linux-toradex.git/drivers/bus/brcmstb_gisb.c, branch v4.2.3

bus: brcmstb_gisb: Honor the "big-endian" and "native-endian" DT properties

2015-05-29T04:00:20+00:00

On chips strapped for BE, we'll need to use ioread32be/iowrite32be instead of
ioread32/iowrite32.

Signed-off-by: Kevin Cernekee 
Signed-off-by: Florian Fainelli

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09+00:00

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev__once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...

Merge branch 'brcm/stb-smp-uart' into next/drivers

2014-12-08T16:16:26+00:00

This resolves a nonobvious merge conflict that I got wrong the
first time.

* brcm/stb-smp-uart:
  bus: brcmstb_gisb: save and restore GISB timeout
  bus: brcmstb_gisb: register the fault code hook
  ARM: brcmstb: Kconfig: drop unneeded symbol selections
  ARM: brcmstb: reintroduce SMP support
  ARM: brcmstb: add debug UART for earlyprintk support

Conflicts:
	drivers/bus/brcmstb_gisb.c

Signed-off-by: Arnd Bergmann 
Reported-by: Florian Fainelli

Merge tag 'arm-soc/for-3.19/brcmstb-drivers' of https://github.com/brcm/linux into next/drivers

2014-12-04T15:44:05+00:00

This pull request contains the following changes to the Broadcom GISB bus
arbiter from Kevin Cernekee:

- Extend brcmstb GISB bus driver to work on MIPS (currently ARM-only) and support
  65nm and 40nm MIPS-based chips such as: BCM7038, BCM7400 and BCM7435

* tag 'arm-soc/for-3.19/brcmstb-drivers' of https://github.com/brcm/linux:
  bus: brcmstb_gisb: Add register offset tables for older chips
  bus: brcmstb_gisb: Look up register offsets in a table
  bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses
  bus: brcmstb_gisb: Make the driver buildable on MIPS

Conflicts:
	drivers/bus/brcmstb_gisb.c

Signed-off-by: Arnd Bergmann

bus: brcmstb_gisb: Add register offset tables for older chips

2014-11-28T23:44:44+00:00

This will select the appropriate register layout based on the DT
"compatible" string.

Signed-off-by: Kevin Cernekee 
Signed-off-by: Florian Fainelli

bus: brcmstb_gisb: Look up register offsets in a table

2014-11-28T23:44:43+00:00

There are at least 4 incompatible variations of this hardware block,
so let's use the ARB_* constants as a table index instead of hardcoding
specific register offsets.  Also, allow for the possibility of adding
old devices that are missing some of the registers.

Signed-off-by: Kevin Cernekee 
Signed-off-by: Florian Fainelli

bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses

2014-11-28T23:44:43+00:00

These will be used to abstract out chip-to-chip differences.

Signed-off-by: Kevin Cernekee 
Signed-off-by: Florian Fainelli

bus: brcmstb_gisb: Make the driver buildable on MIPS

2014-11-28T23:44:42+00:00

BCM7xxx ARM and MIPS platforms share a similar hardware block for
reporting GISB errors, so they both benefit from the use of this driver.
Conditionally compile the ARM-specific bus error handler so that the
GISB error IRQ handler works on other architectures.

Signed-off-by: Kevin Cernekee 
Signed-off-by: Florian Fainelli

bus: brcmstb_gisb: resolve section mismatch

2014-11-21T11:32:43+00:00

Commit f1bee783dd37 moved the call to hook_fault_code in
brcmstb_gisb_arb_probe() which now calls a function annotated with __init, so
this one must also be annotated with __init.

In order to avoid introducing another section mismatch, call
platform_driver_probe() manually and remove the .probe assignment from
brcmstb_gisb_arb_driver, this is very similar to what
drivers/pci/host/pci-imx6.c does since we basically have the same constraints
here.

Fixes: f1bee783dd37 ("bus: brcmstb_gisb: register the fault code hook")
Signed-off-by: Florian Fainelli 
Signed-off-by: Arnd Bergmann

bus: brcmstb_gisb: save and restore GISB timeout

2014-10-20T19:44:42+00:00

When the system enters S3, we will lose the GISB timeout value we have
configured, make sure that we do save this timeout value, and restore
this timeout value prior to re-enabling interrupts such that the GISB
timeout interrupt will fire with the expected timeout.

Signed-off-by: Florian Fainelli