BMC/Intel-BMC/linux.git/drivers/rtc/rtc-pcf85063.c, branch dev-5.2Intel OpenBMC Linux kernel source tree (mirror)https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev-5.22019-04-04T08:07:11+00:00rtc: pcf85063: add RTC_VL_READ/RTC_VL_CLR support2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:16+00:00urn:sha1:27ff836d2f44e73370e247b2fa535166a7dcfbb9
Allow reading the oscillator status bit. Also allow clearing it even if
that makes little sense and can't be done in a race free way.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: add offset correction support2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:15+00:00urn:sha1:85370d3dd0d10a1ae5731c76409d7196ad9f5786
The PCF850363 has an offset correction with two modes:
With mode 0, the correction is triggered once every two hours and then
correction pulses are applied once per minute until the programmed
correction values have been implemented. This gives a step of 4.34 ppm.
With mode 1, the correction is triggered once every four minutes and then
correction pulses are applied once per second up to a maximum of 60 pulses.
When correction values greater than 60 pulses are used, additional
correction pulses are made in the 59 th second. This gives a step of 4.069
ppm.
Use the correction closest to the requested value.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: add nvram support2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:14+00:00urn:sha1:fadfd092ee9138825d8c2a4f95719d2e2e3202b9
The pcf85063 has one byte of nvram.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: add Micro Crystal RV8263 support2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:13+00:00urn:sha1:5b3a3ade02937ab9c5aac2a9a36c6c81e1327eb8
The Micro Crystal RV8263 has the same IC as the pcf85063 but has an on
board crystal. This means that the CAP_SEL bit has to be cleared so the
correct capacitance is selected for the crystal.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: add alarm support2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:12+00:00urn:sha1:05cb3a56ee8cc3f75bf34ce73d06cb798ec5f73a
Add support for the alarms. The match on the weekday is not used as it it
not necessarily properly set.
The tested RTC shows a behaviour where setting an alarm on the second right
after an alarm that fired is not working, probably because of the circuit
that ensures an alarm only fires once. This is why uie_unsupported is set.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: differentiate pcf85063a and pcf85063tp2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:11+00:00urn:sha1:0e2e87779ab8699e1c9a82fbf08b9462c34fd974
As stated in a comment pcf85063a and pcf85063tp don't have the same number
of registers. Especially, pcf85063tp doesn't have alarm support.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: switch to regmap2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:10+00:00urn:sha1:e89b60d02801b1fc334256261cb6c2511413ab69
Switch to regmap to simplify register accesses and remove the need for
pcf85063_stop_clock/pcf85063_start_clock.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: set range2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:09+00:00urn:sha1:802a779aeb662fadc0012aafba1da111debc623d
This is a standard BCD RTC that will fail in 2100.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: convert to devm_rtc_allocate_device2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:08+00:00urn:sha1:3555a3425822601ea16a3508b803fa7c1158cba0
This allows further improvement of the driver.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: pcf85063: remove bogus i2c functionality check2019-04-04T08:07:11+00:00Alexandre Bellonialexandre.belloni@bootlin.com2019-04-01T16:08:07+00:00urn:sha1:191c0da112e0e880587c50b692beff7ba5300a75
Only smbus reads and write are done in the driver, plain i2c functionality
is not required.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>