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711 lines
19 KiB
711 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* extcon-sm5502.c - Silicon Mitus SM5502 extcon drvier to support USB switches |
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* |
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* Copyright (c) 2014 Samsung Electronics Co., Ltd |
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* Author: Chanwoo Choi <[email protected]> |
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*/ |
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#include <linux/err.h> |
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#include <linux/i2c.h> |
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#include <linux/interrupt.h> |
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#include <linux/irqdomain.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/regmap.h> |
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#include <linux/slab.h> |
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#include <linux/extcon-provider.h> |
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#include "extcon-sm5502.h" |
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#define DELAY_MS_DEFAULT 17000 /* unit: millisecond */ |
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struct muic_irq { |
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unsigned int irq; |
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const char *name; |
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unsigned int virq; |
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}; |
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struct reg_data { |
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u8 reg; |
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unsigned int val; |
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bool invert; |
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}; |
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struct sm5502_muic_info { |
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struct device *dev; |
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struct extcon_dev *edev; |
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struct i2c_client *i2c; |
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struct regmap *regmap; |
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struct regmap_irq_chip_data *irq_data; |
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struct muic_irq *muic_irqs; |
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unsigned int num_muic_irqs; |
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int irq; |
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bool irq_attach; |
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bool irq_detach; |
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struct work_struct irq_work; |
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struct reg_data *reg_data; |
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unsigned int num_reg_data; |
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struct mutex mutex; |
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/* |
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* Use delayed workqueue to detect cable state and then |
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* notify cable state to notifiee/platform through uevent. |
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* After completing the booting of platform, the extcon provider |
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* driver should notify cable state to upper layer. |
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*/ |
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struct delayed_work wq_detcable; |
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}; |
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/* Default value of SM5502 register to bring up MUIC device. */ |
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static struct reg_data sm5502_reg_data[] = { |
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{ |
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.reg = SM5502_REG_RESET, |
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.val = SM5502_REG_RESET_MASK, |
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.invert = true, |
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}, { |
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.reg = SM5502_REG_CONTROL, |
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.val = SM5502_REG_CONTROL_MASK_INT_MASK, |
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.invert = false, |
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}, { |
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.reg = SM5502_REG_INTMASK1, |
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.val = SM5502_REG_INTM1_KP_MASK |
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| SM5502_REG_INTM1_LKP_MASK |
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| SM5502_REG_INTM1_LKR_MASK, |
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.invert = true, |
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}, { |
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.reg = SM5502_REG_INTMASK2, |
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.val = SM5502_REG_INTM2_VBUS_DET_MASK |
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| SM5502_REG_INTM2_REV_ACCE_MASK |
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| SM5502_REG_INTM2_ADC_CHG_MASK |
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| SM5502_REG_INTM2_STUCK_KEY_MASK |
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| SM5502_REG_INTM2_STUCK_KEY_RCV_MASK |
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| SM5502_REG_INTM2_MHL_MASK, |
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.invert = true, |
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}, |
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{ } |
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}; |
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/* List of detectable cables */ |
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static const unsigned int sm5502_extcon_cable[] = { |
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EXTCON_USB, |
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EXTCON_USB_HOST, |
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EXTCON_CHG_USB_SDP, |
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EXTCON_CHG_USB_DCP, |
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EXTCON_NONE, |
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}; |
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/* Define supported accessory type */ |
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enum sm5502_muic_acc_type { |
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SM5502_MUIC_ADC_GROUND = 0x0, |
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SM5502_MUIC_ADC_SEND_END_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S1_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S2_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S3_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S4_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S5_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S6_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S7_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S8_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S9_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S10_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S11_BUTTON, |
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SM5502_MUIC_ADC_REMOTE_S12_BUTTON, |
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SM5502_MUIC_ADC_RESERVED_ACC_1, |
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SM5502_MUIC_ADC_RESERVED_ACC_2, |
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SM5502_MUIC_ADC_RESERVED_ACC_3, |
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SM5502_MUIC_ADC_RESERVED_ACC_4, |
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SM5502_MUIC_ADC_RESERVED_ACC_5, |
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SM5502_MUIC_ADC_AUDIO_TYPE2, |
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SM5502_MUIC_ADC_PHONE_POWERED_DEV, |
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SM5502_MUIC_ADC_TTY_CONVERTER, |
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SM5502_MUIC_ADC_UART_CABLE, |
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SM5502_MUIC_ADC_TYPE1_CHARGER, |
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SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB, |
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SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB, |
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SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE, |
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SM5502_MUIC_ADC_TYPE2_CHARGER, |
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SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART, |
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SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART, |
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SM5502_MUIC_ADC_AUDIO_TYPE1, |
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SM5502_MUIC_ADC_OPEN = 0x1f, |
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/* |
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* The below accessories have same ADC value (0x1f or 0x1e). |
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* So, Device type1 is used to separate specific accessory. |
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*/ |
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/* |---------|--ADC| */ |
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/* | [7:5]|[4:0]| */ |
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SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */ |
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SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END = 0x5e, /* | 010|11110| */ |
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/* |Dev Type1|--ADC| */ |
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SM5502_MUIC_ADC_OPEN_USB = 0x5f, /* | 010|11111| */ |
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SM5502_MUIC_ADC_OPEN_TA = 0xdf, /* | 110|11111| */ |
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SM5502_MUIC_ADC_OPEN_USB_OTG = 0xff, /* | 111|11111| */ |
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}; |
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/* List of supported interrupt for SM5502 */ |
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static struct muic_irq sm5502_muic_irqs[] = { |
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{ SM5502_IRQ_INT1_ATTACH, "muic-attach" }, |
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{ SM5502_IRQ_INT1_DETACH, "muic-detach" }, |
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{ SM5502_IRQ_INT1_KP, "muic-kp" }, |
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{ SM5502_IRQ_INT1_LKP, "muic-lkp" }, |
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{ SM5502_IRQ_INT1_LKR, "muic-lkr" }, |
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{ SM5502_IRQ_INT1_OVP_EVENT, "muic-ovp-event" }, |
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{ SM5502_IRQ_INT1_OCP_EVENT, "muic-ocp-event" }, |
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{ SM5502_IRQ_INT1_OVP_OCP_DIS, "muic-ovp-ocp-dis" }, |
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{ SM5502_IRQ_INT2_VBUS_DET, "muic-vbus-det" }, |
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{ SM5502_IRQ_INT2_REV_ACCE, "muic-rev-acce" }, |
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{ SM5502_IRQ_INT2_ADC_CHG, "muic-adc-chg" }, |
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{ SM5502_IRQ_INT2_STUCK_KEY, "muic-stuck-key" }, |
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{ SM5502_IRQ_INT2_STUCK_KEY_RCV, "muic-stuck-key-rcv" }, |
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{ SM5502_IRQ_INT2_MHL, "muic-mhl" }, |
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}; |
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/* Define interrupt list of SM5502 to register regmap_irq */ |
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static const struct regmap_irq sm5502_irqs[] = { |
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/* INT1 interrupts */ |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_ATTACH_MASK, }, |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_DETACH_MASK, }, |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_KP_MASK, }, |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKP_MASK, }, |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKR_MASK, }, |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_EVENT_MASK, }, |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_OCP_EVENT_MASK, }, |
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{ .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_OCP_DIS_MASK, }, |
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/* INT2 interrupts */ |
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{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_VBUS_DET_MASK,}, |
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{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_REV_ACCE_MASK, }, |
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{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_ADC_CHG_MASK, }, |
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{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_MASK, }, |
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{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK, }, |
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{ .reg_offset = 1, .mask = SM5502_IRQ_INT2_MHL_MASK, }, |
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}; |
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static const struct regmap_irq_chip sm5502_muic_irq_chip = { |
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.name = "sm5502", |
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.status_base = SM5502_REG_INT1, |
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.mask_base = SM5502_REG_INTMASK1, |
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.mask_invert = false, |
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.num_regs = 2, |
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.irqs = sm5502_irqs, |
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.num_irqs = ARRAY_SIZE(sm5502_irqs), |
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}; |
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/* Define regmap configuration of SM5502 for I2C communication */ |
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static bool sm5502_muic_volatile_reg(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case SM5502_REG_INTMASK1: |
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case SM5502_REG_INTMASK2: |
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return true; |
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default: |
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break; |
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} |
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return false; |
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} |
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static const struct regmap_config sm5502_muic_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.volatile_reg = sm5502_muic_volatile_reg, |
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.max_register = SM5502_REG_END, |
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}; |
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/* Change DM_CON/DP_CON/VBUSIN switch according to cable type */ |
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static int sm5502_muic_set_path(struct sm5502_muic_info *info, |
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unsigned int con_sw, unsigned int vbus_sw, |
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bool attached) |
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{ |
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int ret; |
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if (!attached) { |
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con_sw = DM_DP_SWITCH_OPEN; |
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vbus_sw = VBUSIN_SWITCH_OPEN; |
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} |
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switch (con_sw) { |
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case DM_DP_SWITCH_OPEN: |
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case DM_DP_SWITCH_USB: |
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case DM_DP_SWITCH_AUDIO: |
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case DM_DP_SWITCH_UART: |
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ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1, |
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SM5502_REG_MANUAL_SW1_DP_MASK | |
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SM5502_REG_MANUAL_SW1_DM_MASK, |
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con_sw); |
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if (ret < 0) { |
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dev_err(info->dev, |
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"cannot update DM_CON/DP_CON switch\n"); |
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return ret; |
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} |
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break; |
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default: |
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dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n", |
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con_sw); |
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return -EINVAL; |
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} |
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switch (vbus_sw) { |
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case VBUSIN_SWITCH_OPEN: |
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case VBUSIN_SWITCH_VBUSOUT: |
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case VBUSIN_SWITCH_MIC: |
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case VBUSIN_SWITCH_VBUSOUT_WITH_USB: |
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ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1, |
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SM5502_REG_MANUAL_SW1_VBUSIN_MASK, |
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vbus_sw); |
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if (ret < 0) { |
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dev_err(info->dev, |
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"cannot update VBUSIN switch\n"); |
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return ret; |
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} |
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break; |
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default: |
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dev_err(info->dev, "Unknown VBUS switch type (%d)\n", vbus_sw); |
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return -EINVAL; |
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} |
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return 0; |
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} |
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/* Return cable type of attached or detached accessories */ |
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static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info) |
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{ |
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unsigned int cable_type, adc, dev_type1; |
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int ret; |
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/* Read ADC value according to external cable or button */ |
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ret = regmap_read(info->regmap, SM5502_REG_ADC, &adc); |
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if (ret) { |
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dev_err(info->dev, "failed to read ADC register\n"); |
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return ret; |
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} |
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/* |
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* If ADC is SM5502_MUIC_ADC_GROUND(0x0), external cable hasn't |
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* connected with to MUIC device. |
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*/ |
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cable_type = adc & SM5502_REG_ADC_MASK; |
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if (cable_type == SM5502_MUIC_ADC_GROUND) |
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return SM5502_MUIC_ADC_GROUND; |
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switch (cable_type) { |
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case SM5502_MUIC_ADC_GROUND: |
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case SM5502_MUIC_ADC_SEND_END_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S1_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S2_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S3_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S4_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S5_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S6_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S7_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S8_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S9_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S10_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S11_BUTTON: |
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case SM5502_MUIC_ADC_REMOTE_S12_BUTTON: |
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case SM5502_MUIC_ADC_RESERVED_ACC_1: |
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case SM5502_MUIC_ADC_RESERVED_ACC_2: |
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case SM5502_MUIC_ADC_RESERVED_ACC_3: |
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case SM5502_MUIC_ADC_RESERVED_ACC_4: |
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case SM5502_MUIC_ADC_RESERVED_ACC_5: |
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case SM5502_MUIC_ADC_AUDIO_TYPE2: |
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case SM5502_MUIC_ADC_PHONE_POWERED_DEV: |
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case SM5502_MUIC_ADC_TTY_CONVERTER: |
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case SM5502_MUIC_ADC_UART_CABLE: |
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case SM5502_MUIC_ADC_TYPE1_CHARGER: |
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case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB: |
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case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB: |
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case SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE: |
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case SM5502_MUIC_ADC_TYPE2_CHARGER: |
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case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART: |
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case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART: |
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break; |
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case SM5502_MUIC_ADC_AUDIO_TYPE1: |
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/* |
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* Check whether cable type is |
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* SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE |
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* or SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END |
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* by using Button event. |
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*/ |
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break; |
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case SM5502_MUIC_ADC_OPEN: |
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ret = regmap_read(info->regmap, SM5502_REG_DEV_TYPE1, |
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&dev_type1); |
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if (ret) { |
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dev_err(info->dev, "failed to read DEV_TYPE1 reg\n"); |
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return ret; |
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} |
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switch (dev_type1) { |
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case SM5502_REG_DEV_TYPE1_USB_SDP_MASK: |
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cable_type = SM5502_MUIC_ADC_OPEN_USB; |
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break; |
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case SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK: |
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cable_type = SM5502_MUIC_ADC_OPEN_TA; |
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break; |
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case SM5502_REG_DEV_TYPE1_USB_OTG_MASK: |
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cable_type = SM5502_MUIC_ADC_OPEN_USB_OTG; |
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break; |
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default: |
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dev_dbg(info->dev, |
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"cannot identify the cable type: adc(0x%x)\n", |
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adc); |
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return -EINVAL; |
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} |
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break; |
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default: |
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dev_err(info->dev, |
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"failed to identify the cable type: adc(0x%x)\n", adc); |
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return -EINVAL; |
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} |
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return cable_type; |
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} |
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static int sm5502_muic_cable_handler(struct sm5502_muic_info *info, |
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bool attached) |
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{ |
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static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND; |
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unsigned int cable_type = SM5502_MUIC_ADC_GROUND; |
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unsigned int con_sw = DM_DP_SWITCH_OPEN; |
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unsigned int vbus_sw = VBUSIN_SWITCH_OPEN; |
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unsigned int id; |
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int ret; |
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/* Get the type of attached or detached cable */ |
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if (attached) |
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cable_type = sm5502_muic_get_cable_type(info); |
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else |
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cable_type = prev_cable_type; |
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prev_cable_type = cable_type; |
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switch (cable_type) { |
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case SM5502_MUIC_ADC_OPEN_USB: |
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id = EXTCON_USB; |
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con_sw = DM_DP_SWITCH_USB; |
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vbus_sw = VBUSIN_SWITCH_VBUSOUT_WITH_USB; |
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break; |
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case SM5502_MUIC_ADC_OPEN_TA: |
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id = EXTCON_CHG_USB_DCP; |
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con_sw = DM_DP_SWITCH_OPEN; |
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vbus_sw = VBUSIN_SWITCH_VBUSOUT; |
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break; |
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case SM5502_MUIC_ADC_OPEN_USB_OTG: |
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id = EXTCON_USB_HOST; |
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con_sw = DM_DP_SWITCH_USB; |
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vbus_sw = VBUSIN_SWITCH_OPEN; |
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break; |
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default: |
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dev_dbg(info->dev, |
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"cannot handle this cable_type (0x%x)\n", cable_type); |
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return 0; |
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} |
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/* Change internal hardware path(DM_CON/DP_CON, VBUSIN) */ |
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ret = sm5502_muic_set_path(info, con_sw, vbus_sw, attached); |
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if (ret < 0) |
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return ret; |
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|
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/* Change the state of external accessory */ |
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extcon_set_state_sync(info->edev, id, attached); |
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if (id == EXTCON_USB) |
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extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, |
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attached); |
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return 0; |
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} |
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static void sm5502_muic_irq_work(struct work_struct *work) |
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{ |
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struct sm5502_muic_info *info = container_of(work, |
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struct sm5502_muic_info, irq_work); |
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int ret = 0; |
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|
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if (!info->edev) |
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return; |
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mutex_lock(&info->mutex); |
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/* Detect attached or detached cables */ |
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if (info->irq_attach) { |
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ret = sm5502_muic_cable_handler(info, true); |
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info->irq_attach = false; |
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} |
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if (info->irq_detach) { |
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ret = sm5502_muic_cable_handler(info, false); |
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info->irq_detach = false; |
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} |
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if (ret < 0) |
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dev_err(info->dev, "failed to handle MUIC interrupt\n"); |
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|
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mutex_unlock(&info->mutex); |
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} |
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/* |
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* Sets irq_attach or irq_detach in sm5502_muic_info and returns 0. |
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* Returns -ESRCH if irq_type does not match registered IRQ for this dev type. |
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*/ |
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static int sm5502_parse_irq(struct sm5502_muic_info *info, int irq_type) |
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{ |
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switch (irq_type) { |
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case SM5502_IRQ_INT1_ATTACH: |
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info->irq_attach = true; |
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break; |
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case SM5502_IRQ_INT1_DETACH: |
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info->irq_detach = true; |
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break; |
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case SM5502_IRQ_INT1_KP: |
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case SM5502_IRQ_INT1_LKP: |
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case SM5502_IRQ_INT1_LKR: |
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case SM5502_IRQ_INT1_OVP_EVENT: |
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case SM5502_IRQ_INT1_OCP_EVENT: |
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case SM5502_IRQ_INT1_OVP_OCP_DIS: |
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case SM5502_IRQ_INT2_VBUS_DET: |
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case SM5502_IRQ_INT2_REV_ACCE: |
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case SM5502_IRQ_INT2_ADC_CHG: |
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case SM5502_IRQ_INT2_STUCK_KEY: |
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case SM5502_IRQ_INT2_STUCK_KEY_RCV: |
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case SM5502_IRQ_INT2_MHL: |
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default: |
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break; |
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} |
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|
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return 0; |
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} |
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|
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static irqreturn_t sm5502_muic_irq_handler(int irq, void *data) |
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{ |
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struct sm5502_muic_info *info = data; |
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int i, irq_type = -1, ret; |
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|
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for (i = 0; i < info->num_muic_irqs; i++) |
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if (irq == info->muic_irqs[i].virq) |
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irq_type = info->muic_irqs[i].irq; |
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|
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ret = sm5502_parse_irq(info, irq_type); |
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if (ret < 0) { |
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dev_warn(info->dev, "cannot handle is interrupt:%d\n", |
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irq_type); |
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return IRQ_HANDLED; |
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} |
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schedule_work(&info->irq_work); |
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|
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return IRQ_HANDLED; |
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} |
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|
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static void sm5502_muic_detect_cable_wq(struct work_struct *work) |
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{ |
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struct sm5502_muic_info *info = container_of(to_delayed_work(work), |
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struct sm5502_muic_info, wq_detcable); |
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int ret; |
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|
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/* Notify the state of connector cable or not */ |
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ret = sm5502_muic_cable_handler(info, true); |
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if (ret < 0) |
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dev_warn(info->dev, "failed to detect cable state\n"); |
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} |
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|
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static void sm5502_init_dev_type(struct sm5502_muic_info *info) |
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{ |
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unsigned int reg_data, vendor_id, version_id; |
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int i, ret; |
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|
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/* To test I2C, Print version_id and vendor_id of SM5502 */ |
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ret = regmap_read(info->regmap, SM5502_REG_DEVICE_ID, ®_data); |
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if (ret) { |
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dev_err(info->dev, |
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"failed to read DEVICE_ID register: %d\n", ret); |
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return; |
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} |
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|
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vendor_id = ((reg_data & SM5502_REG_DEVICE_ID_VENDOR_MASK) >> |
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SM5502_REG_DEVICE_ID_VENDOR_SHIFT); |
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version_id = ((reg_data & SM5502_REG_DEVICE_ID_VERSION_MASK) >> |
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SM5502_REG_DEVICE_ID_VERSION_SHIFT); |
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|
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dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n", |
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version_id, vendor_id); |
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|
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/* Initiazle the register of SM5502 device to bring-up */ |
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for (i = 0; i < info->num_reg_data; i++) { |
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unsigned int val = 0; |
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|
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if (!info->reg_data[i].invert) |
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val |= ~info->reg_data[i].val; |
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else |
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val = info->reg_data[i].val; |
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regmap_write(info->regmap, info->reg_data[i].reg, val); |
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} |
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} |
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|
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static int sm5022_muic_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct device_node *np = i2c->dev.of_node; |
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struct sm5502_muic_info *info; |
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int i, ret, irq_flags; |
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|
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if (!np) |
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return -EINVAL; |
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|
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info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL); |
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if (!info) |
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return -ENOMEM; |
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i2c_set_clientdata(i2c, info); |
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|
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info->dev = &i2c->dev; |
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info->i2c = i2c; |
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info->irq = i2c->irq; |
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info->muic_irqs = sm5502_muic_irqs; |
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info->num_muic_irqs = ARRAY_SIZE(sm5502_muic_irqs); |
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info->reg_data = sm5502_reg_data; |
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info->num_reg_data = ARRAY_SIZE(sm5502_reg_data); |
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|
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mutex_init(&info->mutex); |
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|
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INIT_WORK(&info->irq_work, sm5502_muic_irq_work); |
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|
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info->regmap = devm_regmap_init_i2c(i2c, &sm5502_muic_regmap_config); |
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if (IS_ERR(info->regmap)) { |
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ret = PTR_ERR(info->regmap); |
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dev_err(info->dev, "failed to allocate register map: %d\n", |
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ret); |
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return ret; |
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} |
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|
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/* Support irq domain for SM5502 MUIC device */ |
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irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED; |
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ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0, |
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&sm5502_muic_irq_chip, &info->irq_data); |
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if (ret != 0) { |
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dev_err(info->dev, "failed to request IRQ %d: %d\n", |
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info->irq, ret); |
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return ret; |
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} |
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|
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for (i = 0; i < info->num_muic_irqs; i++) { |
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struct muic_irq *muic_irq = &info->muic_irqs[i]; |
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int virq = 0; |
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|
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virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq); |
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if (virq <= 0) |
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return -EINVAL; |
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muic_irq->virq = virq; |
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|
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ret = devm_request_threaded_irq(info->dev, virq, NULL, |
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sm5502_muic_irq_handler, |
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IRQF_NO_SUSPEND | IRQF_ONESHOT, |
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muic_irq->name, info); |
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if (ret) { |
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dev_err(info->dev, |
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"failed: irq request (IRQ: %d, error :%d)\n", |
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muic_irq->irq, ret); |
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return ret; |
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} |
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} |
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|
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/* Allocate extcon device */ |
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info->edev = devm_extcon_dev_allocate(info->dev, sm5502_extcon_cable); |
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if (IS_ERR(info->edev)) { |
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dev_err(info->dev, "failed to allocate memory for extcon\n"); |
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return -ENOMEM; |
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} |
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|
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/* Register extcon device */ |
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ret = devm_extcon_dev_register(info->dev, info->edev); |
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if (ret) { |
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dev_err(info->dev, "failed to register extcon device\n"); |
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return ret; |
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} |
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|
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/* |
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* Detect accessory after completing the initialization of platform |
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* |
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* - Use delayed workqueue to detect cable state and then |
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* notify cable state to notifiee/platform through uevent. |
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* After completing the booting of platform, the extcon provider |
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* driver should notify cable state to upper layer. |
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*/ |
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INIT_DELAYED_WORK(&info->wq_detcable, sm5502_muic_detect_cable_wq); |
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queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, |
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msecs_to_jiffies(DELAY_MS_DEFAULT)); |
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|
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/* Initialize SM5502 device and print vendor id and version id */ |
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sm5502_init_dev_type(info); |
|
|
|
return 0; |
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} |
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|
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static int sm5502_muic_i2c_remove(struct i2c_client *i2c) |
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{ |
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struct sm5502_muic_info *info = i2c_get_clientdata(i2c); |
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|
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regmap_del_irq_chip(info->irq, info->irq_data); |
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|
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return 0; |
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} |
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|
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static const struct of_device_id sm5502_dt_match[] = { |
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{ .compatible = "siliconmitus,sm5502-muic" }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(of, sm5502_dt_match); |
|
|
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#ifdef CONFIG_PM_SLEEP |
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static int sm5502_muic_suspend(struct device *dev) |
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{ |
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struct i2c_client *i2c = to_i2c_client(dev); |
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struct sm5502_muic_info *info = i2c_get_clientdata(i2c); |
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|
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enable_irq_wake(info->irq); |
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|
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return 0; |
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} |
|
|
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static int sm5502_muic_resume(struct device *dev) |
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{ |
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struct i2c_client *i2c = to_i2c_client(dev); |
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struct sm5502_muic_info *info = i2c_get_clientdata(i2c); |
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|
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disable_irq_wake(info->irq); |
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|
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return 0; |
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} |
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#endif |
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|
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static SIMPLE_DEV_PM_OPS(sm5502_muic_pm_ops, |
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sm5502_muic_suspend, sm5502_muic_resume); |
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|
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static const struct i2c_device_id sm5502_i2c_id[] = { |
|
{ "sm5502", TYPE_SM5502 }, |
|
{ } |
|
}; |
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MODULE_DEVICE_TABLE(i2c, sm5502_i2c_id); |
|
|
|
static struct i2c_driver sm5502_muic_i2c_driver = { |
|
.driver = { |
|
.name = "sm5502", |
|
.pm = &sm5502_muic_pm_ops, |
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.of_match_table = sm5502_dt_match, |
|
}, |
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.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 <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
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