diff options
| author |   Vincent Whitchurch <vincent.whitchurch@axis.com> | 2020-10-29 09:17:20 +0100 |
|---|---|---|
| committer |   Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-10-29 10:39:09 +0100 |
| commit | 43ddebdd096638ef8cd2ec41d6acca3400069171 (patch) | |
| tree | 1bc632851884017cdad0c05a8156247dc3dc2314 /drivers/gpio/gpio-mockup.c | |
| parent | dt-bindings: gpio: pca953x: Add support for the NXP PCAL9554B/C (diff) | |
| download | linux-dev-43ddebdd096638ef8cd2ec41d6acca3400069171.tar.xz linux-dev-43ddebdd096638ef8cd2ec41d6acca3400069171.zip | |
gpio: mockup: Allow probing from device tree
Allow the mockup driver to be probed via the device tree without any
module parameters, allowing it to be used to configure and test higher
level drivers like the leds-gpio driver and corresponding userspace
before actual hardware is available.
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpio-mockup.c')
| -rw-r--r-- | drivers/gpio/gpio-mockup.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c index 67ed4f238d43..28b757d34046 100644 --- a/drivers/gpio/gpio-mockup.c +++ b/drivers/gpio/gpio-mockup.c @@ -15,6 +15,7 @@ #include <linux/irq.h> #include <linux/irq_sim.h> #include <linux/irqdomain.h> +#include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/property.h> @@ -460,9 +461,16 @@ static int gpio_mockup_probe(struct platform_device *pdev) return 0; } +static const struct of_device_id gpio_mockup_of_match[] = { + { .compatible = "gpio-mockup", }, + {}, +}; +MODULE_DEVICE_TABLE(of, gpio_mockup_of_match); + static struct platform_driver gpio_mockup_driver = { .driver = { .name = "gpio-mockup", + .of_match_table = gpio_mockup_of_match, }, .probe = gpio_mockup_probe, }; @@ -556,8 +564,7 @@ static int __init gpio_mockup_init(void) { int i, num_chips, err; - if ((gpio_mockup_num_ranges < 2) || - (gpio_mockup_num_ranges % 2) || + if ((gpio_mockup_num_ranges % 2) || (gpio_mockup_num_ranges > GPIO_MOCKUP_MAX_RANGES)) return -EINVAL; |