// SPDX-License-Identifier: GPL-2.0-only /* * cyttsp4_core.c * Cypress TrueTouch(TM) Standard Product V4 Core driver module. * For use with Cypress Txx4xx parts. * Supported parts include: * TMA4XX * TMA1036 * * Copyright (C) 2012 Cypress Semiconductor * * Contact Cypress Semiconductor at www.cypress.com <[email protected]> */ #include "cyttsp4_core.h" #include <linux/delay.h> #include <linux/gpio.h> #include <linux/input/mt.h> #include <linux/interrupt.h> #include <linux/pm_runtime.h> #include <linux/sched.h> #include <linux/slab.h> /* Timeout in ms. */ #define CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT … #define CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT … #define CY_CORE_MODE_CHANGE_TIMEOUT … #define CY_CORE_RESET_AND_WAIT_TIMEOUT … #define CY_CORE_WAKEUP_TIMEOUT … #define CY_CORE_STARTUP_RETRY_COUNT … static const char * const cyttsp4_tch_abs_string[] = …; static const u8 ldr_exit[] = …; static const u8 ldr_err_app[] = …; static inline size_t merge_bytes(u8 high, u8 low) { … } #ifdef VERBOSE_DEBUG static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size, const char *data_name) { int i, k; const char fmt[] = "%02X "; int max; if (!size) return; max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED); pr_buf[0] = 0; for (i = k = 0; i < size && k < max; i++, k += 3) scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]); dev_vdbg(dev, "%s: %s[0..%d]=%s%s\n", __func__, data_name, size - 1, pr_buf, size <= max ? "" : CY_PR_TRUNCATED); } #else #define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) … #endif static int cyttsp4_load_status_regs(struct cyttsp4 *cd) { … } static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode) { … } static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd) { … } static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd) { … } static int cyttsp4_hw_reset(struct cyttsp4 *cd) { … } /* * Gets number of bits for a touch filed as parameter, * sets maximum value for field which is used as bit mask * and returns number of bytes required for that field */ static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max) { … } static int cyttsp4_si_data_offsets(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_cydata(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_test_data(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_ddata(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_mdata(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_btn_data(struct cyttsp4 *cd) { … } static int cyttsp4_si_get_op_data_ptrs(struct cyttsp4 *cd) { … } static void cyttsp4_si_put_log_data(struct cyttsp4 *cd) { … } static int cyttsp4_get_sysinfo_regs(struct cyttsp4 *cd) { … } static void cyttsp4_queue_startup_(struct cyttsp4 *cd) { … } static void cyttsp4_report_slot_liftoff(struct cyttsp4_mt_data *md, int max_slots) { … } static void cyttsp4_lift_all(struct cyttsp4_mt_data *md) { … } static void cyttsp4_get_touch_axis(struct cyttsp4_mt_data *md, int *axis, int size, int max, u8 *xy_data, int bofs) { … } static void cyttsp4_get_touch(struct cyttsp4_mt_data *md, struct cyttsp4_touch *touch, u8 *xy_data) { … } static void cyttsp4_final_sync(struct input_dev *input, int max_slots, int *ids) { … } static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch) { … } /* read xy_data for all current touches */ static int cyttsp4_xy_worker(struct cyttsp4 *cd) { … } static int cyttsp4_mt_attention(struct cyttsp4 *cd) { … } static irqreturn_t cyttsp4_irq(int irq, void *handle) { … } static void cyttsp4_start_wd_timer(struct cyttsp4 *cd) { … } static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd) { … } static void cyttsp4_watchdog_timer(struct timer_list *t) { … } static int cyttsp4_request_exclusive(struct cyttsp4 *cd, void *ownptr, int timeout_ms) { … } /* * returns error if was not owned */ static int cyttsp4_release_exclusive(struct cyttsp4 *cd, void *ownptr) { … } static int cyttsp4_wait_bl_heartbeat(struct cyttsp4 *cd) { … } static int cyttsp4_wait_sysinfo_mode(struct cyttsp4 *cd) { … } static int cyttsp4_reset_and_wait(struct cyttsp4 *cd) { … } /* * returns err if refused or timeout; block until mode change complete * bit is set (mode change interrupt) */ static int cyttsp4_set_mode(struct cyttsp4 *cd, int new_mode) { … } static void cyttsp4_watchdog_work(struct work_struct *work) { … } static int cyttsp4_core_sleep_(struct cyttsp4 *cd) { … } static int cyttsp4_startup_(struct cyttsp4 *cd) { … } static int cyttsp4_startup(struct cyttsp4 *cd) { … } static void cyttsp4_startup_work_function(struct work_struct *work) { … } static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd) { … } static int cyttsp4_core_sleep(struct cyttsp4 *cd) { … } static int cyttsp4_core_wake_(struct cyttsp4 *cd) { … } static int cyttsp4_core_wake(struct cyttsp4 *cd) { … } static int cyttsp4_core_suspend(struct device *dev) { … } static int cyttsp4_core_resume(struct device *dev) { … } EXPORT_GPL_RUNTIME_DEV_PM_OPS(…); static int cyttsp4_mt_open(struct input_dev *input) { … } static void cyttsp4_mt_close(struct input_dev *input) { … } static int cyttsp4_setup_input_device(struct cyttsp4 *cd) { … } static int cyttsp4_mt_probe(struct cyttsp4 *cd) { … } struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops, struct device *dev, u16 irq, size_t xfer_buf_size) { … } EXPORT_SYMBOL_GPL(…); static void cyttsp4_mt_release(struct cyttsp4_mt_data *md) { … } int cyttsp4_remove(struct cyttsp4 *cd) { … } EXPORT_SYMBOL_GPL(…); MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …;
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