4  * SPDX-License-Identifier: Apache-2.0
12 #include <zephyr/dt-bindings/interrupt-controller/infineon-xmc4xxx-intc.h>
24 /* unset on a negative edge (or vice-versa depending on the configuration). The value of */
29 /* dts/arm/infineon/xmc4xxx_x_x-intc.dtsi. The configurations are stored in the opaque array */
31 /* dt-bindings/interrupt-controller/infineon-xmc4xxx-intc.h. */
34 	/* if fn is NULL it implies the interrupt line has not been allocated */
60 	struct intc_xmc4xxx_data *data = dev->data;  in intc_xmc4xxx_gpio_enable_interrupt()
61 	const struct intc_xmc4xxx_config *config = dev->config;  in intc_xmc4xxx_gpio_enable_interrupt()
62 	int ret = -ENOTSUP;  in intc_xmc4xxx_gpio_enable_interrupt()
69 		int port_map, pin_map, line, eru_src, eru_ch;  in intc_xmc4xxx_gpio_enable_interrupt()  local
79 		line = XMC4XXX_INTC_GET_LINE(port_line_mapping[i]);  in intc_xmc4xxx_gpio_enable_interrupt()
80 		cb = &data->cb[line];  in intc_xmc4xxx_gpio_enable_interrupt()
81 		if (cb->fn) {  in intc_xmc4xxx_gpio_enable_interrupt()
82 			/* It's already used. Continue search for available line */  in intc_xmc4xxx_gpio_enable_interrupt()
84 			ret = -EBUSY;  in intc_xmc4xxx_gpio_enable_interrupt()
89 		eru_ch  = line & 0x3;  in intc_xmc4xxx_gpio_enable_interrupt()
98 			return -EINVAL;  in intc_xmc4xxx_gpio_enable_interrupt()
101 		cb->port_id = port_id;  in intc_xmc4xxx_gpio_enable_interrupt()
102 		cb->pin = pin;  in intc_xmc4xxx_gpio_enable_interrupt()
103 		cb->mode = mode;  in intc_xmc4xxx_gpio_enable_interrupt()
104 		cb->fn = fn;  in intc_xmc4xxx_gpio_enable_interrupt()
105 		cb->data = user_data;  in intc_xmc4xxx_gpio_enable_interrupt()
116 		eru = config->eru_regs[line >> 2];  in intc_xmc4xxx_gpio_enable_interrupt()
133 				eru->EXICON_b[eru_ch].FL = 1;  in intc_xmc4xxx_gpio_enable_interrupt()
135 				*(uint32_t *)(NVIC_ISPR_BASE) |= BIT(line + 1);  in intc_xmc4xxx_gpio_enable_interrupt()
147 	const struct intc_xmc4xxx_config *config = dev->config;  in intc_xmc4xxx_gpio_disable_interrupt()
148 	struct intc_xmc4xxx_data *data = dev->data;  in intc_xmc4xxx_gpio_disable_interrupt()
151 	for (int line = 0; line < ARRAY_SIZE(data->cb); line++) {  in intc_xmc4xxx_gpio_disable_interrupt()  local
154 		cb = &data->cb[line];  in intc_xmc4xxx_gpio_disable_interrupt()
155 		eru_ch = line & 0x3;  in intc_xmc4xxx_gpio_disable_interrupt()
156 		if (cb->fn && cb->port_id == port_id && cb->pin == pin) {  in intc_xmc4xxx_gpio_disable_interrupt()
157 			XMC_ERU_t *eru = config->eru_regs[line >> 2];  in intc_xmc4xxx_gpio_disable_interrupt()
159 			cb->fn = NULL;  in intc_xmc4xxx_gpio_disable_interrupt()
161 			eru->EXICON_b[eru_ch].PE = 0;  in intc_xmc4xxx_gpio_disable_interrupt()
163 			eru->EXICON_b[eru_ch].FL = 0;  in intc_xmc4xxx_gpio_disable_interrupt()
168 	return -EINVAL;  in intc_xmc4xxx_gpio_disable_interrupt()
173 	int line = (int)arg;  in intc_xmc4xxx_isr()  local
175 	struct intc_xmc4xxx_data *data = dev->data;  in intc_xmc4xxx_isr()
176 	const struct intc_xmc4xxx_config *config = dev->config;  in intc_xmc4xxx_isr()
177 	struct isr_cb *cb = &data->cb[line];  in intc_xmc4xxx_isr()
178 	XMC_ERU_t *eru = config->eru_regs[line >> 2];  in intc_xmc4xxx_isr()
179 	int eru_ch = line & 0x3;  in intc_xmc4xxx_isr()
181 	/* The callback function may actually disable the interrupt and set cb->fn = NULL */  in intc_xmc4xxx_isr()
184 	/* in the same callback which could potentially set cb->fn again. */  in intc_xmc4xxx_isr()
185 	while (cb->fn) {  in intc_xmc4xxx_isr()
186 		cb->fn(cb->data, cb->pin);  in intc_xmc4xxx_isr()
188 		if (cb->mode == GPIO_INT_MODE_LEVEL && eru->EXICON_b[eru_ch].FL == 1) {  in intc_xmc4xxx_isr()
196 #define INTC_IRQ_CONNECT_ENABLE(name, line_number)                                                \  argument
197 	COND_CODE_1(DT_INST_IRQ_HAS_NAME(0, name),                                                \
198 	(IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, name, irq),                                           \
199 		DT_INST_IRQ_BY_NAME(0, name, priority), intc_xmc4xxx_isr, (void *)line_number, 0); \
200 		irq_enable(DT_INST_IRQ_BY_NAME(0, name, irq));), ())
204 	/* connect irqs only if they defined by name in the dts */  in intc_xmc4xxx_init()