// SPDX-License-Identifier: GPL-2.0 // STMicroelectronics FTS Touchscreen device driver // // Copyright (c) 2017 Samsung Electronics Co., Ltd. // Copyright (c) 2017 Andi Shyti <[email protected]> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/input/mt.h> #include <linux/input/touchscreen.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> /* I2C commands */ #define STMFTS_READ_INFO … #define STMFTS_READ_STATUS … #define STMFTS_READ_ONE_EVENT … #define STMFTS_READ_ALL_EVENT … #define STMFTS_LATEST_EVENT … #define STMFTS_SLEEP_IN … #define STMFTS_SLEEP_OUT … #define STMFTS_MS_MT_SENSE_OFF … #define STMFTS_MS_MT_SENSE_ON … #define STMFTS_SS_HOVER_SENSE_OFF … #define STMFTS_SS_HOVER_SENSE_ON … #define STMFTS_MS_KEY_SENSE_OFF … #define STMFTS_MS_KEY_SENSE_ON … #define STMFTS_SYSTEM_RESET … #define STMFTS_CLEAR_EVENT_STACK … #define STMFTS_FULL_FORCE_CALIBRATION … #define STMFTS_MS_CX_TUNING … #define STMFTS_SS_CX_TUNING … /* events */ #define STMFTS_EV_NO_EVENT … #define STMFTS_EV_MULTI_TOUCH_DETECTED … #define STMFTS_EV_MULTI_TOUCH_ENTER … #define STMFTS_EV_MULTI_TOUCH_LEAVE … #define STMFTS_EV_MULTI_TOUCH_MOTION … #define STMFTS_EV_HOVER_ENTER … #define STMFTS_EV_HOVER_LEAVE … #define STMFTS_EV_HOVER_MOTION … #define STMFTS_EV_KEY_STATUS … #define STMFTS_EV_ERROR … #define STMFTS_EV_CONTROLLER_READY … #define STMFTS_EV_SLEEP_OUT_CONTROLLER_READY … #define STMFTS_EV_STATUS … #define STMFTS_EV_DEBUG … /* multi touch related event masks */ #define STMFTS_MASK_EVENT_ID … #define STMFTS_MASK_TOUCH_ID … #define STMFTS_MASK_LEFT_EVENT … #define STMFTS_MASK_X_MSB … #define STMFTS_MASK_Y_LSB … /* key related event masks */ #define STMFTS_MASK_KEY_NO_TOUCH … #define STMFTS_MASK_KEY_MENU … #define STMFTS_MASK_KEY_BACK … #define STMFTS_EVENT_SIZE … #define STMFTS_STACK_DEPTH … #define STMFTS_DATA_MAX_SIZE … #define STMFTS_MAX_FINGERS … #define STMFTS_DEV_NAME … enum stmfts_regulators { … }; struct stmfts_data { … }; static int stmfts_brightness_set(struct led_classdev *led_cdev, enum led_brightness value) { … } static enum led_brightness stmfts_brightness_get(struct led_classdev *led_cdev) { … } /* * We can't simply use i2c_smbus_read_i2c_block_data because we * need to read more than 255 bytes ( */ static int stmfts_read_events(struct stmfts_data *sdata) { … } static void stmfts_report_contact_event(struct stmfts_data *sdata, const u8 event[]) { … } static void stmfts_report_contact_release(struct stmfts_data *sdata, const u8 event[]) { … } static void stmfts_report_hover_event(struct stmfts_data *sdata, const u8 event[]) { … } static void stmfts_report_key_event(struct stmfts_data *sdata, const u8 event[]) { … } static void stmfts_parse_events(struct stmfts_data *sdata) { … } static irqreturn_t stmfts_irq_handler(int irq, void *dev) { … } static int stmfts_command(struct stmfts_data *sdata, const u8 cmd) { … } static int stmfts_input_open(struct input_dev *dev) { … } static void stmfts_input_close(struct input_dev *dev) { … } static ssize_t stmfts_sysfs_chip_id(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stmfts_sysfs_chip_version(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stmfts_sysfs_fw_ver(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stmfts_sysfs_config_id(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stmfts_sysfs_config_version(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stmfts_sysfs_read_status(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stmfts_sysfs_hover_enable_read(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t stmfts_sysfs_hover_enable_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(chip_id, 0444, stmfts_sysfs_chip_id, NULL); static DEVICE_ATTR(chip_version, 0444, stmfts_sysfs_chip_version, NULL); static DEVICE_ATTR(fw_ver, 0444, stmfts_sysfs_fw_ver, NULL); static DEVICE_ATTR(config_id, 0444, stmfts_sysfs_config_id, NULL); static DEVICE_ATTR(config_version, 0444, stmfts_sysfs_config_version, NULL); static DEVICE_ATTR(status, 0444, stmfts_sysfs_read_status, NULL); static DEVICE_ATTR(hover_enable, 0644, stmfts_sysfs_hover_enable_read, stmfts_sysfs_hover_enable_write); static struct attribute *stmfts_sysfs_attrs[] = …; ATTRIBUTE_GROUPS(…); static int stmfts_power_on(struct stmfts_data *sdata) { … } static void stmfts_power_off(void *data) { … } /* This function is void because I don't want to prevent using the touch key * only because the LEDs don't get registered */ static int stmfts_enable_led(struct stmfts_data *sdata) { … } static int stmfts_probe(struct i2c_client *client) { … } static void stmfts_remove(struct i2c_client *client) { … } static int stmfts_runtime_suspend(struct device *dev) { … } static int stmfts_runtime_resume(struct device *dev) { … } static int stmfts_suspend(struct device *dev) { … } static int stmfts_resume(struct device *dev) { … } static const struct dev_pm_ops stmfts_pm_ops = …; #ifdef CONFIG_OF static const struct of_device_id stmfts_of_match[] = …; MODULE_DEVICE_TABLE(of, stmfts_of_match); #endif static const struct i2c_device_id stmfts_id[] = …; MODULE_DEVICE_TABLE(i2c, stmfts_id); static struct i2c_driver stmfts_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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