// SPDX-License-Identifier: GPL-2.0-or-later /* * Azoteq IQS7222A/B/C/D Capacitive Touch Controller * * Copyright (C) 2022 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/touchscreen.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/ktime.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/property.h> #include <linux/slab.h> #include <linux/unaligned.h> #define IQS7222_PROD_NUM … #define IQS7222_PROD_NUM_A … #define IQS7222_PROD_NUM_B … #define IQS7222_PROD_NUM_C … #define IQS7222_PROD_NUM_D … #define IQS7222_SYS_STATUS … #define IQS7222_SYS_STATUS_RESET … #define IQS7222_SYS_STATUS_ATI_ERROR … #define IQS7222_SYS_STATUS_ATI_ACTIVE … #define IQS7222_CHAN_SETUP_0_REF_MODE_MASK … #define IQS7222_CHAN_SETUP_0_REF_MODE_FOLLOW … #define IQS7222_CHAN_SETUP_0_REF_MODE_REF … #define IQS7222_CHAN_SETUP_0_CHAN_EN … #define IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK … #define IQS7222_SLDR_SETUP_2_RES_MASK … #define IQS7222_SLDR_SETUP_2_RES_SHIFT … #define IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK … #define IQS7222_GPIO_SETUP_0_GPIO_EN … #define IQS7222_SYS_SETUP … #define IQS7222_SYS_SETUP_INTF_MODE_MASK … #define IQS7222_SYS_SETUP_INTF_MODE_TOUCH … #define IQS7222_SYS_SETUP_INTF_MODE_EVENT … #define IQS7222_SYS_SETUP_PWR_MODE_MASK … #define IQS7222_SYS_SETUP_PWR_MODE_AUTO … #define IQS7222_SYS_SETUP_REDO_ATI … #define IQS7222_SYS_SETUP_ACK_RESET … #define IQS7222_EVENT_MASK_ATI … #define IQS7222_EVENT_MASK_SLDR … #define IQS7222_EVENT_MASK_TPAD … #define IQS7222_EVENT_MASK_TOUCH … #define IQS7222_EVENT_MASK_PROX … #define IQS7222_COMMS_HOLD … #define IQS7222_COMMS_ERROR … #define IQS7222_COMMS_RETRY_MS … #define IQS7222_COMMS_TIMEOUT_MS … #define IQS7222_RESET_TIMEOUT_MS … #define IQS7222_ATI_TIMEOUT_MS … #define IQS7222_MAX_COLS_STAT … #define IQS7222_MAX_COLS_CYCLE … #define IQS7222_MAX_COLS_GLBL … #define IQS7222_MAX_COLS_BTN … #define IQS7222_MAX_COLS_CHAN … #define IQS7222_MAX_COLS_FILT … #define IQS7222_MAX_COLS_SLDR … #define IQS7222_MAX_COLS_TPAD … #define IQS7222_MAX_COLS_GPIO … #define IQS7222_MAX_COLS_SYS … #define IQS7222_MAX_CHAN … #define IQS7222_MAX_SLDR … #define IQS7222_NUM_RETRIES … #define IQS7222_REG_OFFSET … enum iqs7222_reg_key_id { … }; enum iqs7222_reg_grp_id { … }; static const char * const iqs7222_reg_grp_names[IQS7222_NUM_REG_GRPS] = …; static const unsigned int iqs7222_max_cols[IQS7222_NUM_REG_GRPS] = …; static const unsigned int iqs7222_gpio_links[] = …; struct iqs7222_event_desc { … }; static const struct iqs7222_event_desc iqs7222_kp_events[] = …; static const struct iqs7222_event_desc iqs7222_sl_events[] = …; static const struct iqs7222_event_desc iqs7222_tp_events[] = …; struct iqs7222_reg_grp_desc { … }; struct iqs7222_dev_desc { … }; static const struct iqs7222_dev_desc iqs7222_devs[] = …; struct iqs7222_prop_desc { … }; static const struct iqs7222_prop_desc iqs7222_props[] = …; struct iqs7222_private { … }; static u16 *iqs7222_setup(struct iqs7222_private *iqs7222, enum iqs7222_reg_grp_id reg_grp, int row) { … } static int iqs7222_irq_poll(struct iqs7222_private *iqs7222, u16 timeout_ms) { … } static int iqs7222_hard_reset(struct iqs7222_private *iqs7222) { … } static int iqs7222_force_comms(struct iqs7222_private *iqs7222) { … } static int iqs7222_read_burst(struct iqs7222_private *iqs7222, u16 reg, void *val, u16 num_val) { … } static int iqs7222_read_word(struct iqs7222_private *iqs7222, u16 reg, u16 *val) { … } static int iqs7222_write_burst(struct iqs7222_private *iqs7222, u16 reg, const void *val, u16 num_val) { … } static int iqs7222_write_word(struct iqs7222_private *iqs7222, u16 reg, u16 val) { … } static int iqs7222_ati_trigger(struct iqs7222_private *iqs7222) { … } static int iqs7222_dev_init(struct iqs7222_private *iqs7222, int dir) { … } static int iqs7222_dev_info(struct iqs7222_private *iqs7222) { … } static int iqs7222_gpio_select(struct iqs7222_private *iqs7222, struct fwnode_handle *child_node, int child_enable, u16 child_link) { … } static int iqs7222_parse_props(struct iqs7222_private *iqs7222, struct fwnode_handle *reg_grp_node, int reg_grp_index, enum iqs7222_reg_grp_id reg_grp, enum iqs7222_reg_key_id reg_key) { … } static int iqs7222_parse_event(struct iqs7222_private *iqs7222, struct fwnode_handle *event_node, int reg_grp_index, enum iqs7222_reg_grp_id reg_grp, enum iqs7222_reg_key_id reg_key, u16 event_enable, u16 event_link, unsigned int *event_type, unsigned int *event_code) { … } static int iqs7222_parse_cycle(struct iqs7222_private *iqs7222, struct fwnode_handle *cycle_node, int cycle_index) { … } static int iqs7222_parse_chan(struct iqs7222_private *iqs7222, struct fwnode_handle *chan_node, int chan_index) { … } static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, struct fwnode_handle *sldr_node, int sldr_index) { … } static int iqs7222_parse_tpad(struct iqs7222_private *iqs7222, struct fwnode_handle *tpad_node, int tpad_index) { … } static int (*iqs7222_parse_extra[IQS7222_NUM_REG_GRPS]) (struct iqs7222_private *iqs7222, struct fwnode_handle *reg_grp_node, int reg_grp_index) = …; static int iqs7222_parse_reg_grp(struct iqs7222_private *iqs7222, enum iqs7222_reg_grp_id reg_grp, int reg_grp_index) { … } static int iqs7222_parse_all(struct iqs7222_private *iqs7222) { … } static int iqs7222_report(struct iqs7222_private *iqs7222) { … } static irqreturn_t iqs7222_irq(int irq, void *context) { … } static int iqs7222_probe(struct i2c_client *client) { … } static const struct of_device_id iqs7222_of_match[] = …; MODULE_DEVICE_TABLE(of, iqs7222_of_match); static struct i2c_driver iqs7222_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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