From: Linus Walleij <[email protected]> This makes it possible to probe the COH901 pinctrl driver from the device tree, and assigned the device tree node in the gpio_chip so we can look up cross-references from the device tree.
Signed-off-by: Linus Walleij <[email protected]> --- .../devicetree/bindings/gpio/gpio-stericsson-coh901.txt | 9 +++++++++ drivers/pinctrl/pinctrl-coh901.c | 9 +++++++++ 2 files changed, 18 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt b/Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt new file mode 100644 index 0000000..355f8ea --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt @@ -0,0 +1,9 @@ +ST-Ericsson COH 901 571/3 GPIO controller + +Required properties: +- compatible: Compatible property value should be "stericsson,gpio-coh901" +- reg: Physical base address of the controller and length of memory mapped + region. +- interrupts: the 0...n interrupts assigned to the different GPIO ports/banks. +- interrupt-names: name the interrupts after port/bank, "gpio0", "gpio1" etc. + diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c index 8b7e7bc..bed47ab 100644 --- a/drivers/pinctrl/pinctrl-coh901.c +++ b/drivers/pinctrl/pinctrl-coh901.c @@ -808,6 +808,9 @@ static int __init u300_gpio_probe(struct platform_device *pdev) } dev_dbg(gpio->dev, "initialized %d GPIO ports\n", portno); +#ifdef CONFIG_OF_GPIO + gpio->chip.of_node = pdev->dev.of_node; +#endif err = gpiochip_add(&gpio->chip); if (err) { dev_err(gpio->dev, "unable to add gpiochip: %d\n", err); @@ -861,9 +864,15 @@ static int __exit u300_gpio_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id u300_gpio_match[] = { + { .compatible = "stericsson,gpio-coh901" }, + {}, +}; + static struct platform_driver u300_gpio_driver = { .driver = { .name = "u300-gpio", + .of_match_table = u300_gpio_match, }, .remove = __exit_p(u300_gpio_remove), }; -- 1.7.11.3 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
