@@ -622,6 +622,36 @@ static int davinci_i2c_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM
+static int davinci_i2c_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct davinci_i2c_dev *dev = platform_get_drvdata(pdev);
+
+ /* put I2C into reset */
+ davinci_i2c_reset_ctrl(dev, 0);
+
+ clk_disable(dev->clk);
+
+ return 0;
+}
+
+static int davinci_i2c_resume(struct platform_device *pdev)
+{
+ struct davinci_i2c_dev *dev = platform_get_drvdata(pdev);
+
+ clk_enable(dev->clk);
+
+ /* take I2C out of reset */
+ davinci_i2c_reset_ctrl(dev, 1);
+
+ return 0;
+}
+
+#else
+#define davinci_i2c_suspend NULL
+#define davinci_i2c_resume NULL
+#endif
+
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:i2c_davinci");
@@ -632,6 +662,8 @@ static struct platform_driver davinci_i2c_driver = {
.name = "i2c_davinci",
.owner = THIS_MODULE,
},
+ .suspend = davinci_i2c_suspend,
+ .resume = davinci_i2c_resume,
};
/* I2C may be needed to bring up other drivers */