From: Mika Westerberg <[email protected]> Following what DT already does. If the device does not have ACPI Interrupt resource but instead it has one or more GpioInt resources listed below it, we take the first GpioInt resource, convert it to suitable Linux IRQ number and pass it to the driver instead.
This makes drivers simpler because the don't need to care about GPIOs at all if only thing they need is interrupt. Signed-off-by: Mika Westerberg <[email protected]> Acked-by: Wolfram Sang <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Upstream-status: Backport Signed-off-by: Saul Wold <[email protected]> --- drivers/i2c/i2c-core.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index c21b3de..fc2ee82 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -631,8 +631,13 @@ static int i2c_device_probe(struct device *dev) if (!client) return 0; - if (!client->irq && dev->of_node) { - int irq = of_irq_get(dev->of_node, 0); + if (!client->irq) { + int irq = -ENOENT; + + if (dev->of_node) + irq = of_irq_get(dev->of_node, 0); + else if (ACPI_COMPANION(dev)) + irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 0); if (irq == -EPROBE_DEFER) return irq; -- 2.5.0 -- _______________________________________________ linux-yocto mailing list [email protected] https://lists.yoctoproject.org/listinfo/linux-yocto
