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3c2b9075cb
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>
80 lines
3.1 KiB
Makefile
80 lines
3.1 KiB
Makefile
#
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# Makefile for RTC class/drivers.
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#
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ifeq ($(CONFIG_RTC_DEBUG),y)
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EXTRA_CFLAGS += -DDEBUG
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endif
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obj-$(CONFIG_RTC_LIB) += rtc-lib.o
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obj-$(CONFIG_RTC_HCTOSYS) += hctosys.o
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obj-$(CONFIG_RTC_CLASS) += rtc-core.o
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rtc-core-y := class.o interface.o
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rtc-core-$(CONFIG_RTC_INTF_DEV) += rtc-dev.o
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rtc-core-$(CONFIG_RTC_INTF_PROC) += rtc-proc.o
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rtc-core-$(CONFIG_RTC_INTF_SYSFS) += rtc-sysfs.o
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# Keep the list ordered.
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obj-$(CONFIG_RTC_DRV_AT32AP700X)+= rtc-at32ap700x.o
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obj-$(CONFIG_RTC_DRV_AT91RM9200)+= rtc-at91rm9200.o
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obj-$(CONFIG_RTC_DRV_AT91SAM9) += rtc-at91sam9.o
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obj-$(CONFIG_RTC_DRV_AU1XXX) += rtc-au1xxx.o
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obj-$(CONFIG_RTC_DRV_BFIN) += rtc-bfin.o
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obj-$(CONFIG_RTC_DRV_CMOS) += rtc-cmos.o
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obj-$(CONFIG_RTC_DRV_DM355EVM) += rtc-dm355evm.o
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obj-$(CONFIG_RTC_DRV_DS1216) += rtc-ds1216.o
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obj-$(CONFIG_RTC_DRV_DS1286) += rtc-ds1286.o
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obj-$(CONFIG_RTC_DRV_DS1302) += rtc-ds1302.o
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obj-$(CONFIG_RTC_DRV_DS1305) += rtc-ds1305.o
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obj-$(CONFIG_RTC_DRV_DS1307) += rtc-ds1307.o
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obj-$(CONFIG_RTC_DRV_DS1374) += rtc-ds1374.o
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obj-$(CONFIG_RTC_DRV_DS1390) += rtc-ds1390.o
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obj-$(CONFIG_RTC_DRV_DS1511) += rtc-ds1511.o
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obj-$(CONFIG_RTC_DRV_DS1553) += rtc-ds1553.o
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obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o
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obj-$(CONFIG_RTC_DRV_DS1742) += rtc-ds1742.o
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obj-$(CONFIG_RTC_DRV_DS3234) += rtc-ds3234.o
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obj-$(CONFIG_RTC_DRV_EFI) += rtc-efi.o
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obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o
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obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o
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obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o
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obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o
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obj-$(CONFIG_RTC_DRV_M41T94) += rtc-m41t94.o
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obj-$(CONFIG_RTC_DRV_M48T35) += rtc-m48t35.o
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obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o
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obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o
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obj-$(CONFIG_RTC_DRV_BQ4802) += rtc-bq4802.o
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obj-$(CONFIG_RTC_DRV_SUN4V) += rtc-sun4v.o
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obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-starfire.o
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obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o
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obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o
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obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o
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obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o
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obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o
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obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o
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obj-$(CONFIG_RTC_DRV_PL030) += rtc-pl030.o
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obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o
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obj-$(CONFIG_RTC_DRV_GENERIC) += rtc-generic.o
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obj-$(CONFIG_RTC_DRV_PXA) += rtc-pxa.o
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obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o
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obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o
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obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o
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obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o
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obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o
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obj-$(CONFIG_RTC_DRV_RX8581) += rtc-rx8581.o
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obj-$(CONFIG_RTC_DRV_S35390A) += rtc-s35390a.o
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obj-$(CONFIG_RTC_DRV_S3C) += rtc-s3c.o
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obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o
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obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o
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obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o
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obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
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obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl4030.o
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obj-$(CONFIG_RTC_DRV_TX4939) += rtc-tx4939.o
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obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o
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obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o
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obj-$(CONFIG_RTC_DRV_WM8350) += rtc-wm8350.o
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obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o
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obj-$(CONFIG_RTC_DRV_PCF50633) += rtc-pcf50633.o
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obj-$(CONFIG_RTC_DRV_PS3) += rtc-ps3.o
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