Commit Graph

96 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
936a0cd52a Merge 4.1-rc4 into staging-next
We want the fixes in here for testing and merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-18 13:52:44 -07:00
Greg Kroah-Hartman
ec94efcdad The usual mixed bag of fixes for IIO in the 4.1 cycle.
Second version of this pull request as a small fix to a fix turned
 up before Greg pulled it for a cc10001 patch near the top of the tree.
 
 One core fix
 
 * Set updated for a iio kfifo was incorrectly set to false during a failed
   update, resulting in atttempts to repeat the failed operation appearing
   to succeed.
 
 This time I've decided to list the driver fixes in alphabetical order rather
 than 'randomly'.
 
 * axp288_adc - a recent change added a check for valid info masks when
   reading channels from consumer drivers.
 * bmp280 - temperature compensation was failing to read the tfine value, hence
   causing a temperature of 0 to always be returned and incorrect presure
   measurements.
 * cc10001 - Fix channel number mapping when some channels are reserved for
   remote CPUs. Fix an issue with the use of the power-up/power-down register
   (basically wrong polarity). Fix an issue due to the missinterpretting the
   return value from regulator_get_voltage. Add a delay before the start bit
   as recommended for the hardware to avoid data corruption.
 * hid pressure - fix channel spec of modfiied, but no modifier (which makes no
   sense!)
 * hid proximity - fix channel spec of modified, but no modifier (which makes
   no sense!). Fix a memory leak in the probe function.
 * mcp320x - occasional incorrect readings on dma using spi busses due to
   cacheline corruption. Fixed by forcing ___cacheline_aligned for the buffers.
 * mma9551 - buffer overrun fix (miss specified maximum length of buffers)
 * mma9553 - endian fix on status message. Add an enable element for activity
   channel. Input checking for activity period to avoid rather unpredictable
   results.
 * spmi-vadc - fix an overflow in the output value normalization seen on some
   boards.
 * st-snesors - oops due to use of a mutex that is not yet initialized during
   probe.
 * xilinx adc - Some wrong register addresses, a wrong address for vccaux
   channel, incorrect scale on VREFP and incorrect sign on VREFN.
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Merge tag 'iio-fixes-for-4.1a-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

The usual mixed bag of fixes for IIO in the 4.1 cycle.

Second version of this pull request as a small fix to a fix turned
up before Greg pulled it for a cc10001 patch near the top of the tree.

One core fix

* Set updated for a iio kfifo was incorrectly set to false during a failed
  update, resulting in atttempts to repeat the failed operation appearing
  to succeed.

This time I've decided to list the driver fixes in alphabetical order rather
than 'randomly'.

* axp288_adc - a recent change added a check for valid info masks when
  reading channels from consumer drivers.
* bmp280 - temperature compensation was failing to read the tfine value, hence
  causing a temperature of 0 to always be returned and incorrect presure
  measurements.
* cc10001 - Fix channel number mapping when some channels are reserved for
  remote CPUs. Fix an issue with the use of the power-up/power-down register
  (basically wrong polarity). Fix an issue due to the missinterpretting the
  return value from regulator_get_voltage. Add a delay before the start bit
  as recommended for the hardware to avoid data corruption.
* hid pressure - fix channel spec of modfiied, but no modifier (which makes no
  sense!)
* hid proximity - fix channel spec of modified, but no modifier (which makes
  no sense!). Fix a memory leak in the probe function.
* mcp320x - occasional incorrect readings on dma using spi busses due to
  cacheline corruption. Fixed by forcing ___cacheline_aligned for the buffers.
* mma9551 - buffer overrun fix (miss specified maximum length of buffers)
* mma9553 - endian fix on status message. Add an enable element for activity
  channel. Input checking for activity period to avoid rather unpredictable
  results.
* spmi-vadc - fix an overflow in the output value normalization seen on some
  boards.
* st-snesors - oops due to use of a mutex that is not yet initialized during
  probe.
* xilinx adc - Some wrong register addresses, a wrong address for vccaux
  channel, incorrect scale on VREFP and incorrect sign on VREFN.
2015-05-13 11:51:14 -07:00
Greg Kroah-Hartman
5ccca15567 First round of new drivers, functionality and cleanups for the 4.2 cycle
New drivers / device support
 * st sensors driver, lsm303dlh magnetometer support.
 * ltr501 - support ltr301 and ltr559 chips.
 
 New functionality
 * IIO_CHAN_INFO_CALIBEMISSIVITY for thermopile sensors.
 * kxcjk1013 - make driver operational with external trigger.
 * Add iio targets to the tools Makefile.
 
 Cleanups
 * st sensors - more helpful error message if device id wrong or irq request
   fails, explicitly make the Block Data Update optional rather
   than relying on writes to address 0 not doing anything, make interrupt
   support optional (Not always wired, and not all devices actually have
   an interrupt line.)
 * kxcjk-1013 white space additions for readability, add the KXCJ9000 ACPI
   id as seen in the wild.
 * sx9500 - GPIO reset support, refactor the GPIO interrupt code, add power
   management, optimize power usage by powering down when possible, rename
   the gpio interrupt pin to be more useful, trivial return path simplification,
   trivial formatting fixes.
 * isl29018 -  move towards ABI compliance with a view to moving this driver
   out of staging, add some brackets to ensure code works as expected.  Note
   there is no actual bug as the condition being tested is always true
   (with current devices).
 * ltr501 - add regmap support to get caching etc for later patches,
   fix a parameter sanity check that always fails (bug introduced
   earlier in this series), ACPI enumeration support,
   interrupt rate control support, interrupt support in general and
   integration time control support, code alignment cleanups.
 * mma9553 - a number of little cleanups following a review from Hartmut
   after I'd already applied the original driver patch.
 * tmp006 - prefix some defines with TMP006 for consistency.
 * tsl4531 - cleanup some wrong prefixes, presumably from copy and paste.
 * mlx90614 - check for errors in read values, add power management,
   add emissivity setting, add device tree binding documentation,
   fix a duplicate const warning.
 * ti_am335x_adc - refactor the DT parsing into a separate function.
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Merge tag 'iio-for-v4.2a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new drivers, functionality and cleanups for the 4.2 cycle

New drivers / device support
* st sensors driver, lsm303dlh magnetometer support.
* ltr501 - support ltr301 and ltr559 chips.

New functionality
* IIO_CHAN_INFO_CALIBEMISSIVITY for thermopile sensors.
* kxcjk1013 - make driver operational with external trigger.
* Add iio targets to the tools Makefile.

Cleanups
* st sensors - more helpful error message if device id wrong or irq request
  fails, explicitly make the Block Data Update optional rather
  than relying on writes to address 0 not doing anything, make interrupt
  support optional (Not always wired, and not all devices actually have
  an interrupt line.)
* kxcjk-1013 white space additions for readability, add the KXCJ9000 ACPI
  id as seen in the wild.
* sx9500 - GPIO reset support, refactor the GPIO interrupt code, add power
  management, optimize power usage by powering down when possible, rename
  the gpio interrupt pin to be more useful, trivial return path simplification,
  trivial formatting fixes.
* isl29018 -  move towards ABI compliance with a view to moving this driver
  out of staging, add some brackets to ensure code works as expected.  Note
  there is no actual bug as the condition being tested is always true
  (with current devices).
* ltr501 - add regmap support to get caching etc for later patches,
  fix a parameter sanity check that always fails (bug introduced
  earlier in this series), ACPI enumeration support,
  interrupt rate control support, interrupt support in general and
  integration time control support, code alignment cleanups.
* mma9553 - a number of little cleanups following a review from Hartmut
  after I'd already applied the original driver patch.
* tmp006 - prefix some defines with TMP006 for consistency.
* tsl4531 - cleanup some wrong prefixes, presumably from copy and paste.
* mlx90614 - check for errors in read values, add power management,
  add emissivity setting, add device tree binding documentation,
  fix a duplicate const warning.
* ti_am335x_adc - refactor the DT parsing into a separate function.
2015-05-09 18:15:50 +02:00
Linus Walleij
1038a68728 iio: magnetometer: support for lsm303dlh
The LSM303DLH accelerometer/magnetometer has a different
device identification method than using register 0x0f, instead
three registers contain a magic value. We rely on WhoAmI
to be zero for this variant.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-05-07 10:42:34 +01:00
Alban Bedel
8e71c04f86 iio:st_sensors: Fix oops when probing SPI devices
In SPI mode the transfer buffer is locked with a mutex. However this
mutex is only initilized after the probe, but some transfer needs to
be done in the probe.

To fix this bug we move the mutex initialization at the beginning of
the device probe.

Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-04-26 18:24:08 +01:00
Linus Torvalds
8de29a35dc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina:

 - quite a few firmware fixes for RMI driver by Andrew Duggan

 - huion and uclogic drivers have been substantially overlaping in
   functionality laterly.  This redundancy is fixed by hid-huion driver
   being merged into hid-uclogic; work done by Benjamin Tissoires and
   Nikolai Kondrashov

 - i2c-hid now supports ACPI GPIO interrupts; patch from Mika Westerberg

 - Some of the quirks, that got separated into individual drivers, have
   historically had EXPERT dependency.  As HID subsystem matured (as
   well as the individual drivers), this made less and less sense.  This
   dependency is now being removed by patch from Jean Delvare

 - Logitech lg4ff driver received a couple of improvements for mode
   switching, by Michal Malý

 - multitouch driver now supports clickpads, patches by Benjamin
   Tissoires and Seth Forshee

 - hid-sensor framework received a substantial update; namely support
   for Custom and Generic pages is being added; work done by Srinivas
   Pandruvada

 - wacom driver received substantial update; it now supports
   i2c-conntected devices (Mika Westerberg), Bamboo PADs are now
   properly supported (Benjamin Tissoires), much improved battery
   reporting (Jason Gerecke) and pen proximity cleanups (Ping Cheng)

 - small assorted fixes and device ID additions

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (68 commits)
  HID: sensor: Update document for custom sensor
  HID: sensor: Custom and Generic sensor support
  HID: debug: fix error handling in hid_debug_events_read()
  Input - mt: Fix input_mt_get_slot_by_key
  HID: logitech-hidpp: fix error return code
  HID: wacom: Add support for Cintiq 13HD Touch
  HID: logitech-hidpp: add a module parameter to keep firmware gestures
  HID: usbhid: yet another mouse with ALWAYS_POLL
  HID: usbhid: more mice with ALWAYS_POLL
  HID: wacom: set stylus_in_proximity before checking touch_down
  HID: wacom: use wacom_wac_finger_count_touches to set touch_down
  HID: wacom: remove hardcoded WACOM_QUIRK_MULTI_INPUT
  HID: pidff: effect can't be NULL
  HID: add quirk for PIXART OEM mouse used by HP
  HID: add HP OEM mouse to quirk ALWAYS_POLL
  HID: wacom: ask for a in-prox report when it was missed
  HID: hid-sensor-hub: Fix sparse warning
  HID: hid-sensor-hub: fix attribute read for logical usage id
  HID: plantronics: fix Kconfig default
  HID: pidff: support more than one concurrent effect
  ...
2015-04-14 09:25:26 -07:00
Jiri Kosina
2e455c27bd Merge branch 'for-4.1/sensor-hub' into for-linus
Conflicts:
	drivers/iio/common/hid-sensors/hid-sensor-trigger.c
	include/linux/hid-sensor-hub.h
2015-04-13 23:43:34 +02:00
Cristina Opriceana
66687e6aed iio: magnetometer: mag3110: Place driver on standby on error
Place driver on standby mode on error in order to prevent wasting
power. Move standby function above to be seen by the new call.

Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-01 17:24:09 +02:00
Arnd Bergmann
3608688973 iio: ak8975: fix AK09911 dependencies
ak8975 depends on I2C and GPIOLIB, so any symbols that selects
ak8975 must have the same dependency, or we get build errors:

drivers/iio/magnetometer/ak8975.c: In function 'ak8975_who_i_am':
drivers/iio/magnetometer/ak8975.c:393:2: error: implicit declaration of function 'i2c_smbus_read_i2c_block_data' [-Werror=implicit-function-declaration]
  ret = i2c_smbus_read_i2c_block_data(client, AK09912_REG_WIA1,
  ^
drivers/iio/magnetometer/ak8975.c: In function 'ak8975_set_mode':
drivers/iio/magnetometer/ak8975.c:431:2: error: implicit declaration of function 'i2c_smbus_write_byte_data' [-Werror=implicit-function-declaration]
  ret = i2c_smbus_write_byte_data(data->client,

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 57e73a423b ("iio: ak8975: add ak09911 and ak09912 support")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-02-28 11:26:54 +00:00
Srinivas Pandruvada
b3f4737d00 HID: hid-sensor-hub: Extend API for async reads
Add additional flag to read in async mode. In this mode the caller will get
reply via registered callback for capture_sample. Callbacks can be registered
using sensor_hub_register_callback function. The usage id parameter of the
capture_sample can be matched with the usage id of the requested attribute.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-02-23 15:16:37 +01:00
Srinivas Pandruvada
2d8339d0ec iio: magnetometer: ak8975: Add AK8963
Added AK8963 in the id table. Unfortunately some commercial devices
using caps version ak8963.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-01-27 18:49:59 +00:00
Srinivas Pandruvada
0ef809cf99 iio: hid-sensor-magn-3d: Introduce PM
Use common hid sensor iio pm functions. Also the poll time read and
wait is part of power up function of hid sensor iio pm function, so
remove from the client drivers.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-01-25 22:55:53 +00:00
Gwendal Grignou
57e73a423b iio: ak8975: add ak09911 and ak09912 support
Add 2 new definition entries to support ak0991x compass.
Add a more advanced function to check we are dealing with the
expected device.
Remove standalone driver for ak09911.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-12-12 12:28:20 +00:00
Gwendal Grignou
286f74c253 iio: ak8975: add definition structure per compass type
For each type of compass supported (AK8975 and AK8963),
add a definition structure for register masks, important registers,
raw data interpretation.
This change will make integrating new type of devices easier.

Remove i2c register cache. It is only used for one single register.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-12-12 12:25:14 +00:00
Gwendal Grignou
71222bf541 iio: ak8975: minor fixes
Fixes code duplication, return of function.
Check client->irq properly when setting up optional irq handler.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-22 11:28:04 +00:00
Greg Kroah-Hartman
be61a0d784 First round of new drivers, features and cleanups for IIO in the 3.19 cycle.
New drivers / supported parts
 * rockchip - rk3066-tsadc variant
 * si7020 humidity and temperature sensor
 * mcp320x - add mcp3001, mcp3002, mcp3004, mcp3008, mcp3201, mcp3202
 * bmp280 pressure and temperature sensor
 * Qualcomm SPMI PMIC current ADC driver
 * Exynos_adc - support exynos7
 
 New features
 * vf610-adc - add temperature sensor support
 * Documentation of current attributes, scaled pressure, offset and
   scaled humidity, RGBC intensity gain factor and scale applied to
   differential voltage channels.
 * Bring iio_event_monitor up to date with newer modifiers.
 * Add of_xlate function to allow for complex channel mappings from the
   device tree.
 * Add -g parameter to generic_buffer example to allow for devices with
   directly fed (no trigger) buffers.
 * Move exynos driver over to syscon for PMU register access.
 
 Cleanups, fixes for new drivers
 * lis3l02dq drop an unneeded else.
 * st sensors - renam st_sensors to st_sensor_settings (for clarity)
 * st sensors - drop an unused parameter from all the probe utility
   functions.
 * vf610 better error handling and tidy up.
 * si7020 - cleanups following merge
 * as3935 - drop some unnecessary semicolons.
 * bmp280 - fix the pressure calculation.
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Merge tag 'iio-for-3.19a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new drivers, features and cleanups for IIO in the 3.19 cycle.

New drivers / supported parts
* rockchip - rk3066-tsadc variant
* si7020 humidity and temperature sensor
* mcp320x - add mcp3001, mcp3002, mcp3004, mcp3008, mcp3201, mcp3202
* bmp280 pressure and temperature sensor
* Qualcomm SPMI PMIC current ADC driver
* Exynos_adc - support exynos7

New features
* vf610-adc - add temperature sensor support
* Documentation of current attributes, scaled pressure, offset and
  scaled humidity, RGBC intensity gain factor and scale applied to
  differential voltage channels.
* Bring iio_event_monitor up to date with newer modifiers.
* Add of_xlate function to allow for complex channel mappings from the
  device tree.
* Add -g parameter to generic_buffer example to allow for devices with
  directly fed (no trigger) buffers.
* Move exynos driver over to syscon for PMU register access.

Cleanups, fixes for new drivers
* lis3l02dq drop an unneeded else.
* st sensors - renam st_sensors to st_sensor_settings (for clarity)
* st sensors - drop an unused parameter from all the probe utility
  functions.
* vf610 better error handling and tidy up.
* si7020 - cleanups following merge
* as3935 - drop some unnecessary semicolons.
* bmp280 - fix the pressure calculation.
2014-11-05 11:42:48 -08:00
Denis CIOCCA
7be178bb48 iio:common: Set the device pointer into ST common sensors library
Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-04 11:26:21 +01:00
Denis CIOCCA
2109eb4c0c iio:magnetometer: Removed unnecessary parameter on common_probe function
Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-04 11:25:19 +01:00
Denis CIOCCA
a7ee8839da iio:imu: changed structure name from st_sensors to st_sensor_settings
This patch change structure name and related variables names.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-10-04 11:23:13 +01:00
Greg Kroah-Hartman
d84a2b0d6f Merge 3.17-rc6 into staging-next.
We want the fixes in there, and it resolves a merge issue with
drivers/iio/accel/bma180.c

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22 07:30:03 -07:00
Irina Tirdea
48edc37481 iio: magn: ak8975: fix unnecessary casting between char* and const char*
Use const char* instead of casting const char* to char*.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 18:31:11 +01:00
Denis CIOCCA
a31d092899 iio:magnetometer: bugfix magnetometers gain values
This patch fix gains values. The first driver was designed using
engineering samples, in mass production the values are changed.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Cc: Stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14 18:21:23 +01:00
Sanjeev Sharma
81816affea iio: remove .owner field for driver using module_platform_driver
This patch removes the .owner field for drivers which use the
platform_driver_register api because this is overriden in
_platform_driver_register.

Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@mentor.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-26 21:08:38 +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
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
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
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
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
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
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
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
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
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
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
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
Srinivas Pandruvada
8009c594a5 iio: hid-sensors: Compass 3D: Raw read support
Added support for raw reading of channel. If the sensor is powered
off, it will turn on for reading value

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-05 10:59:52 +01:00
Srinivas Pandruvada
56ff6be608 iio: hid-sensors: Add API to power on/off
Added an API to allow client drivers to turn ON and OFF sensors for
quick read. Added data_read as counting varaible instead of boolean,
so that sensor is powered off only when last user released it.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-05 10:59:49 +01:00
Srinivas Pandruvada
92463fdab5 iio: hid-sensors: Compass 3D: adjust scale and offset
Using units and unit exponent to calculate scale which is compliant
to IIO ABI.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-05 10:59:47 +01:00
Srinivas Pandruvada
88cece46ac iio: ak8975: Fix issue with the name
Fixing issue caused by clash of two patches, one adding a name with
the acpi enumeration patch.

54ab3e24 Beomho Seo          2014-04-02 @572  	indio_dev->name = id->name;
d913971e Srinivas Pandruvada 2014-03-19  574  	indio_dev->name = name;

The name added by commit 54ab3e24 is not required as this is already
added by taking care of case where id is NULL.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-03 12:01:13 +01:00
Peter Meerwald
0828eddc56 iio:magnetometer:mag3110: Enable user offset calibration
add IIO_CHAN_INFO_CALIBBIAS

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-03 11:27:52 +01:00
Peter Meerwald
6584891bd0 iio:magnetometer:mag3110: Fix initialization of ctrl_reg1
DR bits need to be shifted; since MAG3110_CTRL_DR_DEFAULT is
zero, the change has no effect

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-05-03 11:19:42 +01:00
Linus Walleij
ea7e586bdd iio: st_sensors: move regulator retrieveal to core
Currently the pressure sensor has code to retrieve and enable two
regulators for Vdd and Vdd IO, but actually these voltage inputs
are found on all of these ST sensors, so move the regulator
handling to the core and make sure all the ST sensors call these
functions on probe() and remove() to enable/disable power.

Here also mover over to obtaining the regulator from the *parent*
device of the IIO device, as the IIO device is created on-the-fly
in this very subsystem it very unlikely evert have any regulators
attached to it whatsoever. It is much more likely that the parent
is a platform device, possibly instantiated from a device tree,
which in turn have Vdd and Vdd IO supplied assigned to it.

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>
2014-04-26 11:52:42 +01:00
Linus Walleij
4f544ced19 iio: st_sensors: announce registered sensors
It is pretty helpful to know already from dmesg that a certain
device is successfully registered, instead of having to browse
sysfs to see if it's actually there.

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>
2014-04-26 11:50:59 +01:00
Srinivas Pandruvada
d913971eca iio: ak8975: Added ACPI enumeration
Added capability so that this device can be enumerated via ACPI.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-03-29 10:40:39 +00:00
Srinivas Pandruvada
6027c077f6 iio: ak8975 : Add AK8963 compatibility mode support
AK8963 and AK8975 use same register definitions, except the range
of X,Y,Z values. Added support of 8963 based on i2c_device_id.
Unfortunately there is no way to detect the type via registers,
both device registers return 0x48 as id of chipset.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-03-22 12:41:37 +00:00
Peter Meerwald
b2addb4a11 iio:magnetometer:mag3110: Fix unreachable code
drivers/iio/magnetometer/mag3110.c:197 mag3110_read_raw()
        info: ignoring unreachable code.

drivers/iio/magnetometer/mag3110.c
   185          case IIO_CHAN_INFO_SCALE:
   186                  switch (chan->type) {
   187                  case IIO_MAGN:
   188                          *val = 0;
   189                          *val2 = 1000;
   190                          return IIO_VAL_INT_PLUS_MICRO;
   191                  case IIO_TEMP:
   192                          *val = 1000;
   193                          return IIO_VAL_INT;
   194                  default:
   195                          return -EINVAL;
   196                  }
   197                  return IIO_VAL_INT_PLUS_MICRO;
                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

introduced by f9279d3a, mag3110: Scale factor missing

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-02-25 20:45:58 +00:00
Peter Meerwald
f9279d3a8c iio:magnetometer:mag3110: Scale factor missing for temperature
temperature is reported in milli-Celsius

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-02-15 09:54:46 +00:00
Greg Kroah-Hartman
e5b9c05772 First set of new drivers and cleanups for IIO in the 3.15 cycle.
New drivers:
 * si7005 relative humidity and temperature sensor
 * Lite-on ltr501 ambient light and proximity sensor
 
 Cleanups
 * Clean up some dead comments in max1363
 * Drop some obsolete variables in adjd_s311 and tcs3472 left over from
   the introduction of iio_push_to_buffers_with_timestamp.
 * Drop some unneeded linux/init.h includes
 * Squish a sparse warning in mpl3115 by correctly specifying a be32 variable.
 * A number of cleanups and fixes for sca3000
 * Drop an unneed checks in mxs-lradc, ad7303 and adis16400.
 * Drop a platform_set_drvdata in viperboard after the only use of it was
   removed during a devm conversion.
 * Add a missing device name for ak8975 to comply with the ABI.
 * Put mpu6050 into the IMU menu as it slipped out into the main menu.
 * Fix a typo and some comment formatting in mpu6050.
 * Document at91 ADC clock properties.
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Merge tag 'iio-for-3.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First set of new drivers and cleanups for IIO in the 3.15 cycle.

New drivers:
* si7005 relative humidity and temperature sensor
* Lite-on ltr501 ambient light and proximity sensor

Cleanups
* Clean up some dead comments in max1363
* Drop some obsolete variables in adjd_s311 and tcs3472 left over from
  the introduction of iio_push_to_buffers_with_timestamp.
* Drop some unneeded linux/init.h includes
* Squish a sparse warning in mpl3115 by correctly specifying a be32 variable.
* A number of cleanups and fixes for sca3000
* Drop an unneed checks in mxs-lradc, ad7303 and adis16400.
* Drop a platform_set_drvdata in viperboard after the only use of it was
  removed during a devm conversion.
* Add a missing device name for ak8975 to comply with the ABI.
* Put mpu6050 into the IMU menu as it slipped out into the main menu.
* Fix a typo and some comment formatting in mpu6050.
* Document at91 ADC clock properties.
2014-02-11 14:12:12 -08:00