// SPDX-License-Identifier: GPL-2.0+ /* * Azoteq IQS550/572/525 Trackpad/Touchscreen Controller * * Copyright (C) 2018 Jeff LaBundy <[email protected]> * * These devices require firmware exported from a PC-based configuration tool * made available by the vendor. Firmware files may be pushed to the device's * nonvolatile memory by writing the filename to the 'fw_file' sysfs control. * * Link to PC-based configuration tool and datasheet: https://www.azoteq.com/ */ #include <linux/bits.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/err.h> #include <linux/firmware.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/input.h> #include <linux/input/mt.h> #include <linux/input/touchscreen.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/unaligned.h> #define IQS5XX_FW_FILE_LEN … #define IQS5XX_NUM_RETRIES … #define IQS5XX_NUM_CONTACTS … #define IQS5XX_WR_BYTES_MAX … #define IQS5XX_PROD_NUM_IQS550 … #define IQS5XX_PROD_NUM_IQS572 … #define IQS5XX_PROD_NUM_IQS525 … #define IQS5XX_SHOW_RESET … #define IQS5XX_ACK_RESET … #define IQS5XX_SUSPEND … #define IQS5XX_RESUME … #define IQS5XX_SETUP_COMPLETE … #define IQS5XX_WDT … #define IQS5XX_ALP_REATI … #define IQS5XX_REATI … #define IQS5XX_TP_EVENT … #define IQS5XX_EVENT_MODE … #define IQS5XX_PROD_NUM … #define IQS5XX_SYS_INFO0 … #define IQS5XX_SYS_INFO1 … #define IQS5XX_SYS_CTRL0 … #define IQS5XX_SYS_CTRL1 … #define IQS5XX_SYS_CFG0 … #define IQS5XX_SYS_CFG1 … #define IQS5XX_X_RES … #define IQS5XX_Y_RES … #define IQS5XX_EXP_FILE … #define IQS5XX_CHKSM … #define IQS5XX_APP … #define IQS5XX_CSTM … #define IQS5XX_PMAP_END … #define IQS5XX_END_COMM … #define IQS5XX_CHKSM_LEN … #define IQS5XX_APP_LEN … #define IQS5XX_CSTM_LEN … #define IQS5XX_PMAP_LEN … #define IQS5XX_REC_HDR_LEN … #define IQS5XX_REC_LEN_MAX … #define IQS5XX_REC_TYPE_DATA … #define IQS5XX_REC_TYPE_EOF … #define IQS5XX_BL_ADDR_MASK … #define IQS5XX_BL_CMD_VER … #define IQS5XX_BL_CMD_READ … #define IQS5XX_BL_CMD_EXEC … #define IQS5XX_BL_CMD_CRC … #define IQS5XX_BL_BLK_LEN_MAX … #define IQS5XX_BL_ID … #define IQS5XX_BL_STATUS_NONE … #define IQS5XX_BL_CRC_PASS … #define IQS5XX_BL_CRC_FAIL … #define IQS5XX_BL_ATTEMPTS … struct iqs5xx_dev_id_info { … } __packed; struct iqs5xx_ihex_rec { … } __packed; struct iqs5xx_touch_data { … } __packed; struct iqs5xx_status { … } __packed; struct iqs5xx_private { … }; static int iqs5xx_read_burst(struct i2c_client *client, u16 reg, void *val, u16 len) { … } static int iqs5xx_read_word(struct i2c_client *client, u16 reg, u16 *val) { … } static int iqs5xx_write_burst(struct i2c_client *client, u16 reg, const void *val, u16 len) { … } static int iqs5xx_write_word(struct i2c_client *client, u16 reg, u16 val) { … } static int iqs5xx_write_byte(struct i2c_client *client, u16 reg, u8 val) { … } static void iqs5xx_reset(struct i2c_client *client) { … } static int iqs5xx_bl_cmd(struct i2c_client *client, u8 bl_cmd, u16 bl_addr) { … } static int iqs5xx_bl_open(struct i2c_client *client) { … } static int iqs5xx_bl_write(struct i2c_client *client, u16 bl_addr, u8 *pmap_data, u16 pmap_len) { … } static int iqs5xx_bl_verify(struct i2c_client *client, u16 bl_addr, u8 *pmap_data, u16 pmap_len) { … } static int iqs5xx_set_state(struct i2c_client *client, u8 state) { … } static int iqs5xx_open(struct input_dev *input) { … } static void iqs5xx_close(struct input_dev *input) { … } static int iqs5xx_axis_init(struct i2c_client *client) { … } static int iqs5xx_dev_init(struct i2c_client *client) { … } static irqreturn_t iqs5xx_irq(int irq, void *data) { … } static int iqs5xx_fw_file_parse(struct i2c_client *client, const char *fw_file, u8 *pmap) { … } static int iqs5xx_fw_file_write(struct i2c_client *client, const char *fw_file) { … } static ssize_t fw_file_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t fw_info_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_WO(fw_file); static DEVICE_ATTR_RO(fw_info); static struct attribute *iqs5xx_attrs[] = …; static umode_t iqs5xx_attr_is_visible(struct kobject *kobj, struct attribute *attr, int i) { … } static const struct attribute_group iqs5xx_group = …; __ATTRIBUTE_GROUPS(…); static int iqs5xx_suspend(struct device *dev) { … } static int iqs5xx_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(iqs5xx_pm, iqs5xx_suspend, iqs5xx_resume); static int iqs5xx_probe(struct i2c_client *client) { … } static const struct i2c_device_id iqs5xx_id[] = …; MODULE_DEVICE_TABLE(i2c, iqs5xx_id); static const struct of_device_id iqs5xx_of_match[] = …; MODULE_DEVICE_TABLE(of, iqs5xx_of_match); static struct i2c_driver iqs5xx_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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