lis3: add power management functions

[safe/jmp/linux-2.6] / drivers / hwmon / lis3lv02d_spi.c

diff --git a/drivers/hwmon/lis3lv02d_spi.c b/drivers/hwmon/lis3lv02d_spi.c
index 3827ff0..2bc8493 100644 (file)
--- a/drivers/hwmon/lis3lv02d_spi.c
+++ b/drivers/hwmon/lis3lv02d_spi.c
@@ -87,6 +87,32 @@ static int __devexit lis302dl_spi_remove(struct spi_device *spi)
        return 0;
 }
 
+#ifdef CONFIG_PM
+static int lis3lv02d_spi_suspend(struct spi_device *spi, pm_message_t mesg)
+{
+       struct lis3lv02d *lis3 = spi_get_drvdata(spi);
+
+       if (!lis3->pdata->wakeup_flags)
+               lis3lv02d_poweroff(&lis3_dev);
+
+       return 0;
+}
+
+static int lis3lv02d_spi_resume(struct spi_device *spi)
+{
+       struct lis3lv02d *lis3 = spi_get_drvdata(spi);
+
+       if (!lis3->pdata->wakeup_flags)
+               lis3lv02d_poweron(lis3);
+
+       return 0;
+}
+
+#else
+#define lis3lv02d_spi_suspend  NULL
+#define lis3lv02d_spi_resume   NULL
+#endif
+
 static struct spi_driver lis302dl_spi_driver = {
        .driver  = {
                .name   = DRV_NAME,
@@ -94,6 +120,8 @@ static struct spi_driver lis302dl_spi_driver = {
        },
        .probe  = lis302dl_spi_probe,
        .remove = __devexit_p(lis302dl_spi_remove),
+       .suspend = lis3lv02d_spi_suspend,
+       .resume  = lis3lv02d_spi_resume,
 };
 
 static int __init lis302dl_init(void)