88 static int dln2_gpio_pin_cmd(struct dln2_gpio *dln2, int cmd, unsigned pin)  in dln2_gpio_pin_cmd()  argument
94 	return dln2_transfer_tx(dln2->pdev, cmd, &req, sizeof(req));  in dln2_gpio_pin_cmd()
97 static int dln2_gpio_pin_val(struct dln2_gpio *dln2, int cmd, unsigned int pin)  in dln2_gpio_pin_val()  argument
106 	ret = dln2_transfer(dln2->pdev, cmd, &req, sizeof(req), &rsp, &len);  in dln2_gpio_pin_val()
115 static int dln2_gpio_pin_get_in_val(struct dln2_gpio *dln2, unsigned int pin)  in dln2_gpio_pin_get_in_val()  argument
119 	ret = dln2_gpio_pin_val(dln2, DLN2_GPIO_PIN_GET_VAL, pin);  in dln2_gpio_pin_get_in_val()
125 static int dln2_gpio_pin_get_out_val(struct dln2_gpio *dln2, unsigned int pin)  in dln2_gpio_pin_get_out_val()  argument
129 	ret = dln2_gpio_pin_val(dln2, DLN2_GPIO_PIN_GET_OUT_VAL, pin);  in dln2_gpio_pin_get_out_val()
135 static int dln2_gpio_pin_set_out_val(struct dln2_gpio *dln2,  in dln2_gpio_pin_set_out_val()  argument
143 	return dln2_transfer_tx(dln2->pdev, DLN2_GPIO_PIN_SET_OUT_VAL, &req,  in dln2_gpio_pin_set_out_val()
152 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_request()  local
160 	ret = dln2_gpio_pin_cmd(dln2, DLN2_GPIO_PIN_ENABLE, offset);  in dln2_gpio_request()
165 	ret = dln2_transfer(dln2->pdev, DLN2_GPIO_PIN_GET_DIRECTION,  in dln2_gpio_request()
176 		clear_bit(offset, dln2->output_enabled);  in dln2_gpio_request()
179 		set_bit(offset, dln2->output_enabled);  in dln2_gpio_request()
187 	dln2_gpio_pin_cmd(dln2, DLN2_GPIO_PIN_DISABLE, offset);  in dln2_gpio_request()
193 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_free()  local
195 	dln2_gpio_pin_cmd(dln2, DLN2_GPIO_PIN_DISABLE, offset);  in dln2_gpio_free()
200 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_get_direction()  local
202 	if (test_bit(offset, dln2->output_enabled))  in dln2_gpio_get_direction()
210 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_get()  local
218 		return dln2_gpio_pin_get_in_val(dln2, offset);  in dln2_gpio_get()
220 	return dln2_gpio_pin_get_out_val(dln2, offset);  in dln2_gpio_get()
225 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_set()  local
227 	dln2_gpio_pin_set_out_val(dln2, offset, value);  in dln2_gpio_set()
233 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_set_direction()  local
240 	ret = dln2_transfer_tx(dln2->pdev, DLN2_GPIO_PIN_SET_DIRECTION,  in dln2_gpio_set_direction()
246 		set_bit(offset, dln2->output_enabled);  in dln2_gpio_set_direction()
248 		clear_bit(offset, dln2->output_enabled);  in dln2_gpio_set_direction()
261 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_direction_output()  local
264 	ret = dln2_gpio_pin_set_out_val(dln2, offset, value);  in dln2_gpio_direction_output()
274 	struct dln2_gpio *dln2 = gpiochip_get_data(chip);  in dln2_gpio_set_config()  local
281 	return dln2_transfer_tx(dln2->pdev, DLN2_GPIO_SET_DEBOUNCE,  in dln2_gpio_set_config()
285 static int dln2_gpio_set_event_cfg(struct dln2_gpio *dln2, unsigned pin,  in dln2_gpio_set_event_cfg()  argument
298 	return dln2_transfer_tx(dln2->pdev, DLN2_GPIO_PIN_SET_EVENT_CFG,  in dln2_gpio_set_event_cfg()
305 	struct dln2_gpio *dln2 = gpiochip_get_data(gc);  in dln2_irq_unmask()  local
309 	set_bit(pin, dln2->unmasked_irqs);  in dln2_irq_unmask()
315 	struct dln2_gpio *dln2 = gpiochip_get_data(gc);  in dln2_irq_mask()  local
318 	clear_bit(pin, dln2->unmasked_irqs);  in dln2_irq_mask()
325 	struct dln2_gpio *dln2 = gpiochip_get_data(gc);  in dln2_irq_set_type()  local
330 		dln2->irq_type[pin] = DLN2_GPIO_EVENT_LVL_HIGH;  in dln2_irq_set_type()
333 		dln2->irq_type[pin] = DLN2_GPIO_EVENT_LVL_LOW;  in dln2_irq_set_type()
336 		dln2->irq_type[pin] = DLN2_GPIO_EVENT_CHANGE;  in dln2_irq_set_type()
339 		dln2->irq_type[pin] = DLN2_GPIO_EVENT_CHANGE_RISING;  in dln2_irq_set_type()
342 		dln2->irq_type[pin] = DLN2_GPIO_EVENT_CHANGE_FALLING;  in dln2_irq_set_type()
354 	struct dln2_gpio *dln2 = gpiochip_get_data(gc);  in dln2_irq_bus_lock()  local
356 	mutex_lock(&dln2->irq_lock);  in dln2_irq_bus_lock()
362 	struct dln2_gpio *dln2 = gpiochip_get_data(gc);  in dln2_irq_bus_unlock()  local
368 	enabled = test_bit(pin, dln2->enabled_irqs);  in dln2_irq_bus_unlock()
369 	unmasked = test_bit(pin, dln2->unmasked_irqs);  in dln2_irq_bus_unlock()
373 			type = dln2->irq_type[pin] & DLN2_GPIO_EVENT_MASK;  in dln2_irq_bus_unlock()
374 			set_bit(pin, dln2->enabled_irqs);  in dln2_irq_bus_unlock()
377 			clear_bit(pin, dln2->enabled_irqs);  in dln2_irq_bus_unlock()
380 		ret = dln2_gpio_set_event_cfg(dln2, pin, type, 0);  in dln2_irq_bus_unlock()
382 			dev_err(dln2->gpio.parent, "failed to set event\n");  in dln2_irq_bus_unlock()
385 	mutex_unlock(&dln2->irq_lock);  in dln2_irq_bus_unlock()
410 	struct dln2_gpio *dln2 = platform_get_drvdata(pdev);  in dln2_gpio_event()  local
413 		dev_err(dln2->gpio.parent, "short event message\n");  in dln2_gpio_event()
418 	if (pin >= dln2->gpio.ngpio) {  in dln2_gpio_event()
419 		dev_err(dln2->gpio.parent, "out of bounds pin %d\n", pin);  in dln2_gpio_event()
423 	switch (dln2->irq_type[pin]) {  in dln2_gpio_event()
434 	ret = generic_handle_domain_irq(dln2->gpio.irq.domain, pin);  in dln2_gpio_event()
436 		dev_err(dln2->gpio.parent, "pin %d not mapped to IRQ\n", pin);  in dln2_gpio_event()
441 	struct dln2_gpio *dln2;  in dln2_gpio_probe()  local
457 	dln2 = devm_kzalloc(&pdev->dev, sizeof(*dln2), GFP_KERNEL);  in dln2_gpio_probe()
458 	if (!dln2)  in dln2_gpio_probe()
461 	mutex_init(&dln2->irq_lock);  in dln2_gpio_probe()
463 	dln2->pdev = pdev;  in dln2_gpio_probe()
465 	dln2->gpio.label = "dln2";  in dln2_gpio_probe()
466 	dln2->gpio.parent = dev;  in dln2_gpio_probe()
467 	dln2->gpio.owner = THIS_MODULE;  in dln2_gpio_probe()
468 	dln2->gpio.base = -1;  in dln2_gpio_probe()
469 	dln2->gpio.ngpio = pins;  in dln2_gpio_probe()
470 	dln2->gpio.can_sleep = true;  in dln2_gpio_probe()
471 	dln2->gpio.set = dln2_gpio_set;  in dln2_gpio_probe()
472 	dln2->gpio.get = dln2_gpio_get;  in dln2_gpio_probe()
473 	dln2->gpio.request = dln2_gpio_request;  in dln2_gpio_probe()
474 	dln2->gpio.free = dln2_gpio_free;  in dln2_gpio_probe()
475 	dln2->gpio.get_direction = dln2_gpio_get_direction;  in dln2_gpio_probe()
476 	dln2->gpio.direction_input = dln2_gpio_direction_input;  in dln2_gpio_probe()
477 	dln2->gpio.direction_output = dln2_gpio_direction_output;  in dln2_gpio_probe()
478 	dln2->gpio.set_config = dln2_gpio_set_config;  in dln2_gpio_probe()
480 	girq = &dln2->gpio.irq;  in dln2_gpio_probe()
489 	platform_set_drvdata(pdev, dln2);  in dln2_gpio_probe()
491 	ret = devm_gpiochip_add_data(dev, &dln2->gpio, dln2);  in dln2_gpio_probe()