_type(info, |
| 692 | MAX77693_CABLE_GROUP_ADC, &attached); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 693 | |
| 694 | dev_info(info->dev, |
| 695 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 696 | attached ? "attached" : "detached", cable_type, |
| 697 | info->prev_cable_type); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 698 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 699 | switch (cable_type) { |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 700 | case MAX77693_MUIC_ADC_GROUND: |
| 701 | /* USB_OTG/MHL/Audio */ |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 702 | max77693_muic_adc_ground_handler(info); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 703 | break; |
| 704 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: |
| 705 | case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 706 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 707 | /* JIG */ |
Chanwoo Choi | d0587eb | 2012-11-27 12:06:49 +0900 | [diff] [blame] | 708 | ret = max77693_muic_jig_handler(info, cable_type, attached); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 709 | if (ret < 0) |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 710 | return ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 711 | break; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 712 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
| 713 | case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ |
| 714 | case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
| 715 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ |
| 716 | /* |
| 717 | * DOCK device |
| 718 | * |
| 719 | * The MAX77693 MUIC device can detect total 34 cable type |
| 720 | * except of charger cable and MUIC device didn't define |
| 721 | * specfic role of cable in the range of from 0x01 to 0x12 |
| 722 | * of ADC value. So, can use/define cable with no role according |
| 723 | * to schema of hardware board. |
| 724 | */ |
| 725 | ret = max77693_muic_dock_handler(info, cable_type, attached); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 726 | if (ret < 0) |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 727 | return ret; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 728 | break; |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 729 | case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
| 730 | case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ |
| 731 | case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ |
| 732 | case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ |
| 733 | case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 734 | /* |
| 735 | * Button of DOCK device |
| 736 | * - the Prev/Next/Volume Up/Volume Down/Play-Pause button |
| 737 | * |
| 738 | * The MAX77693 MUIC device can detect total 34 cable type |
| 739 | * except of charger cable and MUIC device didn't define |
| 740 | * specfic role of cable in the range of from 0x01 to 0x12 |
| 741 | * of ADC value. So, can use/define cable with no role according |
| 742 | * to schema of hardware board. |
| 743 | */ |
| 744 | if (attached) |
| 745 | button_type = info->prev_button_type = cable_type; |
| 746 | else |
| 747 | button_type = info->prev_button_type; |
| 748 | |
| 749 | ret = max77693_muic_dock_button_handler(info, button_type, |
| 750 | attached); |
| 751 | if (ret < 0) |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 752 | return ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 753 | break; |
| 754 | case MAX77693_MUIC_ADC_SEND_END_BUTTON: |
| 755 | case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: |
| 756 | case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 757 | case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
| 758 | case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: |
| 759 | case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 760 | case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 761 | case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 762 | case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
| 763 | case MAX77693_MUIC_ADC_RESERVED_ACC_2: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 764 | case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
| 765 | case MAX77693_MUIC_ADC_RESERVED_ACC_5: |
| 766 | case MAX77693_MUIC_ADC_CEA936_AUDIO: |
| 767 | case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: |
| 768 | case MAX77693_MUIC_ADC_TTY_CONVERTER: |
| 769 | case MAX77693_MUIC_ADC_UART_CABLE: |
| 770 | case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 771 | case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 772 | /* |
| 773 | * This accessory isn't used in general case if it is specially |
| 774 | * needed to detect additional accessory, should implement |
| 775 | * proper operation when this accessory is attached/detached. |
| 776 | */ |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 777 | dev_info(info->dev, |
| 778 | "accessory is %s but it isn't used (adc:0x%x)\n", |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 779 | attached ? "attached" : "detached", cable_type); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 780 | return -EAGAIN; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 781 | default: |
| 782 | dev_err(info->dev, |
| 783 | "failed to detect %s accessory (adc:0x%x)\n", |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 784 | attached ? "attached" : "detached", cable_type); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 785 | return -EINVAL; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 786 | } |
| 787 | |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 788 | return 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 789 | } |
| 790 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 791 | static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 792 | { |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 793 | int chg_type; |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 794 | int cable_type_gnd; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 795 | int cable_type; |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 796 | bool attached; |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 797 | bool cable_attached; |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 798 | int ret = 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 799 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 800 | chg_type = max77693_muic_get_cable_type(info, |
| 801 | MAX77693_CABLE_GROUP_CHG, &attached); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 802 | |
| 803 | dev_info(info->dev, |
| 804 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", |
| 805 | attached ? "attached" : "detached", |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 806 | chg_type, info->prev_chg_type); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 807 | |
| 808 | switch (chg_type) { |
| 809 | case MAX77693_CHARGER_TYPE_USB: |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 810 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
Chanwoo Choi | 0e2738f | 2012-12-06 21:36:18 +0900 | [diff] [blame] | 811 | case MAX77693_CHARGER_TYPE_NONE: |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 812 | /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 813 | cable_type_gnd = max77693_muic_get_cable_type(info, |
| 814 | MAX77693_CABLE_GROUP_ADC_GND, |
| 815 | &cable_attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 816 | switch (cable_type_gnd) { |
| 817 | case MAX77693_MUIC_GND_MHL: |
| 818 | case MAX77693_MUIC_GND_MHL_VB: |
| 819 | /* |
| 820 | * MHL cable with MHL_TA(USB/TA) cable |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 821 | * - MHL cable include two port(HDMI line and separate |
| 822 | * micro-usb port. When the target connect MHL cable, |
| 823 | * extcon driver check whether MHL_TA(USB/TA) cable is |
| 824 | * connected. If MHL_TA cable is connected, extcon |
| 825 | * driver notify state to notifiee for charging battery. |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 826 | * |
| 827 | * Features of 'MHL_TA(USB/TA) with MHL cable' |
| 828 | * - Support MHL |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 829 | * - Support charging through micro-usb port without |
| 830 | * data connection |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 831 | */ |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 832 | extcon_set_cable_state(info->edev, "MHL_TA", attached); |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 833 | if (!cable_attached) |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 834 | extcon_set_cable_state(info->edev, |
| 835 | "MHL", cable_attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 836 | break; |
Chanwoo Choi | 06bed0a | 2012-11-27 11:30:35 +0900 | [diff] [blame] | 837 | } |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 838 | |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 839 | /* Check MAX77693_CABLE_GROUP_ADC type */ |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 840 | cable_type = max77693_muic_get_cable_type(info, |
| 841 | MAX77693_CABLE_GROUP_ADC, |
| 842 | &cable_attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 843 | switch (cable_type) { |
| 844 | case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ |
| 845 | /* |
| 846 | * Dock-Audio device with USB/TA cable |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 847 | * - Dock device include two port(Dock-Audio and micro- |
| 848 | * usb port). When the target connect Dock-Audio device, |
| 849 | * extcon driver check whether USB/TA cable is connected |
| 850 | * or not. If USB/TA cable is connected, extcon driver |
| 851 | * notify state to notifiee for charging battery. |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 852 | * |
| 853 | * Features of 'USB/TA cable with Dock-Audio device' |
| 854 | * - Support external output feature of audio. |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 855 | * - Support charging through micro-usb port without |
| 856 | * data connection. |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 857 | */ |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 858 | extcon_set_cable_state(info->edev, "USB", attached); |
| 859 | |
| 860 | if (!cable_attached) |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 861 | extcon_set_cable_state(info->edev, "Dock-Audio", |
| 862 | cable_attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 863 | break; |
| 864 | case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
| 865 | /* |
| 866 | * Dock-Smart device with USB/TA cable |
| 867 | * - Dock-Desk device include three type of cable which |
| 868 | * are HDMI, USB for mouse/keyboard and micro-usb port |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 869 | * for USB/TA cable. Dock-Smart device need always |
| 870 | * exteranl power supply(USB/TA cable through micro-usb |
| 871 | * cable). Dock-Smart device support screen output of |
| 872 | * target to separate monitor and mouse/keyboard for |
| 873 | * desktop mode. |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 874 | * |
| 875 | * Features of 'USB/TA cable with Dock-Smart device' |
| 876 | * - Support MHL |
| 877 | * - Support external output feature of audio |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 878 | * - Support charging through micro-usb port without |
| 879 | * data connection if TA cable is connected to target. |
| 880 | * - Support charging and data connection through micro- |
| 881 | * usb port if USB cable is connected between target |
| 882 | * and host device |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 883 | * - Support OTG device (Mouse/Keyboard) |
| 884 | */ |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 885 | ret = max77693_muic_set_path(info, info->path_usb, |
| 886 | attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 887 | if (ret < 0) |
| 888 | return ret; |
| 889 | |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 890 | extcon_set_cable_state(info->edev, "Dock-Smart", |
| 891 | attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 892 | extcon_set_cable_state(info->edev, "MHL", attached); |
| 893 | |
| 894 | break; |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 895 | } |
| 896 | |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 897 | /* Check MAX77693_CABLE_GROUP_CHG type */ |
| 898 | switch (chg_type) { |
| 899 | case MAX77693_CHARGER_TYPE_NONE: |
| 900 | /* |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 901 | * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
| 902 | * cable is attached, muic device happen below two irq. |
| 903 | * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting |
| 904 | * MHL/Dock-Audio. |
| 905 | * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting |
| 906 | * USB/TA cable connected to MHL or Dock-Audio. |
| 907 | * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC |
| 908 | * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 909 | * |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 910 | * If user attach MHL (with USB/TA cable and immediately |
| 911 | * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ |
| 912 | * _INT2_CHGTYP irq is happened, USB/TA cable remain |
| 913 | * connected state to target. But USB/TA cable isn't |
| 914 | * connected to target. The user be face with unusual |
| 915 | * action. So, driver should check this situation in |
| 916 | * spite of, that previous charger type is N/A. |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 917 | */ |
Chanwoo Choi | 0e2738f | 2012-12-06 21:36:18 +0900 | [diff] [blame] | 918 | break; |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 919 | case MAX77693_CHARGER_TYPE_USB: |
| 920 | /* Only USB cable, PATH:AP_USB */ |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 921 | ret = max77693_muic_set_path(info, info->path_usb, |
| 922 | attached); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 923 | if (ret < 0) |
| 924 | return ret; |
Chanwoo Choi | 0e2738f | 2012-12-06 21:36:18 +0900 | [diff] [blame] | 925 | |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 926 | extcon_set_cable_state(info->edev, "USB", attached); |
| 927 | break; |
| 928 | case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
| 929 | /* Only TA cable */ |
| 930 | extcon_set_cable_state(info->edev, "TA", attached); |
| 931 | break; |
| 932 | } |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 933 | break; |
| 934 | case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: |
| 935 | extcon_set_cable_state(info->edev, |
| 936 | "Charge-downstream", attached); |
| 937 | break; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 938 | case MAX77693_CHARGER_TYPE_APPLE_500MA: |
| 939 | extcon_set_cable_state(info->edev, "Slow-charger", attached); |
| 940 | break; |
| 941 | case MAX77693_CHARGER_TYPE_APPLE_1A_2A: |
| 942 | extcon_set_cable_state(info->edev, "Fast-charger", attached); |
| 943 | break; |
| 944 | case MAX77693_CHARGER_TYPE_DEAD_BATTERY: |
| 945 | break; |
| 946 | default: |
| 947 | dev_err(info->dev, |
| 948 | "failed to detect %s accessory (chg_type:0x%x)\n", |
| 949 | attached ? "attached" : "detached", chg_type); |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 950 | return -EINVAL; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 951 | } |
| 952 | |
Chanwoo Choi | a162629 | 2012-12-10 19:07:53 +0900 | [diff] [blame] | 953 | return 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 954 | } |
| 955 | |
| 956 | static void max77693_muic_irq_work(struct work_struct *work) |
| 957 | { |
| 958 | struct max77693_muic_info *info = container_of(work, |
| 959 | struct max77693_muic_info, irq_work); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 960 | int irq_type = -1; |
| 961 | int i, ret = 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 962 | |
| 963 | if (!info->edev) |
| 964 | return; |
| 965 | |
| 966 | mutex_lock(&info->mutex); |
| 967 | |
Sachin Kamat | a33411b | 2013-08-05 14:32:04 +0530 | [diff] [blame] | 968 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 969 | if (info->irq == muic_irqs[i].virq) |
| 970 | irq_type = muic_irqs[i].irq; |
| 971 | |
| 972 | ret = max77693_bulk_read(info->max77693->regmap_muic, |
| 973 | MAX77693_MUIC_REG_STATUS1, 2, info->status); |
| 974 | if (ret) { |
| 975 | dev_err(info->dev, "failed to read MUIC register\n"); |
| 976 | mutex_unlock(&info->mutex); |
| 977 | return; |
| 978 | } |
| 979 | |
| 980 | switch (irq_type) { |
| 981 | case MAX77693_MUIC_IRQ_INT1_ADC: |
| 982 | case MAX77693_MUIC_IRQ_INT1_ADC_LOW: |
| 983 | case MAX77693_MUIC_IRQ_INT1_ADC_ERR: |
| 984 | case MAX77693_MUIC_IRQ_INT1_ADC1K: |
| 985 | /* Handle all of accessory except for |
| 986 | type of charger accessory */ |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 987 | ret = max77693_muic_adc_handler(info); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 988 | break; |
| 989 | case MAX77693_MUIC_IRQ_INT2_CHGTYP: |
| 990 | case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: |
| 991 | case MAX77693_MUIC_IRQ_INT2_DCDTMR: |
| 992 | case MAX77693_MUIC_IRQ_INT2_DXOVP: |
| 993 | case MAX77693_MUIC_IRQ_INT2_VBVOLT: |
| 994 | case MAX77693_MUIC_IRQ_INT2_VIDRM: |
| 995 | /* Handle charger accessory */ |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 996 | ret = max77693_muic_chg_handler(info); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 997 | break; |
| 998 | case MAX77693_MUIC_IRQ_INT3_EOC: |
| 999 | case MAX77693_MUIC_IRQ_INT3_CGMBC: |
| 1000 | case MAX77693_MUIC_IRQ_INT3_OVP: |
| 1001 | case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: |
| 1002 | case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: |
| 1003 | case MAX77693_MUIC_IRQ_INT3_BAT_DET: |
| 1004 | break; |
| 1005 | default: |
| 1006 | dev_err(info->dev, "muic interrupt: irq %d occurred\n", |
| 1007 | irq_type); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 1008 | mutex_unlock(&info->mutex); |
| 1009 | return; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1010 | } |
| 1011 | |
| 1012 | if (ret < 0) |
| 1013 | dev_err(info->dev, "failed to handle MUIC interrupt\n"); |
| 1014 | |
| 1015 | mutex_unlock(&info->mutex); |
| 1016 | |
| 1017 | return; |
| 1018 | } |
| 1019 | |
| 1020 | static irqreturn_t max77693_muic_irq_handler(int irq, void *data) |
| 1021 | { |
| 1022 | struct max77693_muic_info *info = data; |
| 1023 | |
| 1024 | info->irq = irq; |
| 1025 | schedule_work(&info->irq_work); |
| 1026 | |
| 1027 | return IRQ_HANDLED; |
| 1028 | } |
| 1029 | |
| 1030 | static struct regmap_config max77693_muic_regmap_config = { |
| 1031 | .reg_bits = 8, |
| 1032 | .val_bits = 8, |
| 1033 | }; |
| 1034 | |
| 1035 | static int max77693_muic_detect_accessory(struct max77693_muic_info *info) |
| 1036 | { |
| 1037 | int ret = 0; |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 1038 | int adc; |
| 1039 | int chg_type; |
| 1040 | bool attached; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1041 | |
| 1042 | mutex_lock(&info->mutex); |
| 1043 | |
| 1044 | /* Read STATUSx register to detect accessory */ |
| 1045 | ret = max77693_bulk_read(info->max77693->regmap_muic, |
| 1046 | MAX77693_MUIC_REG_STATUS1, 2, info->status); |
| 1047 | if (ret) { |
| 1048 | dev_err(info->dev, "failed to read MUIC register\n"); |
| 1049 | mutex_unlock(&info->mutex); |
Sachin Kamat | c253654 | 2013-04-08 09:12:32 +0900 | [diff] [blame] | 1050 | return ret; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1051 | } |
| 1052 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 1053 | adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
| 1054 | &attached); |
| 1055 | if (attached && adc != MAX77693_MUIC_ADC_OPEN) { |
| 1056 | ret = max77693_muic_adc_handler(info); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 1057 | if (ret < 0) { |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 1058 | dev_err(info->dev, "Cannot detect accessory\n"); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 1059 | mutex_unlock(&info->mutex); |
| 1060 | return ret; |
| 1061 | } |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1062 | } |
| 1063 | |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 1064 | chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
| 1065 | &attached); |
| 1066 | if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { |
| 1067 | ret = max77693_muic_chg_handler(info); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 1068 | if (ret < 0) { |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 1069 | dev_err(info->dev, "Cannot detect charger accessory\n"); |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 1070 | mutex_unlock(&info->mutex); |
| 1071 | return ret; |
| 1072 | } |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1073 | } |
| 1074 | |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1075 | mutex_unlock(&info->mutex); |
Chanwoo Choi | 154f757f | 2012-11-27 09:40:32 +0900 | [diff] [blame] | 1076 | |
Chanwoo Choi | 19d3243 | 2013-02-13 18:35:08 +0900 | [diff] [blame] | 1077 | return 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1078 | } |
| 1079 | |
Chanwoo Choi | 297620f | 2012-12-26 13:10:11 +0900 | [diff] [blame] | 1080 | static void max77693_muic_detect_cable_wq(struct work_struct *work) |
| 1081 | { |
| 1082 | struct max77693_muic_info *info = container_of(to_delayed_work(work), |
| 1083 | struct max77693_muic_info, wq_detcable); |
| 1084 | |
| 1085 | max77693_muic_detect_accessory(info); |
| 1086 | } |
| 1087 | |
Bill Pemberton | 44f34fd | 2012-11-19 13:23:21 -0500 | [diff] [blame] | 1088 | static int max77693_muic_probe(struct platform_device *pdev) |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1089 | { |
| 1090 | struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); |
Chanwoo Choi | f8457d57 | 2012-10-08 14:41:49 +0900 | [diff] [blame] | 1091 | struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1092 | struct max77693_muic_info *info; |
Chanwoo Choi | 0ec83bd | 2013-03-13 17:38:57 +0900 | [diff] [blame] | 1093 | struct max77693_reg_data *init_data; |
| 1094 | int num_init_data; |
Chanwoo Choi | 297620f | 2012-12-26 13:10:11 +0900 | [diff] [blame] | 1095 | int delay_jiffies; |
| 1096 | int ret; |
| 1097 | int i; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1098 | u8 id; |
| 1099 | |
Sachin Kamat | f4bb5cb | 2012-11-20 15:46:50 +0900 | [diff] [blame] | 1100 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
| 1101 | GFP_KERNEL); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1102 | if (!info) { |
| 1103 | dev_err(&pdev->dev, "failed to allocate memory\n"); |
Sachin Kamat | f4bb5cb | 2012-11-20 15:46:50 +0900 | [diff] [blame] | 1104 | return -ENOMEM; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1105 | } |
| 1106 | info->dev = &pdev->dev; |
| 1107 | info->max77693 = max77693; |
Sachin Kamat | 1967fa0 | 2012-11-21 10:04:58 +0530 | [diff] [blame] | 1108 | if (info->max77693->regmap_muic) { |
Chanwoo Choi | b186b12 | 2012-08-21 15:16:23 +0900 | [diff] [blame] | 1109 | dev_dbg(&pdev->dev, "allocate register map\n"); |
Sachin Kamat | 1967fa0 | 2012-11-21 10:04:58 +0530 | [diff] [blame] | 1110 | } else { |
Chanwoo Choi | b186b12 | 2012-08-21 15:16:23 +0900 | [diff] [blame] | 1111 | info->max77693->regmap_muic = devm_regmap_init_i2c( |
| 1112 | info->max77693->muic, |
| 1113 | &max77693_muic_regmap_config); |
| 1114 | if (IS_ERR(info->max77693->regmap_muic)) { |
| 1115 | ret = PTR_ERR(info->max77693->regmap_muic); |
| 1116 | dev_err(max77693->dev, |
| 1117 | "failed to allocate register map: %d\n", ret); |
Sachin Kamat | 3bf742f | 2012-11-21 10:04:57 +0530 | [diff] [blame] | 1118 | return ret; |
Chanwoo Choi | b186b12 | 2012-08-21 15:16:23 +0900 | [diff] [blame] | 1119 | } |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1120 | } |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 1121 | |
| 1122 | /* Register input device for button of dock device */ |
Chanwoo Choi | eff7d74 | 2013-02-13 18:35:05 +0900 | [diff] [blame] | 1123 | info->dock = devm_input_allocate_device(&pdev->dev); |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 1124 | if (!info->dock) { |
| 1125 | dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); |
| 1126 | return -ENOMEM; |
| 1127 | } |
| 1128 | info->dock->name = "max77693-muic/dock"; |
| 1129 | info->dock->phys = "max77693-muic/extcon"; |
| 1130 | info->dock->dev.parent = &pdev->dev; |
| 1131 | |
| 1132 | __set_bit(EV_REP, info->dock->evbit); |
| 1133 | |
| 1134 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); |
| 1135 | input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); |
| 1136 | input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); |
| 1137 | input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); |
| 1138 | input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); |
| 1139 | |
| 1140 | ret = input_register_device(info->dock); |
| 1141 | if (ret < 0) { |
| 1142 | dev_err(&pdev->dev, "Cannot register input device error(%d)\n", |
| 1143 | ret); |
| 1144 | return ret; |
| 1145 | } |
| 1146 | |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1147 | platform_set_drvdata(pdev, info); |
| 1148 | mutex_init(&info->mutex); |
| 1149 | |
| 1150 | INIT_WORK(&info->irq_work, max77693_muic_irq_work); |
| 1151 | |
| 1152 | /* Support irq domain for MAX77693 MUIC device */ |
| 1153 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { |
| 1154 | struct max77693_muic_irq *muic_irq = &muic_irqs[i]; |
Sachin Kamat | 00af4b1 | 2012-11-20 15:46:44 +0900 | [diff] [blame] | 1155 | unsigned int virq = 0; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1156 | |
| 1157 | virq = irq_create_mapping(max77693->irq_domain, muic_irq->irq); |
Sachin Kamat | 00af4b1 | 2012-11-20 15:46:44 +0900 | [diff] [blame] | 1158 | if (!virq) { |
| 1159 | ret = -EINVAL; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1160 | goto err_irq; |
Sachin Kamat | 00af4b1 | 2012-11-20 15:46:44 +0900 | [diff] [blame] | 1161 | } |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1162 | muic_irq->virq = virq; |
| 1163 | |
| 1164 | ret = request_threaded_irq(virq, NULL, |
| 1165 | max77693_muic_irq_handler, |
Chanwoo Choi | ae3b321 | 2012-11-28 12:39:01 +0900 | [diff] [blame] | 1166 | IRQF_NO_SUSPEND, |
| 1167 | muic_irq->name, info); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1168 | if (ret) { |
| 1169 | dev_err(&pdev->dev, |
| 1170 | "failed: irq request (IRQ: %d," |
| 1171 | " error :%d)\n", |
| 1172 | muic_irq->irq, ret); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1173 | goto err_irq; |
| 1174 | } |
| 1175 | } |
| 1176 | |
| 1177 | /* Initialize extcon device */ |
Chanwoo Choi | 577bef1 | 2014-04-21 20:39:53 +0900 | [diff] [blame] | 1178 | info->edev = devm_extcon_dev_allocate(&pdev->dev, |
| 1179 | max77693_extcon_cable); |
| 1180 | if (IS_ERR(info->edev)) { |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1181 | dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
| 1182 | ret = -ENOMEM; |
| 1183 | goto err_irq; |
| 1184 | } |
| 1185 | info->edev->name = DEV_NAME; |
Chanwoo Choi | 42d7d75 | 2013-09-27 09:20:26 +0900 | [diff] [blame] | 1186 | info->edev->dev.parent = &pdev->dev; |
Chanwoo Choi | 577bef1 | 2014-04-21 20:39:53 +0900 | [diff] [blame] | 1187 | |
Sangjung Woo | 10fae11 | 2014-04-21 19:10:12 +0900 | [diff] [blame] | 1188 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1189 | if (ret) { |
| 1190 | dev_err(&pdev->dev, "failed to register extcon device\n"); |
Sachin Kamat | f4bb5cb | 2012-11-20 15:46:50 +0900 | [diff] [blame] | 1191 | goto err_irq; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1192 | } |
| 1193 | |
Chanwoo Choi | 0ec83bd | 2013-03-13 17:38:57 +0900 | [diff] [blame] | 1194 | /* Initialize MUIC register by using platform data or default data */ |
Krzysztof Kozlowski | d5653f2 | 2014-04-09 15:20:12 +0200 | [diff] [blame] | 1195 | if (pdata && pdata->muic_data) { |
Chanwoo Choi | 0ec83bd | 2013-03-13 17:38:57 +0900 | [diff] [blame] | 1196 | init_data = pdata->muic_data->init_data; |
| 1197 | num_init_data = pdata->muic_data->num_init_data; |
| 1198 | } else { |
| 1199 | init_data = default_init_data; |
| 1200 | num_init_data = ARRAY_SIZE(default_init_data); |
| 1201 | } |
| 1202 | |
Sachin Kamat | a33411b | 2013-08-05 14:32:04 +0530 | [diff] [blame] | 1203 | for (i = 0; i < num_init_data; i++) { |
Chanwoo Choi | 0ec83bd | 2013-03-13 17:38:57 +0900 | [diff] [blame] | 1204 | enum max77693_irq_source irq_src |
| 1205 | = MAX77693_IRQ_GROUP_NR; |
| 1206 | |
| 1207 | max77693_write_reg(info->max77693->regmap_muic, |
| 1208 | init_data[i].addr, |
| 1209 | init_data[i].data); |
| 1210 | |
| 1211 | switch (init_data[i].addr) { |
| 1212 | case MAX77693_MUIC_REG_INTMASK1: |
| 1213 | irq_src = MUIC_INT1; |
| 1214 | break; |
| 1215 | case MAX77693_MUIC_REG_INTMASK2: |
| 1216 | irq_src = MUIC_INT2; |
| 1217 | break; |
| 1218 | case MAX77693_MUIC_REG_INTMASK3: |
| 1219 | irq_src = MUIC_INT3; |
| 1220 | break; |
| 1221 | } |
| 1222 | |
| 1223 | if (irq_src < MAX77693_IRQ_GROUP_NR) |
| 1224 | info->max77693->irq_masks_cur[irq_src] |
| 1225 | = init_data[i].data; |
| 1226 | } |
| 1227 | |
Krzysztof Kozlowski | d5653f2 | 2014-04-09 15:20:12 +0200 | [diff] [blame] | 1228 | if (pdata && pdata->muic_data) { |
Chanwoo Choi | c2275d2 | 2013-08-23 10:21:37 +0900 | [diff] [blame] | 1229 | struct max77693_muic_platform_data *muic_pdata |
| 1230 | = pdata->muic_data; |
Chanwoo Choi | f8457d57 | 2012-10-08 14:41:49 +0900 | [diff] [blame] | 1231 | |
Chanwoo Choi | 190d7cf | 2013-02-18 10:03:32 +0900 | [diff] [blame] | 1232 | /* |
| 1233 | * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB |
| 1234 | * h/w path of COMP2/COMN1 on CONTROL1 register. |
| 1235 | */ |
| 1236 | if (muic_pdata->path_uart) |
| 1237 | info->path_uart = muic_pdata->path_uart; |
| 1238 | else |
| 1239 | info->path_uart = CONTROL1_SW_UART; |
Chanwoo Choi | f8457d57 | 2012-10-08 14:41:49 +0900 | [diff] [blame] | 1240 | |
Chanwoo Choi | 190d7cf | 2013-02-18 10:03:32 +0900 | [diff] [blame] | 1241 | if (muic_pdata->path_usb) |
| 1242 | info->path_usb = muic_pdata->path_usb; |
| 1243 | else |
| 1244 | info->path_usb = CONTROL1_SW_USB; |
Chanwoo Choi | 2b75799 | 2012-12-06 21:27:56 +0900 | [diff] [blame] | 1245 | |
Chanwoo Choi | 190d7cf | 2013-02-18 10:03:32 +0900 | [diff] [blame] | 1246 | /* |
| 1247 | * Default delay time for detecting cable state |
| 1248 | * after certain time. |
| 1249 | */ |
| 1250 | if (muic_pdata->detcable_delay_ms) |
| 1251 | delay_jiffies = |
| 1252 | msecs_to_jiffies(muic_pdata->detcable_delay_ms); |
| 1253 | else |
| 1254 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); |
| 1255 | } else { |
Chanwoo Choi | 2b75799 | 2012-12-06 21:27:56 +0900 | [diff] [blame] | 1256 | info->path_usb = CONTROL1_SW_USB; |
Chanwoo Choi | 190d7cf | 2013-02-18 10:03:32 +0900 | [diff] [blame] | 1257 | info->path_uart = CONTROL1_SW_UART; |
| 1258 | delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); |
| 1259 | } |
Chanwoo Choi | 2b75799 | 2012-12-06 21:27:56 +0900 | [diff] [blame] | 1260 | |
| 1261 | /* Set initial path for UART */ |
| 1262 | max77693_muic_set_path(info, info->path_uart, true); |
| 1263 | |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1264 | /* Check revision number of MUIC device*/ |
| 1265 | ret = max77693_read_reg(info->max77693->regmap_muic, |
| 1266 | MAX77693_MUIC_REG_ID, &id); |
| 1267 | if (ret < 0) { |
| 1268 | dev_err(&pdev->dev, "failed to read revision number\n"); |
Sangjung Woo | 10fae11 | 2014-04-21 19:10:12 +0900 | [diff] [blame] | 1269 | goto err_irq; |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1270 | } |
| 1271 | dev_info(info->dev, "device ID : 0x%x\n", id); |
| 1272 | |
| 1273 | /* Set ADC debounce time */ |
| 1274 | max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); |
| 1275 | |
Chanwoo Choi | 297620f | 2012-12-26 13:10:11 +0900 | [diff] [blame] | 1276 | /* |
| 1277 | * Detect accessory after completing the initialization of platform |
| 1278 | * |
| 1279 | * - Use delayed workqueue to detect cable state and then |
| 1280 | * notify cable state to notifiee/platform through uevent. |
| 1281 | * After completing the booting of platform, the extcon provider |
| 1282 | * driver should notify cable state to upper layer. |
| 1283 | */ |
| 1284 | INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); |
Krzysztof Kozlowski | b862941 | 2014-04-09 15:20:13 +0200 | [diff] [blame] | 1285 | queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
| 1286 | delay_jiffies); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1287 | |
| 1288 | return ret; |
| 1289 | |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1290 | err_irq: |
Sachin Kamat | 00af4b1 | 2012-11-20 15:46:44 +0900 | [diff] [blame] | 1291 | while (--i >= 0) |
| 1292 | free_irq(muic_irqs[i].virq, info); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1293 | return ret; |
| 1294 | } |
| 1295 | |
Bill Pemberton | 93ed032 | 2012-11-19 13:25:49 -0500 | [diff] [blame] | 1296 | static int max77693_muic_remove(struct platform_device *pdev) |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1297 | { |
| 1298 | struct max77693_muic_info *info = platform_get_drvdata(pdev); |
| 1299 | int i; |
| 1300 | |
| 1301 | for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
| 1302 | free_irq(muic_irqs[i].virq, info); |
| 1303 | cancel_work_sync(&info->irq_work); |
Chanwoo Choi | 39bf369 | 2012-12-03 13:09:41 +0900 | [diff] [blame] | 1304 | input_unregister_device(info->dock); |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1305 | |
| 1306 | return 0; |
| 1307 | } |
| 1308 | |
| 1309 | static struct platform_driver max77693_muic_driver = { |
| 1310 | .driver = { |
| 1311 | .name = DEV_NAME, |
| 1312 | .owner = THIS_MODULE, |
| 1313 | }, |
| 1314 | .probe = max77693_muic_probe, |
Bill Pemberton | 5f7e222 | 2012-11-19 13:20:06 -0500 | [diff] [blame] | 1315 | .remove = max77693_muic_remove, |
Chanwoo Choi | db1b903 | 2012-07-17 13:28:28 +0900 | [diff] [blame] | 1316 | }; |
| 1317 | |
| 1318 | module_platform_driver(max77693_muic_driver); |
| 1319 | |
| 1320 | MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); |
| 1321 | MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); |
| 1322 | MODULE_LICENSE("GPL"); |
| 1323 | MODULE_ALIAS("platform:extcon-max77693"); |