diff options
| author | Zhou Jingyu <b02241@freescale.com> | 2011-05-12 13:21:36 +0800 |
|---|---|---|
| committer | Zhou Jingyu <b02241@freescale.com> | 2011-05-12 18:42:52 +0800 |
| commit | 4e2a89449dfc80b78533e35f670b98f09f3c95ab (patch) | |
| tree | 38eedbbc788ae99ebb92766b094e91fb16323144 | |
| parent | 99a218e876a3a4831ec121fdff0e2b4e39408eda (diff) | |
ENGR00143239-1 MX53: add power off and reset function
add power off interface for da9053
Signed-off-by: Zhou Jingyu <Jingyu.Zhou@freescale.com>
| -rw-r--r-- | drivers/mfd/da9052-core.c | 18 | ||||
| -rw-r--r-- | include/linux/mfd/da9052/da9052.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c index 68e8393a455f..a9b620320902 100644 --- a/drivers/mfd/da9052-core.c +++ b/drivers/mfd/da9052-core.c @@ -34,6 +34,7 @@ struct da9052_eh_nb eve_nb_array[EVE_CNT]; static struct da9052_ssc_ops ssc_ops; struct mutex manconv_lock; static struct semaphore eve_nb_array_lock; +static struct da9052 *da9052_data; void da9052_lock(struct da9052 *da9052) { @@ -499,6 +500,7 @@ int da9052_ssc_init(struct da9052 *da9052) DA9052_EH_DEVICE_NAME, da9052)) return -EIO; enable_irq_wake(da9052->irq); + da9052_data = da9052; return 0; } @@ -515,6 +517,22 @@ void da9052_ssc_exit(struct da9052 *da9052) return; } +void da9053_power_off(void) +{ + struct da9052_ssc_msg ssc_msg; + if (!da9052_data) + return; + + ssc_msg.addr = DA9052_CONTROLB_REG; + da9052_data->read(da9052_data, &ssc_msg); + ssc_msg.data |= DA9052_CONTROLB_SHUTDOWN; + pr_info("da9052 shutdown: DA9052_CONTROLB_REG=%x\n", ssc_msg.data); + da9052_data->write(da9052_data, &ssc_msg); + ssc_msg.addr = DA9052_GPID9_REG; + ssc_msg.data = 0; + da9052_data->read(da9052_data, &ssc_msg); +} + MODULE_AUTHOR("Dialog Semiconductor Ltd <dchen@diasemi.com>"); MODULE_DESCRIPTION("DA9052 MFD Core"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h index 6070696b658d..0ff9693ee387 100644 --- a/include/linux/mfd/da9052/da9052.h +++ b/include/linux/mfd/da9052/da9052.h @@ -225,4 +225,5 @@ int eh_register_nb(struct da9052 *da9052, struct da9052_eh_nb *nb); int eh_unregister_nb(struct da9052 *da9052, struct da9052_eh_nb *nb); int da9052_manual_read(struct da9052 *da9052, unsigned char channel); +void da9053_power_off(void); #endif /* __LINUX_MFD_DA9052_DA9052_H */ |