Commit Graph

930 Commits

Author SHA1 Message Date
Srinivas Pandruvada
124e1b1d09 iio: accel: kxcjk-1013: support runtime pm
In an effort to improve raw read performance and at the same time enter
low power state at every possible chance.
For raw reads, it will keep the system powered on for a default or user
specified time, via autosuspend_delay attribute of device power.
This will help read multiple samples without power on/off sequence.
For triggers it will keep the system on till, requested to be turned
off by trigger state by utilizing run time PM usage counters.

When runtime pm is not enabled, then it keeps the chip in operation
mode always.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-07 11:22:42 +01:00
Julia Lawall
889c558095 iio: fix error return code
Convert a zero return value on error to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-07 10:26:53 +01:00
Linus Torvalds
53ee983378 Staging driver patches for 3.17-rc1
Here's the big pull request for the staging driver tree for 3.17-rc1.
 
 Lots of things in here, over 2000 patches, but the best part is this:
  1480 files changed, 39070 insertions(+), 254659 deletions(-)
 
 Thanks to the great work of Kristina Martšenko, 14 different staging
 drivers have been removed from the tree as they were obsolete and no one
 was willing to work on cleaning them up.  Other than the driver
 removals, loads of cleanups are in here (comedi, lustre, etc.) as well
 as the usual IIO driver updates and additions.
 
 All of this has been in the linux-next tree for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here's the big pull request for the staging driver tree for 3.17-rc1.

  Lots of things in here, over 2000 patches, but the best part is this:
   1480 files changed, 39070 insertions(+), 254659 deletions(-)

  Thanks to the great work of Kristina Martšenko, 14 different staging
  drivers have been removed from the tree as they were obsolete and no
  one was willing to work on cleaning them up.  Other than the driver
  removals, loads of cleanups are in here (comedi, lustre, etc.) as well
  as the usual IIO driver updates and additions.

  All of this has been in the linux-next tree for a while"

* tag 'staging-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (2199 commits)
  staging: comedi: addi_apci_1564: remove diagnostic interrupt support code
  staging: comedi: addi_apci_1564: add subdevice to check diagnostic status
  staging: wlan-ng: coding style problem fix
  staging: wlan-ng: fixing coding style problems
  staging: comedi: ii_pci20kc: request and ioremap memory
  staging: lustre: bitwise vs logical typo
  staging: dgnc: Remove unneeded dgnc_trace.c and dgnc_trace.h
  staging: dgnc: rephrase comment
  staging: comedi: ni_tio: remove some dead code
  staging: rtl8723au: Fix static symbol sparse warning
  staging: rtl8723au: usb_dvobj_init(): Remove unused variable 'pdev_desc'
  staging: rtl8723au: Do not duplicate kernel provided USB macros
  staging: rtl8723au: Remove never set struct pwrctrl_priv.bHWPowerdown
  staging: rtl8723au: Remove two never set variables
  staging: rtl8723au: RSSI_test is never set
  staging:r8190: coding style: Fixed checkpatch reported Error
  staging:r8180: coding style: Fixed too long lines
  staging:r8180: coding style: Fixed commenting style
  staging: lustre: ptlrpc: lproc_ptlrpc.c - fix dereferenceing user space buffer
  staging: lustre: ldlm: ldlm_resource.c - fix dereferenceing user space buffer
  ...
2014-08-04 18:36:12 -07:00
Lars-Peter Clausen
cbe88bcc8e iio: buffer: Coalesce adjacent demux table entries
When copying multiple multiple samples that are adjacent in both the source as
well as the destination buffer, instead of creating a new demux table entry for
each sample just increase the length of the previous entry by the size of the
new sample. This makes the demuxing process slightly more efficient.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-01 18:26:29 +01:00
Lars-Peter Clausen
61072dbc8a iio: buffer: Use roundup() instead of open-coding it
Makes the code slightly shorter and a bit easier to understand.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-27 19:13:08 +01:00
Philippe Reynes
4729889727 iio: add support of the max5821
Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-27 14:21:35 +01:00
Reyad Attiyat
03d795589d iio: hid-sensor-magn-3d: Fix build warning
Fix build warning, sizeof() called on dynamically
sized pointer, by removing the call and the dependent
function parameter. It is not needed or used in this
driver, when pushing values to an iio buffer.

Changes from v1
- Fix mistake in varible name

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-27 14:16:29 +01:00
Greg Kroah-Hartman
040bf7d63d Fourth round of IIO new drivers, functionality and cleanups for the 3.17 cycle
New functionality
 * A new modifier to indicate that a rotation is relative to either
   true or magnetic north.  This is to be used by some magnetometers
   that provide data in this way.
 * hid magnetometer now supports output rotations from various variants on
   North
 * HMC5843 driver converted to regmap and reworked to allow easy support
   of other similar devices.  Support for HMC5983 added via both i2c and SPI.
 * Rework of Exynos driver to simplify extension to support more devices.
 * Addition of support for the Exynos3250 ADC (which requires an additional
   clock)  Support for quite a few more devices on its way.
 
 Cleanups
 * ad7997 - a number of cleanups and tweaks to how the events are controlled
   to make it more intuitive.
 * kxcjk - cleanups and minor fixes for this new driver.
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Merge tag 'iio-for-3.17d' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Fourth round of IIO new drivers, functionality and cleanups for the 3.17 cycle

New functionality
* A new modifier to indicate that a rotation is relative to either
  true or magnetic north.  This is to be used by some magnetometers
  that provide data in this way.
* hid magnetometer now supports output rotations from various variants on
  North
* HMC5843 driver converted to regmap and reworked to allow easy support
  of other similar devices.  Support for HMC5983 added via both i2c and SPI.
* Rework of Exynos driver to simplify extension to support more devices.
* Addition of support for the Exynos3250 ADC (which requires an additional
  clock)  Support for quite a few more devices on its way.

Cleanups
* ad7997 - a number of cleanups and tweaks to how the events are controlled
  to make it more intuitive.
* kxcjk - cleanups and minor fixes for this new driver.
2014-07-24 14:57:19 -07:00
Chanwoo Choi
adb4e3f4cf iio: adc: exynos_adc: Control special clock of ADC to support Exynos3250 ADC
This patch control special clock for ADC in Exynos series's FSYS block.
If special clock of ADC is registerd on clock list of common clk framework,
Exynos ADC drvier have to control this clock.

Exynos3250/Exynos4/Exynos5 has 'adc' clock as following:
- 'adc' clock: bus clock for ADC

Exynos3250 has additional 'sclk_adc' clock as following:
- 'sclk_adc' clock: special clock for ADC which provide clock to internal ADC

Exynos 4210/4212/4412 and Exynos5250/5420 has not included 'sclk_adc' clock
in FSYS_BLK. But, Exynos3250 based on Cortex-A7 has only included 'sclk_adc'
clock in FSYS_BLK.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-23 21:58:26 +01:00
Chanwoo Choi
e49d99e0ec iio: adc: exynos_adc: Add exynos_adc_data structure to improve readability
This patchset add 'exynos_adc_data' structure which includes some functions
to control ADC operation and specific data according to ADC version (v1 or v2).

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-23 21:55:47 +01:00
Peter Meerwald
f4e2f94d8c iio:kxcjk-1013: Fix endianness in scan_type
driver uses i2c_smbus_read_word_data() to the data in the trigger handler and hence
already does endianness conversion; the I2C chip has data in little endian, but the
value is provides in CPU endianness

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 17:52:15 +01:00
Peter Meerwald
9b2a4d35a6 iio:bma180: Missing check for frequency fractional part
val2 should be zero

This will make no difference for correct inputs but will reject
incorrect ones with a decimal part in the value written to the sysfs
interface.

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-07-20 17:39:47 +01:00
Peter Meerwald
381676d5e8 iio:bma180: Fix scale factors to report correct acceleration units
The userspace interface for acceleration sensors is documented as using
m/s^2 units [Documentation/ABI/testing/sysfs-bus-iio]

The fullscale raw values for the BMA80 corresponds to -/+ 1, 1.5, 2, etc G
depending on the selected mode.

The scale table was converting to G rather than m/s^2.
Change the scaling table to match the documented interface.

See commit 71702e6e, iio: mma8452: Use correct acceleration units,
for a related fix.

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-07-20 17:38:39 +01:00
Srinivas Pandruvada
c1288b8338 iio: accel: kxcjk-1013: Increment ref counter for indio_dev->trig
Assigning indio_dev->trig is not a good idea, as this can result in
wrong reference count for trigger device. If assigned, it is better to
increment reference counter by calling iio_trigger_get.
Refer to http://www.spinics.net/lists/linux-iio/msg13669.html for discussion
with Jonathan.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 16:37:52 +01:00
Srinivas Pandruvada
59bfeaba3b iio: accel: kxcjk-1013: Use try_reenable to ack intr
This chip needs explicit interrupt ack, introducing try_reenable
callback. Also removed separate function to ack interrupt as this
doesn't add any value.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 16:24:22 +01:00
Srinivas Pandruvada
f0ca974920 iio: accel: kxcjk-1013: Fix setting frequency
Fix issue with setting of 12.5 and 6.25 HZ. The match of val2 fails.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 16:18:58 +01:00
Lars-Peter Clausen
61bd55ce16 iio: buffer: Fix demux table creation
When creating the demux table we need to iterate over the selected scan mask for
the buffer to get the samples which should be copied to destination buffer.
Right now the code uses the mask which contains all active channels, which means
the demux table contains entries which causes it to copy all the samples from
source to destination buffer one by one without doing any demuxing.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-07-20 15:44:39 +01:00
Reyad Attiyat
abea9c62c3 iio: hid-sensor-magn-3d: Add support for rotation from north
Add the HID usage attribute ID's and IIO channel info for rotation
from north support.

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 13:39:35 +01:00
Reyad Attiyat
2a96540a5c iio: hid-sensor-magn-3d: Scan for usage attributes before setting up iio channels
Scan for and count the HID usage attributes supported by the driver.
This allows for the driver to only setup the IIO channels for the
sensor usages present in the HID USB reports.

Changes from v5
-Fixed kernel panic from invalid pointer dereference
-Fixed variable assignment style

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 13:37:52 +01:00
Reyad Attiyat
11b8ddab81 iio: types: Added support for rotation from north usage attributes
Added the rotation from north usage attributes to the iio modifier enum and to the iio modifier names array.

Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-20 13:34:45 +01:00
Greg Kroah-Hartman
589e1d10ff Merge 3.16-rc5 into staging-next
We want the fixes in -rc5 in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-13 15:35:56 -07:00
Peter Meerwald
3008d082f2 iio:adc:ad799x: Allow writing of event config
Allows explicity enabling of events

Previously, events were always reported as enabled, but actually only
implicitly enabled when updating the buffer scan mode

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:59:40 +01:00
Peter Meerwald
1d15330a39 iio:adc:ad799x: Return more meaningful event enabled state
only report an event as enabled if it actually is enabled

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:58:59 +01:00
Peter Meerwald
8235841b95 iio:adc:ad799x: Set conversion channels and rename ad7997_8_update_scan_mode()
rename since function is used by all chips with ALERT pin, not just ad7997/8

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:57:56 +01:00
Peter Meerwald
0f7ddcc1bf iio:adc:ad799x: Write default config on probe and reset alert status on probe
writing ALERT_EN and BUSY_ALERT to the chip config register clears
pending alerts, BUSY_ALERT is cleared when reading back the register

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:57:35 +01:00
Peter Meerwald
89ca79afe5 iio:adc:ad799x: Add helper function to read/write config register
16-bit on ad7997/ad7998, 8-bit elsewhere

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:57:09 +01:00
Peter Meerwald
ef0bf6f82d iio:adc:ad799x: Make chan_spec const in ad799x_chip_config struct
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:56:49 +01:00
Peter Meerwald
91556c6939 iio:adc:ad799x: Only expose event interface when IRQ is available
an IRQ is necessary to handle the ALERT condition; without
IRQ, the IIO event interface serves no purpose

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:56:14 +01:00
Peter Meerwald
e1c6e2a217 iio:adc:ad799x: Use BIT() and GENMASK()
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:55:42 +01:00
Peter Meerwald
bd3bd4328a iio:adc:ad799x: Save some lines in ad7997_8_update_scan_mode() exit handling
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:48:43 +01:00
Peter Meerwald
541544712e iio:adc:ad799x: Drop I2C access helper functions
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 21:46:54 +01:00
Greg Kroah-Hartman
db7c17ecbf 3rd round of IIO new drivers, cleanups and functionality for the 3.17 cycle.
New drivers
 * isl29125 digital color light sensor driver
 * TAOS/AMS tcs3414 digital color sensor
 
 Staging graduation
 * ad7291 ADC driver.
 
 New functionality
 * st_sensors - device tree support and bindings
 * mma8452 - device tree support
 
 Cleanups
 * Drop redundant variables in a number of drivers.
 * Reorder a structure definition to ealy wiht a warning about static
   not being at the beginning in the hid-sensors driver.
 * Switch a few more drivers away from using explicit sampling_frequency
   attribute to providing this through the core.
 * Make hid_sensor_get_reporting_interval static as only used within a single
   file.
 * Drop a redundant check for negative values in an unsigned variable from
   ad9832
 * Drop some duplicate case labels in the event monitor example code.
 * Use devm_ioremap_resource to simplify error handling.
 * Use devm_kzalloc within the blackfin timer driver to simplify error
   handling and removal.
 * A number of cleanups of the ad7291 from Hartmut Knaack in response
   to a patch moving it out of staging.
 * Core support for the period info element about events.  It has been
   in the abi for a while, but not added until now to the newer handling
   of information related to events.
 * Add HAS_IOMEM dependency to mxs_lradc to avoid build issues when testing
   enabled.
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Merge tag 'iio-for-3.17c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

3rd round of IIO new drivers, cleanups and functionality for the 3.17 cycle.

New drivers
* isl29125 digital color light sensor driver
* TAOS/AMS tcs3414 digital color sensor

Staging graduation
* ad7291 ADC driver.

New functionality
* st_sensors - device tree support and bindings
* mma8452 - device tree support

Cleanups
* Drop redundant variables in a number of drivers.
* Reorder a structure definition to ealy wiht a warning about static
  not being at the beginning in the hid-sensors driver.
* Switch a few more drivers away from using explicit sampling_frequency
  attribute to providing this through the core.
* Make hid_sensor_get_reporting_interval static as only used within a single
  file.
* Drop a redundant check for negative values in an unsigned variable from
  ad9832
* Drop some duplicate case labels in the event monitor example code.
* Use devm_ioremap_resource to simplify error handling.
* Use devm_kzalloc within the blackfin timer driver to simplify error
  handling and removal.
* A number of cleanups of the ad7291 from Hartmut Knaack in response
  to a patch moving it out of staging.
* Core support for the period info element about events.  It has been
  in the abi for a while, but not added until now to the newer handling
  of information related to events.
* Add HAS_IOMEM dependency to mxs_lradc to avoid build issues when testing
  enabled.
2014-07-13 12:31:47 -07:00
Martin Fuzzey
a3fb96a8c0 iio: mma8452: add DT support
Allow the mma8452 to be described in the device tree.

Since no device specific binding attributes exist the trivial
I2C binding is sufficient to describe the compatible string.

Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-13 10:14:44 +01:00
Martin Fuzzey
71702e6e52 iio: mma8452: Use correct acceleration units.
The userspace interface for acceleration sensors is documented as using
m/s^2 units [Documentation/ABI/testing/sysfs-bus-iio]

The fullscale raw value for the mma8452 (-2048) corresponds to -2G, -4G or -8G
depending on the seleted mode.

The scale table was converting to G rather than m/s^2.
Change the scaling table to match the documented interface.

Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: stable@vger.kernel.org
2014-07-12 13:18:55 +01:00
Srinivas Pandruvada
77a533c73f iio: core : events ABI for specifying period
The iio sysfs ABI defines a way to specify period for roc and thresholds.
What:		/sys/.../events/in_accel_x_thresh_rising_period
What:		/sys/.../events/in_accel_x_thresh_falling_period
what:		/sys/.../events/in_accel_x_roc_rising_period
What:		/sys/.../events/in_accel_x_roc_falling_period

But there is no way to add period with the current event info enum.

Added IIO_EV_INFO_PERIOD and corresponding string.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-11 21:20:59 +01:00
Srinivas Pandruvada
78b3321610 iio:core: Handle error when mask type is not separate
When event spec is shared by multiple channels, which has definition
for mask_shared_by_type, iio_device_register_eventset fails.

For example:
static const struct iio_event_spec iio_dummy_events[] = {
	{
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_RISING,
		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
	}, {
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_FALLING,
		.mask_separate = BIT(IIO_EV_INFO_ENABLE),a
		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
	}
};

If two channels use this event spec, this will result in error.

This change handles EBUSY error similar to iio_device_add_info_mask_type().

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-07-11 21:17:56 +01:00
Linus Walleij
2d7768a872 iio: st_sensors: add devicetree probing support
The I2C devices that make up the STMicroelectronics MEMS sensors
may be sneakily enabled by cleverly giving the device node the same
name as a string match from the platform device ID table. However
the right method is to use the compatible string.

On detection, the ST sensors use the ID string to probe and
instatiate the right sensor driver, so pass the kernel-internal ID
string in the .data field of the OF match table, and set the I2C
client name to this name when a compatible match is used.

This avoids having misc Linux-specific strings floating around in
the device tree.

Cc: Lee Jones <lee.jones@linaro.org>
Cc: Denis CIOCCA <denis.ciocca@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-11 21:09:49 +01:00
Jan Kardell
baa3c65298 iio: ti_am335x_adc: Fix: Use same step id at FIFOs both ends
Since AI lines could be selected at will (linux-3.11) the sending
and receiving ends of the FIFO does not agree about what step is used
for a line. It only works if the last lines are used, like 5,6,7,
and fails if ie 2,4,6 is selected in DT.

Signed-off-by: Jan Kardell <jan.kardell@telliq.com>
Tested-by: Zubair Lutfullah <zubair.lutfullah@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: stable@vger.kernel.org
2014-07-08 21:21:22 +01:00
Lars-Peter Clausen
3b1cae7c2c staging:iio:ad7291: Move out of staging
The ad7291 driver is in a reasonable shape. It does not use non-standard API/ABI
and there are no major style issues with the driver. So this patch moves it out
of staging.

There is one small warning from checkpatch which is also fixed in this patch.
The patch also sorts the #include directives in alphabetical order.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-08 21:17:30 +01:00
Greg Kroah-Hartman
c1a567d31b Merge 3.16-rc4 into staging-next
We want the staging tree fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-07 17:59:07 -07:00
Daniel Baluta
fb123a6b6b iio: hid-sensors: make hid_sensor_get_reporting_interval static
This fixes the following sparse warning:

  CHECK   drivers/iio/common/hid-sensors/hid-sensor-attributes.c
drivers/iio/common/hid-sensors/hid-sensor-attributes.c:346:5: warning:
symbol 'hid_sensor_get_reporting_interval' was not declared. Should it be static?

Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-07 13:29:49 +01:00
Linus Walleij
3ce85cc4fb iio: st_sensors: get platform data from device tree
Currently the STMicroelectronics sensors only support one single
platform data item: configuration of the DRDY (data ready) pin
for a particular design. Augment the core to prioritize and take
this information from the device tree if the parent device has an
assigned device node, else fall back to passed in platform data
(usually the default data).

Cc: Lee Jones <lee.jones@linaro.org>
Cc: Denis CIOCCA <denis.ciocca@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-07 13:11:28 +01:00
Jonathan Cameron
e4f9593901 iio: imu: adis16480 switch sampling frequency attr to core support
By using the info_mask_shared_by_all element of the channel spec, access
to the sampling frequency becomes available to in kernel users of the
driver.  It also shortens and simplifies the code.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
2014-07-07 10:00:59 +01:00
Jonathan Cameron
a07a97d049 iio: imu: adis16400 switch sampling frequency attr to core support.
By using the info_mask_shared_by_all element of the channel spec, access
to the sampling frequency becomes available to in kernel users of the
driver.  It also shortens and simplifies the code.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
2014-07-07 09:49:43 +01:00
Jonathan Cameron
82695ef549 iio: adis: Switch sampling frequency attr to core support.
By using the info_mask_shared_by_all element of the channel spec, acce
to the sampling frequency becomes available to in kernel users of the
driver.  It also shortens and simplifies the code.

This particular conversion was made more complicated by the shared library
and the fact that a number of the drivers do not actually have support for
setting or reading the sampling frequency.  The hardware, in those cases
investigated supports it. It's just never been implemented.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
2014-07-07 09:44:17 +01:00
Jonathan Cameron
95bb8918f9 iio: gyro: itg3200 switch sampling frequency attr to core support.
By using the info_mask_shared_by_all element of the channel spec, access
to the sampling frequency becomes available to in kernel users of the
driver.  It also shortens and simplifies the code a little.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Cc: Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
Cc: Thorsten Nowak <thorsten.nowak@iis.fraunhofer.de>
Cc: Christian Strobel <christian.strobel@iis.fraunhofer.de>
2014-07-07 09:41:32 +01:00
Jonathan Cameron
2d239c9e92 iio:st sensors: remove custom sampling frequence attribute in favour of core support.
This allows in kernel client drivers to access this

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Denis Ciocca <denis.ciocca@st.com>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
2014-07-07 09:39:57 +01:00
Peter Meerwald
a244e7b57f iio: Add driver for AMS/TAOS tcs3414 digital color sensor
16-bit digital color sensor with red, green, blue and clear channel

datasheet: http://ams.com/eng/content/download/250258/975997/TCS3414_Datasheet_EN_v1.pdf

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-07 09:34:36 +01:00
Peter Meerwald
6c25539cbc iio: Add Intersil isl29125 digital color light sensor driver
datasheet: http://www.intersil.com/content/dam/Intersil/documents/isl2/isl29125.pdf

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-07 09:06:50 +01:00
Peter Meerwald
2a58b4f88e iio:tcs3472: Check for buffer enabled and locking
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-07 08:59:16 +01:00
Sachin Kamat
a034234277 iio: hid-sensors: Fix compilation warning
Move the 'static' keyword to beginning of definition to silence the
following compilation warning:
drivers/iio/common/hid-sensors/hid-sensor-attributes.c:34:1: warning: ‘static’ is not at beginning of declaration [-Wold-style-declaration]

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:21:09 +01:00
Sachin Kamat
4ff9f633c3 iio: hid-sensor-prox: Fix return values
IIO_CHAN_INFO_SAMP_FREQ and IIO_CHAN_INFO_HYSTERESIS cases ignored
the actual return values (which could be -EINVAL) and instead
returned IIO_VAL_INT_PLUS_MICRO always. Return the actual value
obtained from the functions. Both functions return IIO_VAL_INT_PLUS_MICRO
upon success.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:09:46 +01:00
Sachin Kamat
27793803f2 iio: hid-sensor-gyro-3d: Fix return values
IIO_CHAN_INFO_SAMP_FREQ and IIO_CHAN_INFO_HYSTERESIS cases ignored
the actual return values (which could be -EINVAL) and instead
returned IIO_VAL_INT_PLUS_MICRO always. Return the actual value
obtained from the functions. Both functions return IIO_VAL_INT_PLUS_MICRO
upon success.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:07:58 +01:00
Sachin Kamat
5d24b0b37b iio: hid-sensor-als: Fix return values
IIO_CHAN_INFO_SAMP_FREQ and IIO_CHAN_INFO_HYSTERESIS cases ignored
the actual return values (which could be -EINVAL) and instead
returned IIO_VAL_INT_PLUS_MICRO always. Return the actual value
obtained from the functions. Both functions return IIO_VAL_INT_PLUS_MICRO
upon success.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:07:38 +01:00
Sachin Kamat
5f25b41f7e iio: hid-sensor-magn-3d: Fix return values
IIO_CHAN_INFO_SAMP_FREQ and IIO_CHAN_INFO_HYSTERESIS cases ignored
the actual return values (which could be -EINVAL) and instead
returned IIO_VAL_INT_PLUS_MICRO always. Return the actual value
obtained from the functions. Both functions return IIO_VAL_INT_PLUS_MICRO
upon success.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:07:12 +01:00
Sachin Kamat
2f084c1756 iio: hid-sensor-accel-3d: Fix return values
IIO_CHAN_INFO_SAMP_FREQ and IIO_CHAN_INFO_HYSTERESIS cases ignored
the actual return values (which could be -EINVAL) and instead
returned IIO_VAL_INT_PLUS_MICRO always. Return the actual value
obtained from the functions. Both functions return IIO_VAL_INT_PLUS_MICRO
upon success.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:04:48 +01:00
Sachin Kamat
6c3d8d4f05 iio: hid-sensor-press: Fix return values
IIO_CHAN_INFO_SAMP_FREQ and IIO_CHAN_INFO_HYSTERESIS cases ignored
the actual return values (which could be -EINVAL) and instead
returned IIO_VAL_INT_PLUS_MICRO always. Return the actual value
obtained from the functions. Both functions return IIO_VAL_INT_PLUS_MICRO
upon success.

Agreed with by Srinivas.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-05 11:01:32 +01:00
Sachin Kamat
fc96d25ad0 iio: xilinx-xadc: Remove unused variable
'offset’ is not used in the function. Remove it.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-03 22:00:40 +01:00
Sachin Kamat
10215d8689 iio: ad5686: Remove redundant variable
‘regdone’ is not used in the function. Remove it.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-03 21:59:56 +01:00
Sachin Kamat
0d3a9b2dad iio: ad5504: Remove redundant variable
By re-arranging the code, 'ret' can be removed from this
function.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-03 21:58:26 +01:00
Sachin Kamat
15255c6b4d iio: ad5624r_spi: Remove redundant variable
By re-arranging the code, 'ret' can be removed from this
function.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-03 21:56:35 +01:00
Sachin Kamat
a9fbbbd7d2 iio: adis16400: Remove unused variable
'rx' is not used in this function. Remove it.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-07-03 21:47:01 +01:00
Greg Kroah-Hartman
3dc50c1af3 Second round of new drivers and cleanups for IIO in the 3.17 cycle.
New drivers
 * mcp4902, mcp4912 and mcp4922 SPI DAC driver.
 * max1027, max1029 and max1031 SPI ADC driver.
 
 Cleanups
 * cm32181 - use devm APIs to simplify error paths.
 * ak8975 - use devm APIs to simplify error paths.
 * ad9850 - drop some unused defines and an unnecessary goto.
 * hmc5843 - add missing devices to the device id table and the documentation.
 * ad9832 - small formatting cleanups.
 * sca3000 - hide direct use of the stufftoread element by adding a
     data_available function.  This is a precursor for the addition of buffer
     watermarks to the subsystem but stands as a good cleanup on its own.
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Merge tag 'iio-for-3.17b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second round of new drivers and cleanups for IIO in the 3.17 cycle.

New drivers
* mcp4902, mcp4912 and mcp4922 SPI DAC driver.
* max1027, max1029 and max1031 SPI ADC driver.

Cleanups
* cm32181 - use devm APIs to simplify error paths.
* ak8975 - use devm APIs to simplify error paths.
* ad9850 - drop some unused defines and an unnecessary goto.
* hmc5843 - add missing devices to the device id table and the documentation.
* ad9832 - small formatting cleanups.
* sca3000 - hide direct use of the stufftoread element by adding a
    data_available function.  This is a precursor for the addition of buffer
    watermarks to the subsystem but stands as a good cleanup on its own.
2014-06-29 09:49:28 -07:00
Josselin Costanzi
9dd4694daf iio: staging: sca3000: hide stufftoread logic
Change sca3000_ring implementation so that it exports a data_available
function to iio.

Signed-off-by: Josselin Costanzi <josselin.costanzi@mobile-devices.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-29 14:43:38 +01:00
Beomho Seo
a845a3aab8 iio: magnetometer: ak8975: Use devm_* APIs
This patch use devm_* APIs make driver simpler.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-29 12:03:45 +01:00
Philippe Reynes
fc167f6248 iio: add support of the max1027
This driver add partial support of the
maxim 1027/1029/1031. Differential mode is not
supported.

It was tested on armadeus apf27 board.

Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-28 09:54:14 +01:00
Greg Kroah-Hartman
ef7994fa2a Merge 3.16-rc2 into staging-next
We want the staging fixes here as well.
2014-06-22 12:33:51 -04:00
Beomho Seo
b97855354a iio: light: cm32181: Use devm_* APIs
This patch changes API from iio_device_register() to devm_* API.
Using API make code simpler.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-21 12:40:37 +01:00
Adam Thomson
a2c12493ed iio: of_iio_channel_get_by_name() returns non-null pointers for error legs
Currently in the inkern.c code for IIO framework, the function
of_iio_channel_get_by_name() will return a non-NULL pointer when
it cannot find a channel using of_iio_channel_get() and when it
tries to search for 'io-channel-ranges' property and fails. This
is incorrect behaviour as the function which calls this expects
a NULL pointer for failure. This patch rectifies the issue.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-06-21 12:31:38 +01:00
Michael Welling
1b791fadf3 iio: dac: mcp4902/mcp4912/mcp4922 dac driver
This patch provides an iio device driver for the Microchip
MCP49x2 series DACs.

Signed-off-by: Michael Welling <mwelling@ieee.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-21 11:50:33 +01:00
Peter Meerwald
361d795002 iio:adc:ad799x: Fix reading and writing of event values, apply shift
last two bits of ADC and limit values are zero and should not be reported
(ad7993, ad7997); compare with read_raw()

event values are 10 (ad7993, ad7997) or 12 bit max., check the range on write

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Stable@vger.kernel.org
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-21 10:43:13 +01:00
Greg Kroah-Hartman
f641f66784 First round of new drivers, cleanups and functionality for the 3.17 cycle.
New drivers
 * t5403 barometric pressure sensor
 * kxcjk1013 accelerometer (with a locking followup fix).
 * ak09911 digital compass
 
 Documentation
 * ABI docs for proximity added (interface has been there a long time but
   somehow snuck through without being documented)
 * Move iio-trig-sysfs documentation out of staging (got left behind when
   the driver moved some time ago).
 
 Cleanups
  * drop the timestamp argument from iio_trigger_poll(_chained) as
    nothing has been done with it for some time.
  * ad799x kerneldoc for ad799x_chip brought up to date.
  * replace a number of reimplementations of the GENMASK macro and
    use the BIT macro to cleanup a few locations.
  * bring the iio_event_monitor example program up to date with new
    device types.
  * fix some incorrect function prototypes in iio_utils.h example code.
  * INDIO_RING_TRIGGERED to INDIO_BUFFER_TRIGGERED fix in docs. This
    got left behind after we renamed it a long time back.
  * fix error handling in the generic_buffer example program.
  * small tidy ups in the iio-trig-periodic-rtc driver.
  * Allow reseting iio-trig-periodic-rtc frequency to 0 (default) after
    it has changed.
  * Trivial tidy ups in coding style in iio_simply_dummy
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Merge tag 'iio-for-3.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new drivers, cleanups and functionality for the 3.17 cycle.

New drivers
* t5403 barometric pressure sensor
* kxcjk1013 accelerometer (with a locking followup fix).
* ak09911 digital compass

Documentation
* ABI docs for proximity added (interface has been there a long time but
  somehow snuck through without being documented)
* Move iio-trig-sysfs documentation out of staging (got left behind when
  the driver moved some time ago).

Cleanups
 * drop the timestamp argument from iio_trigger_poll(_chained) as
   nothing has been done with it for some time.
 * ad799x kerneldoc for ad799x_chip brought up to date.
 * replace a number of reimplementations of the GENMASK macro and
   use the BIT macro to cleanup a few locations.
 * bring the iio_event_monitor example program up to date with new
   device types.
 * fix some incorrect function prototypes in iio_utils.h example code.
 * INDIO_RING_TRIGGERED to INDIO_BUFFER_TRIGGERED fix in docs. This
   got left behind after we renamed it a long time back.
 * fix error handling in the generic_buffer example program.
 * small tidy ups in the iio-trig-periodic-rtc driver.
 * Allow reseting iio-trig-periodic-rtc frequency to 0 (default) after
   it has changed.
 * Trivial tidy ups in coding style in iio_simply_dummy
2014-06-18 20:02:33 -07:00
Greg Kroah-Hartman
e28642c04a First set of IIO fixes for the 3.16 cycle.
A mixed bag of fixes, many of which feel just to late for 3.15.
 
 * hid sensors - some devices need a feature report request in order to
   change power state.  This isn't part of the spec, but has been observed
   on several devices and does no harm to others.
 * mpl3115 has had two errors in the buffer description fixed. The presure is
   signed, not unsigned and the temperature has 12 bits rather than 16.
   These could lead to incorrect interpretation of the data in userspace.
 * tsl2x7x - the high byte of the proximity thresholds should be written along
   with the low byte (which was). This could lead to interesting results
   with large thresholds.
 * twl4030 - a flag to specify processed values were required was not set
   when initializing a reading.  As such values returned were in an unknown
   state. Fixed by simply initializing it appropriately.
 * IIO_SIMPLE_DUMMY_BUFFER did not select IIO_BUFFER leading to randconfig
   build errors.
 * ak8975 was applying an unwanted le16_to_cpu conversion as the i2c framework
   already performs one.  As such for big endian systems, the bytes would be
   in the wrong order in the magnetic field measurements reported.
 * mxs-lradc - the controllable voltage dividers were not enabled / disabled for
   later channels than the first one during conversion.
 * at91_adc error handling returned -ENOMEM in a u8. Return value of
   at91_adc_get_trigger_value_by_name changed to int thus allowing -ENOMEM and
   also original values to be returned.
 * mcb - mcb_request_mem returns and ERR_PTR but the caller was checking for
   NULL to detect an error.
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Merge tag 'iio-fixes-for-3.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO fixes for the 3.16 cycle.

A mixed bag of fixes, many of which feel just to late for 3.15.

* hid sensors - some devices need a feature report request in order to
  change power state.  This isn't part of the spec, but has been observed
  on several devices and does no harm to others.
* mpl3115 has had two errors in the buffer description fixed. The presure is
  signed, not unsigned and the temperature has 12 bits rather than 16.
  These could lead to incorrect interpretation of the data in userspace.
* tsl2x7x - the high byte of the proximity thresholds should be written along
  with the low byte (which was). This could lead to interesting results
  with large thresholds.
* twl4030 - a flag to specify processed values were required was not set
  when initializing a reading.  As such values returned were in an unknown
  state. Fixed by simply initializing it appropriately.
* IIO_SIMPLE_DUMMY_BUFFER did not select IIO_BUFFER leading to randconfig
  build errors.
* ak8975 was applying an unwanted le16_to_cpu conversion as the i2c framework
  already performs one.  As such for big endian systems, the bytes would be
  in the wrong order in the magnetic field measurements reported.
* mxs-lradc - the controllable voltage dividers were not enabled / disabled for
  later channels than the first one during conversion.
* at91_adc error handling returned -ENOMEM in a u8. Return value of
  at91_adc_get_trigger_value_by_name changed to int thus allowing -ENOMEM and
  also original values to be returned.
* mcb - mcb_request_mem returns and ERR_PTR but the caller was checking for
  NULL to detect an error.
2014-06-18 10:41:08 -07:00
Srinivas Pandruvada
88f6da779a iio: accel: kxcjk1013 Fix missing unlock errors
Fix unlock at two places. One when i2c error occurs and other
when trigger set state when raw read is in progress.

kbuild test robot errors:
>> >> drivers/iio/accel/kxcjk-1013.c:531:3-9: preceding lock on line 524
>> >> drivers/iio/accel/kxcjk-1013.c:376:4-10: preceding lock on line 368

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-16 20:57:36 +01:00
Srinivas Pandruvada
d14c0f10e7 iio: AK09911 : 3 axis compass support
Added IIO magnetometer driver for AK09911. In functionality is resembles
AK8975 or AK8963. But there are several differences, so instead of
modifying existing AK8975 driver and keep it clean, implemented as
a separate driver.
The key differences are:
- Register map is different and have different indexes
- AK09911 is a very compact interface with no DRDY pin. So no support
 of interrupt or GPIO poll
- Even for polled mode no mention on ST2 register, which is required in
ak8975 driver
- mode values are different for fuse access

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-16 20:55:24 +01:00
Srinivas Pandruvada
1a4fbf6a92 iio: accel: kxcjk1013 3-axis accelerometer driver
This patch adds IIO driver for KXCJK 1013 triaxis accelerometer sensor.
The specifications for this driver is downloaded from:
http://www.kionix.com/sites/default/files/KXCJK-1013%20Specifications%20Rev%202.pdf

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 17:10:21 +01:00
Peter Meerwald
398fd22b6b iio: Remove timestamp argument from iio_trigger_poll() and iio_trigger_poll_chained()
argument has been ignored; adjust drivers accordingly

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 16:25:59 +01:00
Dan Carpenter
e94f62e79f iio: adc: checking for NULL instead of IS_ERR() in probe
mcb_request_mem() returns an ERR_PTR(), it doesn't return NULL.

Fixes: 74aeac4da6 ('iio: adc: Add MEN 16z188 ADC driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-06-14 16:16:43 +01:00
Peter Meerwald
488980532d iio:adc:ad7298: Use BIT() and GENMASK() macros
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 16:04:24 +01:00
Peter Meerwald
bc74fb8191 iio:adc:ad7476: Use GENMASK() macro
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 16:03:48 +01:00
Peter Meerwald
09a1737e55 iio:adc:ad7887: Use BIT() and GENMASK() macros
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 16:03:19 +01:00
Peter Meerwald
a476bc02eb iio:adc:ad5504: Use BIT() and GENMASK() macros
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 15:48:24 +01:00
Peter Meerwald
ff96bf519a iio:adc:ad5791: Use BIT() and GENMASK() macros
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 15:44:01 +01:00
Dan Carpenter
4f3bcd878f iio: adc: at91: signedness bug in at91_adc_get_trigger_value_by_name()
at91_adc_get_trigger_value_by_name() was returning -ENOMEM truncated to
a positive u8 and that doesn't work.  I've changed it to int and
refactored it to preserve the error code.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-06-14 15:31:20 +01:00
Peter Meerwald
a3eeb1591a iio:adc:ad799x: Fix ad799x_chip_info kerneldoc
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 15:20:58 +01:00
Peter Meerwald
a2d8be6823 iio: Add t5403 barometric pressure sensor driver
16-bit pressure and temperature sensor

the chip can do I2C and SPI, only the I2C interface is supported
by the driver at the moment

datasheet: http://www.epcos.com/inf/57/ds/T5400.pdf
application note: http://www.epcos.com/blob/993154/download/1/t5403-applicationnote.pdf

an out-of-tree driver targetting the input subsystem is at
https://github.com/unixphere/t5400, it was rejected here:
http://comments.gmane.org/gmane.linux.kernel.input/28107

v2: (thanks Hartmut Knaack)
* fix MODE_HIGH, equals 2
* check INT_TIME mask in write_raw()

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Stefan Nilsson <stefan.nilsson@unixphere.com>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-14 13:15:30 +01:00
Peter Meerwald
8ba42fb7b1 iio: Fix endianness issue in ak8975_read_axis()
i2c_smbus_read_word_data() does host endian conversion already,
no need for le16_to_cpu()

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
2014-06-07 11:50:34 +01:00
Linus Torvalds
5142c33ed8 Staging driver patches for 3.16-rc1
Here is the big staging driver pull request for 3.16-rc1.
 
 Lots of stuff here, tons of cleanup patches, a few new drivers, and some
 removed as well, but I think we are still adding a few thousand more
 lines than we remove, due to the new drivers being bigger than the ones
 deleted.
 
 One notible bit of work did stand out, Jes Sorensen has gone on a tear,
 fixing up a wireless driver to be "more sane" than it originally was
 from the vendor, with over 500 patches merged here.  Good stuff, and a
 number of users laptops are better off for it.
 
 All of this has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging into next

Pull staging driver updates from Greg KH:
 "Here is the big staging driver pull request for 3.16-rc1.

  Lots of stuff here, tons of cleanup patches, a few new drivers, and
  some removed as well, but I think we are still adding a few thousand
  more lines than we remove, due to the new drivers being bigger than
  the ones deleted.

  One notible bit of work did stand out, Jes Sorensen has gone on a
  tear, fixing up a wireless driver to be "more sane" than it originally
  was from the vendor, with over 500 patches merged here.  Good stuff,
  and a number of users laptops are better off for it.

  All of this has been in linux-next for a while"

* tag 'staging-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1703 commits)
  staging: skein: fix sparse warning for static declarations
  staging/mt29f_spinand: coding style fixes
  staging: silicom: fix sparse warning for static variable
  staging: lustre: Fix coding style
  staging: android: binder.c: Use more appropriate functions for euid retrieval
  staging: lustre: fix integer as NULL pointer warnings
  Revert "staging: dgap: remove unneeded kfree() in dgap_tty_register_ports()"
  Staging: rtl8192u: r8192U_wx.c Fixed a misplaced brace
  staging: ion: shrink highmem pages on kswapd
  staging: ion: use compound pages on high order pages for system heap
  staging: ion: remove struct ion_page_pool_item
  staging: ion: simplify ion_page_pool_total()
  staging: ion: tidy up a bit
  staging: rtl8723au: Remove redundant casting in usb_ops_linux.c
  staging: rtl8723au: Remove redundant casting in rtl8723a_hal_init.c
  staging: rtl8723au: Remove redundant casting in rtw_xmit.c
  staging: rtl8723au: Remove redundant casting in rtw_wlan_util.c
  staging: rtl8723au: Remove redundant casting in rtw_sta_mgt.c
  staging: rtl8723au: Remove redundant casting in rtw_recv.c
  staging: rtl8723au: Remove redundant casting in rtw_mlme.c
  ...
2014-06-03 08:34:00 -07:00
Linus Torvalds
825f4e0271 ARM: SoC updates for 3.16 (part 1)
A quite large set of SoC updates this cycle. In no particular order:
 
 - Multi-cluster power management for Samsung Exynos, adding support for
   big.LITTLE CPU switching on EXYNOS5
 - SMP support for Marvell Armada 375 and 38x
 - SMP rework on Allwinner A31
 - Xilinx Zynq support for SOC_BUS, big endian
 - Marvell orion5x platform cleanup, modernizing the implementation and
   moving to DT.
 - _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
   that their platform can be enabled in the same kernel binary as most
   of the other v7 platforms in the tree. \o/ The work isn't quite complete,
   there's some driver fixes still needed, but the basics now work.
 
 New SoC support added:
 - Freescale i.MX6SX
 - LSI Axxia AXM55xx SoCs
 - Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800
 - STi STIH407
 
 Plus a large set of various smaller updates for different platforms. I'm
 probably missing some important one here.
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Merge tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next

Pull part one of ARM SoC updates from Olof Johansson:
 "A quite large set of SoC updates this cycle.  In no particular order:

   - Multi-cluster power management for Samsung Exynos, adding support
     for big.LITTLE CPU switching on EXYNOS5

   - SMP support for Marvell Armada 375 and 38x

   - SMP rework on Allwinner A31

   - Xilinx Zynq support for SOC_BUS, big endian

   - Marvell orion5x platform cleanup, modernizing the implementation
     and moving to DT.

   - _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
     that their platform can be enabled in the same kernel binary as
     most of the other v7 platforms in the tree.  \o/

     The work isn't quite complete, there's some driver fixes still
     needed, but the basics now work.

  New SoC support added:

   - Freescale i.MX6SX

   - LSI Axxia AXM55xx SoCs

   - Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800

   - STi STIH407

  plus a large set of various smaller updates for different platforms.
  I'm probably missing some important one here"

* tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (281 commits)
  ARM: exynos: don't run exynos4 l2x0 setup on other platforms
  ARM: exynos: Fix "allmodconfig" build errors in mcpm and hotplug
  ARM: EXYNOS: mcpm rename the power_down_finish
  ARM: EXYNOS: Enable mcpm for dual-cluster exynos5800 SoC
  ARM: EXYNOS: Enable multi-platform build support
  ARM: EXYNOS: Consolidate Kconfig entries
  ARM: EXYNOS: Add support for EXYNOS5410 SoC
  ARM: EXYNOS: Support secondary CPU boot of Exynos3250
  ARM: EXYNOS: Add Exynos3250 SoC ID
  ARM: EXYNOS: Add 5800 SoC support
  ARM: EXYNOS: initial board support for exynos5260 SoC
  clk: exynos5410: register clocks using common clock framework
  ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084
  ARM: sunxi: allow building without reset controller
  Documentation: devicetree: arm: sort enable-method entries
  ARM: rockchip: convert smp bringup to CPU_METHOD_OF_DECLARE
  clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks
  ARM: dts: axxia: Add reset controller
  power: reset: Add Axxia system reset driver
  ARM: axxia: Adding defconfig for AXM55xx
  ...
2014-06-02 16:15:12 -07:00
Paul Kocialkowski
e0326be0cd twl4030-madc: Request processed values in twl4030_get_madc_conversion
Not setting the raw parameter in the request causes it to be randomly
initialized to a value that might be different from zero or zero. This leads to
values that are randomly either raw or processed, making it very difficult to
make reliable use of the values.

Cc: Stable@vger.kernel.org
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-06-02 21:53:27 +01:00
Peter Meerwald
d29f592929 iio: Fix two mpl3115 issues in measurement conversion
(i) pressure is 20-bit unsigned, not signed; the buffer description
is incorrect; for raw reads, this is just cosmetic

(ii) temperature is 12-bit signed, not 16-bit; this affects
readout of temperatures below zero as the sign bit is incorrectly
processed

reported via private mail

Cc: stable@vger.kernel.org
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Reported-by: Robert Deliën <robert@delien.nl>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-29 17:38:36 +01:00
Archana Patni
c0a36f08f4 iio: hid-sensors: Get feature report from sensor hub after changing power state
Some sensor hubs require a get feature report call to be issued soon after
changing the power state of the sensor. Without this, the sensor remains in
the current state. This patch adds a call soon after the power state.

This is retained as a generic call across all sensor hubs since the behavior
has been noticed on more than one implementation.

Signed-off-by: Archana Patni <archana.patni@intel.com>
Signed-off-by: Subramony Sesha <subramony.sesha@intel.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-29 17:38:33 +01:00
Greg Kroah-Hartman
588079342e Third round of new stuff for IIO in the 3.16 cycle.
This (rather late) set consists only of fixes to patches earlier in the
 cycle or minor fixes for other problems (such as randconfig build issues
 picked up by Arnd).  I've included the general minor fixes here as it is
 very late in the current cycle and they can all wait for the merge window.
 
 * Recent change to hid-sensors introduced a possible infinite loop due to a
   typo. In the same series, a report interval unit read was added but in the
   case where the hardware doesn't support it a value of 0 would lead to some
   nasty issues.  The patch sets it to the specified default of msecs.
 * Anon inodes were used by IIO without being explicitly selected.  This has
   been true for a long time so it clearly only effects rather unusual
   configurations (rand configs)
 * at91 requires the input subsytem but this wasn't explicity in the Kconfig.
 * A couple of parts supported by the max1363 driver were using the wrong
   iio_chan_spec arrays and hence would missreport their bit depths.  This has
   been there a long time and was never right so isn't a regression.
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Merge tag 'iio-for-3.16c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Third round of new stuff for IIO in the 3.16 cycle.

This (rather late) set consists only of fixes to patches earlier in the
cycle or minor fixes for other problems (such as randconfig build issues
picked up by Arnd).  I've included the general minor fixes here as it is
very late in the current cycle and they can all wait for the merge window.

* Recent change to hid-sensors introduced a possible infinite loop due to a
  typo. In the same series, a report interval unit read was added but in the
  case where the hardware doesn't support it a value of 0 would lead to some
  nasty issues.  The patch sets it to the specified default of msecs.
* Anon inodes were used by IIO without being explicitly selected.  This has
  been true for a long time so it clearly only effects rather unusual
  configurations (rand configs)
* at91 requires the input subsytem but this wasn't explicity in the Kconfig.
* A couple of parts supported by the max1363 driver were using the wrong
  iio_chan_spec arrays and hence would missreport their bit depths.  This has
  been there a long time and was never right so isn't a regression.
2014-05-25 10:56:30 -07:00
Jonathan Cameron
a91a73c8b3 iio:adc:max1363 incorrect resolutions for max11604, max11605, max11610 and max11611.
Cc: Stable@vger.kernel.org>
Reported-by: Erik Habbinga <Erik.Habbinga@schneider-electric.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
2014-05-25 12:06:25 +01:00
Greg Kroah-Hartman
69c1f05379 Merge 3.15-rc6 into staging-next.
This resolves the conflicts in the files:
	drivers/iio/adc/Kconfig
	drivers/staging/rtl8723au/os_dep/usb_ops_linux.c

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-22 23:27:17 +09:00
Archana Patni
3e729974d6 iio: hid-sensors: Set default unit of measure for report interval
For PROP_REPORT_INTERVAL, the spec does not mandate the presence
of the report interval unit in the feature report and expects the
default unit of measure to be used as milliseconds.

Currently, when the unit is not present, it gets set as zero leading
to issues in sampling frequency.

This patch sets the unit of measure to the default unit if it
is not defined by firmware.

Signed-off-by: Archana Patni <archana.patni@intel.com>
Signed-off-by: Subramony Sesha <subramony.sesha@intel.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-10 11:45:02 +01:00
Arnd Bergmann
758ee467d3 iio:adc: at91 requires the input subsystem
Building the at91 adc driver with CONFIG_INPUT disabled results in this
build error:

ERROR: "input_event" [drivers/iio/adc/at91_adc.ko] undefined!
ERROR: "input_unregister_device" [drivers/iio/adc/at91_adc.ko] undefined!
ERROR: "input_free_device" [drivers/iio/adc/at91_adc.ko] undefined!
ERROR: "input_register_device" [drivers/iio/adc/at91_adc.ko] undefined!
ERROR: "input_set_abs_params" [drivers/iio/adc/at91_adc.ko] undefined!
ERROR: "input_allocate_device" [drivers/iio/adc/at91_adc.ko] undefined!

To make sure we can build random configurations, this adds a Kconfig
dependency on CONFIG_INPUT, as we do for other similar drivers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-iio@vger.kernel.org
Cc: Josh Wu <josh.wu@atmel.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-10 11:42:09 +01:00
Arnd Bergmann
cc8b49fa26 iio: always select ANON_INODES
Without ANON_INODES, we get this build error:

drivers/built-in.o: In function `iio_event_getfd':
:(.text+0x14bf18): undefined reference to `anon_inode_getfd'

All other users explicitly select this symbol, so we should
do the same thing here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-10 11:39:57 +01:00
Dan Carpenter
bf7f5204ab iio: hid-sensors: typo leads to potential forever loop
The "i < " was missing in this condition.

Fixes: 5d02edfc39 ('iio: hid-sensors: Convert units and exponent')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-10 11:38:10 +01:00
Alexandre Belloni
65b1fdbac9 iio: adc: at91: add sam9rl support
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-05-07 18:28:40 +02:00