2005-04-16 22:20:36 +00:00
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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2011-10-26 20:22:14 +00:00
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#include <linux/export.h>
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2005-04-16 22:20:36 +00:00
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#include <linux/suspend.h>
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#include <linux/bcd.h>
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#include <asm/uaccess.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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#ifdef CONFIG_X86
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#include <linux/mc146818rtc.h>
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#endif
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#include "sleep.h"
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#define _COMPONENT ACPI_SYSTEM_COMPONENT
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2007-07-24 06:16:50 +00:00
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/*
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* this file provides support for:
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* /proc/acpi/alarm
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* /proc/acpi/wakeup
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*/
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2005-08-05 04:44:28 +00:00
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ACPI_MODULE_NAME("sleep")
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2005-04-16 22:20:36 +00:00
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2007-07-28 07:33:16 +00:00
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#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86)
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2007-05-08 07:34:02 +00:00
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/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */
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#else
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#define HAVE_ACPI_LEGACY_ALARM
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#endif
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#ifdef HAVE_ACPI_LEGACY_ALARM
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2009-01-09 07:10:16 +00:00
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static u32 cmos_bcd_read(int offset, int rtc_control);
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2005-04-16 22:20:36 +00:00
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static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
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{
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2005-08-05 04:44:28 +00:00
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u32 sec, min, hr;
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2007-02-02 16:48:19 +00:00
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u32 day, mo, yr, cent = 0;
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2008-12-09 15:46:30 +00:00
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u32 today = 0;
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2005-08-05 04:44:28 +00:00
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unsigned char rtc_control = 0;
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unsigned long flags;
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2005-04-16 22:20:36 +00:00
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spin_lock_irqsave(&rtc_lock, flags);
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rtc_control = CMOS_READ(RTC_CONTROL);
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2008-12-09 15:46:30 +00:00
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sec = cmos_bcd_read(RTC_SECONDS_ALARM, rtc_control);
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min = cmos_bcd_read(RTC_MINUTES_ALARM, rtc_control);
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hr = cmos_bcd_read(RTC_HOURS_ALARM, rtc_control);
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2005-04-16 22:20:36 +00:00
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/* If we ever get an FACP with proper values... */
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2008-12-09 15:46:30 +00:00
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if (acpi_gbl_FADT.day_alarm) {
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2005-04-16 22:20:36 +00:00
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/* ACPI spec: only low 6 its should be cared */
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2007-02-02 16:48:19 +00:00
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day = CMOS_READ(acpi_gbl_FADT.day_alarm) & 0x3F;
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2008-12-09 15:46:30 +00:00
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if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
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day = bcd2bin(day);
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} else
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day = cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control);
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2007-02-02 16:48:19 +00:00
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if (acpi_gbl_FADT.month_alarm)
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2008-12-09 15:46:30 +00:00
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mo = cmos_bcd_read(acpi_gbl_FADT.month_alarm, rtc_control);
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else {
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mo = cmos_bcd_read(RTC_MONTH, rtc_control);
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today = cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control);
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}
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2007-02-02 16:48:19 +00:00
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if (acpi_gbl_FADT.century)
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2008-12-09 15:46:30 +00:00
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cent = cmos_bcd_read(acpi_gbl_FADT.century, rtc_control);
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2007-02-02 16:48:19 +00:00
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2008-12-09 15:46:30 +00:00
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yr = cmos_bcd_read(RTC_YEAR, rtc_control);
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2005-04-16 22:20:36 +00:00
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spin_unlock_irqrestore(&rtc_lock, flags);
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2005-08-05 04:44:28 +00:00
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/* we're trusting the FADT (see above) */
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2007-02-02 16:48:19 +00:00
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if (!acpi_gbl_FADT.century)
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2005-08-05 04:44:28 +00:00
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/* If we're not trusting the FADT, we should at least make it
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* right for _this_ century... ehm, what is _this_ century?
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*
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* TBD:
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* ASAP: find piece of code in the kernel, e.g. star tracker driver,
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* which we can trust to determine the century correctly. Atom
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* watch driver would be nice, too...
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*
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* if that has not happened, change for first release in 2050:
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* if (yr<50)
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* yr += 2100;
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* else
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* yr += 2000; // current line of code
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*
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* if that has not happened either, please do on 2099/12/31:23:59:59
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* s/2000/2100
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*
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*/
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2005-04-16 22:20:36 +00:00
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yr += 2000;
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2007-02-02 16:48:19 +00:00
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else
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yr += cent * 100;
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2005-04-16 22:20:36 +00:00
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2008-12-09 15:46:30 +00:00
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/*
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* Show correct dates for alarms up to a month into the future.
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* This solves issues for nearly all situations with the common
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* 30-day alarm clocks in PC hardware.
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*/
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if (day < today) {
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if (mo < 12) {
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mo += 1;
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} else {
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mo = 1;
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yr += 1;
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}
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}
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2005-08-05 04:44:28 +00:00
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seq_printf(seq, "%4.4u-", yr);
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(mo > 12) ? seq_puts(seq, "**-") : seq_printf(seq, "%2.2u-", mo);
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(day > 31) ? seq_puts(seq, "** ") : seq_printf(seq, "%2.2u ", day);
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(hr > 23) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", hr);
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(min > 59) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", min);
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2005-04-16 22:20:36 +00:00
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(sec > 59) ? seq_puts(seq, "**\n") : seq_printf(seq, "%2.2u\n", sec);
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return 0;
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}
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static int acpi_system_alarm_open_fs(struct inode *inode, struct file *file)
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{
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return single_open(file, acpi_system_alarm_seq_show, PDE(inode)->data);
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}
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2005-08-05 04:44:28 +00:00
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static int get_date_field(char **p, u32 * value)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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char *next = NULL;
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char *string_end = NULL;
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int result = -EINVAL;
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2005-04-16 22:20:36 +00:00
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/*
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* Try to find delimeter, only to insert null. The end of the
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* string won't have one, but is still valid.
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*/
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2007-12-28 02:50:42 +00:00
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if (*p == NULL)
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return result;
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2005-04-16 22:20:36 +00:00
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next = strpbrk(*p, "- :");
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if (next)
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*next++ = '\0';
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*value = simple_strtoul(*p, &string_end, 10);
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/* Signal success if we got a good digit */
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if (string_end != *p)
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result = 0;
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if (next)
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*p = next;
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2007-12-28 02:50:42 +00:00
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else
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*p = NULL;
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2005-04-16 22:20:36 +00:00
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return result;
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}
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2007-10-18 03:18:32 +00:00
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/* Read a possibly BCD register, always return binary */
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static u32 cmos_bcd_read(int offset, int rtc_control)
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{
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u32 val = CMOS_READ(offset);
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if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
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2008-10-19 03:28:39 +00:00
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val = bcd2bin(val);
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2007-10-18 03:18:32 +00:00
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return val;
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}
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/* Write binary value into possibly BCD register */
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static void cmos_bcd_write(u32 val, int offset, int rtc_control)
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{
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if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
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2008-10-19 03:28:39 +00:00
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val = bin2bcd(val);
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2007-10-18 03:18:32 +00:00
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CMOS_WRITE(val, offset);
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}
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2005-04-16 22:20:36 +00:00
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static ssize_t
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2005-08-05 04:44:28 +00:00
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acpi_system_write_alarm(struct file *file,
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const char __user * buffer, size_t count, loff_t * ppos)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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int result = 0;
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char alarm_string[30] = { '\0' };
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char *p = alarm_string;
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u32 sec, min, hr, day, mo, yr;
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int adjust = 0;
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unsigned char rtc_control = 0;
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2005-04-16 22:20:36 +00:00
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if (count > sizeof(alarm_string) - 1)
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2008-12-16 08:49:26 +00:00
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return -EINVAL;
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2005-08-05 04:44:28 +00:00
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2005-04-16 22:20:36 +00:00
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if (copy_from_user(alarm_string, buffer, count))
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2008-12-16 08:49:26 +00:00
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return -EFAULT;
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2005-04-16 22:20:36 +00:00
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alarm_string[count] = '\0';
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/* check for time adjustment */
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if (alarm_string[0] == '+') {
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p++;
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adjust = 1;
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}
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if ((result = get_date_field(&p, &yr)))
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goto end;
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if ((result = get_date_field(&p, &mo)))
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goto end;
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if ((result = get_date_field(&p, &day)))
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goto end;
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if ((result = get_date_field(&p, &hr)))
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goto end;
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if ((result = get_date_field(&p, &min)))
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goto end;
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if ((result = get_date_field(&p, &sec)))
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goto end;
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spin_lock_irq(&rtc_lock);
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rtc_control = CMOS_READ(RTC_CONTROL);
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if (adjust) {
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2007-10-18 03:18:32 +00:00
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yr += cmos_bcd_read(RTC_YEAR, rtc_control);
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mo += cmos_bcd_read(RTC_MONTH, rtc_control);
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day += cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control);
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hr += cmos_bcd_read(RTC_HOURS, rtc_control);
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min += cmos_bcd_read(RTC_MINUTES, rtc_control);
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sec += cmos_bcd_read(RTC_SECONDS, rtc_control);
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2005-04-16 22:20:36 +00:00
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}
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spin_unlock_irq(&rtc_lock);
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if (sec > 59) {
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ACPI: /proc/acpi/alarm parsing: handle large numbers properly
In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c,
big sec, min, hr, mo, day and yr are counted twice to get reasonable
values, that is very superfluous, we can do that only once.
In additon, /proc/acpi/alarm can set a related value which can be
specified as YYYY years MM months DD days HH hours MM minutes SS
senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00
, that means 3 days later, current code can't handle such a case.
This patch removes unnecessary code and does with the aforementioned
situation.
Before applying this patch:
[root@localhost /]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
0007-12-02 **:**:**
[root@localhost /]#
After applying this patch:
[root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
0007-12-04 03:03:00
[root@localhost ~]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-12-28 03:04:26 +00:00
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min += sec/60;
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sec = sec%60;
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2005-04-16 22:20:36 +00:00
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}
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if (min > 59) {
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ACPI: /proc/acpi/alarm parsing: handle large numbers properly
In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c,
big sec, min, hr, mo, day and yr are counted twice to get reasonable
values, that is very superfluous, we can do that only once.
In additon, /proc/acpi/alarm can set a related value which can be
specified as YYYY years MM months DD days HH hours MM minutes SS
senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00
, that means 3 days later, current code can't handle such a case.
This patch removes unnecessary code and does with the aforementioned
situation.
Before applying this patch:
[root@localhost /]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
0007-12-02 **:**:**
[root@localhost /]#
After applying this patch:
[root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
0007-12-04 03:03:00
[root@localhost ~]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-12-28 03:04:26 +00:00
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hr += min/60;
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min = min%60;
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2005-04-16 22:20:36 +00:00
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}
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if (hr > 23) {
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ACPI: /proc/acpi/alarm parsing: handle large numbers properly
In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c,
big sec, min, hr, mo, day and yr are counted twice to get reasonable
values, that is very superfluous, we can do that only once.
In additon, /proc/acpi/alarm can set a related value which can be
specified as YYYY years MM months DD days HH hours MM minutes SS
senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00
, that means 3 days later, current code can't handle such a case.
This patch removes unnecessary code and does with the aforementioned
situation.
Before applying this patch:
[root@localhost /]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
0007-12-02 **:**:**
[root@localhost /]#
After applying this patch:
[root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
0007-12-04 03:03:00
[root@localhost ~]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-12-28 03:04:26 +00:00
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day += hr/24;
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hr = hr%24;
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2005-04-16 22:20:36 +00:00
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}
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if (day > 31) {
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ACPI: /proc/acpi/alarm parsing: handle large numbers properly
In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c,
big sec, min, hr, mo, day and yr are counted twice to get reasonable
values, that is very superfluous, we can do that only once.
In additon, /proc/acpi/alarm can set a related value which can be
specified as YYYY years MM months DD days HH hours MM minutes SS
senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00
, that means 3 days later, current code can't handle such a case.
This patch removes unnecessary code and does with the aforementioned
situation.
Before applying this patch:
[root@localhost /]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
0007-12-02 **:**:**
[root@localhost /]#
After applying this patch:
[root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
0007-12-04 03:03:00
[root@localhost ~]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-12-28 03:04:26 +00:00
|
|
|
mo += day/32;
|
|
|
|
day = day%32;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
if (mo > 12) {
|
ACPI: /proc/acpi/alarm parsing: handle large numbers properly
In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c,
big sec, min, hr, mo, day and yr are counted twice to get reasonable
values, that is very superfluous, we can do that only once.
In additon, /proc/acpi/alarm can set a related value which can be
specified as YYYY years MM months DD days HH hours MM minutes SS
senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00
, that means 3 days later, current code can't handle such a case.
This patch removes unnecessary code and does with the aforementioned
situation.
Before applying this patch:
[root@localhost /]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
0007-12-02 **:**:**
[root@localhost /]#
After applying this patch:
[root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
0007-12-04 03:03:00
[root@localhost ~]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2007-12-28 03:04:26 +00:00
|
|
|
yr += mo/13;
|
|
|
|
mo = mo%13;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_irq(&rtc_lock);
|
|
|
|
/*
|
|
|
|
* Disable alarm interrupt before setting alarm timer or else
|
|
|
|
* when ACPI_EVENT_RTC is enabled, a spurious ACPI interrupt occurs
|
|
|
|
*/
|
|
|
|
rtc_control &= ~RTC_AIE;
|
|
|
|
CMOS_WRITE(rtc_control, RTC_CONTROL);
|
|
|
|
CMOS_READ(RTC_INTR_FLAGS);
|
|
|
|
|
|
|
|
/* write the fields the rtc knows about */
|
2007-10-18 03:18:32 +00:00
|
|
|
cmos_bcd_write(hr, RTC_HOURS_ALARM, rtc_control);
|
|
|
|
cmos_bcd_write(min, RTC_MINUTES_ALARM, rtc_control);
|
|
|
|
cmos_bcd_write(sec, RTC_SECONDS_ALARM, rtc_control);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* If the system supports an enhanced alarm it will have non-zero
|
|
|
|
* offsets into the CMOS RAM here -- which for some reason are pointing
|
|
|
|
* to the RTC area of memory.
|
|
|
|
*/
|
2007-02-02 16:48:19 +00:00
|
|
|
if (acpi_gbl_FADT.day_alarm)
|
2007-10-18 03:18:32 +00:00
|
|
|
cmos_bcd_write(day, acpi_gbl_FADT.day_alarm, rtc_control);
|
2007-02-02 16:48:19 +00:00
|
|
|
if (acpi_gbl_FADT.month_alarm)
|
2007-10-18 03:18:32 +00:00
|
|
|
cmos_bcd_write(mo, acpi_gbl_FADT.month_alarm, rtc_control);
|
2008-07-04 16:59:31 +00:00
|
|
|
if (acpi_gbl_FADT.century) {
|
|
|
|
if (adjust)
|
|
|
|
yr += cmos_bcd_read(acpi_gbl_FADT.century, rtc_control) * 100;
|
2007-10-18 03:18:32 +00:00
|
|
|
cmos_bcd_write(yr / 100, acpi_gbl_FADT.century, rtc_control);
|
2008-07-04 16:59:31 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
/* enable the rtc alarm interrupt */
|
|
|
|
rtc_control |= RTC_AIE;
|
|
|
|
CMOS_WRITE(rtc_control, RTC_CONTROL);
|
|
|
|
CMOS_READ(RTC_INTR_FLAGS);
|
|
|
|
|
|
|
|
spin_unlock_irq(&rtc_lock);
|
|
|
|
|
|
|
|
acpi_clear_event(ACPI_EVENT_RTC);
|
|
|
|
acpi_enable_event(ACPI_EVENT_RTC, 0);
|
|
|
|
|
|
|
|
*ppos += count;
|
|
|
|
|
|
|
|
result = 0;
|
2005-08-05 04:44:28 +00:00
|
|
|
end:
|
2008-12-16 08:49:26 +00:00
|
|
|
return result ? result : count;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2007-05-10 03:34:35 +00:00
|
|
|
#endif /* HAVE_ACPI_LEGACY_ALARM */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
static int
|
|
|
|
acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
|
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
struct list_head *node, *next;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-04-25 19:20:10 +00:00
|
|
|
seq_printf(seq, "Device\tS-state\t Status Sysfs node\n");
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_lock(&acpi_device_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
|
2005-08-05 04:44:28 +00:00
|
|
|
struct acpi_device *dev =
|
|
|
|
container_of(node, struct acpi_device, wakeup_list);
|
2012-08-17 06:44:09 +00:00
|
|
|
struct acpi_device_physical_node *entry;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (!dev->wakeup.flags.valid)
|
|
|
|
continue;
|
2007-04-25 19:20:10 +00:00
|
|
|
|
2012-08-17 06:44:09 +00:00
|
|
|
seq_printf(seq, "%s\t S%d\t",
|
2005-08-05 04:44:28 +00:00
|
|
|
dev->pnp.bus_id,
|
2012-08-17 06:44:09 +00:00
|
|
|
(u32) dev->wakeup.sleep_state);
|
|
|
|
|
2013-01-27 14:17:55 +00:00
|
|
|
if (!dev->physical_node_count) {
|
2012-08-17 06:44:09 +00:00
|
|
|
seq_printf(seq, "%c%-8s\n",
|
2013-01-27 14:17:55 +00:00
|
|
|
dev->wakeup.flags.run_wake ? '*' : ' ',
|
|
|
|
device_may_wakeup(&dev->dev) ?
|
|
|
|
"enabled" : "disabled");
|
|
|
|
} else {
|
2012-08-17 06:44:09 +00:00
|
|
|
struct device *ldev;
|
|
|
|
list_for_each_entry(entry, &dev->physical_node_list,
|
|
|
|
node) {
|
|
|
|
ldev = get_device(entry->dev);
|
|
|
|
if (!ldev)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (&entry->node !=
|
|
|
|
dev->physical_node_list.next)
|
|
|
|
seq_printf(seq, "\t\t");
|
|
|
|
|
|
|
|
seq_printf(seq, "%c%-8s %s:%s\n",
|
|
|
|
dev->wakeup.flags.run_wake ? '*' : ' ',
|
|
|
|
(device_may_wakeup(&dev->dev) ||
|
|
|
|
(ldev && device_may_wakeup(ldev))) ?
|
|
|
|
"enabled" : "disabled",
|
|
|
|
ldev->bus ? ldev->bus->name :
|
|
|
|
"no-bus", dev_name(ldev));
|
|
|
|
put_device(ldev);
|
|
|
|
}
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_unlock(&acpi_device_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-10-03 22:23:49 +00:00
|
|
|
static void physical_device_enable_wakeup(struct acpi_device *adev)
|
|
|
|
{
|
2012-08-17 06:44:09 +00:00
|
|
|
struct acpi_device_physical_node *entry;
|
2008-10-03 22:23:49 +00:00
|
|
|
|
2012-08-17 06:44:09 +00:00
|
|
|
list_for_each_entry(entry,
|
|
|
|
&adev->physical_node_list, node)
|
|
|
|
if (entry->dev && device_can_wakeup(entry->dev)) {
|
|
|
|
bool enable = !device_may_wakeup(entry->dev);
|
|
|
|
device_set_wakeup_enable(entry->dev, enable);
|
|
|
|
}
|
2008-10-03 22:23:49 +00:00
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static ssize_t
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_system_write_wakeup_device(struct file *file,
|
|
|
|
const char __user * buffer,
|
|
|
|
size_t count, loff_t * ppos)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
struct list_head *node, *next;
|
|
|
|
char strbuf[5];
|
|
|
|
char str[5] = "";
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2012-11-22 22:20:31 +00:00
|
|
|
if (count > 4)
|
|
|
|
count = 4;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2012-11-22 22:20:31 +00:00
|
|
|
if (copy_from_user(strbuf, buffer, count))
|
2005-04-16 22:20:36 +00:00
|
|
|
return -EFAULT;
|
2012-11-22 22:20:31 +00:00
|
|
|
strbuf[count] = '\0';
|
2005-04-16 22:20:36 +00:00
|
|
|
sscanf(strbuf, "%s", str);
|
|
|
|
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_lock(&acpi_device_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
|
2005-08-05 04:44:28 +00:00
|
|
|
struct acpi_device *dev =
|
|
|
|
container_of(node, struct acpi_device, wakeup_list);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (!dev->wakeup.flags.valid)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (!strncmp(dev->pnp.bus_id, str, 4)) {
|
2011-01-06 22:34:22 +00:00
|
|
|
if (device_can_wakeup(&dev->dev)) {
|
|
|
|
bool enable = !device_may_wakeup(&dev->dev);
|
|
|
|
device_set_wakeup_enable(&dev->dev, enable);
|
|
|
|
} else {
|
|
|
|
physical_device_enable_wakeup(dev);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2009-04-07 02:24:29 +00:00
|
|
|
mutex_unlock(&acpi_device_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
acpi_system_wakeup_device_open_fs(struct inode *inode, struct file *file)
|
|
|
|
{
|
2005-08-05 04:44:28 +00:00
|
|
|
return single_open(file, acpi_system_wakeup_device_seq_show,
|
|
|
|
PDE(inode)->data);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-07-04 17:06:00 +00:00
|
|
|
static const struct file_operations acpi_system_wakeup_device_fops = {
|
2008-04-29 08:02:27 +00:00
|
|
|
.owner = THIS_MODULE,
|
2005-08-05 04:44:28 +00:00
|
|
|
.open = acpi_system_wakeup_device_open_fs,
|
|
|
|
.read = seq_read,
|
|
|
|
.write = acpi_system_write_wakeup_device,
|
|
|
|
.llseek = seq_lseek,
|
|
|
|
.release = single_release,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
2007-05-08 07:34:02 +00:00
|
|
|
#ifdef HAVE_ACPI_LEGACY_ALARM
|
2006-07-04 17:06:00 +00:00
|
|
|
static const struct file_operations acpi_system_alarm_fops = {
|
2008-04-29 08:02:27 +00:00
|
|
|
.owner = THIS_MODULE,
|
2005-08-05 04:44:28 +00:00
|
|
|
.open = acpi_system_alarm_open_fs,
|
|
|
|
.read = seq_read,
|
|
|
|
.write = acpi_system_write_alarm,
|
|
|
|
.llseek = seq_lseek,
|
|
|
|
.release = single_release,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
static u32 rtc_handler(void *context)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
acpi_clear_event(ACPI_EVENT_RTC);
|
|
|
|
acpi_disable_event(ACPI_EVENT_RTC, 0);
|
|
|
|
|
|
|
|
return ACPI_INTERRUPT_HANDLED;
|
|
|
|
}
|
2007-05-10 03:34:35 +00:00
|
|
|
#endif /* HAVE_ACPI_LEGACY_ALARM */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-03-24 22:50:14 +00:00
|
|
|
int __init acpi_sleep_proc_init(void)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2007-05-08 07:34:02 +00:00
|
|
|
#ifdef HAVE_ACPI_LEGACY_ALARM
|
2005-04-16 22:20:36 +00:00
|
|
|
/* 'alarm' [R/W] */
|
2008-04-29 08:02:27 +00:00
|
|
|
proc_create("alarm", S_IFREG | S_IRUGO | S_IWUSR,
|
|
|
|
acpi_root_dir, &acpi_system_alarm_fops);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-08 07:34:02 +00:00
|
|
|
acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
|
2008-05-14 03:32:59 +00:00
|
|
|
/*
|
|
|
|
* Disable the RTC event after installing RTC handler.
|
|
|
|
* Only when RTC alarm is set will it be enabled.
|
|
|
|
*/
|
|
|
|
acpi_clear_event(ACPI_EVENT_RTC);
|
|
|
|
acpi_disable_event(ACPI_EVENT_RTC, 0);
|
2007-05-10 03:34:35 +00:00
|
|
|
#endif /* HAVE_ACPI_LEGACY_ALARM */
|
2007-05-08 07:34:02 +00:00
|
|
|
|
2005-08-05 04:37:45 +00:00
|
|
|
/* 'wakeup device' [R/W] */
|
2008-04-29 08:02:27 +00:00
|
|
|
proc_create("wakeup", S_IFREG | S_IRUGO | S_IWUSR,
|
|
|
|
acpi_root_dir, &acpi_system_wakeup_device_fops);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|