linux-toradex.git/drivers/iio, branch v3.18.20

iio: adc: at91_adc: allow to use full range of startup time

2015-08-04T18:16:40+00:00

[ Upstream commit 815983e9afcb21552e1b9d77e3755d394cbf5249 ]

The DT-Property "atmel,adc-startup-time" is stored in an u8 for a microsecond
value. When trying to increase the value of STARTUP in Register AT91_ADC_MR
some higher values can't be reached.

Change the type in function parameter and private structure field from u8 to
u32.

Signed-off-by: Jan Leupold 
[nicolas.ferre@atmel.com: change commit message, increase u16 to u32 for startup time]
Signed-off-by: Nicolas Ferre 
Acked-by: Alexandre Belloni 
Cc: 
Signed-off-by: Jonathan Cameron 

Signed-off-by: Sasha Levin

iio: tmp006: Check channel info on write

2015-08-04T18:16:31+00:00

[ Upstream commit f451957dafe712ab2cd4b7ca8ba9197798115fbe ]

only SAMP_FREQ is writable

Will lead to SAMP_FREQ being written by any attempt to write
to the other exported attributes and hence a rather unexpected
result!

Signed-off-by: Peter Meerwald 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

iio: DAC: ad5624r_spi: fix bit shift of output data value

2015-08-04T18:16:19+00:00

[ Upstream commit 09f4dcc9443c4731b6669066bd1bc4312ef17bcc ]

The value sent on the SPI bus is shifted by an erroneous number of bits.
The shift value was already computed in the iio_chan_spec structure and
hence subtracting this argument to 16 yields an erroneous data position
in the SPI stream.

Signed-off-by: JM Friedt 
Acked-by: Lars-Peter Clausen 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

iio: adis16400: Compute the scan mask from channel indices

2015-07-03T16:34:33+00:00

[ Upstream commit c2a8b623a089d52c199e305e7905829907db8ec8 ]

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")
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

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

2015-07-03T16:34:33+00:00

[ Upstream commit 7323d59862802ca109451eeda9777024a7625509 ]

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 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

iio: adis16400: Report pressure channel scale

2015-07-03T16:34:32+00:00

[ Upstream commit 69ca2d771e4e709c5ae1125858e1246e77ef8b86 ]

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")
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

iio: adc: xilinx: Fix VREFN sign

2015-06-09T18:31:41+00:00

[ Upstream commit 97ffae1d30c3f6ceee67d5b0d3e540c08c13c744 ]

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 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

iio: adc: xilinx: Fix VREFP scale

2015-06-09T18:31:41+00:00

[ Upstream commit 00db4e52f4541965f7fda225eb458a75f892017b ]

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

Signed-off-by: Thomas Betker 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

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

2015-06-09T18:31:40+00:00

[ Upstream commit d6c96c42283601e311a7a1a3d7e51cde9d7fdb6e ]

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

Signed-off-by: Thomas Betker 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

iio: adc: xilinx: Fix register addresses

2015-06-09T18:31:39+00:00

[ Upstream commit 3960d2c0c4aafe98da47a4a2eb64dfa8e88d8df5 ]

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

Signed-off-by: Thomas Betker 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin