# RTC class/drivers configuration
#
-menu "Real Time Clock"
- depends on !S390
-
config RTC_LIB
tristate
-config RTC_CLASS
- tristate "RTC class"
+menuconfig RTC_CLASS
+ tristate "Real Time Clock"
default n
+ depends on !S390
select RTC_LIB
help
Generic RTC class support. If you say yes here, you will
probably want to enable one or more of the interfaces below.
This driver can also be built as a module. If so, the module
- will be called rtc-class.
+ will be called rtc-core.
+
+if RTC_CLASS
config RTC_HCTOSYS
bool "Set system time from RTC on startup and resume"
help
The RTC device that will be used to (re)initialize the system
clock, usually rtc0. Initialization is done when the system
- starts up, and when it resumes from a low power state.
+ starts up, and when it resumes from a low power state. This
+ device should record time in UTC, since the kernel won't do
+ timezone correction.
+
+ The driver for this RTC device must be loaded before late_initcall
+ functions run, so it must usually be statically linked.
This clock should be battery-backed, so that it reads the correct
time when the system boots from a power-off state. Otherwise, your
If the clock you specify here is not battery backed, it may still
be useful to reinitialize system time when resuming from system
- sleep states. Do not specify an RTC here unless it stays powered
+ sleep states. Do not specify an RTC here unless it stays powered
during all this system's supported sleep states.
config RTC_DEBUG
and individual RTC drivers.
comment "RTC interfaces"
- depends on RTC_CLASS
config RTC_INTF_SYSFS
boolean "/sys/class/rtc/rtcN (sysfs)"
- depends on RTC_CLASS && SYSFS
+ depends on SYSFS
default RTC_CLASS
help
Say yes here if you want to use your RTCs using sysfs interfaces,
config RTC_INTF_PROC
boolean "/proc/driver/rtc (procfs for rtc0)"
- depends on RTC_CLASS && PROC_FS
+ depends on PROC_FS
default RTC_CLASS
help
Say yes here if you want to use your first RTC through the proc
config RTC_INTF_DEV
boolean "/dev/rtcN (character devices)"
- depends on RTC_CLASS
default RTC_CLASS
help
Say yes here if you want to use your RTCs using the /dev
config RTC_DRV_TEST
tristate "Test driver/device"
- depends on RTC_CLASS
help
If you say yes here you get support for the
RTC test driver. It's a software RTC which can be
will be called rtc-test.
comment "I2C RTC drivers"
- depends on RTC_CLASS && I2C
+ depends on I2C
+
+if I2C
config RTC_DRV_DS1307
tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00"
- depends on RTC_CLASS && I2C
help
If you say yes here you get support for various compatible RTC
chips (often with battery backup) connected with I2C. This driver
The first seven registers on these chips hold an RTC, and other
registers may add features such as NVRAM, a trickle charger for
- the RTC/NVRAM backup power, and alarms. This driver may not
- expose all those available chip features.
+ the RTC/NVRAM backup power, and alarms. NVRAM is visible in
+ sysfs, but other chip features may not be available.
This driver can also be built as a module. If so, the module
will be called rtc-ds1307.
+config RTC_DRV_DS1374
+ tristate "Dallas/Maxim DS1374"
+ depends on RTC_CLASS && I2C
+ help
+ If you say yes here you get support for Dallas Semiconductor
+ DS1374 real-time clock chips. If an interrupt is associated
+ with the device, the alarm functionality is supported.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-ds1374.
+
config RTC_DRV_DS1672
tristate "Dallas/Maxim DS1672"
- depends on RTC_CLASS && I2C
help
If you say yes here you get support for the
Dallas/Maxim DS1672 timekeeping chip.
will be called rtc-ds1672.
config RTC_DRV_MAX6900
- tristate "Maxim 6900"
- depends on RTC_CLASS && I2C
+ tristate "Maxim MAX6900"
help
If you say yes here you will get support for the
Maxim MAX6900 I2C RTC chip.
config RTC_DRV_RS5C372
tristate "Ricoh RS5C372A/B, RV5C386, RV5C387A"
- depends on RTC_CLASS && I2C
help
If you say yes here you get support for the
Ricoh RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
will be called rtc-rs5c372.
config RTC_DRV_ISL1208
- tristate "Intersil 1208"
- depends on RTC_CLASS && I2C
+ tristate "Intersil ISL1208"
help
If you say yes here you get support for the
- Intersil 1208 RTC chip.
+ Intersil ISL1208 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-isl1208.
config RTC_DRV_X1205
tristate "Xicor/Intersil X1205"
- depends on RTC_CLASS && I2C
help
If you say yes here you get support for the
Xicor/Intersil X1205 RTC chip.
config RTC_DRV_PCF8563
tristate "Philips PCF8563/Epson RTC8564"
- depends on RTC_CLASS && I2C
help
If you say yes here you get support for the
Philips PCF8563 RTC chip. The Epson RTC8564
config RTC_DRV_PCF8583
tristate "Philips PCF8583"
- depends on RTC_CLASS && I2C
help
If you say yes here you get support for the Philips PCF8583
RTC chip found on Acorn RiscPCs. This driver supports the
This driver can also be built as a module. If so, the module
will be called rtc-pcf8583.
+config RTC_DRV_M41T80
+ tristate "ST M41T80/81/82/83/84/85/87"
+ help
+ If you say Y here you will get support for the
+ ST M41T80 RTC chips series. Currently following chips are
+ supported: M41T80, M41T81, M41T82, M41T83, M41ST84, M41ST85
+ and M41ST87.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-m41t80.
+
+config RTC_DRV_M41T80_WDT
+ bool "ST M41T80 series RTC watchdog timer"
+ depends on RTC_DRV_M41T80
+ help
+ If you say Y here you will get support for the
+ watchdog timer in ST M41T80 RTC chips series.
+
+config RTC_DRV_TWL92330
+ boolean "TI TWL92330/Menelaus"
+ depends on MENELAUS
+ help
+ If you say yes here you get support for the RTC on the
+ TWL92330 "Menelaus" power management chip, used with OMAP2
+ platforms. The support is integrated with the rest of
+ the Menelaus driver; it's not separate module.
+
+config RTC_DRV_S35390A
+ tristate "Seiko Instruments S-35390A"
+ select BITREVERSE
+ help
+ If you say yes here you will get support for the Seiko
+ Instruments S-35390A.
+
+ This driver can also be built as a module. If so the module
+ will be called rtc-s35390a.
+
+config RTC_DRV_FM3130
+ tristate "Ramtron FM3130"
+ help
+ If you say Y here you will get support for the
+ Ramtron FM3130 RTC chips.
+ Ramtron FM3130 is a chip with two separate devices inside,
+ RTC clock and FRAM. This driver provides only RTC functionality.
+
+ This driver can also be built as a module. If so the module
+ will be called rtc-fm3130.
+
+endif # I2C
+
comment "SPI RTC drivers"
- depends on RTC_CLASS && SPI_MASTER
+
+if SPI_MASTER
+
+config RTC_DRV_M41T94
+ tristate "ST M41T94"
+ help
+ If you say yes here you will get support for the
+ ST M41T94 SPI RTC chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-m41t94.
+
+config RTC_DRV_DS1305
+ tristate "Dallas/Maxim DS1305/DS1306"
+ help
+ Select this driver to get support for the Dallas/Maxim DS1305
+ and DS1306 real time clock chips. These support a trickle
+ charger, alarms, and NVRAM in addition to the clock.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-ds1305.
+
+config RTC_DRV_MAX6902
+ tristate "Maxim MAX6902"
+ help
+ If you say yes here you will get support for the
+ Maxim MAX6902 SPI RTC chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-max6902.
+
+config RTC_DRV_R9701
+ tristate "Epson RTC-9701JE"
+ help
+ If you say yes here you will get support for the
+ Epson RTC-9701JE SPI RTC chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-r9701.
config RTC_DRV_RS5C348
tristate "Ricoh RS5C348A/B"
- depends on RTC_CLASS && SPI_MASTER
help
If you say yes here you get support for the
Ricoh RS5C348A and RS5C348B RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-rs5c348.
-config RTC_DRV_MAX6902
- tristate "Maxim 6902"
- depends on RTC_CLASS && SPI_MASTER
+config RTC_DRV_DS3234
+ tristate "Maxim/Dallas DS3234"
help
- If you say yes here you will get support for the
- Maxim MAX6902 SPI RTC chip.
+ If you say yes here you get support for the
+ Maxim/Dallas DS3234 SPI RTC chip.
This driver can also be built as a module. If so, the module
- will be called rtc-max6902.
+ will be called rtc-ds3234.
+
+endif # SPI_MASTER
comment "Platform RTC drivers"
- depends on RTC_CLASS
# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
config RTC_DRV_CMOS
tristate "PC-style 'CMOS'"
- depends on RTC_CLASS && (X86 || ALPHA || ARM26 || ARM \
- || M32R || ATARI || PPC || MIPS)
+ depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
+ default y if X86
help
Say "yes" here to get direct support for the real time clock
found in every PC or ACPI-based system, and some other boards.
This driver can also be built as a module. If so, the module
will be called rtc-cmos.
-config RTC_DRV_DS1553
- tristate "Dallas DS1553"
+config RTC_DRV_DS1216
+ tristate "Dallas DS1216"
+ depends on SNI_RM
+ help
+ If you say yes here you get support for the Dallas DS1216 RTC chips.
+
+config RTC_DRV_DS1286
+ tristate "Dallas DS1286"
+ help
+ If you say yes here you get support for the Dallas DS1286 RTC chips.
+
+config RTC_DRV_DS1302
+ tristate "Dallas DS1302"
+ depends on SH_SECUREEDGE5410
+ help
+ If you say yes here you get support for the Dallas DS1302 RTC chips.
+
+config RTC_DRV_DS1511
+ tristate "Dallas DS1511"
depends on RTC_CLASS
help
If you say yes here you get support for the
- Dallas DS1553 timekeeping chip.
+ Dallas DS1511 timekeeping/watchdog chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-ds1511.
+
+config RTC_DRV_DS1553
+ tristate "Maxim/Dallas DS1553"
+ help
+ If you say yes here you get support for the
+ Maxim/Dallas DS1553 timekeeping chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds1553.
config RTC_DRV_DS1742
- tristate "Dallas DS1742/1743"
- depends on RTC_CLASS
+ tristate "Maxim/Dallas DS1742/1743"
help
If you say yes here you get support for the
- Dallas DS1742/1743 timekeeping chip.
+ Maxim/Dallas DS1742/1743 timekeeping chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds1742.
+config RTC_DRV_STK17TA8
+ tristate "Simtek STK17TA8"
+ depends on RTC_CLASS
+ help
+ If you say yes here you get support for the
+ Simtek STK17TA8 timekeeping chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-stk17ta8.
+
config RTC_DRV_M48T86
tristate "ST M48T86/Dallas DS12887"
- depends on RTC_CLASS
help
If you say Y here you will get support for the
ST M48T86 and Dallas DS12887 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-m48t86.
+config RTC_DRV_M48T35
+ tristate "ST M48T35"
+ help
+ If you say Y here you will get support for the
+ ST M48T35 RTC chip.
+
+ This driver can also be built as a module, if so, the module
+ will be called "rtc-m48t35".
+
+config RTC_DRV_M48T59
+ tristate "ST M48T59/M48T08/M48T02"
+ help
+ If you say Y here you will get support for the
+ ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
+
+ These chips are usually found in Sun SPARC and UltraSPARC
+ workstations.
+
+ This driver can also be built as a module, if so, the module
+ will be called "rtc-m48t59".
+
+config RTC_DRV_BQ4802
+ tristate "TI BQ4802"
+ help
+ If you say Y here you will get support for the TI
+ BQ4802 RTC chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-bq4802.
+
config RTC_DRV_V3020
tristate "EM Microelectronic V3020"
- depends on RTC_CLASS
help
If you say yes here you will get support for the
EM Microelectronic v3020 RTC chip.
will be called rtc-v3020.
comment "on-CPU RTC drivers"
- depends on RTC_CLASS
config RTC_DRV_OMAP
tristate "TI OMAP1"
- depends on RTC_CLASS && ( \
- ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 )
+ depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730
help
Say "yes" here to support the real time clock on TI OMAP1 chips.
This driver can also be built as a module called rtc-omap.
config RTC_DRV_S3C
tristate "Samsung S3C series SoC RTC"
- depends on RTC_CLASS && ARCH_S3C2410
+ depends on ARCH_S3C2410
help
RTC (Realtime Clock) driver for the clock inbuilt into the
Samsung S3C24XX series of SoCs. This can provide periodic
config RTC_DRV_EP93XX
tristate "Cirrus Logic EP93XX"
- depends on RTC_CLASS && ARCH_EP93XX
+ depends on ARCH_EP93XX
help
If you say yes here you get support for the
RTC embedded in the Cirrus Logic EP93XX processors.
config RTC_DRV_SA1100
tristate "SA11x0/PXA2xx"
- depends on RTC_CLASS && (ARCH_SA1100 || ARCH_PXA)
+ depends on ARCH_SA1100 || ARCH_PXA
help
If you say Y here you will get access to the real time clock
built into your SA11x0 or PXA2xx CPU.
config RTC_DRV_VR41XX
tristate "NEC VR41XX"
- depends on RTC_CLASS && CPU_VR41XX
+ depends on CPU_VR41XX
help
If you say Y here you will get access to the real time clock
built into your NEC VR41XX CPU.
To compile this driver as a module, choose M here: the
module will be called rtc-vr41xx.
+config RTC_DRV_PL030
+ tristate "ARM AMBA PL030 RTC"
+ depends on ARM_AMBA
+ help
+ If you say Y here you will get access to ARM AMBA
+ PrimeCell PL030 RTC found on certain ARM SOCs.
+
+ To compile this driver as a module, choose M here: the
+ module will be called rtc-pl030.
+
config RTC_DRV_PL031
tristate "ARM AMBA PL031 RTC"
- depends on RTC_CLASS && ARM_AMBA
+ depends on ARM_AMBA
help
If you say Y here you will get access to ARM AMBA
PrimeCell PL031 RTC found on certain ARM SOCs.
config RTC_DRV_AT32AP700X
tristate "AT32AP700X series RTC"
- depends on RTC_CLASS && PLATFORM_AT32AP
+ depends on PLATFORM_AT32AP
help
Driver for the internal RTC (Realtime Clock) on Atmel AVR32
AT32AP700x family processors.
config RTC_DRV_AT91RM9200
- tristate "AT91RM9200"
- depends on RTC_CLASS && ARCH_AT91RM9200
- help
- Driver for the Atmel AT91RM9200's internal RTC (Realtime Clock).
+ tristate "AT91RM9200 or AT91SAM9RL"
+ depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL
+ help
+ Driver for the internal RTC (Realtime Clock) module found on
+ Atmel AT91RM9200's and AT91SAM9RL chips. On SAM9RL chips
+ this is powered by the backup power supply.
+
+config RTC_DRV_AT91SAM9
+ tristate "AT91SAM9x/AT91CAP9"
+ depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
+ help
+ RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
+ (Real Time Timer). These timers are powered by the backup power
+ supply (such as a small coin cell battery), but do not need to
+ be used as RTCs.
+
+ (On AT91SAM9rl chips you probably want to use the dedicated RTC
+ module and leave the RTT available for other uses.)
+
+config RTC_DRV_AT91SAM9_RTT
+ int
+ range 0 1
+ default 0
+ prompt "RTT module Number" if ARCH_AT91SAM9263
+ depends on RTC_DRV_AT91SAM9
+ help
+ More than one RTT module is available. You can choose which
+ one will be used as an RTC. The default of zero is normally
+ OK to use, though some systems use that for non-RTC purposes.
+
+config RTC_DRV_AT91SAM9_GPBR
+ int
+ range 0 3 if !ARCH_AT91SAM9263
+ range 0 15 if ARCH_AT91SAM9263
+ default 0
+ prompt "Backup Register Number"
+ depends on RTC_DRV_AT91SAM9
+ help
+ The RTC driver needs to use one of the General Purpose Backup
+ Registers (GPBRs) as well as the RTT. You can choose which one
+ will be used. The default of zero is normally OK to use, but
+ on some systems other software needs to use that register.
config RTC_DRV_BFIN
tristate "Blackfin On-Chip RTC"
- depends on RTC_CLASS && BFIN
+ depends on BLACKFIN && !BF561
help
If you say yes here you will get support for the
Blackfin On-Chip Real Time Clock.
config RTC_DRV_RS5C313
tristate "Ricoh RS5C313"
- depends on RTC_CLASS && SH_LANDISK
+ depends on SH_LANDISK
help
If you say yes here you get support for the Ricoh RS5C313 RTC chips.
-endmenu
+config RTC_DRV_PPC
+ tristate "PowerPC machine dependent RTC support"
+ depends on PPC_MERGE
+ help
+ The PowerPC kernel has machine-specific functions for accessing
+ the RTC. This exposes that functionality through the generic RTC
+ class.
+
+config RTC_DRV_SUN4V
+ bool "SUN4V Hypervisor RTC"
+ depends on SPARC64
+ help
+ If you say Y here you will get support for the Hypervisor
+ based RTC on SUN4V systems.
+
+config RTC_DRV_STARFIRE
+ bool "Starfire RTC"
+ depends on SPARC64
+ help
+ If you say Y here you will get support for the RTC found on
+ Starfire systems.
+
+endif # RTC_CLASS
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