10  * SPDX-License-Identifier: Apache-2.0
63 	const struct xilinx_wdt_axi_config *config = dev->config;  in wdt_xilinx_axi_setup()
64 	struct xilinx_wdt_axi_data *data = dev->data;  in wdt_xilinx_axi_setup()
65 	k_spinlock_key_t key = k_spin_lock(&data->lock);  in wdt_xilinx_axi_setup()
68 	if (!data->timeout_active) {  in wdt_xilinx_axi_setup()
69 		ret = -EINVAL;  in wdt_xilinx_axi_setup()
70 		goto out;  in wdt_xilinx_axi_setup()
73 	if (data->wdt_started) {  in wdt_xilinx_axi_setup()
74 		ret = -EBUSY;  in wdt_xilinx_axi_setup()
75 		goto out;  in wdt_xilinx_axi_setup()
82 	sys_write32(CSR0_EWDT1 | CSR0_WDS, config->base + REG_TWCSR0);  in wdt_xilinx_axi_setup()
83 	sys_write32(CSR1_EWDT2, config->base + REG_TWCSR1);  in wdt_xilinx_axi_setup()
84 	data->wdt_started = true;  in wdt_xilinx_axi_setup()
87 out:  in wdt_xilinx_axi_setup()
88 	k_spin_unlock(&data->lock, key);  in wdt_xilinx_axi_setup()
94 	const struct xilinx_wdt_axi_config *config = dev->config;  in wdt_xilinx_axi_disable()
95 	struct xilinx_wdt_axi_data *data = dev->data;  in wdt_xilinx_axi_disable()
96 	k_spinlock_key_t key = k_spin_lock(&data->lock);  in wdt_xilinx_axi_disable()
99 	if (config->enable_once) {  in wdt_xilinx_axi_disable()
100 		ret = -EPERM;  in wdt_xilinx_axi_disable()
101 		goto out;  in wdt_xilinx_axi_disable()
104 	if (!data->wdt_started) {  in wdt_xilinx_axi_disable()
105 		ret = -EFAULT;  in wdt_xilinx_axi_disable()
106 		goto out;  in wdt_xilinx_axi_disable()
109 	sys_write32(CSR0_WDS, config->base + REG_TWCSR0);  in wdt_xilinx_axi_disable()
110 	sys_write32(0, config->base + REG_TWCSR1);  in wdt_xilinx_axi_disable()
111 	data->wdt_started = false;  in wdt_xilinx_axi_disable()
114 out:  in wdt_xilinx_axi_disable()
115 	k_spin_unlock(&data->lock, key);  in wdt_xilinx_axi_disable()
122 	const struct xilinx_wdt_axi_config *config = dev->config;  in wdt_xilinx_axi_install_timeout()
123 	struct xilinx_wdt_axi_data *data = dev->data;  in wdt_xilinx_axi_install_timeout()
124 	k_spinlock_key_t key = k_spin_lock(&data->lock);  in wdt_xilinx_axi_install_timeout()
129 	if (data->timeout_active) {  in wdt_xilinx_axi_install_timeout()
130 		ret = -ENOMEM;  in wdt_xilinx_axi_install_timeout()
131 		goto out;  in wdt_xilinx_axi_install_timeout()
134 	if (!(cfg->flags & WDT_FLAG_RESET_SOC)) {  in wdt_xilinx_axi_install_timeout()
135 		ret = -ENOTSUP;  in wdt_xilinx_axi_install_timeout()
136 		goto out;  in wdt_xilinx_axi_install_timeout()
139 	if (cfg->window.min != 0) {  in wdt_xilinx_axi_install_timeout()
140 		ret = -EINVAL;  in wdt_xilinx_axi_install_timeout()
141 		goto out;  in wdt_xilinx_axi_install_timeout()
144 	for (timer_width = TIMER_WIDTH_MIN; timer_width <= config->timer_width_max; timer_width++) {  in wdt_xilinx_axi_install_timeout()
149 		const uint64_t expiry_msec = expiry_cycles * 1000 / config->clock_rate;  in wdt_xilinx_axi_install_timeout()
151 		if (expiry_msec >= cfg->window.max) {  in wdt_xilinx_axi_install_timeout()
160 		LOG_ERR("Cannot support timeout value of %u msec", cfg->window.max);  in wdt_xilinx_axi_install_timeout()
161 		ret = -EINVAL;  in wdt_xilinx_axi_install_timeout()
162 		goto out;  in wdt_xilinx_axi_install_timeout()
165 	sys_write32(timer_width, config->base + REG_MWR);  in wdt_xilinx_axi_install_timeout()
166 	data->timeout_active = true;  in wdt_xilinx_axi_install_timeout()
169 out:  in wdt_xilinx_axi_install_timeout()
170 	k_spin_unlock(&data->lock, key);  in wdt_xilinx_axi_install_timeout()
176 	const struct xilinx_wdt_axi_config *config = dev->config;  in wdt_xilinx_axi_feed()
177 	struct xilinx_wdt_axi_data *data = dev->data;  in wdt_xilinx_axi_feed()
178 	k_spinlock_key_t key = k_spin_lock(&data->lock);  in wdt_xilinx_axi_feed()
179 	uint32_t twcsr0 = sys_read32(config->base + REG_TWCSR0);  in wdt_xilinx_axi_feed()
182 	if (channel_id != 0 || !data->timeout_active) {  in wdt_xilinx_axi_feed()
183 		ret = -EINVAL;  in wdt_xilinx_axi_feed()
184 		goto out;  in wdt_xilinx_axi_feed()
188 	if (data->wdt_started) {  in wdt_xilinx_axi_feed()
192 	sys_write32(twcsr0, config->base + REG_TWCSR0);  in wdt_xilinx_axi_feed()
195 out:  in wdt_xilinx_axi_feed()
196 	k_spin_unlock(&data->lock, key);  in wdt_xilinx_axi_feed()
218 		return -ENOSYS;  in z_impl_hwinfo_get_reset_cause()
221 	const struct xilinx_wdt_axi_config *config = first_wdt_dev->config;  in z_impl_hwinfo_get_reset_cause()
223 	if ((sys_read32(config->base + REG_TWCSR0) & CSR0_WRS) != 0) {  in z_impl_hwinfo_get_reset_cause()
235 		return -ENOSYS;  in z_impl_hwinfo_clear_reset_cause()
238 	const struct xilinx_wdt_axi_config *config = first_wdt_dev->config;  in z_impl_hwinfo_clear_reset_cause()
239 	struct xilinx_wdt_axi_data *data = first_wdt_dev->data;  in z_impl_hwinfo_clear_reset_cause()
241 	k_spinlock_key_t key = k_spin_lock(&data->lock);  in z_impl_hwinfo_clear_reset_cause()
242 	uint32_t twcsr0 = sys_read32(config->base + REG_TWCSR0);  in z_impl_hwinfo_clear_reset_cause()
246 		sys_write32(twcsr0, config->base + REG_TWCSR0);  in z_impl_hwinfo_clear_reset_cause()
249 	k_spin_unlock(&data->lock, key);  in z_impl_hwinfo_clear_reset_cause()
257 		return -ENOSYS;  in z_impl_hwinfo_get_supported_reset_cause()