kernel.git/drivers/ptp/ptp_clock.c, branch linux-3.17.y

ptp: validate the requested frequency adjustment.

2014-04-28T17:28:43Z

PTP Hardware Clock drivers specify a maximum frequency adjustment that their clocks can accommodate. Normally, user space programs will want to respect the advertised limits. However, no kernel or driver code checks that the dialed frequency offset is within the bounds, and out of range values can lead to surprising results. This patch fixes the issue by rejecting bad values. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller

ptp: introduce programmable pins.

2014-03-21T18:21:13Z

This patch adds a pair of new ioctls to the PTP Hardware Clock device interface. Using the ioctls, user space programs can query each pin to find out its current function and also reprogram a different function if desired. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller

PTP: convert class code to use dev_groups

2013-07-27T01:05:17Z

The dev_attrs field of struct class is going away soon, dev_groups should be used instead. This converts the ptp class code to use the correct field. Acked-by: Richard Cochran Signed-off-by: Greg Kroah-Hartman

ptp: dynamic allocation of PHC char devices

2013-04-12T22:22:45Z

As network adapters supporting PTP are becoming more common, machines with many NICs suddenly have many PHCs, too. The current limit of eight /dev/ptp* char devices (and thus, 8 network interfaces with PHC) is insufficient. Let the ptp driver allocate the char devices dynamically. Tested with 28 PHCs, removing and re-adding some of them. Thanks to Ben Hutchings for advice leading to simpler and cleaner patch. Signed-off-by: Jiri Benc Acked-by: Richard Cochran Signed-off-by: David S. Miller

ptp: link the phc device to its parent device

2012-09-22T19:42:38Z

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 Acked-by: Ben Hutchings Acked-by: Jeff Kirsher Signed-off-by: David S. Miller

ptp: provide the clock's adjusted frequency

2012-09-22T19:42:08Z

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 Signed-off-by: David S. Miller

ptp: remember the adjusted frequency

2012-09-22T19:41:29Z

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 Signed-off-by: David S. Miller

pps/ptp: Allow PHC devices to adjust PPS events for known delay

2012-09-07T20:13:28Z

Initial version by Stuart Hodgson 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

ptp: Add a method for obtaining the device index.

2012-04-04T09:28:45Z

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 Signed-off-by: David S. Miller

phc: Update author's email address.

2012-03-17T08:41:43Z

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 Signed-off-by: David S. Miller