2  * Copyright (c) 2016 Open-RnD Sp. z o.o.
4  * Copyright (c) 2019-23 Linaro Limited
6  * SPDX-License-Identifier: Apache-2.0
23 #include <zephyr/dt-bindings/pinctrl/stm32-pinctrl-common.h> /* For STM32L0 series */
30 /** @brief EXTI lines range mapped to a single interrupt line */
32 	/** Start of the range */
33 	uint8_t start;  member
40 static IRQn_Type exti_irq_table[NUM_EXTI_LINES] = {[0 ... NUM_EXTI_LINES - 1] = 0xFF};
50 	/* per-line callbacks */
66 	/* Gives the LL_SBS_EXTI_LINEn corresponding to the line number */  in stm32_exti_linenum_to_src_cfg_line()
74  * @brief Checks interrupt pending bit for specified EXTI line
76  * @param line EXTI line number
78 static inline int stm32_exti_is_pending(stm32_gpio_irq_line_t line)  in stm32_exti_is_pending()  argument
81 	return (LL_EXTI_IsActiveRisingFlag_0_31(line) ||  in stm32_exti_is_pending()
82 		LL_EXTI_IsActiveFallingFlag_0_31(line));  in stm32_exti_is_pending()
84 	return LL_C2_EXTI_IsActiveFlag_0_31(line);  in stm32_exti_is_pending()
86 	return LL_EXTI_IsActiveFlag_0_31(line);  in stm32_exti_is_pending()
91  * @brief Clears interrupt pending bit for specified EXTI line
93  * @param line EXTI line number
95 static inline void stm32_exti_clear_pending(stm32_gpio_irq_line_t line)  in stm32_exti_clear_pending()  argument
98 	LL_EXTI_ClearRisingFlag_0_31(line);  in stm32_exti_clear_pending()
99 	LL_EXTI_ClearFallingFlag_0_31(line);  in stm32_exti_clear_pending()
101 	LL_C2_EXTI_ClearFlag_0_31(line);  in stm32_exti_clear_pending()
103 	LL_EXTI_ClearFlag_0_31(line);  in stm32_exti_clear_pending()
108  * @returns the LL_EXTI_LINE_n define for EXTI line number @p linenum
116  * @returns EXTI line number for LL_EXTI_LINE_n define
118 static inline gpio_pin_t ll_exti_line_to_linenum(stm32_gpio_irq_line_t line)  in ll_exti_line_to_linenum()  argument
120 	return LOG2(line);  in ll_exti_line_to_linenum()
133 	struct stm32_exti_data *data = dev->data;  in stm32_exti_isr()
135 	stm32_gpio_irq_line_t line;  in stm32_exti_isr()  local
139 	for (uint8_t i = 0; i <= range->len; i++) {  in stm32_exti_isr()
140 		line_num = range->start + i;  in stm32_exti_isr()
141 		line = linenum_to_ll_exti_line(line_num);  in stm32_exti_isr()
144 		if (stm32_exti_is_pending(line) != 0) {  in stm32_exti_isr()
146 			stm32_exti_clear_pending(line);  in stm32_exti_isr()
149 			if (!data->cb[line_num].cb) {  in stm32_exti_isr()
153 			/* `line` can be passed as-is because LL_EXTI_LINE_n is (1 << n) */  in stm32_exti_isr()
154 			data->cb[line_num].cb(line, data->cb[line_num].data);  in stm32_exti_isr()
192 static void stm32_fill_irq_table(int8_t start, int8_t len, int32_t irqn)  in stm32_fill_irq_table()  argument
195 		exti_irq_table[start + i] = irqn;  in stm32_fill_irq_table()
200  * - populates line_range_x from line_range dt property
201  * - fill exti_irq_table through stm32_fill_irq_table()
202  * - calls IRQ_CONNECT for each interrupt and matching line_range
209 	stm32_fill_irq_table(line_range_##idx.start,				\
258 void stm32_gpio_intc_enable_line(stm32_gpio_irq_line_t line)  in stm32_gpio_intc_enable_line()  argument
261 	uint32_t line_num = ll_exti_line_to_linenum(line);  in stm32_gpio_intc_enable_line()
265 	/* Get matching exti irq provided line thanks to irq_table */  in stm32_gpio_intc_enable_line()
269 	/* Enable requested line interrupt */  in stm32_gpio_intc_enable_line()
271 	LL_C2_EXTI_EnableIT_0_31(line);  in stm32_gpio_intc_enable_line()
273 	LL_EXTI_EnableIT_0_31(line);  in stm32_gpio_intc_enable_line()
280 void stm32_gpio_intc_disable_line(stm32_gpio_irq_line_t line)  in stm32_gpio_intc_disable_line()  argument
283 	LL_C2_EXTI_DisableIT_0_31(line);  in stm32_gpio_intc_disable_line()
285 	LL_EXTI_DisableIT_0_31(line);  in stm32_gpio_intc_disable_line()
289 void stm32_gpio_intc_select_line_trigger(stm32_gpio_irq_line_t line, uint32_t trg)  in stm32_gpio_intc_select_line_trigger()  argument
295 		LL_EXTI_DisableRisingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
296 		LL_EXTI_DisableFallingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
299 		LL_EXTI_EnableRisingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
300 		LL_EXTI_DisableFallingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
303 		LL_EXTI_EnableFallingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
304 		LL_EXTI_DisableRisingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
307 		LL_EXTI_EnableRisingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
308 		LL_EXTI_EnableFallingTrig_0_31(line);  in stm32_gpio_intc_select_line_trigger()
317 int stm32_gpio_intc_set_irq_callback(stm32_gpio_irq_line_t line, stm32_gpio_irq_cb_t cb, void *user)  in stm32_gpio_intc_set_irq_callback()  argument
320 	struct stm32_exti_data *data = dev->data;  in stm32_gpio_intc_set_irq_callback()
321 	uint32_t line_num = ll_exti_line_to_linenum(line);  in stm32_gpio_intc_set_irq_callback()
323 	if ((data->cb[line_num].cb == cb) && (data->cb[line_num].data == user)) {  in stm32_gpio_intc_set_irq_callback()
327 	/* if callback already exists/maybe-running return busy */  in stm32_gpio_intc_set_irq_callback()
328 	if (data->cb[line_num].cb != NULL) {  in stm32_gpio_intc_set_irq_callback()
329 		return -EBUSY;  in stm32_gpio_intc_set_irq_callback()
332 	data->cb[line_num].cb = cb;  in stm32_gpio_intc_set_irq_callback()
333 	data->cb[line_num].data = user;  in stm32_gpio_intc_set_irq_callback()
338 void stm32_gpio_intc_remove_irq_callback(stm32_gpio_irq_line_t line)  in stm32_gpio_intc_remove_irq_callback()  argument
341 	struct stm32_exti_data *data = dev->data;  in stm32_gpio_intc_remove_irq_callback()
342 	uint32_t line_num = ll_exti_line_to_linenum(line);  in stm32_gpio_intc_remove_irq_callback()
344 	data->cb[line_num].cb = NULL;  in stm32_gpio_intc_remove_irq_callback()
345 	data->cb[line_num].data = NULL;  in stm32_gpio_intc_remove_irq_callback()
348 void stm32_exti_set_line_src_port(gpio_pin_t line, uint32_t port)  in stm32_exti_set_line_src_port()  argument
350 	uint32_t ll_line = stm32_exti_linenum_to_src_cfg_line(line);  in stm32_exti_set_line_src_port()
378 uint32_t stm32_exti_get_line_src_port(gpio_pin_t line)  in stm32_exti_get_line_src_port()  argument
380 	uint32_t ll_line = stm32_exti_linenum_to_src_cfg_line(line);  in stm32_exti_get_line_src_port()