4  * SPDX-License-Identifier: Apache-2.0
13 #include <zephyr/dt-bindings/gpio/snps-designware-gpio.h>
29 static int gpio_dw_port_set_bits_raw(const struct device *port, uint32_t mask);
30 static int gpio_dw_port_clear_bits_raw(const struct device *port,
34  * ARC architecture configure IP through IO auxiliary registers.
88 	uint32_t port = (base_addr & 0x3f) / 12U;  in dw_derive_port_from_base()  local
89 	return port;  in dw_derive_port_from_base()
94 	return ((int)(config->irq_num) > 0U);  in dw_interrupt_support()
101 	/* 4-port GPIO implementation translates from base address to port */  in dw_get_ext_port()
125 	/* 4-port GPIO implementation translates from base address to port */  in dw_get_data_port()
149 	/* 4-port GPIO implementation translates from base address to port */  in dw_get_dir_port()
169 static int gpio_dw_pin_interrupt_configure(const struct device *port,  in gpio_dw_pin_interrupt_configure()  argument
174 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_pin_interrupt_configure()
175 	const struct gpio_dw_config *config = port->config;  in gpio_dw_pin_interrupt_configure()
176 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_pin_interrupt_configure()
177 	uint32_t port_base_addr = context->base_addr;  in gpio_dw_pin_interrupt_configure()
183 	if (pin >= config->ngpios) {  in gpio_dw_pin_interrupt_configure()
184 		return -EINVAL;  in gpio_dw_pin_interrupt_configure()
187 	/* Only PORT-A supports interrupts */  in gpio_dw_pin_interrupt_configure()
189 		return -ENOTSUP;  in gpio_dw_pin_interrupt_configure()
193 		/* Check if GPIO port supports interrupts */  in gpio_dw_pin_interrupt_configure()
195 			return -ENOTSUP;  in gpio_dw_pin_interrupt_configure()
201 			return -EINVAL;  in gpio_dw_pin_interrupt_configure()
208 		return -ENOTSUP;  in gpio_dw_pin_interrupt_configure()
223 		/* Active low/high */  in gpio_dw_pin_interrupt_configure()
235 static inline void dw_pin_config(const struct device *port,  in dw_pin_config()  argument
238 	struct gpio_dw_runtime *context = port->data;  in dw_pin_config()
239 	const struct gpio_dw_config *config = port->config;  in dw_pin_config()
240 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in dw_pin_config()
241 	uint32_t port_base_addr = context->base_addr;  in dw_pin_config()
252 			gpio_dw_port_set_bits_raw(port, BIT(pin));  in dw_pin_config()
254 			gpio_dw_port_clear_bits_raw(port, BIT(pin));  in dw_pin_config()
258 	/* Use built-in debounce.  in dw_pin_config()
268 static inline int gpio_dw_config(const struct device *port,  in gpio_dw_config()  argument
272 	const struct gpio_dw_config *config = port->config;  in gpio_dw_config()
276 	if (pin >= config->ngpios) {  in gpio_dw_config()
277 		return -EINVAL;  in gpio_dw_config()
286 		return -ENOTSUP;  in gpio_dw_config()
289 	/* No open-drain support */  in gpio_dw_config()
291 		return -ENOTSUP;  in gpio_dw_config()
294 	/* Does not support pull-up/pull-down */  in gpio_dw_config()
296 		return -ENOTSUP;  in gpio_dw_config()
299 	dw_pin_config(port, pin, flags);  in gpio_dw_config()
304 static int gpio_dw_port_get_raw(const struct device *port, uint32_t *value)  in gpio_dw_port_get_raw()  argument
306 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_port_get_raw()
307 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_port_get_raw()
308 	uint32_t port_base_addr = context->base_addr;  in gpio_dw_port_get_raw()
316 static int gpio_dw_port_set_masked_raw(const struct device *port,  in gpio_dw_port_set_masked_raw()  argument
319 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_port_set_masked_raw()
320 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_port_set_masked_raw()
321 	uint32_t port_base_addr = context->base_addr;  in gpio_dw_port_set_masked_raw()
332 static int gpio_dw_port_set_bits_raw(const struct device *port, uint32_t mask)  in gpio_dw_port_set_bits_raw()  argument
334 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_port_set_bits_raw()
335 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_port_set_bits_raw()
336 	uint32_t port_base_addr = context->base_addr;  in gpio_dw_port_set_bits_raw()
347 static int gpio_dw_port_clear_bits_raw(const struct device *port,  in gpio_dw_port_clear_bits_raw()  argument
350 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_port_clear_bits_raw()
351 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_port_clear_bits_raw()
352 	uint32_t port_base_addr = context->base_addr;  in gpio_dw_port_clear_bits_raw()
363 static int gpio_dw_port_toggle_bits(const struct device *port, uint32_t mask)  in gpio_dw_port_toggle_bits()  argument
365 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_port_toggle_bits()
366 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_port_toggle_bits()
367 	uint32_t port_base_addr = context->base_addr;  in gpio_dw_port_toggle_bits()
378 static inline int gpio_dw_manage_callback(const struct device *port,  in gpio_dw_manage_callback()  argument
382 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_manage_callback()
384 	return gpio_manage_callback(&context->callbacks, callback, set);  in gpio_dw_manage_callback()
388 static void gpio_dw_isr(const struct device *port)  in gpio_dw_isr()  argument
390 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_isr()
391 	uint32_t base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_isr()
398 	gpio_fire_callbacks(&context->callbacks, port, int_status);  in gpio_dw_isr()
413 static int gpio_dw_initialize(const struct device *port)  in gpio_dw_initialize()  argument
415 	struct gpio_dw_runtime *context = port->data;  in gpio_dw_initialize()
416 	const struct gpio_dw_config *config = port->config;  in gpio_dw_initialize()
421 		base_addr = dw_base_to_block_base(context->base_addr);  in gpio_dw_initialize()
431 		config->config_func(port);  in gpio_dw_initialize()
448 	static void gpio_config_##n##_irq(const struct device *port)				\
450 		ARG_UNUSED(port);			                                        \