diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-02-19 11:51:22 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-04-08 16:48:06 +0200 |
| commit | c6cc25fda58da8685ecef3f179adc7b99c8253b2 (patch) | |
| tree | 6b6493d91317116023a889aba164caed00c6f2c2 /drivers/mfd | |
| parent | 7aa3d7c8d5ca941e70183b8a7c980beff6edf534 (diff) | |
mfd: adp5520: Restore mode bits on resume
The adp5520 unfortunately also clears the BL_EN bit when the nSTNDBY bit is
cleared. So we need to make sure to restore it during resume if it was set
before suspend.
Cc: stable@vger.kernel.org
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/adp5520.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/mfd/adp5520.c b/drivers/mfd/adp5520.c index 5ab021f4f6d..0d2eba02343 100644 --- a/drivers/mfd/adp5520.c +++ b/drivers/mfd/adp5520.c @@ -36,6 +36,7 @@ struct adp5520_chip { struct blocking_notifier_head notifier_list; int irq; unsigned long id; + uint8_t mode; }; static int __adp5520_read(struct i2c_client *client, @@ -326,7 +327,10 @@ static int adp5520_suspend(struct device *dev) struct i2c_client *client = to_i2c_client(dev); struct adp5520_chip *chip = dev_get_drvdata(&client->dev); - adp5520_clr_bits(chip->dev, ADP5520_MODE_STATUS, ADP5520_nSTNBY); + adp5520_read(chip->dev, ADP5520_MODE_STATUS, &chip->mode); + /* All other bits are W1C */ + chip->mode &= ADP5520_BL_EN | ADP5520_DIM_EN | ADP5520_nSTNBY; + adp5520_write(chip->dev, ADP5520_MODE_STATUS, 0); return 0; } @@ -335,7 +339,7 @@ static int adp5520_resume(struct device *dev) struct i2c_client *client = to_i2c_client(dev); struct adp5520_chip *chip = dev_get_drvdata(&client->dev); - adp5520_set_bits(chip->dev, ADP5520_MODE_STATUS, ADP5520_nSTNBY); + adp5520_write(chip->dev, ADP5520_MODE_STATUS, chip->mode); return 0; } #endif |