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David Brownell7be2c7c2007-02-10 01:46:02 -08001#
Alessandro Zummoc58411e2006-03-27 01:16:34 -08002# RTC class/drivers configuration
3#
4
Alessandro Zummo0c86edc2006-03-27 01:16:37 -08005menu "Real Time Clock"
6
Alessandro Zummoc58411e2006-03-27 01:16:34 -08007config RTC_LIB
Alessandro Zummo0c86edc2006-03-27 01:16:37 -08008 tristate
9
10config 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
Adrian Bunk27ae4102006-06-30 18:18:41 +020018 probably want to enable one or more of the interfaces below.
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080019
20 This driver can also be built as a module. If so, the module
21 will be called rtc-class.
22
23config 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
Pavel Machekaf3ffa62006-09-29 02:01:14 -070030 in order to avoid unnecessary fsck runs.
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080031
32config 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
David Brownell9e86ecb2006-09-30 23:28:14 -070040config 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
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080047comment "RTC interfaces"
48 depends on RTC_CLASS
49
Alessandro Zummoc5c3e192006-03-27 01:16:39 -080050config RTC_INTF_SYSFS
51 tristate "sysfs"
52 depends on RTC_CLASS && SYSFS
53 default RTC_CLASS
54 help
David Brownell9e86ecb2006-09-30 23:28:14 -070055 Say yes here if you want to use your RTCs using sysfs interfaces,
56 /sys/class/rtc/rtc0 through /sys/.../rtcN.
Alessandro Zummoc5c3e192006-03-27 01:16:39 -080057
58 This driver can also be built as a module. If so, the module
59 will be called rtc-sysfs.
60
Alessandro Zummo728a2942006-03-27 01:16:40 -080061config RTC_INTF_PROC
62 tristate "proc"
63 depends on RTC_CLASS && PROC_FS
64 default RTC_CLASS
65 help
David Brownell9e86ecb2006-09-30 23:28:14 -070066 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.
Alessandro Zummo728a2942006-03-27 01:16:40 -080069
70 This driver can also be built as a module. If so, the module
71 will be called rtc-proc.
72
Alessandro Zummoe8242902006-03-27 01:16:41 -080073config RTC_INTF_DEV
74 tristate "dev"
75 depends on RTC_CLASS
76 default RTC_CLASS
77 help
David Brownell9e86ecb2006-09-30 23:28:14 -070078 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.
Alessandro Zummoe8242902006-03-27 01:16:41 -080083
84 This driver can also be built as a module. If so, the module
85 will be called rtc-dev.
86
Atsushi Nemoto655066c2006-06-25 05:48:17 -070087config 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
David Brownell9e86ecb2006-09-30 23:28:14 -070092 driver does not expose RTC_UIE ioctls. Those requests generate
93 once-per-second update interrupts, used for synchronization.
Atsushi Nemoto655066c2006-06-25 05:48:17 -070094
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080095comment "RTC drivers"
96 depends on RTC_CLASS
97
David Brownell7be2c7c2007-02-10 01:46:02 -080098# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
99# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
100# global rtc_lock ... it's not yet just another platform_device.
101
102config RTC_DRV_CMOS
103 tristate "PC-style 'CMOS' real time clock"
Dave Jonesc0663322007-02-20 13:58:07 -0800104 depends on RTC_CLASS && (X86 || ALPHA || ARM26 || ARM \
David Brownell7be2c7c2007-02-10 01:46:02 -0800105 || M32R || ATARI || POWERPC)
106 help
107 Say "yes" here to get direct support for the real time clock
108 found in every PC or ACPI-based system, and some other boards.
109 Specifically the original MC146818, compatibles like those in
110 PC south bridges, the DS12887 or M48T86, some multifunction
111 or LPC bus chips, and so on.
112
113 Your system will need to define the platform device used by
114 this driver, otherwise it won't be accessible. This means
115 you can safely enable this driver if you don't know whether
116 or not your board has this kind of hardware.
117
118 This driver can also be built as a module. If so, the module
119 will be called rtc-cmos.
120
Alessandro Zummo1fec7c62006-03-27 01:16:42 -0800121config RTC_DRV_X1205
122 tristate "Xicor/Intersil X1205"
123 depends on RTC_CLASS && I2C
124 help
125 If you say yes here you get support for the
126 Xicor/Intersil X1205 RTC chip.
127
128 This driver can also be built as a module. If so, the module
129 will be called rtc-x1205.
130
David Brownell1abb0dc2006-06-25 05:48:17 -0700131config RTC_DRV_DS1307
132 tristate "Dallas/Maxim DS1307 and similar I2C RTC chips"
133 depends on RTC_CLASS && I2C
134 help
135 If you say yes here you get support for various compatible RTC
136 chips (often with battery backup) connected with I2C. This driver
137 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
138 and probably other chips. In some cases the RTC must already
139 have been initialized (by manufacturing or a bootloader).
140
141 The first seven registers on these chips hold an RTC, and other
142 registers may add features such as NVRAM, a trickle charger for
143 the RTC/NVRAM backup power, and alarms. This driver may not
144 expose all those available chip features.
145
146 This driver can also be built as a module. If so, the module
147 will be called rtc-ds1307.
148
Atsushi Nemoto9bf5b4f2006-06-25 05:48:28 -0700149config RTC_DRV_DS1553
150 tristate "Dallas DS1553"
151 depends on RTC_CLASS
152 help
153 If you say yes here you get support for the
154 Dallas DS1553 timekeeping chip.
155
156 This driver can also be built as a module. If so, the module
157 will be called rtc-ds1553.
158
Herbert Valerio Riedel7e56a7d2006-07-14 00:24:11 -0700159config RTC_DRV_ISL1208
160 tristate "Intersil 1208"
161 depends on RTC_CLASS && I2C
162 help
163 If you say yes here you get support for the
164 Intersil 1208 RTC chip.
165
166 This driver can also be built as a module. If so, the module
167 will be called rtc-isl1208.
168
Alessandro Zummoedf1aaa2006-03-27 01:16:43 -0800169config RTC_DRV_DS1672
170 tristate "Dallas/Maxim DS1672"
171 depends on RTC_CLASS && I2C
172 help
173 If you say yes here you get support for the
174 Dallas/Maxim DS1672 timekeeping chip.
175
176 This driver can also be built as a module. If so, the module
177 will be called rtc-ds1672.
178
Atsushi Nemoto5ec3e4b2006-06-25 05:48:29 -0700179config RTC_DRV_DS1742
Torsten Ertbjerg Rasmussenf9231a02006-12-06 20:39:41 -0800180 tristate "Dallas DS1742/1743"
Atsushi Nemoto5ec3e4b2006-06-25 05:48:29 -0700181 depends on RTC_CLASS
182 help
183 If you say yes here you get support for the
Torsten Ertbjerg Rasmussenf9231a02006-12-06 20:39:41 -0800184 Dallas DS1742/1743 timekeeping chip.
Atsushi Nemoto5ec3e4b2006-06-25 05:48:29 -0700185
186 This driver can also be built as a module. If so, the module
187 will be called rtc-ds1742.
188
David Brownelldb68b182006-12-06 20:38:36 -0800189config RTC_DRV_OMAP
190 tristate "TI OMAP1"
191 depends on RTC_CLASS && ( \
192 ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 )
193 help
194 Say "yes" here to support the real time clock on TI OMAP1 chips.
195 This driver can also be built as a module called rtc-omap.
196
Alessandro Zummob5a82d62006-03-27 01:16:44 -0800197config RTC_DRV_PCF8563
198 tristate "Philips PCF8563/Epson RTC8564"
199 depends on RTC_CLASS && I2C
200 help
201 If you say yes here you get support for the
202 Philips PCF8563 RTC chip. The Epson RTC8564
203 should work as well.
204
205 This driver can also be built as a module. If so, the module
206 will be called rtc-pcf8563.
207
G. Liakhovetski9c0c5702006-06-25 05:48:18 -0700208config RTC_DRV_PCF8583
209 tristate "Philips PCF8583"
210 depends on RTC_CLASS && I2C
211 help
212 If you say yes here you get support for the
213 Philips PCF8583 RTC chip.
214
215 This driver can also be built as a module. If so, the module
216 will be called rtc-pcf8583.
217
Atsushi Nemotoe0ac4762006-06-28 04:26:47 -0700218config RTC_DRV_RS5C348
219 tristate "Ricoh RS5C348A/B"
220 depends on RTC_CLASS && SPI
221 help
222 If you say yes here you get support for the
223 Ricoh RS5C348A and RS5C348B RTC chips.
224
225 This driver can also be built as a module. If so, the module
226 will be called rtc-rs5c348.
227
Alessandro Zummo7520b942006-03-27 01:16:45 -0800228config RTC_DRV_RS5C372
229 tristate "Ricoh RS5C372A/B"
230 depends on RTC_CLASS && I2C
231 help
232 If you say yes here you get support for the
233 Ricoh RS5C372A and RS5C372B RTC chips.
234
235 This driver can also be built as a module. If so, the module
236 will be called rtc-rs5c372.
237
Ben Dooks1add6782006-07-01 04:36:26 -0700238config RTC_DRV_S3C
239 tristate "Samsung S3C series SoC RTC"
240 depends on RTC_CLASS && ARCH_S3C2410
241 help
242 RTC (Realtime Clock) driver for the clock inbuilt into the
243 Samsung S3C24XX series of SoCs. This can provide periodic
244 interrupt rates from 1Hz to 64Hz for user programs, and
245 wakeup from Alarm.
246
247 The driver currently supports the common features on all the
248 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
249 and S3C2442.
250
251 This driver can also be build as a module. If so, the module
252 will be called rtc-s3c.
253
Alessandro Zummo1d98af82006-03-27 01:16:47 -0800254config RTC_DRV_M48T86
255 tristate "ST M48T86/Dallas DS12887"
256 depends on RTC_CLASS
257 help
258 If you say Y here you will get support for the
259 ST M48T86 and Dallas DS12887 RTC chips.
260
261 This driver can also be built as a module. If so, the module
262 will be called rtc-m48t86.
263
Alessandro Zummofd507e22006-03-27 01:16:45 -0800264config RTC_DRV_EP93XX
265 tristate "Cirrus Logic EP93XX"
266 depends on RTC_CLASS && ARCH_EP93XX
267 help
268 If you say yes here you get support for the
269 RTC embedded in the Cirrus Logic EP93XX processors.
270
271 This driver can also be built as a module. If so, the module
272 will be called rtc-ep93xx.
273
Richard Purdiee842f1c2006-03-27 01:16:46 -0800274config RTC_DRV_SA1100
275 tristate "SA11x0/PXA2xx"
276 depends on RTC_CLASS && (ARCH_SA1100 || ARCH_PXA)
277 help
278 If you say Y here you will get access to the real time clock
279 built into your SA11x0 or PXA2xx CPU.
280
281 To compile this driver as a module, choose M here: the
282 module will be called rtc-sa1100.
Alessandro Zummofd507e22006-03-27 01:16:45 -0800283
Paul Mundt317a6102006-09-27 17:13:19 +0900284config RTC_DRV_SH
285 tristate "SuperH On-Chip RTC"
286 depends on RTC_CLASS && SUPERH
287 help
288 Say Y here to enable support for the on-chip RTC found in
289 most SuperH processors.
290
291 To compile this driver as a module, choose M here: the
292 module will be called rtc-sh.
293
Yoichi Yuasa8417eb72006-04-10 22:54:47 -0700294config RTC_DRV_VR41XX
Alessandro Zummo3e16f6a2006-04-10 22:54:48 -0700295 tristate "NEC VR41XX"
Yoichi Yuasa8417eb72006-04-10 22:54:47 -0700296 depends on RTC_CLASS && CPU_VR41XX
Alessandro Zummo3e16f6a2006-04-10 22:54:48 -0700297 help
298 If you say Y here you will get access to the real time clock
299 built into your NEC VR41XX CPU.
300
301 To compile this driver as a module, choose M here: the
302 module will be called rtc-vr41xx.
Yoichi Yuasa8417eb72006-04-10 22:54:47 -0700303
Deepak Saxena8ae6e162006-06-25 05:47:38 -0700304config RTC_DRV_PL031
305 tristate "ARM AMBA PL031 RTC"
306 depends on RTC_CLASS && ARM_AMBA
307 help
308 If you say Y here you will get access to ARM AMBA
309 PrimeCell PL031 UART found on certain ARM SOCs.
310
311 To compile this driver as a module, choose M here: the
312 module will be called rtc-pl031.
313
Andrew Victor7fc39f62006-12-10 02:19:03 -0800314config RTC_DRV_AT91RM9200
Andrew Victor788b1fc2006-06-25 05:48:27 -0700315 tristate "AT91RM9200"
316 depends on RTC_CLASS && ARCH_AT91RM9200
317 help
318 Driver for the Atmel AT91RM9200's internal RTC (Realtime Clock).
319
Alessandro Zummoa95579c2006-03-27 01:16:42 -0800320config RTC_DRV_TEST
321 tristate "Test driver/device"
322 depends on RTC_CLASS
323 help
324 If you say yes here you get support for the
325 RTC test driver. It's a software RTC which can be
326 used to test the RTC subsystem APIs. It gets
327 the time from the system clock.
328 You want this driver only if you are doing development
329 on the RTC subsystem. Please read the source code
330 for further details.
331
332 This driver can also be built as a module. If so, the module
333 will be called rtc-test.
334
Raphael Assenat8e12ecc2006-06-25 05:48:23 -0700335config RTC_DRV_MAX6902
336 tristate "Maxim 6902"
337 depends on RTC_CLASS && SPI
338 help
339 If you say yes here you will get support for the
340 Maxim MAX6902 spi RTC chip.
341
342 This driver can also be built as a module. If so, the module
343 will be called rtc-max6902.
344
Raphael Assenat362600f2006-06-25 05:48:24 -0700345config RTC_DRV_V3020
346 tristate "EM Microelectronic V3020"
347 depends on RTC_CLASS
348 help
349 If you say yes here you will get support for the
350 EM Microelectronic v3020 RTC chip.
351
352 This driver can also be built as a module. If so, the module
353 will be called rtc-v3020.
354
Alessandro Zummo0c86edc2006-03-27 01:16:37 -0800355endmenu