linux-toradex.git/drivers/mcb, branch v4.14-rc7

Merge tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2017-09-05T18:08:17+00:00

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver update for 4.14-rc1.

  Lots of different stuff in here, it's been an active development cycle
  for some reason. Highlights are:

   - updated binder driver, this brings binder up to date with what
     shipped in the Android O release, plus some more changes that
     happened since then that are in the Android development trees.

   - coresight updates and fixes

   - mux driver file renames to be a bit "nicer"

   - intel_th driver updates

   - normal set of hyper-v updates and changes

   - small fpga subsystem and driver updates

   - lots of const code changes all over the driver trees

   - extcon driver updates

   - fmc driver subsystem upadates

   - w1 subsystem minor reworks and new features and drivers added

   - spmi driver updates

  Plus a smattering of other minor driver updates and fixes.

  All of these have been in linux-next with no reported issues for a
  while"

* tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (244 commits)
  ANDROID: binder: don't queue async transactions to thread.
  ANDROID: binder: don't enqueue death notifications to thread todo.
  ANDROID: binder: Don't BUG_ON(!spin_is_locked()).
  ANDROID: binder: Add BINDER_GET_NODE_DEBUG_INFO ioctl
  ANDROID: binder: push new transactions to waiting threads.
  ANDROID: binder: remove proc waitqueue
  android: binder: Add page usage in binder stats
  android: binder: fixup crash introduced by moving buffer hdr
  drivers: w1: add hwmon temp support for w1_therm
  drivers: w1: refactor w1_slave_show to make the temp reading functionality separate
  drivers: w1: add hwmon support structures
  eeprom: idt_89hpesx: Support both ACPI and OF probing
  mcb: Fix an error handling path in 'chameleon_parse_cells()'
  MCB: add support for SC31 to mcb-lpc
  mux: make device_type const
  char: virtio: constify attribute_group structures.
  Documentation/ABI: document the nvmem sysfs files
  lkdtm: fix spelling mistake: "incremeted" -> "incremented"
  perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data file
  nvmem: include linux/err.h from header
  ...

mcb: Fix an error handling path in 'chameleon_parse_cells()'

2017-08-31T16:49:41+00:00

If 'chameleon_get_bar()' fails, we will return 0, which mean success.
We should return the corresponding error code instead.

Remove the useless initialisation of 'ret' which was hiding the issue.
(if 'ret' is not set, gcc generates a warning ("warning: ‘ret’ may be used
uninitialized in this function"))

Signed-off-by: Christophe JAILLET 
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

MCB: add support for SC31 to mcb-lpc

2017-08-31T16:49:41+00:00

This patch adds the resources and DMI ID's for the MEN SC31,
which uses a different address region to map the LPC bus than
the one used for the existing SC24.

Signed-off-by: Michael Moese 
[jth add stable tag]
Cc:  (v4.9+)
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mcb: introduce mcb_get_resource()

2017-08-28T18:51:22+00:00

Introduce mcb_get_resource() as a common accessor to a mcb device's memory or
IRQ resources.

Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mcb: fix compiler warning logical-op in mcb-parse.c

2016-11-15T09:52:37+00:00

The expression was clearly wrong, the logical AND of expressions
must be changed to a logical OR.

Reported-by: David Binderman 
Signed-off-by: Michael Moese 
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mcb: Add a dma_device to mcb_device

2016-09-27T10:33:47+00:00

When performing DMA operations on a MCB device, the device needed
for using the DMA API is "mcb_device->bus_carrier".
This is rather lengthy, so a shortcut is introduced to struct mcb_device
in order to ensure the MCB device driver uses the correct device for DMA
operations.

Signed-off-by: Michael Moese 
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mcb: Enable PCI bus mastering by default

2016-09-27T10:33:47+00:00

In order to successfully perform DMA operations on PCI devices,
it is necessary to enble PCI bus mastering, so enable it by default.

Signed-off-by: Michael Moese 
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mcb: remove sub-device handling code

2016-08-31T11:16:24+00:00

The MEN Chameleon specification states that a chameleon FPGA can include a
bridge descriptor, which then opens up a new bus behind this bridge. MCB
included subdevice handling code in the core, but no support for bus
descriptors in the parser, due to a lack of hardware access.

As this is technically dead code, but it gets executed on a device add,
I've decided to remove it.

Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mcb: Added bar descriptor support for non PCI bus MCB carrier

2016-08-31T11:16:24+00:00

Added support for the bar descriptor. This type is used for FPGAs
connect to the LPC or to a non PCI bus.

The Bar descriptor could have a maximum of 6 BARs. Each of the
devices within the FPGA could be mapped to a different BAR.
The BAR descriptor is comparable to the PCI header.

Signed-off-by: Andreas Werner 
[ free bar descriptor in the non-error case ]
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

mcb: Added support for LPC or non PCI based MCB carrier

2016-08-31T11:16:24+00:00

Add support for MCB bases FPGAs connected to the LPC or
non PCI Bus.

This driver currently supports the SC24 board. The FPGA
is connected to the LPC bus and is identified using the BIOS
DMI string.

Signed-off-by: Andreas Werner 
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman