/* * extcon-sm5502.c - Silicon Mitus SM5502 extcon drvier to support USB switches * * Copyright (c) 2014 Samsung Electronics Co., Ltd * Author: Chanwoo Choi * * 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. */ #include #include #include #include #include #include #include #include #include #include #include "extcon-sm5502.h" #define DELAY_MS_DEFAULT 17000 /* unit: millisecond */ struct muic_irq { unsigned int irq; const char *name; unsigned int virq; }; struct reg_data { u8 reg; unsigned int val; bool invert; }; struct sm5502_muic_info { struct device *dev; struct extcon_dev *edev; struct i2c_client *i2c; struct regmap *regmap; struct regmap_irq_chip_data *irq_data; struct muic_irq *muic_irqs; unsigned int num_muic_irqs; int irq; bool irq_attach; bool irq_detach; struct work_struct irq_work; struct reg_data *reg_data; unsigned int num_reg_data; 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; }; /* Default value of SM5502 register to bring up MUIC device. */ static struct reg_data sm5502_reg_data[] = { { .reg = SM5502_REG_CONTROL, .val = SM5502_REG_CONTROL_MASK_INT_MASK, .invert = false, }, { .reg = SM5502_REG_INTMASK1, .val = SM5502_REG_INTM1_KP_MASK | SM5502_REG_INTM1_LKP_MASK | SM5502_REG_INTM1_LKR_MASK, .invert = true, }, { .reg = SM5502_REG_INTMASK2, .val = SM5502_REG_INTM2_VBUS_DET_MASK | SM5502_REG_INTM2_REV_ACCE_MASK | SM5502_REG_INTM2_ADC_CHG_MASK | SM5502_REG_INTM2_STUCK_KEY_MASK | SM5502_REG_INTM2_STUCK_KEY_RCV_MASK | SM5502_REG_INTM2_MHL_MASK, .invert = true, }, { } }; /* List of detectable cables */ enum { EXTCON_CABLE_USB = 0, EXTCON_CABLE_USB_HOST, EXTCON_CABLE_TA, EXTCON_CABLE_END, }; static const char *sm5502_extcon_cable[] = { [EXTCON_CABLE_USB] = "USB", [EXTCON_CABLE_USB_HOST] = "USB-Host", [EXTCON_CABLE_TA] = "TA", NULL, }; /* Define supported accessory type */ enum sm5502_muic_acc_type { SM5502_MUIC_ADC_GROUND = 0x0, SM5502_MUIC_ADC_SEND_END_BUTTON, SM5502_MUIC_ADC_REMOTE_S1_BUTTON, SM5502_MUIC_ADC_REMOTE_S2_BUTTON, SM5502_MUIC_ADC_REMOTE_S3_BUTTON, SM5502_MUIC_ADC_REMOTE_S4_BUTTON, SM5502_MUIC_ADC_REMOTE_S5_BUTTON, SM5502_MUIC_ADC_REMOTE_S6_BUTTON, SM5502_MUIC_ADC_REMOTE_S7_BUTTON, SM5502_MUIC_ADC_REMOTE_S8_BUTTON, SM5502_MUIC_ADC_REMOTE_S9_BUTTON, SM5502_MUIC_ADC_REMOTE_S10_BUTTON, SM5502_MUIC_ADC_REMOTE_S11_BUTTON, SM5502_MUIC_ADC_REMOTE_S12_BUTTON, SM5502_MUIC_ADC_RESERVED_ACC_1, SM5502_MUIC_ADC_RESERVED_ACC_2, SM5502_MUIC_ADC_RESERVED_ACC_3, SM5502_MUIC_ADC_RESERVED_ACC_4, SM5502_MUIC_ADC_RESERVED_ACC_5, SM5502_MUIC_ADC_AUDIO_TYPE2, SM5502_MUIC_ADC_PHONE_POWERED_DEV, SM5502_MUIC_ADC_TTY_CONVERTER, SM5502_MUIC_ADC_UART_CABLE, SM5502_MUIC_ADC_TYPE1_CHARGER, SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB, SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB, SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE, SM5502_MUIC_ADC_TYPE2_CHARGER, SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART, SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART, SM5502_MUIC_ADC_AUDIO_TYPE1, SM5502_MUIC_ADC_OPEN = 0x1f, /* The below accessories have same ADC value (0x1f or 0x1e). So, Device type1 is used to separate specific accessory. */ /* |---------|--ADC| */ /* | [7:5]|[4:0]| */ SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */ SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END = 0x5e, /* | 010|11110| */ /* |Dev Type1|--ADC| */ SM5502_MUIC_ADC_OPEN_USB = 0x5f, /* | 010|11111| */ SM5502_MUIC_ADC_OPEN_TA = 0xdf, /* | 110|11111| */ SM5502_MUIC_ADC_OPEN_USB_OTG = 0xff, /* | 111|11111| */ }; /* List of supported interrupt for SM5502 */ static struct muic_irq sm5502_muic_irqs[] = { { SM5502_IRQ_INT1_ATTACH, "muic-attach" }, { SM5502_IRQ_INT1_DETACH, "muic-detach" }, { SM5502_IRQ_INT1_KP, "muic-kp" }, { SM5502_IRQ_INT1_LKP, "muic-lkp" }, { SM5502_IRQ_INT1_LKR, "muic-lkr" }, { SM5502_IRQ_INT1_OVP_EVENT, "muic-ovp-event" }, { SM5502_IRQ_INT1_OCP_EVENT, "muic-ocp-event" }, { SM5502_IRQ_INT1_OVP_OCP_DIS, "muic-ovp-ocp-dis" }, { SM5502_IRQ_INT2_VBUS_DET, "muic-vbus-det" }, { SM5502_IRQ_INT2_REV_ACCE, "muic-rev-acce" }, { SM5502_IRQ_INT2_ADC_CHG, "muic-adc-chg" }, { SM5502_IRQ_INT2_STUCK_KEY, "muic-stuck-key" }, { SM5502_IRQ_INT2_STUCK_KEY_RCV, "muic-stuck-key-rcv" }, { SM5502_IRQ_INT2_MHL, "muic-mhl" }, }; /* Define interrupt list of SM5502 to register regmap_irq */ static const struct regmap_irq sm5502_irqs[] = { /* INT1 interrupts */ { .reg_offset = 0, .mask = SM5502_IRQ_INT1_ATTACH_MASK, }, { .reg_offset = 0, .mask = SM5502_IRQ_INT1_DETACH_MASK, }, { .reg_offset = 0, .mask = SM5502_IRQ_INT1_KP_MASK, }, { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKP_MASK, }, { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKR_MASK, }, { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_EVENT_MASK, }, { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OCP_EVENT_MASK, }, { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_OCP_DIS_MASK, }, /* INT2 interrupts */ { .reg_offset = 1, .mask = SM5502_IRQ_INT2_VBUS_DET_MASK,}, { .reg_offset = 1, .mask = SM5502_IRQ_INT2_REV_ACCE_MASK, }, { .reg_offset = 1, .mask = SM5502_IRQ_INT2_ADC_CHG_MASK, }, { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_MASK, }, { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK, }, { .reg_offset = 1, .mask = SM5502_IRQ_INT2_MHL_MASK, }, }; static const struct regmap_irq_chip sm5502_muic_irq_chip = { .name = "sm5502", .status_base = SM5502_REG_INT1, .mask_base = SM5502_REG_INTMASK1, .mask_invert = false, .num_regs = 2, .irqs = sm5502_irqs, .num_irqs = ARRAY_SIZE(sm5502_irqs), }; /* Define regmap configuration of SM5502 for I2C communication */ static bool sm5502_muic_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { case SM5502_REG_INTMASK1: case SM5502_REG_INTMASK2: return true; default: break; } return false; } static const struct regmap_config sm5502_muic_regmap_config = { .reg_bits = 8, .val_bits = 8, .volatile_reg = sm5502_muic_volatile_reg, .max_register = SM5502_REG_END, }; /* Change DM_CON/DP_CON/VBUSIN switch according to cable type */ static int sm5502_muic_set_path(struct sm5502_muic_info *info, unsigned int con_sw, unsigned int vbus_sw, bool attached) { int ret; if (!attached) { con_sw = DM_DP_SWITCH_OPEN; vbus_sw = VBUSIN_SWITCH_OPEN; } switch (con_sw) { case DM_DP_SWITCH_OPEN: case DM_DP_SWITCH_USB: case DM_DP_SWITCH_AUDIO: case DM_DP_SWITCH_UART: ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1, SM5502_REG_MANUAL_SW1_DP_MASK | SM5502_REG_MANUAL_SW1_DM_MASK, con_sw); if (ret < 0) { dev_err(info->dev, "cannot update DM_CON/DP_CON switch\n"); return ret; } break; default: dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n", con_sw); return -EINVAL; }; switch (vbus_sw) { case VBUSIN_SWITCH_OPEN: case VBUSIN_SWITCH_VBUSOUT: case VBUSIN_SWITCH_MIC: case VBUSIN_SWITCH_VBUSOUT_WITH_USB: ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1, SM5502_REG_MANUAL_SW1_VBUSIN_MASK, vbus_sw); if (ret < 0) { dev_err(info->dev, "cannot update VBUSIN switch\n"); return ret; } break; default: dev_err(info->dev, "Unknown VBUS switch type (%d)\n", vbus_sw); return -EINVAL; }; return 0; } /* Return cable type of attached or detached accessories */ static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info) { unsigned int cable_type = -1, adc, dev_type1; int ret; /* Read ADC value according to external cable or button */ ret = regmap_read(info->regmap, SM5502_REG_ADC, &adc); if (ret) { dev_err(info->dev, "failed to read ADC register\n"); return ret; } /* * If ADC is SM5502_MUIC_ADC_GROUND(0x0), external cable hasn't * connected with to MUIC device. */ cable_type = adc & SM5502_REG_ADC_MASK; if (cable_type == SM5502_MUIC_ADC_GROUND) return SM5502_MUIC_ADC_GROUND; switch (cable_type) { case SM5502_MUIC_ADC_GROUND: case SM5502_MUIC_ADC_SEND_END_BUTTON: case SM5502_MUIC_ADC_REMOTE_S1_BUTTON: case SM5502_MUIC_ADC_REMOTE_S2_BUTTON: case SM5502_MUIC_ADC_REMOTE_S3_BUTTON: case SM5502_MUIC_ADC_REMOTE_S4_BUTTON: case SM5502_MUIC_ADC_REMOTE_S5_BUTTON: case SM5502_MUIC_ADC_REMOTE_S6_BUTTON: case SM5502_MUIC_ADC_REMOTE_S7_BUTTON: case SM5502_MUIC_ADC_REMOTE_S8_BUTTON: case SM5502_MUIC_ADC_REMOTE_S9_BUTTON: case SM5502_MUIC_ADC_REMOTE_S10_BUTTON: case SM5502_MUIC_ADC_REMOTE_S11_BUTTON: case SM5502_MUIC_ADC_REMOTE_S12_BUTTON: case SM5502_MUIC_ADC_RESERVED_ACC_1: case SM5502_MUIC_ADC_RESERVED_ACC_2: case SM5502_MUIC_ADC_RESERVED_ACC_3: case SM5502_MUIC_ADC_RESERVED_ACC_4: case SM5502_MUIC_ADC_RESERVED_ACC_5: case SM5502_MUIC_ADC_AUDIO_TYPE2: case SM5502_MUIC_ADC_PHONE_POWERED_DEV: case SM5502_MUIC_ADC_TTY_CONVERTER: case SM5502_MUIC_ADC_UART_CABLE: case SM5502_MUIC_ADC_TYPE1_CHARGER: case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB: case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB: case SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE: case SM5502_MUIC_ADC_TYPE2_CHARGER: case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART: case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART: break; case SM5502_MUIC_ADC_AUDIO_TYPE1: /* * Check whether cable type is * SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE * or SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END * by using Button event. */ break; case SM5502_MUIC_ADC_OPEN: ret = regmap_read(info->regmap, SM5502_REG_DEV_TYPE1, &dev_type1); if (ret) { dev_err(info->dev, "failed to read DEV_TYPE1 reg\n"); return ret; } switch (dev_type1) { case SM5502_REG_DEV_TYPE1_USB_SDP_MASK: cable_type = SM5502_MUIC_ADC_OPEN_USB; break; case SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK: cable_type = SM5502_MUIC_ADC_OPEN_TA; break; case SM5502_REG_DEV_TYPE1_USB_OTG_MASK: cable_type = SM5502_MUIC_ADC_OPEN_USB_OTG; break; default: dev_dbg(info->dev, "cannot identify the cable type: adc(0x%x) " "dev_type1(0x%x)\n", adc, dev_type1); return -EINVAL; }; break; default: dev_err(info->dev, "failed to identify the cable type: adc(0x%x)\n", adc); return -EINVAL; }; return cable_type; } static int sm5502_muic_cable_handler(struct sm5502_muic_info *info, bool attached) { static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND; const char **cable_names = info->edev->supported_cable; unsigned int cable_type = SM5502_MUIC_ADC_GROUND; unsigned int con_sw = DM_DP_SWITCH_OPEN; unsigned int vbus_sw = VBUSIN_SWITCH_OPEN; unsigned int idx = 0; int ret; if (!cable_names) return 0; /* Get the type of attached or detached cable */ if (attached) cable_type = sm5502_muic_get_cable_type(info); else cable_type = prev_cable_type; prev_cable_type = cable_type; switch (cable_type) { case SM5502_MUIC_ADC_OPEN_USB: idx = EXTCON_CABLE_USB; con_sw = DM_DP_SWITCH_USB; vbus_sw = VBUSIN_SWITCH_VBUSOUT_WITH_USB; break; case SM5502_MUIC_ADC_OPEN_TA: idx = EXTCON_CABLE_TA; con_sw = DM_DP_SWITCH_OPEN; vbus_sw = VBUSIN_SWITCH_VBUSOUT; break; case SM5502_MUIC_ADC_OPEN_USB_OTG: idx = EXTCON_CABLE_USB_HOST; con_sw = DM_DP_SWITCH_USB; vbus_sw = VBUSIN_SWITCH_OPEN; break; default: dev_dbg(info->dev, "cannot handle this cable_type (0x%x)\n", cable_type); return 0; }; /* Change internal hardware path(DM_CON/DP_CON, VBUSIN) */ ret = sm5502_muic_set_path(info, con_sw, vbus_sw, attached); if (ret < 0) return ret; /* Change the state of external accessory */ extcon_set_cable_state(info->edev, cable_names[idx], attached); return 0; } static void sm5502_muic_irq_work(struct work_struct *work) { struct sm5502_muic_info *info = container_of(work, struct sm5502_muic_info, irq_work); int ret = 0; if (!info->edev) return; mutex_lock(&info->mutex); /* Detect attached or detached cables */ if (info->irq_attach) { ret = sm5502_muic_cable_handler(info, true); info->irq_attach = false; } if (info->irq_detach) { ret = sm5502_muic_cable_handler(info, false); info->irq_detach = false; } if (ret < 0) dev_err(info->dev, "failed to handle MUIC interrupt\n"); mutex_unlock(&info->mutex); } /* * Sets irq_attach or irq_detach in sm5502_muic_info and returns 0. * Returns -ESRCH if irq_type does not match registered IRQ for this dev type. */ static int sm5502_parse_irq(struct sm5502_muic_info *info, int irq_type) { switch (irq_type) { case SM5502_IRQ_INT1_ATTACH: info->irq_attach = true; break; case SM5502_IRQ_INT1_DETACH: info->irq_detach = true; break; case SM5502_IRQ_INT1_KP: case SM5502_IRQ_INT1_LKP: case SM5502_IRQ_INT1_LKR: case SM5502_IRQ_INT1_OVP_EVENT: case SM5502_IRQ_INT1_OCP_EVENT: case SM5502_IRQ_INT1_OVP_OCP_DIS: case SM5502_IRQ_INT2_VBUS_DET: case SM5502_IRQ_INT2_REV_ACCE: case SM5502_IRQ_INT2_ADC_CHG: case SM5502_IRQ_INT2_STUCK_KEY: case SM5502_IRQ_INT2_STUCK_KEY_RCV: case SM5502_IRQ_INT2_MHL: default: break; } return 0; } static irqreturn_t sm5502_muic_irq_handler(int irq, void *data) { struct sm5502_muic_info *info = data; int i, irq_type = -1, ret; for (i = 0; i < info->num_muic_irqs; i++) if (irq == info->muic_irqs[i].virq) irq_type = info->muic_irqs[i].irq; ret = sm5502_parse_irq(info, irq_type); if (ret < 0) { dev_warn(info->dev, "cannot handle is interrupt:%d\n", irq_type); return IRQ_HANDLED; } schedule_work(&info->irq_work); return IRQ_HANDLED; } static void sm5502_muic_detect_cable_wq(struct work_struct *work) { struct sm5502_muic_info *info = container_of(to_delayed_work(work), struct sm5502_muic_info, wq_detcable); int ret; /* Notify the state of connector cable or not */ ret = sm5502_muic_cable_handler(info, true); if (ret < 0) dev_warn(info->dev, "failed to detect cable state\n"); } static void sm5502_init_dev_type(struct sm5502_muic_info *info) { unsigned int reg_data, vendor_id, version_id; int i, ret; /* To test I2C, Print version_id and vendor_id of SM5502 */ ret = regmap_read(info->regmap, SM5502_REG_DEVICE_ID, ®_data); if (ret) { dev_err(info->dev, "failed to read DEVICE_ID register: %d\n", ret); return; } vendor_id = ((reg_data & SM5502_REG_DEVICE_ID_VENDOR_MASK) >> SM5502_REG_DEVICE_ID_VENDOR_SHIFT); version_id = ((reg_data & SM5502_REG_DEVICE_ID_VERSION_MASK) >> SM5502_REG_DEVICE_ID_VERSION_SHIFT); dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n", version_id, vendor_id); /* Initiazle the register of SM5502 device to bring-up */ for (i = 0; i < info->num_reg_data; i++) { unsigned int val = 0; if (!info->reg_data[i].invert) val |= ~info->reg_data[i].val; else val = info->reg_data[i].val; regmap_write(info->regmap, info->reg_data[i].reg, val); } } static int sm5022_muic_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct device_node *np = i2c->dev.of_node; struct sm5502_muic_info *info; int i, ret, irq_flags; if (!np) return -EINVAL; info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; i2c_set_clientdata(i2c, info); info->dev = &i2c->dev; info->i2c = i2c; info->irq = i2c->irq; info->muic_irqs = sm5502_muic_irqs; info->num_muic_irqs = ARRAY_SIZE(sm5502_muic_irqs); info->reg_data = sm5502_reg_data; info->num_reg_data = ARRAY_SIZE(sm5502_reg_data); mutex_init(&info->mutex); INIT_WORK(&info->irq_work, sm5502_muic_irq_work); info->regmap = devm_regmap_init_i2c(i2c, &sm5502_muic_regmap_config); if (IS_ERR(info->regmap)) { ret = PTR_ERR(info->regmap); dev_err(info->dev, "failed to allocate register map: %d\n", ret); return ret; } /* Support irq domain for SM5502 MUIC device */ irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED; ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0, &sm5502_muic_irq_chip, &info->irq_data); if (ret != 0) { dev_err(info->dev, "failed to request IRQ %d: %d\n", info->irq, ret); return ret; } for (i = 0; i < info->num_muic_irqs; i++) { struct muic_irq *muic_irq = &info->muic_irqs[i]; unsigned int virq = 0; virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq); if (virq <= 0) return -EINVAL; muic_irq->virq = virq; ret = devm_request_threaded_irq(info->dev, virq, NULL, sm5502_muic_irq_handler, IRQF_NO_SUSPEND, muic_irq->name, info); if (ret) { dev_err(info->dev, "failed: irq request (IRQ: %d, error :%d)\n", muic_irq->irq, ret); return ret; } } /* Allocate extcon device */ info->edev = devm_extcon_dev_allocate(info->dev, sm5502_extcon_cable); if (IS_ERR(info->edev)) { dev_err(info->dev, "failed to allocate memory for extcon\n"); return -ENOMEM; } info->edev->name = np->name; /* Register extcon device */ ret = devm_extcon_dev_register(info->dev, info->edev); if (ret) { dev_err(info->dev, "failed to register extcon device\n"); return ret; } /* * 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, sm5502_muic_detect_cable_wq); queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, msecs_to_jiffies(DELAY_MS_DEFAULT)); /* Initialize SM5502 device and print vendor id and version id */ sm5502_init_dev_type(info); return 0; } static int sm5502_muic_i2c_remove(struct i2c_client *i2c) { struct sm5502_muic_info *info = i2c_get_clientdata(i2c); regmap_del_irq_chip(info->irq, info->irq_data); return 0; } static struct of_device_id sm5502_dt_match[] = { { .compatible = "siliconmitus,sm5502-muic" }, { }, }; #ifdef CONFIG_PM_SLEEP static int sm5502_muic_suspend(struct device *dev) { struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); struct sm5502_muic_info *info = i2c_get_clientdata(i2c); enable_irq_wake(info->irq); return 0; } static int sm5502_muic_resume(struct device *dev) { struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); struct sm5502_muic_info *info = i2c_get_clientdata(i2c); disable_irq_wake(info->irq); return 0; } #endif static SIMPLE_DEV_PM_OPS(sm5502_muic_pm_ops, sm5502_muic_suspend, sm5502_muic_resume); static const struct i2c_device_id sm5502_i2c_id[] = { { "sm5502", TYPE_SM5502 }, { } }; MODULE_DEVICE_TABLE(i2c, sm5502_i2c_id); static struct i2c_driver sm5502_muic_i2c_driver = { .driver = { .name = "sm5502", .owner = THIS_MODULE, .pm = &sm5502_muic_pm_ops, .of_match_table = sm5502_dt_match, }, .probe = sm5022_muic_i2c_probe, .remove = sm5502_muic_i2c_remove, .id_table = sm5502_i2c_id, }; static int __init sm5502_muic_i2c_init(void) { return i2c_add_driver(&sm5502_muic_i2c_driver); } subsys_initcall(sm5502_muic_i2c_init); MODULE_DESCRIPTION("Silicon Mitus SM5502 Extcon driver"); MODULE_AUTHOR("Chanwoo Choi "); MODULE_LICENSE("GPL");