// SPDX-License-Identifier: GPL-2.0 /* * * extcon-rtk-type-c.c - Realtek Extcon Type C driver * * Copyright (C) 2023 Realtek Semiconductor Corporation * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/io.h> #include <linux/interrupt.h> #include <linux/syscalls.h> #include <linux/suspend.h> #include <linux/debugfs.h> #include <linux/extcon.h> #include <linux/extcon-provider.h> #include <linux/sys_soc.h> #include <linux/nvmem-consumer.h> #include <linux/gpio/consumer.h> #include <linux/usb/otg.h> #include <linux/usb/typec.h> struct cc_param { … }; struct type_c_cfg { … }; struct type_c_data { … }; /* Type C register offset */ #define USB_TYPEC_CTRL_CC1_0 … #define USB_TYPEC_CTRL_CC1_1 … #define USB_TYPEC_CTRL_CC2_0 … #define USB_TYPEC_CTRL_CC2_1 … #define USB_TYPEC_STS … #define USB_TYPEC_CTRL … #define USB_DBUS_PWR_CTRL … #define ENABLE_CC1 … #define ENABLE_CC2 … #define DISABLE_CC … /* Bit mapping USB_TYPEC_CTRL_CC1_0 and USB_TYPEC_CTRL_CC2_0 */ #define PLR_EN … #define CC_SWITCH_MASK … #define CC_CODE_MASK … #define rp4pk_code(val) … #define code_rp4pk(val) … #define rp36k_code(val) … #define code_rp36k(val) … #define rp12k_code(val) … #define code_rp12k(val) … #define rd_code(val) … #define code_rd(val) … #define dfp_mode(val) … #define EN_RP4P7K … #define EN_RP36K … #define EN_RP12K … #define EN_RD … #define EN_CC_DET … #define CC_MODE_UFP … #define CC_MODE_DFP_USB … #define CC_MODE_DFP_1_5 … #define CC_MODE_DFP_3_0 … /* * PARAMETER_V0: * Realtek Kylin rtd1295 * Realtek Hercules rtd1395 * Realtek Thor rtd1619 * Realtek Hank rtd1319 * Realtek Groot rtd1312c * PARAMETER_V1: * Realtek Stark rtd1619b * Realtek Parker rtd1319d * Realtek Danvers rtd1315e */ enum parameter_version { … }; /* Bit mapping USB_TYPEC_CTRL_CC1_1 and USB_TYPEC_CTRL_CC2_1 */ #define V0_vref_2p6v(val) … #define V0_vref_1p23v(val) … #define V0_vref_0p8v(val) … #define V0_vref_0p66v(val) … #define V0_vref_0p4v(val) … #define V0_vref_0p2v(val) … #define V0_vref_1_1p6v(val) … #define V0_vref_0_1p6v(val) … #define V0_decode_2p6v(val) … #define V0_decode_1p23v(val) … #define V0_decode_0p8v(val) … #define V0_decode_0p66v(val) … #define V0_decode_0p4v(val) … #define V0_decode_0p2v(val) … #define V0_decode_1_1p6v(val) … #define V0_decode_0_1p6v(val) … /* new Bit mapping USB_TYPEC_CTRL_CC1_1 and USB_TYPEC_CTRL_CC2_1 */ #define V1_vref_2p6v(val) … #define V1_vref_1p23v(val) … #define V1_vref_0p8v(val) … #define V1_vref_0p66v(val) … #define V1_vref_0p4v(val) … #define V1_vref_0p2v(val) … #define V1_vref_1_1p6v(val) … #define V1_vref_0_1p6v(val) … #define V1_decode_2p6v(val) … #define V1_decode_1p23v(val) … #define V1_decode_0p8v(val) … #define V1_decode_0p66v(val) … #define V1_decode_0p4v(val) … #define V1_decode_0p2v(val) … #define V1_decode_1_1p6v(val) … #define V1_decode_0_1p6v(val) … /* Bit mapping USB_TYPEC_STS */ #define DET_STS … #define CC1_DET_STS … #define CC2_DET_STS … #define DET_STS_RA … #define DET_STS_RD … #define DET_STS_RP … #define CC1_DET_STS_RA … #define CC1_DET_STS_RD … #define CC1_DET_STS_RP … #define CC2_DET_STS_RA … #define CC2_DET_STS_RD … #define CC2_DET_STS_RP … /* Bit mapping USB_TYPEC_CTRL */ #define CC2_INT_EN … #define CC1_INT_EN … #define CC2_INT_STS … #define CC1_INT_STS … #define DEBOUNCE_TIME_MASK … #define DEBOUNCE_EN … #define ENABLE_TYPE_C_DETECT … #define ALL_CC_INT_STS … /* Parameter */ #define DETECT_TIME … static const unsigned int usb_type_c_cable[] = …; enum usb_data_roles { … }; static const struct soc_device_attribute rtk_soc_kylin[] = …; static int rtd129x_switch_type_c_plug_config(struct type_c_data *type_c, int dr_mode, int cc) { … } static inline void switch_type_c_plug_config(struct type_c_data *type_c, int dr_mode, int cc) { … } static void switch_type_c_dr_mode(struct type_c_data *type_c, int dr_mode, int cc) { … } /* connector attached/detached */ static int connector_attached(struct type_c_data *type_c, u32 cc, int dr_mode) { … } static int connector_detached(struct type_c_data *type_c, u32 cc, int dr_mode) { … } /* detect host device switch */ static int __detect_host_device(struct type_c_data *type_c, u32 rp_or_rd_en) { … } static int detect_device(struct type_c_data *type_c) { … } static int detect_host(struct type_c_data *type_c) { … } static int host_device_switch_detection(struct type_c_data *type_c) { … } static int detect_type_c_state(struct type_c_data *type_c) { … } static void host_device_switch(struct work_struct *work) { … } static irqreturn_t type_c_detect_irq(int irq, void *__data) { … } static int type_c_port_dr_set(struct typec_port *port, enum typec_data_role role) { … } static const struct typec_operations type_c_port_ops = …; #ifdef CONFIG_DEBUG_FS static int type_c_parameter_show(struct seq_file *s, void *unused) { … } static int type_c_parameter_open(struct inode *inode, struct file *file) { … } static const struct file_operations type_c_parameter_fops = …; static int type_c_status_show(struct seq_file *s, void *unused) { … } static int type_c_status_open(struct inode *inode, struct file *file) { … } static const struct file_operations type_c_status_fops = …; static inline void create_debug_files(struct type_c_data *type_c) { … } static inline void remove_debug_files(struct type_c_data *type_c) { … } #else static inline void create_debug_files(struct type_c_data *type_c) { } static inline void remove_debug_files(struct type_c_data *type_c) { } #endif /* CONFIG_DEBUG_FS */ /* Init and probe */ static inline s8 get_value(s8 value) { … } static int __updated_type_c_parameter_by_efuse(struct type_c_data *type_c) { … } static int __updated_type_c_parameter_by_efuse_v2(struct type_c_data *type_c) { … } static void get_default_type_c_parameter(struct type_c_data *type_c) { … } static int setup_type_c_parameter(struct type_c_data *type_c) { … } static int extcon_rtk_type_c_init(struct type_c_data *type_c) { … } static int extcon_rtk_type_c_edev_register(struct type_c_data *type_c) { … } static int extcon_rtk_type_c_probe(struct platform_device *pdev) { … } static void extcon_rtk_type_c_remove(struct platform_device *pdev) { … } static const struct type_c_cfg rtd1295_type_c_cfg = …; static const struct type_c_cfg rtd1395_type_c_cfg = …; static const struct type_c_cfg rtd1619_type_c_cfg = …; static const struct type_c_cfg rtd1319_type_c_cfg = …; static const struct type_c_cfg rtd1312c_type_c_cfg = …; static const struct type_c_cfg rtd1619b_type_c_cfg = …; static const struct type_c_cfg rtd1319d_type_c_cfg = …; static const struct type_c_cfg rtd1315e_type_c_cfg = …; static const struct of_device_id extcon_rtk_type_c_match[] = …; MODULE_DEVICE_TABLE(of, extcon_rtk_type_c_match); #ifdef CONFIG_PM_SLEEP static int extcon_rtk_type_c_prepare(struct device *dev) { … } static void extcon_rtk_type_c_complete(struct device *dev) { … } static int extcon_rtk_type_c_suspend(struct device *dev) { … } static int extcon_rtk_type_c_resume(struct device *dev) { … } static const struct dev_pm_ops extcon_rtk_type_c_pm_ops = …; #define DEV_PM_OPS … #else #define DEV_PM_OPS … #endif /* CONFIG_PM_SLEEP */ static struct platform_driver extcon_rtk_type_c_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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