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4 Commits

Author SHA1 Message Date
Oleksij Rempel
9d1fa4c373 rtc: rv8803: convert spin_lock to mutex_lock 
Fix a scheduling while atomic issue caused by rv8803_set_time()
holding a spinlock during the call to i2c_smbus_read_byte_data().

Signed-off-by: Oleksij Rempel <fixed-term.Oleksij.Rempel@de.bosch.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
 2016-03-14 17:08:15 +01:00
Gregory CLEMENT
78ef5f2d2d rtc: rv8803: Extend compatibility with the rx8900 
The Seiko Epson's RTC RX8900 layout register is compatible with the
RV8803. So let's add its ID in order to reuse the same driver.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
 2016-01-11 20:20:00 +01:00
Andrzej Hajda
68c85f2916 rtc: rv8803: fix handling return value of i2c_smbus_read_byte_data 
The function can return negative values, so its result should
be assigned to signed variable.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
 2016-01-11 20:20:00 +01:00
Alexandre Belloni
1e3929ef0e rtc: Add a driver for Micro Crystal RV8803 
This driver supports the following functions:
 - reading and settings time
 - alarms when connected to an IRQ
 - reading and clearing the voltage low flags
 - nvram

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
 2015-11-08 14:12:32 +01:00