linux-toradex.git/drivers/dma/sa11x0-dma.c, branch v4.4.95

dmaengine: sa11x0: report slave capabilities to upper layers

2015-04-17T17:54:35+00:00

Fix the following warning by initializing necessary fields in the dma_device
structure.

------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:863 dma_async_device_register+0x2b4/0x4f0()
this driver doesn't support generic slave capabilities reporting
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc5+ #10
Hardware name: Sharp-Collie
[] (unwind_backtrace) from [] (show_stack+0x10/0x14)
[] (show_stack) from [] (warn_slowpath_common+0x74/0xac)
[] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40)
[] (warn_slowpath_fmt) from [] (dma_async_device_register+0x2b4/0x4f0)
[] (dma_async_device_register) from [] (sa11x0_dma_probe+0x21c/0x358)
[] (sa11x0_dma_probe) from [] (platform_drv_probe+0x30/0x94)
[] (platform_drv_probe) from [] (driver_probe_device+0x84/0x234)
[] (driver_probe_device) from [] (__driver_attach+0x98/0x9c)
[] (__driver_attach) from [] (bus_for_each_dev+0x74/0xa4)
[] (bus_for_each_dev) from [] (bus_add_driver+0x13c/0x1e8)
[] (bus_add_driver) from [] (driver_register+0x78/0xf8)
[] (driver_register) from [] (do_one_initcall+0x84/0x1f4)
[] (do_one_initcall) from [] (kernel_init_freeable+0xf8/0x1b4)
[] (kernel_init_freeable) from [] (kernel_init+0x8/0xf0)
[] (kernel_init) from [] (ret_from_fork+0x14/0x2c)
---[ end trace e188b8fe0e782e75 ]---

Signed-off-by: Dmitry Eremin-Solenikov 
Acked-by: Russell King 
Signed-off-by: Vinod Koul

dmaengine: sa11x0: remove device_alloc_chan_resources handler

2015-03-18T17:15:49+00:00

Now that device_alloc_chan_resources handler in not mandatory, remove dummy
implementations

Signed-off-by: Vinod Koul

dmaengine: sa11x0: Fix warning and compilation errors

2015-01-18T14:31:15+00:00

The sa11x0_dma_resume conflicts between the dmaengine device_resume callback
and the dev_pm_ops resume implementation.

Also remove some unused variables at the same time.

Signed-off-by: Maxime Ripard 
Signed-off-by: Vinod Koul

dmaengine: sa11x0: Split device_control

2014-12-22T07:02:15+00:00

Split the device_control callback of the SA-11x0 DMA driver to make use of the
newly introduced callbacks, that will eventually be used to retrieve slave
capabilities.

Signed-off-by: Maxime Ripard 
Signed-off-by: Vinod Koul

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
  ...

dmaengine: sa11x0: Remove chancnt affectations

2014-11-06T06:02:45+00:00

chanctnt is already filled by dma_async_device_register, which uses the channel
list to know how much channels there is.

Since it's already filled, we can safely remove it from the drivers' probe
function.

Signed-off-by: Maxime Ripard 
Signed-off-by: Vinod Koul

dma: drop owner assignment from platform_drivers

2014-10-20T14:20:28+00:00

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang

dmaengine: Remove the context argument to the prep_dma_cyclic operation

2014-08-04T08:11:50+00:00

The argument is always set to NULL and never used. Remove it.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Vinod Koul

dmaengine: sa11x0: remove broken #ifdef

2014-05-21T06:10:49+00:00

The sa11x0_dma_pm_ops unconditionally reference sa11x0_dma_resume
and sa11x0_dma_suspend, which currently breaks if CONFIG_PM_SLEEP
is disabled.

There is probably a better way to remove the reference in this
case, but the safe choice is to have the suspend/resume code always
built in the driver.

Signed-off-by: Arnd Bergmann 
Cc: Russell King 
Cc: dmaengine@vger.kernel.org
Cc: Vinod Koul 
Cc: Dan Williams 
Signed-off-by: Vinod Koul

dmaengine: sa11x0: use DMA_COMPLETE for dma completion status

2013-10-25T05:46:13+00:00

Acked-by: Dan Williams 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul