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176 lines
3.8 KiB
176 lines
3.8 KiB
/* |
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* Copyright (c) 2016 Intel Corporation |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#define DT_DRV_COMPAT alps_ec11 |
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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 "ec11.h" |
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extern struct ec11_data ec11_driver; |
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#include <logging/log.h> |
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LOG_MODULE_DECLARE(EC11, CONFIG_SENSOR_LOG_LEVEL); |
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static inline void setup_int(struct device *dev, |
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bool enable) |
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{ |
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struct ec11_data *data = dev->driver_data; |
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const struct ec11_config *cfg = dev->config_info; |
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LOG_DBG("enabled %s", (enable ? "true" : "false")); |
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if (gpio_pin_interrupt_configure(data->a, |
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cfg->a_pin, |
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enable |
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? GPIO_INT_EDGE_BOTH |
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: GPIO_INT_DISABLE)) { |
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LOG_WRN("Unable to set A pin GPIO interrupt"); |
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} |
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if (gpio_pin_interrupt_configure(data->b, |
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cfg->b_pin, |
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enable |
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? GPIO_INT_EDGE_BOTH |
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: GPIO_INT_DISABLE)) { |
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LOG_WRN("Unable to set A pin GPIO interrupt"); |
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} |
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} |
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static void ec11_a_gpio_callback(struct device *dev, |
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struct gpio_callback *cb, u32_t pins) |
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{ |
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struct ec11_data *drv_data = |
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CONTAINER_OF(cb, struct ec11_data, a_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_EC11_TRIGGER_OWN_THREAD) |
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k_sem_give(&drv_data->gpio_sem); |
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#elif defined(CONFIG_EC11_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 ec11_b_gpio_callback(struct device *dev, |
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struct gpio_callback *cb, u32_t pins) |
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{ |
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struct ec11_data *drv_data = |
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CONTAINER_OF(cb, struct ec11_data, b_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_EC11_TRIGGER_OWN_THREAD) |
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k_sem_give(&drv_data->gpio_sem); |
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#elif defined(CONFIG_EC11_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 ec11_thread_cb(void *arg) |
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{ |
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struct device *dev = arg; |
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struct ec11_data *drv_data = dev->driver_data; |
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drv_data->handler(dev, drv_data->trigger); |
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setup_int(dev, true); |
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} |
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#ifdef CONFIG_EC11_TRIGGER_OWN_THREAD |
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static void ec11_thread(int dev_ptr, int unused) |
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{ |
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struct device *dev = INT_TO_POINTER(dev_ptr); |
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struct ec11_data *drv_data = dev->driver_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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ec11_thread_cb(dev); |
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} |
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} |
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#endif |
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#ifdef CONFIG_EC11_TRIGGER_GLOBAL_THREAD |
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static void ec11_work_cb(struct k_work *work) |
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{ |
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struct ec11_data *drv_data = |
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CONTAINER_OF(work, struct ec11_data, work); |
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LOG_DBG(""); |
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ec11_thread_cb(drv_data->dev); |
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} |
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#endif |
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int ec11_trigger_set(struct device *dev, |
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const struct sensor_trigger *trig, |
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sensor_trigger_handler_t handler) |
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{ |
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struct ec11_data *drv_data = dev->driver_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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return 0; |
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} |
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int ec11_init_interrupt(struct device *dev) |
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{ |
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struct ec11_data *drv_data = dev->driver_data; |
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const struct ec11_config *drv_cfg = dev->config_info; |
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drv_data->dev = dev; |
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/* setup gpio interrupt */ |
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gpio_init_callback(&drv_data->a_gpio_cb, |
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ec11_a_gpio_callback, |
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BIT(drv_cfg->a_pin)); |
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if (gpio_add_callback(drv_data->a, &drv_data->a_gpio_cb) < 0) { |
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LOG_DBG("Failed to set A callback!"); |
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return -EIO; |
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} |
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gpio_init_callback(&drv_data->b_gpio_cb, |
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ec11_b_gpio_callback, |
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BIT(drv_cfg->b_pin)); |
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if (gpio_add_callback(drv_data->b, &drv_data->b_gpio_cb) < 0) { |
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LOG_DBG("Failed to set B callback!"); |
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return -EIO; |
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} |
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#if defined(CONFIG_EC11_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, |
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CONFIG_EC11_THREAD_STACK_SIZE, |
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(k_thread_entry_t)ec11_thread, dev, |
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0, NULL, K_PRIO_COOP(CONFIG_EC11_THREAD_PRIORITY), |
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0, K_NO_WAIT); |
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#elif defined(CONFIG_EC11_TRIGGER_GLOBAL_THREAD) |
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k_work_init(&drv_data->work, ec11_work_cb); |
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#endif |
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return 0; |
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}
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