510 строки
12 KiB
C
510 строки
12 KiB
C
#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 ACPI_SYSTEM_FILE_SLEEP "sleep"
|
|
#define ACPI_SYSTEM_FILE_ALARM "alarm"
|
|
#define ACPI_SYSTEM_FILE_WAKEUP_DEVICE "wakeup"
|
|
|
|
#define _COMPONENT ACPI_SYSTEM_COMPONENT
|
|
ACPI_MODULE_NAME ("sleep")
|
|
|
|
|
|
static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
|
|
{
|
|
int i;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_system_sleep_seq_show");
|
|
|
|
for (i = 0; i <= ACPI_STATE_S5; i++) {
|
|
if (sleep_states[i]) {
|
|
seq_printf(seq,"S%d ", i);
|
|
if (i == ACPI_STATE_S4 && acpi_gbl_FACS->S4bios_f)
|
|
seq_printf(seq, "S4bios ");
|
|
}
|
|
}
|
|
|
|
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_SOFTWARE_SUSPEND
|
|
if (state == 4) {
|
|
error = software_suspend();
|
|
goto Done;
|
|
}
|
|
#endif
|
|
error = acpi_suspend(state);
|
|
Done:
|
|
return error ? error : count;
|
|
}
|
|
|
|
static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
|
|
{
|
|
u32 sec, min, hr;
|
|
u32 day, mo, yr;
|
|
unsigned char rtc_control = 0;
|
|
unsigned long flags;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_system_alarm_seq_show");
|
|
|
|
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_alrm)
|
|
/* ACPI spec: only low 6 its should be cared */
|
|
day = CMOS_READ(acpi_gbl_FADT->day_alrm) & 0x3F;
|
|
else
|
|
day = CMOS_READ(RTC_DAY_OF_MONTH);
|
|
if (acpi_gbl_FADT->mon_alrm)
|
|
mo = CMOS_READ(acpi_gbl_FADT->mon_alrm);
|
|
else
|
|
mo = CMOS_READ(RTC_MONTH);
|
|
if (acpi_gbl_FADT->century)
|
|
yr = CMOS_READ(acpi_gbl_FADT->century) * 100 + CMOS_READ(RTC_YEAR);
|
|
else
|
|
yr = CMOS_READ(RTC_YEAR);
|
|
|
|
spin_unlock_irqrestore(&rtc_lock, flags);
|
|
|
|
if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
|
|
BCD_TO_BIN(sec);
|
|
BCD_TO_BIN(min);
|
|
BCD_TO_BIN(hr);
|
|
BCD_TO_BIN(day);
|
|
BCD_TO_BIN(mo);
|
|
BCD_TO_BIN(yr);
|
|
}
|
|
|
|
/* 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;
|
|
|
|
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.
|
|
*/
|
|
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;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
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;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_system_write_alarm");
|
|
|
|
if (count > sizeof(alarm_string) - 1)
|
|
return_VALUE(-EINVAL);
|
|
|
|
if (copy_from_user(alarm_string, buffer, count))
|
|
return_VALUE(-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;
|
|
|
|
if (sec > 59) {
|
|
min += 1;
|
|
sec -= 60;
|
|
}
|
|
if (min > 59) {
|
|
hr += 1;
|
|
min -= 60;
|
|
}
|
|
if (hr > 23) {
|
|
day += 1;
|
|
hr -= 24;
|
|
}
|
|
if (day > 31) {
|
|
mo += 1;
|
|
day -= 31;
|
|
}
|
|
if (mo > 12) {
|
|
yr += 1;
|
|
mo -= 12;
|
|
}
|
|
|
|
spin_lock_irq(&rtc_lock);
|
|
|
|
rtc_control = CMOS_READ(RTC_CONTROL);
|
|
if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
|
|
BIN_TO_BCD(yr);
|
|
BIN_TO_BCD(mo);
|
|
BIN_TO_BCD(day);
|
|
BIN_TO_BCD(hr);
|
|
BIN_TO_BCD(min);
|
|
BIN_TO_BCD(sec);
|
|
}
|
|
|
|
if (adjust) {
|
|
yr += CMOS_READ(RTC_YEAR);
|
|
mo += CMOS_READ(RTC_MONTH);
|
|
day += CMOS_READ(RTC_DAY_OF_MONTH);
|
|
hr += CMOS_READ(RTC_HOURS);
|
|
min += CMOS_READ(RTC_MINUTES);
|
|
sec += CMOS_READ(RTC_SECONDS);
|
|
}
|
|
|
|
spin_unlock_irq(&rtc_lock);
|
|
|
|
if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
|
|
BCD_TO_BIN(yr);
|
|
BCD_TO_BIN(mo);
|
|
BCD_TO_BIN(day);
|
|
BCD_TO_BIN(hr);
|
|
BCD_TO_BIN(min);
|
|
BCD_TO_BIN(sec);
|
|
}
|
|
|
|
if (sec > 59) {
|
|
min++;
|
|
sec -= 60;
|
|
}
|
|
if (min > 59) {
|
|
hr++;
|
|
min -= 60;
|
|
}
|
|
if (hr > 23) {
|
|
day++;
|
|
hr -= 24;
|
|
}
|
|
if (day > 31) {
|
|
mo++;
|
|
day -= 31;
|
|
}
|
|
if (mo > 12) {
|
|
yr++;
|
|
mo -= 12;
|
|
}
|
|
if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
|
|
BIN_TO_BCD(yr);
|
|
BIN_TO_BCD(mo);
|
|
BIN_TO_BCD(day);
|
|
BIN_TO_BCD(hr);
|
|
BIN_TO_BCD(min);
|
|
BIN_TO_BCD(sec);
|
|
}
|
|
|
|
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_WRITE(hr, RTC_HOURS_ALARM);
|
|
CMOS_WRITE(min, RTC_MINUTES_ALARM);
|
|
CMOS_WRITE(sec, RTC_SECONDS_ALARM);
|
|
|
|
/*
|
|
* 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_alrm)
|
|
CMOS_WRITE(day, acpi_gbl_FADT->day_alrm);
|
|
if (acpi_gbl_FADT->mon_alrm)
|
|
CMOS_WRITE(mo, acpi_gbl_FADT->mon_alrm);
|
|
if (acpi_gbl_FADT->century)
|
|
CMOS_WRITE(yr/100, acpi_gbl_FADT->century);
|
|
/* 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_VALUE(result ? result : count);
|
|
}
|
|
|
|
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 Sleep state Status\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);
|
|
|
|
if (!dev->wakeup.flags.valid)
|
|
continue;
|
|
spin_unlock(&acpi_device_lock);
|
|
if (dev->wakeup.flags.run_wake)
|
|
seq_printf(seq, "%4s %4d %8s\n",
|
|
dev->pnp.bus_id, (u32) dev->wakeup.sleep_state,
|
|
dev->wakeup.state.enabled ? "*enabled" : "*disabled");
|
|
else
|
|
seq_printf(seq, "%4s %4d %8s\n",
|
|
dev->pnp.bus_id, (u32) dev->wakeup.sleep_state,
|
|
dev->wakeup.state.enabled ? "enabled" : "disabled");
|
|
spin_lock(&acpi_device_lock);
|
|
}
|
|
spin_unlock(&acpi_device_lock);
|
|
return 0;
|
|
}
|
|
|
|
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) {
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
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 struct file_operations acpi_system_wakeup_device_fops = {
|
|
.open = acpi_system_wakeup_device_open_fs,
|
|
.read = seq_read,
|
|
.write = acpi_system_write_wakeup_device,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static struct file_operations acpi_system_sleep_fops = {
|
|
.open = acpi_system_sleep_open_fs,
|
|
.read = seq_read,
|
|
.write = acpi_system_write_sleep,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static struct file_operations acpi_system_alarm_fops = {
|
|
.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;
|
|
}
|
|
|
|
static int acpi_sleep_proc_init(void)
|
|
{
|
|
struct proc_dir_entry *entry = NULL;
|
|
|
|
if (acpi_disabled)
|
|
return 0;
|
|
|
|
/* 'sleep' [R/W]*/
|
|
entry = create_proc_entry(ACPI_SYSTEM_FILE_SLEEP,
|
|
S_IFREG|S_IRUGO|S_IWUSR, acpi_root_dir);
|
|
if (entry)
|
|
entry->proc_fops = &acpi_system_sleep_fops;
|
|
|
|
/* 'alarm' [R/W] */
|
|
entry = create_proc_entry(ACPI_SYSTEM_FILE_ALARM,
|
|
S_IFREG|S_IRUGO|S_IWUSR, acpi_root_dir);
|
|
if (entry)
|
|
entry->proc_fops = &acpi_system_alarm_fops;
|
|
|
|
/* 'wakeup device' [R/W]*/
|
|
entry = create_proc_entry(ACPI_SYSTEM_FILE_WAKEUP_DEVICE,
|
|
S_IFREG|S_IRUGO|S_IWUSR, acpi_root_dir);
|
|
if (entry)
|
|
entry->proc_fops = &acpi_system_wakeup_device_fops;
|
|
|
|
acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, NULL);
|
|
return 0;
|
|
}
|
|
|
|
late_initcall(acpi_sleep_proc_init);
|