4  * SPDX-License-Identifier: Apache-2.0
12 #include <zephyr/drivers/gpio.h>
13 #include <zephyr/dt-bindings/gpio/gpio.h>
15 #include <zephyr/dt-bindings/pinctrl/mchp-xec-pinctrl.h>
19 #include <zephyr/drivers/gpio/gpio_utils.h>
23 LOG_MODULE_REGISTER(gpio, CONFIG_GPIO_LOG_LEVEL);
52 /* Each GPIO pin 32-bit control register located consecutively in memory */
55 	const struct gpio_xec_config *config = dev->config;  in pin_ctrl_addr()
57 	return config->pcr1_base + ((uintptr_t)pin * 4u);  in pin_ctrl_addr()
60 /* GPIO Parallel input is a single 32-bit register per bank of 32 pins */
63 	const struct gpio_xec_config *config = dev->config;  in pin_parin_addr()
65 	return config->parin_addr;  in pin_parin_addr()
68 /* GPIO Parallel output is a single 32-bit register per bank of 32 pins */
71 	const struct gpio_xec_config *config = dev->config;  in pin_parout_addr()
73 	return config->parout_addr;  in pin_parout_addr()
88  * NOTE: gpio_flags_t b[15:0] are defined in the dt-binding gpio header.
89  * b[31:16] are defined in the driver gpio header.
90  * Hardware only supports push-pull or open-drain.
96 		return -ENOTSUP;  in gpio_xec_validate_flags()
101 		return -ENOTSUP;  in gpio_xec_validate_flags()
105 		return -EINVAL;  in gpio_xec_validate_flags()
112  * Each GPIO pin has two 32-bit control registers. Control 1 configures pin
115  * register or from corresponding bits in the GPIO parallel input/output registers.
117  * The GPIO hardware restricts the pin output state to Control 1 or the parallel bit.
126 	const struct gpio_xec_config *config = dev->config;  in gpio_xec_configure()
134 	if (!(valid_ctrl_masks[config->port_num] & BIT(pin))) {  in gpio_xec_configure()
135 		return -EINVAL;  in gpio_xec_configure()
147 	/* Check if pin is in GPIO mode */  in gpio_xec_configure()
149 		LOG_WRN("Port:%d pin:0x%x not in GPIO mode. CTRL[%x]=%x", config->port_num, pin,  in gpio_xec_configure()
210 	 /* Control output bit becomes read-only and parallel out register bit becomes r/w */  in gpio_xec_configure()
220 		return -EINVAL;  in gen_gpio_ctrl_icfg()
244 				return -EINVAL;  in gen_gpio_ctrl_icfg()
266 	const struct gpio_xec_config *config = dev->config;  in gpio_xec_pin_interrupt_configure()
272 	if ((valid_ctrl_masks[config->port_num] & BIT(pin)) == 0U) {  in gpio_xec_pin_interrupt_configure()
273 		return -EINVAL;  in gpio_xec_pin_interrupt_configure()
276 	/* Check if GPIO port supports interrupts */  in gpio_xec_pin_interrupt_configure()
278 	    ((config->flags & GPIO_INT_ENABLE) == 0)) {  in gpio_xec_pin_interrupt_configure()
279 		return -ENOTSUP;  in gpio_xec_pin_interrupt_configure()
284 		return -EINVAL;  in gpio_xec_pin_interrupt_configure()
288 	mchp_soc_ecia_girq_src_dis(config->girq_id, pin);  in gpio_xec_pin_interrupt_configure()
296 		gpio_xec_intr_en(pin, mode, config->girq_id);  in gpio_xec_pin_interrupt_configure()
326 	mchp_soc_ecia_girq_src_clr(config->girq_id, pin);  in gpio_xec_pin_interrupt_configure()
328 	gpio_xec_intr_en(pin, mode, config->girq_id);  in gpio_xec_pin_interrupt_configure()
384 	struct gpio_xec_data *data = dev->data;  in gpio_xec_manage_callback()
386 	gpio_manage_callback(&data->callbacks, callback, set);  in gpio_xec_manage_callback()
396 		return -EINVAL;  in gpio_xec_get_direction()
399 	const struct gpio_xec_config *config = port->config;  in gpio_xec_get_direction()
400 	uint32_t valid_msk = valid_ctrl_masks[config->port_num];  in gpio_xec_get_direction()
432 		return -EINVAL;  in gpio_xec_get_config()
435 	const struct gpio_xec_config *config = port->config;  in gpio_xec_get_config()
436 	uint32_t valid_msk = valid_ctrl_masks[config->port_num];  in gpio_xec_get_config()
439 		return -EINVAL;  in gpio_xec_get_config()
474 	const struct gpio_xec_config *config = dev->config;  in gpio_gpio_xec_port_isr()
475 	struct gpio_xec_data *data = dev->data;  in gpio_gpio_xec_port_isr()
482 	girq_result = mchp_soc_ecia_girq_result(config->girq_id);  in gpio_gpio_xec_port_isr()
485 	mchp_soc_ecia_girq_src_clr_bitmap(config->girq_id, girq_result);  in gpio_gpio_xec_port_isr()
487 	gpio_fire_callbacks(&data->callbacks, dev, girq_result);  in gpio_gpio_xec_port_isr()
490 /* GPIO driver official API table */
491 static DEVICE_API(gpio, gpio_xec_driver_api) = {
508 #define XEC_GPIO_PORT_FLAGS(n)						\  argument
509 	((DT_INST_IRQ_HAS_CELL(n, irq)) ? GPIO_INT_ENABLE : 0)
511 #define XEC_GPIO_PORT(n)						\  argument
512 	static int gpio_xec_port_init_##n(const struct device *dev)	\
514 		if (!(DT_INST_IRQ_HAS_CELL(n, irq))) {			\
518 		const struct gpio_xec_config *config = dev->config;	\
520 		mchp_soc_ecia_girq_aggr_en(config->girq_id, 1);		\
522 		IRQ_CONNECT(DT_INST_IRQN(n),				\
523 			    DT_INST_IRQ(n, priority),			\
525 			    DEVICE_DT_INST_GET(n), 0U);			\
527 		irq_enable(DT_INST_IRQN(n));				\
532 	static struct gpio_xec_data gpio_xec_port_data_##n;		\
534 	static const struct gpio_xec_config xec_gpio_config_##n = {	\
537 				GPIO_PORT_PIN_MASK_FROM_DT_INST(n),	\
539 		.pcr1_base = (uintptr_t)DT_INST_REG_ADDR_BY_IDX(n, 0),	\
540 		.parin_addr = (uintptr_t)DT_INST_REG_ADDR_BY_IDX(n, 1),	\
541 		.parout_addr = (uintptr_t)DT_INST_REG_ADDR_BY_IDX(n, 2),\
542 		.port_num = DT_INST_PROP(n, port_id),			\
543 		.girq_id = DT_INST_PROP_OR(n, girq_id, 0),		\
544 		.flags = XEC_GPIO_PORT_FLAGS(n),			\
547 	DEVICE_DT_INST_DEFINE(n, gpio_xec_port_init_##n, NULL,		\
548 		&gpio_xec_port_data_##n, &xec_gpio_config_##n,		\