Commit Graph

3220 Commits

Author SHA1 Message Date
Greg Kroah-Hartman 6d923f8fe8 First set of IIO fixes for the 5.0 cycle.
Been a busy month, so these are rather later than they should have been.
 
 * atlas-ph-sensor:
   - Temperature scale didn't correspond to the ABI.
 * axp288:
   - A few different fixes around the TS-pin handling.
 * ti-ads8688
   - Not enough space in the buffer used to build the scan to allow for
     the timestamp.
 * tools - iio_generic_buffer
   - Make num_loops signed so that we really are running for ever
     rather than just a long time when we specify -1.
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Merge tag 'iio-fixes-5.0a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO fixes for the 5.0 cycle.

Been a busy month, so these are rather later than they should have been.

* atlas-ph-sensor:
  - Temperature scale didn't correspond to the ABI.
* axp288:
  - A few different fixes around the TS-pin handling.
* ti-ads8688
  - Not enough space in the buffer used to build the scan to allow for
    the timestamp.
* tools - iio_generic_buffer
  - Make num_loops signed so that we really are running for ever
    rather than just a long time when we specify -1.

* tag 'iio-fixes-5.0a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: ti-ads8688: Update buffer allocation for timestamps
  tools: iio: iio_generic_buffer: make num_loops signed
  iio: adc: axp288: Fix TS-pin handling
  iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
2019-02-03 13:10:41 +01:00
Linus Torvalds 9deb9e1637 - New Device Support
- Add support for Power Supply to AXP813
    - Add support for GPIO, ADC, AC and Battery Power Supply to AXP803
    - Add support for UART to Exynos LPASS
 
  - Fix-ups
    - Use supplied MACROS; ti_am335x_tscadc
    - Trivial spelling/whitespace/alignment; tmio, axp20x, rave-sp
    - Regmap changes; bd9571mwv, wm5110-tables
    - Kconfig dependencies; MFD_AT91_USART
    - Supply shared data for child-devices; madera-core
    - Use new of_node_name_eq() API call; max77620, stmpe
    - Use managed resources (devm_*); tps65218
    - Comment descriptions; ingenic-tcu
    - Coding style; madera-core
 
  - Bug Fixes
    - Fix section mismatches; twl-core, db8500-prcmu
    - Correct error path related issues; mt6397-core, ab8500-core, mc13xxx-core
    - IRQ related fixes; tps6586x
    - Ensure proper initialisation sequence; qcom_rpm
    - Repair potential memory leak; cros_ec_dev
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Merge tag 'mfd-next-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Device Support
   - Add support for Power Supply to AXP813
   - Add support for GPIO, ADC, AC and Battery Power Supply to AXP803
   - Add support for UART to Exynos LPASS

  Fix-ups:
   - Use supplied MACROS; ti_am335x_tscadc
   - Trivial spelling/whitespace/alignment; tmio, axp20x, rave-sp
   - Regmap changes; bd9571mwv, wm5110-tables
   - Kconfig dependencies; MFD_AT91_USART
   - Supply shared data for child-devices; madera-core
   - Use new of_node_name_eq() API call; max77620, stmpe
   - Use managed resources (devm_*); tps65218
   - Comment descriptions; ingenic-tcu
   - Coding style; madera-core

  Bug Fixes:
   - Fix section mismatches; twl-core, db8500-prcmu
   - Correct error path related issues; mt6397-core, ab8500-core, mc13xxx-core
   - IRQ related fixes; tps6586x
   - Ensure proper initialisation sequence; qcom_rpm
   - Repair potential memory leak; cros_ec_dev"

* tag 'mfd-next-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (25 commits)
  mfd: exynos-lpass: Enable UART module support
  mfd: mc13xxx: Fix a missing check of a register-read failure
  mfd: cros_ec: Add commands to control codec
  mfd: madera: Remove spurious semicolon in while loop
  mfd: rave-sp: Fix typo in rave_sp_checksum comment
  mfd: ingenic-tcu: Fix bit field description in header
  mfd: tps65218: Use devm_regmap_add_irq_chip and clean up error path in probe()
  mfd: Use of_node_name_eq() for node name comparisons
  mfd: cros_ec_dev: Add missing mfd_remove_devices() call in remove
  mfd: axp20x: Add supported cells for AXP803
  mfd: axp20x: Re-align MFD cell entries
  mfd: axp20x: Add AC power supply cell for AXP813
  mfd: wm5110: Add missing ASRC rate register
  mfd: qcom_rpm: write fw_version to CTRL_REG
  mfd: tps6586x: Handle interrupts on suspend
  mfd: madera: Add shared data for accessory detection
  mfd: at91-usart: Add platform dependency
  mfd: bd9571mwv: Add volatile register to make DVFS work
  mfd: ab8500-core: Return zero in get_register_interruptible()
  mfd: tmio: Typo s/use use/use/
  ...
2019-01-15 06:24:36 +12:00
Dan Murphy f214ff521f iio: ti-ads8688: Update buffer allocation for timestamps
Per Jonathan Cameron, the buffer needs to allocate room for a
64 bit timestamp as well as the channels.  Change the buffer
to allocate this additional space.

Fixes: 2a86487786 ("iio: adc: ti-ads8688: add trigger and buffer support")
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 18:32:28 +00:00
Hans de Goede 9bcf15f75c iio: adc: axp288: Fix TS-pin handling
Prior to this commit there were 3 issues with our handling of the TS-pin:

1) There are 2 ways how the firmware can disable monitoring of the TS-pin
for designs which do not have a temperature-sensor for the battery:
a) Clearing bit 0 of the AXP20X_ADC_EN1 register
b) Setting bit 2 of the AXP288_ADC_TS_PIN_CTRL monitoring

Prior to this commit we were unconditionally setting both bits to the
value used on devices with a TS. This causes the temperature protection to
kick in on devices without a TS, such as the Jumper ezbook v2, causing
them to not charge under Linux.

This commit fixes this by using regmap_update_bits when updating these 2
registers, leaving the 2 mentioned bits alone.

The next 2 problems are related to our handling of the current-source
for the TS-pin. The current-source used for the battery temp-sensor (TS)
is shared with the GPADC. For proper fuel-gauge and charger operation the
TS current-source needs to be permanently on. But to read the GPADC we
need to temporary switch the TS current-source to ondemand, so that the
GPADC can use it, otherwise we will always read an all 0 value.

2) Problem 2 is we were writing hardcoded values to the ADC TS pin-ctrl
register, overwriting various other unrelated bits. Specifically we were
overwriting the current-source setting for the TS and GPIO0 pins, forcing
it to 80ųA independent of its original setting. On a Chuwi Vi10 tablet
this was causing us to get a too high adc value (due to a too high
current-source) resulting in the following errors being logged:

ACPI Error: AE_ERROR, Returned by Handler for [UserDefinedRegion]
ACPI Error: Method parse/execution failed \_SB.SXP1._TMP, AE_ERROR

This commit fixes this by using regmap_update_bits to change only the
relevant bits.

3) After reading the GPADC channel we were unconditionally enabling the
TS current-source even on devices where the TS-pin is not used and the
current-source thus was off before axp288_adc_read_raw call.

This commit fixes this by making axp288_adc_set_ts a nop on devices where
the ADC is not enabled for the TS-pin.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1610545
Fixes: 3091141d78 ("iio: adc: axp288: Fix the GPADC pin ...")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 17:09:55 +00:00
Matt Ranostay 0808831dc6 iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
IIO_TEMP scale value for temperature was incorrect and not in millicelsius
as required by the ABI documentation.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Fixes: 27dec00ecf (iio: chemical: add Atlas pH-SM sensor support)
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-01-12 17:06:49 +00:00
Linus Torvalds 02061181d3 Staging/IIO driver patches for 4.21-rc1
Here is the big staging and iio driver pull request for 4.21-rc1.
 
 Lots and lots of tiny patches here, nothing major at all.  Which is
 good, tiny cleanups is nice to see.  No new huge driver removal or
 addition, this release cycle, although there are lots of good IIO driver
 changes, addtions, and movement from staging into the "real" part of the
 kernel, which is always great.
 
 Full details are in the shortlog, and all of these have been in
 linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO driver updates from Greg KH:
 "Here is the big staging and iio driver pull request for 4.21-rc1.

  Lots and lots of tiny patches here, nothing major at all. Which is
  good, tiny cleanups is nice to see. No new huge driver removal or
  addition, this release cycle, although there are lots of good IIO
  driver changes, addtions, and movement from staging into the "real"
  part of the kernel, which is always great.

  Full details are in the shortlog, and all of these have been in
  linux-next for a while with no reported issues"

* tag 'staging-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (553 commits)
  staging: mt7621-mmc: Correct spelling mistakes in comments
  staging: wilc1000: fix missing read_write setting when reading data
  mt7621-mmc: char * array declaration might be better as static const
  mt7621-mmc: return statement in void function unnecessary
  mt7621-mmc: Alignment should match open parenthesis
  mt7621-mmc: Removed unnecessary blank lines
  mt7621-mmc: Fix some coding style issues
  staging: android: ashmem: doc: Fix spelling
  staging: rtl8188eu: cleanup brace coding style issues
  staging: rtl8188eu: add spaces around '&' in rtw_mlme_ext.c
  staging: rtl8188eu: change return type of is_basicrate() to bool
  staging: rtl8188eu: simplify null array initializations
  staging: rtl8188eu: change order of declarations to improve readability
  staging: rtl8188eu: make some arrays static in rtw_mlme_ext.c
  staging: rtl8188eu: constify some arrays
  staging: rtl8188eu: convert unsigned char arrays to u8
  staging: rtl8188eu: remove redundant declaration in rtw_mlme_ext.c
  staging: rtl8188eu: remove unused arrays WFD_OUI and WMM_INFO_OUI
  staging: rtl8188eu: remove unnecessary parentheses in rtw_mlme_ext.c
  staging: rtl8188eu: remove unnecessary comments in rtw_mlme_ext.c
  ...
2018-12-28 20:39:58 -08:00
Linus Torvalds c76cd634eb platform-drivers-x86 for v4.21-1
The USB Power Delivery discrete components now can be enumerated by
 i2c-multi-instantiate driver via several resources under single ACPI
 device node (ACPI ID is INT3515).
 
 Touchscreen support is added for the Mediacom Flexbook Edge 11.
 
 Mellanox driver got fixed due to updates in their firmware.
 
 The power management stub driver for AtomISP v2 is fixed in order to support
 Intel Baytrail SoCs where same quirk is needed for S0ix to work.
 
 Special key handling has been fixed for Favorites hotkey on Thinkpad, and
 Screen LOCK on ASUS.
 
 Ideapad Yoga 2 13 has no HW rfkill switch, thus, driver has been updated
 to support this.
 
 Few cleanups related to debugfs have been made in Intel IPS and
 Intel PMC drivers. Besides that Intel PMC has been extended
 to show more detailed information about Latency Tolerance.
 
 The following is an automated git shortlog grouped by driver:
 
 ACPI / scan:
  -  Create platform device for INT3515 ACPI nodes
 
 Add the VLV ISP PCI ID to atomisp2_pm:
  - Add the VLV ISP PCI ID to atomisp2_pm
 
 asus-nb-wmi:
  -  Drop mapping of 0x33 and 0x34 scan codes
  -  Map 0x35 to KEY_SCREENLOCK
 
 asus-wmi:
  -  Tell the EC the OS will handle the display off hotkey
 
 dell-laptop:
  -  Mark expected switch fall-throughs
 
 Documentation/ABI:
  -  Add new attribute for mlxreg-io sysfs interfaces
 
 Fix config space access for intel_atomisp2_pm:
  - Fix config space access for intel_atomisp2_pm
 
 i2c:
  -  acpi: Introduce i2c_acpi_get_i2c_resource() helper
  -  acpi: Use ACPI_FAILURE instead of !ACPI_SUCCESS
  -  acpi: Return error pointers from i2c_acpi_new_device()
 
 i2c-multi-instantiate:
  -  Allow to have same slaves
  -  Introduce IOAPIC IRQ support
  -  Distinguish IRQ resource type
  -  Count I2cSerialBus() resources
  -  Get rid of obsolete conditional
  -  Defer probe when no adapter found
  -  Accept errors of i2c_acpi_new_device()
 
 ideapad-laptop:
  -  Add Yoga 2 13 to no_hw_rfkill list
 
 iio:
  -  inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
 
 intel_cht_int33fe:
  -  Get rid of obsolete conditional
  -  Accept errors of i2c_acpi_new_device()
  -  Remove duplicate NULL check
 
 intel_ips:
  -  Convert to use DEFINE_SHOW_ATTRIBUTE macro
  -  Remove never happen condition
  -  NULL check before some freeing functions is not needed
  -  remove unnecessary checks in ips_debugfs_init
 
 intel_pmc_core:
  -  convert to DEFINE_SHOW_ATTRIBUTE
  -  Decode Snoop / Non Snoop LTR
  -  Fix LTR IGNORE Max offset
  -  Show Latency Tolerance info
 
 intel_telemetry:
  -  convert to DEFINE_SHOW_ATTRIBUTE
 
 mlx-platform:
  -  Convert to use SPDX identifier
  -  Allow mlxreg-io driver activation for new systems
  -  Fix LED configuration
  -  Fix tachometer registers
  -  Rename new systems product names
  -  Add definitions for new registers
 
 thinkpad_acpi:
  -  Cleanup quirks macros
  -  Change the keymap for Favorites hotkey
 
 touchscreen_dmi:
  -  Add info for the Mediacom Flexbook Edge 11
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Merge tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:

 - The USB Power Delivery discrete components now can be enumerated by
   i2c-multi-instantiate driver via several resources under single ACPI
   device node (ACPI ID is INT3515).

 - Touchscreen support is added for the Mediacom Flexbook Edge 11.

 - Mellanox driver got fixed due to updates in their firmware.

 - The power management stub driver for AtomISP v2 is fixed in order to
   support Intel Baytrail SoCs where same quirk is needed for S0ix to
   work.

 - Special key handling has been fixed for Favorites hotkey on Thinkpad,
   and Screen LOCK on ASUS.

 - Ideapad Yoga 2 13 has no HW rfkill switch, thus, driver has been
   updated to support this.

 - Few cleanups related to debugfs have been made in Intel IPS and Intel
   PMC drivers. Besides that Intel PMC has been extended to show more
   detailed information about Latency Tolerance

* tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86: (41 commits)
  platform/x86: mlx-platform: Convert to use SPDX identifier
  Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
  platform/x86: mlx-platform: Allow mlxreg-io driver activation for new systems
  platform/x86: mlx-platform: Fix LED configuration
  platform/x86: mlx-platform: Fix tachometer registers
  platform/x86: mlx-platform: Rename new systems product names
  platform/x86: mlx-platform: Add definitions for new registers
  platform/x86: intel_telemetry: convert to DEFINE_SHOW_ATTRIBUTE
  platform/x86: intel_pmc_core: convert to DEFINE_SHOW_ATTRIBUTE
  platform/x86: thinkpad_acpi: Cleanup quirks macros
  platform/x86: touchscreen_dmi: Add info for the Mediacom Flexbook Edge 11
  platform/x86: Fix config space access for intel_atomisp2_pm
  platform/x86: Add the VLV ISP PCI ID to atomisp2_pm
  platform/x86: intel_ips: Convert to use DEFINE_SHOW_ATTRIBUTE macro
  platform/x86: intel_ips: Remove never happen condition
  platform/x86: intel_ips: NULL check before some freeing functions is not needed
  platform/x86: intel_ips: remove unnecessary checks in ips_debugfs_init
  iio: inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
  ACPI / scan: Create platform device for INT3515 ACPI nodes
  platform/x86: i2c-multi-instantiate: Allow to have same slaves
  ...
2018-12-25 11:04:17 -08:00
Greg Kroah-Hartman c6cbcdea7a Second set of IIO new device support, features and cleanups for the 4.21 cycle.
Staging graduation
 * ad2s90
   - Driver for this resolver to digital chip.
 
 New drivers and device support.
 * ad5686
   - Add support for ad5310r DAC and associated fix in value read back.
 * exynos-adc
   - Support for S5PV210 which is slightly different from other parts.
 * mcp41010
   - Driver supporting MCP41010, MCP41050, MCP41100, MCP42010, MCP42050 and
   MCP42100 microchip potentiometers.
 
 New ACPI ids.
 * ak8975
   - AKM9911 ACPI HID.
 * kxcjk-1013
   - KXJ2109 ACPI HID.
   - KIOX010A ACPI HID.
 
 New features
 * ad5933
   - Explicit DT binding.
 * ad2s90
   - Explicit DT binding including dropping spi setup that is done via dt
     in favour of verifying the settings form DT.
 * adt7316
   - Explicit DT binding and support for gpio, irq_flags etc.
 * stm32-adc
   - Runtime power management.
 
 Minor fixes and cleanups
 * core
   - Protect against missing info structure.
 * ad2s90
   - SPDX
   - Add documentation fo the mutex.
 * ad7280a
   - Check allocation failure.
   - Fix an accidental replacement of an error return.
 * adt7316
   - Switch some variables to be local and rename for consistency with other
     drivers.
   - Revert a false handling of 0 as an error introduced earlier this cycle.
 * bmi160
   - Use devm functions throughout probe() to avoid need for remove().
 * hid-sensor-hub
   - White space cleanup.
 * hts221
   - MAINTAINERS entry.
 * lis302
   - Use generic name in the DT binding doc.
 * Messon-saradc
   - Check for allocation error.
   - Fix some presented clock names that break clk debugfs.
 * qcom-spmi-adc
   - A fix for initialization of the prescale property. Came late in the
     cycle, so merge window is probably the best route for this.
 * st_lsm6dsx
   - Allow for variable read length to support wider range of slave devices.
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Merge tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of IIO new device support, features and cleanups for the 4.21 cycle.

Staging graduation
* ad2s90
  - Driver for this resolver to digital chip.

New drivers and device support.
* ad5686
  - Add support for ad5310r DAC and associated fix in value read back.
* exynos-adc
  - Support for S5PV210 which is slightly different from other parts.
* mcp41010
  - Driver supporting MCP41010, MCP41050, MCP41100, MCP42010, MCP42050 and
  MCP42100 microchip potentiometers.

New ACPI ids.
* ak8975
  - AKM9911 ACPI HID.
* kxcjk-1013
  - KXJ2109 ACPI HID.
  - KIOX010A ACPI HID.

New features
* ad5933
  - Explicit DT binding.
* ad2s90
  - Explicit DT binding including dropping spi setup that is done via dt
    in favour of verifying the settings form DT.
* adt7316
  - Explicit DT binding and support for gpio, irq_flags etc.
* stm32-adc
  - Runtime power management.

Minor fixes and cleanups
* core
  - Protect against missing info structure.
* ad2s90
  - SPDX
  - Add documentation fo the mutex.
* ad7280a
  - Check allocation failure.
  - Fix an accidental replacement of an error return.
* adt7316
  - Switch some variables to be local and rename for consistency with other
    drivers.
  - Revert a false handling of 0 as an error introduced earlier this cycle.
* bmi160
  - Use devm functions throughout probe() to avoid need for remove().
* hid-sensor-hub
  - White space cleanup.
* hts221
  - MAINTAINERS entry.
* lis302
  - Use generic name in the DT binding doc.
* Messon-saradc
  - Check for allocation error.
  - Fix some presented clock names that break clk debugfs.
* qcom-spmi-adc
  - A fix for initialization of the prescale property. Came late in the
    cycle, so merge window is probably the best route for this.
* st_lsm6dsx
  - Allow for variable read length to support wider range of slave devices.

* tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (37 commits)
  iio: adc: qcom-spmi-adc5: Initialize prescale properly
  dt-bindings: iio: adc: exynos-adc: Add S5PV210 variant
  iio: adc: Allow selection of Exynos ADC on S5PV210
  iio: adc: exynos-adc: Add S5PV210 variant
  iio: bmi160: use all devm functions in probe
  iio: dac: ad5686: fix bit shift read register
  iio:dac:ad5686: Add AD5310R support
  Revert "Staging: iio: adt7316: Add an extra check for 'ret' equals to 0"
  dt-bindings: iio: accel: use a generic node name for lis302
  iio: core: check 'info' value before registering the device
  staging: iio: adc: ad7280a: fix overwrite of the returned value
  staging: iio: adc: ad7280a: check for devm_kasprint() failure
  iio: humidity: hts221: add entry in MAINTAINERS file
  iio: magnetometer: ak8975: Add the "AKM9911" ACPI HID
  staging:iio:ad2s90: Move out of staging
  staging:iio:ad2s90: Add comment to device state mutex
  staging:iio:ad2s90: Replace license text w/ SPDX identifier
  dt-bindings:iio:resolver: Add docs for ad2s90
  staging:iio:ad2s90: Add max frequency check at probe
  staging:iio:ad2s90: Remove spi setup that should be done via dt
  ...
2018-12-13 13:37:24 +01:00
Evan Green db23d88756 iio: adc: qcom-spmi-adc5: Initialize prescale properly
adc5_get_dt_data uses a local, prop, feeds it to adc5_get_dt_channel_data,
and then puts the result into adc->chan_props. The problem is
adc5_get_dt_channel_data may not initialize that structure fully, so a
garbage value is used for prescale if the optional "qcom,pre-scaling" is
not defined in DT. adc5_read_raw then uses this as an array index,
generating a crash that looks like this:

[    6.683186] Unable to handle kernel paging request at virtual address ffffff90e78c7964
Call trace:
qcom_vadc_scale_code_voltage_factor+0x74/0x104
qcom_vadc_scale_hw_calib_die_temp+0x20/0x60
qcom_adc5_hw_scale+0x78/0xa4
adc5_read_raw+0x3d0/0x65c
iio_channel_read+0x240/0x30c
iio_read_channel_processed+0x10c/0x150
qpnp_tm_get_temp+0xc0/0x40c
of_thermal_get_temp+0x7c/0x98
thermal_zone_get_temp+0xac/0xd8
thermal_zone_device_update+0xc0/0x38c
qpnp_tm_probe+0x624/0x81c
platform_drv_probe+0xe4/0x11c
really_probe+0x188/0x3fc
driver_probe_device+0xb8/0x188
__device_attach_driver+0x114/0x180
bus_for_each_drv+0xd8/0x118
__device_attach+0x180/0x27c
device_initial_probe+0x20/0x2c
bus_probe_device+0x78/0x124
deferred_probe_work_func+0xfc/0x138
process_one_work+0x3d8/0x8b0
process_scheduled_works+0x48/0x6c
worker_thread+0x488/0x7cc
kthread+0x24c/0x264
ret_from_fork+0x10/0x18

Unfortunately, when I went to add the initializer for this and tried to
boot it, my machine shut down immediately, complaining that it was
hotter than the sun. It appears that adc5_chans_pmic and adc5_chans_rev2
were initializing prescale_index as if it were directly a divisor,
rather than the index into adc5_prescale_ratios that it is.

Fix the uninitialized value, and change the static initialization to use
indices into adc5_prescale_ratios.

Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-12 17:45:30 +00:00
Jonathan Bakker d1655c7f48 iio: adc: Allow selection of Exynos ADC on S5PV210
Make it possible to use Exynos ADC driver on S5PV210 based devices.

Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-12 17:19:32 +00:00
Jonathan Bakker 882bf52fde iio: adc: exynos-adc: Add S5PV210 variant
S5PV210's ADC variant is almost the same as v1 except that it has 10
channels and doesn't require the pmu register

Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-12 17:15:05 +00:00
Martin Kelly 6e9982918c iio: bmi160: use all devm functions in probe
Currently, we're using the devm version of some but not all functions.
Switch to the devm version of iio_triggered_buffer_setup and
iio_device_register to simplify the code a bit and decrease the chance of
bugs.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-10 21:15:41 +00:00
Mircea Caprioru 0e76df5c97 iio: dac: ad5686: fix bit shift read register
This patch solves the register readback issue with the bit shift. When the
dac resolution was lower than the register size (ex. 12 bits out of 16
bits) the readback value was not shifted with the difference in bits and
the value was higher. Also a mask is applied on the read value in order to
get the value relative to the actual bit size.

Fixes: 0357e488b8 ("iio:dac:ad5686: Refactor the driver")
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-08 15:45:09 +00:00
Stefan Popa 12d323cf6d iio:dac:ad5686: Add AD5310R support
The AD5310R is a single channel DAC with 10-bit precision, which is
part of the same family as AD5311R, except that it uses the spi interface
instead of i2c. The device has a built-in 2.5V reference which is enabled
by default.

Another important difference is that the SPI write command operation is
16 bits long. The first four bits represent the command, while the
remaining 12 bits are for data. In the control reg, DB9 and DB10 are used
for power-down modes, while DB8 is the REF bit. In order to accommodate
this change, a new regmap type was defined and checked accordingly.

Because AD5310R does not have a readback register, the read_raw operation
will return "Operation is not supported".

Datasheet:
Link: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5310R_5311R.pdf

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-08 15:35:55 +00:00
Andi Shyti d45ebf1f98 iio: core: check 'info' value before registering the device
When the 'info' structure inside indio_dev is left uninitialized,
a segmentation fault occurs.

Check the 'info' value before using it and if it is equal to
NULL, return with -EINVAL.

Signed-off-by: Andi Shyti <andi@etezian.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-08 11:06:41 +00:00
Andy Shevchenko e278558a1f iio: inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
ACPI provides a generic helper to get I2C Serial Bus resources.
Use it instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-03 21:40:03 +02:00
Vignesh R 4b3ab9372f iio: adc: ti_am335x_tscadc: Improve accuracy of measurement
When performing single ended measurements with TSCADC, its recommended
to set negative input (SEL_INM_SWC_3_0) of ADC step to ADC's VREFN in the
corresponding STEP_CONFIGx register.

Also, the positive(SEL_RFP_SWC_2_0) and negative(SEL_RFM_SWC_1_0)
reference voltage for ADC step needs to be set to VREFP and VREFN
respectively in STEP_CONFIGx register.
Without these changes, there may be variation of as much as ~2% in the
ADC's digital output which is bad for precise measurement.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-12-03 11:33:20 +00:00
Greg Kroah-Hartman d5d12ce229 Merge 4.20-rc5 into staging-next
We need the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-03 07:55:28 +01:00
Stephan Gerhold 0a9ff2a13b iio: magnetometer: ak8975: Add the "AKM9911" ACPI HID
This HID is used on the ASUS MeMO Pad 7 (ME176C) tablet.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-01 16:05:56 +00:00
Matheus Tavares 9564c7a492 staging:iio:ad2s90: Move out of staging
Move ad2s90 resolver driver out of staging to the main tree.

Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Victor Colombo <victorcolombo@gmail.com>
Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-12-01 15:40:39 +00:00
Lorenzo Bianconi 3aed83caa2 iio: imu: st_lsm6dsx: do not use a fixed read len in read_oneshot
Generalize st_lsm6dsx_shub_read_oneshot in order to not use a fixed
read length and take into account iio channel realbits for single
read operations

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 14:06:30 +00:00
Colin Ian King 8611b69e95 iio: hid-sensor-hub: clean up indentation, remove extraneous tab
The statement is indented too much by one level, fix this by
removing the extraneous tab.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 14:03:59 +00:00
Fabrice Gasnier 49ad8d2892 iio: adc: stm32-adc: switch off running adc when going to low power
Switch off ADC when going to low power mode, in case it has been left
running in buffer mode. Then re-enable it when resuming.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 13:16:38 +00:00
Fabrice Gasnier 9bdbb1139c iio: adc: stm32-adc: add power management support
Add support for runtime PM & sleep. Move all regulator and clock management
to dedicated HW start/stop routines. Then rely on (runtime) PM OPS to
call them.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 13:15:24 +00:00
Fabrice Gasnier 0da98c7b28 iio: adc: stm32-adc: move self-calibration to prepare routine
Move self-calibration routine to prepare routine.
- This is precursor patch to ease power management handling.
- This also allow to factorize few error cases (error handling).

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 13:13:40 +00:00
Hans de Goede 7f6232e695 iio: accel: kxcjk1013: Add KIOX010A ACPI Hardware-ID
Various 2-in-1's use KIOX010A and KIOX020A as HIDs for 2 KXCJ91008
accelerometers. The KIOX010A HID is for the one in the base and the
KIOX020A for the accelerometer in the keyboard.

Since userspace does not have a way yet to deal with (or ignore) the
accelerometer in the keyboard, this commit just adds the KIOX010A HID
for now so that display rotation will work.

Related: https://github.com/hadess/iio-sensor-proxy/issues/166
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 12:35:26 +00:00
Chris Coffey 092cb71a60 iio: potentiometer: Add driver for Microchip MCP41xxx/42xxx
This patch adds driver support for the Microchip MCP41xxx/42xxx family
of digital potentiometers:

DEVICE      Wipers  Positions   Resistance (kOhm)
MCP41010    1       256         10
MCP41050    1       256         50
MCP41100    1       256         100
MCP42010    2       256         10
MCP42050    2       256         50
MCP42100    2       256         100

Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf

Signed-off-by: Chris Coffey <cmc@babblebit.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 12:35:26 +00:00
Martin Blumenstingl 50314f98b0 iio: adc: meson-saradc: fix internal clock names
Before this patch we are registering the internal clocks (for example on
Meson8b, where the SAR ADC IP block implements the divider and gate
clocks) with the following names:
- /soc/cbus@c1100000/adc@8680#adc_div
- /soc/cbus@c1100000/adc@8680#adc_en

This is bad because the common clock framework uses the clock to create
a directory in <debugfs>/clk. With such name, the directory creation
(silently) fails and the debugfs entry ends up being created at the
debugfs root.

With this change, the new clock names are:
- c1108680.adc#adc_div
- c1108680.adc#adc_en

This matches the clock naming scheme used in the PWM, Ethernet and MMC
drivers. It also fixes the problem with debugfs.
The idea is shamelessly taken from commit b96e9eb628 ("pwm: meson:
Fix mux clock names").

Fixes: 3921db46a8 ("iio: Convert to using %pOF instead of full_name")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 10:41:36 +00:00
Nicholas Mc Guire aad172b017 iio: adc: meson-saradc: check for devm_kasprintf failure
devm_kasprintf() may return NULL on failure of internal allocation thus
the assignments to  init.name  are not safe if not checked. On error
meson_sar_adc_clk_init() returns negative values so -ENOMEM in the
(unlikely) failure case of devm_kasprintf() should be fine here.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: 3adbf34273 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs")
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 10:38:36 +00:00
Stephan Gerhold b911b0ab0d iio: accel: kxcjk-1013: Add the "KXJ2109" ACPI HID
This HID is used on the ASUS MeMO Pad 7 (ME176C) tablet.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-25 09:31:27 +00:00
Greg Kroah-Hartman 7c0bc65c84 First set of new device support, features and cleanups for IIO in the 4.21 cycle
Along with the headline feature of 5 new drivers, we have the
 substantial addition of auxilliary sensor support on the lsm6sdx
 parts for ST.  There has also been a good set of staging cleanup
 in this period with more underway.
 
 An ever increasing number of devices supported with just a new
 ID which is a good sign that at least some manufacturers are
 continuing to stabilise their interfaces.
 
 New device support,
 * ad7124
   - New driver supporting Analog Devices' ad7124-4 and ad7124-8 parts
     with the inevitable DT binding.
 * ad7949
   - New driver supporting Analog Devices' ad7949, AD7682 and AD7689 ADCs.
 * rm3100
   - New driver supporting PNIs RM3100 magnometer with bindings and
     vendor prefix.
 * ti-dac7311
   - New driver supporting DAC7311, DAC6311 and DAC5311 TI DACs, with
     DT bindings.
 * vcnl5035
   - New driver supporting the light sensor part of the VCNL4035, with
     DT bindings
 
 Features,
 * bindings
   - Add a generic ADC channel binding as we keep reinventing this
     wheel.
 * adc128s052
   - Add IDs for additional pin compatible parts.
   - Add APCI ID seen on E3940 UP squared boards.
 * ad_sigma_delta
   - Allow for custom data register overiding default.
 * kxcjk1013
   - Add KIOX0009 ACPI ID as seen on the Acer One 10.
 * lsm6dsx
   - Rework leading to...
   - External sensor support using the built in I2C master.
   - Initial support for a slave lis2mdl magnetometer.
 * meson-saradc
   - Add temperature sensor support and bindings.
 * st_magn
   - New ID for lsm9dsl_magn with bindings
   - New ID for lis3de accelerometer
 * tpl0102
   - Add supprot for IIO_AVAIL_RANGE to report the range available
     from this device to userspace and in kernel users.
 
 Cleanups and minor fixes
 * tools
   - Allow outside specification of CFLAGS
 * ad2s90
   - Handle and spi_read error.
   - Handle spi_setup failure
   - Drop a pointless assignment.
   - Prevent a potentail race by moving device registration to after
     all other setup.
   - Add missing scale attribute.
   - Add a sanity check on channel type before trying to read it.
 * ad2s1210
   - Move to modern gpio descriptors.
   - Drop a gpioin flag which made no sense as far as we can tell.
   - Add dt table (bindings doc to follow when this is ready for
     moving out of staging).
 * ad5933
   - Drop camel-case naming of ext_clk_hz.
   - White space fixes.
 * ad7150
   - Local variable to shorten overly long line.
   - Alignment and line break fixes.
 * ad7280a
   - Handle an error path that was previously ignored.
   - Use crc8.h to build the crc table replacing custom code.
   - Avoid unecessary cast.
   - Power down the device if an error happens in probe
   - Use devm routines to simplify probe and remove.
 * ad7606
   - Alignment fixes.
 * ad7780
   - This worked as long as by coincidence an uninitialized value
     was 0.  Lets not rely on that.
   - Ensure gain update is only used with the ad778x chips that
     actually support it.
   - Tidy up pattern mask generation.
   - Read regulator when scale is requested (which should be infrequent)
     as it might have changed from initialization.
 * ad7816
   - Move to modern gpio descriptors
   - Don't use a busy_pin for ad7818 as there isn't one.
   - Ensure RD/WR and CONVST pins are outputs (previously they
     were brought up as inputs which doesn't seem to make any sense)
   - DT id table.
 * adc128s052
   - SPDX
 * adt7316
   - Alignment fix.
   - Fix data reading.  When using I2C the driver never actually
     used the value read.  This has been broken a very long time
     hence no rush to fix it now + the driver is undergoing a lot
     of cleanup.
   - Sanity check that the i2c read didn't fail to actually read
     anything.
 * dpot-dac
   - Mark a switch full through with slightly different text so that
     gcc doesn't warn on it.
 * gyro-adc
   - Fix a wrong file in the MAINTAINERS entry and add binding doc to the
     listed files.
 * ina2xx
   - Add some early returns to clarify error paths in switch.
 * lsm6dsx
   - MAINTAINERS entry.
 * max11100
   - SPDX
 * max9611
   - SPDX
 * mcp4131
   - use of_device_get_match_data in preference to spi_get_device_id
     approach.
 * rcar-adc
   - SPDX
 * sc27xx
   - Add ADC conversion timeout support to avoid possible fault.
 * ssp_sensors
   - Don't free managed resources manually.
 * st-magn
   - Add a comment to avoid future confusion over when to use -magn
     postfix (on multi chip in package parts)
   - Add BDU register for LIS3MDL where it seems to have been missed.
 * st-sensors
   - Minor spelling, grammar etc fixes.
 * tpl0102
   - Use a pointer rather than an index of an array to improve conciseness.
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Merge tag 'iio-for-4.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing

Jonathan writes:

First set of new device support, features and cleanups for IIO in the 4.21 cycle

Along with the headline feature of 5 new drivers, we have the
substantial addition of auxilliary sensor support on the lsm6sdx
parts for ST.  There has also been a good set of staging cleanup
in this period with more underway.

An ever increasing number of devices supported with just a new
ID which is a good sign that at least some manufacturers are
continuing to stabilise their interfaces.

New device support,
* ad7124
  - New driver supporting Analog Devices' ad7124-4 and ad7124-8 parts
    with the inevitable DT binding.
* ad7949
  - New driver supporting Analog Devices' ad7949, AD7682 and AD7689 ADCs.
* rm3100
  - New driver supporting PNIs RM3100 magnometer with bindings and
    vendor prefix.
* ti-dac7311
  - New driver supporting DAC7311, DAC6311 and DAC5311 TI DACs, with
    DT bindings.
* vcnl5035
  - New driver supporting the light sensor part of the VCNL4035, with
    DT bindings

Features,
* bindings
  - Add a generic ADC channel binding as we keep reinventing this
    wheel.
* adc128s052
  - Add IDs for additional pin compatible parts.
  - Add APCI ID seen on E3940 UP squared boards.
* ad_sigma_delta
  - Allow for custom data register overiding default.
* kxcjk1013
  - Add KIOX0009 ACPI ID as seen on the Acer One 10.
* lsm6dsx
  - Rework leading to...
  - External sensor support using the built in I2C master.
  - Initial support for a slave lis2mdl magnetometer.
* meson-saradc
  - Add temperature sensor support and bindings.
* st_magn
  - New ID for lsm9dsl_magn with bindings
  - New ID for lis3de accelerometer
* tpl0102
  - Add supprot for IIO_AVAIL_RANGE to report the range available
    from this device to userspace and in kernel users.

Cleanups and minor fixes
* tools
  - Allow outside specification of CFLAGS
* ad2s90
  - Handle and spi_read error.
  - Handle spi_setup failure
  - Drop a pointless assignment.
  - Prevent a potentail race by moving device registration to after
    all other setup.
  - Add missing scale attribute.
  - Add a sanity check on channel type before trying to read it.
* ad2s1210
  - Move to modern gpio descriptors.
  - Drop a gpioin flag which made no sense as far as we can tell.
  - Add dt table (bindings doc to follow when this is ready for
    moving out of staging).
* ad5933
  - Drop camel-case naming of ext_clk_hz.
  - White space fixes.
* ad7150
  - Local variable to shorten overly long line.
  - Alignment and line break fixes.
* ad7280a
  - Handle an error path that was previously ignored.
  - Use crc8.h to build the crc table replacing custom code.
  - Avoid unecessary cast.
  - Power down the device if an error happens in probe
  - Use devm routines to simplify probe and remove.
* ad7606
  - Alignment fixes.
* ad7780
  - This worked as long as by coincidence an uninitialized value
    was 0.  Lets not rely on that.
  - Ensure gain update is only used with the ad778x chips that
    actually support it.
  - Tidy up pattern mask generation.
  - Read regulator when scale is requested (which should be infrequent)
    as it might have changed from initialization.
* ad7816
  - Move to modern gpio descriptors
  - Don't use a busy_pin for ad7818 as there isn't one.
  - Ensure RD/WR and CONVST pins are outputs (previously they
    were brought up as inputs which doesn't seem to make any sense)
  - DT id table.
* adc128s052
  - SPDX
* adt7316
  - Alignment fix.
  - Fix data reading.  When using I2C the driver never actually
    used the value read.  This has been broken a very long time
    hence no rush to fix it now + the driver is undergoing a lot
    of cleanup.
  - Sanity check that the i2c read didn't fail to actually read
    anything.
* dpot-dac
  - Mark a switch full through with slightly different text so that
    gcc doesn't warn on it.
* gyro-adc
  - Fix a wrong file in the MAINTAINERS entry and add binding doc to the
    listed files.
* ina2xx
  - Add some early returns to clarify error paths in switch.
* lsm6dsx
  - MAINTAINERS entry.
* max11100
  - SPDX
* max9611
  - SPDX
* mcp4131
  - use of_device_get_match_data in preference to spi_get_device_id
    approach.
* rcar-adc
  - SPDX
* sc27xx
  - Add ADC conversion timeout support to avoid possible fault.
* ssp_sensors
  - Don't free managed resources manually.
* st-magn
  - Add a comment to avoid future confusion over when to use -magn
    postfix (on multi chip in package parts)
  - Add BDU register for LIS3MDL where it seems to have been missed.
* st-sensors
  - Minor spelling, grammar etc fixes.
* tpl0102
  - Use a pointer rather than an index of an array to improve conciseness.

* tag 'iio-for-4.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (80 commits)
  Staging: iio: adt7316: Add an extra check for 'ret' equals to 0
  Staging: iio: adt7316: Fix i2c data reading, set the data field
  dt-bindings: iio: adc: Add docs for ad7124
  iio: adc: Add ad7124 support
  dt-bindings: iio: adc: Add common ADCs properties to a separate file
  iio: ad_sigma_delta: Allow to provide custom data register address
  staging: iio: ad7816: Add device tree table.
  iio: imu: st_lsm6dsx: add entry in MAINTAINERS file
  iio: potentiometer: mcp4131: use of_device_get_match_data()
  staging: iio: adc: ad7280a: use devm_* APIs
  staging: iio: adc: ad7280a: power down the device on error in probe
  dt-bindings: iio: imu: st_lsm6dsx: add support to i2c pullup resistors
  iio: imu: st_lsm6dsx: add hw FIFO support to i2c controller
  iio: imu: st_lsm6dsx: add st_lsm6dsx_push_tagged_data routine
  iio: imu: st_lsm6dsx: add i2c embedded controller support
  iio: imu: st_lsm6dsx: introduce st_lsm6dsx_sensor_set_enable routine
  iio: imu: st_lsm6dsx: introduce ST_LSM6DSX_ID_EXT sensor ids
  iio: imu: st_lsm6dsx: remove static from st_lsm6dsx_set_watermark
  iio: imu: st_lsm6dsx: reload trimming parameter at bootstrap
  iio: imu: st_lsm6dsx: introduce locked read/write utility routines
  ...
2018-11-22 09:39:45 +01:00
Stefan Popa b3af341bbd iio: adc: Add ad7124 support
The ad7124-4 and ad7124-8 are a family of 4 and 8 channel sigma-delta ADCs
with 24-bit precision and reference.

Three power modes are available which in turn affect the output data rate:
 * Full power: 9.38 SPS to 19,200 SPS
 * Mid power: 2.34 SPS to 4800 SPS
 * Low power: 1.17 SPS to 2400 SPS

The ad7124-4 can be configured to have four differential inputs, while
ad7124-8 can have 8. Moreover, ad7124 also supports per channel
configuration. Each configuration consists of gain, reference source,
output data rate and bipolar/unipolar configuration.

Datasheets:
Link: http://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-4.pdf
Link: http://www.analog.com/media/en/technical-documentation/data-sheets/ad7124-8.pdf

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-17 16:41:09 +00:00
Lars-Peter Clausen f0aef2d018 iio: ad_sigma_delta: Allow to provide custom data register address
Some newer devices from the Sigma-Delta ADC family do have their data
register at a different address than the current default address. Add a
parameter to the ad_sigma_delta_info struct which allows to override the
default address.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-17 16:30:00 +00:00
Slawomir Stepien 853bfaf435 iio: potentiometer: mcp4131: use of_device_get_match_data()
Try to get the device's data using OF API. In case of failure, fallback
to the spi_get_device_id() method.

Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:35 +00:00
Lorenzo Bianconi 6d0205fd1e iio: imu: st_lsm6dsx: add hw FIFO support to i2c controller
Introduce hw FIFO support to lsm6dsx i2c controller.
st_lsm6dsx sensor-hub relies on SLV0 for slave configuration since SLV0
is the only channel that can be used to write into i2c slave devices.
SLV{1,2,3} channels are used to read external data and push them into
the hw FIFO

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:34 +00:00
Lorenzo Bianconi 14c7c6e1a8 iio: imu: st_lsm6dsx: add st_lsm6dsx_push_tagged_data routine
Introduce st_lsm6dsx_push_tagged_data routine to push samples
to iio buffers. st_lsm6dsx_push_tagged_data will be reused adding
hw fifo support to st_lsm6dsx i2c embedded controller in order to
improve code readability

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:34 +00:00
Lorenzo Bianconi c91c1c844e iio: imu: st_lsm6dsx: add i2c embedded controller support
i2c controller embedded in lsm6dx series can connect up to four
slave devices using accelerometer sensor as trigger for i2c
read/write operations.
Introduce sensor hub support for lsm6dso sensor. Add register map
for lis2mdl magnetometer sensor.
In order to perform single read/write operations st_lsm6dsx driver
relies on SLV0 channel (hw FIFO is not supported yet)

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:33 +00:00
Lorenzo Bianconi 1775044356 iio: imu: st_lsm6dsx: introduce st_lsm6dsx_sensor_set_enable routine
Add st_lsm6dsx_sensor_set_enable routine and remove
st_lsm6dsx_sensor_{enable/disable} ones in order to make the code more
readable and remove unnecessary functions

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:33 +00:00
Lorenzo Bianconi 6ffb55e500 iio: imu: st_lsm6dsx: introduce ST_LSM6DSX_ID_EXT sensor ids
Add ST_LSM6DSX_ID_EXT{0,1,2} sensor ids as reference for slave devices
connected to st_lsm6dsx i2c controller. Moreover introduce odr dependency
between accel and ext devices since i2c embedded controller relies on the
accelerometer sensor as bus read/write trigger so we need to enable accel
device at odr = max(accel_odr, ext_odr) in order to properly communicate
with i2c slave devices

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:33 +00:00
Lorenzo Bianconi d40464f30d iio: imu: st_lsm6dsx: remove static from st_lsm6dsx_set_watermark
Remove static qualifier from st_lsm6dsx_set_watermark routine in
order to be reused supporting st_lsm6dsx i2c controller

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:32 +00:00
Lorenzo Bianconi 19435425f2 iio: imu: st_lsm6dsx: reload trimming parameter at bootstrap
Perform a complete device reset at bootstrap reloading trimming parameter
after sw reset is completed. Device sw reset/boot is explained here:
https://www.st.com/resource/en/application_note/dm00517282.pdf,
section 5.7

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:32 +00:00
Lorenzo Bianconi 739aff87a8 iio: imu: st_lsm6dsx: introduce locked read/write utility routines
Add st_lsm6dsx_update_bits_locked, st_lsm6dsx_read_locked and
st_lsm6dsx_write_locked utility routines in order to guarantee
the bus access is atomic respect to reg page configuration.
This is a preliminary patch to add i2c sensor hub support since
i2c master registers are accessed through a reg page multiplexer

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:32 +00:00
Freeman Liu 750ac07eb2 iio: adc: sc27xx: Add ADC data conversion timeout
Sometimes the ADC controller met some problems, and it will not complete
the data conversion, that will can not wake up the read process any more
to block users. So we should add one maximum conversion time to avoid
this issue.

Signed-off-by: Freeman Liu <freeman.liu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:32 +00:00
Song Qiang 121354b2ec iio: magnetometer: Add driver support for PNI RM3100
PNI RM3100 is a high resolution, large signal immunity magnetometer,
composed of 3 single sensors and a processing chip with a MagI2C
interface.

Following functions are available:
 - Single-shot measurement from
   /sys/bus/iio/devices/iio:deviceX/in_magn_{axis}_raw
 - Triggerd buffer measurement.
 - DRDY pin for data ready trigger.
 - Both i2c and spi interface are supported.
 - Both interrupt and polling measurement is supported, depends on if
   the 'interrupts' in DT is declared.

Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:31 +00:00
Heiko Stuebner 49b623732e iio: st-accel: add support for lis3de
This commit add support for STMicroelectronics lis3de accelerometer.
Datasheet for this device can be found here:

https://www.st.com/resource/en/datasheet/lis3de.pdf

Signed-off-by: Heiko Stuebner <heiko.stuebner@bq.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:30 +00:00
Parthiban Nallathambi 55707294c4 iio: light: Add support for vishay vcnl4035
Add support for VCNL4035, which is capable of Ambient light
sensing (ALS) and proximity function. This patch adds support
only for ALS function

Signed-off-by: Parthiban Nallathambi <pn@denx.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:29 +00:00
Kuninori Morimoto efeb87d81c iio: adc: rcar-gyroadc: convert to SPDX identifiers
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:28 +00:00
Kuninori Morimoto c924eee309 iio: adc: max11100: convert to SPDX identifiers
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:27 +00:00
Kuninori Morimoto 2fa720b4b7 iio: adc: max9611: convert to SPDX identifiers
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 18:32:27 +00:00
Hans de Goede 0145b50566 iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers
Before this commit sensor_hub_input_attr_get_raw_value() failed to take
the signedness of 16 and 8 bit values into account, returning e.g.
65436 instead of -100 for the z-axis reading of an accelerometer.

This commit adds a new is_signed parameter to the function and makes all
callers pass the appropriate value for this.

While at it, this commit also fixes up some neighboring lines where
statements were needlessly split over 2 lines to improve readability.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-16 11:42:12 +00:00