44 	struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_direction_show()  local
49 	if (!test_bit(FLAG_EXPORT, &desc->flags)) {  in gpio_direction_show()
52 		gpiod_get_direction(desc);  in gpio_direction_show()
54 			test_bit(FLAG_IS_OUT, &desc->flags)  in gpio_direction_show()
65 	struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_direction_store()  local
70 	if (!test_bit(FLAG_EXPORT, &desc->flags))  in gpio_direction_store()
73 		status = gpiod_direction_output_raw(desc, 1);  in gpio_direction_store()
75 		status = gpiod_direction_output_raw(desc, 0);  in gpio_direction_store()
77 		status = gpiod_direction_input(desc);  in gpio_direction_store()
91 	struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_value_show()  local
96 	if (!test_bit(FLAG_EXPORT, &desc->flags))  in gpio_value_show()
99 		status = sprintf(buf, "%d\n", gpiod_get_value_cansleep(desc));  in gpio_value_show()
108 	struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_value_store()  local
113 	if (!test_bit(FLAG_EXPORT, &desc->flags))  in gpio_value_store()
115 	else if (!test_bit(FLAG_IS_OUT, &desc->flags))  in gpio_value_store()
122 			gpiod_set_value_cansleep(desc, value);  in gpio_value_store()
142 static int gpio_setup_irq(struct gpio_desc *desc, struct device *dev,  in gpio_setup_irq()  argument
149 	if ((desc->flags & GPIO_TRIGGER_MASK) == gpio_flags)  in gpio_setup_irq()
152 	irq = gpiod_to_irq(desc);  in gpio_setup_irq()
156 	id = desc->flags >> ID_SHIFT;  in gpio_setup_irq()
161 	desc->flags &= ~GPIO_TRIGGER_MASK;  in gpio_setup_irq()
164 		gpiochip_unlock_as_irq(desc->chip, gpio_chip_hwgpio(desc));  in gpio_setup_irq()
171 		irq_flags |= test_bit(FLAG_ACTIVE_LOW, &desc->flags) ?  in gpio_setup_irq()
174 		irq_flags |= test_bit(FLAG_ACTIVE_LOW, &desc->flags) ?  in gpio_setup_irq()
189 		desc->flags &= GPIO_FLAGS_MASK;  in gpio_setup_irq()
190 		desc->flags |= (unsigned long)id << ID_SHIFT;  in gpio_setup_irq()
192 		if (desc->flags >> ID_SHIFT != id) {  in gpio_setup_irq()
203 	ret = gpiochip_lock_as_irq(desc->chip, gpio_chip_hwgpio(desc));  in gpio_setup_irq()
205 		gpiod_warn(desc, "failed to flag the GPIO for IRQ\n");  in gpio_setup_irq()
209 	desc->flags |= gpio_flags;  in gpio_setup_irq()
214 	desc->flags &= GPIO_FLAGS_MASK;  in gpio_setup_irq()
235 	const struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_edge_show()  local
240 	if (!test_bit(FLAG_EXPORT, &desc->flags))  in gpio_edge_show()
247 			if ((desc->flags & GPIO_TRIGGER_MASK)  in gpio_edge_show()
262 	struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_edge_store()  local
274 	if (!test_bit(FLAG_EXPORT, &desc->flags))  in gpio_edge_store()
277 		status = gpio_setup_irq(desc, dev, trigger_types[i].flags);  in gpio_edge_store()
289 static int sysfs_set_active_low(struct gpio_desc *desc, struct device *dev,  in sysfs_set_active_low()  argument
294 	if (!!test_bit(FLAG_ACTIVE_LOW, &desc->flags) == !!value)  in sysfs_set_active_low()
298 		set_bit(FLAG_ACTIVE_LOW, &desc->flags);  in sysfs_set_active_low()
300 		clear_bit(FLAG_ACTIVE_LOW, &desc->flags);  in sysfs_set_active_low()
303 	if (dev != NULL && (!!test_bit(FLAG_TRIG_RISE, &desc->flags) ^  in sysfs_set_active_low()
304 				!!test_bit(FLAG_TRIG_FALL, &desc->flags))) {  in sysfs_set_active_low()
305 		unsigned long trigger_flags = desc->flags & GPIO_TRIGGER_MASK;  in sysfs_set_active_low()
307 		gpio_setup_irq(desc, dev, 0);  in sysfs_set_active_low()
308 		status = gpio_setup_irq(desc, dev, trigger_flags);  in sysfs_set_active_low()
317 	const struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_active_low_show()  local
322 	if (!test_bit(FLAG_EXPORT, &desc->flags))  in gpio_active_low_show()
326 				!!test_bit(FLAG_ACTIVE_LOW, &desc->flags));  in gpio_active_low_show()
336 	struct gpio_desc	*desc = dev_get_drvdata(dev);  in gpio_active_low_store()  local
341 	if (!test_bit(FLAG_EXPORT, &desc->flags)) {  in gpio_active_low_store()
348 			status = sysfs_set_active_low(desc, dev, value != 0);  in gpio_active_low_store()
363 	struct gpio_desc *desc = dev_get_drvdata(dev);  in gpio_is_visible()  local
365 	bool show_direction = test_bit(FLAG_SYSFS_DIR, &desc->flags);  in gpio_is_visible()
371 		if (gpiod_to_irq(desc) < 0)  in gpio_is_visible()
373 		if (!show_direction && test_bit(FLAG_IS_OUT, &desc->flags))  in gpio_is_visible()
451 	struct gpio_desc	*desc;  in export_store()  local
458 	desc = gpio_to_desc(gpio);  in export_store()
460 	if (!desc) {  in export_store()
470 	status = gpiod_request(desc, "sysfs");  in export_store()
476 	status = gpiod_export(desc, true);  in export_store()
478 		gpiod_free(desc);  in export_store()
480 		set_bit(FLAG_SYSFS, &desc->flags);  in export_store()
493 	struct gpio_desc	*desc;  in unexport_store()  local
500 	desc = gpio_to_desc(gpio);  in unexport_store()
502 	if (!desc) {  in unexport_store()
513 	if (test_and_clear_bit(FLAG_SYSFS, &desc->flags)) {  in unexport_store()
515 		gpiod_free(desc);  in unexport_store()
552 int gpiod_export(struct gpio_desc *desc, bool direction_may_change)  in gpiod_export()  argument
567 	if (!desc) {  in gpiod_export()
572 	chip = desc->chip;  in gpiod_export()
583 	if (!test_bit(FLAG_REQUESTED, &desc->flags) ||  in gpiod_export()
584 	     test_bit(FLAG_EXPORT, &desc->flags)) {  in gpiod_export()
586 		gpiod_dbg(desc, "%s: unavailable (requested=%d, exported=%d)\n",  in gpiod_export()
588 				test_bit(FLAG_REQUESTED, &desc->flags),  in gpiod_export()
589 				test_bit(FLAG_EXPORT, &desc->flags));  in gpiod_export()
594 	if (desc->chip->direction_input && desc->chip->direction_output &&  in gpiod_export()
596 		set_bit(FLAG_SYSFS_DIR, &desc->flags);  in gpiod_export()
601 	offset = gpio_chip_hwgpio(desc);  in gpiod_export()
602 	if (desc->chip->names && desc->chip->names[offset])  in gpiod_export()
603 		ioname = desc->chip->names[offset];  in gpiod_export()
605 	dev = device_create_with_groups(&gpio_class, desc->chip->dev,  in gpiod_export()
606 					MKDEV(0, 0), desc, gpio_groups,  in gpiod_export()
608 					desc_to_gpio(desc));  in gpiod_export()
614 	set_bit(FLAG_EXPORT, &desc->flags);  in gpiod_export()
620 	gpiod_dbg(desc, "%s: status %d\n", __func__, status);  in gpiod_export()
642 		      struct gpio_desc *desc)  in gpiod_export_link()  argument
646 	if (!desc) {  in gpiod_export_link()
653 	if (test_bit(FLAG_EXPORT, &desc->flags)) {  in gpiod_export_link()
656 		tdev = class_find_device(&gpio_class, NULL, desc, match_export);  in gpiod_export_link()
669 		gpiod_dbg(desc, "%s: status %d\n", __func__, status);  in gpiod_export_link()
687 int gpiod_sysfs_set_active_low(struct gpio_desc *desc, int value)  in gpiod_sysfs_set_active_low()  argument
692 	if (!desc) {  in gpiod_sysfs_set_active_low()
699 	if (test_bit(FLAG_EXPORT, &desc->flags)) {  in gpiod_sysfs_set_active_low()
700 		dev = class_find_device(&gpio_class, NULL, desc, match_export);  in gpiod_sysfs_set_active_low()
707 	status = sysfs_set_active_low(desc, dev, value);  in gpiod_sysfs_set_active_low()
713 		gpiod_dbg(desc, "%s: status %d\n", __func__, status);  in gpiod_sysfs_set_active_low()
725 void gpiod_unexport(struct gpio_desc *desc)  in gpiod_unexport()  argument
730 	if (!desc) {  in gpiod_unexport()
737 	if (test_bit(FLAG_EXPORT, &desc->flags)) {  in gpiod_unexport()
739 		dev = class_find_device(&gpio_class, NULL, desc, match_export);  in gpiod_unexport()
741 			gpio_setup_irq(desc, dev, 0);  in gpiod_unexport()
742 			clear_bit(FLAG_SYSFS_DIR, &desc->flags);  in gpiod_unexport()
743 			clear_bit(FLAG_EXPORT, &desc->flags);  in gpiod_unexport()
756 		gpiod_dbg(desc, "%s: status %d\n", __func__, status);  in gpiod_unexport()
795 	struct gpio_desc *desc;  in gpiochip_unexport()  local
815 		desc = &chip->desc[i];  in gpiochip_unexport()
816 		if (test_and_clear_bit(FLAG_SYSFS, &desc->flags))  in gpiochip_unexport()
817 			gpiod_free(desc);  in gpiochip_unexport()