drivers/rtc/Kconfig

   1 \#
   2 # RTC class/drivers configuration
   3 #
   4
   5 menu "Real Time Clock"
   6
   7 config RTC_LIB
   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
  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
  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
  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
  76 comment "RTC drivers"
  77         depends on RTC_CLASS
  78
  79 config RTC_DRV_X1205
  80         tristate "Xicor/Intersil X1205"
  81         depends on RTC_CLASS && I2C
  82         help
  83           If you say yes here you get support for the
  84           Xicor/Intersil X1205 RTC chip.
  85
  86           This driver can also be built as a module. If so, the module
  87           will be called rtc-x1205.
  88
  89 config RTC_DRV_DS1672
  90         tristate "Dallas/Maxim DS1672"
  91         depends on RTC_CLASS && I2C
  92         help
  93           If you say yes here you get support for the
  94           Dallas/Maxim DS1672 timekeeping chip.
  95
  96           This driver can also be built as a module. If so, the module
  97           will be called rtc-ds1672.
  98
  99 config RTC_DRV_PCF8563
 100         tristate "Philips PCF8563/Epson RTC8564"
 101         depends on RTC_CLASS && I2C
 102         help
 103           If you say yes here you get support for the
 104           Philips PCF8563 RTC chip. The Epson RTC8564
 105           should work as well.
 106
 107           This driver can also be built as a module. If so, the module
 108           will be called rtc-pcf8563.
 109
 110 config RTC_DRV_RS5C372
 111         tristate "Ricoh RS5C372A/B"
 112         depends on RTC_CLASS && I2C
 113         help
 114           If you say yes here you get support for the
 115           Ricoh RS5C372A and RS5C372B RTC chips.
 116
 117           This driver can also be built as a module. If so, the module
 118           will be called rtc-rs5c372.
 119
 120 config RTC_DRV_M48T86
 121         tristate "ST M48T86/Dallas DS12887"
 122         depends on RTC_CLASS
 123         help
 124           If you say Y here you will get support for the
 125           ST M48T86 and Dallas DS12887 RTC chips.
 126
 127           This driver can also be built as a module. If so, the module
 128           will be called rtc-m48t86.
 129
 130 config RTC_DRV_EP93XX
 131         tristate "Cirrus Logic EP93XX"
 132         depends on RTC_CLASS && ARCH_EP93XX
 133         help
 134           If you say yes here you get support for the
 135           RTC embedded in the Cirrus Logic EP93XX processors.
 136
 137           This driver can also be built as a module. If so, the module
 138           will be called rtc-ep93xx.
 139
 140 config RTC_DRV_SA1100
 141         tristate "SA11x0/PXA2xx"
 142         depends on RTC_CLASS && (ARCH_SA1100 || ARCH_PXA)
 143         help
 144           If you say Y here you will get access to the real time clock
 145           built into your SA11x0 or PXA2xx CPU.
 146
 147           To compile this driver as a module, choose M here: the
 148           module will be called rtc-sa1100.
 149
 150 config RTC_DRV_TEST
 151         tristate "Test driver/device"
 152         depends on RTC_CLASS
 153         help
 154           If you say yes here you get support for the
 155           RTC test driver. It's a software RTC which can be
 156           used to test the RTC subsystem APIs. It gets
 157           the time from the system clock.
 158           You want this driver only if you are doing development
 159           on the RTC subsystem. Please read the source code
 160           for further details.
 161
 162           This driver can also be built as a module. If so, the module
 163           will be called rtc-test.
 164
 165 endmenu