2  * Copyright 2022-2024 NXP
4  * SPDX-License-Identifier: Apache-2.0
45 /* Timeout */
81 #define REG_READ(r)      sys_read32(config->base + (r))
82 #define REG_WRITE(r, v)  sys_write32((v), config->base + (r))
96 	uint32_t period;  member
115 	struct swt_nxp_s32_timeout timeout;  member
120 	switch (config->lock_mode) {  in swt_lock()
139 		LOG_ERR("Watchdog hard-locked");  in swt_unlock()
140 		err = -EFAULT;  in swt_unlock()
150 			err = -ETIMEDOUT;  in swt_unlock()
161 	/* Calculated pseudo-random key according to Service Key Generation chapter in RM */  in swt_gen_service_key()
167 	const struct swt_nxp_s32_config *config = dev->config;  in swt_nxp_s32_setup()
168 	struct swt_nxp_s32_data *data = dev->data;  in swt_nxp_s32_setup()
172 	if (!data->timeout_valid) {  in swt_nxp_s32_setup()
174 		return -EINVAL;  in swt_nxp_s32_setup()
185 		  SWT_CR_WND(data->timeout.window_mode ? 1U : 0U) |  in swt_nxp_s32_setup()
186 		  SWT_CR_ITR(data->callback ? 1U : 0U) |  in swt_nxp_s32_setup()
191 	REG_WRITE(SWT_TO, SWT_TO_WTO(data->timeout.period));  in swt_nxp_s32_setup()
192 	REG_WRITE(SWT_WN, SWT_WN_WST(data->timeout.window_start));  in swt_nxp_s32_setup()
194 	if (config->service_mode == SWT_KEYED_SERVICE) {  in swt_nxp_s32_setup()
195 		REG_WRITE(SWT_SK, SWT_SK_SK(config->initial_key));  in swt_nxp_s32_setup()
206 	const struct swt_nxp_s32_config *config = dev->config;  in swt_nxp_s32_disable()
207 	struct swt_nxp_s32_data *data = dev->data;  in swt_nxp_s32_disable()
212 		return -EFAULT;  in swt_nxp_s32_disable()
226 	data->timeout_valid = false;  in swt_nxp_s32_disable()
234 	const struct swt_nxp_s32_config *config = dev->config;  in swt_nxp_s32_install_timeout()
235 	struct swt_nxp_s32_data *data = dev->data;  in swt_nxp_s32_install_timeout()
238 	uint32_t period;  in swt_nxp_s32_install_timeout()  local
242 	if (data->timeout_valid) {  in swt_nxp_s32_install_timeout()
244 		return -ENOMEM;  in swt_nxp_s32_install_timeout()
247 	err = clock_control_get_rate(config->clock_dev, config->clock_subsys, &clock_rate);  in swt_nxp_s32_install_timeout()
253 	period = clock_rate / 1000U * cfg->window.max;  in swt_nxp_s32_install_timeout()
255 	if (cfg->window.min) {  in swt_nxp_s32_install_timeout()
257 		window = clock_rate / 1000U * (cfg->window.max - cfg->window.min);  in swt_nxp_s32_install_timeout()
260 	if ((period < SWT_TO_WTO_MIN) || (period < window)) {  in swt_nxp_s32_install_timeout()
261 		LOG_ERR("Invalid timeout");  in swt_nxp_s32_install_timeout()
262 		return -EINVAL;  in swt_nxp_s32_install_timeout()
265 	data->timeout.period = period;  in swt_nxp_s32_install_timeout()
266 	data->timeout.window_start = window;  in swt_nxp_s32_install_timeout()
267 	data->timeout.window_mode = window_mode;  in swt_nxp_s32_install_timeout()
268 	data->callback = cfg->callback;  in swt_nxp_s32_install_timeout()
269 	data->timeout_valid = true;  in swt_nxp_s32_install_timeout()
270 	LOG_DBG("Installed timeout: period=%d, window=%d (%s)",  in swt_nxp_s32_install_timeout()
271 		period, window, window_mode ? "enabled" : "disabled");  in swt_nxp_s32_install_timeout()
278 	const struct swt_nxp_s32_config *config = dev->config;  in swt_nxp_s32_feed()
284 	switch (config->service_mode) {  in swt_nxp_s32_feed()
304 		if (match_unlock_seq && (config->lock_mode == SWT_SOFT_LOCK)) {  in swt_nxp_s32_feed()
315 		err = -EINVAL;  in swt_nxp_s32_feed()
326 	const struct swt_nxp_s32_config *config = dev->config;  in swt_nxp_s32_isr()
327 	struct swt_nxp_s32_data *data = dev->data;  in swt_nxp_s32_isr()
337 		if (data->callback) {  in swt_nxp_s32_isr()
339 			data->callback(dev, 0U);  in swt_nxp_s32_isr()
346 	const struct swt_nxp_s32_config *config = dev->config;  in swt_nxp_s32_init()
349 	if (!device_is_ready(config->clock_dev)) {  in swt_nxp_s32_init()
350 		return -ENODEV;  in swt_nxp_s32_init()
353 	err = clock_control_on(config->clock_dev, config->clock_subsys);  in swt_nxp_s32_init()
359 		  SWT_CR_MAP(config->master_access_mask) |  in swt_nxp_s32_init()
360 		  SWT_CR_RIA(config->reset_on_invalid_access) |  in swt_nxp_s32_init()
361 		  SWT_CR_SMD(config->service_mode));  in swt_nxp_s32_init()