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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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eae9d2ba0c
This patch adds the kernel side of the PPS support currently named "LinuxPPS". PPS means "pulse per second" and a PPS source is just a device which provides a high precision signal each second so that an application can use it to adjust system clock time. Common use is the combination of the NTPD as userland program with a GPS receiver as PPS source to obtain a wallclock-time with sub-millisecond synchronisation to UTC. To obtain this goal the userland programs shoud use the PPS API specification (RFC 2783 - Pulse-Per-Second API for UNIX-like Operating Systems, Version 1.0) which in part is implemented by this patch. It provides a set of chars devices, one per PPS source, which can be used to get the time signal. The RFC's functions can be implemented by accessing to these char devices. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
117 lines
1.9 KiB
Plaintext
117 lines
1.9 KiB
Plaintext
# drivers/Kconfig
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menu "Device Drivers"
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source "drivers/base/Kconfig"
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source "drivers/connector/Kconfig"
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source "drivers/mtd/Kconfig"
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source "drivers/of/Kconfig"
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source "drivers/parport/Kconfig"
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source "drivers/pnp/Kconfig"
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source "drivers/block/Kconfig"
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# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
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source "drivers/misc/Kconfig"
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source "drivers/ide/Kconfig"
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source "drivers/scsi/Kconfig"
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source "drivers/ata/Kconfig"
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source "drivers/md/Kconfig"
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source "drivers/message/fusion/Kconfig"
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source "drivers/ieee1394/Kconfig"
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source "drivers/message/i2o/Kconfig"
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source "drivers/macintosh/Kconfig"
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source "drivers/net/Kconfig"
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source "drivers/isdn/Kconfig"
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source "drivers/telephony/Kconfig"
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# input before char - char/joystick depends on it. As does USB.
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source "drivers/input/Kconfig"
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source "drivers/char/Kconfig"
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source "drivers/i2c/Kconfig"
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source "drivers/spi/Kconfig"
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source "drivers/pps/Kconfig"
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source "drivers/gpio/Kconfig"
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source "drivers/w1/Kconfig"
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source "drivers/power/Kconfig"
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source "drivers/hwmon/Kconfig"
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source "drivers/thermal/Kconfig"
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source "drivers/watchdog/Kconfig"
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source "drivers/ssb/Kconfig"
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source "drivers/mfd/Kconfig"
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source "drivers/regulator/Kconfig"
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source "drivers/media/Kconfig"
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source "drivers/video/Kconfig"
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source "sound/Kconfig"
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source "drivers/hid/Kconfig"
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source "drivers/usb/Kconfig"
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source "drivers/uwb/Kconfig"
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source "drivers/mmc/Kconfig"
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source "drivers/memstick/Kconfig"
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source "drivers/leds/Kconfig"
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source "drivers/accessibility/Kconfig"
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source "drivers/infiniband/Kconfig"
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source "drivers/edac/Kconfig"
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source "drivers/rtc/Kconfig"
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source "drivers/dma/Kconfig"
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source "drivers/dca/Kconfig"
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source "drivers/auxdisplay/Kconfig"
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source "drivers/uio/Kconfig"
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source "drivers/vlynq/Kconfig"
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source "drivers/xen/Kconfig"
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source "drivers/staging/Kconfig"
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source "drivers/platform/Kconfig"
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endmenu
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