lkml.org 
[lkml]   [2010]   [Dec]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 8/8] mfd/tc3589x: add suspend/resume support
Date
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
---
drivers/mfd/tc3589x.c | 37 +++++++++++++++++++++++++++++++++++++
1 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c
index f000d2e..2baa41c 100644
--- a/drivers/mfd/tc3589x.c
+++ b/drivers/mfd/tc3589x.c
@@ -14,6 +14,9 @@
#include <linux/mfd/core.h>
#include <linux/mfd/tc3589x.h>

+#define TC3589x_CLKMODE_MODCTL_SLEEP 0x0
+#define TC3589x_CLKMODE_MODCTL_OPERATION (1 << 0)
+
/**
* tc3589x_reg_read() - read a single TC3589x register
* @tc3589x: Device to read from
@@ -339,6 +342,37 @@ static int __devexit tc3589x_remove(struct i2c_client *client)
return 0;
}

+static int tc3589x_suspend(struct device *dev)
+{
+ struct tc3589x *tc3589x = dev_get_drvdata(dev);
+ struct i2c_client *client = tc3589x->i2c;
+ int ret = 0;
+
+ /* put the system to sleep mode */
+ if (!device_may_wakeup(&client->dev))
+ ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE,
+ TC3589x_CLKMODE_MODCTL_SLEEP);
+
+ return ret;
+}
+
+static int tc3589x_resume(struct device *dev)
+{
+ struct tc3589x *tc3589x = dev_get_drvdata(dev);
+ struct i2c_client *client = tc3589x->i2c;
+ int ret = 0;
+
+ /* enable the system into operation */
+ if (!device_may_wakeup(&client->dev))
+ ret = tc3589x_reg_write(tc3589x, TC3589x_CLKMODE,
+ TC3589x_CLKMODE_MODCTL_OPERATION);
+
+ return ret;
+}
+
+static const SIMPLE_DEV_PM_OPS(tc3589x_dev_pm_ops, tc3589x_suspend,
+ tc3589x_resume);
+
static const struct i2c_device_id tc3589x_id[] = {
{ "tc3589x", 24 },
{ }
@@ -348,6 +382,9 @@ MODULE_DEVICE_TABLE(i2c, tc3589x_id);
static struct i2c_driver tc3589x_driver = {
.driver.name = "tc3589x",
.driver.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .driver.pm = &tc3589x_dev_pm_ops,
+#endif
.probe = tc3589x_probe,
.remove = __devexit_p(tc3589x_remove),
.id_table = tc3589x_id,
--
1.7.2.dirty


\
 
 \ /
  Last update: 2010-12-13 05:07    [W:0.062 / U:0.168 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site