| /* pinmux_dev_galileo.c - pinmux_dev driver for Galileo */ |
| |
| /* |
| * 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 <nanokernel.h> |
| #include <board.h> |
| #include <device.h> |
| #include <init.h> |
| |
| #include <pinmux.h> |
| #include <i2c.h> |
| #include <gpio.h> |
| #include <pwm.h> |
| |
| #include <pinmux/pinmux.h> |
| |
| #include "pinmux_galileo.h" |
| |
| static int galileo_dev_pullup(struct device *dev, |
| uint32_t pin, |
| uint8_t func) |
| { |
| /* |
| * Nothing to do. |
| * On Galileo the pullup operation is handled through the selection |
| * of an actual pin |
| */ |
| ARG_UNUSED(dev); |
| ARG_UNUSED(pin); |
| ARG_UNUSED(func); |
| |
| return 0; |
| } |
| |
| static int galileo_dev_input_enable(struct device *dev, |
| uint32_t pin, |
| uint8_t func) |
| { |
| /* |
| * Nothing to do. |
| * On Galileo select a pin for input enabling is handled through the |
| * selection of an actual pin user configuration. |
| */ |
| ARG_UNUSED(dev); |
| ARG_UNUSED(pin); |
| ARG_UNUSED(func); |
| |
| return 0; |
| } |
| |
| static int galileo_dev_set(struct device *dev, |
| uint32_t pin, |
| uint32_t func) |
| { |
| if (pin > PINMUX_NUM_PINS) { |
| return -EINVAL; |
| } |
| |
| return _galileo_pinmux_set_pin(dev, pin, func); |
| } |
| |
| static int galileo_dev_get(struct device *dev, |
| uint32_t pin, |
| uint32_t *func) |
| { |
| if (pin > PINMUX_NUM_PINS) { |
| return -EINVAL; |
| } |
| |
| return _galileo_pinmux_get_pin(dev, pin, func); |
| } |
| |
| static struct pinmux_driver_api api_funcs = { |
| .set = galileo_dev_set, |
| .get = galileo_dev_get, |
| .pullup = galileo_dev_pullup, |
| .input = galileo_dev_input_enable |
| }; |
| |
| static int pinmux_dev_galileo_initialize(struct device *port) |
| { |
| return 0; |
| } |
| |
| /* |
| * This needs to be a level 2 or later init process due to the following |
| * dependency chain: |
| * 0 - I2C |
| * 1 - PCA9535 and PCAL9685 |
| * 2 - pinmux |
| */ |
| DEVICE_AND_API_INIT(pmux_dev, CONFIG_PINMUX_DEV_NAME, |
| &pinmux_dev_galileo_initialize, |
| &galileo_pinmux_driver, NULL, |
| SECONDARY, CONFIG_PINMUX_INIT_PRIORITY, |
| &api_funcs); |