[PATCH] gpio/rockchip: lock GPIOs used as interrupts

[John Keeping]

Use the standard gpiochip request/release resource functions so that any
GPIOs used as interrupts are properly locked.  This allows libgpiod to
correctly show these GPIOs as in-use.

Signed-off-by: John Keeping <john at metanate.com>
---
 drivers/gpio/gpio-rockchip.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index ce63cbd14d69a..c1b8e5dbbcc47 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -465,6 +465,22 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
 	return ret;
 }
 
+static int rockchip_irq_reqres(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct rockchip_pin_bank *bank = gc->private;
+
+	return gpiochip_reqres_irq(&bank->gpio_chip, d->hwirq);
+}
+
+static void rockchip_irq_relres(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct rockchip_pin_bank *bank = gc->private;
+
+	gpiochip_relres_irq(&bank->gpio_chip, d->hwirq);
+}
+
 static void rockchip_irq_suspend(struct irq_data *d)
 {
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
@@ -536,6 +552,8 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank)
 	gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend;
 	gc->chip_types[0].chip.irq_resume = rockchip_irq_resume;
 	gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type;
+	gc->chip_types[0].chip.irq_request_resources = rockchip_irq_reqres;
+	gc->chip_types[0].chip.irq_release_resources = rockchip_irq_relres;
 	gc->wake_enabled = IRQ_MSK(bank->nr_pins);
 
 	/*
-- 
2.34.1