5  * SPDX-License-Identifier: Apache-2.0
32 #define WDT_SYNCBUSY WDT_REGS->STATUS.bit.SYNCBUSY
34 #define WDT_SYNCBUSY WDT_REGS->SYNCBUSY.reg
54 	WDT_REGS->CTRLA.bit.ENABLE = on;  in wdt_sam0_set_enable()
56 	WDT_REGS->CTRL.bit.ENABLE = on;  in wdt_sam0_set_enable()
63 	return WDT_REGS->CTRLA.bit.ENABLE;  in wdt_sam0_is_enabled()
65 	return WDT_REGS->CTRL.bit.ENABLE;  in wdt_sam0_is_enabled()
83 	next_pow2 = (1ULL << 32) >> __builtin_clz(cycles - 1);  in wdt_sam0_timeout_to_wdt_period()
89 	struct wdt_sam0_dev_data *data = dev->data;  in wdt_sam0_isr()
91 	WDT_REGS->INTFLAG.reg = WDT_INTFLAG_EW;  in wdt_sam0_isr()
93 	if (data->cb != NULL) {  in wdt_sam0_isr()
94 		data->cb(dev, 0);  in wdt_sam0_isr()
100 	struct wdt_sam0_dev_data *data = dev->data;  in wdt_sam0_setup()
104 		return -EBUSY;  in wdt_sam0_setup()
107 	if (!data->timeout_valid) {  in wdt_sam0_setup()
109 		return -EINVAL;  in wdt_sam0_setup()
114 		return -ENOTSUP;  in wdt_sam0_setup()
119 		return -ENOTSUP;  in wdt_sam0_setup()
132 		return -EFAULT;  in wdt_sam0_disable()
144 	struct wdt_sam0_dev_data *data = dev->data;  in wdt_sam0_install_timeout()
145 	uint32_t window, per;  in wdt_sam0_install_timeout()  local
150 		return -EBUSY;  in wdt_sam0_install_timeout()
153 	if (cfg->flags != WDT_FLAG_RESET_SOC) {  in wdt_sam0_install_timeout()
155 		return -ENOTSUP;  in wdt_sam0_install_timeout()
158 	if (cfg->window.max == 0) {  in wdt_sam0_install_timeout()
160 		return -EINVAL;  in wdt_sam0_install_timeout()
163 	per = wdt_sam0_timeout_to_wdt_period(cfg->window.max);  in wdt_sam0_install_timeout()
164 	if (per > WDT_CONFIG_PER_16K_Val) {  in wdt_sam0_install_timeout()
169 	if (cfg->window.min) {  in wdt_sam0_install_timeout()
171 		window = wdt_sam0_timeout_to_wdt_period(cfg->window.min);  in wdt_sam0_install_timeout()
176 		if (per <= window) {  in wdt_sam0_install_timeout()
178 			per = window + 1;  in wdt_sam0_install_timeout()
181 		WDT_REGS->CTRLA.bit.WEN = 1;  in wdt_sam0_install_timeout()
183 		WDT_REGS->CTRL.bit.WEN = 1;  in wdt_sam0_install_timeout()
188 		if (cfg->callback) {  in wdt_sam0_install_timeout()
189 			if (per == WDT_CONFIG_PER_8_Val) {  in wdt_sam0_install_timeout()
191 				per += 1U;  in wdt_sam0_install_timeout()
193 			WDT_REGS->EWCTRL.bit.EWOFFSET = per - 1U;  in wdt_sam0_install_timeout()
197 		WDT_REGS->CTRLA.bit.WEN = 0;  in wdt_sam0_install_timeout()
199 		WDT_REGS->CTRL.bit.WEN = 0;  in wdt_sam0_install_timeout()
204 	WDT_REGS->CONFIG.reg = WDT_CONFIG_WINDOW(window) | WDT_CONFIG_PER(per);  in wdt_sam0_install_timeout()
208 	data->cb = cfg->callback;  in wdt_sam0_install_timeout()
209 	if (data->cb) {  in wdt_sam0_install_timeout()
210 		WDT_REGS->INTENSET.reg = WDT_INTENSET_EW;  in wdt_sam0_install_timeout()
212 		WDT_REGS->INTENCLR.reg = WDT_INTENCLR_EW;  in wdt_sam0_install_timeout()
213 		WDT_REGS->INTFLAG.reg = WDT_INTFLAG_EW;  in wdt_sam0_install_timeout()
216 	data->timeout_valid = true;  in wdt_sam0_install_timeout()
221 	data->timeout_valid = false;  in wdt_sam0_install_timeout()
222 	data->cb = NULL;  in wdt_sam0_install_timeout()
224 	return -EINVAL;  in wdt_sam0_install_timeout()
229 	struct wdt_sam0_dev_data *data = dev->data;  in wdt_sam0_feed()
231 	if (!data->timeout_valid) {  in wdt_sam0_feed()
233 		return -EINVAL;  in wdt_sam0_feed()
237 		return -EAGAIN;  in wdt_sam0_feed()
240 	WDT_REGS->CLEAR.reg = WDT_CLEAR_CLEAR_KEY_Val;  in wdt_sam0_feed()
260 	MCLK->APBAMASK.bit.WDT_ = 1;  in wdt_sam0_init()
264 	PM->APBAMASK.bit.WDT_ = 1;  in wdt_sam0_init()
267 	GCLK->CLKCTRL.reg = GCLK_CLKCTRL_ID_WDT  in wdt_sam0_init()