Commit-ID: c2c21e9bb17549e8add4ff76931bcec2e2d3ad48
Gitweb: http://git.kernel.org/tip/c2c21e9bb17549e8add4ff76931bcec2e2d3ad48
Author: Daniel Drake <dsd@xxxxxxxxxx>
AuthorDate: Wed, 18 Apr 2012 23:34:02 +0100
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 7 May 2012 15:02:26 +0200
x86/olpc/xo1/sci: Report RTC wakeup events
When the system is woken due to a RTC event, report the wakeup
event on the relevant rtc device (if it can be found).
Signed-off-by: Daniel Drake <dsd@xxxxxxxxxx>
Cc: dilinger@xxxxxxxxxx
Cc: pgf@xxxxxxxxxx
Link: http://lkml.kernel.org/r/20120418223402.D73249D401E@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/platform/olpc/olpc-xo1-sci.c | 17 +++++++++++++++--
include/linux/cs5535.h | 1 +
2 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/arch/x86/platform/olpc/olpc-xo1-sci.c b/arch/x86/platform/olpc/olpc-xo1-sci.c
index 4b93ff4..04b8c73 100644
--- a/arch/x86/platform/olpc/olpc-xo1-sci.c
+++ b/arch/x86/platform/olpc/olpc-xo1-sci.c
@@ -236,6 +236,18 @@ static irqreturn_t xo1_sci_intr(int irq, void *dev_id)
pm_wakeup_event(&power_button_idev->dev, 0);
}
+ if ((sts & (CS5536_RTC_FLAG | CS5536_WAK_FLAG)) ==
+ (CS5536_RTC_FLAG | CS5536_WAK_FLAG)) {
+ /* When the system is woken by the RTC alarm, report the
+ * event on the rtc device. */
+ struct device *rtc = bus_find_device_by_name(
+ &platform_bus_type, NULL, "rtc_cmos");
+ if (rtc) {
+ pm_wakeup_event(rtc, 0);
+ put_device(rtc);
+ }
+ }
+
if (gpe & CS5536_GPIOM7_PME_FLAG) { /* EC GPIO */
cs5535_gpio_set(OLPC_GPIO_ECSCI, GPIO_NEGATIVE_EDGE_STS);
schedule_work(&sci_work);
@@ -326,9 +338,10 @@ static int __devinit setup_sci_interrupt(struct platform_device *pdev)
outb(lo, CS5536_PIC_INT_SEL2);
}
- /* Enable SCI from power button, and clear pending interrupts */
+ /* Enable interesting SCI events, and clear pending interrupts */
sts = inl(acpi_base + CS5536_PM1_STS);
- outl((CS5536_PM_PWRBTN << 16) | 0xffff, acpi_base + CS5536_PM1_STS);
+ outl(((CS5536_PM_PWRBTN | CS5536_PM_RTC) << 16) | 0xffff,
+ acpi_base + CS5536_PM1_STS);
r = request_irq(sci_irq, xo1_sci_intr, 0, DRV_NAME, pdev);
if (r)
diff --git a/include/linux/cs5535.h b/include/linux/cs5535.h
index c077aec..cfe8323 100644
--- a/include/linux/cs5535.h
+++ b/include/linux/cs5535.h
@@ -95,6 +95,7 @@ static inline int cs5535_pic_unreqz_select_high(unsigned int group,
/* CS5536_PM1_STS bits */
#define CS5536_WAK_FLAG (1 << 15)
+#define CS5536_RTC_FLAG (1 << 10)
#define CS5536_PWRBTN_FLAG (1 << 8)
/* CS5536_PM1_EN bits */
--
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