| /* |
| * Copyright (c) 2016 Intel Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <device.h> |
| #include <gpio.h> |
| #include <misc/util.h> |
| #include <nanokernel.h> |
| #include <sensor.h> |
| |
| #include "sensor_tmp007.h" |
| |
| extern struct tmp007_data tmp007_driver; |
| |
| int tmp007_attr_set(struct device *dev, |
| enum sensor_channel chan, |
| enum sensor_attribute attr, |
| const struct sensor_value *val) |
| { |
| struct tmp007_data *drv_data = dev->driver_data; |
| int64_t value; |
| uint8_t reg; |
| |
| if (chan != SENSOR_CHAN_TEMP) { |
| return -ENOTSUP; |
| } |
| |
| if (attr == SENSOR_ATTR_UPPER_THRESH) { |
| reg = TMP007_REG_TOBJ_TH_HIGH; |
| } else if (attr == SENSOR_ATTR_LOWER_THRESH) { |
| reg = TMP007_REG_TOBJ_TH_LOW; |
| } else { |
| return -ENOTSUP; |
| } |
| |
| value = (int64_t)val->val1 * 1000000 + val->val2; |
| value = (value / TMP007_TEMP_TH_SCALE) << 6; |
| |
| if (tmp007_reg_write(drv_data, reg, value) != 0) { |
| DBG("Failed to set attribute!\n"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static void tmp007_gpio_callback(struct device *dev, |
| struct gpio_callback *cb, uint32_t pins) |
| { |
| struct tmp007_data *drv_data = |
| CONTAINER_OF(cb, struct tmp007_data, gpio_cb); |
| |
| gpio_pin_disable_callback(dev, CONFIG_TMP007_GPIO_PIN_NUM); |
| |
| #if defined(CONFIG_TMP007_TRIGGER_OWN_FIBER) |
| nano_sem_give(&drv_data->gpio_sem); |
| #elif defined(CONFIG_TMP007_TRIGGER_GLOBAL_FIBER) |
| nano_isr_fifo_put(sensor_get_work_fifo(), &drv_data->work); |
| #endif |
| } |
| |
| static void tmp007_fiber_cb(void *arg) |
| { |
| struct device *dev = arg; |
| struct tmp007_data *drv_data = dev->driver_data; |
| uint16_t status; |
| |
| if (tmp007_reg_read(drv_data, TMP007_REG_STATUS, &status) != 0) { |
| return; |
| } |
| |
| if (status & TMP007_DATA_READY_INT_BIT && |
| drv_data->drdy_handler != NULL) { |
| drv_data->drdy_handler(dev, &drv_data->drdy_trigger); |
| } |
| |
| if (status & TMP007_TOBJ_TH_INT_BITS && |
| drv_data->th_handler != NULL) { |
| drv_data->th_handler(dev, &drv_data->th_trigger); |
| } |
| |
| gpio_pin_enable_callback(drv_data->gpio, CONFIG_TMP007_GPIO_PIN_NUM); |
| } |
| |
| #ifdef CONFIG_TMP007_TRIGGER_OWN_FIBER |
| static void tmp007_fiber(int dev_ptr, int unused) |
| { |
| struct device *dev = INT_TO_POINTER(dev_ptr); |
| struct tmp007_data *drv_data = dev->driver_data; |
| |
| ARG_UNUSED(unused); |
| |
| while (1) { |
| nano_fiber_sem_take(&drv_data->gpio_sem, TICKS_UNLIMITED); |
| tmp007_fiber_cb(dev); |
| } |
| } |
| #endif |
| |
| int tmp007_trigger_set(struct device *dev, |
| const struct sensor_trigger *trig, |
| sensor_trigger_handler_t handler) |
| { |
| struct tmp007_data *drv_data = dev->driver_data; |
| |
| gpio_pin_disable_callback(drv_data->gpio, CONFIG_TMP007_GPIO_PIN_NUM); |
| |
| if (trig->type == SENSOR_TRIG_DATA_READY) { |
| drv_data->drdy_handler = handler; |
| drv_data->drdy_trigger = *trig; |
| } else if (trig->type == SENSOR_TRIG_THRESHOLD) { |
| drv_data->th_handler = handler; |
| drv_data->th_trigger = *trig; |
| } |
| |
| gpio_pin_enable_callback(drv_data->gpio, CONFIG_TMP007_GPIO_PIN_NUM); |
| |
| return 0; |
| } |
| |
| int tmp007_init_interrupt(struct device *dev) |
| { |
| struct tmp007_data *drv_data = dev->driver_data; |
| int rc; |
| |
| rc = tmp007_reg_update(drv_data, TMP007_REG_CONFIG, |
| TMP007_ALERT_EN_BIT, TMP007_ALERT_EN_BIT); |
| if (rc != 0) { |
| DBG("Failed to enable interrupt pin!\n"); |
| return -EIO; |
| } |
| |
| /* setup gpio interrupt */ |
| drv_data->gpio = device_get_binding(CONFIG_TMP007_GPIO_DEV_NAME); |
| if (drv_data->gpio == NULL) { |
| DBG("Failed to get pointer to %s device!\n", |
| CONFIG_TMP007_GPIO_DEV_NAME); |
| return -EINVAL; |
| } |
| |
| gpio_pin_configure(drv_data->gpio, CONFIG_TMP007_GPIO_PIN_NUM, |
| GPIO_DIR_IN | GPIO_INT | GPIO_INT_LEVEL | |
| GPIO_INT_ACTIVE_HIGH | GPIO_INT_DEBOUNCE); |
| |
| gpio_init_callback(&drv_data->gpio_cb, |
| tmp007_gpio_callback, |
| BIT(CONFIG_TMP007_GPIO_PIN_NUM)); |
| |
| rc = gpio_add_callback(drv_data->gpio, &drv_data->gpio_cb); |
| if (rc != 0) { |
| DBG("Failed to set gpio callback!\n"); |
| return -EIO; |
| } |
| |
| #if defined(CONFIG_TMP007_TRIGGER_OWN_FIBER) |
| nano_sem_init(&drv_data->gpio_sem); |
| |
| fiber_start(drv_data->fiber_stack, CONFIG_TMP007_FIBER_STACK_SIZE, |
| (nano_fiber_entry_t)tmp007_fiber, POINTER_TO_INT(dev), |
| 0, CONFIG_TMP007_FIBER_PRIORITY, 0); |
| #elif defined(CONFIG_TMP007_TRIGGER_GLOBAL_FIBER) |
| drv_data->work.handler = tmp007_fiber_cb; |
| drv_data->work.arg = dev; |
| #endif |
| |
| return 0; |
| } |