mlaz commented on a change in pull request #2255: Add SGM4056 charger driver to pinetime BSP URL: https://github.com/apache/mynewt-core/pull/2255#discussion_r401104932
########## File path: hw/drivers/chg_ctrl/sgm4056/src/sgm4056.c ########## @@ -0,0 +1,192 @@ +/* + * Copyright 2020 Casper Meijn <cas...@meijn.net> + * + * 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 "sgm4056/sgm4056.h" +#include "hal/hal_gpio.h" + +#if MYNEWT_VAL(SGM4056_USE_CHARGE_CONTROL) + +static int +sgm4056_chg_ctrl_get_status(struct charge_control * chg_ctrl, int * status) +{ + struct sgm4056_dev *dev; + int rc; + + dev = (struct sgm4056_dev *)CHARGE_CONTROL_GET_DEVICE(chg_ctrl); + if (dev == NULL) { + rc = SYS_ENODEV; + goto err; + } + + rc = sgm4056_get_charger_status(dev, (charge_control_status_t *)status); + +err: + return rc; +} + +static int +sgm4056_chg_ctrl_read(struct charge_control * chg_ctrl, + charge_control_type_t type, charge_control_data_func_t data_func, + void *data_arg, uint32_t timeout) +{ + int rc = 0; + int status; + + if (type & CHARGE_CONTROL_TYPE_STATUS) { + rc = sgm4056_chg_ctrl_get_status(chg_ctrl, &status); + if (rc) { + goto err; + } + + if(data_func) { + data_func(chg_ctrl, data_arg, (void*)&status, CHARGE_CONTROL_TYPE_STATUS); + } + } + +err: + return rc; +} + +static const struct charge_control_driver sgm4056_chg_ctrl_driver = { + .ccd_read = sgm4056_chg_ctrl_read, + .ccd_get_config = NULL, + .ccd_set_config = NULL, + .ccd_get_status = sgm4056_chg_ctrl_get_status, + .ccd_get_fault = NULL, + .ccd_enable = NULL, + .ccd_disable = NULL, +}; + +static void +sgm4056_interrupt_event_handler(struct os_event *ev) +{ + struct sgm4056_dev *dev = (struct sgm4056_dev *)ev->ev_arg; + assert(dev); + + charge_control_read(&dev->chg_ctrl, CHARGE_CONTROL_TYPE_STATUS, + NULL, NULL, OS_TIMEOUT_NEVER); +} + +static void +sgm4056_irq_handler(void *arg) +{ + struct sgm4056_dev *dev = (struct sgm4056_dev *)arg; + assert(dev); + + os_eventq_put(os_eventq_dflt_get(), &dev->interrupt_event); +} +#endif + +int +sgm4056_dev_init(struct os_dev *odev, void *arg) { + struct sgm4056_dev *dev = (struct sgm4056_dev *)odev; + const struct sgm4056_dev_config *cfg = arg; + int rc = 0; + + if (!dev) { + rc = SYS_ENODEV; + goto err; + } + + dev->config = *cfg; + +#if MYNEWT_VAL(SGM4056_USE_CHARGE_CONTROL) + dev->interrupt_event.ev_cb = sgm4056_interrupt_event_handler; + dev->interrupt_event.ev_arg = dev; + + rc = hal_gpio_irq_init(dev->config.power_presence_pin, sgm4056_irq_handler, dev, HAL_GPIO_TRIG_BOTH, HAL_GPIO_PULL_NONE); + hal_gpio_irq_enable(dev->config.power_presence_pin); +#else + rc = hal_gpio_init_in(dev->config.power_presence_pin, HAL_GPIO_PULL_NONE); +#endif + if (rc) { + goto err; + } + + rc = hal_gpio_init_in(dev->config.charge_indicator_pin, HAL_GPIO_PULL_NONE); + if (rc) { + goto err; + } + +#if MYNEWT_VAL(SGM4056_USE_CHARGE_CONTROL) + rc = charge_control_init(&dev->chg_ctrl, odev); + if (rc) { + goto err; + } + + rc = charge_control_set_driver(&dev->chg_ctrl, CHARGE_CONTROL_TYPE_STATUS, + (struct charge_control_driver *)&sgm4056_chg_ctrl_driver); + if (rc) { + goto err; + } + + rc = charge_control_set_type_mask(&dev->chg_ctrl, CHARGE_CONTROL_TYPE_STATUS); + if (rc) { + goto err; + } + + rc = charge_control_mgr_register(&dev->chg_ctrl); + if (rc) { + goto err; + } +#endif + +err: + return rc; +} + +int sgm4056_get_power_presence(struct sgm4056_dev *dev, int *power_present) { + int gpio_value = hal_gpio_read(dev->config.power_presence_pin); + + *power_present = (gpio_value == 0); + return 0; +} + +int sgm4056_get_charge_indicator(struct sgm4056_dev *dev, int *charging) { Review comment: Same as above. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
