linux-toradex.git/drivers/spi/spi-sirf.c, branch v4.9.34

spi: sirf: add the reset for USP-based SPI

2015-05-26T10:39:16+00:00

USP-based SPI need a disable and enable, otherwise it doesn't work.
this patch adds it as HW initialization.

Signed-off-by: Qipan Li 
Signed-off-by: Barry Song 
Signed-off-by: Mark Brown

spi: sirf: remove the allocation of dummypage

2015-05-26T10:38:46+00:00

this job has been done by spi core.

Signed-off-by: Qipan Li 
Signed-off-by: Barry Song 
Acked-by: Geert Uytterhoeven 
Signed-off-by: Mark Brown

spi: sirf: add support for USP-based SPI

2015-05-20T18:05:40+00:00

USP is a general purpose serial port in SiRFSoC, which can work as SPI.
the most data flow of USP and pure SPI is same with main differences
in registers layout.
this patch moves registers layout to private data, and use flags to
differentiate other minor differences between prima2-spi, prima2-usp
and atlas7-usp for hardware configuration.

Signed-off-by: Qipan Li 
Signed-off-by: Barry Song 
Signed-off-by: Mark Brown

spi: sirf: replace kmalloc by devm_kzalloc

2015-05-07T09:46:11+00:00

Signed-off-by: Qipan Li 
Signed-off-by: Barry Song 
Signed-off-by: Mark Brown

spi: sirf: request and free cs gpio in setup and cleanup callbacks

2015-05-06T18:47:49+00:00

move spi controller's gpio request work out from probe() to spi device
register stage, so after spi device register spi controller can deactive
device's gpio chipselect. old code can't do it because gpio request has
not be done until device register is finised in spi_bitbang_start.
and add cleanup function to free CS gpio.

Signed-off-by: Qipan Li 
Signed-off-by: Barry Song 
Signed-off-by: Mark Brown

spi: sirf: replace BUG condition by error code for unsupported transfer

2015-04-27T19:53:28+00:00

return error for unsupported bits-per-word format, BUG() is not right
for this scenerios as we are not an ASSERT but an error handler.

Signed-off-by: Qipan Li 
Signed-off-by: Barry Song 
Signed-off-by: Mark Brown

spi: sirf: drop redundant sirf,marco-spi compatible string

2015-01-06T17:38:59+00:00

"sirf,marco-spi" is redundant as all SPI controllers in CSR SiRFSoC are
compatible with prima2-spi.
at the same time, the whole marco project was dropped and its replacement
atlas7 is also compatible with prima2 in SPI.

Signed-off-by: Barry Song 
Signed-off-by: Mark Brown

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 remote-tracking branches 'spi/topic/mxs', 'spi/topic/pxa', 'spi/topic/rockchip', 'spi/topic/samsung' and 'spi/topic/sirf' into spi-next

2014-12-08T12:17:17+00:00

spi: sirf: reset SPI controller in init stage

2014-11-21T18:11:21+00:00

in SPI boot mode, romcode uses SPI controller to fetch data from NOR
flash. Here we need to reset the hardware IP to restore its state.

Signed-off-by: Qipan Li 
Signed-off-by: Barry Song 
Signed-off-by: Mark Brown