diff options
Diffstat (limited to 'drivers/hwmon/lis3lv02d_i2c.c')
| -rw-r--r-- | drivers/hwmon/lis3lv02d_i2c.c | 54 |
1 files changed, 41 insertions, 13 deletions
diff --git a/drivers/hwmon/lis3lv02d_i2c.c b/drivers/hwmon/lis3lv02d_i2c.c index c6f3f3411276..d52095603e03 100644 --- a/drivers/hwmon/lis3lv02d_i2c.c +++ b/drivers/hwmon/lis3lv02d_i2c.c @@ -29,6 +29,7 @@ #include <linux/init.h> #include <linux/err.h> #include <linux/i2c.h> +#include <linux/pm_runtime.h> #include "lis3lv02d.h" #define DRV_NAME "lis3lv02d_i2c" @@ -94,6 +95,7 @@ static int __devinit lis3lv02d_i2c_probe(struct i2c_client *client, lis3_dev.write = lis3_i2c_write; lis3_dev.irq = client->irq; lis3_dev.ac = lis3lv02d_axis_map; + lis3_dev.pm_dev = &client->dev; i2c_set_clientdata(client, &lis3_dev); ret = lis3lv02d_init_device(&lis3_dev); @@ -103,21 +105,20 @@ fail: static int __devexit lis3lv02d_i2c_remove(struct i2c_client *client) { - struct lis3lv02d *lis3 = i2c_get_clientdata(client); struct lis3lv02d_platform_data *pdata = client->dev.platform_data; if (pdata && pdata->release_resources) pdata->release_resources(); lis3lv02d_joystick_disable(); - lis3lv02d_poweroff(lis3); return lis3lv02d_remove_fs(&lis3_dev); } #ifdef CONFIG_PM -static int lis3lv02d_i2c_suspend(struct i2c_client *client, pm_message_t mesg) +static int lis3lv02d_i2c_suspend(struct device *dev) { + struct i2c_client *client = container_of(dev, struct i2c_client, dev); struct lis3lv02d *lis3 = i2c_get_clientdata(client); if (!lis3->pdata || !lis3->pdata->wakeup_flags) @@ -125,18 +126,21 @@ static int lis3lv02d_i2c_suspend(struct i2c_client *client, pm_message_t mesg) return 0; } -static int lis3lv02d_i2c_resume(struct i2c_client *client) +static int lis3lv02d_i2c_resume(struct device *dev) { + struct i2c_client *client = container_of(dev, struct i2c_client, dev); struct lis3lv02d *lis3 = i2c_get_clientdata(client); - if (!lis3->pdata || !lis3->pdata->wakeup_flags) + /* + * pm_runtime documentation says that devices should always + * be powered on at resume. Pm_runtime turns them off after system + * wide resume is complete. + */ + if (!lis3->pdata || !lis3->pdata->wakeup_flags || + pm_runtime_suspended(dev)) lis3lv02d_poweron(lis3); - return 0; -} -static void lis3lv02d_i2c_shutdown(struct i2c_client *client) -{ - lis3lv02d_i2c_suspend(client, PMSG_SUSPEND); + return 0; } #else #define lis3lv02d_i2c_suspend NULL @@ -144,6 +148,24 @@ static void lis3lv02d_i2c_shutdown(struct i2c_client *client) #define lis3lv02d_i2c_shutdown NULL #endif +static int lis3_i2c_runtime_suspend(struct device *dev) +{ + struct i2c_client *client = container_of(dev, struct i2c_client, dev); + struct lis3lv02d *lis3 = i2c_get_clientdata(client); + + lis3lv02d_poweroff(lis3); + return 0; +} + +static int lis3_i2c_runtime_resume(struct device *dev) +{ + struct i2c_client *client = container_of(dev, struct i2c_client, dev); + struct lis3lv02d *lis3 = i2c_get_clientdata(client); + + lis3lv02d_poweron(lis3); + return 0; +} + static const struct i2c_device_id lis3lv02d_id[] = { {"lis3lv02d", 0 }, {} @@ -151,14 +173,20 @@ static const struct i2c_device_id lis3lv02d_id[] = { MODULE_DEVICE_TABLE(i2c, lis3lv02d_id); +static const struct dev_pm_ops lis3_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(lis3lv02d_i2c_suspend, + lis3lv02d_i2c_resume) + SET_RUNTIME_PM_OPS(lis3_i2c_runtime_suspend, + lis3_i2c_runtime_resume, + NULL) +}; + static struct i2c_driver lis3lv02d_i2c_driver = { .driver = { .name = DRV_NAME, .owner = THIS_MODULE, + .pm = &lis3_pm_ops, }, - .suspend = lis3lv02d_i2c_suspend, - .shutdown = lis3lv02d_i2c_shutdown, - .resume = lis3lv02d_i2c_resume, .probe = lis3lv02d_i2c_probe, .remove = __devexit_p(lis3lv02d_i2c_remove), .id_table = lis3lv02d_id, |