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-rw-r--r--Documentation/power/devices.txt13
-rw-r--r--drivers/ata/ahci.c2
-rw-r--r--drivers/ata/ata_piix.c2
-rw-r--r--drivers/ata/libata-core.c2
-rw-r--r--drivers/ide/ppc/pmac.c4
-rw-r--r--drivers/macintosh/mediabay.c3
-rw-r--r--drivers/pci/pci.c1
-rw-r--r--drivers/scsi/aic7xxx/aic79xx_osm_pci.c2
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm_pci.c2
-rw-r--r--drivers/scsi/mesh.c1
-rw-r--r--drivers/scsi/sd.c3
-rw-r--r--drivers/usb/host/sl811-hcd.c1
-rw-r--r--drivers/usb/host/u132-hcd.c11
-rw-r--r--drivers/video/chipsfb.c2
-rw-r--r--drivers/video/nvidia/nvidia.c2
-rw-r--r--include/linux/pm.h9
-rw-r--r--kernel/power/disk.c4
-rw-r--r--net/rfkill/rfkill.c2
18 files changed, 42 insertions, 24 deletions
diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt
index c53d26361919..461e4f1dbec4 100644
--- a/Documentation/power/devices.txt
+++ b/Documentation/power/devices.txt
@@ -310,9 +310,12 @@ used with suspend-to-disk:
PM_EVENT_SUSPEND -- quiesce the driver and put hardware into a low-power
state. When used with system sleep states like "suspend-to-RAM" or
"standby", the upcoming resume() call will often be able to rely on
- state kept in hardware, or issue system wakeup events. When used
- instead with suspend-to-disk, few devices support this capability;
- most are completely powered off.
+ state kept in hardware, or issue system wakeup events.
+
+ PM_EVENT_HIBERNATE -- Put hardware into a low-power state and enable wakeup
+ events as appropriate. It is only used with hibernation
+ (suspend-to-disk) and few devices are able to wake up the system from
+ this state; most are completely powered off.
PM_EVENT_FREEZE -- quiesce the driver, but don't necessarily change into
any low power mode. A system snapshot is about to be taken, often
@@ -329,8 +332,8 @@ used with suspend-to-disk:
wakeup events nor DMA are allowed.
To enter "standby" (ACPI S1) or "Suspend to RAM" (STR, ACPI S3) states, or
-the similarly named APM states, only PM_EVENT_SUSPEND is used; for "Suspend
-to Disk" (STD, hibernate, ACPI S4), all of those event codes are used.
+the similarly named APM states, only PM_EVENT_SUSPEND is used; the other event
+codes are used for hibernation ("Suspend to Disk", STD, ACPI S4).
There's also PM_EVENT_ON, a value which never appears as a suspend event
but is sometimes used to record the "not suspended" device state.
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 3c06e457b4dc..6dd12f7019a0 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1932,7 +1932,7 @@ static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
u32 ctl;
- if (mesg.event == PM_EVENT_SUSPEND) {
+ if (mesg.event & PM_EVENT_SLEEP) {
/* AHCI spec rev1.1 section 8.3.3:
* Software must disable interrupts prior to requesting a
* transition of the HBA to D3 state.
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 752e7d2f3b2f..fae8404254c0 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1339,7 +1339,7 @@ static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
* cycles and power trying to do something to the sleeping
* beauty.
*/
- if (piix_broken_suspend() && mesg.event == PM_EVENT_SUSPEND) {
+ if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
pci_save_state(pdev);
/* mark its power state as "unknown", since we don't
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 60d1bb556973..4cf8662df99e 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -7368,7 +7368,7 @@ void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg)
pci_save_state(pdev);
pci_disable_device(pdev);
- if (mesg.event == PM_EVENT_SUSPEND)
+ if (mesg.event & PM_EVENT_SLEEP)
pci_set_power_state(pdev, PCI_D3hot);
}
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 12ac3bfb4f9a..78c9eeb85634 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1254,7 +1254,7 @@ pmac_ide_macio_suspend(struct macio_dev *mdev, pm_message_t mesg)
int rc = 0;
if (mesg.event != mdev->ofdev.dev.power.power_state.event
- && mesg.event == PM_EVENT_SUSPEND) {
+ && (mesg.event & PM_EVENT_SLEEP)) {
rc = pmac_ide_do_suspend(hwif);
if (rc == 0)
mdev->ofdev.dev.power.power_state = mesg;
@@ -1364,7 +1364,7 @@ pmac_ide_pci_suspend(struct pci_dev *pdev, pm_message_t mesg)
int rc = 0;
if (mesg.event != pdev->dev.power.power_state.event
- && mesg.event == PM_EVENT_SUSPEND) {
+ && (mesg.event & PM_EVENT_SLEEP)) {
rc = pmac_ide_do_suspend(hwif);
if (rc == 0)
pdev->dev.power.power_state = mesg;
diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
index 51a112815f46..bd8a1d14b45d 100644
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -698,7 +698,8 @@ static int media_bay_suspend(struct macio_dev *mdev, pm_message_t state)
{
struct media_bay_info *bay = macio_get_drvdata(mdev);
- if (state.event != mdev->ofdev.dev.power.power_state.event && state.event == PM_EVENT_SUSPEND) {
+ if (state.event != mdev->ofdev.dev.power.power_state.event
+ && (state.event & PM_EVENT_SLEEP)) {
down(&bay->lock);
bay->sleeping = 1;
set_mb_power(bay, 0);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ae3df46eaabf..183fddaa38b7 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -554,6 +554,7 @@ pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state)
case PM_EVENT_PRETHAW:
/* REVISIT both freeze and pre-thaw "should" use D0 */
case PM_EVENT_SUSPEND:
+ case PM_EVENT_HIBERNATE:
return PCI_D3hot;
default:
printk("Unrecognized suspend event %d\n", state.event);
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
index 4150c8a8fdc2..dfaaae5e73ae 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
@@ -89,7 +89,7 @@ ahd_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg)
pci_save_state(pdev);
pci_disable_device(pdev);
- if (mesg.event == PM_EVENT_SUSPEND)
+ if (mesg.event & PM_EVENT_SLEEP)
pci_set_power_state(pdev, PCI_D3hot);
return rc;
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index dd6e21d6f1dd..3d3eaef65fb3 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -134,7 +134,7 @@ ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg)
pci_save_state(pdev);
pci_disable_device(pdev);
- if (mesg.event == PM_EVENT_SUSPEND)
+ if (mesg.event & PM_EVENT_SLEEP)
pci_set_power_state(pdev, PCI_D3hot);
return rc;
diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c
index 651d09b08f2a..fd63b06d9ef1 100644
--- a/drivers/scsi/mesh.c
+++ b/drivers/scsi/mesh.c
@@ -1759,6 +1759,7 @@ static int mesh_suspend(struct macio_dev *mdev, pm_message_t mesg)
switch (mesg.event) {
case PM_EVENT_SUSPEND:
+ case PM_EVENT_HIBERNATE:
case PM_EVENT_FREEZE:
break;
default:
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 37df8bbe7f46..7aee64dbfbeb 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1835,8 +1835,7 @@ static int sd_suspend(struct device *dev, pm_message_t mesg)
goto done;
}
- if (mesg.event == PM_EVENT_SUSPEND &&
- sdkp->device->manage_start_stop) {
+ if ((mesg.event & PM_EVENT_SLEEP) && sdkp->device->manage_start_stop) {
sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n");
ret = sd_start_stop_device(sdkp, 0);
}
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index ba370c56172c..59be276ccd9d 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -1766,6 +1766,7 @@ sl811h_suspend(struct platform_device *dev, pm_message_t state)
retval = sl811h_bus_suspend(hcd);
break;
case PM_EVENT_SUSPEND:
+ case PM_EVENT_HIBERNATE:
case PM_EVENT_PRETHAW: /* explicitly discard hw state */
port_power(sl811, 0);
break;
diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c
index ac283b09a63f..6fca06961559 100644
--- a/drivers/usb/host/u132-hcd.c
+++ b/drivers/usb/host/u132-hcd.c
@@ -3214,14 +3214,19 @@ static int u132_suspend(struct platform_device *pdev, pm_message_t state)
return -ESHUTDOWN;
} else {
int retval = 0;
- if (state.event == PM_EVENT_FREEZE) {
+
+ switch (state.event) {
+ case PM_EVENT_FREEZE:
retval = u132_bus_suspend(hcd);
- } else if (state.event == PM_EVENT_SUSPEND) {
+ break;
+ case PM_EVENT_SUSPEND:
+ case PM_EVENT_HIBERNATE:
int ports = MAX_U132_PORTS;
while (ports-- > 0) {
port_power(u132, ports, 0);
}
- }
+ break;
+ }
if (retval == 0)
pdev->dev.power.power_state = state;
return retval;
diff --git a/drivers/video/chipsfb.c b/drivers/video/chipsfb.c
index 6796ba62c3c6..777389c40988 100644
--- a/drivers/video/chipsfb.c
+++ b/drivers/video/chipsfb.c
@@ -459,7 +459,7 @@ static int chipsfb_pci_suspend(struct pci_dev *pdev, pm_message_t state)
if (state.event == pdev->dev.power.power_state.event)
return 0;
- if (state.event != PM_EVENT_SUSPEND)
+ if (!(state.event & PM_EVENT_SLEEP))
goto done;
acquire_console_sem();
diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c
index 74517b1b26a6..596652d2831f 100644
--- a/drivers/video/nvidia/nvidia.c
+++ b/drivers/video/nvidia/nvidia.c
@@ -1066,7 +1066,7 @@ static int nvidiafb_suspend(struct pci_dev *dev, pm_message_t mesg)
acquire_console_sem();
par->pm_state = mesg.event;
- if (mesg.event == PM_EVENT_SUSPEND) {
+ if (mesg.event & PM_EVENT_SLEEP) {
fb_set_suspend(info, 1);
nvidiafb_blank(FB_BLANK_POWERDOWN, info);
nvidia_write_regs(par, &par->SavedReg);
diff --git a/include/linux/pm.h b/include/linux/pm.h
index eccf59ea2a77..015b735811b4 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -143,6 +143,9 @@ typedef struct pm_message {
* the upcoming system state (such as PCI_D3hot), and enable
* wakeup events as appropriate.
*
+ * HIBERNATE Enter a low power device state appropriate for the hibernation
+ * state (eg. ACPI S4) and enable wakeup events as appropriate.
+ *
* FREEZE Quiesce operations so that a consistent image can be saved;
* but do NOT otherwise enter a low power device state, and do
* NOT emit system wakeup events.
@@ -166,11 +169,15 @@ typedef struct pm_message {
#define PM_EVENT_ON 0
#define PM_EVENT_FREEZE 1
#define PM_EVENT_SUSPEND 2
-#define PM_EVENT_PRETHAW 3
+#define PM_EVENT_HIBERNATE 4
+#define PM_EVENT_PRETHAW 8
+
+#define PM_EVENT_SLEEP (PM_EVENT_SUSPEND | PM_EVENT_HIBERNATE)
#define PMSG_FREEZE ((struct pm_message){ .event = PM_EVENT_FREEZE, })
#define PMSG_PRETHAW ((struct pm_message){ .event = PM_EVENT_PRETHAW, })
#define PMSG_SUSPEND ((struct pm_message){ .event = PM_EVENT_SUSPEND, })
+#define PMSG_HIBERNATE ((struct pm_message){ .event = PM_EVENT_HIBERNATE, })
#define PMSG_ON ((struct pm_message){ .event = PM_EVENT_ON, })
struct dev_pm_info {
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 859a8e59773a..14a656cdc652 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -391,7 +391,7 @@ int hibernation_platform_enter(void)
goto Close;
suspend_console();
- error = device_suspend(PMSG_SUSPEND);
+ error = device_suspend(PMSG_HIBERNATE);
if (error)
goto Resume_console;
@@ -404,7 +404,7 @@ int hibernation_platform_enter(void)
goto Finish;
local_irq_disable();
- error = device_power_down(PMSG_SUSPEND);
+ error = device_power_down(PMSG_HIBERNATE);
if (!error) {
hibernation_ops->enter();
/* We should never get here */
diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c
index 1a47f5d1be17..140a0a8c6b02 100644
--- a/net/rfkill/rfkill.c
+++ b/net/rfkill/rfkill.c
@@ -232,7 +232,7 @@ static int rfkill_suspend(struct device *dev, pm_message_t state)
struct rfkill *rfkill = to_rfkill(dev);
if (dev->power.power_state.event != state.event) {
- if (state.event == PM_EVENT_SUSPEND) {
+ if (state.event & PM_EVENT_SLEEP) {
mutex_lock(&rfkill->mutex);
if (rfkill->state == RFKILL_STATE_ON)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 07:43:21 +0000