1 // SPDX-License-Identifier: GPL-2.0
7  * Loosely based on android x86 kernel code which is:
13  * Some peripherals on Bay Trail and Cherry Trail platforms signal a Power
16  * bit in the GPE0a_STS register to avoid an IRQ storm on IRQ 9.
26  * controller, letting gpiolib-acpi.c call the _L02 handler as it would
42 #include <asm/intel-family.h>
59 static int int0002_gpio_get(struct gpio_chip *chip, unsigned int offset)  in int0002_gpio_get()  argument
64 static void int0002_gpio_set(struct gpio_chip *chip, unsigned int offset,  in int0002_gpio_set()  argument
69 static int int0002_gpio_direction_output(struct gpio_chip *chip,  in int0002_gpio_direction_output()  argument
98 static int int0002_irq_set_wake(struct irq_data *data, unsigned int on)  in int0002_irq_set_wake()  argument
100 	struct gpio_chip *chip = irq_data_get_irq_chip_data(data);  in int0002_irq_set_wake()  local
101 	struct platform_device *pdev = to_platform_device(chip->parent);  in int0002_irq_set_wake()
105 	if (on)  in int0002_irq_set_wake()
115 	struct gpio_chip *chip = data;  in int0002_irq()  local
122 	generic_handle_irq(irq_find_mapping(chip->irq.domain,  in int0002_irq()
125 	pm_wakeup_hard_event(chip->parent);  in int0002_irq()
152 	 * No set_wake, on CHT the IRQ is typically shared with the ACPI SCI
164 static void int0002_init_irq_valid_mask(struct gpio_chip *chip,  in int0002_init_irq_valid_mask()  argument
173 	struct device *dev = &pdev->dev;  in int0002_probe()
175 	struct gpio_chip *chip;  in int0002_probe()  local
182 		return -ENODEV;  in int0002_probe()
188 	chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);  in int0002_probe()
189 	if (!chip)  in int0002_probe()
190 		return -ENOMEM;  in int0002_probe()
192 	chip->label = DRV_NAME;  in int0002_probe()
193 	chip->parent = dev;  in int0002_probe()
194 	chip->owner = THIS_MODULE;  in int0002_probe()
195 	chip->get = int0002_gpio_get;  in int0002_probe()
196 	chip->set = int0002_gpio_set;  in int0002_probe()
197 	chip->direction_input = int0002_gpio_get;  in int0002_probe()
198 	chip->direction_output = int0002_gpio_direction_output;  in int0002_probe()
199 	chip->base = -1;  in int0002_probe()
200 	chip->ngpio = GPE0A_PME_B0_VIRT_GPIO_PIN + 1;  in int0002_probe()
201 	chip->irq.init_valid_mask = int0002_init_irq_valid_mask;  in int0002_probe()
204 	 * We directly request the irq here instead of passing a flow-handler  in int0002_probe()
210 			       IRQF_SHARED, "INT0002", chip);  in int0002_probe()
216 	girq = &chip->irq;  in int0002_probe()
217 	girq->chip = (struct irq_chip *)cpu_id->driver_data;  in int0002_probe()
219 	girq->parent_handler = NULL;  in int0002_probe()
220 	girq->num_parents = 0;  in int0002_probe()
221 	girq->parents = NULL;  in int0002_probe()
222 	girq->default_type = IRQ_TYPE_NONE;  in int0002_probe()
223 	girq->handler = handle_edge_irq;  in int0002_probe()
225 	ret = devm_gpiochip_add_data(dev, chip, NULL);  in int0002_probe()
227 		dev_err(dev, "Error adding gpio chip: %d\n", ret);  in int0002_probe()
238 	device_init_wakeup(&pdev->dev, false);  in int0002_remove()