ACPI: updates rtc-cmos device platform_data

}

arch_initcall(init_acpi_device_notify);

#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE)

/* Every ACPI platform has a mc146818 compatible "cmos rtc".  Here we find

 * its device node and pass extra config data.  This helps its driver use

 * capabilities that the now-obsolete mc146818 didn't have, and informs it

 * that this board's RTC is wakeup-capable (per ACPI spec).

 */

#include <linux/mc146818rtc.h>

static struct cmos_rtc_board_info rtc_info;

#ifdef CONFIG_PNPACPI

/* PNP devices are registered in a subsys_initcall();

 * ACPI specifies the PNP IDs to use.

 */

#include <linux/pnp.h>

static int __init pnp_match(struct device *dev, void *data)

{

	static const char *ids[] = { "PNP0b00", "PNP0b01", "PNP0b02", };

	struct pnp_dev *pnp = to_pnp_dev(dev);

	int i;

	for (i = 0; i < ARRAY_SIZE(ids); i++) {

		if (compare_pnp_id(pnp->id, ids[i]) != 0)

			return 1;

	}

	return 0;

}

static struct device *__init get_rtc_dev(void)

{

	return bus_find_device(&pnp_bus_type, NULL, NULL, pnp_match);

}

#else

/* We expect non-PNPACPI platforms to register an RTC device, usually

 * at or near arch_initcall().  That also helps for example PCs that

 * aren't configured with ACPI (where this code wouldn't run, but the

 * RTC would still be available).  The device name matches the driver;

 * that's how the platform bus works.

 */

#include <linux/platform_device.h>

static int __init platform_match(struct device *dev, void *data)

{

	struct platform_device	*pdev;

	pdev = container_of(dev, struct platform_device, dev);

	return strcmp(pdev->name, "rtc_cmos") == 0;

}

static struct device *__init get_rtc_dev(void)

{

	return bus_find_device(&platform_bus_type, NULL, NULL, platform_match);

}

#endif

static int __init acpi_rtc_init(void)

{

	struct device *dev = get_rtc_dev();

	if (dev) {

		rtc_info.rtc_day_alarm = acpi_gbl_FADT.day_alarm;

		rtc_info.rtc_mon_alarm = acpi_gbl_FADT.month_alarm;

		rtc_info.rtc_century = acpi_gbl_FADT.century;

		/* NOTE:  acpi_gbl_FADT->rtcs4 is NOT currently useful */

		dev->platform_data = &rtc_info;

		/* RTC always wakes from S1/S2/S3, and often S4/STD */

		device_init_wakeup(dev, 1);

		put_device(dev);

	} else

		pr_debug("ACPI: RTC unavailable?\n");

	return 0;

}

/* do this between RTC subsys_initcall() and rtc_cmos driver_initcall() */

fs_initcall(acpi_rtc_init);

#endif