// SPDX-License-Identifier: GPL-2.0-or-later /* * Azoteq IQS7210A/7211A/E Trackpad/Touchscreen Controller * * Copyright (C) 2023 Jeff LaBundy <[email protected]> */ #include <linux/bits.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/err.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/iopoll.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/property.h> #include <linux/slab.h> #include <linux/unaligned.h> #define IQS7211_PROD_NUM … #define IQS7211_EVENT_MASK_ALL … #define IQS7211_EVENT_MASK_ALP … #define IQS7211_EVENT_MASK_BTN … #define IQS7211_EVENT_MASK_ATI … #define IQS7211_EVENT_MASK_MOVE … #define IQS7211_EVENT_MASK_GSTR … #define IQS7211_EVENT_MODE … #define IQS7211_COMMS_ERROR … #define IQS7211_COMMS_RETRY_MS … #define IQS7211_COMMS_SLEEP_US … #define IQS7211_COMMS_TIMEOUT_US … #define IQS7211_RESET_TIMEOUT_MS … #define IQS7211_START_TIMEOUT_US … #define IQS7211_NUM_RETRIES … #define IQS7211_NUM_CRX … #define IQS7211_MAX_CTX … #define IQS7211_MAX_CONTACTS … #define IQS7211_MAX_CYCLES … /* * The following delay is used during instances that must wait for the open- * drain RDY pin to settle. Its value is calculated as 5*R*C, where R and C * represent typical datasheet values of 4.7k and 100 nF, respectively. */ #define iqs7211_irq_wait() … enum iqs7211_dev_id { … }; enum iqs7211_comms_mode { … }; struct iqs7211_reg_field_desc { … }; enum iqs7211_reg_key_id { … }; enum iqs7211_reg_grp_id { … }; static const char * const iqs7211_reg_grp_names[IQS7211_NUM_REG_GRPS] = …; static const u16 iqs7211_reg_grp_masks[IQS7211_NUM_REG_GRPS] = …; struct iqs7211_event_desc { … }; static const struct iqs7211_event_desc iqs7210a_kp_events[] = …; static const struct iqs7211_event_desc iqs7211a_kp_events[] = …; static const struct iqs7211_event_desc iqs7211e_kp_events[] = …; struct iqs7211_dev_desc { … }; static const struct iqs7211_dev_desc iqs7211_devs[] = …; struct iqs7211_prop_desc { … }; static const struct iqs7211_prop_desc iqs7211_props[] = …; static const u8 iqs7211_gesture_angle[] = …; struct iqs7211_ver_info { … } __packed; struct iqs7211_touch_data { … } __packed; struct iqs7211_tp_config { … } __packed; struct iqs7211_private { … }; static int iqs7211_irq_poll(struct iqs7211_private *iqs7211, u64 timeout_us) { … } static int iqs7211_hard_reset(struct iqs7211_private *iqs7211) { … } static int iqs7211_force_comms(struct iqs7211_private *iqs7211) { … } static int iqs7211_read_burst(struct iqs7211_private *iqs7211, u8 reg, void *val, u16 val_len) { … } static int iqs7211_read_word(struct iqs7211_private *iqs7211, u8 reg, u16 *val) { … } static int iqs7211_write_burst(struct iqs7211_private *iqs7211, u8 reg, const void *val, u16 val_len) { … } static int iqs7211_write_word(struct iqs7211_private *iqs7211, u8 reg, u16 val) { … } static int iqs7211_start_comms(struct iqs7211_private *iqs7211) { … } static int iqs7211_init_device(struct iqs7211_private *iqs7211) { … } static int iqs7211_add_field(struct iqs7211_private *iqs7211, struct iqs7211_reg_field_desc new_field) { … } static int iqs7211_parse_props(struct iqs7211_private *iqs7211, struct fwnode_handle *reg_grp_node, enum iqs7211_reg_grp_id reg_grp, enum iqs7211_reg_key_id reg_key) { … } static int iqs7211_parse_event(struct iqs7211_private *iqs7211, struct fwnode_handle *event_node, enum iqs7211_reg_grp_id reg_grp, enum iqs7211_reg_key_id reg_key, unsigned int *event_code) { … } static int iqs7211_parse_cycles(struct iqs7211_private *iqs7211, struct fwnode_handle *tp_node) { … } static int iqs7211_parse_tp(struct iqs7211_private *iqs7211, struct fwnode_handle *tp_node) { … } static int iqs7211_parse_alp(struct iqs7211_private *iqs7211, struct fwnode_handle *alp_node) { … } static int (*iqs7211_parse_extra[IQS7211_NUM_REG_GRPS]) (struct iqs7211_private *iqs7211, struct fwnode_handle *reg_grp_node) = …; static int iqs7211_parse_reg_grp(struct iqs7211_private *iqs7211, struct fwnode_handle *reg_grp_node, enum iqs7211_reg_grp_id reg_grp) { … } static int iqs7211_register_kp(struct iqs7211_private *iqs7211) { … } static int iqs7211_register_tp(struct iqs7211_private *iqs7211) { … } static int iqs7211_report(struct iqs7211_private *iqs7211) { … } static irqreturn_t iqs7211_irq(int irq, void *context) { … } static int iqs7211_suspend(struct device *dev) { … } static int iqs7211_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(iqs7211_pm, iqs7211_suspend, iqs7211_resume); static ssize_t fw_info_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(fw_info); static struct attribute *iqs7211_attrs[] = …; ATTRIBUTE_GROUPS(…); static const struct of_device_id iqs7211_of_match[] = …; MODULE_DEVICE_TABLE(of, iqs7211_of_match); static int iqs7211_probe(struct i2c_client *client) { … } static struct i2c_driver iqs7211_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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