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From: Tomeu Vizoso <tomeu.vizoso@collabora.com>
To: linux-pm@vger.kernel.org
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/6] Input: Implement dev_pm_ops.prepare()
Date: Tue, 31 Mar 2015 18:14:47 +0200	[thread overview]
Message-ID: <1427818501-10201-4-git-send-email-tomeu.vizoso@collabora.com> (raw)
In-Reply-To: <1427818501-10201-1-git-send-email-tomeu.vizoso@collabora.com>

Have it return 1 in both input_dev_type and input_class (for evdev
handlers) so that input devices that are runtime-suspended won't be
suspended when the system goes to a sleep state. This can make resume
times considerably shorter because these devices don't need to be
resumed when the system is awaken.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
 drivers/input/input.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index cc357f1..cbbd391 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1741,12 +1741,22 @@ static int input_dev_poweroff(struct device *dev)
 	return 0;
 }
 
+static int input_dev_prepare(struct device *dev)
+{
+	return 1;
+}
+
 static const struct dev_pm_ops input_dev_pm_ops = {
 	.suspend	= input_dev_suspend,
 	.resume		= input_dev_resume,
 	.freeze		= input_dev_freeze,
 	.poweroff	= input_dev_poweroff,
 	.restore	= input_dev_resume,
+	.prepare	= input_dev_prepare,
+};
+
+static const struct dev_pm_ops input_class_pm_ops = {
+	.prepare	= input_dev_prepare,
 };
 #endif /* CONFIG_PM */
 
@@ -1767,6 +1777,9 @@ static char *input_devnode(struct device *dev, umode_t *mode)
 struct class input_class = {
 	.name		= "input",
 	.devnode	= input_devnode,
+#ifdef CONFIG_PM_SLEEP
+	.pm		= &input_class_pm_ops,
+#endif
 };
 EXPORT_SYMBOL_GPL(input_class);
 
-- 
2.3.4


  parent reply	other threads:[~2015-03-31 16:15 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-31 16:14 [PATCH 0/6] Allow UVC devices to remain runtime-suspended when sleeping Tomeu Vizoso
2015-03-31 16:14 ` [PATCH 1/6] [media] uvcvideo: Enable runtime PM of descendant devices Tomeu Vizoso
2015-03-31 16:14 ` [PATCH 2/6] [media] v4l2-core: Implement dev_pm_ops.prepare() Tomeu Vizoso
2015-03-31 16:14 ` Tomeu Vizoso [this message]
2015-03-31 16:14 ` [PATCH 4/6] [media] media-devnode: Implement dev_pm_ops.prepare callback Tomeu Vizoso
2015-03-31 16:14 ` [PATCH 5/6] Input: evdev - Enable runtime PM of the evdev input handler Tomeu Vizoso
2015-03-31 20:31   ` Dmitry Torokhov
2015-04-03 13:03     ` Tomeu Vizoso
2015-03-31 16:14 ` [PATCH 6/6] USB / PM: Allow USB devices to remain runtime-suspended when sleeping Tomeu Vizoso
2015-03-31 17:09   ` Alan Stern
2015-04-01 12:40     ` Oliver Neukum
2015-04-01 14:01       ` Alan Stern
2015-04-01 14:26         ` Oliver Neukum
2015-04-01 14:36           ` Alan Stern
2015-04-03 13:05     ` Tomeu Vizoso

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