blob: 7434211f52ea29fee8f8a5e782072f19d9a3b20e [file] [log] [blame]
/*
* Copyright (c) 2019 - 2021 Henrik Brix Andersen <henrik@brixandersen.dk>
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT holtek_ht16k33_keyscan
/**
* @file
* @brief Keyscan driver for the HT16K33 I2C LED driver
*/
#include <zephyr.h>
#include <drivers/kscan.h>
#include <drivers/led/ht16k33.h>
#include <logging/log.h>
LOG_MODULE_REGISTER(kscan_ht16k33, CONFIG_KSCAN_LOG_LEVEL);
BUILD_ASSERT(CONFIG_KSCAN_INIT_PRIORITY > CONFIG_LED_INIT_PRIORITY,
"HT16K33 keyscan driver must be initialized after HT16K33 LED driver");
struct kscan_ht16k33_cfg {
const struct device *parent;
};
static int kscan_ht16k33_config(const struct device *dev,
kscan_callback_t callback)
{
const struct kscan_ht16k33_cfg *config = dev->config;
return ht16k33_register_keyscan_callback(config->parent, dev, callback);
}
static int kscan_ht16k33_init(const struct device *dev)
{
const struct kscan_ht16k33_cfg *config = dev->config;
if (!device_is_ready(config->parent)) {
LOG_ERR("HT16K33 parent device not ready");
return -EINVAL;
}
return 0;
}
static const struct kscan_driver_api kscan_ht16k33_api = {
.config = kscan_ht16k33_config,
};
#define KSCAN_HT16K33_DEVICE(id) \
static const struct kscan_ht16k33_cfg kscan_ht16k33_##id##_cfg = { \
.parent = DEVICE_DT_GET(DT_INST_BUS(id)), \
}; \
\
DEVICE_DT_INST_DEFINE(id, &kscan_ht16k33_init, \
NULL, NULL, \
&kscan_ht16k33_##id##_cfg, POST_KERNEL, \
CONFIG_KSCAN_INIT_PRIORITY, \
&kscan_ht16k33_api);
DT_INST_FOREACH_STATUS_OKAY(KSCAN_HT16K33_DEVICE)