diff options
Diffstat (limited to 'drivers/pinctrl/intel/pinctrl-intel.c')
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-intel.c | 37 |
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, |