talos-obmc-linux/drivers/ptp/Kconfig, branch v5.0.1

ptp: support DPAA FMan 1588 timer in ptp_qoriq

2018-06-26T13:15:14+00:00

This patch is to support DPAA (Data Path Acceleration Architecture) 1588 timer by adding "fsl,fman-ptp-timer" compatible, sharing interrupt with FMan, adding FSL_DPAA_ETH dependency, and fixing up register offset. Signed-off-by: Yangbo Lu Acked-by: Richard Cochran Acked-by: Madalin Bucur Signed-off-by: David S. Miller

ptp: rework gianfar_ptp as QorIQ common PTP driver

2018-05-29T03:05:11+00:00

gianfar_ptp was the PTP clock driver for 1588 timer module of Freescale QorIQ eTSEC (Enhanced Three-Speed Ethernet Controllers) platforms. Actually QorIQ DPAA (Data Path Acceleration Architecture) platforms is also using the same 1588 timer module in hardware. This patch is to rework gianfar_ptp as QorIQ common PTP driver to support both DPAA and eTSEC. Moved gianfar_ptp.c to drivers/ptp/, renamed it as ptp_qoriq.c, and renamed many variables. There were not any function changes. Signed-off-by: Yangbo Lu Acked-by: Richard Cochran Signed-off-by: David S. Miller

ptp: Add a ptp clock driver for Broadcom DTE

2017-06-15T16:07:15+00:00

This patch adds a ptp clock driver for the Broadcom SoCs using the Digital timing Engine (DTE) nco. Signed-off-by: Arun Parameswaran Signed-off-by: David S. Miller

PTP: add kvm PTP driver

2017-02-08T16:16:20+00:00

Add a driver with gettime method returning hosts realtime clock. This allows Chrony to synchronize host and guest clocks with high precision (see results below). chronyc> sources MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== To configure Chronyd to use PHC refclock, add the following line to its configuration file: refclock PHC /dev/ptpX poll 3 dpoll -2 offset 0 Where /dev/ptpX is the kvmclock PTP clock. Signed-off-by: Marcelo Tosatti Acked-by: Richard Cochran Signed-off-by: Paolo Bonzini

posix-timers: Make them configurable

2016-11-16T08:26:35+00:00

Some embedded systems have no use for them. This removes about 25KB from the kernel binary size when configured out. Corresponding syscalls are routed to a stub logging the attempt to use those syscalls which should be enough of a clue if they were disabled without proper consideration. They are: timer_create, timer_gettime: timer_getoverrun, timer_settime, timer_delete, clock_adjtime, setitimer, getitimer, alarm. The clock_settime, clock_gettime, clock_getres and clock_nanosleep syscalls are replaced by simple wrappers compatible with CLOCK_REALTIME, CLOCK_MONOTONIC and CLOCK_BOOTTIME only which should cover the vast majority of use cases with very little code. Signed-off-by: Nicolas Pitre Acked-by: Richard Cochran Acked-by: Thomas Gleixner Acked-by: John Stultz Reviewed-by: Josh Triplett Cc: Paul Bolle Cc: linux-kbuild@vger.kernel.org Cc: netdev@vger.kernel.org Cc: Michal Marek Cc: Edward Cree Link: http://lkml.kernel.org/r/1478841010-28605-7-git-send-email-nicolas.pitre@linaro.org Signed-off-by: Thomas Gleixner

ptp_clock: Allow for it to be optional

2016-11-16T08:26:34+00:00

In order to break the hard dependency between the PTP clock subsystem and ethernet drivers capable of being clock providers, this patch provides simple PTP stub functions to allow linkage of those drivers into the kernel even when the PTP subsystem is configured out. Drivers must be ready to accept NULL from ptp_clock_register() in that case. And to make it possible for PTP to be configured out, the select statement in those driver's Kconfig menu entries is converted to the new "imply" statement. This way the PTP subsystem may have Kconfig dependencies of its own, such as POSIX_TIMERS, without having to make those ethernet drivers unavailable if POSIX timers are cconfigured out. And when support for POSIX timers is selected again then the default config option for PTP clock support will automatically be adjusted accordingly. The pch_gbe driver is a bit special as it relies on extra code in drivers/ptp/ptp_pch.c. Therefore we let the make process descend into drivers/ptp/ even if PTP_1588_CLOCK is unselected. Signed-off-by: Nicolas Pitre Acked-by: Richard Cochran Acked-by: Edward Cree Acked-by: Thomas Gleixner Acked-by: John Stultz Reviewed-by: Josh Triplett Cc: Paul Bolle Cc: linux-kbuild@vger.kernel.org Cc: netdev@vger.kernel.org Cc: Michal Marek Link: http://lkml.kernel.org/r/1478841010-28605-4-git-send-email-nicolas.pitre@linaro.org Signed-off-by: Thomas Gleixner

ptp: ptp_pch depends on x86_32

2014-06-17T22:43:48+00:00

The ptp_pch driver is for a companion chip to the Intel Atom E600 series processors. These are 32-bit x86 processors so the driver is only needed on X86_32. Signed-off-by: Jean Delvare Cc: Richard Cochran Acked-by: Richard Cochran Signed-off-by: David S. Miller

ptp: fix kconfig dependency warnings

2014-05-12T04:27:26+00:00

Fix kconfig warnings: PTP_1588_CLOCK selects NET_PTP_CLASSIFY, which depends on NET, so PTP_1588_CLOCK should also depend on NET. PTP_1588_CLOCK_PCH selects PTP_1588_CLOCK so the former should depend on NET. warning: (IXP4XX_ETH && PTP_1588_CLOCK) selects NET_PTP_CLASSIFY which has unmet direct dependencies (NET) warning: (SFC && TILE_NET && BFIN_MAC_USE_HWSTAMP && TIGON3 && FEC && E1000E && IGB && IXGBE && I40E && MLX4_EN && SXGBE_ETH && STMMAC_ETH && TI_CPTS && PTP_1588_CLOCK_GIANFAR && PTP_1588_CLOCK_IXP46X && DP83640_PHY && PTP_1588_CLOCK_PCH) selects PTP_1588_CLOCK which has unmet direct dependencies (NET) [This warning is caused by the new 'depends on NET' in PTP_1588_CLOCK.] Signed-off-by: Randy Dunlap Acked-by: Richard Cochran Signed-off-by: David S. Miller

net: ptp: move PTP classifier in its own file

2014-04-01T20:43:18+00:00

This commit fixes a build error reported by Fengguang, that is triggered when CONFIG_NETWORK_PHY_TIMESTAMPING is not set: ERROR: "ptp_classify_raw" [drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.ko] undefined! The fix is to introduce its own file for the PTP BPF classifier, so that PTP_1588_CLOCK and/or NETWORK_PHY_TIMESTAMPING can select it independently from each other. IXP4xx driver on ARM needs to select it as well since it does not seem to select PTP_1588_CLOCK or similar that would pull it in automatically. This also allows for hiding all of the internals of the BPF PTP program inside that file, and only exporting relevant API bits to drivers. This patch also adds a kdoc documentation of ptp_classify_raw() API to make it clear that it can return PTP_CLASS_* defines. Also, the BPF program has been translated into bpf_asm code, so that it can be more easily read and altered (extensively documented in [1]). In the kernel tree under tools/net/ we have bpf_asm and bpf_dbg tools, so the commented program can simply be translated via `./bpf_asm -c prog` where prog is a file that contains the commented code. This makes it easily readable/verifiable and when there's a need to change something, jump offsets etc do not need to be replaced manually which can be very error prone. Instead, a newly translated version via bpf_asm can simply replace the old code. I have checked opcode diffs before/after and it's the very same filter. [1] Documentation/networking/filter.txt Fixes: 164d8c666521 ("net: ptp: do not reimplement PTP/BPF classifier") Reported-by: Fengguang Wu Signed-off-by: Daniel Borkmann Signed-off-by: Alexei Starovoitov Cc: Richard Cochran Cc: Jiri Benc Acked-by: Richard Cochran Signed-off-by: David S. Miller

ptp_pch: Add dependency on HAS_IOMEM

2014-01-15T22:51:22+00:00

On archs like S390 or um this driver cannot build nor work. Make it depend on HAS_IOMEM to bypass build failures. drivers/ptp/ptp_pch.c: In function ‘pch_remove’: drivers/ptp/ptp_pch.c:571:3: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] drivers/ptp/ptp_pch.c: In function ‘pch_probe’: drivers/ptp/ptp_pch.c:621:2: error: implicit declaration of function ‘ioremap’ [-Werror=implicit-function-declaration] Signed-off-by: Richard Weinberger Signed-off-by: David S. Miller