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gpio/tc3589x: convert to use the simple irqdomain

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The special checks for whether we have a base IRQ offset or not
is surplus if we use the simple IRQ domain. The IRQ offset
zero will be interpreted as a linear domain case.

Plus this makes sure we allocate descriptors where need be, or
warn if they are preallocated with SPARSE_IRQ.

Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2012-10-16 19:43:53 +02:00
parent 7385500a49
commit a362605b34
1 changed files with 9 additions and 11 deletions
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20
drivers/gpio/gpio-tc3589x.c
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@ -292,17 +292,15 @@ static int tc3589x_gpio_irq_init(struct tc3589x_gpio *tc3589x_gpio,
{
int base = tc3589x_gpio->irq_base;
if (base) {
tc3589x_gpio->domain = irq_domain_add_legacy(
NULL, tc3589x_gpio->chip.ngpio, base,
0, &tc3589x_irq_ops, tc3589x_gpio);
}
else {
tc3589x_gpio->domain = irq_domain_add_linear(
np, tc3589x_gpio->chip.ngpio,
&tc3589x_irq_ops, tc3589x_gpio);
}
/*
* If this results in a linear domain, irq_create_mapping() will
* take care of allocating IRQ descriptors at runtime. When a base
* is provided, the IRQ descriptors will be allocated when the
* domain is instantiated.
*/
tc3589x_gpio->domain = irq_domain_add_simple(np,
tc3589x_gpio->chip.ngpio, base, &tc3589x_irq_ops,
tc3589x_gpio);
if (!tc3589x_gpio->domain) {
dev_err(tc3589x_gpio->dev, "Failed to create irqdomain\n");
return -ENOSYS;