summaryrefslogtreecommitdiff
path: root/drivers/pinctrl/intel/pinctrl-intel.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pinctrl/intel/pinctrl-intel.c')
-rw-r--r--drivers/pinctrl/intel/pinctrl-intel.c37
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index 1e24a6b8a64e..62b009b27eda 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel pinctrl/GPIO core driver.
*
* Copyright (C) 2015, Intel Corporation
* Authors: Mathias Nyman <mathias.nyman@linux.intel.com>
* Mika Westerberg <mika.westerberg@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/module.h>
@@ -875,6 +872,36 @@ static int intel_gpio_to_pin(struct intel_pinctrl *pctrl, unsigned offset,
return -EINVAL;
}
+static int intel_gpio_irq_reqres(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct intel_pinctrl *pctrl = gpiochip_get_data(gc);
+ int pin;
+ int ret;
+
+ pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), NULL, NULL);
+ if (pin >= 0) {
+ ret = gpiochip_lock_as_irq(gc, pin);
+ if (ret) {
+ dev_err(pctrl->dev, "unable to lock HW IRQ %d for IRQ\n",
+ pin);
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static void intel_gpio_irq_relres(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+ struct intel_pinctrl *pctrl = gpiochip_get_data(gc);
+ int pin;
+
+ pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), NULL, NULL);
+ if (pin >= 0)
+ gpiochip_unlock_as_irq(gc, pin);
+}
+
static void intel_gpio_irq_ack(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
@@ -1090,6 +1117,8 @@ static irqreturn_t intel_gpio_irq(int irq, void *data)
static struct irq_chip intel_gpio_irqchip = {
.name = "intel-gpio",
+ .irq_request_resources = intel_gpio_irq_reqres,
+ .irq_release_resources = intel_gpio_irq_relres,
.irq_enable = intel_gpio_irq_enable,
.irq_ack = intel_gpio_irq_ack,
.irq_mask = intel_gpio_irq_mask,