| /* |
| * extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC |
| * |
| * Copyright (C) 2012 Samsung Electrnoics |
| * Chanwoo Choi <cw00.choi@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/i2c.h> |
| #include <linux/slab.h> |
| #include <linux/input.h> |
| #include <linux/interrupt.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/mfd/max77693.h> |
| #include <linux/mfd/max77693-private.h> |
| #include <linux/extcon.h> |
| #include <linux/regmap.h> |
| #include <linux/irqdomain.h> |
| |
| #define DEV_NAME "max77693-muic" |
| #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ |
| |
| /* |
| * Default value of MAX77693 register to bring up MUIC device. |
| * If user don't set some initial value for MUIC device through platform data, |
| * extcon-max77693 driver use 'default_init_data' to bring up base operation |
| * of MAX77693 MUIC device. |
| */ |
| static struct max77693_reg_data default_init_data[] = { |
| { |
| /* STATUS2 - [3]ChgDetRun */ |
| .addr = MAX77693_MUIC_REG_STATUS2, |
| .data = STATUS2_CHGDETRUN_MASK, |
| }, { |
| /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ |
| .addr = MAX77693_MUIC_REG_INTMASK1, |
| .data = INTMASK1_ADC1K_MASK |
| | INTMASK1_ADC_MASK, |
| }, { |
| /* INTMASK2 - Unmask [0]ChgTypM */ |
| .addr = MAX77693_MUIC_REG_INTMASK2, |
| .data = INTMASK2_CHGTYP_MASK, |
| }, { |
| /* INTMASK3 - Mask all of interrupts */ |
| .addr = MAX77693_MUIC_REG_INTMASK3, |
| .data = 0x0, |
| }, { |
| /* CDETCTRL2 */ |
| .addr = MAX77693_MUIC_REG_CDETCTRL2, |
| .data = CDETCTRL2_VIDRMEN_MASK |
| | CDETCTRL2_DXOVPEN_MASK, |
| }, |
| }; |
| |
| enum max77693_muic_adc_debounce_time { |
| ADC_DEBOUNCE_TIME_5MS = 0, |
| ADC_DEBOUNCE_TIME_10MS, |
| ADC_DEBOUNCE_TIME_25MS, |
| ADC_DEBOUNCE_TIME_38_62MS, |
| }; |
| |
| struct max77693_muic_info { |
| struct device *dev; |
| struct max77693_dev *max77693; |
| struct extcon_dev *edev; |
| int prev_cable_type; |
| int prev_cable_type_gnd; |
| int prev_chg_type; |
| int prev_button_type; |
| u8 status[2]; |
| |
| int irq; |
| struct work_struct irq_work; |
| struct mutex mutex; |
| |
| /* |
| * Use delayed workqueue to detect cable state and then |
| * notify cable state to notifiee/platform through uevent. |
| * After completing the booting of platform, the extcon provider |
| * driver should notify cable state to upper layer. |
| */ |
| struct delayed_work wq_detcable; |
| |
| /* Button of dock device */ |
| struct input_dev *dock; |
| |
| /* |
| * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB |
| * h/w path of COMP2/COMN1 on CONTROL1 register. |
| */ |
| int path_usb; |
| int path_uart; |
| }; |
| |
| enum max77693_muic_cable_group { |
| MAX77693_CABLE_GROUP_ADC = 0, |
| MAX77693_CABLE_GROUP_ADC_GND, |
| MAX77693_CABLE_GROUP_CHG, |
| MAX77693_CABLE_GROUP_VBVOLT, |
| }; |
| |
| enum max77693_muic_charger_type { |
| MAX77693_CHARGER_TYPE_NONE = 0, |
| MAX77693_CHARGER_TYPE_USB, |
| MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, |
| MAX77693_CHARGER_TYPE_DEDICATED_CHG, |
| MAX77693_CHARGER_TYPE_APPLE_500MA, |
| MAX77693_CHARGER_TYPE_APPLE_1A_2A, |
| MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, |
| }; |
| |
| /** |
| * struct max77693_muic_irq |
| * @irq: the index of irq list of MUIC device. |
| * @name: the name of irq. |
| * @virq: the virtual irq to use irq domain |
| */ |
| struct max77693_muic_irq { |
| unsigned int irq; |
| const char *name; |
| unsigned int virq; |
| }; |
| |
| static struct max77693_muic_irq muic_irqs[] = { |
| { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, |
| { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, |
| { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, |
| { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, |
| { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, |
| { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, |
| { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, |
| { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, |
| { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, |
| { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, |
| { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, |
| { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, |
| { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, |
| { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, |
| { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, |
| { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, |
| }; |
| |
| /* Define supported accessory type */ |
| enum max77693_muic_acc_type { |
| MAX77693_MUIC_ADC_GROUND = 0x0, |
| MAX77693_MUIC_ADC_SEND_END_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, |
| MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, |
| MAX77693_MUIC_ADC_RESERVED_ACC_1, |
| MAX77693_MUIC_ADC_RESERVED_ACC_2, |
| MAX77693_MUIC_ADC_RESERVED_ACC_3, |
| MAX77693_MUIC_ADC_RESERVED_ACC_4, |
| MAX77693_MUIC_ADC_RESERVED_ACC_5, |
| MAX77693_MUIC_ADC_CEA936_AUDIO, |
| MAX77693_MUIC_ADC_PHONE_POWERED_DEV, |
| MAX77693_MUIC_ADC_TTY_CONVERTER, |
| MAX77693_MUIC_ADC_UART_CABLE, |
| MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, |
| MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, |
| MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, |
| MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, |
| MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, |
| MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, |
| MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, |
| MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, |
| MAX77693_MUIC_ADC_OPEN, |
| |
| /* The below accessories have same ADC value so ADCLow and |
| ADC1K bit is used to separate specific accessory */ |
| /* ADC|VBVolot|ADCLow|ADC1K| */ |
| MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */ |
| MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */ |
| MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ |
| MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ |
| MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ |
| }; |
| |
| /* |
| * MAX77693 MUIC device support below list of accessories(external connector) |
| */ |
| static const enum extcon max77693_extcon_cable[] = { |
| EXTCON_USB, |
| EXTCON_USB_HOST, |
| EXTCON_TA, |
| EXTCON_FAST_CHARGER, |
| EXTCON_SLOW_CHARGER, |
| EXTCON_CHARGE_DOWNSTREAM, |
| EXTCON_MHL, |
| EXTCON_JIG, |
| EXTCON_DOCK, |
| EXTCON_NONE, |
| }; |
| |
| /* |
| * max77693_muic_set_debounce_time - Set the debounce time of ADC |
| * @info: the instance including private data of max77693 MUIC |
| * @time: the debounce time of ADC |
| */ |
| static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, |
| enum max77693_muic_adc_debounce_time time) |
| { |
| int ret; |
| |
| switch (time) { |
| case ADC_DEBOUNCE_TIME_5MS: |
| case ADC_DEBOUNCE_TIME_10MS: |
| case ADC_DEBOUNCE_TIME_25MS: |
| case ADC_DEBOUNCE_TIME_38_62MS: |
| /* |
| * Don't touch BTLDset, JIGset when you want to change adc |
| * debounce time. If it writes other than 0 to BTLDset, JIGset |
| * muic device will be reset and loose current state. |
| */ |
| ret = regmap_write(info->max77693->regmap_muic, |
| MAX77693_MUIC_REG_CTRL3, |
| time << CONTROL3_ADCDBSET_SHIFT); |
| if (ret) { |
| dev_err(info->dev, "failed to set ADC debounce time\n"); |
| return ret; |
| } |
| break; |
| default: |
| dev_err(info->dev, "invalid ADC debounce time\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| }; |
| |
| /* |
| * max77693_muic_set_path - Set hardware line according to attached cable |
| * @info: the instance including private data of max77693 MUIC |
| * @value: the path according to attached cable |
| * @attached: the state of cable (true:attached, false:detached) |
| * |
| * The max77693 MUIC device share outside H/W line among a varity of cables |
| * so, this function set internal path of H/W line according to the type of |
| * attached cable. |
| */ |
| static int max77693_muic_set_path(struct max77693_muic_info *info, |
| u8 val, bool attached) |
| { |
| int ret = 0; |
| unsigned int ctrl1, ctrl2 = 0; |
| |
| if (attached) |
| ctrl1 = val; |
| else |
| ctrl1 = CONTROL1_SW_OPEN; |
| |
| ret = regmap_update_bits(info->max77693->regmap_muic, |
| MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); |
| if (ret < 0) { |
| dev_err(info->dev, "failed to update MUIC register\n"); |
| return ret; |
| } |
| |
| if (attached) |
| ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ |
| else |
| ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ |
| |
| ret = regmap_update_bits(info->max77693->regmap_muic, |
| MAX77693_MUIC_REG_CTRL2, |
| CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2); |
| if (ret < 0) { |
| dev_err(info->dev, "failed to update MUIC register\n"); |
| return ret; |
| } |
| |
| dev_info(info->dev, |
| "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", |
| ctrl1, ctrl2, attached ? "attached" : "detached"); |
| |
| return 0; |
| } |
| |
| /* |
| * max77693_muic_get_cable_type - Return cable type and check cable state |
| * @info: the instance including private data of max77693 MUIC |
| * @group: the path according to attached cable |
| * @attached: store cable state and return |
| * |
| * This function check the cable state either attached or detached, |
| * and then divide precise type of cable according to cable group. |
| * - MAX77693_CABLE_GROUP_ADC |
| * - MAX77693_CABLE_GROUP_ADC_GND |
| * - MAX77693_CABLE_GROUP_CHG |
| * - MAX77693_CABLE_GROUP_VBVOLT |
| */ |
| static int max77693_muic_get_cable_type(struct max77693_muic_info *info, |
| enum max77693_muic_cable_group group, bool *attached) |
| { |
| int cable_type = 0; |
| int adc; |
| int adc1k; |
| int adclow; |
| int vbvolt; |
| int chg_type; |
| |
| switch (group) { |
| case MAX77693_CABLE_GROUP_ADC: |
| /* |
| * Read ADC value to check cable type and decide cable state |
| * according to cable type |
| */ |
| adc = info->status[0] & STATUS1_ADC_MASK; |
| adc >>= STATUS1_ADC_SHIFT; |
| |
| /* |
| * Check current cable state/cable type and store cable type |
| * (info->prev_cable_type) for handling cable when cable is |
| * detached. |
| */ |
| if (adc == MAX77693_MUIC_ADC_OPEN) { |
| *attached = false; |
| |
| cable_type = info->prev_cable_type; |
| info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; |
| } else { |
| *attached = true; |
| |
| cable_type = info->prev_cable_type = adc; |
| } |
| break; |
| case MAX77693_CABLE_GROUP_ADC_GND: |
| /* |
| * Read ADC value to check cable type and decide cable state |
| * according to cable type |
| */ |
| adc = info->status[0] & STATUS1_ADC_MASK; |
| adc >>= STATUS1_ADC_SHIFT; |
| |
| /* |
| * Check current cable state/cable type and store cable type |
| * (info->prev_cable_type/_gnd) for handling cable when cable |
| * is detached. |
| */ |
| if (adc == MAX77693_MUIC_ADC_OPEN) { |
| *attached = false; |
| |
| cable_type = info->prev_cable_type_gnd; |
| info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; |
| } else { |
| *attached = true; |
| |
| adclow = info->status[0] & STATUS1_ADCLOW_MASK; |
| adclow >>= STATUS1_ADCLOW_SHIFT; |
| adc1k = info->status[0] & STATUS1_ADC1K_MASK; |
| adc1k >>= STATUS1_ADC1K_SHIFT; |
| |
| vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
| vbvolt >>= STATUS2_VBVOLT_SHIFT; |
| |
| /** |
| * [0x1|VBVolt|ADCLow|ADC1K] |
| * [0x1| 0| 0| 0] USB_HOST |
| * [0x1| 1| 0| 0] USB_HSOT_VB |
| * [0x1| 0| 1| 0] Audio Video cable with load |
| * [0x1| 0| 1| 1] MHL without charging cable |
| * [0x1| 1| 1| 1] MHL with charging cable |
| */ |
| cable_type = ((0x1 << 8) |
| | (vbvolt << 2) |
| | (adclow << 1) |
| | adc1k); |
| |
| info->prev_cable_type = adc; |
| info->prev_cable_type_gnd = cable_type; |
| } |
| |
| break; |
| case MAX77693_CABLE_GROUP_CHG: |
| /* |
| * Read charger type to check cable type and decide cable state |
| * according to type of charger cable. |
| */ |
| chg_type = info->status[1] & STATUS2_CHGTYP_MASK; |
| chg_type >>= STATUS2_CHGTYP_SHIFT; |
| |
| if (chg_type == MAX77693_CHARGER_TYPE_NONE) { |
| *attached = false; |
| |
| cable_type = info->prev_chg_type; |
| info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; |
| } else { |
| *attached = true; |
| |
| /* |
| * Check current cable state/cable type and store cable |
| * type(info->prev_chg_type) for handling cable when |
| * charger cable is detached. |
| */ |
| cable_type = info->prev_chg_type = chg_type; |
| } |
| |
| break; |
| case MAX77693_CABLE_GROUP_VBVOLT: |
| /* |
| * Read ADC value to check cable type and decide cable state |
| * according to cable type |
| */ |
| adc = info->status[0] & STATUS1_ADC_MASK; |
| adc >>= STATUS1_ADC_SHIFT; |
| chg_type = info->status[1] & STATUS2_CHGTYP_MASK; |
| chg_type >>= STATUS2_CHGTYP_SHIFT; |
| |
| if (adc == MAX77693_MUIC_ADC_OPEN |
| && chg_type == MAX77693_CHARGER_TYPE_NONE) |
| *attached = false; |
| else |
| *attached = true; |
| |
| /* |
| * Read vbvolt field, if vbvolt is 1, |
| * this cable is used for charging. |
| */ |
| vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; |
| vbvolt >>= STATUS2_VBVOLT_SHIFT; |
| |
| cable_type = vbvolt; |
| break; |
| default: |
| dev_err(info->dev, "Unknown cable group (%d)\n", group); |
| cable_type = -EINVAL; |
| break; |
| } |
| |
| return cable_type; |
| } |
| |
| static int max77693_muic_dock_handler(struct max77693_muic_info *info, |
| int cable_type, bool attached) |
| { |
| int ret = 0; |
| int vbvolt; |
| bool cable_attached; |
| enum extcon dock_id; |
| |
| dev_info(info->dev, |
| "external connector is %s (adc:0x%02x)\n", |
| attached ? "attached" : "detached", cable_type); |
| |
| switch (cable_type) { |
| case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
| /* |
| * Check power cable whether attached or detached state. |
| * The Dock-Smart device need surely external power supply. |
| * If power cable(USB/TA) isn't connected to Dock device, |
| * user can't use Dock-Smart for desktop mode. |
| */ |
| vbvolt = max77693_muic_get_cable_type(info, |
| MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); |
| if (attached && !vbvolt) { |
| dev_warn(info->dev, |
| "Cannot detect external power supply\n"); |
| return 0; |
| } |
| |
| /* |
| * Notify Dock/MHL state. |
| * - Dock device include three type of cable which |
| * are HDMI, USB for mouse/keyboard and micro-usb port |
| * for USB/TA cable. Dock device need always exteranl |
| * power supply(USB/TA cable through micro-usb cable). Dock |
| * device support screen output of target to separate |
| * monitor and mouse/keyboard for desktop mode. |
| * |
| * Features of 'USB/TA cable with Dock device' |
| * - Support MHL |
| * - Support external output feature of audio |
| * - Support charging through micro-usb port without data |
| * connection if TA cable is connected to target. |
| * - Support charging and data connection through micro-usb port |
| * if USB cable is connected between target and host |
| * device. |
| * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
| */ |
| ret = max77693_muic_set_path(info, info->path_usb, attached); |
| if (ret < 0) |
| return ret; |
| |
| extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached); |
| extcon_set_cable_state_(info->edev, EXTCON_MHL, attached); |
| goto out; |
| case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
| dock_id = EXTCON_DOCK; |
| break; |
| case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ |
| dock_id = EXTCON_DOCK; |
| if (!attached) |
| extcon_set_cable_state_(info->edev, EXTCON_USB, false); |
| break; |
| default: |
| dev_err(info->dev, "failed to detect %s dock device\n", |
| attached ? "attached" : "detached"); |
| return -EINVAL; |
| } |
| |
| /* Dock-Car/Desk/Audio, PATH:AUDIO */ |
| ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
| if (ret < 0) |
| return ret; |
| extcon_set_cable_state_(info->edev, dock_id, attached); |
| |
| out: |
| return 0; |
| } |
| |
| static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, |
| int button_type, bool attached) |
| { |
| struct input_dev *dock = info->dock; |
| unsigned int code; |
| |
| switch (button_type) { |
| case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 |
| ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: |
| /* DOCK_KEY_PREV */ |
| code = KEY_PREVIOUSSONG; |
| break; |
| case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 |
| ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: |
| /* DOCK_KEY_NEXT */ |
| code = KEY_NEXTSONG; |
| break; |
| case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: |
| /* DOCK_VOL_DOWN */ |
| code = KEY_VOLUMEDOWN; |
| break; |
| case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: |
| /* DOCK_VOL_UP */ |
| code = KEY_VOLUMEUP; |
| break; |
| case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 |
| ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: |
| /* DOCK_KEY_PLAY_PAUSE */ |
| code = KEY_PLAYPAUSE; |
| break; |
| default: |
| dev_err(info->dev, |
| "failed to detect %s key (adc:0x%x)\n", |
| attached ? "pressed" : "released", button_type); |
| return -EINVAL; |
| } |
| |
| input_event(dock, EV_KEY, code, attached); |
| input_sync(dock); |
| |
| return 0; |
| } |
| |
| static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) |
| { |
| int cable_type_gnd; |
| int ret = 0; |
| bool attached; |
| |
| cable_type_gnd = max77693_muic_get_cable_type(info, |
| MAX77693_CABLE_GROUP_ADC_GND, &attached); |
| |
| switch (cable_type_gnd) { |
| case MAX77693_MUIC_GND_USB_HOST: |
| case MAX77693_MUIC_GND_USB_HOST_VB: |
| /* USB_HOST, PATH: AP_USB */ |
| ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); |
| if (ret < 0) |
| return ret; |
| extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached); |
| break; |
| case MAX77693_MUIC_GND_AV_CABLE_LOAD: |
| /* Audio Video Cable with load, PATH:AUDIO */ |
| ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); |
| if (ret < 0) |
| return ret; |
| extcon_set_cable_state_(info->edev, EXTCON_USB, attached); |
| break; |
| case MAX77693_MUIC_GND_MHL: |
| case MAX77693_MUIC_GND_MHL_VB: |
| /* MHL or MHL with USB/TA cable */ |
| extcon_set_cable_state_(info->edev, EXTCON_MHL, attached); |
| break; |
| default: |
| dev_err(info->dev, "failed to detect %s cable of gnd type\n", |
| attached ? "attached" : "detached"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int max77693_muic_jig_handler(struct max77693_muic_info *info, |
| int cable_type, bool attached) |
| { |
| int ret = 0; |
| u8 path = CONTROL1_SW_OPEN; |
| |
| dev_info(info->dev, |
| "external connector is %s (adc:0x%02x)\n", |
| attached ? "attached" : "detached", cable_type); |
| |
| switch (cable_type) { |
| case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ |
| case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ |
| /* PATH:AP_USB */ |
| path = CONTROL1_SW_USB; |
| break; |
| case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ |
| case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */ |
| /* PATH:AP_UART */ |
| path = CONTROL1_SW_UART; |
| break; |
| default: |
| dev_err(info->dev, "failed to detect %s jig cable\n", |
| attached ? "attached" : "detached"); |
| return -EINVAL; |
| } |
| |
| ret = max77693_muic_set_path(info, path, attached); |
| if (ret < 0) |
| return ret; |
| |
| extcon_set_cable_state_(info->edev, EXTCON_JIG, attached); |
| |
| return 0; |
| } |
| |
| static int max77693_muic_adc_handler(struct max77693_muic_info *info) |
| { |
| int cable_type; |
| int button_type; |
| bool attached; |
| int ret = 0; |
| |
| /* Check accessory state which is either detached or attached */ |
| cable_type = max77693_muic_get_cable_type(info, |
| MAX77693_CABLE_GROUP_ADC, &attached); |
| |
| dev_info(info->dev, |
| "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", |
| attached ? "attached" : "detached", cable_type, |
| info->prev_cable_type); |
| |
| switch (cable_type) { |
| case MAX77693_MUIC_ADC_GROUND: |
| /* USB_HOST/MHL/Audio */ |
| max77693_muic_adc_ground_handler(info); |
| break; |
| case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: |
| case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: |
| case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: |
| case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: |
| /* JIG */ |
| ret = max77693_muic_jig_handler(info, cable_type, attached); |
| if (ret < 0) |
| return ret; |
| break; |
| case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
| case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ |
| case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ |
| /* |
| * DOCK device |
| * |
| * The MAX77693 MUIC device can detect total 34 cable type |
| * except of charger cable and MUIC device didn't define |
| * specfic role of cable in the range of from 0x01 to 0x12 |
| * of ADC value. So, can use/define cable with no role according |
| * to schema of hardware board. |
| */ |
| ret = max77693_muic_dock_handler(info, cable_type, attached); |
| if (ret < 0) |
| return ret; |
| break; |
| case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ |
| case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ |
| case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ |
| case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ |
| case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ |
| /* |
| * Button of DOCK device |
| * - the Prev/Next/Volume Up/Volume Down/Play-Pause button |
| * |
| * The MAX77693 MUIC device can detect total 34 cable type |
| * except of charger cable and MUIC device didn't define |
| * specfic role of cable in the range of from 0x01 to 0x12 |
| * of ADC value. So, can use/define cable with no role according |
| * to schema of hardware board. |
| */ |
| if (attached) |
| button_type = info->prev_button_type = cable_type; |
| else |
| button_type = info->prev_button_type; |
| |
| ret = max77693_muic_dock_button_handler(info, button_type, |
| attached); |
| if (ret < 0) |
| return ret; |
| break; |
| case MAX77693_MUIC_ADC_SEND_END_BUTTON: |
| case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: |
| case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: |
| case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: |
| case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: |
| case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: |
| case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: |
| case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: |
| case MAX77693_MUIC_ADC_RESERVED_ACC_1: |
| case MAX77693_MUIC_ADC_RESERVED_ACC_2: |
| case MAX77693_MUIC_ADC_RESERVED_ACC_4: |
| case MAX77693_MUIC_ADC_RESERVED_ACC_5: |
| case MAX77693_MUIC_ADC_CEA936_AUDIO: |
| case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: |
| case MAX77693_MUIC_ADC_TTY_CONVERTER: |
| case MAX77693_MUIC_ADC_UART_CABLE: |
| case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: |
| case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: |
| /* |
| * This accessory isn't used in general case if it is specially |
| * needed to detect additional accessory, should implement |
| * proper operation when this accessory is attached/detached. |
| */ |
| dev_info(info->dev, |
| "accessory is %s but it isn't used (adc:0x%x)\n", |
| attached ? "attached" : "detached", cable_type); |
| return -EAGAIN; |
| default: |
| dev_err(info->dev, |
| "failed to detect %s accessory (adc:0x%x)\n", |
| attached ? "attached" : "detached", cable_type); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int max77693_muic_chg_handler(struct max77693_muic_info *info) |
| { |
| int chg_type; |
| int cable_type_gnd; |
| int cable_type; |
| bool attached; |
| bool cable_attached; |
| int ret = 0; |
| |
| chg_type = max77693_muic_get_cable_type(info, |
| MAX77693_CABLE_GROUP_CHG, &attached); |
| |
| dev_info(info->dev, |
| "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", |
| attached ? "attached" : "detached", |
| chg_type, info->prev_chg_type); |
| |
| switch (chg_type) { |
| case MAX77693_CHARGER_TYPE_USB: |
| case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
| case MAX77693_CHARGER_TYPE_NONE: |
| /* Check MAX77693_CABLE_GROUP_ADC_GND type */ |
| cable_type_gnd = max77693_muic_get_cable_type(info, |
| MAX77693_CABLE_GROUP_ADC_GND, |
| &cable_attached); |
| switch (cable_type_gnd) { |
| case MAX77693_MUIC_GND_MHL: |
| case MAX77693_MUIC_GND_MHL_VB: |
| /* |
| * MHL cable with USB/TA cable |
| * - MHL cable include two port(HDMI line and separate |
| * micro-usb port. When the target connect MHL cable, |
| * extcon driver check whether USB/TA cable is |
| * connected. If USB/TA cable is connected, extcon |
| * driver notify state to notifiee for charging battery. |
| * |
| * Features of 'USB/TA with MHL cable' |
| * - Support MHL |
| * - Support charging through micro-usb port without |
| * data connection |
| */ |
| extcon_set_cable_state_(info->edev, EXTCON_TA, attached); |
| if (!cable_attached) |
| extcon_set_cable_state_(info->edev, EXTCON_MHL, |
| cable_attached); |
| break; |
| } |
| |
| /* Check MAX77693_CABLE_GROUP_ADC type */ |
| cable_type = max77693_muic_get_cable_type(info, |
| MAX77693_CABLE_GROUP_ADC, |
| &cable_attached); |
| switch (cable_type) { |
| case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ |
| /* |
| * Dock-Audio device with USB/TA cable |
| * - Dock device include two port(Dock-Audio and micro- |
| * usb port). When the target connect Dock-Audio device, |
| * extcon driver check whether USB/TA cable is connected |
| * or not. If USB/TA cable is connected, extcon driver |
| * notify state to notifiee for charging battery. |
| * |
| * Features of 'USB/TA cable with Dock-Audio device' |
| * - Support external output feature of audio. |
| * - Support charging through micro-usb port without |
| * data connection. |
| */ |
| extcon_set_cable_state_(info->edev, EXTCON_USB, |
| attached); |
| |
| if (!cable_attached) |
| extcon_set_cable_state_(info->edev, EXTCON_DOCK, |
| cable_attached); |
| break; |
| case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ |
| /* |
| * Dock-Smart device with USB/TA cable |
| * - Dock-Desk device include three type of cable which |
| * are HDMI, USB for mouse/keyboard and micro-usb port |
| * for USB/TA cable. Dock-Smart device need always |
| * exteranl power supply(USB/TA cable through micro-usb |
| * cable). Dock-Smart device support screen output of |
| * target to separate monitor and mouse/keyboard for |
| * desktop mode. |
| * |
| * Features of 'USB/TA cable with Dock-Smart device' |
| * - Support MHL |
| * - Support external output feature of audio |
| * - Support charging through micro-usb port without |
| * data connection if TA cable is connected to target. |
| * - Support charging and data connection through micro- |
| * usb port if USB cable is connected between target |
| * and host device |
| * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) |
| */ |
| ret = max77693_muic_set_path(info, info->path_usb, |
| attached); |
| if (ret < 0) |
| return ret; |
| |
| extcon_set_cable_state_(info->edev, EXTCON_DOCK, |
| attached); |
| extcon_set_cable_state_(info->edev, EXTCON_MHL, |
| attached); |
| break; |
| } |
| |
| /* Check MAX77693_CABLE_GROUP_CHG type */ |
| switch (chg_type) { |
| case MAX77693_CHARGER_TYPE_NONE: |
| /* |
| * When MHL(with USB/TA cable) or Dock-Audio with USB/TA |
| * cable is attached, muic device happen below two irq. |
| * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting |
| * MHL/Dock-Audio. |
| * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting |
| * USB/TA cable connected to MHL or Dock-Audio. |
| * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC |
| * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. |
| * |
| * If user attach MHL (with USB/TA cable and immediately |
| * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ |
| * _INT2_CHGTYP irq is happened, USB/TA cable remain |
| * connected state to target. But USB/TA cable isn't |
| * connected to target. The user be face with unusual |
| * action. So, driver should check this situation in |
| * spite of, that previous charger type is N/A. |
| */ |
| break; |
| case MAX77693_CHARGER_TYPE_USB: |
| /* Only USB cable, PATH:AP_USB */ |
| ret = max77693_muic_set_path(info, info->path_usb, |
| attached); |
| if (ret < 0) |
| return ret; |
| |
| extcon_set_cable_state_(info->edev, EXTCON_USB, |
| attached); |
| break; |
| case MAX77693_CHARGER_TYPE_DEDICATED_CHG: |
| /* Only TA cable */ |
| extcon_set_cable_state_(info->edev, EXTCON_TA, attached); |
| break; |
| } |
| break; |
| case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: |
| extcon_set_cable_state_(info->edev, EXTCON_CHARGE_DOWNSTREAM, |
| attached); |
| break; |
| case MAX77693_CHARGER_TYPE_APPLE_500MA: |
| extcon_set_cable_state_(info->edev, EXTCON_SLOW_CHARGER, |
| attached); |
| break; |
| case MAX77693_CHARGER_TYPE_APPLE_1A_2A: |
| extcon_set_cable_state_(info->edev, EXTCON_FAST_CHARGER, |
| attached); |
| break; |
| case MAX77693_CHARGER_TYPE_DEAD_BATTERY: |
| break; |
| default: |
| dev_err(info->dev, |
| "failed to detect %s accessory (chg_type:0x%x)\n", |
| attached ? "attached" : "detached", chg_type); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static void max77693_muic_irq_work(struct work_struct *work) |
| { |
| struct max77693_muic_info *info = container_of(work, |
| struct max77693_muic_info, irq_work); |
| int irq_type = -1; |
| int i, ret = 0; |
| |
| if (!info->edev) |
| return; |
| |
| mutex_lock(&info->mutex); |
| |
| for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) |
| if (info->irq == muic_irqs[i].virq) |
| irq_type = muic_irqs[i].irq; |
| |
| ret = regmap_bulk_read(info->max77693->regmap_muic, |
| MAX77693_MUIC_REG_STATUS1, info->status, 2); |
| if (ret) { |
| dev_err(info->dev, "failed to read MUIC register\n"); |
| mutex_unlock(&info->mutex); |
| return; |
| } |
| |
| switch (irq_type) { |
| case MAX77693_MUIC_IRQ_INT1_ADC: |
| case MAX77693_MUIC_IRQ_INT1_ADC_LOW: |
| case MAX77693_MUIC_IRQ_INT1_ADC_ERR: |
| case MAX77693_MUIC_IRQ_INT1_ADC1K: |
| /* Handle all of accessory except for |
| type of charger accessory */ |
| ret = max77693_muic_adc_handler(info); |
| break; |
| case MAX77693_MUIC_IRQ_INT2_CHGTYP: |
| case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: |
| case MAX77693_MUIC_IRQ_INT2_DCDTMR: |
| case MAX77693_MUIC_IRQ_INT2_DXOVP: |
| case MAX77693_MUIC_IRQ_INT2_VBVOLT: |
| case MAX77693_MUIC_IRQ_INT2_VIDRM: |
| /* Handle charger accessory */ |
| ret = max77693_muic_chg_handler(info); |
| break; |
| case MAX77693_MUIC_IRQ_INT3_EOC: |
| case MAX77693_MUIC_IRQ_INT3_CGMBC: |
| case MAX77693_MUIC_IRQ_INT3_OVP: |
| case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: |
| case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: |
| case MAX77693_MUIC_IRQ_INT3_BAT_DET: |
| break; |
| default: |
| dev_err(info->dev, "muic interrupt: irq %d occurred\n", |
| irq_type); |
| mutex_unlock(&info->mutex); |
| return; |
| } |
| |
| if (ret < 0) |
| dev_err(info->dev, "failed to handle MUIC interrupt\n"); |
| |
| mutex_unlock(&info->mutex); |
| } |
| |
| static irqreturn_t max77693_muic_irq_handler(int irq, void *data) |
| { |
| struct max77693_muic_info *info = data; |
| |
| info->irq = irq; |
| schedule_work(&info->irq_work); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static const struct regmap_config max77693_muic_regmap_config = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| }; |
| |
| static int max77693_muic_detect_accessory(struct max77693_muic_info *info) |
| { |
| int ret = 0; |
| int adc; |
| int chg_type; |
| bool attached; |
| |
| mutex_lock(&info->mutex); |
| |
| /* Read STATUSx register to detect accessory */ |
| ret = regmap_bulk_read(info->max77693->regmap_muic, |
| MAX77693_MUIC_REG_STATUS1, info->status, 2); |
| if (ret) { |
| dev_err(info->dev, "failed to read MUIC register\n"); |
| mutex_unlock(&info->mutex); |
| return ret; |
| } |
| |
| adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, |
| &attached); |
| if (attached && adc != MAX77693_MUIC_ADC_OPEN) { |
| ret = max77693_muic_adc_handler(info); |
| if (ret < 0) { |
| dev_err(info->dev, "Cannot detect accessory\n"); |
| mutex_unlock(&info->mutex); |
| return ret; |
| } |
| } |
| |
| chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, |
| &attached); |
| if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { |
| ret = max77693_muic_chg_handler(info); |
| if (ret < 0) { |
| dev_err(info->dev, "Cannot detect charger accessory\n"); |
| mutex_unlock(&info->mutex); |
| return ret; |
| } |
| } |
| |
| mutex_unlock(&info->mutex); |
| |
| return 0; |
| } |
| |
| static void max77693_muic_detect_cable_wq(struct work_struct *work) |
| { |
| struct max77693_muic_info *info = container_of(to_delayed_work(work), |
| struct max77693_muic_info, wq_detcable); |
| |
| max77693_muic_detect_accessory(info); |
| } |
| |
| static int max77693_muic_probe(struct platform_device *pdev) |
| { |
| struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); |
| struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); |
| struct max77693_muic_info *info; |
| struct max77693_reg_data *init_data; |
| int num_init_data; |
| int delay_jiffies; |
| int ret; |
| int i; |
| unsigned int id; |
| |
| info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), |
| GFP_KERNEL); |
| if (!info) |
| return -ENOMEM; |
| |
| info->dev = &pdev->dev; |
| info->max77693 = max77693; |
| if (info->max77693->regmap_muic) { |
| dev_dbg(&pdev->dev, "allocate register map\n"); |
| } else { |
| info->max77693->regmap_muic = devm_regmap_init_i2c( |
| info->max77693->muic, |
| &max77693_muic_regmap_config); |
| if (IS_ERR(info->max77693->regmap_muic)) { |
| ret = PTR_ERR(info->max77693->regmap_muic); |
| dev_err(max77693->dev, |
| "failed to allocate register map: %d\n", ret); |
| return ret; |
| } |
| } |
| |
| /* Register input device for button of dock device */ |
| info->dock = devm_input_allocate_device(&pdev->dev); |
| if (!info->dock) { |
| dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); |
| return -ENOMEM; |
| } |
| info->dock->name = "max77693-muic/dock"; |
| info->dock->phys = "max77693-muic/extcon"; |
| info->dock->dev.parent = &pdev->dev; |
| |
| __set_bit(EV_REP, info->dock->evbit); |
| |
| input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); |
| input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); |
| input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); |
| input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); |
| input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); |
| |
| ret = input_register_device(info->dock); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "Cannot register input device error(%d)\n", |
| ret); |
| return ret; |
| } |
| |
| platform_set_drvdata(pdev, info); |
| mutex_init(&info->mutex); |
| |
| INIT_WORK(&info->irq_work, max77693_muic_irq_work); |
| |
| /* Support irq domain for MAX77693 MUIC device */ |
| for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { |
| struct max77693_muic_irq *muic_irq = &muic_irqs[i]; |
| unsigned int virq = 0; |
| |
| virq = regmap_irq_get_virq(max77693->irq_data_muic, |
| muic_irq->irq); |
| if (!virq) |
| return -EINVAL; |
| muic_irq->virq = virq; |
| |
| ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, |
| max77693_muic_irq_handler, |
| IRQF_NO_SUSPEND, |
| muic_irq->name, info); |
| if (ret) { |
| dev_err(&pdev->dev, |
| "failed: irq request (IRQ: %d, error :%d)\n", |
| muic_irq->irq, ret); |
| return ret; |
| } |
| } |
| |
| /* Initialize extcon device */ |
| info->edev = devm_extcon_dev_allocate(&pdev->dev, |
| max77693_extcon_cable); |
| if (IS_ERR(info->edev)) { |
| dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); |
| return -ENOMEM; |
| } |
| |
| ret = devm_extcon_dev_register(&pdev->dev, info->edev); |
| if (ret) { |
| dev_err(&pdev->dev, "failed to register extcon device\n"); |
| return ret; |
| } |
| |
| /* Initialize MUIC register by using platform data or default data */ |
| if (pdata && pdata->muic_data) { |
| init_data = pdata->muic_data->init_data; |
| num_init_data = pdata->muic_data->num_init_data; |
| } else { |
| init_data = default_init_data; |
| num_init_data = ARRAY_SIZE(default_init_data); |
| } |
| |
| for (i = 0; i < num_init_data; i++) { |
| enum max77693_irq_source irq_src |
| = MAX77693_IRQ_GROUP_NR; |
| |
| regmap_write(info->max77693->regmap_muic, |
| init_data[i].addr, |
| init_data[i].data); |
| |
| switch (init_data[i].addr) { |
| case MAX77693_MUIC_REG_INTMASK1: |
| irq_src = MUIC_INT1; |
| break; |
| case MAX77693_MUIC_REG_INTMASK2: |
| irq_src = MUIC_INT2; |
| break; |
| case MAX77693_MUIC_REG_INTMASK3: |
| irq_src = MUIC_INT3; |
| break; |
| } |
| |
| if (irq_src < MAX77693_IRQ_GROUP_NR) |
| info->max77693->irq_masks_cur[irq_src] |
| = init_data[i].data; |
| } |
| |
| if (pdata && pdata->muic_data) { |
| struct max77693_muic_platform_data *muic_pdata |
| = pdata->muic_data; |
| |
| /* |
| * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB |
| * h/w path of COMP2/COMN1 on CONTROL1 register. |
| */ |
| if (muic_pdata->path_uart) |
| info->path_uart = muic_pdata->path_uart; |
| else |
| info->path_uart = CONTROL1_SW_UART; |
| |
| if (muic_pdata->path_usb) |
| info->path_usb = muic_pdata->path_usb; |
| else |
| info->path_usb = CONTROL1_SW_USB; |
| |
| /* |
| * Default delay time for detecting cable state |
| * after certain time. |
| */ |
| if (muic_pdata->detcable_delay_ms) |
| delay_jiffies = |
| msecs_to_jiffies(muic_pdata->detcable_delay_ms); |
| else |
| delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); |
| } else { |
| info->path_usb = CONTROL1_SW_USB; |
| info->path_uart = CONTROL1_SW_UART; |
| delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); |
| } |
| |
| /* Set initial path for UART */ |
| max77693_muic_set_path(info, info->path_uart, true); |
| |
| /* Check revision number of MUIC device*/ |
| ret = regmap_read(info->max77693->regmap_muic, |
| MAX77693_MUIC_REG_ID, &id); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "failed to read revision number\n"); |
| return ret; |
| } |
| dev_info(info->dev, "device ID : 0x%x\n", id); |
| |
| /* Set ADC debounce time */ |
| max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); |
| |
| /* |
| * Detect accessory after completing the initialization of platform |
| * |
| * - Use delayed workqueue to detect cable state and then |
| * notify cable state to notifiee/platform through uevent. |
| * After completing the booting of platform, the extcon provider |
| * driver should notify cable state to upper layer. |
| */ |
| INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); |
| queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
| delay_jiffies); |
| |
| return ret; |
| } |
| |
| static int max77693_muic_remove(struct platform_device *pdev) |
| { |
| struct max77693_muic_info *info = platform_get_drvdata(pdev); |
| |
| cancel_work_sync(&info->irq_work); |
| input_unregister_device(info->dock); |
| |
| return 0; |
| } |
| |
| static struct platform_driver max77693_muic_driver = { |
| .driver = { |
| .name = DEV_NAME, |
| }, |
| .probe = max77693_muic_probe, |
| .remove = max77693_muic_remove, |
| }; |
| |
| module_platform_driver(max77693_muic_driver); |
| |
| MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); |
| MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:extcon-max77693"); |