diff options
Diffstat (limited to 'drivers/base/platform.c')
| -rw-r--r-- | drivers/base/platform.c | 51 |
1 files changed, 40 insertions, 11 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 3a94b799f16..eee48c49f5d 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -13,6 +13,7 @@ #include <linux/string.h> #include <linux/platform_device.h> #include <linux/of_device.h> +#include <linux/of_irq.h> #include <linux/module.h> #include <linux/init.h> #include <linux/dma-mapping.h> @@ -87,7 +88,16 @@ int platform_get_irq(struct platform_device *dev, unsigned int num) return -ENXIO; return dev->archdata.irqs[num]; #else - struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ, num); + struct resource *r; + if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) { + int ret; + + ret = of_irq_get(dev->dev.of_node, num); + if (ret >= 0 || ret == -EPROBE_DEFER) + return ret; + } + + r = platform_get_resource(dev, IORESOURCE_IRQ, num); return r ? r->start : -ENXIO; #endif @@ -126,9 +136,17 @@ EXPORT_SYMBOL_GPL(platform_get_resource_byname); */ int platform_get_irq_byname(struct platform_device *dev, const char *name) { - struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ, - name); + struct resource *r; + + if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) { + int ret; + ret = of_irq_get_byname(dev->dev.of_node, name); + if (ret >= 0 || ret == -EPROBE_DEFER) + return ret; + } + + r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name); return r ? r->start : -ENXIO; } EXPORT_SYMBOL_GPL(platform_get_irq_byname); @@ -481,11 +499,10 @@ static int platform_drv_probe(struct device *_dev) struct platform_device *dev = to_platform_device(_dev); int ret; - if (ACPI_HANDLE(_dev)) - acpi_dev_pm_attach(_dev, true); + acpi_dev_pm_attach(_dev, true); ret = drv->probe(dev); - if (ret && ACPI_HANDLE(_dev)) + if (ret) acpi_dev_pm_detach(_dev, true); if (drv->prevent_deferred_probe && ret == -EPROBE_DEFER) { @@ -508,8 +525,7 @@ static int platform_drv_remove(struct device *_dev) int ret; ret = drv->remove(dev); - if (ACPI_HANDLE(_dev)) - acpi_dev_pm_detach(_dev, true); + acpi_dev_pm_detach(_dev, true); return ret; } @@ -520,8 +536,7 @@ static void platform_drv_shutdown(struct device *_dev) struct platform_device *dev = to_platform_device(_dev); drv->shutdown(dev); - if (ACPI_HANDLE(_dev)) - acpi_dev_pm_detach(_dev, true); + acpi_dev_pm_detach(_dev, true); } /** @@ -677,7 +692,17 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a, char *buf) { struct platform_device *pdev = to_platform_device(dev); - int len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name); + int len; + + len = of_device_get_modalias(dev, buf, PAGE_SIZE -1); + if (len != -ENODEV) + return len; + + len = acpi_device_modalias(dev, buf, PAGE_SIZE -1); + if (len != -ENODEV) + return len; + + len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name); return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; } @@ -699,6 +724,10 @@ static int platform_uevent(struct device *dev, struct kobj_uevent_env *env) if (rc != -ENODEV) return rc; + rc = acpi_device_uevent_modalias(dev, env); + if (rc != -ENODEV) + return rc; + add_uevent_var(env, "MODALIAS=%s%s", PLATFORM_MODULE_PREFIX, pdev->name); return 0; |