// SPDX-License-Identifier: GPL-2.0 // Samsung S6SY761 Touchscreen device driver // // Copyright (c) 2017 Samsung Electronics Co., Ltd. // Copyright (c) 2017 Andi Shyti <[email protected]> #include <linux/unaligned.h> #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/module.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> /* commands */ #define S6SY761_SENSE_ON … #define S6SY761_SENSE_OFF … #define S6SY761_TOUCH_FUNCTION … #define S6SY761_FIRMWARE_INTEGRITY … #define S6SY761_PANEL_INFO … #define S6SY761_DEVICE_ID … #define S6SY761_BOOT_STATUS … #define S6SY761_READ_ONE_EVENT … #define S6SY761_READ_ALL_EVENT … #define S6SY761_CLEAR_EVENT_STACK … #define S6SY761_APPLICATION_MODE … /* events */ #define S6SY761_EVENT_INFO … #define S6SY761_EVENT_VENDOR_INFO … /* info */ #define S6SY761_INFO_BOOT_COMPLETE … /* firmware status */ #define S6SY761_FW_OK … /* * the functionalities are put as a reference * as in the device I am using none of them * works therefore not used in this driver yet. */ /* touchscreen functionalities */ #define S6SY761_MASK_TOUCH … #define S6SY761_MASK_HOVER … #define S6SY761_MASK_COVER … #define S6SY761_MASK_GLOVE … #define S6SY761_MASK_STYLUS … #define S6SY761_MASK_PALM … #define S6SY761_MASK_WET … #define S6SY761_MASK_PROXIMITY … /* boot status (BS) */ #define S6SY761_BS_BOOT_LOADER … #define S6SY761_BS_APPLICATION … /* event id */ #define S6SY761_EVENT_ID_COORDINATE … #define S6SY761_EVENT_ID_STATUS … /* event register masks */ #define S6SY761_MASK_TOUCH_STATE … #define S6SY761_MASK_TID … #define S6SY761_MASK_EID … #define S6SY761_MASK_X … #define S6SY761_MASK_Y … #define S6SY761_MASK_Z … #define S6SY761_MASK_LEFT_EVENTS … #define S6SY761_MASK_TOUCH_TYPE … /* event touch state values */ #define S6SY761_TS_NONE … #define S6SY761_TS_PRESS … #define S6SY761_TS_MOVE … #define S6SY761_TS_RELEASE … /* application modes */ #define S6SY761_APP_NORMAL … #define S6SY761_APP_LOW_POWER … #define S6SY761_APP_TEST … #define S6SY761_APP_FLASH … #define S6SY761_APP_SLEEP … #define S6SY761_EVENT_SIZE … #define S6SY761_EVENT_COUNT … #define S6SY761_DEVID_SIZE … #define S6SY761_PANEL_ID_SIZE … #define S6SY761_TS_STATUS_SIZE … #define S6SY761_MAX_FINGERS … #define S6SY761_DEV_NAME … enum s6sy761_regulators { … }; struct s6sy761_data { … }; /* * We can't simply use i2c_smbus_read_i2c_block_data because we * need to read more than 255 bytes */ static int s6sy761_read_events(struct s6sy761_data *sdata, u16 n_events) { … } static void s6sy761_report_coordinates(struct s6sy761_data *sdata, u8 *event, u8 tid) { … } static void s6sy761_report_release(struct s6sy761_data *sdata, u8 *event, u8 tid) { … } static void s6sy761_handle_coordinates(struct s6sy761_data *sdata, u8 *event) { … } static void s6sy761_handle_events(struct s6sy761_data *sdata, u8 n_events) { … } static irqreturn_t s6sy761_irq_handler(int irq, void *dev) { … } static int s6sy761_input_open(struct input_dev *dev) { … } static void s6sy761_input_close(struct input_dev *dev) { … } static ssize_t s6sy761_sysfs_devid(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(devid, 0444, s6sy761_sysfs_devid, NULL); static struct attribute *s6sy761_sysfs_attrs[] = …; ATTRIBUTE_GROUPS(…); static int s6sy761_power_on(struct s6sy761_data *sdata) { … } static int s6sy761_hw_init(struct s6sy761_data *sdata, unsigned int *max_x, unsigned int *max_y) { … } static void s6sy761_power_off(void *data) { … } static int s6sy761_probe(struct i2c_client *client) { … } static void s6sy761_remove(struct i2c_client *client) { … } static int s6sy761_runtime_suspend(struct device *dev) { … } static int s6sy761_runtime_resume(struct device *dev) { … } static int s6sy761_suspend(struct device *dev) { … } static int s6sy761_resume(struct device *dev) { … } static const struct dev_pm_ops s6sy761_pm_ops = …; #ifdef CONFIG_OF static const struct of_device_id s6sy761_of_match[] = …; MODULE_DEVICE_TABLE(of, s6sy761_of_match); #endif static const struct i2c_device_id s6sy761_id[] = …; MODULE_DEVICE_TABLE(i2c, s6sy761_id); static struct i2c_driver s6sy761_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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