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watchdog: Add watchdog driver

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Add watchdog driver for the RT1050/60

Signed-off-by: Crist Xu <crist.xu@nxp.com>
This commit is contained in:
Crist Xu 2020-07-27 12:29:58 +08:00 • committed by Carles Cufí
commit 237b34ef2d
14 changed files with 241 additions and 3 deletions
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167
drivers/watchdog/wdt_mcux_imx_wdog.c Normal file
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/*
* Copyright (C) 2020, NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT nxp_imx_wdog
#include <drivers/watchdog.h>
#include <fsl_wdog.h>
#define LOG_LEVEL CONFIG_WDT_LOG_LEVEL
#include <logging/log.h>
LOG_MODULE_REGISTER(wdt_mcux_wdog);
#define WDOG_TMOUT_SEC(x) ((x * 2 / MSEC_PER_SEC) - 1)
struct mcux_wdog_config {
WDOG_Type *base;
void (*irq_config_func)(const struct device *dev);
};
struct mcux_wdog_data {
wdt_callback_t callback;
wdog_config_t wdog_config;
bool timeout_valid;
};
static int mcux_wdog_setup(const struct device *dev, uint8_t options)
{
const struct mcux_wdog_config *config = dev->config;
struct mcux_wdog_data *data = dev->data;
WDOG_Type *base = config->base;
if (!data->timeout_valid) {
LOG_ERR("No valid timeouts installed");
return -EINVAL;
}
data->wdog_config.workMode.enableStop =
(options & WDT_OPT_PAUSE_IN_SLEEP) == 0U;
data->wdog_config.workMode.enableDebug =
(options & WDT_OPT_PAUSE_HALTED_BY_DBG) == 0U;
WDOG_Init(base, &data->wdog_config);
LOG_DBG("Setup the watchdog");
return 0;
}
static int mcux_wdog_disable(const struct device *dev)
{
const struct mcux_wdog_config *config = dev->config;
struct mcux_wdog_data *data = dev->data;
WDOG_Type *base = config->base;
WDOG_Deinit(base);
data->timeout_valid = false;
LOG_DBG("Disabled the watchdog");
return 0;
}
static int mcux_wdog_install_timeout(const struct device *dev,
const struct wdt_timeout_cfg *cfg)
{
struct mcux_wdog_data *data = dev->data;
if (data->timeout_valid) {
LOG_ERR("No more timeouts can be installed");
return -ENOMEM;
}
WDOG_GetDefaultConfig(&data->wdog_config);
data->wdog_config.interruptTimeValue = 0U;
data->wdog_config.timeoutValue =
WDOG_TMOUT_SEC(cfg->window.max);
if (cfg->window.min) {
LOG_ERR("Invalid window.min, Do not support window model");
return -EINVAL;
}
if (data->wdog_config.timeoutValue > 128) {
LOG_ERR("Invalid timeoutValue, valid (0.5s - 128.0s)");
return -EINVAL;
}
data->wdog_config.enableInterrupt = cfg->callback != NULL;
data->callback = cfg->callback;
data->timeout_valid = true;
return 0;
}
static int mcux_wdog_feed(const struct device *dev, int channel_id)
{
const struct mcux_wdog_config *config = dev->config;
WDOG_Type *base = config->base;
if (channel_id != 0) {
LOG_ERR("Invalid channel id");
return -EINVAL;
}
WDOG_Refresh(base);
LOG_DBG("Fed the watchdog");
return 0;
}
static void mcux_wdog_isr(void *arg)
{
const struct device *dev = (const struct device *)arg;
const struct mcux_wdog_config *config = dev->config;
struct mcux_wdog_data *data = dev->data;
WDOG_Type *base = config->base;
uint32_t flags;
flags = WDOG_GetStatusFlags(base);
WDOG_ClearInterruptStatus(base, flags);
if (data->callback) {
data->callback(dev, 0);
}
}
static int mcux_wdog_init(const struct device *dev)
{
const struct mcux_wdog_config *config = dev->config;
config->irq_config_func(dev);
return 0;
}
static const struct wdt_driver_api mcux_wdog_api = {
.setup = mcux_wdog_setup,
.disable = mcux_wdog_disable,
.install_timeout = mcux_wdog_install_timeout,
.feed = mcux_wdog_feed,
};
static void mcux_wdog_config_func(const struct device *dev);
static const struct mcux_wdog_config mcux_wdog_config = {
.base = (WDOG_Type *) DT_INST_REG_ADDR(0),
.irq_config_func = mcux_wdog_config_func,
};
static struct mcux_wdog_data mcux_wdog_data;
DEVICE_AND_API_INIT(mcux_wdog, DT_INST_LABEL(0),
&mcux_wdog_init,
&mcux_wdog_data, &mcux_wdog_config,
POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&mcux_wdog_api);
static void mcux_wdog_config_func(const struct device *dev)
{
IRQ_CONNECT(DT_INST_IRQN(0),
DT_INST_IRQ(0, priority),
mcux_wdog_isr, DEVICE_GET(mcux_wdog), 0);
irq_enable(DT_INST_IRQN(0));
}