From: Daniel Drake <dsd@laptop.org>
To: tglx@linutronix.de, x86@kernel.org, mingo@redhat.com, hpa@zytor.com
Cc: linux-kernel@vger.kernel.org, dilinger@queued.net,
pgf@laptop.org, linux-pm@vger.kernel.org
Subject: [PATCH] x86, olpc-xo1-sci: report RTC wakeup events
Date: Wed, 18 Apr 2012 23:34:02 +0100 (BST) [thread overview]
Message-ID: <20120418223402.D73249D401E@zog.reactivated.net> (raw)
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@laptop.org>
---
arch/x86/platform/olpc/olpc-xo1-sci.c | 17 +++++++++++++++--
include/linux/cs5535.h | 1 +
2 files changed, 16 insertions(+), 2 deletions(-)
Depends on earlier patch:
x86, olpc-xo1-sci: Produce wakeup events for buttons and switches
because the code changes in these 2 patches are close to each other.
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 */
--
1.7.7.6
next reply other threads:[~2012-04-18 22:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-18 22:34 Daniel Drake [this message]
2012-05-08 4:20 ` [tip:x86/platform] x86/olpc/xo1/sci: Report RTC wakeup events tip-bot for Daniel Drake
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120418223402.D73249D401E@zog.reactivated.net \
--to=dsd@laptop.org \
--cc=dilinger@queued.net \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=pgf@laptop.org \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).