diff options
Diffstat (limited to 'net/rfkill/rfkill-gpio.c')
| -rw-r--r-- | net/rfkill/rfkill-gpio.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c index 2dd78c628d86..5620d3c07479 100644 --- a/net/rfkill/rfkill-gpio.c +++ b/net/rfkill/rfkill-gpio.c @@ -24,6 +24,8 @@ #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/slab.h> +#include <linux/acpi.h> +#include <linux/acpi_gpio.h> #include <linux/rfkill-gpio.h> @@ -70,6 +72,23 @@ static const struct rfkill_ops rfkill_gpio_ops = { .set_block = rfkill_gpio_set_power, }; +static int rfkill_gpio_acpi_probe(struct device *dev, + struct rfkill_gpio_data *rfkill) +{ + const struct acpi_device_id *id; + + id = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!id) + return -ENODEV; + + rfkill->name = dev_name(dev); + rfkill->type = (unsigned)id->driver_data; + rfkill->reset_gpio = acpi_get_gpio_by_index(dev, 0, NULL); + rfkill->shutdown_gpio = acpi_get_gpio_by_index(dev, 1, NULL); + + return 0; +} + static int rfkill_gpio_probe(struct platform_device *pdev) { struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data; @@ -82,7 +101,11 @@ static int rfkill_gpio_probe(struct platform_device *pdev) if (!rfkill) return -ENOMEM; - if (pdata) { + if (ACPI_HANDLE(&pdev->dev)) { + ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill); + if (ret) + return ret; + } else if (pdata) { clk_name = pdata->power_clk_name; rfkill->name = pdata->name; rfkill->type = pdata->type; @@ -170,12 +193,18 @@ static int rfkill_gpio_remove(struct platform_device *pdev) return 0; } +static const struct acpi_device_id rfkill_acpi_match[] = { + { "BCM4752", RFKILL_TYPE_GPS }, + { }, +}; + static struct platform_driver rfkill_gpio_driver = { .probe = rfkill_gpio_probe, .remove = rfkill_gpio_remove, .driver = { .name = "rfkill_gpio", .owner = THIS_MODULE, + .acpi_match_table = ACPI_PTR(rfkill_acpi_match), }, }; |