[linux-2.6-block.git] / drivers / rtc / Kconfig

\#
# RTC class/drivers configuration
#

menu "Real Time Clock"

config RTC_LIB
	tristate

config RTC_CLASS
	tristate "RTC class"
	depends on EXPERIMENTAL
	default n
	select RTC_LIB
	help
	  Generic RTC class support. If you say yes here, you will
 	  be allowed to plug one or more RTCs to your system. 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.

config RTC_HCTOSYS
	bool "Set system time from RTC on startup"
	depends on RTC_CLASS = y
	default y
	help
	  If you say yes here, the system time will be set using
	  the value read from the specified RTC device. This is useful
	  in order to avoid unnecessary fsck runs.

config RTC_HCTOSYS_DEVICE
	string "The RTC to read the time from"
	depends on RTC_HCTOSYS = y
	default "rtc0"
	help
	  The RTC device that will be used as the source for
	  the system time, usually rtc0.

config RTC_DEBUG
	bool "RTC debug support"
	depends on RTC_CLASS = y
	help
	  Say yes here to enable debugging support in the RTC framework
	  and individual RTC drivers.

comment "RTC interfaces"
	depends on RTC_CLASS

config RTC_INTF_SYSFS
	tristate "sysfs"
	depends on RTC_CLASS && SYSFS
	default RTC_CLASS
	help
	  Say yes here if you want to use your RTCs using sysfs interfaces,
	  /sys/class/rtc/rtc0 through /sys/.../rtcN.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-sysfs.

config RTC_INTF_PROC
	tristate "proc"
	depends on RTC_CLASS && PROC_FS
	default RTC_CLASS
	help
	  Say yes here if you want to use your first RTC through the proc
	  interface, /proc/driver/rtc.  Other RTCs will not be available
	  through that API.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-proc.

config RTC_INTF_DEV
	tristate "dev"
	depends on RTC_CLASS
	default RTC_CLASS
	help
	  Say yes here if you want to use your RTCs using the /dev
	  interfaces, which "udev" sets up as /dev/rtc0 through
	  /dev/rtcN.  You may want to set up a symbolic link so one
	  of these can be accessed as /dev/rtc, which is a name
	  expected by "hwclock" and some other programs.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-dev.

config RTC_INTF_DEV_UIE_EMUL
	bool "RTC UIE emulation on dev interface"
	depends on RTC_INTF_DEV
	help
	  Provides an emulation for RTC_UIE if the underlaying rtc chip
	  driver does not expose RTC_UIE ioctls.  Those requests generate
	  once-per-second update interrupts, used for synchronization.

comment "RTC drivers"
	depends on RTC_CLASS

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.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-x1205.

config RTC_DRV_DS1307
	tristate "Dallas/Maxim DS1307 and similar I2C RTC chips"
	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
	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
	  and probably other chips.  In some cases the RTC must already
	  have been initialized (by manufacturing or a bootloader).

	  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.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1307.

config RTC_DRV_DS1553
	tristate "Dallas DS1553"
	depends on RTC_CLASS
	help
	  If you say yes here you get support for the
	  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_ISL1208
	tristate "Intersil 1208"
	depends on RTC_CLASS && I2C
	help
	  If you say yes here you get support for the
	  Intersil 1208 RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-isl1208.

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.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1672.

config RTC_DRV_DS1742
	tristate "Dallas DS1742/1743"
	depends on RTC_CLASS
	help
	  If you say yes here you get support for the
	  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_OMAP
	tristate "TI OMAP1"
	depends on RTC_CLASS && ( \
		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_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
	  should work as well.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-pcf8563.

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.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-pcf8583.

config RTC_DRV_RS5C348
	tristate "Ricoh RS5C348A/B"
	depends on RTC_CLASS && SPI
	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_RS5C372
	tristate "Ricoh RS5C372A/B"
	depends on RTC_CLASS && I2C
	help
	  If you say yes here you get support for the
	  Ricoh RS5C372A and RS5C372B RTC chips.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-rs5c372.

config RTC_DRV_S3C
	tristate "Samsung S3C series SoC RTC"
	depends on RTC_CLASS && ARCH_S3C2410
	help
	  RTC (Realtime Clock) driver for the clock inbuilt into the
	  Samsung S3C24XX series of SoCs. This can provide periodic
	  interrupt rates from 1Hz to 64Hz for user programs, and
	  wakeup from Alarm.

	  The driver currently supports the common features on all the
	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
	  and S3C2442.

	  This driver can also be build as a module. If so, the module
	  will be called rtc-s3c.

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_EP93XX
	tristate "Cirrus Logic EP93XX"
	depends on RTC_CLASS && ARCH_EP93XX
	help
	  If you say yes here you get support for the
	  RTC embedded in the Cirrus Logic EP93XX processors.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ep93xx.

config RTC_DRV_SA1100
	tristate "SA11x0/PXA2xx"
	depends on RTC_CLASS && (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.

	  To compile this driver as a module, choose M here: the
	  module will be called rtc-sa1100.

config RTC_DRV_SH
	tristate "SuperH On-Chip RTC"
	depends on RTC_CLASS && SUPERH
	help
	  Say Y here to enable support for the on-chip RTC found in
	  most SuperH processors.

 	  To compile this driver as a module, choose M here: the
	  module will be called rtc-sh.

config RTC_DRV_VR41XX
	tristate "NEC VR41XX"
	depends on RTC_CLASS && 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_PL031
	tristate "ARM AMBA PL031 RTC"
	depends on RTC_CLASS && ARM_AMBA
	help
	  If you say Y here you will get access to ARM AMBA
	  PrimeCell PL031 UART found on certain ARM SOCs.

	  To compile this driver as a module, choose M here: the
	  module will be called rtc-pl031.

config RTC_DRV_AT91RM9200
	tristate "AT91RM9200"
	depends on RTC_CLASS && ARCH_AT91RM9200
	help
	  Driver for the Atmel AT91RM9200's internal RTC (Realtime Clock).

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
	  used to test the RTC subsystem APIs. It gets
	  the time from the system clock.
	  You want this driver only if you are doing development
	  on the RTC subsystem. Please read the source code
	  for further details.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-test.

config RTC_DRV_MAX6902
	tristate "Maxim 6902"
	depends on RTC_CLASS && SPI
	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_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.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-v3020.

endmenu
Commit	Line	Data
0c86edc0	1	\#
c58411e9 AZ	2	# RTC class/drivers configuration
	3	#
	4
0c86edc0 AZ	5	menu "Real Time Clock"
0c86edc0 AZ	6
c58411e9	7	config RTC_LIB
0c86edc0 AZ	8	tristate
	9
	10	config RTC_CLASS
	11	tristate "RTC class"
	12	depends on EXPERIMENTAL
	13	default n
	14	select RTC_LIB
	15	help
	16	Generic RTC class support. If you say yes here, you will
	17	be allowed to plug one or more RTCs to your system. You will
27ae4104	18	probably want to enable one or more of the interfaces below.
0c86edc0 AZ	19
	20	This driver can also be built as a module. If so, the module
	21	will be called rtc-class.
	22
	23	config RTC_HCTOSYS
	24	bool "Set system time from RTC on startup"
	25	depends on RTC_CLASS = y
	26	default y
	27	help
	28	If you say yes here, the system time will be set using
	29	the value read from the specified RTC device. This is useful
af3ffa67	30	in order to avoid unnecessary fsck runs.
0c86edc0 AZ	31
	32	config RTC_HCTOSYS_DEVICE
	33	string "The RTC to read the time from"
	34	depends on RTC_HCTOSYS = y
	35	default "rtc0"
	36	help
	37	The RTC device that will be used as the source for
	38	the system time, usually rtc0.
	39
9e86ecb6 DB	40	config RTC_DEBUG
	41	bool "RTC debug support"
	42	depends on RTC_CLASS = y
	43	help
	44	Say yes here to enable debugging support in the RTC framework
	45	and individual RTC drivers.
	46
0c86edc0 AZ	47	comment "RTC interfaces"
	48	depends on RTC_CLASS
	49
c5c3e192 AZ	50	config RTC_INTF_SYSFS
	51	tristate "sysfs"
	52	depends on RTC_CLASS && SYSFS
	53	default RTC_CLASS
	54	help
9e86ecb6 DB	55	Say yes here if you want to use your RTCs using sysfs interfaces,
9e86ecb6 DB	56	/sys/class/rtc/rtc0 through /sys/.../rtcN.
c5c3e192 AZ	57
	58	This driver can also be built as a module. If so, the module
	59	will be called rtc-sysfs.
	60
728a2947 AZ	61	config RTC_INTF_PROC
	62	tristate "proc"
	63	depends on RTC_CLASS && PROC_FS
	64	default RTC_CLASS
	65	help
9e86ecb6 DB	66	Say yes here if you want to use your first RTC through the proc
	67	interface, /proc/driver/rtc. Other RTCs will not be available
	68	through that API.
728a2947 AZ	69
	70	This driver can also be built as a module. If so, the module
	71	will be called rtc-proc.
	72
e824290e AZ	73	config RTC_INTF_DEV
	74	tristate "dev"
	75	depends on RTC_CLASS
	76	default RTC_CLASS
	77	help
9e86ecb6 DB	78	Say yes here if you want to use your RTCs using the /dev
	79	interfaces, which "udev" sets up as /dev/rtc0 through
	80	/dev/rtcN. You may want to set up a symbolic link so one
	81	of these can be accessed as /dev/rtc, which is a name
	82	expected by "hwclock" and some other programs.
e824290e AZ	83
	84	This driver can also be built as a module. If so, the module
	85	will be called rtc-dev.
	86
655066c3 AN	87	config RTC_INTF_DEV_UIE_EMUL
	88	bool "RTC UIE emulation on dev interface"
	89	depends on RTC_INTF_DEV
	90	help
	91	Provides an emulation for RTC_UIE if the underlaying rtc chip
9e86ecb6 DB	92	driver does not expose RTC_UIE ioctls. Those requests generate
9e86ecb6 DB	93	once-per-second update interrupts, used for synchronization.
655066c3	94
0c86edc0 AZ	95	comment "RTC drivers"
	96	depends on RTC_CLASS
	97
1fec7c66 AZ	98	config RTC_DRV_X1205
	99	tristate "Xicor/Intersil X1205"
	100	depends on RTC_CLASS && I2C
	101	help
	102	If you say yes here you get support for the
	103	Xicor/Intersil X1205 RTC chip.
	104
	105	This driver can also be built as a module. If so, the module
	106	will be called rtc-x1205.
	107
1abb0dc9 DB	108	config RTC_DRV_DS1307
	109	tristate "Dallas/Maxim DS1307 and similar I2C RTC chips"
	110	depends on RTC_CLASS && I2C
	111	help
	112	If you say yes here you get support for various compatible RTC
	113	chips (often with battery backup) connected with I2C. This driver
	114	should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
	115	and probably other chips. In some cases the RTC must already
	116	have been initialized (by manufacturing or a bootloader).
	117
	118	The first seven registers on these chips hold an RTC, and other
	119	registers may add features such as NVRAM, a trickle charger for
	120	the RTC/NVRAM backup power, and alarms. This driver may not
	121	expose all those available chip features.
	122
	123	This driver can also be built as a module. If so, the module
	124	will be called rtc-ds1307.
	125
9bf5b4f5 AN	126	config RTC_DRV_DS1553
	127	tristate "Dallas DS1553"
	128	depends on RTC_CLASS
	129	help
	130	If you say yes here you get support for the
	131	Dallas DS1553 timekeeping chip.
	132
	133	This driver can also be built as a module. If so, the module
	134	will be called rtc-ds1553.
	135
7e56a7dc HVR	136	config RTC_DRV_ISL1208
	137	tristate "Intersil 1208"
	138	depends on RTC_CLASS && I2C
	139	help
	140	If you say yes here you get support for the
	141	Intersil 1208 RTC chip.
	142
	143	This driver can also be built as a module. If so, the module
	144	will be called rtc-isl1208.
	145
edf1aaa3 AZ	146	config RTC_DRV_DS1672
	147	tristate "Dallas/Maxim DS1672"
	148	depends on RTC_CLASS && I2C
	149	help
	150	If you say yes here you get support for the
	151	Dallas/Maxim DS1672 timekeeping chip.
	152
	153	This driver can also be built as a module. If so, the module
	154	will be called rtc-ds1672.
	155
5ec3e4b7	156	config RTC_DRV_DS1742
f9231a0c	157	tristate "Dallas DS1742/1743"
5ec3e4b7 AN	158	depends on RTC_CLASS
	159	help
	160	If you say yes here you get support for the
f9231a0c	161	Dallas DS1742/1743 timekeeping chip.
5ec3e4b7 AN	162
	163	This driver can also be built as a module. If so, the module
	164	will be called rtc-ds1742.
	165
db68b189 DB	166	config RTC_DRV_OMAP
	167	tristate "TI OMAP1"
	168	depends on RTC_CLASS && ( \
	169	ARCH_OMAP15XX \|\| ARCH_OMAP16XX \|\| ARCH_OMAP730 )
	170	help
	171	Say "yes" here to support the real time clock on TI OMAP1 chips.
	172	This driver can also be built as a module called rtc-omap.
	173
b5a82d62 AZ	174	config RTC_DRV_PCF8563
	175	tristate "Philips PCF8563/Epson RTC8564"
	176	depends on RTC_CLASS && I2C
	177	help
	178	If you say yes here you get support for the
	179	Philips PCF8563 RTC chip. The Epson RTC8564
	180	should work as well.
	181
	182	This driver can also be built as a module. If so, the module
	183	will be called rtc-pcf8563.
	184
9c0c5705 L	185	config RTC_DRV_PCF8583
	186	tristate "Philips PCF8583"
	187	depends on RTC_CLASS && I2C
	188	help
	189	If you say yes here you get support for the
	190	Philips PCF8583 RTC chip.
	191
	192	This driver can also be built as a module. If so, the module
	193	will be called rtc-pcf8583.
	194
e0ac4761 AN	195	config RTC_DRV_RS5C348
	196	tristate "Ricoh RS5C348A/B"
	197	depends on RTC_CLASS && SPI
	198	help
	199	If you say yes here you get support for the
	200	Ricoh RS5C348A and RS5C348B RTC chips.
	201
	202	This driver can also be built as a module. If so, the module
	203	will be called rtc-rs5c348.
	204
7520b94d AZ	205	config RTC_DRV_RS5C372
	206	tristate "Ricoh RS5C372A/B"
	207	depends on RTC_CLASS && I2C
	208	help
	209	If you say yes here you get support for the
	210	Ricoh RS5C372A and RS5C372B RTC chips.
	211
	212	This driver can also be built as a module. If so, the module
	213	will be called rtc-rs5c372.
	214
1add6781 BD	215	config RTC_DRV_S3C
	216	tristate "Samsung S3C series SoC RTC"
	217	depends on RTC_CLASS && ARCH_S3C2410
	218	help
	219	RTC (Realtime Clock) driver for the clock inbuilt into the
	220	Samsung S3C24XX series of SoCs. This can provide periodic
	221	interrupt rates from 1Hz to 64Hz for user programs, and
	222	wakeup from Alarm.
	223
	224	The driver currently supports the common features on all the
	225	S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
	226	and S3C2442.
	227
	228	This driver can also be build as a module. If so, the module
	229	will be called rtc-s3c.
	230
1d98af87 AZ	231	config RTC_DRV_M48T86
	232	tristate "ST M48T86/Dallas DS12887"
	233	depends on RTC_CLASS
	234	help
	235	If you say Y here you will get support for the
	236	ST M48T86 and Dallas DS12887 RTC chips.
	237
	238	This driver can also be built as a module. If so, the module
	239	will be called rtc-m48t86.
	240
fd507e2f AZ	241	config RTC_DRV_EP93XX
	242	tristate "Cirrus Logic EP93XX"
	243	depends on RTC_CLASS && ARCH_EP93XX
	244	help
	245	If you say yes here you get support for the
	246	RTC embedded in the Cirrus Logic EP93XX processors.
	247
	248	This driver can also be built as a module. If so, the module
	249	will be called rtc-ep93xx.
	250
e842f1c8 RP	251	config RTC_DRV_SA1100
	252	tristate "SA11x0/PXA2xx"
	253	depends on RTC_CLASS && (ARCH_SA1100 \|\| ARCH_PXA)
	254	help
	255	If you say Y here you will get access to the real time clock
	256	built into your SA11x0 or PXA2xx CPU.
	257
	258	To compile this driver as a module, choose M here: the
	259	module will be called rtc-sa1100.
fd507e2f	260
317a6104 PM	261	config RTC_DRV_SH
	262	tristate "SuperH On-Chip RTC"
	263	depends on RTC_CLASS && SUPERH
	264	help
	265	Say Y here to enable support for the on-chip RTC found in
	266	most SuperH processors.
	267
	268	To compile this driver as a module, choose M here: the
	269	module will be called rtc-sh.
	270
8417eb7a	271	config RTC_DRV_VR41XX
3e16f6af	272	tristate "NEC VR41XX"
8417eb7a	273	depends on RTC_CLASS && CPU_VR41XX
3e16f6af AZ	274	help
	275	If you say Y here you will get access to the real time clock
	276	built into your NEC VR41XX CPU.
	277
	278	To compile this driver as a module, choose M here: the
	279	module will be called rtc-vr41xx.
8417eb7a	280
8ae6e163 DS	281	config RTC_DRV_PL031
	282	tristate "ARM AMBA PL031 RTC"
	283	depends on RTC_CLASS && ARM_AMBA
	284	help
	285	If you say Y here you will get access to ARM AMBA
	286	PrimeCell PL031 UART found on certain ARM SOCs.
	287
	288	To compile this driver as a module, choose M here: the
	289	module will be called rtc-pl031.
	290
7fc39f6d	291	config RTC_DRV_AT91RM9200
788b1fc6 AV	292	tristate "AT91RM9200"
	293	depends on RTC_CLASS && ARCH_AT91RM9200
	294	help
	295	Driver for the Atmel AT91RM9200's internal RTC (Realtime Clock).
	296
a95579cd AZ	297	config RTC_DRV_TEST
	298	tristate "Test driver/device"
	299	depends on RTC_CLASS
	300	help
	301	If you say yes here you get support for the
	302	RTC test driver. It's a software RTC which can be
	303	used to test the RTC subsystem APIs. It gets
	304	the time from the system clock.
	305	You want this driver only if you are doing development
	306	on the RTC subsystem. Please read the source code
	307	for further details.
	308
	309	This driver can also be built as a module. If so, the module
	310	will be called rtc-test.
	311
8e12ecc2 RA	312	config RTC_DRV_MAX6902
	313	tristate "Maxim 6902"
	314	depends on RTC_CLASS && SPI
	315	help
	316	If you say yes here you will get support for the
	317	Maxim MAX6902 spi RTC chip.
	318
	319	This driver can also be built as a module. If so, the module
	320	will be called rtc-max6902.
	321
362600fe RA	322	config RTC_DRV_V3020
	323	tristate "EM Microelectronic V3020"
	324	depends on RTC_CLASS
	325	help
	326	If you say yes here you will get support for the
	327	EM Microelectronic v3020 RTC chip.
	328
	329	This driver can also be built as a module. If so, the module
	330	will be called rtc-v3020.
	331
0c86edc0	332	endmenu