/* * Cypress APA trackpad with I2C interface * * Author: Dudley Du <[email protected]> * * Copyright (C) 2014-2015 Cypress Semiconductor, Inc. * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. */ #include <linux/delay.h> #include <linux/i2c.h> #include <linux/input.h> #include <linux/input/mt.h> #include <linux/mutex.h> #include <linux/completion.h> #include <linux/slab.h> #include <linux/unaligned.h> #include <linux/crc-itu-t.h> #include <linux/pm_runtime.h> #include "cyapa.h" /* Macro of TSG firmware image */ #define CYAPA_TSG_FLASH_MAP_BLOCK_SIZE … #define CYAPA_TSG_IMG_FW_HDR_SIZE … #define CYAPA_TSG_FW_ROW_SIZE … #define CYAPA_TSG_IMG_START_ROW_NUM … #define CYAPA_TSG_IMG_END_ROW_NUM … #define CYAPA_TSG_IMG_APP_INTEGRITY_ROW_NUM … #define CYAPA_TSG_IMG_MAX_RECORDS … #define CYAPA_TSG_IMG_READ_SIZE … #define CYAPA_TSG_START_OF_APPLICATION … #define CYAPA_TSG_APP_INTEGRITY_SIZE … #define CYAPA_TSG_FLASH_MAP_METADATA_SIZE … #define CYAPA_TSG_BL_KEY_SIZE … #define CYAPA_TSG_MAX_CMD_SIZE … /* Macro of PIP interface */ #define PIP_BL_INITIATE_RESP_LEN … #define PIP_BL_FAIL_EXIT_RESP_LEN … #define PIP_BL_FAIL_EXIT_STATUS_CODE … #define PIP_BL_VERIFY_INTEGRITY_RESP_LEN … #define PIP_BL_INTEGRITY_CHEKC_PASS … #define PIP_BL_BLOCK_WRITE_RESP_LEN … #define PIP_TOUCH_REPORT_ID … #define PIP_BTN_REPORT_ID … #define PIP_WAKEUP_EVENT_REPORT_ID … #define PIP_PUSH_BTN_REPORT_ID … #define GEN5_OLD_PUSH_BTN_REPORT_ID … #define PIP_PROXIMITY_REPORT_ID … #define PIP_PROXIMITY_REPORT_SIZE … #define PIP_PROXIMITY_DISTANCE_OFFSET … #define PIP_PROXIMITY_DISTANCE_MASK … #define PIP_TOUCH_REPORT_HEAD_SIZE … #define PIP_TOUCH_REPORT_MAX_SIZE … #define PIP_BTN_REPORT_HEAD_SIZE … #define PIP_BTN_REPORT_MAX_SIZE … #define PIP_WAKEUP_EVENT_SIZE … #define PIP_NUMBER_OF_TOUCH_OFFSET … #define PIP_NUMBER_OF_TOUCH_MASK … #define PIP_BUTTONS_OFFSET … #define PIP_BUTTONS_MASK … #define PIP_GET_EVENT_ID(reg) … #define PIP_GET_TOUCH_ID(reg) … #define PIP_TOUCH_TYPE_FINGER … #define PIP_TOUCH_TYPE_PROXIMITY … #define PIP_TOUCH_TYPE_HOVER … #define PIP_GET_TOUCH_TYPE(reg) … #define RECORD_EVENT_NONE … #define RECORD_EVENT_TOUCHDOWN … #define RECORD_EVENT_DISPLACE … #define RECORD_EVENT_LIFTOFF … #define PIP_SENSING_MODE_MUTUAL_CAP_FINE … #define PIP_SENSING_MODE_SELF_CAP … #define PIP_SET_PROXIMITY … /* Macro of Gen5 */ #define GEN5_BL_MAX_OUTPUT_LENGTH … #define GEN5_APP_MAX_OUTPUT_LENGTH … #define GEN5_POWER_STATE_ACTIVE … #define GEN5_POWER_STATE_LOOK_FOR_TOUCH … #define GEN5_POWER_STATE_READY … #define GEN5_POWER_STATE_IDLE … #define GEN5_POWER_STATE_BTN_ONLY … #define GEN5_POWER_STATE_OFF … #define GEN5_POWER_READY_MAX_INTRVL_TIME … #define GEN5_POWER_IDLE_MAX_INTRVL_TIME … #define GEN5_CMD_GET_PARAMETER … #define GEN5_CMD_SET_PARAMETER … #define GEN5_PARAMETER_ACT_INTERVL_ID … #define GEN5_PARAMETER_ACT_INTERVL_SIZE … #define GEN5_PARAMETER_ACT_LFT_INTERVL_ID … #define GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE … #define GEN5_PARAMETER_LP_INTRVL_ID … #define GEN5_PARAMETER_LP_INTRVL_SIZE … #define GEN5_PARAMETER_DISABLE_PIP_REPORT … #define GEN5_BL_REPORT_DESCRIPTOR_SIZE … #define GEN5_BL_REPORT_DESCRIPTOR_ID … #define GEN5_APP_REPORT_DESCRIPTOR_SIZE … #define GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE … #define GEN5_APP_REPORT_DESCRIPTOR_ID … #define GEN5_RETRIEVE_MUTUAL_PWC_DATA … #define GEN5_RETRIEVE_SELF_CAP_PWC_DATA … #define GEN5_RETRIEVE_DATA_ELEMENT_SIZE_MASK … #define GEN5_CMD_EXECUTE_PANEL_SCAN … #define GEN5_CMD_RETRIEVE_PANEL_SCAN … #define GEN5_PANEL_SCAN_MUTUAL_RAW_DATA … #define GEN5_PANEL_SCAN_MUTUAL_BASELINE … #define GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT … #define GEN5_PANEL_SCAN_SELF_RAW_DATA … #define GEN5_PANEL_SCAN_SELF_BASELINE … #define GEN5_PANEL_SCAN_SELF_DIFFCOUNT … /* The offset only valid for retrieve PWC and panel scan commands */ #define GEN5_RESP_DATA_STRUCTURE_OFFSET … #define GEN5_PWC_DATA_ELEMENT_SIZE_MASK … struct cyapa_pip_touch_record { … } __packed; struct cyapa_pip_report_data { … } __packed; struct cyapa_tsg_bin_image_head { … } __packed; struct cyapa_tsg_bin_image_data_record { … } __packed; struct cyapa_tsg_bin_image { … } __packed; struct pip_bl_packet_start { … } __packed; struct pip_bl_packet_end { … } __packed; struct pip_bl_cmd_head { … } __packed; /* Initiate bootload command data structure. */ struct pip_bl_initiate_cmd_data { … } __packed; struct tsg_bl_metadata_row_params { … } __packed; /* Bootload program and verify row command data structure */ struct tsg_bl_flash_row_head { … } __packed; struct pip_app_cmd_head { … } __packed; /* Application get/set parameter command data structure */ struct gen5_app_set_parameter_data { … } __packed; struct gen5_app_get_parameter_data { … } __packed; struct gen5_retrieve_panel_scan_data { … } __packed; u8 pip_read_sys_info[] = …; u8 pip_bl_read_app_info[] = …; static u8 cyapa_pip_bl_cmd_key[] = …; static int cyapa_pip_event_process(struct cyapa *cyapa, struct cyapa_pip_report_data *report_data); int cyapa_pip_cmd_state_initialize(struct cyapa *cyapa) { … } /* Return negative errno, or else the number of bytes read. */ ssize_t cyapa_i2c_pip_read(struct cyapa *cyapa, u8 *buf, size_t size) { … } /* * Return a negative errno code else zero on success. */ ssize_t cyapa_i2c_pip_write(struct cyapa *cyapa, u8 *buf, size_t size) { … } static void cyapa_set_pip_pm_state(struct cyapa *cyapa, enum cyapa_pm_stage pm_stage) { … } static void cyapa_reset_pip_pm_state(struct cyapa *cyapa) { … } static enum cyapa_pm_stage cyapa_get_pip_pm_state(struct cyapa *cyapa) { … } /* * This function is aimed to dump all not read data in Gen5 trackpad * before send any command, otherwise, the interrupt line will be blocked. */ int cyapa_empty_pip_output_data(struct cyapa *cyapa, u8 *buf, int *len, cb_sort func) { … } static int cyapa_do_i2c_pip_cmd_irq_sync( struct cyapa *cyapa, u8 *cmd, size_t cmd_len, unsigned long timeout) { … } static int cyapa_do_i2c_pip_cmd_polling( struct cyapa *cyapa, u8 *cmd, size_t cmd_len, u8 *resp_data, int *resp_len, unsigned long timeout, cb_sort func) { … } int cyapa_i2c_pip_cmd_irq_sync( struct cyapa *cyapa, u8 *cmd, int cmd_len, u8 *resp_data, int *resp_len, unsigned long timeout, cb_sort func, bool irq_mode) { … } bool cyapa_sort_tsg_pip_bl_resp_data(struct cyapa *cyapa, u8 *data, int len) { … } bool cyapa_sort_tsg_pip_app_resp_data(struct cyapa *cyapa, u8 *data, int len) { … } static bool cyapa_sort_pip_application_launch_data(struct cyapa *cyapa, u8 *buf, int len) { … } static bool cyapa_sort_gen5_hid_descriptor_data(struct cyapa *cyapa, u8 *buf, int len) { … } static bool cyapa_sort_pip_deep_sleep_data(struct cyapa *cyapa, u8 *buf, int len) { … } static int gen5_idle_state_parse(struct cyapa *cyapa) { … } static int gen5_hid_description_header_parse(struct cyapa *cyapa, u8 *reg_data) { … } static int gen5_report_data_header_parse(struct cyapa *cyapa, u8 *reg_data) { … } static int gen5_cmd_resp_header_parse(struct cyapa *cyapa, u8 *reg_data) { … } static int cyapa_gen5_state_parse(struct cyapa *cyapa, u8 *reg_data, int len) { … } static struct cyapa_tsg_bin_image_data_record * cyapa_get_image_record_data_num(const struct firmware *fw, int *record_num) { … } int cyapa_pip_bl_initiate(struct cyapa *cyapa, const struct firmware *fw) { … } static bool cyapa_sort_pip_bl_exit_data(struct cyapa *cyapa, u8 *buf, int len) { … } int cyapa_pip_bl_exit(struct cyapa *cyapa) { … } int cyapa_pip_bl_enter(struct cyapa *cyapa) { … } static int cyapa_pip_fw_head_check(struct cyapa *cyapa, struct cyapa_tsg_bin_image_head *image_head) { … } int cyapa_pip_check_fw(struct cyapa *cyapa, const struct firmware *fw) { … } static int cyapa_pip_write_fw_block(struct cyapa *cyapa, struct cyapa_tsg_bin_image_data_record *flash_record) { … } int cyapa_pip_do_fw_update(struct cyapa *cyapa, const struct firmware *fw) { … } static int cyapa_gen5_change_power_state(struct cyapa *cyapa, u8 power_state) { … } static int cyapa_gen5_set_interval_time(struct cyapa *cyapa, u8 parameter_id, u16 interval_time) { … } static int cyapa_gen5_get_interval_time(struct cyapa *cyapa, u8 parameter_id, u16 *interval_time) { … } static int cyapa_gen5_disable_pip_report(struct cyapa *cyapa) { … } int cyapa_pip_set_proximity(struct cyapa *cyapa, bool enable) { … } int cyapa_pip_deep_sleep(struct cyapa *cyapa, u8 state) { … } static int cyapa_gen5_set_power_mode(struct cyapa *cyapa, u8 power_mode, u16 sleep_time, enum cyapa_pm_stage pm_stage) { … } int cyapa_pip_resume_scanning(struct cyapa *cyapa) { … } int cyapa_pip_suspend_scanning(struct cyapa *cyapa) { … } static int cyapa_pip_calibrate_pwcs(struct cyapa *cyapa, u8 calibrate_sensing_mode_type) { … } ssize_t cyapa_pip_do_calibrate(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static s32 twos_complement_to_s32(s32 value, int num_bits) { … } static s32 cyapa_parse_structure_data(u8 data_format, u8 *buf, int buf_len) { … } static void cyapa_gen5_guess_electrodes(struct cyapa *cyapa, int *electrodes_rx, int *electrodes_tx) { … } /* * Read all the global mutual or self idac data or mutual or self local PWC * data based on the @idac_data_type. * If the input value of @data_size is 0, then means read global mutual or * self idac data. For read global mutual idac data, @idac_max, @idac_min and * @idac_ave are in order used to return the max value of global mutual idac * data, the min value of global mutual idac and the average value of the * global mutual idac data. For read global self idac data, @idac_max is used * to return the global self cap idac data in Rx direction, @idac_min is used * to return the global self cap idac data in Tx direction. @idac_ave is not * used. * If the input value of @data_size is not 0, than means read the mutual or * self local PWC data. The @idac_max, @idac_min and @idac_ave are used to * return the max, min and average value of the mutual or self local PWC data. * Note, in order to read mutual local PWC data, must read invoke this function * to read the mutual global idac data firstly to set the correct Rx number * value, otherwise, the read mutual idac and PWC data may not correct. */ static int cyapa_gen5_read_idac_data(struct cyapa *cyapa, u8 cmd_code, u8 idac_data_type, int *data_size, int *idac_max, int *idac_min, int *idac_ave) { … } static int cyapa_gen5_read_mutual_idac_data(struct cyapa *cyapa, int *gidac_mutual_max, int *gidac_mutual_min, int *gidac_mutual_ave, int *lidac_mutual_max, int *lidac_mutual_min, int *lidac_mutual_ave) { … } static int cyapa_gen5_read_self_idac_data(struct cyapa *cyapa, int *gidac_self_rx, int *gidac_self_tx, int *lidac_self_max, int *lidac_self_min, int *lidac_self_ave) { … } static ssize_t cyapa_gen5_execute_panel_scan(struct cyapa *cyapa) { … } static int cyapa_gen5_read_panel_scan_raw_data(struct cyapa *cyapa, u8 cmd_code, u8 raw_data_type, int raw_data_max_num, int *raw_data_max, int *raw_data_min, int *raw_data_ave, u8 *buffer) { … } static ssize_t cyapa_gen5_show_baseline(struct device *dev, struct device_attribute *attr, char *buf) { … } bool cyapa_pip_sort_system_info_data(struct cyapa *cyapa, u8 *buf, int len) { … } static int cyapa_gen5_bl_query_data(struct cyapa *cyapa) { … } static int cyapa_gen5_get_query_data(struct cyapa *cyapa) { … } static int cyapa_gen5_do_operational_check(struct cyapa *cyapa) { … } /* * Return false, do not continue process * Return true, continue process. */ bool cyapa_pip_irq_cmd_handler(struct cyapa *cyapa) { … } static void cyapa_pip_report_buttons(struct cyapa *cyapa, const struct cyapa_pip_report_data *report_data) { … } static void cyapa_pip_report_proximity(struct cyapa *cyapa, const struct cyapa_pip_report_data *report_data) { … } static void cyapa_pip_report_slot_data(struct cyapa *cyapa, const struct cyapa_pip_touch_record *touch) { … } static void cyapa_pip_report_touches(struct cyapa *cyapa, const struct cyapa_pip_report_data *report_data) { … } int cyapa_pip_irq_handler(struct cyapa *cyapa) { … } static int cyapa_pip_event_process(struct cyapa *cyapa, struct cyapa_pip_report_data *report_data) { … } int cyapa_pip_bl_activate(struct cyapa *cyapa) { … } int cyapa_pip_bl_deactivate(struct cyapa *cyapa) { … } const struct cyapa_dev_ops cyapa_gen5_ops = …;
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