// SPDX-License-Identifier: GPL-2.0+ /* * Azoteq IQS626A Capacitive Touch Controller * * Copyright (C) 2020 Jeff LaBundy <[email protected]> * * This driver registers up to 2 input devices: one representing capacitive or * inductive keys as well as Hall-effect switches, and one for a trackpad that * can express various gestures. */ #include <linux/bits.h> #include <linux/completion.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/err.h> #include <linux/i2c.h> #include <linux/input.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/property.h> #include <linux/regmap.h> #include <linux/slab.h> #define IQS626_VER_INFO … #define IQS626_VER_INFO_PROD_NUM … #define IQS626_SYS_FLAGS … #define IQS626_SYS_FLAGS_SHOW_RESET … #define IQS626_SYS_FLAGS_IN_ATI … #define IQS626_SYS_FLAGS_PWR_MODE_MASK … #define IQS626_SYS_FLAGS_PWR_MODE_SHIFT … #define IQS626_HALL_OUTPUT … #define IQS626_SYS_SETTINGS … #define IQS626_SYS_SETTINGS_CLK_DIV … #define IQS626_SYS_SETTINGS_ULP_AUTO … #define IQS626_SYS_SETTINGS_DIS_AUTO … #define IQS626_SYS_SETTINGS_PWR_MODE_MASK … #define IQS626_SYS_SETTINGS_PWR_MODE_SHIFT … #define IQS626_SYS_SETTINGS_PWR_MODE_MAX … #define IQS626_SYS_SETTINGS_ULP_UPDATE_MASK … #define IQS626_SYS_SETTINGS_ULP_UPDATE_SHIFT … #define IQS626_SYS_SETTINGS_ULP_UPDATE_MAX … #define IQS626_SYS_SETTINGS_EVENT_MODE … #define IQS626_SYS_SETTINGS_EVENT_MODE_LP … #define IQS626_SYS_SETTINGS_REDO_ATI … #define IQS626_SYS_SETTINGS_ACK_RESET … #define IQS626_MISC_A_ATI_BAND_DISABLE … #define IQS626_MISC_A_TPx_LTA_UPDATE_MASK … #define IQS626_MISC_A_TPx_LTA_UPDATE_SHIFT … #define IQS626_MISC_A_TPx_LTA_UPDATE_MAX … #define IQS626_MISC_A_ATI_LP_ONLY … #define IQS626_MISC_A_GPIO3_SELECT_MASK … #define IQS626_MISC_A_GPIO3_SELECT_MAX … #define IQS626_EVENT_MASK_SYS … #define IQS626_EVENT_MASK_GESTURE … #define IQS626_EVENT_MASK_DEEP … #define IQS626_EVENT_MASK_TOUCH … #define IQS626_EVENT_MASK_PROX … #define IQS626_RATE_NP_MS_MAX … #define IQS626_RATE_LP_MS_MAX … #define IQS626_RATE_ULP_MS_MAX … #define IQS626_TIMEOUT_PWR_MS_MAX … #define IQS626_TIMEOUT_LTA_MS_MAX … #define IQS626_MISC_B_RESEED_UI_SEL_MASK … #define IQS626_MISC_B_RESEED_UI_SEL_SHIFT … #define IQS626_MISC_B_RESEED_UI_SEL_MAX … #define IQS626_MISC_B_THRESH_EXTEND … #define IQS626_MISC_B_TRACKING_UI_ENABLE … #define IQS626_MISC_B_TPx_SWIPE … #define IQS626_MISC_B_RESEED_OFFSET … #define IQS626_MISC_B_FILT_STR_TPx … #define IQS626_THRESH_SWIPE_MAX … #define IQS626_TIMEOUT_TAP_MS_MAX … #define IQS626_TIMEOUT_SWIPE_MS_MAX … #define IQS626_CHx_ENG_0_MEAS_CAP_SIZE … #define IQS626_CHx_ENG_0_RX_TERM_VSS … #define IQS626_CHx_ENG_0_LINEARIZE … #define IQS626_CHx_ENG_0_DUAL_DIR … #define IQS626_CHx_ENG_0_FILT_DISABLE … #define IQS626_CHx_ENG_0_ATI_MODE_MASK … #define IQS626_CHx_ENG_0_ATI_MODE_MAX … #define IQS626_CHx_ENG_1_CCT_HIGH_1 … #define IQS626_CHx_ENG_1_CCT_HIGH_0 … #define IQS626_CHx_ENG_1_PROJ_BIAS_MASK … #define IQS626_CHx_ENG_1_PROJ_BIAS_SHIFT … #define IQS626_CHx_ENG_1_PROJ_BIAS_MAX … #define IQS626_CHx_ENG_1_CCT_ENABLE … #define IQS626_CHx_ENG_1_SENSE_FREQ_MASK … #define IQS626_CHx_ENG_1_SENSE_FREQ_SHIFT … #define IQS626_CHx_ENG_1_SENSE_FREQ_MAX … #define IQS626_CHx_ENG_1_ATI_BAND_TIGHTEN … #define IQS626_CHx_ENG_2_LOCAL_CAP_MASK … #define IQS626_CHx_ENG_2_LOCAL_CAP_SHIFT … #define IQS626_CHx_ENG_2_LOCAL_CAP_MAX … #define IQS626_CHx_ENG_2_LOCAL_CAP_ENABLE … #define IQS626_CHx_ENG_2_SENSE_MODE_MASK … #define IQS626_CHx_ENG_2_SENSE_MODE_MAX … #define IQS626_CHx_ENG_3_TX_FREQ_MASK … #define IQS626_CHx_ENG_3_TX_FREQ_SHIFT … #define IQS626_CHx_ENG_3_TX_FREQ_MAX … #define IQS626_CHx_ENG_3_INV_LOGIC … #define IQS626_CHx_ENG_4_RX_TERM_VREG … #define IQS626_CHx_ENG_4_CCT_LOW_1 … #define IQS626_CHx_ENG_4_CCT_LOW_0 … #define IQS626_CHx_ENG_4_COMP_DISABLE … #define IQS626_CHx_ENG_4_STATIC_ENABLE … #define IQS626_TPx_ATI_BASE_MIN … #define IQS626_TPx_ATI_BASE_MAX … #define IQS626_CHx_ATI_BASE_MASK … #define IQS626_CHx_ATI_BASE_75 … #define IQS626_CHx_ATI_BASE_100 … #define IQS626_CHx_ATI_BASE_150 … #define IQS626_CHx_ATI_BASE_200 … #define IQS626_CHx_ATI_TARGET_MASK … #define IQS626_CHx_ATI_TARGET_MAX … #define IQS626_CHx_THRESH_MAX … #define IQS626_CHx_HYST_DEEP_MASK … #define IQS626_CHx_HYST_DEEP_SHIFT … #define IQS626_CHx_HYST_TOUCH_MASK … #define IQS626_CHx_HYST_MAX … #define IQS626_FILT_STR_NP_TPx_MASK … #define IQS626_FILT_STR_NP_TPx_SHIFT … #define IQS626_FILT_STR_LP_TPx_MASK … #define IQS626_FILT_STR_LP_TPx_SHIFT … #define IQS626_FILT_STR_NP_CNT_MASK … #define IQS626_FILT_STR_NP_CNT_SHIFT … #define IQS626_FILT_STR_LP_CNT_MASK … #define IQS626_FILT_STR_LP_CNT_SHIFT … #define IQS626_FILT_STR_NP_LTA_MASK … #define IQS626_FILT_STR_NP_LTA_SHIFT … #define IQS626_FILT_STR_LP_LTA_MASK … #define IQS626_FILT_STR_MAX … #define IQS626_ULP_PROJ_ENABLE … #define IQS626_GEN_WEIGHT_MAX … #define IQS626_MAX_REG … #define IQS626_NUM_CH_TP_3 … #define IQS626_NUM_CH_TP_2 … #define IQS626_NUM_CH_GEN … #define IQS626_NUM_CRx_TX … #define IQS626_PWR_MODE_POLL_SLEEP_US … #define IQS626_PWR_MODE_POLL_TIMEOUT_US … #define iqs626_irq_wait() … enum iqs626_ch_id { … }; enum iqs626_rx_inactive { … }; enum iqs626_st_offs { … }; enum iqs626_th_offs { … }; enum iqs626_event_id { … }; enum iqs626_gesture_id { … }; struct iqs626_event_desc { … }; static const struct iqs626_event_desc iqs626_events[] = …; struct iqs626_ver_info { … } __packed; struct iqs626_flags { … } __packed; struct iqs626_ch_reg_ulp { … } __packed; struct iqs626_ch_reg_tp { … } __packed; struct iqs626_tp_grp_reg { … } __packed; struct iqs626_ch_reg_gen { … } __packed; struct iqs626_ch_reg_hall { … } __packed; struct iqs626_sys_reg { … } __packed; struct iqs626_channel_desc { … }; static const struct iqs626_channel_desc iqs626_channels[] = …; struct iqs626_private { … }; static noinline_for_stack int iqs626_parse_events(struct iqs626_private *iqs626, struct fwnode_handle *ch_node, enum iqs626_ch_id ch_id) { … } static noinline_for_stack int iqs626_parse_ati_target(struct iqs626_private *iqs626, struct fwnode_handle *ch_node, enum iqs626_ch_id ch_id) { … } static int iqs626_parse_pins(struct iqs626_private *iqs626, struct fwnode_handle *ch_node, const char *propname, u8 *enable) { … } static int iqs626_parse_trackpad(struct iqs626_private *iqs626, struct fwnode_handle *ch_node, enum iqs626_ch_id ch_id) { … } static noinline_for_stack int iqs626_parse_channel(struct iqs626_private *iqs626, struct fwnode_handle *ch_node, enum iqs626_ch_id ch_id) { … } static int iqs626_parse_prop(struct iqs626_private *iqs626) { … } static int iqs626_input_init(struct iqs626_private *iqs626) { … } static int iqs626_report(struct iqs626_private *iqs626) { … } static irqreturn_t iqs626_irq(int irq, void *context) { … } static const struct regmap_config iqs626_regmap_config = …; static int iqs626_probe(struct i2c_client *client) { … } static int iqs626_suspend(struct device *dev) { … } static int iqs626_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(iqs626_pm, iqs626_suspend, iqs626_resume); static const struct of_device_id iqs626_of_match[] = …; MODULE_DEVICE_TABLE(of, iqs626_of_match); static struct i2c_driver iqs626_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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