diff options
| author | Keguang Zhang <keguang.zhang@gmail.com> | 2023-03-15 14:06:49 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-03-23 16:31:18 +0300 |
| commit | 9bc167e27cc5f3a078492b4cfcaaa2432ebb6eb0 (patch) | |
| tree | db3b93ff93fa33594ced31c7958e3ae752c19ae1 /drivers/gpio/gpio-loongson1.c | |
| parent | 722cfe4ffa6a13324e956bee81a1c0976034d89d (diff) | |
| download | linux-9bc167e27cc5f3a078492b4cfcaaa2432ebb6eb0.tar.xz | |
gpio: loongson1: Add DT support
This patch adds DT support for Loongson-1 GPIO driver.
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-loongson1.c')
| -rw-r--r-- | drivers/gpio/gpio-loongson1.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/gpio/gpio-loongson1.c b/drivers/gpio/gpio-loongson1.c index dddfc71f0e10..6ca3b969db4d 100644 --- a/drivers/gpio/gpio-loongson1.c +++ b/drivers/gpio/gpio-loongson1.c @@ -68,25 +68,38 @@ static int ls1x_gpio_probe(struct platform_device *pdev) ls1x_gc->gc.owner = THIS_MODULE; ls1x_gc->gc.request = ls1x_gpio_request; ls1x_gc->gc.free = ls1x_gpio_free; - ls1x_gc->gc.base = pdev->id * 32; + /* + * Clear ngpio to let gpiolib get the correct number + * by reading ngpios property + */ + ls1x_gc->gc.ngpio = 0; ret = devm_gpiochip_add_data(dev, &ls1x_gc->gc, ls1x_gc); if (ret) goto err; platform_set_drvdata(pdev, ls1x_gc); - dev_info(dev, "Loongson1 GPIO driver registered\n"); + + dev_info(dev, "GPIO controller registered with %d pins\n", + ls1x_gc->gc.ngpio); return 0; err: - dev_err(dev, "failed to register GPIO device\n"); + dev_err(dev, "failed to register GPIO controller\n"); return ret; } +static const struct of_device_id ls1x_gpio_dt_ids[] = { + { .compatible = "loongson,ls1x-gpio" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ls1x_gpio_dt_ids); + static struct platform_driver ls1x_gpio_driver = { .probe = ls1x_gpio_probe, .driver = { .name = "ls1x-gpio", + .of_match_table = ls1x_gpio_dt_ids, }, }; |