127 lines
No EOL
3.6 KiB
C
127 lines
No EOL
3.6 KiB
C
/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#define DT_DRV_COMPAT pixart_pmw33xx
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#include <device.h>
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#include <drivers/gpio.h>
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#include <sys/util.h>
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#include <kernel.h>
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#include <drivers/sensor.h>
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#include "pmw33xx.h"
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// extern struct pmw33xx_data pmw33xx_driver;
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#include <logging/log.h>
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LOG_MODULE_DECLARE(PMW33XX, CONFIG_SENSOR_LOG_LEVEL);
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static inline void setup_int(const struct device *dev, bool enable) {
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struct pmw33xx_data *data = dev->data;
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const struct pmw33xx_config *cfg = dev->config;
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gpio_pin_configure(cfg->motswk_spec.port, cfg->motswk_spec.pin, cfg->motswk_spec.dt_flags);
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if (gpio_pin_interrupt_configure(cfg->motswk_spec.port, cfg->motswk_spec.pin,
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enable ? GPIO_INT_EDGE_TO_ACTIVE : GPIO_INT_DISABLE)) {
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LOG_WRN("Unable to set MOTSWK GPIO interrupt");
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}
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}
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static void pmw33xx_motswk_gpio_callback(const struct device *dev, struct gpio_callback *cb,
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uint32_t pins) {
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struct pmw33xx_data *drv_data = CONTAINER_OF(cb, struct pmw33xx_data, motswk_gpio_cb);
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LOG_DBG("");
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setup_int(drv_data->dev, false);
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#if defined(CONFIG_PMW33XX_TRIGGER_OWN_THREAD)
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k_sem_give(&drv_data->gpio_sem);
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#elif defined(CONFIG_PMW33XX_TRIGGER_GLOBAL_THREAD)
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k_work_submit(&drv_data->work);
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#endif
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}
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static void pmw33xx_thread_cb(const struct device *dev) {
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struct pmw33xx_data *drv_data = dev->data;
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LOG_DBG("%p", drv_data->handler);
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drv_data->handler(dev, drv_data->trigger);
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// Enable once the wall/spam of interrupts is solved
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setup_int(dev, true);
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}
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#ifdef CONFIG_PMW33XX_TRIGGER_OWN_THREAD
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static void pmw33xx_thread(int dev_ptr, int unused) {
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const struct device *dev = INT_TO_POINTER(dev_ptr);
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struct pmw33xx_data *drv_data = dev->data;
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ARG_UNUSED(unused);
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while (1) {
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k_sem_take(&drv_data->gpio_sem, K_FOREVER);
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pmw33xx_thread_cb(dev);
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}
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}
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#endif
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#ifdef CONFIG_PMW33XX_TRIGGER_GLOBAL_THREAD
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static void pmw33xx_work_cb(struct k_work *work) {
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struct pmw33xx_data *drv_data = CONTAINER_OF(work, struct pmw33xx_data, work);
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LOG_DBG(" ");
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pmw33xx_thread_cb(drv_data->dev);
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}
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#endif
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int pmw33xx_trigger_set(const struct device *dev, const struct sensor_trigger *trig,
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sensor_trigger_handler_t handler) {
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struct pmw33xx_data *drv_data = dev->data;
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setup_int(dev, false);
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k_msleep(5);
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drv_data->trigger = trig;
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drv_data->handler = handler;
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setup_int(dev, true);
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// reset motion on int setup
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pmw33xx_reset_motion(dev);
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return 0;
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}
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int pmw33xx_init_interrupt(const struct device *dev) {
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struct pmw33xx_data *drv_data = dev->data;
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const struct pmw33xx_config *drv_cfg = dev->config;
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drv_data->dev = dev;
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/* setup gpio interrupt */
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gpio_init_callback(&drv_data->motswk_gpio_cb, pmw33xx_motswk_gpio_callback,
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BIT(drv_cfg->motswk_spec.pin));
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int err = gpio_add_callback(drv_cfg->motswk_spec.port, &drv_data->motswk_gpio_cb);
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if (err < 0) {
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LOG_DBG("Failed to set MOTSWK callback!");
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return -EIO;
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}
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#if defined(CONFIG_PMW33XX_TRIGGER_OWN_THREAD)
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k_sem_init(&drv_data->gpio_sem, 0, UINT_MAX);
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k_thread_create(&drv_data->thread, drv_data->thread_stack, CONFIG_PMW33XX_THREAD_STACK_SIZE,
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(k_thread_entry_t)pmw33xx_thread, dev, 0, NULL,
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K_PRIO_COOP(CONFIG_PMW33XX_THREAD_PRIORITY), 0, K_NO_WAIT);
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#elif defined(CONFIG_PMW33XX_TRIGGER_GLOBAL_THREAD)
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k_work_init(&drv_data->work, pmw33xx_work_cb);
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#endif
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return 0;
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} |