Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 509 insertions, 0 deletions

diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
new file mode 100644
index 000000000000..fd7c5a0649af
--- /dev/null
+++ b/drivers/acpi/sleep/proc.c
@@ -0,0 +1,509 @@
+#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);