Introduce a simple unipolar 0 to 2.5 range, range_unipolar2_5, for
use by the comedi drivers.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the private ranges, dt9812_10_a{in,out}_range, in this driver
and use the comedi provided range_bipolar10 instead.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the private range, range_das800_ai, in this driver and use
the comedi provided range_bipolar5 instead.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the private range, range_ao_1, in this driver and use the
comedi provided range_bipolar10 instead.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the private range, ao_ranges_60xx, in this driver and use
the comedi provided range_bipolar10 instead.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons. rename the local variable 'thisboard' to 'board'
throughout the driver.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename the CamelCase private data variable chanBipolar to chan_is_bipolar.
Remove the unnecessary comment about it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename the CamelCase function rtdConvertChanGain() as well as the
CamelCase parameters to the function.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename the CamelCase struct rtdBoard to rtd_boardinfo. Also, rename the
range10Start and rangeUniStart variables in the struct to range_bip10
and range_uni10.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename this private data variable to ai_count.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename the CamelCase local variable fifoStatus to fifo_status.

Also rename the goto lables abortTransfer and transferDone to
xfer_abort and xfer_done.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename this private data variable to fifosz.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename this private data variable to xfer_count.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename this private data variable to ao_readback and remove the
unnecessary comments.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename the private data struct to rtd_private.

Also, remove the unnecessary comment about it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg 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: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Cleanup TODO list since support zero-filled pages more efficiently has
already done by this patchset.
Acked-by: NDan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Introduce zero-filled page statistics to monitor the number of
zero-filled pages.
Acked-by: NDan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

After commit 95bdaee2 ("zcache: Move debugfs code out of zcache-main.c file")
be merged, most of knods in zcache debugfs just export zero since these variables
are defined in debug.h but are in use in multiple C files zcache-main.c and debug.c,
in this case variables can't be treated as shared variables.
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch adds support for parsing of the DT display-timings prop
to IPU KMS driver.
Signed-off-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

commit 9c0ad59e ("zcache/debug: Use an array to initialize/use debugfs attributes")
use an array to initialize/use debugfs attributes, .name = #x, .val = &zcache_##x.
For zcache writeback, this commit set .name = zcache_outstanding_writeback_pages and
.name = zcache_writtenback_pages seperately, however, corresponding .val =
&zcache_zcache_outstanding_writeback_pages and .val = &zcache_zcache_writtenback_pages,
which are not correct.
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Before commit 9c0ad59e ("zcache/debug: Use an array to initialize/use
debugfs attributes"), pers_pageframes|_max are exported in debugfs, but
this commit forgot use array export pers_pageframes|_max. This patch add
pers_pageframes|_max back.
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Increment/decrement zcache_[eph|pers]_zpages for zero-filled pages,
the main point of the counters for zpages and pageframes is to be
able to calculate density == zpages/pageframes. A zero-filled page
becomes a zpage that "compresses" to zero bytes and, as a result,
requires zero pageframes for storage. So the zpages counter should
be increased but the pageframes counter should not.

[Dan Magenheimer <dan.magenheimer@oracle.com>: patch description]
Acked-by: NDan Magenheimer <dan.magenheimer@oracle.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Compression of zero-filled pages can unneccessarily cause internal
fragmentation, and thus waste memory. This special case can be
optimized.

This patch captures zero-filled pages, and marks their corresponding
zcache backing page entry as zero-filled. Whenever such zero-filled
page is retrieved, we fill the page frame with zero.
Acked-by: NDan Magenheimer <dan.magenheimer@oracle.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Introduce zero-filled pages handler to capture and handle zero pages.
Acked-by: NDan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: NWanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix below compile warning:
staging/zcache/zcache-main.c: In function ‘zcache_autocreate_pool’:
staging/zcache/zcache-main.c:1393:13: warning: ‘cli’ may be used uninitialized
in this function [-Wuninitialized]
Signed-off-by: NBob Liu <bob.liu@oracle.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Because 'ramster_debugfs_init' is not defined if !CONFIG_DEBUG_FS, there is
compile error:

$ make drivers/staging/zcache/
staging/zcache/ramster/ramster.c: In function ‘ramster_init’:
staging/zcache/ramster/ramster.c:981:2: error: implicit declaration of
function ‘ramster_debugfs_init’ [-Werror=implicit-function-declaration]

This patch fix it and reduce some #ifdef CONFIG_DEBUG_FS in .c files the same
way.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NBob Liu <bob.liu@oracle.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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

Jonathan writes:
	Third round of IIO cleanups, graduations and new stuff for the 3.10 cycle.

	A small set including 3 things.
	1) A short cleanup series for the ak8975.
	2) Graduation of ak8975 out of staging.
	3) Some additional bits for the at91 adc driver to cover low resolution
	   modes, sleep and a little bit of missing documentation.

On the at91_adc a minimal Sample and Hold Time is necessary for the ADC to
guarantee the best converted final value between two channels selection.
This time has to be programmed through the bitfield SHTIM in the
Mode Register ADC_MR.
Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The sleep mode will allow to put the adc in sleep between conversion.
Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

at91 adc offers the choice between two resolutions: low and high.
The low and high resolution values depends on adc IP version, as many IP
properties have been exposed through device tree, these settings have also
been added to the dt bindings.
Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Issues raised in last series to propose this have now been resolved
so there should be no reason this driver cannot graduate from staging.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLaxman Dewangan <ldewangan@nvidia.com>

Now the mysterious NOSTART flag is gone from the read, we can use the
i2c_smbus_read_byte/word/i2c_block_data functions instead of the
local reimplementation of these standard functions.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLaxman Dewangan <ldewangan@nvidia.com>

This flag makes no sense whatsoever where it is.
Documentation/i2c/i2c-protocol states:

  If you set the I2C_M_NOSTART variable for the first partial message,
  we do not generate Addr, but we do generate the startbit S. This will
  probably confuse all other clients on your bus, so don't try this.

This is exactly what is going on here.  Likelihood given that the
driver never checked for this protocol mangling being available is that
it wasn't present on the test boards and hence this flag was simply
ignored.  No indication of why it would be necessary has been found in
the datasheets.
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLaxman Dewangan <ldewangan@nvidia.com>

Signed-off-by: NJonathan Cameron <jic23@kernel.org>
Acked-by: NLaxman Dewangan <ldewangan@nvidia.com>

Patch adds get_trend functionality for OMAP Bandgap thermal devices.
Signed-off-by: NJ Keerthy <j-keerthy@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The patch adds ti_bandgap_get_trend function. This is specific
to OMAP5 for now it computes the trend from the temp values stored
in the hardware history buffer.

Formula: (T1 - T2) / P.

Where:
                T1: Last read valid temperature.
                T2: Last but one read valid temperature.
                P:  Update Interval.
Signed-off-by: NJ Keerthy <j-keerthy@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch enables the HISTORY_BUFFER eature for OMAP5.
Signed-off-by: NJ Keerthy <j-keerthy@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The patch introduces HISTORY_BUFFER feature. This is present in OMAP5 bandgap
and it is a hardware history buffer of previously read temperatures.
Signed-off-by: NJ Keerthy <j-keerthy@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: ti-soc-thermal: Modify update_interval r/w functions to incorporate the OMAP5 feature of COUNTER_DELAY.

Update ti_bandgap_write_update_interval and ti_bandgap_read_update_interval
functions to incorporate the OMAP5 feature of COUNTER_DELAY. The way we
program the delay between two successive temperature conversions
is different for OMAP5 as when compared with OMAP4. Incorporating
the changes required to program the delay for OMAP5.
Signed-off-by: NJ Keerthy <j-keerthy@ti.com>
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>