From: Anson Huang <b20788@freescale.com>
To: dmitry.torokhov@gmail.com, sachin.kamat@linaro.org
Cc: linux-input@vger.kernel.org
Subject: [PATCH] Input: gpio_keys: support wakeup system from freeze mode
Date: Mon, 23 Dec 2013 13:21:20 -0500 [thread overview]
Message-ID: <1387822880-30382-1-git-send-email-b20788@freescale.com> (raw)
For "freeze" mode of suspend, cpu will go into idle and
those wakeup sources' irq should NOT be disabled during
devices suspend, so we need to add IRQF_NO_SUSPEND flag
for those wakeup sources.
Steps to test this patch:
1. echo freeze > /sys/power/state;
2. press gpio key which has wakeup function, then system
will resume.
Signed-off-by: Anson Huang <b20788@freescale.com>
---
drivers/input/keyboard/gpio_keys.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 2db1324..aadb1db 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -473,6 +473,8 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
isr = gpio_keys_gpio_isr;
irqflags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
+ if (bdata->button->wakeup)
+ irqflags |= IRQF_NO_SUSPEND;
} else {
if (!button->irq) {
--
1.7.9.5
next reply other threads:[~2013-12-23 6:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-23 18:21 Anson Huang [this message]
2013-12-24 0:30 ` [PATCH] Input: gpio_keys: support wakeup system from freeze mode Dmitry Torokhov
2013-12-24 2:29 ` Anson.Huang
2013-12-26 23:35 ` Dmitry Torokhov
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=1387822880-30382-1-git-send-email-b20788@freescale.com \
--to=b20788@freescale.com \
--cc=dmitry.torokhov@gmail.com \
--cc=linux-input@vger.kernel.org \
--cc=sachin.kamat@linaro.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).