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authorAaron Lu <aaron.lu@intel.com>2013-01-25 14:29:35 +0800
committerJeff Garzik <jgarzik@redhat.com>2013-01-25 15:33:33 -0500
commita7ff60dbe0858496531c75b1544666c099a2b200 (patch)
tree2bb707b6682c398fbe35db8d3b775272561ddab0 /drivers/ata/libata-core.c
parente175435ed281d06ffd56d4edc8a2dd56f8672f07 (diff)
downloadlinux-linaro-stable-a7ff60dbe0858496531c75b1544666c099a2b200.tar.gz
[libata] pm: differentiate system and runtime pm for ata port
We need to do different things for system PM and runtime PM, e.g. we do not need to enable runtime wake for ZPODD when we are doing system suspend, etc. Currently, we use PMSG_SUSPEND for both system suspend and runtime suspend and PMSG_ON for both system resume and runtime resume. Change this by using PMSG_AUTO_SUSPEND for runtime suspend and PMSG_AUTO_RESUME for runtime resume. And since PMSG_ON means no transition, it is changed to PMSG_RESUME for ata port's system resume. The ata_acpi_set_state is modified accordingly, and the sata case and pata case is seperated for easy reading. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c29
1 files changed, 20 insertions, 9 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 4b6fb48eb831..b7c972dc8b9b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5344,7 +5344,7 @@ static int __ata_port_suspend_common(struct ata_port *ap, pm_message_t mesg, int
*
* http://thread.gmane.org/gmane.linux.ide/46764
*/
- if (mesg.event == PM_EVENT_SUSPEND)
+ if (mesg.event & PM_EVENT_SUSPEND)
ehi_flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_NO_RECOVERY;
rc = ata_port_request_pm(ap, mesg, 0, ehi_flags, async);
@@ -5382,27 +5382,28 @@ static int ata_port_poweroff(struct device *dev)
return ata_port_suspend_common(dev, PMSG_HIBERNATE);
}
-static int __ata_port_resume_common(struct ata_port *ap, int *async)
+static int __ata_port_resume_common(struct ata_port *ap, pm_message_t mesg,
+ int *async)
{
int rc;
- rc = ata_port_request_pm(ap, PMSG_ON, ATA_EH_RESET,
+ rc = ata_port_request_pm(ap, mesg, ATA_EH_RESET,
ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, async);
return rc;
}
-static int ata_port_resume_common(struct device *dev)
+static int ata_port_resume_common(struct device *dev, pm_message_t mesg)
{
struct ata_port *ap = to_ata_port(dev);
- return __ata_port_resume_common(ap, NULL);
+ return __ata_port_resume_common(ap, mesg, NULL);
}
static int ata_port_resume(struct device *dev)
{
int rc;
- rc = ata_port_resume_common(dev);
+ rc = ata_port_resume_common(dev, PMSG_RESUME);
if (!rc) {
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
@@ -5436,6 +5437,16 @@ static int ata_port_runtime_idle(struct device *dev)
return pm_runtime_suspend(dev);
}
+static int ata_port_runtime_suspend(struct device *dev)
+{
+ return ata_port_suspend_common(dev, PMSG_AUTO_SUSPEND);
+}
+
+static int ata_port_runtime_resume(struct device *dev)
+{
+ return ata_port_resume_common(dev, PMSG_AUTO_RESUME);
+}
+
static const struct dev_pm_ops ata_port_pm_ops = {
.suspend = ata_port_suspend,
.resume = ata_port_resume,
@@ -5444,8 +5455,8 @@ static const struct dev_pm_ops ata_port_pm_ops = {
.poweroff = ata_port_poweroff,
.restore = ata_port_resume,
- .runtime_suspend = ata_port_suspend,
- .runtime_resume = ata_port_resume_common,
+ .runtime_suspend = ata_port_runtime_suspend,
+ .runtime_resume = ata_port_runtime_resume,
.runtime_idle = ata_port_runtime_idle,
};
@@ -5462,7 +5473,7 @@ EXPORT_SYMBOL_GPL(ata_sas_port_async_suspend);
int ata_sas_port_async_resume(struct ata_port *ap, int *async)
{
- return __ata_port_resume_common(ap, async);
+ return __ata_port_resume_common(ap, PMSG_RESUME, async);
}
EXPORT_SYMBOL_GPL(ata_sas_port_async_resume);