diff options
Diffstat (limited to 'drivers/hwmon/lsm303dlhc_a.c')
| -rw-r--r-- | drivers/hwmon/lsm303dlhc_a.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/drivers/hwmon/lsm303dlhc_a.c b/drivers/hwmon/lsm303dlhc_a.c index 2da79affdd1..f855d57eb9f 100644 --- a/drivers/hwmon/lsm303dlhc_a.c +++ b/drivers/hwmon/lsm303dlhc_a.c @@ -16,6 +16,10 @@ #include <linux/lsm303dlh.h> #include <linux/regulator/consumer.h> +#ifdef CONFIG_HAS_EARLYSUSPEND +#include <linux/earlysuspend.h> +#endif + #define WHO_AM_I 0x0F /* lsm303dlhc accelerometer registers */ @@ -77,6 +81,7 @@ struct lsm303dlhc_a_t { * @mode: current mode of operation * @rate: current sampling rate * @shift_adjust: current shift adjust value set according to range + * @early_suspend: early suspend structure * @device_status: device is ON, OFF or SUSPENDED * @id: accelerometer device id */ @@ -87,6 +92,7 @@ struct lsm303dlhc_a_data { struct lsm303dlhc_a_t data; struct lsm303dlh_platform_data pdata; struct regulator *regulator; + struct early_suspend early_suspend; unsigned char range; unsigned char mode; unsigned char rate; @@ -95,6 +101,11 @@ struct lsm303dlhc_a_data { int id; }; +#ifdef CONFIG_HAS_EARLYSUSPEND +static void lsm303dlhc_a_early_suspend(struct early_suspend *data); +static void lsm303dlhc_a_late_resume(struct early_suspend *data); +#endif + static int lsm303dlhc_a_write(struct lsm303dlhc_a_data *ddata, u8 reg, u8 val, char *msg) { @@ -116,7 +127,7 @@ static int lsm303dlhc_a_read(struct lsm303dlhc_a_data *ddata, u8 reg, char *msg) return ret; } -#ifdef (CONFIG_PM) +#if defined(CONFIG_HAS_EARLYSUSPEND) || defined(CONFIG_PM) static int lsm303dlhc_a_do_suspend(struct lsm303dlhc_a_data *ddata) { int ret; @@ -523,6 +534,14 @@ static int __devinit lsm303dlhc_a_probe(struct i2c_client *client, if (ret) goto exit_free_regulator; +#ifdef CONFIG_HAS_EARLYSUSPEND + adata->early_suspend.level = + EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1; + adata->early_suspend.suspend = lsm303dlhc_a_early_suspend; + adata->early_suspend.resume = lsm303dlhc_a_late_resume; + register_early_suspend(&adata->early_suspend); +#endif + if (adata->device_status == DEVICE_ON && adata->regulator) { regulator_disable(adata->regulator); adata->device_status = DEVICE_OFF; @@ -574,7 +593,7 @@ static int __devexit lsm303dlhc_a_remove(struct i2c_client *client) return 0; } -#ifdef (CONFIG_PM) +#if (!defined(CONFIG_HAS_EARLYSUSPEND) && defined(CONFIG_PM)) static int lsm303dlhc_a_suspend(struct device *dev) { struct lsm303dlhc_a_data *ddata; @@ -609,6 +628,27 @@ static const struct dev_pm_ops lsm303dlhc_a_dev_pm_ops = { .suspend = lsm303dlhc_a_suspend, .resume = lsm303dlhc_a_resume, }; +#else +static void lsm303dlhc_a_early_suspend(struct early_suspend *data) +{ + struct lsm303dlhc_a_data *ddata = + container_of(data, struct lsm303dlhc_a_data, early_suspend); + int ret; + + ret = lsm303dlhc_a_do_suspend(ddata); +} + +static void lsm303dlhc_a_late_resume(struct early_suspend *data) +{ + struct lsm303dlhc_a_data *ddata = + container_of(data, struct lsm303dlhc_a_data, early_suspend); + int ret; + + ret = lsm303dlhc_a_restore(ddata); + if (ret < 0) + dev_err(&ddata->client->dev, + "lsm303dlhc_a late resume failed\n"); +} #endif /* CONFIG_PM */ static const struct i2c_device_id lsm303dlhc_a_id[] = { @@ -622,7 +662,7 @@ static struct i2c_driver lsm303dlhc_a_driver = { .id_table = lsm303dlhc_a_id, .driver = { .name = "lsm303dlhc_a", - #ifdef (CONFIG_PM) + #if (!defined(CONFIG_HAS_EARLYSUSPEND) && defined(CONFIG_PM)) .pm = &lsm303dlhc_a_dev_pm_ops, #endif }, |