linux-stable.git/drivers/iio/buffer, branch v4.13.2

iio: buffer-dmaengine: Add missing header buffer_impl.h

2017-06-13T19:56:05+00:00

Add buffer_impl.h as buffer.h was split into interface for using and
for internals. Without this industrialio-buffer-dmaengine.c fails
to compile.

Fixes:
commit 33dd94cb972175249258329c4aaffddcc82c2005 ("iio:buffer.h - split
into buffer.h and buffer_impl.h")

Signed-off-by: Phil Reid 
Signed-off-by: Jonathan Cameron

iio: buffer-dma: Add missing header buffer_impl.h

2017-06-13T19:55:59+00:00

Add buffer_impl.h as buffer.h was split into interface for using and
for internals. Without this industrialio-buffer-dma.c fails
to compile.

Fixes:
commit 33dd94cb972175249258329c4aaffddcc82c2005 ("iio:buffer.h - split
into buffer.h and buffer_impl.h")

Signed-off-by: Phil Reid 
Signed-off-by: Jonathan Cameron

iio:buffer.h - split into buffer.h and buffer_impl.h

2017-01-10T19:54:55+00:00

buffer.h supplies everything needed for devices using buffers.
buffer_impl.h supplies access to the internals as needed to write
a buffer implementation.

This was really motivated by the mess that turned up in the
kernel-doc documentation pulled in by the new sphinx docs.
It made it clear that our logical separations in headers were
generally terrible.  The buffer case was easy to sort out without
greatly effecting drivers so here it is.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Lars-Peter Clausen

iio:buffer.h include pushdown into buffer implementations

2017-01-10T19:54:53+00:00

These were only getting access to the internals of struct iio_dev via
the include of iio.h within buffer.h.  This should always have been
explicitly included by the buffer implementations themselves.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Lars-Peter Clausen

iio:kfifo_buf header include push down.

2017-01-10T19:54:53+00:00

As a precursor to splitting buffer.h, lets make sure all drivers
include the relevant headers rather than relying on picking them
up from kfifo_buf.h.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Lars-Peter Clausen

iio: add resource managed triggered buffer init helpers

2016-09-04T14:42:46+00:00

Add resource managed devm_iio_triggered_buffer_setup() and
devm_iio_triggered_buffer_cleanup() to automatically clean up triggered
buffers setup by IIO drivers, thus leading to simplified IIO drivers code.

Signed-off-by: Gregor Boirie 
Signed-off-by: Jonathan Cameron

iio: buffer-callback: allow getting underlying iio_dev

2016-08-21T10:47:19+00:00

Add iio_channel_cb_get_iio_dev function to allow getting the
underlying iio_dev. This is useful for setting the trigger of the
consumer ADC device.

Signed-off-by: Matt Ranostay 
Signed-off-by: Jonathan Cameron

iio: buffer-dma: Use ARRAY_SIZE in for loop range

2016-06-27T20:06:40+00:00

Use the ARRAY_SIZE macro in the for loops that access queue->fileio.blocks.
Macro is already used in a couple of places where this access occurs,
but range was hardcoded in these locations.

Signed-off-by: Phil Reid 
Acked-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

iio: buffer-dmaengine: Use dmaengine_terminate_sync()

2016-02-09T21:05:17+00:00

The DMAengine framework gained support for synchronized transfer
termination. Use the new dmaengine_terminate_sync() function instead of
dmaengine_terminate_all(), this avoids a potential race condition when
disabling the buffer.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

iio: Add a DMAengine framework based buffer

2015-10-25T13:55:32+00:00

Add a generic fully device independent DMA buffer implementation that uses
the DMAegnine framework to perform the DMA transfers. This can be used by
converter drivers that whish to provide a DMA buffer for converters that
are connected to a DMA core that implements the DMAengine API.

Apart from allocating the buffer using iio_dmaengine_buffer_alloc() and
freeing it using iio_dmaengine_buffer_free() no additional converter driver
specific code is required when using this DMA buffer implementation.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron