UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/drivers
History
Wolfgang Grandegger 3c2b9075cb rtc: add stand-alone driver for RX8025 chip 
Add support for the Epson RX-8025SA/NB RTC chips.  It includes support for
alarms, periodic interrupts (1 Hz) and clock precision adjustment.

For clock precision adjustment, the SYSFS file "clock_adjust_ppb" gets
created in "/sys/class/rtc/rtcX/device".  It permits to set and get the
clock adjustment in ppb (parts per billion), e.g.:

  # echo -183000 > /sys/class/rtc/rtc0/device/clock_adjust_ppb
  # cat /sys/class/rtc/rtc0/device/clock_adjust_ppb
  -183000

This allows to compensate temperature dependent clock drifts.  According
to the RX8025 SA/NB application manual the frequency and temperature
characteristics can be approximated using the following equation:

  df = a * (ut - t)**2

  df: Frequency deviation in any temperature
  a : Coefficient = (-35 +-5) * 10**-9
  ut: Ultimate temperature in degree = +25 +-5 degree
  t : Any temperature in degree

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Dmitry Rakhchev <rda@emcraft.com>
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2009-06-18 13:03:43 -07:00
..
accessibility
…
acpi Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-06-16 11:24:23 -07:00
amba
…
ata Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
atm
…
auxdisplay
…
base Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-06-16 12:57:37 -07:00
bluetooth Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
cdrom block: Use accessor functions for queue limits 2009-05-22 23:22:54 +02:00
char Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2009-06-17 11:53:48 -07:00
clocksource time: move PIT_TICK_RATE to linux/timex.h 2009-06-16 19:47:27 -07:00
connector trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
cpufreq [CPUFREQ] Only set sampling_rate_max deprecated, sampling_rate_min is useful 2009-06-15 11:49:41 -04:00
cpuidle
…
crypto Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
dca
…
dio
…
dma DMA: TXx9 Soc DMA Controller driver 2009-06-17 11:06:25 +01:00
edac trivial: fix typos s/paramter/parameter/ and s/excute/execute/ in documentation and source comments. 2009-06-12 18:01:46 +02:00
eisa Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2009-06-16 14:29:46 -07:00
firmware Pull for-2.6.31 into release 2009-06-17 09:35:24 -07:00
gpio microblaze: Kconfig: Enable drivers for Microblaze 2009-05-21 15:56:04 +02:00
gpu drm/radeon/kms: remove the _DRM_DRIVER from the KMS paths. 2009-06-17 09:45:46 -07:00
hid Driver Core: usb: add nodename support for usb drivers. 2009-06-15 21:30:25 -07:00
hwmon Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
i2c i2c-stu300: Make driver depend on MACH_U300 2009-06-16 22:42:17 +01:00
ide ide: remove driver_data direct access of struct device 2009-06-15 21:30:26 -07:00
idle i7300_idle: allow testing on i5000-series hardware w/o re-compile 2009-05-28 20:52:40 -04:00
ieee1394 Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck 2009-06-16 13:09:51 -07:00
ieee802154 ieee802154: fix kconfig bool/tristate muckup 2009-06-13 23:36:29 -07:00
infiniband infiniband: ehca: remove driver_data direct access of struct device 2009-06-15 21:30:27 -07:00
input Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
isdn Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
leds
…
lguest Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest 2009-06-12 09:32:26 -07:00
macintosh Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2009-06-16 11:29:17 -07:00
mca
…
md Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-06-16 12:57:37 -07:00
media Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2009-06-16 21:15:42 -07:00
memstick block: Do away with the notion of hardsect_size 2009-05-22 23:22:54 +02:00
message Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
mfd mfd: early init for MFD running regulators 2009-06-17 19:41:54 +02:00
misc Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 2009-06-14 13:46:57 -07:00
mtd Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6 2009-06-17 09:48:30 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-06-17 09:50:44 -07:00
nubus
…
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-15 09:40:05 -07:00
oprofile
…
parisc parisc: remove driver_data direct access of struct device 2009-06-15 21:30:28 -07:00
parport parport: remove driver_data direct access of struct device 2009-06-15 21:30:28 -07:00
pci Fix pci_claim_resource 2009-06-17 14:04:42 -07:00
pcmcia Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
platform sony-laptop: no need to unblock rfkill on load 2009-06-10 13:28:37 -04:00
pnp Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-06-12 18:09:18 -07:00
power
…
ps3 drivers/ps3: Add missing annotations 2009-06-15 16:47:25 +10:00
rapidio
…
regulator regulator/max1586: fix V3 gain calculation integer overflow 2009-06-15 11:18:27 +01:00
rtc rtc: add stand-alone driver for RX8025 chip 2009-06-18 13:03:43 -07:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-06-17 09:50:44 -07:00
sbus openprom: Squelch useless GCC warning. 2009-06-16 04:56:57 -07:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-06-17 09:50:44 -07:00
serial Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2009-06-16 12:57:37 -07:00
sh sh: Tie sparseirq in to Kconfig. 2009-06-11 10:33:09 +03:00
sn
…
spi spi: fix spi_write_then_read() comment 2009-06-18 13:03:42 -07:00
ssb SSB: BCM47xx: Export ssb_watchdog_timer_set 2009-06-08 16:57:50 +01:00
staging Staging: Add octeon-ethernet driver files. 2009-06-17 11:06:30 +01:00
tc
…
telephony
…
thermal thermal: remove driver_data direct access of struct device 2009-06-15 21:30:27 -07:00
uio
…
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2009-06-16 13:06:10 -07:00
uwb
…
video Merge branch 'akpm' 2009-06-16 19:50:13 -07:00
virtio virtio: enhance id_matching for virtio drivers 2009-06-12 22:16:40 +09:30
vlynq drivers: add support for the TI VLYNQ bus 2009-06-16 19:47:52 -07:00
w1 trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
watchdog Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
xen PM core: rename suspend and resume functions 2009-06-12 21:32:31 +02:00
zorro
…
Kconfig drivers: add support for the TI VLYNQ bus 2009-06-16 19:47:52 -07:00
Makefile drivers: add support for the TI VLYNQ bus 2009-06-16 19:47:52 -07:00