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path: root/drivers/ptp
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2012-11-26ptp: reduce stack usage when measuring the system time offsetRichard Cochran
This patch removes the large buffer from the stack of the system offset ioctl and replaces it with a kmalloced buffer. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-26ptp: reduce stack usage when reading external time stampsRichard Cochran
This patch removes the large buffer from the stack of the read file operation and replaces it with a kmalloced buffer. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-17pch_gbe, ptp_pch: Fix the dependency direction between these driversBen Hutchings
In commit a24006ed12616bde1bbdb26868495906a212d8dc ('ptp: Enable clock drivers along with associated net/PHY drivers') I wrongly made PTP_1588_CLOCK_PCH depend on PCH_GBE. The dependency is really the other way around. Therefore make PCH_GBE select PTP_1588_CLOCK_PCH and remove the 'default y' from the latter. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01ptp: add an ioctl to compare PHC time with system timeRichard Cochran
This patch adds an ioctl for PTP Hardware Clock (PHC) devices that allows user space to measure the time offset between the PHC and the system clock. Rather than hard coding any kind of estimation algorithm into the kernel, this patch takes the more flexible approach of just delivering an array of raw clock readings. In that way, the user space clock servo may be adapted to new and different hardware clocks. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01ptp: Enable clock drivers along with associated net/PHY driversBen Hutchings
Where a PTP clock driver is associated with a net or PHY driver, it should be enabled automatically whenever that driver is enabled. Therefore: - Make PTP clock drivers select rather than depending on PTP_1588_CLOCK - Remove separate boolean options for PTP clock drivers that are built as part of net driver modules. (This also fixes cases where the PTP subsystem is wrongly forced to be built-in.) - Set 'default y' for PTP clock drivers that depend on specific net drivers but are built separately Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01ptp: Make PTP_1588_CLOCK select rather than depend on PPSBen Hutchings
PTP hardware clock drivers that select PTP_1588_CLOCK must currently also select PPS. For those drivers that don't, the user must enable PPS, then enable PTP_1588_CLOCK, then the driver. Simplify things for developers and users by putting this selection in one place. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01pps, ptp: Remove dependencies on EXPERIMENTALBen Hutchings
These are now established subsystems, and we want drivers to be able to select PPS and PTP_1588_CLOCK without depending on EXPERIMENTAL. Further, the use of EXPERIMENTAL is now deprecated in general. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-22ptp: link the phc device to its parent deviceRichard Cochran
PTP Hardware Clock devices appear as class devices in sysfs. This patch changes the registration API to use the parent device, clarifying the clock's relationship to the underlying device. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-22ptp: provide the clock's adjusted frequencyRichard Cochran
If the timex.mode field indicates a query, then we provide the value of the current frequency adjustment. [ Get rid of extraneous empty lines -DaveM ] Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-22ptp: remember the adjusted frequencyRichard Cochran
This patch adds a field to the representation of a PTP hardware clock in order to remember the frequency adjustment value dialed by the user. Adding this field will let us answer queries in the manner of adjtimex in a follow on patch. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-07pps/ptp: Allow PHC devices to adjust PPS events for known delayBen Hutchings
Initial version by Stuart Hodgson <smhodgson@solarflare.com> Some PHC device drivers may deliver PPS events with a significant and variable delay, but still be able to measure precisely what that delay is. Add a pps_sub_ts() function for subtracting a delay from the timestamp(s) in a PPS event, and a PTP event type (PTP_CLOCK_PPSUSR) for which the caller provides a complete PPS event. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-05-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial updates from Jiri Kosina: "As usual, it's mostly typo fixes, redundant code elimination and some documentation updates." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (57 commits) edac, mips: don't change code that has been removed in edac/mips tree xtensa: Change mail addresses of Hannes Weiner and Oskar Schirmer lib: Change mail address of Oskar Schirmer net: Change mail address of Oskar Schirmer arm/m68k: Change mail address of Sebastian Hess i2c: Change mail address of Oskar Schirmer net: Fix tcp_build_and_update_options comment in struct tcp_sock atomic64_32.h: fix parameter naming mismatch Kconfig: replace "--- help ---" with "---help---" c2port: fix bogus Kconfig "default no" edac: Fix spelling errors. qla1280: Remove redundant NULL check before release_firmware() call remoteproc: remove redundant NULL check before release_firmware() qla2xxx: Remove redundant NULL check before release_firmware() call. aic94xx: Get rid of redundant NULL check before release_firmware() call tehuti: delete redundant NULL check before release_firmware() qlogic: get rid of a redundant test for NULL before call to release_firmware() bna: remove redundant NULL test before release_firmware() tg3: remove redundant NULL test before release_firmware() call typhoon: get rid of redundant conditional before all to release_firmware() ...
2012-05-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2012-05-16ptp_pch: Add missing #include <linux/slab.h>Geert Uytterhoeven
drivers/ptp/ptp_pch.c: In function 'pch_remove': drivers/ptp/ptp_pch.c:576:2: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration] drivers/ptp/ptp_pch.c: In function 'pch_probe': drivers/ptp/ptp_pch.c:587:2: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration] Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-21pch_gbe: correct receive time stamp filteringTakahiro Shimizu
This patch fixes the driver so that multicast PTP event messages can be recognized by the hardware time stamping unit. The station address register must be set according to the desired transport type. [ RC - Rebased Takahiro's changes and wrote a commit message explaining the changes. ] Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com> Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-21pch_gbe: do not set the channel control registerTakahiro Shimizu
We will let the pch_gbe code do that according to the receive time stamp filter. [ RC - Rebased Takahiro's changes and wrote a commit message explaining the changes. ] Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com> Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-21pch_gbe: export a method to set the receive match addressTakahiro Shimizu
The code in phc_gbe_main will need to call this method in order to set the station address register according to the receive time stamping filter. [ RC - Rebased Takahiro's changes and wrote a commit message explaining the changes. ] Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com> Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-21pch_gbe: scale time stamps to nanosecondsTakahiro Shimizu
This patch fixes the helper functions that give the transmit and receive time stamps to return nanoseconds, instead of arbitrary clock ticks. [ RC - Rebased Takahiro's changes and wrote a commit message explaining the changes. ] Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com> Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-16Fix typo in various Kconfig fileMasanari Iida
Correct spelling typo in various Kconfig file. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-04-12ixp4xx_eth: Fix up the get_ts_info ethtool method.Richard Cochran
Commit e77bd1ec121ee4163a6b42a44e87b2e382c39e04 added support for a new ethtool function, but that cannot compile due to a misnamed global variable. Not that it really matters (since the IXP4xx does compile either, as of about Linux 3.1) but just in case, this patch fixes the misnamed variable in the PHC driver. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-04ixp4xx_eth: Support the get_ts_info ethtool method.Richard Cochran
Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-04ptp: Add a method for obtaining the device index.Richard Cochran
This commit adds a method that MAC drivers may call in order to find out the device number of their associated PTP Hardware Clock. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-17phc: Update author's email address.Richard Cochran
This commit brings the author email address macros up to date for four modules in the PTP Hardware Clock subsystem. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-09ptp_pch: rename pch_pcidev to pci_driver to fix section mismatch warnings.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-09supports eg20t ptp clockTakahiro Shimizu
Supports EG20T ptp clock in the driver Changes e-mail address. Adds number. Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06ptp: Fix clock_getres() implementationThomas Gleixner
The clock_getres() function must return the resolution in the timespec argument and return 0 for success. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <john.stultz@linaro.org> Cc: stable@kernel.org Cc: Richard Cochran <richard.cochran@omicron.at>
2011-06-01ptp: Fix some locking bugs in ptp_read()Dan Carpenter
In ptp_read there is an unlock missing on an error path, and a double unlock on another error path. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Richard Cochran <richard.cochran@omicron.at> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-06-01ptp: Return -EFAULT on copy_to_user() errorsDan Carpenter
copy_to_user() returns the number of bytes remaining, but we want a negative error code in ptp_ioctl. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Richard Cochran <richard.cochran@omicron.at> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-23ptp: Added a clock driver for the National Semiconductor PHYTER.Richard Cochran
This patch adds support for the PTP clock found on the DP83640. The basic clock operations and one external time stamp have been implemented. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-23ptp: Added a clock driver for the IXP46x.Richard Cochran
This patch adds a driver for the hardware time stamping unit found on the IXP465. The basic clock operations and an external trigger are implemented. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: John Stultz <john.stultz@linaro.org> Acked-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-23ptp: Added a clock that uses the eTSEC found on the MPC85xx.Richard Cochran
The eTSEC includes a PTP clock with quite a few features. This patch adds support for the basic clock adjustment functions, plus two external time stamps, one alarm, and the PPS callback. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: John Stultz <john.stultz@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-23ptp: Added a brand new class driver for ptp clocks.Richard Cochran
This patch adds an infrastructure for hardware clocks that implement IEEE 1588, the Precision Time Protocol (PTP). A class driver offers a registration method to particular hardware clock drivers. Each clock is presented as a standard POSIX clock. The ancillary clock features are exposed in two different ways, via the sysfs and by a character device. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John Stultz <john.stultz@linaro.org>
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