Merge tag 'iio-for-3.10b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

	Second round of IIO cleanups for the 3.10 cycle

	1) A nice little removal of the unwanted private pointer from
	   struct iio_trigger.
	2) Some clean up of the ad799x driver.
	3) Couple of cleanups for the exynos_adc driver and some documentation.
	4) Move the mxs-lradc initialization a little earlier in the driver to avoid
	   wiping out the configuration just after setting it.

	A nice small set of worthy bits and bobs.

The exynos ADC won't work without a regulator called "vdd" and a clock
called "adc".  Document this fact in the device tree bindings.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

We need to initialize hardware before registering the touchscreen. Else,
we end up setting registers in mxs_lradc_ts_open(), getting called just
after registering the touchscreen with input_register_device() and by
the end of mxs_lradc_probe(), we reset the LRADC block hence losing the
correct configuration.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Fabio Estevam <fabio.estevam@freescale.com>

Fixes some typos in the documentation of exynos-adc.txt.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

exynos_adc is a DT only driver and exynos_adc_match table is always
compiled in. Hence remove the macro.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Avoid allocating and freeing the sample buffer for each transfer. Instead
allocate it once when we start sampling. Also pre-compute the number of bytes we
need to transfer in the same way.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

The driver has support for reporting a channels scale, but none of the channels
set the IIO_CHAN_INFO_SCALE mask. Add the IIO_CHAN_INFO_SCALE to all channels to
indicate that the drivers supports reporting the scale.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

The ad779x channels all follow the same pattern. Add a helper macro to
initialize the channel spec, this allows us to drop quite a few lines.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Use i2c_smbus_{read,write}_word_data_swapped instead of open-coding it.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

None of the devices supported by this driver have an internal voltage reference,
so remove support for it from the driver.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Remove fields from the ad799x_state struct which are not used.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This patch fixes the following sparse warnings about use of
obsolete array initializer:

drivers/staging/comedi/drivers/amplc_dio200_pci.c:256:24: warning:
	obsolete array initializer, use C99 syntax
drivers/staging/comedi/drivers/amplc_dio200_pci.c:269:24: warning:
	obsolete array initializer, use C99 syntax
drivers/staging/comedi/drivers/amplc_dio200_pci.c:281:25: warning:
	obsolete array initializer, use C99 syntax
drivers/staging/comedi/drivers/amplc_dio200_pci.c:298:25: warning:
	obsolete array initializer, use C99 syntax
drivers/staging/comedi/drivers/amplc_dio200_pci.c:315:25: warning:
	obsolete array initializer, use C99 syntax
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This variable in the private data is not used. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This variable in the private data is not necessary. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This variable in the private data is not necessary. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This variable in the private data is not necessary. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This variable in the private data is not necessary. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Move the #define's in the private rtd520.h header into the source
file and delete the header.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Cleanup the multi-line comments at the beginning of the file
so they follow the CodingStyle.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add a local variable to make this function a bit cleaner and
remove the unnecessary comments.

The comedi core expects this function to return the number of
data parameters used. Change the return from '1' to 'insn->n'
to make this more apparent.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add some local variables to make this function a bit cleaner and
remove the unnecessary comments.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Use pci_ioremap_bar() to ioremap the PCI bars used by this driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Use the register map defines for the PLX9080 found in plx9080.h
instead of the custom named defines in rtd520.h.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This commented out code in s626_ai_insn_read() is just left over
development test code. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Only hook up the analog input command support if the interrupt is
available.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This subdevice function is not implemented in the driver. Just
remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, add some whitespace to the subdevice init.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Convert the comedi_subdevice access from pointer match to array
access.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add some local variables to make this function a bit clearer and
remove the unnecessary comments.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add some local variables to make this function a bit cleaner.

The comedi core expects this function to return the number of
data parameters used. Change the return from '1' to insn->n to
make this more aparent.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

There are a number of uint16_t casts used in the #define's of the
constant bit field values as well as the calls to DEBIreplace().
These cause a number of sparse warnings of the type:

warning: cast truncates bits from constant value (ffff1cff becomes 1cff)

Remove all of the casts and change the types of the parameters to
DEBIreplace from uin16_t to unsigned int. This fixes all the warnings.

Mask the addr that is or'ed with DEBI_CMD_RDWORD then written to the
P_DEBICMD register as well as the val written to the P_DEBIAD register
with 0xffff. The addr and val are only 16-bits but the registers are
32-bits.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The base_address variable in the private data is the ioremap'ed
PCI bar 0 resource.

For aesthetic reasons, and to shorten some of the lines, rename
this variable to 'mmio'.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This macro relies on a local variable having a specific name its
also just a wrapper around a readl() call. Remove the macro and
just call readl() directly.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The WR7146 macro relies on a local variable having a specific name.
This macro is a wrapper around a writel() call. Remove the macro and
just call writel() directly.

The SETVEC macro uses the WR7146 macro so remove it as well and just
do the writel() directly.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This macro relies on a local variable having a specific name. Replace
it with a new helper function, s626_mc_test().
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Since we are programming SR register 18, better name structs/arrays
accordingly to avoid confusion.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Since we only access the third row, we can delete the others.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

SR1B register value is always 3 regardless of video card or RAM type.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused struct field.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Delete unused XGI330_LCDCapStruct fields.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>