| /* |
| * Copyright (c) 2019 Peter Bigot Consulting, LLC |
| * Copyright (c) 2019 Foundries.io |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <init.h> |
| #include <drivers/gpio.h> |
| #include "board.h" |
| |
| static inline void external_antenna(bool on) |
| { |
| struct device *ufl_gpio_dev, *pcb_gpio_dev; |
| |
| ufl_gpio_dev = device_get_binding(SKY_UFLn_GPIO_NAME); |
| if (!ufl_gpio_dev) { |
| return; |
| } |
| |
| pcb_gpio_dev = device_get_binding(SKY_PCBn_GPIO_NAME); |
| if (!pcb_gpio_dev) { |
| return; |
| } |
| |
| gpio_pin_configure(ufl_gpio_dev, SKY_UFLn_GPIO_PIN, |
| GPIO_DIR_OUT | SKY_UFLn_GPIO_FLAGS); |
| gpio_pin_configure(pcb_gpio_dev, SKY_PCBn_GPIO_PIN, |
| GPIO_DIR_OUT | SKY_PCBn_GPIO_FLAGS); |
| |
| if (on) { |
| gpio_pin_write(ufl_gpio_dev, SKY_UFLn_GPIO_PIN, 0); |
| gpio_pin_write(pcb_gpio_dev, SKY_PCBn_GPIO_PIN, 1); |
| } else { |
| gpio_pin_write(ufl_gpio_dev, SKY_UFLn_GPIO_PIN, 1); |
| gpio_pin_write(pcb_gpio_dev, SKY_PCBn_GPIO_PIN, 0); |
| } |
| } |
| |
| static int board_particle_argon_init(struct device *dev) |
| { |
| ARG_UNUSED(dev); |
| |
| /* |
| * On power-up the SKY13351 is left uncontrolled, so neither |
| * PCB nor external antenna is selected. Select the PCB |
| * antenna. |
| */ |
| external_antenna(false); |
| |
| return 0; |
| } |
| |
| /* needs to be done after GPIO driver init */ |
| SYS_INIT(board_particle_argon_init, POST_KERNEL, |
| CONFIG_KERNEL_INIT_PRIORITY_DEFAULT); |