2  * Copyright (c) 2019-2021 Antmicro <www.antmicro.com>
5  * SPDX-License-Identifier: Apache-2.0
34 	"Cannot handle all of the gpios with the register of given size\n";
36 	"Cannot change port direction selected in device tree\n";
58 	((const struct gpio_litex_cfg *)(dev)->config)
67 	regv = litex_read(config->reg_addr, config->reg_size);  in set_bit()
69 	litex_write(config->reg_addr, config->reg_size, new_regv);  in set_bit()
74 	int regv = litex_read(config->reg_addr, config->reg_size);  in get_bit()
81 	litex_write(config->reg_addr, config->reg_size, value);  in set_port()
86 	int regv = litex_read(config->reg_addr, config->reg_size);  in get_port()
88 	return (regv & BIT_MASK(config->nr_gpios));  in get_port()
99 		return -ENOTSUP;  in gpio_litex_configure()
104 		return -ENOTSUP;  in gpio_litex_configure()
107 		return -ENOTSUP;  in gpio_litex_configure()
111 		if (!gpio_config->port_is_output) {  in gpio_litex_configure()
113 			return -EINVAL;  in gpio_litex_configure()
122 		if (gpio_config->port_is_output) {  in gpio_litex_configure()
124 			return -EINVAL;  in gpio_litex_configure()
196 	struct gpio_litex_data *data = dev->data;  in gpio_litex_irq_handler()
199 		litex_read(gpio_config->ev_pending_addr, gpio_config->reg_size);  in gpio_litex_irq_handler()
201 		litex_read(gpio_config->ev_enable_addr, gpio_config->reg_size);  in gpio_litex_irq_handler()
204 	litex_write(gpio_config->ev_pending_addr, gpio_config->reg_size,  in gpio_litex_irq_handler()
207 	gpio_fire_callbacks(&data->cb, dev, int_status & ev_enabled);  in gpio_litex_irq_handler()
213 	struct gpio_litex_data *data = dev->data;  in gpio_litex_manage_callback()
215 	return gpio_manage_callback(&data->cb, callback, set);  in gpio_litex_manage_callback()
221 					      enum gpio_int_trig trig)  in gpio_litex_pin_interrupt_configure()  argument
225 	if (gpio_config->port_is_output == true) {  in gpio_litex_pin_interrupt_configure()
226 		return -ENOTSUP;  in gpio_litex_pin_interrupt_configure()
230 		uint8_t ev_enabled = litex_read(gpio_config->ev_enable_addr,  in gpio_litex_pin_interrupt_configure()
231 				gpio_config->reg_size);  in gpio_litex_pin_interrupt_configure()
232 		uint8_t ev_mode = litex_read(gpio_config->ev_mode_addr,  in gpio_litex_pin_interrupt_configure()
233 				gpio_config->reg_size);  in gpio_litex_pin_interrupt_configure()
234 		uint8_t ev_edge = litex_read(gpio_config->ev_edge_addr,  in gpio_litex_pin_interrupt_configure()
235 				gpio_config->reg_size);  in gpio_litex_pin_interrupt_configure()
237 		litex_write(gpio_config->ev_enable_addr, gpio_config->reg_size,  in gpio_litex_pin_interrupt_configure()
240 		if (trig == GPIO_INT_TRIG_HIGH) {  in gpio_litex_pin_interrupt_configure()
242 			litex_write(gpio_config->ev_mode_addr, gpio_config->reg_size,  in gpio_litex_pin_interrupt_configure()
244 			litex_write(gpio_config->ev_edge_addr, gpio_config->reg_size,  in gpio_litex_pin_interrupt_configure()
246 		} else if (trig == GPIO_INT_TRIG_LOW) {  in gpio_litex_pin_interrupt_configure()
248 			litex_write(gpio_config->ev_mode_addr, gpio_config->reg_size,  in gpio_litex_pin_interrupt_configure()
250 			litex_write(gpio_config->ev_edge_addr, gpio_config->reg_size,  in gpio_litex_pin_interrupt_configure()
252 		} else if (trig == GPIO_INT_TRIG_BOTH) {  in gpio_litex_pin_interrupt_configure()
254 			litex_write(gpio_config->ev_mode_addr, gpio_config->reg_size,  in gpio_litex_pin_interrupt_configure()
261 		uint8_t ev_enabled = litex_read(gpio_config->ev_enable_addr,  in gpio_litex_pin_interrupt_configure()
262 				gpio_config->reg_size);  in gpio_litex_pin_interrupt_configure()
263 		litex_write(gpio_config->ev_enable_addr, gpio_config->reg_size,  in gpio_litex_pin_interrupt_configure()
268 	return -ENOTSUP;  in gpio_litex_pin_interrupt_configure()
277 	map &= gpio_config->port_pin_mask;  in gpio_litex_port_get_direction()
280 		*inputs = map & (!gpio_config->port_is_output);  in gpio_litex_port_get_direction()
284 		*outputs = map & (gpio_config->port_is_output);  in gpio_litex_port_get_direction()
346 		/* Check if gpios fit in declared register space */ \
347 		/* Number of subregisters times size in bits */ \
350 		if (gpio_config->nr_gpios > max_gpios_can_fit) { \
352 			return -EINVAL; \