linux-stable.git/drivers/iio, branch v4.0.7

iio: adis16400: Fix burst transfer for adis16448

2015-06-23T00:03:25+00:00

commit d046ba268adb87c7780494ecf897cbafbf100d57 upstream.

The adis16448, unlike the other chips in this family, in addition to the
hardware channels also sends out the DIAG_STAT register in burst mode
before them. Handle that case by skipping over the first 2 bytes before we
pass the received data to the buffer.

Signed-off-by: Lars-Peter Clausen 
Fixes: 76ada52f7f5d ("iio:adis16400: Add support for the adis16448")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adis16400: Fix burst mode

2015-06-23T00:03:25+00:00

commit 9df560350c90f3d3909fe653399b3584c9a17b61 upstream.

There are a few issues with the burst mode support. For one we don't setup
the rx buffer, so the buffer will never be filled and all samples will read
as the zero. Furthermore the tx buffer has the wrong type, which means the
driver sends the wrong command and not the right data is returned.

The final issue is that in burst mode all channels are transferred. Hence
the length of the transfer length should be the number of hardware
channels * 2 bytes. Currently the driver uses indio_dev->scan_bytes for
this. But if the timestamp channel is enabled the scan_bytes will be larger
than the burst length. Fix this by just calculating the burst length based
on the number of hardware channels.

Signed-off-by: Paul Cercueil 
Signed-off-by: Lars-Peter Clausen 
Fixes: 5eda3550a3cc ("staging:iio:adis16400: Preallocate transfer message")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adis16400: Compute the scan mask from channel indices

2015-06-23T00:03:25+00:00

commit c2a8b623a089d52c199e305e7905829907db8ec8 upstream.

We unfortunately can't use ~0UL for the scan mask to indicate that the
only valid scan mask is all channels selected. The IIO core needs the exact
mask to work correctly and not a super-set of it. So calculate the masked
based on the channels that are available for a particular device.

Signed-off-by: Paul Cercueil 
Signed-off-by: Lars-Peter Clausen 
Fixes: 5eda3550a3cc ("staging:iio:adis16400: Preallocate transfer message")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adis16400: Use != channel indices for the two voltage channels

2015-06-23T00:03:25+00:00

commit 7323d59862802ca109451eeda9777024a7625509 upstream.

Previously, the two voltage channels had the same ID, which didn't cause
conflicts in sysfs only because one channel is named and the other isn't;
this is still violating the spec though, two indexed channels should never
have the same index.

Signed-off-by: Paul Cercueil 
Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adis16400: Report pressure channel scale

2015-06-23T00:03:24+00:00

commit 69ca2d771e4e709c5ae1125858e1246e77ef8b86 upstream.

Add the scale for the pressure channel, which is currently missing.

Signed-off-by: Lars-Peter Clausen 
Fixes: 76ada52f7f5d ("iio:adis16400: Add support for the adis16448")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adc: twl6030-gpadc: Fix modalias

2015-06-23T00:03:24+00:00

commit e5d732186270e0881f47d95610316c0614b21c3e upstream.

Remove extra space between platform prefix and DRIVER_NAME in MODULE_ALIAS.

Signed-off-by: Axel Lin 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adc: xilinx: Fix VREFN sign

2015-06-06T15:20:55+00:00

commit 97ffae1d30c3f6ceee67d5b0d3e540c08c13c744 upstream.

The VREFN channel is bipolar, not unipolar. Small negative values do
occur (e.g., -1mV), and unsigned conversion maps them incorrectly to
large positive values (about +1V), so fix this.

Signed-off-by: Thomas Betker 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adc: xilinx: Fix VREFP scale

2015-06-06T15:20:55+00:00

commit 00db4e52f4541965f7fda225eb458a75f892017b upstream.

The scaling factor for VREFP is 3.0/4096, not 1.0/4096; fix this to get
correct readings.

Signed-off-by: Thomas Betker 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adc: xilinx: Fix "vccaux" channel .address

2015-06-06T15:20:54+00:00

commit d6c96c42283601e311a7a1a3d7e51cde9d7fdb6e upstream.

For the "vccaux" channel, read the VCCAUX register, not VCCINT.

Signed-off-by: Thomas Betker 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adc: xilinx: Fix register addresses

2015-06-06T15:20:54+00:00

commit 3960d2c0c4aafe98da47a4a2eb64dfa8e88d8df5 upstream.

Define the register addresses for MIN_VCCPINT, MIN_VCCPAUX, MIN_VCCO_DDR
correctly.

Signed-off-by: Thomas Betker 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman