[linux.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 of 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 fschk 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.

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 RTC using the sysfs
	  interface, /sys/class/rtc/rtcX .

	  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 RTC using the proc
	  interface, /proc/driver/rtc .

	  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 RTC using the dev
	  interface, /dev/rtc .

	  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 did not provide RTC_UIE ioctls.

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_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_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_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_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_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_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.

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
	18	probably want to enable one of more of the interfaces below.
	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
	30	in order to avoid unnecessary fschk runs.
	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
	40	comment "RTC interfaces"
	41	depends on RTC_CLASS
	42
c5c3e192 AZ	43	config RTC_INTF_SYSFS
	44	tristate "sysfs"
	45	depends on RTC_CLASS && SYSFS
	46	default RTC_CLASS
	47	help
	48	Say yes here if you want to use your RTC using the sysfs
	49	interface, /sys/class/rtc/rtcX .
	50
	51	This driver can also be built as a module. If so, the module
	52	will be called rtc-sysfs.
	53
728a2947 AZ	54	config RTC_INTF_PROC
	55	tristate "proc"
	56	depends on RTC_CLASS && PROC_FS
	57	default RTC_CLASS
	58	help
	59	Say yes here if you want to use your RTC using the proc
	60	interface, /proc/driver/rtc .
	61
	62	This driver can also be built as a module. If so, the module
	63	will be called rtc-proc.
	64
e824290e AZ	65	config RTC_INTF_DEV
	66	tristate "dev"
	67	depends on RTC_CLASS
	68	default RTC_CLASS
	69	help
	70	Say yes here if you want to use your RTC using the dev
	71	interface, /dev/rtc .
	72
	73	This driver can also be built as a module. If so, the module
	74	will be called rtc-dev.
	75
655066c3 AN	76	config RTC_INTF_DEV_UIE_EMUL
	77	bool "RTC UIE emulation on dev interface"
	78	depends on RTC_INTF_DEV
	79	help
	80	Provides an emulation for RTC_UIE if the underlaying rtc chip
	81	driver did not provide RTC_UIE ioctls.
	82
0c86edc0 AZ	83	comment "RTC drivers"
	84	depends on RTC_CLASS
	85
1fec7c66 AZ	86	config RTC_DRV_X1205
	87	tristate "Xicor/Intersil X1205"
	88	depends on RTC_CLASS && I2C
	89	help
	90	If you say yes here you get support for the
	91	Xicor/Intersil X1205 RTC chip.
	92
	93	This driver can also be built as a module. If so, the module
	94	will be called rtc-x1205.
	95
1abb0dc9 DB	96	config RTC_DRV_DS1307
	97	tristate "Dallas/Maxim DS1307 and similar I2C RTC chips"
	98	depends on RTC_CLASS && I2C
	99	help
	100	If you say yes here you get support for various compatible RTC
	101	chips (often with battery backup) connected with I2C. This driver
	102	should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
	103	and probably other chips. In some cases the RTC must already
	104	have been initialized (by manufacturing or a bootloader).
	105
	106	The first seven registers on these chips hold an RTC, and other
	107	registers may add features such as NVRAM, a trickle charger for
	108	the RTC/NVRAM backup power, and alarms. This driver may not
	109	expose all those available chip features.
	110
	111	This driver can also be built as a module. If so, the module
	112	will be called rtc-ds1307.
	113
edf1aaa3 AZ	114	config RTC_DRV_DS1672
	115	tristate "Dallas/Maxim DS1672"
	116	depends on RTC_CLASS && I2C
	117	help
	118	If you say yes here you get support for the
	119	Dallas/Maxim DS1672 timekeeping chip.
	120
	121	This driver can also be built as a module. If so, the module
	122	will be called rtc-ds1672.
	123
b5a82d62 AZ	124	config RTC_DRV_PCF8563
	125	tristate "Philips PCF8563/Epson RTC8564"
	126	depends on RTC_CLASS && I2C
	127	help
	128	If you say yes here you get support for the
	129	Philips PCF8563 RTC chip. The Epson RTC8564
	130	should work as well.
	131
	132	This driver can also be built as a module. If so, the module
	133	will be called rtc-pcf8563.
	134
9c0c5705 L	135	config RTC_DRV_PCF8583
	136	tristate "Philips PCF8583"
	137	depends on RTC_CLASS && I2C
	138	help
	139	If you say yes here you get support for the
	140	Philips PCF8583 RTC chip.
	141
	142	This driver can also be built as a module. If so, the module
	143	will be called rtc-pcf8583.
	144
7520b94d AZ	145	config RTC_DRV_RS5C372
	146	tristate "Ricoh RS5C372A/B"
	147	depends on RTC_CLASS && I2C
	148	help
	149	If you say yes here you get support for the
	150	Ricoh RS5C372A and RS5C372B RTC chips.
	151
	152	This driver can also be built as a module. If so, the module
	153	will be called rtc-rs5c372.
	154
1d98af87 AZ	155	config RTC_DRV_M48T86
	156	tristate "ST M48T86/Dallas DS12887"
	157	depends on RTC_CLASS
	158	help
	159	If you say Y here you will get support for the
	160	ST M48T86 and Dallas DS12887 RTC chips.
	161
	162	This driver can also be built as a module. If so, the module
	163	will be called rtc-m48t86.
	164
fd507e2f AZ	165	config RTC_DRV_EP93XX
	166	tristate "Cirrus Logic EP93XX"
	167	depends on RTC_CLASS && ARCH_EP93XX
	168	help
	169	If you say yes here you get support for the
	170	RTC embedded in the Cirrus Logic EP93XX processors.
	171
	172	This driver can also be built as a module. If so, the module
	173	will be called rtc-ep93xx.
	174
e842f1c8 RP	175	config RTC_DRV_SA1100
	176	tristate "SA11x0/PXA2xx"
	177	depends on RTC_CLASS && (ARCH_SA1100 \|\| ARCH_PXA)
	178	help
	179	If you say Y here you will get access to the real time clock
	180	built into your SA11x0 or PXA2xx CPU.
	181
	182	To compile this driver as a module, choose M here: the
	183	module will be called rtc-sa1100.
fd507e2f	184
8417eb7a	185	config RTC_DRV_VR41XX
3e16f6af	186	tristate "NEC VR41XX"
8417eb7a	187	depends on RTC_CLASS && CPU_VR41XX
3e16f6af AZ	188	help
	189	If you say Y here you will get access to the real time clock
	190	built into your NEC VR41XX CPU.
	191
	192	To compile this driver as a module, choose M here: the
	193	module will be called rtc-vr41xx.
8417eb7a	194
8ae6e163 DS	195	config RTC_DRV_PL031
	196	tristate "ARM AMBA PL031 RTC"
	197	depends on RTC_CLASS && ARM_AMBA
	198	help
	199	If you say Y here you will get access to ARM AMBA
	200	PrimeCell PL031 UART found on certain ARM SOCs.
	201
	202	To compile this driver as a module, choose M here: the
	203	module will be called rtc-pl031.
	204
a95579cd AZ	205	config RTC_DRV_TEST
	206	tristate "Test driver/device"
	207	depends on RTC_CLASS
	208	help
	209	If you say yes here you get support for the
	210	RTC test driver. It's a software RTC which can be
	211	used to test the RTC subsystem APIs. It gets
	212	the time from the system clock.
	213	You want this driver only if you are doing development
	214	on the RTC subsystem. Please read the source code
	215	for further details.
	216
	217	This driver can also be built as a module. If so, the module
	218	will be called rtc-test.
	219
0c86edc0	220	endmenu