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* ptp: ptp_clockmatrix: clean-up - parenthesis around a == b are unnecessaryVincent Cheng2021-02-171-10/+8
| | | | | | | Code clean-up. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: Simplify code - remove unnecessary `err` variable.Vincent Cheng2021-02-171-4/+1
| | | | | | | Code clean-up. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: Coding style - tighten vertical spacing.Vincent Cheng2021-02-171-79/+11
| | | | | | | | | | | | | | | Code clean-up. * Remove blank line between variable declarations. * Remove blank line between: err = blah(...) if (err) ... * Remove unnecessary blank line before/after loop constructs. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: Clean-up dev_*() messages.Vincent Cheng2021-02-171-79/+43
| | | | | | | | | | | | | | | Code clean-up. * Remove unnecessary \n termination from dev_*() messages. * Remove 'char *fmt' to define strings to stay within 80 column limit. Not needed since coding guidelines increased to 100 columns limit. Keeping format in place allows static code checkers to validate the arguments. * Tighten up vertical spacing. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: Remove unused header declarations.Vincent Cheng2021-02-171-2/+0
| | | | | | | Removed unused header declarations. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: Add alignment of 1 PPS to idtcm_perout_enable.Vincent Cheng2021-02-171-3/+13
| | | | | | | | | When enabling output using PTP_CLK_REQ_PEROUT, need to align the output clock to the internal 1 PPS clock. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: Add wait_for_sys_apll_dpll_lock.Vincent Cheng2021-02-173-2/+87
| | | | | | | | | | | | | | Part of the device initialization aligns the rising edge of the output clock to the internal 1 PPS clock. If the system APLL and DPLL is not locked, then the alignment will fail and there will be a fixed offset between the internal 1 PPS clock and the output clock. After loading the device firmware, poll the system APLL and DPLL for locked state prior to initialization, timing out after 2 seconds. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_ines: prevent build when HAS_IOMEM is not setRandy Dunlap2021-01-071-0/+1
| | | | | | | | | | | | | | | | | | | | ptp_ines.c uses devm_platform_ioremap_resource(), which is only built/available when CONFIG_HAS_IOMEM is enabled. CONFIG_HAS_IOMEM is not enabled for arch/s390/, so builds on S390 have a build error: s390-linux-ld: drivers/ptp/ptp_ines.o: in function `ines_ptp_ctrl_probe': ptp_ines.c:(.text+0x17e6): undefined reference to `devm_platform_ioremap_resource' Prevent builds of ptp_ines.c when HAS_IOMEM is not set. Fixes: bad1eaa6ac31 ("ptp: Add a driver for InES time stamping IP core.") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kernel test robot <lkp@intel.com> Link: lore.kernel.org/r/202101031125.ZEFCUiKi-lkp@intel.com Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/20210106042531.1351-1-rdunlap@infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* phy: dp83640: select CONFIG_CRC32Arnd Bergmann2021-01-061-0/+1
| | | | | | | | | | | | | Without crc32, this driver fails to link: arm-linux-gnueabi-ld: drivers/net/phy/dp83640.o: in function `match': dp83640.c:(.text+0x476c): undefined reference to `crc32_le' Fixes: 539e44d26855 ("dp83640: Include hash in timestamp/packet matching") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: clockmatrix: deprecate firmware older than 4.8.7Min Li2020-12-102-35/+45
| | | | | | | | | Add deprecated flag to indicate < v4.8.7. Fix idtcm_enable_tod() call correct settime(). Signed-off-by: Min Li <min.li.xe@renesas.com> Link: https://lore.kernel.org/r/1607442117-13661-4-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ptp: clockmatrix: Fix non-zero phase_adj is lost after snapMin Li2020-12-102-24/+90
| | | | | | | | | Fix non-zero phase_adj is lost after snap. Use ktime_sub to do ktime_t subtraction. Signed-off-by: Min Li <min.li.xe@renesas.com> Link: https://lore.kernel.org/r/1607442117-13661-3-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ptp: clockmatrix: remove 5 second delay before entering write phase modeMin Li2020-12-102-23/+0
| | | | | | | | Remove write phase mode 5 second setup delay, not needed. Signed-off-by: Min Li <min.li.xe@renesas.com> Link: https://lore.kernel.org/r/1607442117-13661-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ptp: clockmatrix: reset device and check BOOT_STATUSMin Li2020-12-103-36/+124
| | | | | | | | | | | | | | SM_RESET device only when loading full configuration and check for BOOT_STATUS. Also remove polling for write trigger done in _idtcm_settime(). Changes since v1: -Correct warnings from strict checkpatch Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1607442117-13661-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ptp: Add clock driver for the OpenCompute TimeCard.Jonathan Lemon2020-12-053-0/+413
| | | | | | | | | | | | | The OpenCompute time card is an atomic clock along with a GPS receiver that provides a Grandmaster clock source for a PTP enabled network. More information is available at http://www.timingcard.com/ Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/20201204035128.2219252-2-jonathan.lemon@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski2020-11-281-33/+16
|\ | | | | | | | | | | | | | | | | Trivial conflict in CAN, keep the net-next + the byteswap wrapper. Conflicts: drivers/net/can/usb/gs_usb.c Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| * ptp: clockmatrix: bug fix for idtcm_strverscmpMin Li2020-11-261-33/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Feed kstrtou8 with NULL terminated string. Changes since v1: -Use sscanf to get rid of adhoc string parse. Changes since v2: -Check if sscanf returns 3. Fixes: 7ea5fda2b132 ("ptp: ptp_clockmatrix: update to support 4.8.7 firmware") Signed-off-by: Min Li <min.li.xe@renesas.com> Link: https://lore.kernel.org/r/1606273115-25792-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | ptp: ptp_ines: use new PTP_MSGTYPE_* define(s)Christian Eggers2020-11-231-12/+7
| | | | | | | | | | | | | | | | | | | | | | Remove driver internal defines for this. Masking msgtype with 0xf is already done within ptp_get_msgtype(). Signed-off-by: Christian Eggers <ceggers@arri.de> Cc: Kurt Kanzenbach <kurt@linutronix.de> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | ptp: idt82p33: optimize _idt82p33_adjfineMin Li2020-11-071-9/+1
| | | | | | | | | | | | | | | | | | Use div_s64 so that the neg_adj is not needed. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-3-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | ptp: idt82p33: use i2c_master_send for bus writeMin Li2020-11-072-11/+37
| | | | | | | | | | | | | | | | | | | | | | Refactor idt82p33_xfer and use i2c_master_send for write operation. Because some I2C controllers are only working with single-burst write transaction. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-2-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | ptp: idt82p33: add adjphase supportMin Li2020-11-072-66/+153
|/ | | | | | | | | Add idt82p33_adjphase() to support PHC write phase mode. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1604634729-24960-1-git-send-email-min.li.xe@renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* ptp_qoriq: support FIPER3Yangbo Lu2020-09-191-1/+19
| | | | | | | | | | The FIPER3 (fixed interval period pulse generator) is supported on DPAA2 and ENETC network controller hardware. This patch is to support it in ptp_qoriq driver. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_ines: Remove redundant null checkXu Wang2020-08-261-2/+1
| | | | | | | | Because kfree_skb already checked NULL skb parameter, so the additional check is unnecessary, just remove it. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller2020-08-232-13/+45
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| * ptp: ptp_clockmatrix: use i2c_master_send for i2c writeMin Li2020-08-202-13/+45
| | | | | | | | | | | | | | | | | | | | | | | | The old code for i2c write would break on some controllers, which fails at handling Repeated Start Condition. So we will just use i2c_master_send to handle write in one transanction. Changes since v1: - Remove indentation change Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ptp: ptp_ines: Use generic helper functionKurt Kanzenbach2020-08-201-63/+25
|/ | | | | | | | | In order to reduce code duplication between ptp drivers, generic helper functions were introduced. Use them. Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: only allow phase values lower than 1 periodVladimir Oltean2020-08-051-0/+13
| | | | | | | | | | | | | | The way we define the phase (the difference between the time of the signal's rising edge, and the closest integer multiple of the period), it doesn't make sense to have a phase value equal or larger than 1 period. So deny these settings coming from the user. Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: update to support 4.8.7 firmwareMin Li2020-07-313-209/+1045
| | | | | | | | | | | | With 4.8.7 firmware, adjtime can change delta instead of absolute time, which greately increases snap accuracy. PPS alignment doesn't have to be set for every single TOD change. Other minor changes includes: adding more debug logs, increasing snap accuracy for pre 4.8.7 firmware and supporting new tcs2bin format. Signed-off-by: Min Li <min.li.xe@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: add ability to configure duty cycle for periodic outputVladimir Oltean2020-07-201-6/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are external event timestampers (PHCs with support for PTP_EXTTS_REQUEST) that timestamp both event edges. When those edges are very close (such as in the case of a short pulse), there is a chance that the collected timestamp might be of the rising, or of the falling edge, we never know. There are also PHCs capable of generating periodic output with a configurable duty cycle. This is good news, because we can space the rising and falling edge out enough in time, that the risks to overrun the 1-entry timestamp FIFO of the extts PHC are lower (example: the perout PHC can be configured for a period of 1 second, and an "on" time of 0.5 seconds, resulting in a duty cycle of 50%). A flag is introduced for signaling that an on time is present in the perout request structure, for preserving compatibility. Logically speaking, the duty cycle cannot exceed 100% and the PTP core checks for this. PHC drivers that don't support this flag emit a periodic output of an unspecified duty cycle, same as before. The duty cycle is encoded as an "on" time, similar to the "start" and "period" times, and reuses the reserved space while preserving overall binary layout. Pahole reported before: struct ptp_perout_request { struct ptp_clock_time start; /* 0 16 */ struct ptp_clock_time period; /* 16 16 */ unsigned int index; /* 32 4 */ unsigned int flags; /* 36 4 */ unsigned int rsv[4]; /* 40 16 */ /* size: 56, cachelines: 1, members: 5 */ /* last cacheline: 56 bytes */ }; And now: struct ptp_perout_request { struct ptp_clock_time start; /* 0 16 */ struct ptp_clock_time period; /* 16 16 */ unsigned int index; /* 32 4 */ unsigned int flags; /* 36 4 */ union { struct ptp_clock_time on; /* 40 16 */ unsigned int rsv[4]; /* 40 16 */ }; /* 40 16 */ /* size: 56, cachelines: 1, members: 5 */ /* last cacheline: 56 bytes */ }; Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp_pch: use generic power managementVaibhav Gupta2020-06-251-34/+3
| | | | | | | | | | | | | | | | | With legacy PM, drivers themselves were responsible for managing the device's power states and takes care of register states. After upgrading to the generic structure, PCI core will take care of required tasks and drivers should do only device-specific operations. In the case of ptp_pch, after removing PCI helper functions, .suspend() and .resume() became empty-body functions. Hence, define them NULL and use dev_pm_ops. Compile-tested only. Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* treewide: replace '---help---' in Kconfig files with 'help'Masahiro Yamada2020-06-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* ptp_clock: Let the ADJ_OFFSET interface respect the ADJ_NANO flag for PHC ↵Richard Cochran2020-05-261-2/+8
| | | | | | | | | | | | | | | | devices. In commit 184ecc9eb260d5a3bcdddc5bebd18f285ac004e9 ("ptp: Add adjphase function to support phase offset control.") the PTP Hardware Clock interface expanded to support the ADJ_OFFSET offset mode. However, the implementation did not respect the traditional yet pedantic distinction between units of microseconds and nanoseconds signaled by the ADJ_NANO flag. This patch fixes the issue by adding logic to handle that flag. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_clockmatrix: Add adjphase() to support PHC write phase mode.Vincent Cheng2020-05-032-2/+98
| | | | | | | | Add idtcm_adjphase() to support PHC write phase mode. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: Add adjust_phase to ptp_clock_caps capability.Vincent Cheng2020-05-031-0/+1
| | | | | | | | | | Add adjust_phase to ptp_clock_caps capability to allow user to query if a PHC driver supports adjust phase with ioctl PTP_CLOCK_GETCAPS command. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Reviewed-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: Add adjphase function to support phase offset control.Vincent Cheng2020-05-031-0/+3
| | | | | | | | | | Adds adjust phase function to take advantage of a PHC clock's hardware filtering capability that uses phase offset control word instead of frequency offset control word. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Reviewed-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: ptp_ines: convert to devm_platform_ioremap_resourceWei Yongjun2020-04-291-7/+1
| | | | | | | | Use the helper function that wraps the calls to platform_get_resource() and devm_ioremap_resource() together. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: clockmatrix: remove unnecessary comparisonYang Yingliang2020-04-261-1/+1
| | | | | | | | | | The type of loaddr is u8 which is always '<=' 0xff, so the loaddr <= 0xff is always true, we can remove this comparison. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller2020-04-261-2/+2
|\ | | | | | | | | | | Simple overlapping changes to linux/vermagic.h Signed-off-by: David S. Miller <davem@davemloft.net>
| * ptp: Remove unneeded conversion to boolJason Yan2020-04-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | The '==' expression itself is bool, no need to convert it to bool again. This fixes the following coccicheck warning: drivers/ptp/ptp_ines.c:403:55-60: WARNING: conversion to bool not needed here drivers/ptp/ptp_ines.c:404:55-60: WARNING: conversion to bool not needed here Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ptp: idt82p33: remove unnecessary comparisonYang Yingliang2020-04-251-1/+1
| | | | | | | | | | | | | | | | | | The type of loaddr is u8 which is always '<=' 0xff, so the loaddr <= 0xff is always true, we can remove this comparison. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ptp: idt82p33: Make two variables staticYueHaibing2020-04-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Fix sparse warnings: drivers/ptp/ptp_idt82p33.c:26:5: warning: symbol 'sync_tod_timeout' was not declared. Should it be static? drivers/ptp/ptp_idt82p33.c:31:5: warning: symbol 'phase_snap_threshold' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ptp_kvm: Make kvm_ptp_lock staticYueHaibing2020-04-201-1/+1
|/ | | | | | | | | | | | Fix sparse warning: drivers/ptp/ptp_kvm.c:25:1: warning: symbol 'kvm_ptp_lock' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: Avoid deadlocks in the programmable pin code.Richard Cochran2020-03-302-2/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PTP Hardware Clock (PHC) subsystem offers an API for configuring programmable pins. User space sets or gets the settings using ioctls, and drivers verify dialed settings via a callback. Drivers may also query pin settings by calling the ptp_find_pin() method. Although the core subsystem protects concurrent access to the pin settings, the implementation places illogical restrictions on how drivers may call ptp_find_pin(). When enabling an auxiliary function via the .enable(on=1) callback, drivers may invoke the pin finding method, but when disabling with .enable(on=0) drivers are not permitted to do so. With the exception of the mv88e6xxx, all of the PHC drivers do respect this restriction, but still the locking pattern is both confusing and unnecessary. This patch changes the locking implementation to allow PHC drivers to freely call ptp_find_pin() from their .enable() and .verify() callbacks. V2 ChangeLog: - fixed spelling in the kernel doc - add Vladimir's tested by tag Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reported-by: Yangbo Lu <yangbo.lu@nxp.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: add VMware virtual PTP clock driverVivek Thampi2020-03-063-0/+157
| | | | | | | | | | | | | | | | | | Add a PTP clock driver called ptp_vmw, for guests running on VMware ESXi hypervisor. The driver attaches to a VMware virtual device called "precision clock" that provides a mechanism for querying host system time. Similar to existing virtual PTP clock drivers (e.g. ptp_kvm), ptp_vmw utilizes the kernel's PTP hardware clock API to implement a clock device that can be used as a reference in Chrony for synchronizing guest time with host. The driver is only applicable to x86 guests running in VMware virtual machines with precision clock virtual device present. It uses a VMware specific hypercall mechanism to read time from the device. Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Vivek Thampi <vithampi@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: Add a ptp clock driver for IDT 82P33 SMU.Min Li2020-02-244-0/+1192
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IDT 82P33 Synchronization Management Unit (SMU) family provides tools to manage timing references, clock sources and timing paths for IEEE 1588 / Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) based clocks. The device supports up to three independent timing paths that control: PTP clock synthesis; SyncE clock generation; and general purpose frequency translation. The device supports physical layer timing with Digital PLLs (DPLLs) and it supports packet based timing with Digitally Controlled Oscillators (DCOs). This patch adds support for ptp clock based on the device. Changes since v1: - As suggested by Richard Cochran: 1. Replace _mask_bit_count with the existing hweight8 2. Prefix all functions with idt82p33 3. Fix white space issues in Kconfig and Makefile 4. Remove forward declaration 5. Use adjfine instead of adjfreq for better resolution - As suggested by David Miller: 1. Replace CHAN_INIT macro with a static function idt82p33_channel_init 2. Employ reverse christmas tree ordering for local variables 3. Fix indentation problem by appropriate number of TAB then SPACE character Signed-off-by: Min Li <min.li.xe@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp_qoriq: drop the code of alarmYangbo Lu2020-02-171-28/+1
| | | | | | | | | The alarm function hadn't been supported by PTP clock driver. The recommended solution PHC + phc2sys + nanosleep provides best performance. So drop the code of alarm in ptp_qoriq driver. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/netDavid S. Miller2020-01-191-2/+2
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| * ptp: free ptp device pin descriptors properlyVladis Dronov2020-01-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a bug in ptp_clock_unregister(), where ptp_cleanup_pin_groups() first frees ptp->pin_{,dev_}attr, but then posix_clock_unregister() needs them to destroy a related sysfs device. These functions can not be just swapped, as posix_clock_unregister() frees ptp which is needed in the ptp_cleanup_pin_groups(). Fix this by calling ptp_cleanup_pin_groups() in ptp_clock_release(), right before ptp is freed. This makes this patch fix an UAF bug in a patch which fixes an UAF bug. Reported-by: Antti Laakso <antti.laakso@intel.com> Fixes: a33121e5487b ("ptp: fix the race between the release of ptp_clock and cdev") Link: https://lore.kernel.org/netdev/3d2bd09735dbdaf003585ca376b7c1e5b69a19bd.camel@intel.com/ Signed-off-by: Vladis Dronov <vdronov@redhat.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ptp: ixp46x: move adjacent to ethernet driverArnd Bergmann2020-01-123-344/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ixp46x ptp driver has a somewhat unusual setup, where the ptp driver and the ethernet driver are in different directories but access the same registers that are defined a platform specific header file. Moving everything into drivers/net/ makes it look more like most other ptp drivers and allows compile-testing this driver on other targets. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | ptp: clockmatrix: Rework clockmatrix version information.Vincent Cheng2020-01-072-64/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify and fix the version information displayed by the driver. The new info better relects what is needed to support the hardware. Prev: Version: 4.8.0, Pipeline 22169 0x4001, Rev 0, Bond 5, CSR 311, IRQ 2 New: Version: 4.8.0, Id: 0x4001 Hw Rev: 5 OTP Config Select: 15 - Remove pipeline, CSR and IRQ because version x.y.z already incorporates this information. - Remove bond number because it is not used. - Remove rev number because register was not implemented, always 0 - Add HW Rev ID register to replace rev number - Add OTP config select to show the user configuration chosen by the configurable GPIO pins on start-up Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ptp: ptp_clockmatrix: constify copied structureJulia Lawall2020-01-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | The idtcm_caps structure is only copied into another structure, so make it const. The opportunity for this change was found using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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