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authorLen Brown <len.brown@intel.com>2009-01-09 00:13:17 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:30:47 -0500
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/sleep/proc.c
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/sleep/proc.c')
-rw-r--r--drivers/acpi/sleep/proc.c520
1 files changed, 0 insertions, 520 deletions
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
deleted file mode 100644
index 1c4851ff265..00000000000
--- a/drivers/acpi/sleep/proc.c
+++ /dev/null
@@ -1,520 +0,0 @@
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/suspend.h>
-#include <linux/bcd.h>
-#include <asm/uaccess.h>
-
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
-
-#ifdef CONFIG_X86
-#include <linux/mc146818rtc.h>
-#endif
-
-#include "sleep.h"
-
-#define _COMPONENT ACPI_SYSTEM_COMPONENT
-
-/*
- * this file provides support for:
- * /proc/acpi/sleep
- * /proc/acpi/alarm
- * /proc/acpi/wakeup
- */
-
-ACPI_MODULE_NAME("sleep")
-#ifdef CONFIG_ACPI_PROCFS
-static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
-{
- int i;
-
- for (i = 0; i <= ACPI_STATE_S5; i++) {
- if (sleep_states[i]) {
- seq_printf(seq, "S%d ", i);
- }
- }
-
- seq_puts(seq, "\n");
-
- return 0;
-}
-
-static int acpi_system_sleep_open_fs(struct inode *inode, struct file *file)
-{
- return single_open(file, acpi_system_sleep_seq_show, PDE(inode)->data);
-}
-
-static ssize_t
-acpi_system_write_sleep(struct file *file,
- const char __user * buffer, size_t count, loff_t * ppos)
-{
- char str[12];
- u32 state = 0;
- int error = 0;
-
- if (count > sizeof(str) - 1)
- goto Done;
- memset(str, 0, sizeof(str));
- if (copy_from_user(str, buffer, count))
- return -EFAULT;
-
- /* Check for S4 bios request */
- if (!strcmp(str, "4b")) {
- error = acpi_suspend(4);
- goto Done;
- }
- state = simple_strtoul(str, NULL, 0);
-#ifdef CONFIG_HIBERNATION
- if (state == 4) {
- error = hibernate();
- goto Done;
- }
-#endif
- error = acpi_suspend(state);
- Done:
- return error ? error : count;
-}
-#endif /* CONFIG_ACPI_PROCFS */
-
-#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86)
-/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */
-#else
-#define HAVE_ACPI_LEGACY_ALARM
-#endif
-
-#ifdef HAVE_ACPI_LEGACY_ALARM
-
-static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
-{
- u32 sec, min, hr;
- u32 day, mo, yr, cent = 0;
- unsigned char rtc_control = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&rtc_lock, flags);
-
- sec = CMOS_READ(RTC_SECONDS_ALARM);
- min = CMOS_READ(RTC_MINUTES_ALARM);
- hr = CMOS_READ(RTC_HOURS_ALARM);
- rtc_control = CMOS_READ(RTC_CONTROL);
-
- /* If we ever get an FACP with proper values... */
- if (acpi_gbl_FADT.day_alarm)
- /* ACPI spec: only low 6 its should be cared */
- day = CMOS_READ(acpi_gbl_FADT.day_alarm) & 0x3F;
- else
- day = CMOS_READ(RTC_DAY_OF_MONTH);
- if (acpi_gbl_FADT.month_alarm)
- mo = CMOS_READ(acpi_gbl_FADT.month_alarm);
- else
- mo = CMOS_READ(RTC_MONTH);
- if (acpi_gbl_FADT.century)
- cent = CMOS_READ(acpi_gbl_FADT.century);
-
- yr = CMOS_READ(RTC_YEAR);
-
- spin_unlock_irqrestore(&rtc_lock, flags);
-
- if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
- sec = bcd2bin(sec);
- min = bcd2bin(min);
- hr = bcd2bin(hr);
- day = bcd2bin(day);
- mo = bcd2bin(mo);
- yr = bcd2bin(yr);
- cent = bcd2bin(cent);
- }
-
- /* we're trusting the FADT (see above) */
- if (!acpi_gbl_FADT.century)
- /* If we're not trusting the FADT, we should at least make it
- * right for _this_ century... ehm, what is _this_ century?
- *
- * TBD:
- * ASAP: find piece of code in the kernel, e.g. star tracker driver,
- * which we can trust to determine the century correctly. Atom
- * watch driver would be nice, too...
- *
- * if that has not happened, change for first release in 2050:
- * if (yr<50)
- * yr += 2100;
- * else
- * yr += 2000; // current line of code
- *
- * if that has not happened either, please do on 2099/12/31:23:59:59
- * s/2000/2100
- *
- */
- yr += 2000;
- else
- yr += cent * 100;
-
- seq_printf(seq, "%4.4u-", yr);
- (mo > 12) ? seq_puts(seq, "**-") : seq_printf(seq, "%2.2u-", mo);
- (day > 31) ? seq_puts(seq, "** ") : seq_printf(seq, "%2.2u ", day);
- (hr > 23) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", hr);
- (min > 59) ? seq_puts(seq, "**:") : seq_printf(seq, "%2.2u:", min);
- (sec > 59) ? seq_puts(seq, "**\n") : seq_printf(seq, "%2.2u\n", sec);
-
- return 0;
-}
-
-static int acpi_system_alarm_open_fs(struct inode *inode, struct file *file)
-{
- return single_open(file, acpi_system_alarm_seq_show, PDE(inode)->data);
-}
-
-static int get_date_field(char **p, u32 * value)
-{
- char *next = NULL;
- char *string_end = NULL;
- int result = -EINVAL;
-
- /*
- * Try to find delimeter, only to insert null. The end of the
- * string won't have one, but is still valid.
- */
- if (*p == NULL)
- return result;
-
- next = strpbrk(*p, "- :");
- if (next)
- *next++ = '\0';
-
- *value = simple_strtoul(*p, &string_end, 10);
-
- /* Signal success if we got a good digit */
- if (string_end != *p)
- result = 0;
-
- if (next)
- *p = next;
- else
- *p = NULL;
-
- return result;
-}
-
-/* Read a possibly BCD register, always return binary */
-static u32 cmos_bcd_read(int offset, int rtc_control)
-{
- u32 val = CMOS_READ(offset);
- if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
- val = bcd2bin(val);
- return val;
-}
-
-/* Write binary value into possibly BCD register */
-static void cmos_bcd_write(u32 val, int offset, int rtc_control)
-{
- if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
- val = bin2bcd(val);
- CMOS_WRITE(val, offset);
-}
-
-static ssize_t
-acpi_system_write_alarm(struct file *file,
- const char __user * buffer, size_t count, loff_t * ppos)
-{
- int result = 0;
- char alarm_string[30] = { '\0' };
- char *p = alarm_string;
- u32 sec, min, hr, day, mo, yr;
- int adjust = 0;
- unsigned char rtc_control = 0;
-
- if (count > sizeof(alarm_string) - 1)
- return -EINVAL;
-
- if (copy_from_user(alarm_string, buffer, count))
- return -EFAULT;
-
- alarm_string[count] = '\0';
-
- /* check for time adjustment */
- if (alarm_string[0] == '+') {
- p++;
- adjust = 1;
- }
-
- if ((result = get_date_field(&p, &yr)))
- goto end;
- if ((result = get_date_field(&p, &mo)))
- goto end;
- if ((result = get_date_field(&p, &day)))
- goto end;
- if ((result = get_date_field(&p, &hr)))
- goto end;
- if ((result = get_date_field(&p, &min)))
- goto end;
- if ((result = get_date_field(&p, &sec)))
- goto end;
-
- spin_lock_irq(&rtc_lock);
-
- rtc_control = CMOS_READ(RTC_CONTROL);
-
- if (adjust) {
- yr += cmos_bcd_read(RTC_YEAR, rtc_control);
- mo += cmos_bcd_read(RTC_MONTH, rtc_control);
- day += cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control);
- hr += cmos_bcd_read(RTC_HOURS, rtc_control);
- min += cmos_bcd_read(RTC_MINUTES, rtc_control);
- sec += cmos_bcd_read(RTC_SECONDS, rtc_control);
- }
-
- spin_unlock_irq(&rtc_lock);
-
- if (sec > 59) {
- min += sec/60;
- sec = sec%60;
- }
- if (min > 59) {
- hr += min/60;
- min = min%60;
- }
- if (hr > 23) {
- day += hr/24;
- hr = hr%24;
- }
- if (day > 31) {
- mo += day/32;
- day = day%32;
- }
- if (mo > 12) {
- yr += mo/13;
- mo = mo%13;
- }
-
- 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 */
- 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);
-
- /*
- * 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.
- */
- if (acpi_gbl_FADT.day_alarm)
- cmos_bcd_write(day, acpi_gbl_FADT.day_alarm, rtc_control);
- if (acpi_gbl_FADT.month_alarm)
- cmos_bcd_write(mo, acpi_gbl_FADT.month_alarm, rtc_control);
- if (acpi_gbl_FADT.century) {
- if (adjust)
- yr += cmos_bcd_read(acpi_gbl_FADT.century, rtc_control) * 100;
- cmos_bcd_write(yr / 100, acpi_gbl_FADT.century, rtc_control);
- }
- /* 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;
- end:
- return result ? result : count;
-}
-#endif /* HAVE_ACPI_LEGACY_ALARM */
-
-extern struct list_head acpi_wakeup_device_list;
-extern spinlock_t acpi_device_lock;
-
-static int
-acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
-{
- struct list_head *node, *next;
-
- seq_printf(seq, "Device\tS-state\t Status Sysfs node\n");
-
- spin_lock(&acpi_device_lock);
- list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device *dev =
- container_of(node, struct acpi_device, wakeup_list);
- struct device *ldev;
-
- if (!dev->wakeup.flags.valid)
- continue;
- spin_unlock(&acpi_device_lock);
-
- ldev = acpi_get_physical_device(dev->handle);
- seq_printf(seq, "%s\t S%d\t%c%-8s ",
- dev->pnp.bus_id,
- (u32) dev->wakeup.sleep_state,
- dev->wakeup.flags.run_wake ? '*' : ' ',
- dev->wakeup.state.enabled ? "enabled" : "disabled");
- if (ldev)
- seq_printf(seq, "%s:%s",
- ldev->bus ? ldev->bus->name : "no-bus",
- dev_name(ldev));
- seq_printf(seq, "\n");
- put_device(ldev);
-
- spin_lock(&acpi_device_lock);
- }
- spin_unlock(&acpi_device_lock);
- return 0;
-}
-
-static void physical_device_enable_wakeup(struct acpi_device *adev)
-{
- struct device *dev = acpi_get_physical_device(adev->handle);
-
- if (dev && device_can_wakeup(dev))
- device_set_wakeup_enable(dev, adev->wakeup.state.enabled);
-}
-
-static ssize_t
-acpi_system_write_wakeup_device(struct file *file,
- const char __user * buffer,
- size_t count, loff_t * ppos)
-{
- struct list_head *node, *next;
- char strbuf[5];
- char str[5] = "";
- int len = count;
- struct acpi_device *found_dev = NULL;
-
- if (len > 4)
- len = 4;
-
- if (copy_from_user(strbuf, buffer, len))
- return -EFAULT;
- strbuf[len] = '\0';
- sscanf(strbuf, "%s", str);
-
- spin_lock(&acpi_device_lock);
- list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device *dev =
- container_of(node, struct acpi_device, wakeup_list);
- if (!dev->wakeup.flags.valid)
- continue;
-
- if (!strncmp(dev->pnp.bus_id, str, 4)) {
- dev->wakeup.state.enabled =
- dev->wakeup.state.enabled ? 0 : 1;
- found_dev = dev;
- break;
- }
- }
- if (found_dev) {
- physical_device_enable_wakeup(found_dev);
- list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device *dev = container_of(node,
- struct
- acpi_device,
- wakeup_list);
-
- if ((dev != found_dev) &&
- (dev->wakeup.gpe_number ==
- found_dev->wakeup.gpe_number)
- && (dev->wakeup.gpe_device ==
- found_dev->wakeup.gpe_device)) {
- printk(KERN_WARNING
- "ACPI: '%s' and '%s' have the same GPE, "
- "can't disable/enable one seperately\n",
- dev->pnp.bus_id, found_dev->pnp.bus_id);
- dev->wakeup.state.enabled =
- found_dev->wakeup.state.enabled;
- physical_device_enable_wakeup(dev);
- }
- }
- }
- spin_unlock(&acpi_device_lock);
- return count;
-}
-
-static int
-acpi_system_wakeup_device_open_fs(struct inode *inode, struct file *file)
-{
- return single_open(file, acpi_system_wakeup_device_seq_show,
- PDE(inode)->data);
-}
-
-static const struct file_operations acpi_system_wakeup_device_fops = {
- .owner = THIS_MODULE,
- .open = acpi_system_wakeup_device_open_fs,
- .read = seq_read,
- .write = acpi_system_write_wakeup_device,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-#ifdef CONFIG_ACPI_PROCFS
-static const struct file_operations acpi_system_sleep_fops = {
- .owner = THIS_MODULE,
- .open = acpi_system_sleep_open_fs,
- .read = seq_read,
- .write = acpi_system_write_sleep,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif /* CONFIG_ACPI_PROCFS */
-
-#ifdef HAVE_ACPI_LEGACY_ALARM
-static const struct file_operations acpi_system_alarm_fops = {
- .owner = THIS_MODULE,
- .open = acpi_system_alarm_open_fs,
- .read = seq_read,
- .write = acpi_system_write_alarm,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static u32 rtc_handler(void *context)
-{
- acpi_clear_event(ACPI_EVENT_RTC);
- acpi_disable_event(ACPI_EVENT_RTC, 0);
-
- return ACPI_INTERRUPT_HANDLED;
-}
-#endif /* HAVE_ACPI_LEGACY_ALARM */
-
-static int __init acpi_sleep_proc_init(void)
-{
- if (acpi_disabled)
- return 0;
-
-#ifdef CONFIG_ACPI_PROCFS
- /* 'sleep' [R/W] */
- proc_create("sleep", S_IFREG | S_IRUGO | S_IWUSR,
- acpi_root_dir, &acpi_system_sleep_fops);
-#endif /* CONFIG_ACPI_PROCFS */
-
-#ifdef HAVE_ACPI_LEGACY_ALARM
- /* 'alarm' [R/W] */
- proc_create("alarm", S_IFREG | S_IRUGO | S_IWUSR,
- acpi_root_dir, &acpi_system_alarm_fops);
-
- acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
- /*
- * 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);
-#endif /* HAVE_ACPI_LEGACY_ALARM */
-
- /* 'wakeup device' [R/W] */
- proc_create("wakeup", S_IFREG | S_IRUGO | S_IWUSR,
- acpi_root_dir, &acpi_system_wakeup_device_fops);
-
- return 0;
-}
-
-late_initcall(acpi_sleep_proc_init);