linux-toradex.git/drivers/rtc/rtc-m41t80.c, branch v4.9.2

rtc: m41t80: add suspend handlers for alarm IRQ

2016-07-21T18:06:57+00:00

Allow the alarm IRQ of RTC to be used as a wakeup source for the system
suspend.

Signed-off-by: Stefan Christ 
Signed-off-by: Alexandre Belloni

rtc: m41t80: make it a real error message

2016-07-21T18:06:47+00:00

It should be a real error message, when the driver cannot enable the IRQ
of the device.

Signed-off-by: Stefan Christ 
Signed-off-by: Alexandre Belloni

rtc: m41t80: use devm_add_action_or_reset()

2016-07-19T15:27:40+00:00

If devm_add_action() fails we are explicitly calling the cleanup to free
the resources allocated.  Lets use the helper devm_add_action_or_reset()
and return directly in case of error, as we know that the cleanup function
has been already called by the helper if there was any error.

Signed-off-by: Sudip Mukherjee 
Signed-off-by: Alexandre Belloni

rtc: simplify implementations of read_alarm

2016-07-09T08:24:45+00:00

Since commit d68778b80dd7 ("rtc: initialize output parameter for read
alarm to "uninitialized"") there is no need to explicitly set
unsupported members to -1. So drop the respective assignments from
drivers.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Alexandre Belloni

rtc: m41t80: handle oscillator failure bit

2016-05-20T10:33:51+00:00

Handle the Oscillator Failure (OF) bit on each read of date-time.
If the OF is set, an error is returned (-EINVAL) instead of the date-time.
The OF bit is cleared each time the date is set.

Signed-off-by: Mylène Josserand 
Signed-off-by: Alexandre Belloni

rtc: m41t80: add wakealarm functionality

2016-05-20T10:33:51+00:00

To enable the wakealarm, the device must be able to wakeup.
This is done by setting the device wakeup capability to true with
'device_init_wakeup' function.

Signed-off-by: Mylène Josserand 
Signed-off-by: Alexandre Belloni

rtc: m41t80: add alarm functionality

2016-05-20T10:33:51+00:00

Previous 'commit c3b79770e51a ("Expire alarms after the time is set")'
and 'commit 48e9766726eb ("remove disabled alarm functionality")' removed
the alarm support because the alarm irq was not functional.

Add the alarm IRQ functionality with newer functions than previous
code. Tested with 'rtctest' and the alarm is functional.

Signed-off-by: Mylène Josserand 
Signed-off-by: Alexandre Belloni

rtc: m41t80: remove warnings and replace obsolete function

2016-05-20T10:33:51+00:00

Replace the obsolete "simple_strtoul" function to "kstrtoul".
Remove some checkpatch's errors, warnings and checks :
   - alignment with open parenthesis
   - spaces around '<' and '<<'
   - blank line after structure
   - quoted string split across lines

Signed-off-by: Mylène Josserand 
Signed-off-by: Alexandre Belloni

rtc: m41t80: add the use of 'BIT' macro

2016-05-20T10:33:51+00:00

Replace bit shifts by BIT macro.

Signed-off-by: Mylène Josserand 
Signed-off-by: Alexandre Belloni

rtc: m41t80: replace i2c functions for smbus ones

2016-05-20T10:33:51+00:00

The driver used i2c_transfer methods to read and set date/time.
The smbus methods should be used.

This commit replaces i2c_transfer functions by i2c_smbus_XX_i2c_block_data
for reading and setting the datetime.

Signed-off-by: Mylène Josserand 
Signed-off-by: Alexandre Belloni