mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-31 04:16:28 +00:00
7c95d503b0
Use gpio_pin_t uniformly when passing pin indexes to the driver. Use gpio_flags_t uniformly when passing flags to the driver. Change name of pin configuration function in API function table to be consistent with other API functions. Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
315 lines
7.0 KiB
C
315 lines
7.0 KiB
C
/*
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* Copyright (c) 2019 Henrik Brix Andersen <henrik@brixandersen.dk>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief GPIO driver for the HT16K33 I2C LED driver with keyscan
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*/
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#include <drivers/gpio.h>
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#include <zephyr.h>
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#define LOG_LEVEL CONFIG_GPIO_LOG_LEVEL
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#include <logging/log.h>
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LOG_MODULE_REGISTER(gpio_ht16k33);
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#include <drivers/led/ht16k33.h>
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#include "gpio_utils.h"
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/* HT16K33 size definitions */
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#define HT16K33_KEYSCAN_ROWS 3
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struct gpio_ht16k33_cfg {
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/* gpio_driver_config needs to be first */
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struct gpio_driver_config common;
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char *parent_dev_name;
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u8_t keyscan_idx;
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};
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struct gpio_ht16k33_data {
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/* gpio_driver_data needs to be first */
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struct gpio_driver_data common;
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struct device *parent;
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sys_slist_t callbacks;
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};
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static int gpio_ht16k33_cfg(struct device *dev,
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gpio_pin_t pin,
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gpio_flags_t flags)
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{
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ARG_UNUSED(dev);
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ARG_UNUSED(pin);
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/* Keyscan is input-only */
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if (((flags & (GPIO_INPUT | GPIO_OUTPUT)) == GPIO_DISCONNECTED)
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|| ((flags & GPIO_OUTPUT) != 0)) {
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return -ENOTSUP;
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}
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return 0;
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}
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static int gpio_ht16k33_port_get_raw(struct device *port,
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gpio_port_value_t *value)
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{
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ARG_UNUSED(port);
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ARG_UNUSED(value);
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/* Keyscan only supports interrupt mode */
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return -ENOTSUP;
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}
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static int gpio_ht16k33_port_set_masked_raw(struct device *port,
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gpio_port_pins_t mask,
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gpio_port_value_t value)
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{
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ARG_UNUSED(port);
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ARG_UNUSED(mask);
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ARG_UNUSED(value);
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/* Keyscan is input-only */
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return -ENOTSUP;
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}
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static int gpio_ht16k33_port_set_bits_raw(struct device *port,
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gpio_port_pins_t pins)
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{
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ARG_UNUSED(port);
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ARG_UNUSED(pins);
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/* Keyscan is input-only */
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return -ENOTSUP;
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}
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static int gpio_ht16k33_port_clear_bits_raw(struct device *port,
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gpio_port_pins_t pins)
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{
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ARG_UNUSED(port);
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ARG_UNUSED(pins);
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/* Keyscan is input-only */
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return -ENOTSUP;
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}
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static int gpio_ht16k33_port_toggle_bits(struct device *port,
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gpio_port_pins_t pins)
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{
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ARG_UNUSED(port);
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ARG_UNUSED(pins);
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/* Keyscan is input-only */
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return -ENOTSUP;
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}
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static int gpio_ht16k33_pin_interrupt_configure(struct device *port,
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gpio_pin_t pin,
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enum gpio_int_mode int_mode,
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enum gpio_int_trig int_trig)
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{
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ARG_UNUSED(port);
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ARG_UNUSED(pin);
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ARG_UNUSED(int_mode);
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ARG_UNUSED(int_trig);
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/* Interrupts are always enabled */
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return 0;
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}
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void ht16k33_process_keyscan_row_data(struct device *dev,
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u32_t keys)
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{
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struct gpio_ht16k33_data *data = dev->driver_data;
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gpio_fire_callbacks(&data->callbacks, dev, keys);
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}
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static int gpio_ht16k33_manage_callback(struct device *dev,
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struct gpio_callback *callback,
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bool set)
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{
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struct gpio_ht16k33_data *data = dev->driver_data;
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return gpio_manage_callback(&data->callbacks, callback, set);
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}
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static int gpio_ht16k33_enable_callback(struct device *dev,
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gpio_pin_t pin)
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{
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/* All callbacks are always enabled */
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return 0;
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}
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static int gpio_ht16k33_disable_callback(struct device *dev,
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gpio_pin_t pin)
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{
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/* Individual callbacks can not be disabled */
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return -ENOTSUP;
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}
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static u32_t gpio_ht16k33_get_pending_int(struct device *dev)
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{
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struct gpio_ht16k33_data *data = dev->driver_data;
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return ht16k33_get_pending_int(data->parent);
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}
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static int gpio_ht16k33_init(struct device *dev)
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{
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const struct gpio_ht16k33_cfg *config = dev->config->config_info;
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struct gpio_ht16k33_data *data = dev->driver_data;
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if (config->keyscan_idx >= HT16K33_KEYSCAN_ROWS) {
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LOG_ERR("HT16K33 keyscan index out of bounds (%d)",
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config->keyscan_idx);
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return -EINVAL;
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}
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/* Establish reference to parent and vice versa */
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data->parent = device_get_binding(config->parent_dev_name);
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if (!data->parent) {
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LOG_ERR("HT16K33 parent device '%s' not found",
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config->parent_dev_name);
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return -EINVAL;
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}
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return ht16k33_register_keyscan_device(data->parent, dev,
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config->keyscan_idx);
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}
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static const struct gpio_driver_api gpio_ht16k33_api = {
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.pin_configure = gpio_ht16k33_cfg,
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.port_get_raw = gpio_ht16k33_port_get_raw,
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.port_set_masked_raw = gpio_ht16k33_port_set_masked_raw,
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.port_set_bits_raw = gpio_ht16k33_port_set_bits_raw,
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.port_clear_bits_raw = gpio_ht16k33_port_clear_bits_raw,
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.port_toggle_bits = gpio_ht16k33_port_toggle_bits,
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.pin_interrupt_configure = gpio_ht16k33_pin_interrupt_configure,
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.manage_callback = gpio_ht16k33_manage_callback,
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.enable_callback = gpio_ht16k33_enable_callback,
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.disable_callback = gpio_ht16k33_disable_callback,
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.get_pending_int = gpio_ht16k33_get_pending_int,
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};
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#define GPIO_HT16K33_DEVICE(id) \
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static const struct gpio_ht16k33_cfg gpio_ht16k33_##id##_cfg = {\
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.common = { \
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.port_pin_mask = GPIO_PORT_PIN_MASK_FROM_NGPIOS(13), \
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}, \
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.parent_dev_name = \
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DT_INST_##id##_HOLTEK_HT16K33_KEYSCAN_BUS_NAME, \
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.keyscan_idx = \
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DT_INST_##id##_HOLTEK_HT16K33_KEYSCAN_BASE_ADDRESS, \
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}; \
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\
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static struct gpio_ht16k33_data gpio_ht16k33_##id##_data; \
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\
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DEVICE_AND_API_INIT(gpio_ht16k33_##id, \
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DT_INST_##id##_HOLTEK_HT16K33_KEYSCAN_LABEL, \
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&gpio_ht16k33_init, \
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&gpio_ht16k33_##id##_data, \
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&gpio_ht16k33_##id##_cfg, POST_KERNEL, \
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CONFIG_GPIO_HT16K33_INIT_PRIORITY, \
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&gpio_ht16k33_api)
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/* Support up to eight HT16K33 devices, each with three keyscan devices */
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#ifdef DT_INST_0_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(0);
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#endif
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#ifdef DT_INST_1_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(1);
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#endif
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#ifdef DT_INST_2_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(2);
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#endif
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#ifdef DT_INST_3_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(3);
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#endif
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#ifdef DT_INST_4_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(4);
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#endif
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#ifdef DT_INST_5_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(5);
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#endif
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#ifdef DT_INST_6_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(6);
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#endif
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#ifdef DT_INST_7_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(7);
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#endif
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#ifdef DT_INST_8_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(8);
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#endif
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#ifdef DT_INST_9_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(9);
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#endif
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#ifdef DT_INST_10_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(10);
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#endif
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#ifdef DT_INST_11_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(11);
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#endif
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#ifdef DT_INST_12_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(12);
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#endif
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#ifdef DT_INST_13_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(13);
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#endif
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#ifdef DT_INST_14_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(14);
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#endif
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#ifdef DT_INST_15_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(15);
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#endif
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#ifdef DT_INST_16_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(16);
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#endif
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#ifdef DT_INST_17_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(17);
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#endif
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#ifdef DT_INST_18_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(18);
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#endif
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#ifdef DT_INST_19_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(19);
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#endif
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#ifdef DT_INST_20_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(20);
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#endif
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#ifdef DT_INST_21_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(21);
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#endif
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#ifdef DT_INST_22_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(22);
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#endif
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#ifdef DT_INST_23_HOLTEK_HT16K33_KEYSCAN
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GPIO_HT16K33_DEVICE(23);
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#endif
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