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  1. 08 8月, 2018 3 次提交
  3. 06 8月, 2018 1 次提交
  5. 05 8月, 2018 4 次提交
  7. 02 8月, 2018 20 次提交
  9. 29 7月, 2018 4 次提交
  11. 27 7月, 2018 6 次提交
    • G
      Merge tag 'fsi-updates-2018-07-27' of... · 2d8bc619
      由 Greg Kroah-Hartman 提交于 
      Merge tag 'fsi-updates-2018-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/linux-fsi into char-misc-next

Ben writes:

Last round of FSI updates for 4.19

This adds a few fixes for things reported since the last merge,
and the latch batch of changes pending for FSI for 4.19.

That batch is a rather mechanical conversion of the misc devices
into proper char devices.

The misc devices were ill suited, the minor space for them is
limited and we can have a lot of chips in a system creating FSI
devices.

This also allows us to better control (and fix) object lifetime
getting rid of the bad devm_kzalloc() of the structures containing
the devices etc...

Finally, we add a chardev to the core FSI that provides raw CFAM
access to FSI slaves as a replacement for the current "raw" binary
sysfs file which will be ultimately deprecated and removed.
      2d8bc619
    • B
      fsi: Prevent multiple concurrent rescans · 9840fcd8
      由 Benjamin Herrenschmidt 提交于 
      The bus scanning process isn't terribly good at parallel attempts
at rescanning the same bus. Let's have a per-master mutex protecting
the scanning process.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      9840fcd8
    • B
      fsi: Add cfam char devices · d1dcd678
      由 Benjamin Herrenschmidt 提交于 
      This aims to deprecate the "raw" sysfs file used for directly
accessing the CFAM and instead use a char device like the
other sub drivers.

Since it reworks the slave creation code and adds a cfam device
type, we also use the opportunity to convert the attributes
to attribute groups and add a couple more.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      d1dcd678
    • B
      fsi: scom: Convert to use the new chardev · d8f45876
      由 Benjamin Herrenschmidt 提交于 
      This converts FSI scom to use the new fsi-core controlled
chardev allocator and use a real cdev instead of a miscdev.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      d8f45876
    • B
      fsi: sbefifo: Convert to use the new chardev · 8b052dd6
      由 Benjamin Herrenschmidt 提交于 
      This converts FSI sbefifo to use the new fsi-core controlled
chardev allocator and use a real cdev instead of a miscdev.

One side effect is to fix the object lifetime by removing
the use of devm_kzalloc() for something that contains kobjects,
and using proper reference counting.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      8b052dd6
    • B
      fsi: Add new central chardev support · 0ab5fe53
      由 Benjamin Herrenschmidt 提交于 
      The various FSI devices (sbefifo, occ, scom, more to come)
currently use misc devices.

This is problematic as the minor device space for misc is
limited and there can be a lot of them. Also it limits our
ability to move them to a dedicated /dev/fsi directory or
to be smart about device naming and numbering.

It also means we have IDAs on every single of these drivers

This creates a common fsi "device_type" for the optional
/dev/fsi grouping and a dev_t allocator for all FSI devices.

"Legacy" devices get to use a backward compatible numbering
scheme (as long as chip id <16 and there's only one copy
of a given unit type per chip).

A single major number and a single IDA are shared for all
FSI devices.

This doesn't convert the FSI device drivers to use the new
scheme yet, they will be converted individually.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      0ab5fe53
  13. 26 7月, 2018 2 次提交