[PATCH v5 5/6] gpiolib: Reuse device's fwnode to create IRQ domain

Andy Shevchenko
2021-03-08T19:46:29Z

When IRQ domain is created for an ACPI case, the name of it becomes unknown-%d
since for now it utilizes of_node member only and doesn't consider fwnode case.
Convert IRQ domain creation code to utilize fwnode instead.

Before/After the change on Intel Galileo Gen 2 with two GPIO (IRQ) controllers:

unknown-1 ==> \_SB.PCI0.GIP0.GPO
unknown-2 ==> \_SB.NIO3

Due to the nature of this change we may also deduplicate the WARN():s
because in either case (DT or ACPI) the fwnode will be set correctly
and %pfw is an equivalent to what the current code prints as a prefix.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/gpio/gpiolib.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 1853075df741..afee48e7dd41 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1456,9 +1456,9 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc,
struct lock_class_key *lock_key,
struct lock_class_key *request_key)
{
+ struct fwnode_handle *fwnode = dev_fwnode(&gc->gpiodev->dev);
struct irq_chip *irqchip = gc->irq.chip;
const struct irq_domain_ops *ops = NULL;
- struct device_node *np;
unsigned int type;
unsigned int i;

@@ -1470,7 +1470,6 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc,
return -EINVAL;
}

- np = gc->gpiodev->dev.of_node;
type = gc->irq.default_type;

/*
@@ -1478,16 +1477,10 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc,
* used to configure the interrupts, as you may end up with
* conflicting triggers. Tell the user, and reset to NONE.
*/
- if (WARN(np && type != IRQ_TYPE_NONE,
- "%s: Ignoring %u default trigger\n", np->full_name, type))
+ if (WARN(fwnode && type != IRQ_TYPE_NONE,
+ "%pfw: Ignoring %u default trigger\n", fwnode, type))
type = IRQ_TYPE_NONE;

- if (has_acpi_companion(gc->parent) && type != IRQ_TYPE_NONE) {
- acpi_handle_warn(ACPI_HANDLE(gc->parent),
- "Ignoring %u default trigger\n", type);
- type = IRQ_TYPE_NONE;
- }
-
if (gc->to_irq)
chip_warn(gc, "to_irq is redefined in %s and you shouldn't rely on it\n", __func__);

@@ -1508,7 +1501,7 @@ static int gpiochip_add_irqchip(struct gpio_chip *gc,

if (!ops)
ops = &gpiochip_domain_ops;
- gc->irq.domain = irq_domain_add_simple(np,
+ gc->irq.domain = irq_domain_create_simple(fwnode,
gc->ngpio,
gc->irq.first,
ops, gc);
--
2.30.1