zmk/app/module/drivers/sensor/ec11/ec11_trigger.c
Peter Johanson 690bc1bb44 refactor: Move drivers into properly module.
* Align our driver module layout to properly match Zephyr conventions,
  allowing proper CMake setup to amend the library for each type of driver.
2023-09-16 11:52:40 -07:00

147 lines
3.9 KiB
C

/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#define DT_DRV_COMPAT alps_ec11
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/sys/util.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/sensor.h>
#include "ec11.h"
extern struct ec11_data ec11_driver;
#include <zephyr/logging/log.h>
LOG_MODULE_DECLARE(EC11, CONFIG_SENSOR_LOG_LEVEL);
static inline void setup_int(const struct device *dev, bool enable) {
const struct ec11_config *cfg = dev->config;
LOG_DBG("enabled %s", (enable ? "true" : "false"));
if (gpio_pin_interrupt_configure_dt(&cfg->a, enable ? GPIO_INT_EDGE_BOTH : GPIO_INT_DISABLE)) {
LOG_WRN("Unable to set A pin GPIO interrupt");
}
if (gpio_pin_interrupt_configure_dt(&cfg->b, enable ? GPIO_INT_EDGE_BOTH : GPIO_INT_DISABLE)) {
LOG_WRN("Unable to set A pin GPIO interrupt");
}
}
static void ec11_a_gpio_callback(const struct device *dev, struct gpio_callback *cb,
uint32_t pins) {
struct ec11_data *drv_data = CONTAINER_OF(cb, struct ec11_data, a_gpio_cb);
LOG_DBG("");
setup_int(drv_data->dev, false);
#if defined(CONFIG_EC11_TRIGGER_OWN_THREAD)
k_sem_give(&drv_data->gpio_sem);
#elif defined(CONFIG_EC11_TRIGGER_GLOBAL_THREAD)
k_work_submit(&drv_data->work);
#endif
}
static void ec11_b_gpio_callback(const struct device *dev, struct gpio_callback *cb,
uint32_t pins) {
struct ec11_data *drv_data = CONTAINER_OF(cb, struct ec11_data, b_gpio_cb);
LOG_DBG("");
setup_int(drv_data->dev, false);
#if defined(CONFIG_EC11_TRIGGER_OWN_THREAD)
k_sem_give(&drv_data->gpio_sem);
#elif defined(CONFIG_EC11_TRIGGER_GLOBAL_THREAD)
k_work_submit(&drv_data->work);
#endif
}
static void ec11_thread_cb(const struct device *dev) {
struct ec11_data *drv_data = dev->data;
drv_data->handler(dev, drv_data->trigger);
setup_int(dev, true);
}
#ifdef CONFIG_EC11_TRIGGER_OWN_THREAD
static void ec11_thread(int dev_ptr, int unused) {
const struct device *dev = INT_TO_POINTER(dev_ptr);
struct ec11_data *drv_data = dev->data;
ARG_UNUSED(unused);
while (1) {
k_sem_take(&drv_data->gpio_sem, K_FOREVER);
ec11_thread_cb(dev);
}
}
#endif
#ifdef CONFIG_EC11_TRIGGER_GLOBAL_THREAD
static void ec11_work_cb(struct k_work *work) {
struct ec11_data *drv_data = CONTAINER_OF(work, struct ec11_data, work);
LOG_DBG("");
ec11_thread_cb(drv_data->dev);
}
#endif
int ec11_trigger_set(const struct device *dev, const struct sensor_trigger *trig,
sensor_trigger_handler_t handler) {
struct ec11_data *drv_data = dev->data;
setup_int(dev, false);
k_msleep(5);
drv_data->trigger = trig;
drv_data->handler = handler;
setup_int(dev, true);
return 0;
}
int ec11_init_interrupt(const struct device *dev) {
struct ec11_data *drv_data = dev->data;
const struct ec11_config *drv_cfg = dev->config;
drv_data->dev = dev;
/* setup gpio interrupt */
gpio_init_callback(&drv_data->a_gpio_cb, ec11_a_gpio_callback, BIT(drv_cfg->a.pin));
if (gpio_add_callback(drv_cfg->a.port, &drv_data->a_gpio_cb) < 0) {
LOG_DBG("Failed to set A callback!");
return -EIO;
}
gpio_init_callback(&drv_data->b_gpio_cb, ec11_b_gpio_callback, BIT(drv_cfg->b.pin));
if (gpio_add_callback(drv_cfg->b.port, &drv_data->b_gpio_cb) < 0) {
LOG_DBG("Failed to set B callback!");
return -EIO;
}
#if defined(CONFIG_EC11_TRIGGER_OWN_THREAD)
k_sem_init(&drv_data->gpio_sem, 0, UINT_MAX);
k_thread_create(&drv_data->thread, drv_data->thread_stack, CONFIG_EC11_THREAD_STACK_SIZE,
(k_thread_entry_t)ec11_thread, dev, 0, NULL,
K_PRIO_COOP(CONFIG_EC11_THREAD_PRIORITY), 0, K_NO_WAIT);
#elif defined(CONFIG_EC11_TRIGGER_GLOBAL_THREAD)
k_work_init(&drv_data->work, ec11_work_cb);
#endif
return 0;
}