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Author SHA1 Message Date
Linus Torvalds
2d945dde7f This is the usual collection of primarily clk driver updates. The big part of 
the diff is all the new Qualcomm clk drivers added for a few SoCs they're
 working on. The other two vendors with significant work this cycle are Renesas
 and Amlogic. Renesas adds a bunch of clks to existing drivers and supports some
 new SoCs while Amlogic is starting a significant refactoring to simplify their
 code.
 
 The core framework gained a pair of helpers to get the 'struct device' or
 'struct device_node' associated with a 'struct clk_hw'. Some associated KUnit
 tests were added for these simple helpers as well. Beyond that core change
 there are lots of little fixes throughout the clk drivers for the stuff we see
 every day, wrong clk driver data that affects tree topology or supported
 frequencies, etc. They're not found until the clks are actually used by some
 consumer device driver.
 
 New Drivers:
  - Global, display, gpu, video, camera, tcsr, and rpmh clock controller for the
    Qualcomm Milos SoC
  - Camera, display, GPU, and video clock controllers for Qualcomm QCS615
  - Video clock controller driver for Qualcomm SM6350
  - Camera clock controller driver for Qualcomm SC8180X
  - I3C clocks and resets on Renesas RZ/G3E
  - Expanded Serial Peripheral Interface (xSPI) clocks and resets on
    Renesas RZ/V2H(P) and RZ/V2N
  - SPI (RSPI) clocks and resets on Renesas RZ/V2H(P)
  - SDHI and I2C clocks on Renesas RZ/T2H and RZ/N2H
  - Ethernet clocks and resets on Renesas RZ/G3E
  - Initial support for the Renesas RZ/T2H (R9A09G077) and RZ/N2H
    (R9A09G087) SoCs
  - Ethernet clocks and resets on Renesas RZ/V2H and RZ/V2N
  - Timer, I2C, watchdog, GPU, and USB2.0 clocks and resets on Renesas
    RZ/V2N
 
 Updates:
  - Support atomic PWMs in the PWM clk driver
  - clk_hw_get_dev() and clk_hw_get_of_node() helpers
  - Replace round_rate() with determine_rate() in various clk drivers
  - Convert clk DT bindings to DT schema format for DT validation
  - Various clk driver cleanups and refactorings from static analysis tools and
    possibly real humans
  - A lot of little fixes here and there to things like clk tree topology,
    missing frequencies, flagging clks as critical, etc. The full details are in
    the commits and sub-tree merge logs
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "This is the usual collection of primarily clk driver updates.

  The big part of the diff is all the new Qualcomm clk drivers added for
  a few SoCs they're working on. The other two vendors with significant
  work this cycle are Renesas and Amlogic. Renesas adds a bunch of clks
  to existing drivers and supports some new SoCs while Amlogic is
  starting a significant refactoring to simplify their code.

  The core framework gained a pair of helpers to get the 'struct device'
  or 'struct device_node' associated with a 'struct clk_hw'. Some
  associated KUnit tests were added for these simple helpers as well.

  Beyond that core change there are lots of little fixes throughout the
  clk drivers for the stuff we see every day, wrong clk driver data that
  affects tree topology or supported frequencies, etc. They're not found
  until the clks are actually used by some consumer device driver.

  New Drivers:
   - Global, display, gpu, video, camera, tcsr, and rpmh clock
     controller for the Qualcomm Milos SoC
   - Camera, display, GPU, and video clock controllers for Qualcomm
     QCS615
   - Video clock controller driver for Qualcomm SM6350
   - Camera clock controller driver for Qualcomm SC8180X
   - I3C clocks and resets on Renesas RZ/G3E
   - Expanded Serial Peripheral Interface (xSPI) clocks and resets on
     Renesas RZ/V2H(P) and RZ/V2N
   - SPI (RSPI) clocks and resets on Renesas RZ/V2H(P)
   - SDHI and I2C clocks on Renesas RZ/T2H and RZ/N2H
   - Ethernet clocks and resets on Renesas RZ/G3E
   - Initial support for the Renesas RZ/T2H (R9A09G077) and RZ/N2H
     (R9A09G087) SoCs
   - Ethernet clocks and resets on Renesas RZ/V2H and RZ/V2N
   - Timer, I2C, watchdog, GPU, and USB2.0 clocks and resets on Renesas
     RZ/V2N

  Updates:
   - Support atomic PWMs in the PWM clk driver
   - clk_hw_get_dev() and clk_hw_get_of_node() helpers
   - Replace round_rate() with determine_rate() in various clk drivers
   - Convert clk DT bindings to DT schema format for DT validation
   - Various clk driver cleanups and refactorings from static analysis
     tools and possibly real humans
   - A lot of little fixes here and there to things like clk tree
     topology, missing frequencies, flagging clks as critical, etc"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (216 commits)
  clk: clocking-wizard: Fix the round rate handling for versal
  clk: Fix typos
  clk: spacemit: ccu_pll: fix error return value in recalc_rate callback
  clk: tegra: periph: Make tegra_clk_periph_ops static
  clk: tegra: periph: Fix error handling and resolve unsigned compare warning
  clk: imx: scu: convert from round_rate() to determine_rate()
  clk: imx: pllv4: convert from round_rate() to determine_rate()
  clk: imx: pllv3: convert from round_rate() to determine_rate()
  clk: imx: pllv2: convert from round_rate() to determine_rate()
  clk: imx: pll14xx: convert from round_rate() to determine_rate()
  clk: imx: pfd: convert from round_rate() to determine_rate()
  clk: imx: frac-pll: convert from round_rate() to determine_rate()
  clk: imx: fracn-gppll: convert from round_rate() to determine_rate()
  clk: imx: fixup-div: convert from round_rate() to determine_rate()
  clk: imx: cpu: convert from round_rate() to determine_rate()
  clk: imx: busy: convert from round_rate() to determine_rate()
  clk: imx: composite-93: remove round_rate() in favor of determine_rate()
  clk: imx: composite-8m: remove round_rate() in favor of determine_rate()
  clk: qcom: Remove redundant pm_runtime_mark_last_busy() calls
  clk: imx: Remove redundant pm_runtime_mark_last_busy() calls
  ...
 2025-07-31 13:36:27 -07:00
Nuno Sá
2ad26b7bed
include: linux: move adi-axi-common.h out of fpga 
The adi-axi-common.h header has some common defines used in various ADI
IPs. However they are not specific for any fpga manager so it's
questionable for the header to live under include/linux/fpga. Hence
let's just move one directory up and update all users.

Suggested-by: Xu Yilun <yilun.xu@linux.intel.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for IIO
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250519-dev-axi-clkgen-limits-v6-3-bc4b3b61d1d4@analog.com
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Uwe Kleine-König <ukleinek@kernel.org>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 2025-06-30 17:57:15 -07:00
Angelo Dureghello
9182f3b4c3 iio: dac: adi-axi-dac: use unique bus free check 
Use a unique function for the bus free check by polling, to reduce
duplicated code. An error is always thrown in case of timeout.

Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250523-ad3552r-fix-bus-read-v3-2-310e726dd964@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-06-09 07:45:35 +01:00
Greg Kroah-Hartman
0ca7cb7089 IIO: New device support, features and cleanup for 6.16 - take 2 
Note - last minute rebase was to drop a typo patch that I'd accidentally
 picked up (in the microblaze arch Kconfig)
 Take 2 is due to that rebase messing up some fixes tags that were
 referring to patches after that point.
 
 There is a known merge conflict due to changes in neighbouring lines.
 
 Stephen's resolution in linux-next is:
 https://lore.kernel.org/linux-next/20250506155728.65605bae@canb.auug.org.au/
 
 Added 3 named IIO reviewers to MAINTAINERS. This is a reflection of those
 who have been doing much of this work for some time. Lars-Peter is
 removed from the entry having moved on to other topics.  Thanks
 Nuno, David and Andy for stepping up and Lars-Peter for all your
 hard work in the past!
 
 Includes the usual mix of new device support, features and general
 cleanup.
 
 This time we also have some tree wide changes.
 
 - Rip out the iio_device_claim_direct_scoped() as it proved hard to work
   with.  This series includes quite a few related cleanups such as use
   of guard or factoring code out to allow direct returns.
 - Switch from iio_device_claim/release_direct_mode() to new
   iio_device_claim/release_direct() which is structured so that sparse
   can warn on failed releases. There were a few false positives but
   those were mostly in code that benefited from being cleaned up as part
   of this process.
 - Introduce iio_push_to_buffers_with_ts() to replace the _timestamp()
   version over time. This version takes the size of the supplied buffer
   which the core checks is at least as big as expected by calculation
   from channel descriptions of those channels enabled. Use this in
   an initial set of drivers.
 - Add macros for IIO_DECLARE_BUFFER_WITH_TS() and
   IIO_DECLARE_DMA_BUFFER_WITH_TS() to avoid lots of fiddly code to ensure
   correctly aligned buffers for timestamps being added onto the end of
   channel data.
 
 New device support
 ------------------
 
 adi,ad3530r
 - New driver for AD3530, AD3530R, AD3531 and AD3531R DACs with
   programmable gain controls. R variants have internal references.
 adi,ad7476
 - Add support (dt compatible only) for the Rohm BU79100G ADC which is
   fully compatible with the ti,ads7866.
 adi,ad7606
 - Support ad7606c-16 and ad7606c-18 devices. Includes switch to dynamic
   channel information allocation.
 adi,ad7380
 - Add support for the AD7389-4
 dfrobot,sen0322
 - New driver for this oxygen sensor.
 mediatek,mt2701-auxadc
 - Add binding for MT6893 which is fully compatible with already supported
   MT8173.
 meson-saradc
 - Support the GXLX SoCs.  Mostly this is a workaround for some unrelated
   clock control bits found in the ADC register map.
 nuvoton,nct7201
 - New driver for NCT7201 and NCT7202 I2C ADCs.
 rohm,bd79124
 - New driver for this 12-bit, 8-channel SAR ADC.
 - Switch to new set_rv etc gpio callbacks that were added in 6.15.
 rohm,bd79703
 - Add support for BD79700, BD79701 and BD79702 DACs that have subsets of
   functionality of the already supported bd79703.  Included making this
   driver suitable for support device variants.
 st,stm32-lptimer
 - Add support for stm32pm25 to this trigger.
 
 Features
 --------
 
 Beyond IIO
 - Property iterator for named children.
 core
 - Enable writes for 64 bit integers used for standard IIO ABI elements.
   Previously these could be read only.
 - Helper library that should avoid code duplication for simpler ADC
   bindings that have a child node per channel.
 - Enforce that IIO_DMA_MINALIGN is always at least 8 (almost always true
   and simplifies code on all significant architectures)
 core/backend
 - Add support to control source of data - useful when the HDL includes
   things like generated ramps for testing purposes. Enable this for
   adi-axi-dac
 adi,ad3552-hs
 - Add debugfs related callbacks to allow debug access to register contents.
 adi,ad4000
 - Support SPI offload with appropriate FPGA firmware along with improving
   documentation.
 adi,ad7293
 - Add support for external reference voltage.
 adi,ad7606
 - Support SPI offload.
 adi,ad7768-1
 - Support reset GPIO.
 adi,admv8818
 - Support filter frequencies beyond 2^32.
 adi,adxl345
 - Add single and double tap events.
 hid-sensor-prox
 - Support 16-bit report sizes as seen on some Intel platforms.
 invensense,icm42600
 - Enable use of named interrupts to avoid problems with some wiring choices.
   Get the interrupt by name, but fallback to previous assumption on the first
   being INT1 if no names are supplied.
 microchip,mcp3911
 - Add reset gpio support.
 rohm,bh7150
 - Add reset gpio support.
 st,stm32
 - Add support to control oversampling.
 ti,adc128s052
 - Add support for ROHM BD79104 which is early compatible with the TI
   parts already supported by this driver. Includes some general driver
   cleanup and a separate dt binding.
 - Simplify reference voltage handling by assuming it is fixed after enabling
   the supply.
 winsen,mhz19b
 - New driver for this C02 sensor.
 
 Cleanup and minor fixes
 -----------------------
 
 dt-bindings
 - Correct indentation and style for DTS examples.
 - Use unevalutateProperties for SPI devices instead of additionalProperties
   to allow generic SPI properties from spi-peripheral-props.yaml
 ABI Docs
 - Add missing docs for sampling_frequency when it applies only to events.
 Treewide
 - Various minor tweaks, comment fixes and similar.
 - Sort TI ADCs in Kconfig that had gotten out of order.
 - Switch various drives that provide GPIO chip functionality to the new
   callbacks with return values.
 - Standardize on { } formatting for all array sentinels.
 - Make use of aligned_s64 in a few places to replace either wrong types
   or manually defined equivalents.
 - Drop places where spi bits_per_word is set to 8 because that is the
   default anyway.
 
 adi,ad_sigma_delta library
 - Avoid a potential use of uninitialized data if reg_size has a value
   that is not supported (no drivers hit this but it is reasonable hardening)
 adi,ad4030
 - Add error checking for scan types and no longer store it in state.
 - Rework code to reduce duplication.
 - Move setting the mode from buffer preenable() to update_scan_mode(),
   better matching expected semantics of the two different callbacks.
 - Improve data marshalling comments.
 adi,ad4695
 - Use u16 for buffer elements as oversampling is not yet supported except
   with SPI offload (which doesn't use this path).
 adi,ad5592r
 - Clean up destruction of mutexes.
 - Use lock guards to simplify code (later patch fixes a missed unlock)
 adi,ad5933
 - Correct some incorrect settling times.
 adi,ad7091
 - Deduplicate handling of writable vs volatile registers as they are the
   inverse of each other for this device.
 adi,ad7124
 - Fix 3db Filter frequency.
 - Remove ability to directly write the filter frequency (which was broken)
 - Register naming improvements.
 adi,ad7606
 - Add a missing return value check.
 - Fill in max sampling rates for all chips.
 - Use devm_mutex_init()
 - Fix up some kernel-doc formatting issues.
 - Remove some camel case that snuck in.
 - Drop setting address field in channels as easily established from other
   fields.
 - Drop unnecessary parameter to ad76060_scale_setup_cb_t.
 adi,ad7768-1
 - Convert to regmap.
 - Factor out buffer allocation.
 - Tidy up headers.
 adi,ad7944
 - Stop setting bits_per_word in SPI xfers with no data.
 adi,ad9832
 - Add of_device_id table rather than just relying on fallbacks.
 - Use FIELD_PREP() to set values of fields.
 adi,admv1013
 - Cleanup a pointless ternary.
 adi,admv8818
 - Fix up LPF Band 5 frequency which was slightly wrong.
 - Fix an integer overflow.
 - Fix range calculation
 adi,adt7316
 - Replace irqd_get_trigger_type(irq_get_irq_data()) with simpler
   irq_get_trigger_type()
 adi,adxl345
 - Use regmap cache instead of various state variables that were there to
   reduce bus accesses.
 - Make regmap return value checking consistent across all call sites.
 adi,axi-dac
 - Add a check on number of channels (0 to 15 valid)
 allwinner,sun20i
 - Use new adc-helpers to replace local parsing code for channel nodes.
 bosch,bmp290
 - Move to local variables for sensor data marshalling removing the need
   for a messy definition that has to work for all supported parts.
   Follow up fix adds a missing initialization.
 dynaimage,al3010 and dynaimage,al3320a
 - Various minor cleanup to bring these drivers inline with reviewed feedback
   given on a new driver.
 - Fix an error path in which power down is not called when it should be.
 - Switch to regmap.
 google,cros_ec
 - Fix up a flexible array in middle of structure warning.
 - Flush fifo when changing the timeout to avoid potential long wait
   for samples.
 hid-sensor-rotation
 - Remove an __aligned(16) marking that doesn't seem to be justified.
 kionix,kxcjk-1013
 - Deduplicate code for setting up interrupts.
 microchip,mcp3911
 - Fix handling of conversion results register which differs across supported
   devices.
 idt,zopt2201
 - Avoid duplicating register lists as all volatile registers are the
   inverse of writeable registers on this device.
 renesas,rzg2l
 - Use new adc-helpers to replace local parsing code for channel nodes.
 ti,ads1298
 - Fix a missing Kconfig dependency.
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Merge tag 'iio-for-6.16a-take2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: New device support, features and cleanup for 6.16 - take 2

Note - last minute rebase was to drop a typo patch that I'd accidentally
picked up (in the microblaze arch Kconfig)
Take 2 is due to that rebase messing up some fixes tags that were
referring to patches after that point.

There is a known merge conflict due to changes in neighbouring lines.

Stephen's resolution in linux-next is:
https://lore.kernel.org/linux-next/20250506155728.65605bae@canb.auug.org.au/

Added 3 named IIO reviewers to MAINTAINERS. This is a reflection of those
who have been doing much of this work for some time. Lars-Peter is
removed from the entry having moved on to other topics.  Thanks
Nuno, David and Andy for stepping up and Lars-Peter for all your
hard work in the past!

Includes the usual mix of new device support, features and general
cleanup.

This time we also have some tree wide changes.

- Rip out the iio_device_claim_direct_scoped() as it proved hard to work
  with.  This series includes quite a few related cleanups such as use
  of guard or factoring code out to allow direct returns.
- Switch from iio_device_claim/release_direct_mode() to new
  iio_device_claim/release_direct() which is structured so that sparse
  can warn on failed releases. There were a few false positives but
  those were mostly in code that benefited from being cleaned up as part
  of this process.
- Introduce iio_push_to_buffers_with_ts() to replace the _timestamp()
  version over time. This version takes the size of the supplied buffer
  which the core checks is at least as big as expected by calculation
  from channel descriptions of those channels enabled. Use this in
  an initial set of drivers.
- Add macros for IIO_DECLARE_BUFFER_WITH_TS() and
  IIO_DECLARE_DMA_BUFFER_WITH_TS() to avoid lots of fiddly code to ensure
  correctly aligned buffers for timestamps being added onto the end of
  channel data.

New device support
------------------

adi,ad3530r
- New driver for AD3530, AD3530R, AD3531 and AD3531R DACs with
  programmable gain controls. R variants have internal references.
adi,ad7476
- Add support (dt compatible only) for the Rohm BU79100G ADC which is
  fully compatible with the ti,ads7866.
adi,ad7606
- Support ad7606c-16 and ad7606c-18 devices. Includes switch to dynamic
  channel information allocation.
adi,ad7380
- Add support for the AD7389-4
dfrobot,sen0322
- New driver for this oxygen sensor.
mediatek,mt2701-auxadc
- Add binding for MT6893 which is fully compatible with already supported
  MT8173.
meson-saradc
- Support the GXLX SoCs.  Mostly this is a workaround for some unrelated
  clock control bits found in the ADC register map.
nuvoton,nct7201
- New driver for NCT7201 and NCT7202 I2C ADCs.
rohm,bd79124
- New driver for this 12-bit, 8-channel SAR ADC.
- Switch to new set_rv etc gpio callbacks that were added in 6.15.
rohm,bd79703
- Add support for BD79700, BD79701 and BD79702 DACs that have subsets of
  functionality of the already supported bd79703.  Included making this
  driver suitable for support device variants.
st,stm32-lptimer
- Add support for stm32pm25 to this trigger.

Features
--------

Beyond IIO
- Property iterator for named children.
core
- Enable writes for 64 bit integers used for standard IIO ABI elements.
  Previously these could be read only.
- Helper library that should avoid code duplication for simpler ADC
  bindings that have a child node per channel.
- Enforce that IIO_DMA_MINALIGN is always at least 8 (almost always true
  and simplifies code on all significant architectures)
core/backend
- Add support to control source of data - useful when the HDL includes
  things like generated ramps for testing purposes. Enable this for
  adi-axi-dac
adi,ad3552-hs
- Add debugfs related callbacks to allow debug access to register contents.
adi,ad4000
- Support SPI offload with appropriate FPGA firmware along with improving
  documentation.
adi,ad7293
- Add support for external reference voltage.
adi,ad7606
- Support SPI offload.
adi,ad7768-1
- Support reset GPIO.
adi,admv8818
- Support filter frequencies beyond 2^32.
adi,adxl345
- Add single and double tap events.
hid-sensor-prox
- Support 16-bit report sizes as seen on some Intel platforms.
invensense,icm42600
- Enable use of named interrupts to avoid problems with some wiring choices.
  Get the interrupt by name, but fallback to previous assumption on the first
  being INT1 if no names are supplied.
microchip,mcp3911
- Add reset gpio support.
rohm,bh7150
- Add reset gpio support.
st,stm32
- Add support to control oversampling.
ti,adc128s052
- Add support for ROHM BD79104 which is early compatible with the TI
  parts already supported by this driver. Includes some general driver
  cleanup and a separate dt binding.
- Simplify reference voltage handling by assuming it is fixed after enabling
  the supply.
winsen,mhz19b
- New driver for this C02 sensor.

Cleanup and minor fixes
-----------------------

dt-bindings
- Correct indentation and style for DTS examples.
- Use unevalutateProperties for SPI devices instead of additionalProperties
  to allow generic SPI properties from spi-peripheral-props.yaml
ABI Docs
- Add missing docs for sampling_frequency when it applies only to events.
Treewide
- Various minor tweaks, comment fixes and similar.
- Sort TI ADCs in Kconfig that had gotten out of order.
- Switch various drives that provide GPIO chip functionality to the new
  callbacks with return values.
- Standardize on { } formatting for all array sentinels.
- Make use of aligned_s64 in a few places to replace either wrong types
  or manually defined equivalents.
- Drop places where spi bits_per_word is set to 8 because that is the
  default anyway.

adi,ad_sigma_delta library
- Avoid a potential use of uninitialized data if reg_size has a value
  that is not supported (no drivers hit this but it is reasonable hardening)
adi,ad4030
- Add error checking for scan types and no longer store it in state.
- Rework code to reduce duplication.
- Move setting the mode from buffer preenable() to update_scan_mode(),
  better matching expected semantics of the two different callbacks.
- Improve data marshalling comments.
adi,ad4695
- Use u16 for buffer elements as oversampling is not yet supported except
  with SPI offload (which doesn't use this path).
adi,ad5592r
- Clean up destruction of mutexes.
- Use lock guards to simplify code (later patch fixes a missed unlock)
adi,ad5933
- Correct some incorrect settling times.
adi,ad7091
- Deduplicate handling of writable vs volatile registers as they are the
  inverse of each other for this device.
adi,ad7124
- Fix 3db Filter frequency.
- Remove ability to directly write the filter frequency (which was broken)
- Register naming improvements.
adi,ad7606
- Add a missing return value check.
- Fill in max sampling rates for all chips.
- Use devm_mutex_init()
- Fix up some kernel-doc formatting issues.
- Remove some camel case that snuck in.
- Drop setting address field in channels as easily established from other
  fields.
- Drop unnecessary parameter to ad76060_scale_setup_cb_t.
adi,ad7768-1
- Convert to regmap.
- Factor out buffer allocation.
- Tidy up headers.
adi,ad7944
- Stop setting bits_per_word in SPI xfers with no data.
adi,ad9832
- Add of_device_id table rather than just relying on fallbacks.
- Use FIELD_PREP() to set values of fields.
adi,admv1013
- Cleanup a pointless ternary.
adi,admv8818
- Fix up LPF Band 5 frequency which was slightly wrong.
- Fix an integer overflow.
- Fix range calculation
adi,adt7316
- Replace irqd_get_trigger_type(irq_get_irq_data()) with simpler
  irq_get_trigger_type()
adi,adxl345
- Use regmap cache instead of various state variables that were there to
  reduce bus accesses.
- Make regmap return value checking consistent across all call sites.
adi,axi-dac
- Add a check on number of channels (0 to 15 valid)
allwinner,sun20i
- Use new adc-helpers to replace local parsing code for channel nodes.
bosch,bmp290
- Move to local variables for sensor data marshalling removing the need
  for a messy definition that has to work for all supported parts.
  Follow up fix adds a missing initialization.
dynaimage,al3010 and dynaimage,al3320a
- Various minor cleanup to bring these drivers inline with reviewed feedback
  given on a new driver.
- Fix an error path in which power down is not called when it should be.
- Switch to regmap.
google,cros_ec
- Fix up a flexible array in middle of structure warning.
- Flush fifo when changing the timeout to avoid potential long wait
  for samples.
hid-sensor-rotation
- Remove an __aligned(16) marking that doesn't seem to be justified.
kionix,kxcjk-1013
- Deduplicate code for setting up interrupts.
microchip,mcp3911
- Fix handling of conversion results register which differs across supported
  devices.
idt,zopt2201
- Avoid duplicating register lists as all volatile registers are the
  inverse of writeable registers on this device.
renesas,rzg2l
- Use new adc-helpers to replace local parsing code for channel nodes.
ti,ads1298
- Fix a missing Kconfig dependency.

* tag 'iio-for-6.16a-take2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (260 commits)
  dt-bindings: iio: adc: Add ROHM BD79100G
  iio: adc: add support for Nuvoton NCT7201
  dt-bindings: iio: adc: add NCT7201 ADCs
  iio: chemical: Add driver for SEN0322
  dt-bindings: trivial-devices: Document SEN0322
  iio: adc: ad7768-1: reorganize driver headers
  iio: bmp280: zero-init buffer
  iio: ssp_sensors: optimalize -> optimize
  HID: sensor-hub: Fix typo and improve documentation
  iio: admv1013: replace redundant ternary operator with just len
  iio: chemical: mhz19b: Fix error code in probe()
  iio: adc: at91-sama5d2: use IIO_DECLARE_BUFFER_WITH_TS
  iio: accel: sca3300: use IIO_DECLARE_BUFFER_WITH_TS
  iio: adc: ad7380: use IIO_DECLARE_DMA_BUFFER_WITH_TS
  iio: adc: ad4695: rename AD4695_MAX_VIN_CHANNELS
  iio: adc: ad4695: use IIO_DECLARE_DMA_BUFFER_WITH_TS
  iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros
  iio: make IIO_DMA_MINALIGN minimum of 8 bytes
  iio: pressure: zpa2326_spi: remove bits_per_word = 8
  iio: pressure: ms5611_spi: remove bits_per_word = 8
  ...
 2025-05-22 15:54:52 +02:00
Angelo Dureghello
921fece326 iio: dac: adi-axi-dac: fix bus read 
Fix bus read function.

Testing the driver, on a random basis, wrong reads was detected, mainly
by a wrong DAC chip ID read at first boot.
Before reading the expected value from the AXI regmap, need always to
wait for busy flag to be cleared.

Fixes: e61d717842 ("iio: dac: adi-axi-dac: extend features")
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250409-ad3552r-fix-bus-read-v2-1-34d3b21e8ca0@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-05-07 19:40:38 +01:00
David Lechner
70788d26ae iio: normalize array sentinel style 
Use `\t(\{ ?\},|\{\}|\{\s*/\*.*\*/\s*\},?)$` regex to find and replace
the array sentinel in all IIO drivers to the same style.

For some time, we've been trying to consistently use `{ }` (no trailing
comma, no comment, one space between braces) for array sentinels in the
IIO subsystem. Still nearly 50% of existing code uses a different style.
To save reviewers from having to request this trivial change as
frequently, let's normalize the style in all existing IIO drivers.
At least when code is copy/pasted to new drivers, the style will be
consistent.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20250411-iio-sentinel-normalization-v1-1-d293de3e3d93@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-04-22 19:10:04 +01:00
Angelo Dureghello
ca74d0eb06 iio: dac: adi-axi-dac: add data source get 
Add data source getter.

Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-4-fb429c3a6515@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-04-22 19:10:03 +01:00
Angelo Dureghello
029035636d iio: dac: adi-axi-dac: add cntrl chan check 
Add validity check on CNTRL_X channels (valid as 0 to 15).

Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-1-fb429c3a6515@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-04-22 19:10:03 +01:00
Angelo Dureghello
25331775b5 iio: dac: adi-axi-dac: add io_mode check 
Add safe check to the high bound of the enum values,

Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250219-wip-bl-axi-dac-add-enum-check-v1-1-8de9db0b3b1b@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-03-04 13:17:51 +00:00
David Lechner
4fe7fd17fe iio: buffer-dmaengine: split requesting DMA channel from allocating buffer 
Refactor the IIO dmaengine buffer code to split requesting the DMA
channel from allocating the buffer. We want to be able to add a new
function where the IIO device driver manages the DMA channel, so these
two actions need to be separate.

To do this, calling dma_request_chan() is moved from
iio_dmaengine_buffer_alloc() to iio_dmaengine_buffer_setup_ext(). A new
__iio_dmaengine_buffer_setup_ext() helper function is added to simplify
error unwinding and will also be used by a new function in a later
patch.

iio_dmaengine_buffer_free() now only frees the buffer and does not
release the DMA channel. A new iio_dmaengine_buffer_teardown() function
is added to unwind everything done in iio_dmaengine_buffer_setup_ext().
This keeps things more symmetrical with obvious pairs alloc/free and
setup/teardown.

Calling dma_get_slave_caps() in iio_dmaengine_buffer_alloc() is moved so
that we can avoid any gotos for error unwinding.

Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250207-dlech-mainline-spi-engine-offload-2-v8-8-e48a489be48c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-10 18:47:29 +00:00
Angelo Dureghello
8ab67b37b8 iio: dac: adi-axi-dac: add bus mode setup 
The ad354xr requires DSPI mode (2 data lanes) to work in buffering
mode, so, depending on the DAC type, target TRANSFER_REGISTER
"MULTI_IO_MODE" bitfield can be set between:
    SPI  (configuration, entire ad35xxr family),
    DSPI (ad354xr),
    QSPI (ad355xr).
Also bus IO_MODE must be set accordingly.

About removal of AXI_DAC_CUSTOM_CTRL_SYNCED_TRANSFER, according to
the HDL history the flag has never been used. So looks like the driver
was including it by mistake or in anticipation for something that was
never implemented on HDL side.

Current HDL updated documentation confirm it is actually not in use
anymore and replaced by the IO_MODE bits.

Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250114-wip-bl-ad3552r-axi-v0-iio-testing-carlos-v4-4-979402e33545@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-08 15:10:11 +00:00
Angelo Dureghello
6cc60bc38e iio: dac: adi-axi-dac: modify stream enable 
Change suggested from the AXI HDL team, modify the function
axi_dac_data_stream_enable() to check for interface busy, to avoid
possible issues when starting the stream.

Fixes: e61d717842 ("iio: dac: adi-axi-dac: extend features")
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250114-wip-bl-ad3552r-axi-v0-iio-testing-carlos-v4-3-979402e33545@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-03 19:15:38 +00:00
Peter Zijlstra
cdd30ebb1b module: Convert symbol namespace to string literal 
Clean up the existing export namespace code along the same lines of
commit 33def8498f ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") and for the same reason, it is not desired for the
namespace argument to be a macro expansion itself.

Scripted using

  git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file;
  do
    awk -i inplace '
      /^#define EXPORT_SYMBOL_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /^#define MODULE_IMPORT_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /MODULE_IMPORT_NS/ {
        $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g");
      }
      /EXPORT_SYMBOL_NS/ {
        if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) {
  	if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ &&
  	    $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ &&
  	    $0 !~ /^my/) {
  	  getline line;
  	  gsub(/[[:space:]]*\\$/, "");
  	  gsub(/[[:space:]]/, "", line);
  	  $0 = $0 " " line;
  	}

  	$0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/,
  		    "\\1(\\2, \"\\3\")", "g");
        }
      }
      { print }' $file;
  done

Requested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2024-12-02 11:34:44 -08:00
Angelo Dureghello
248da097f6 iio: dac: adi-axi-dac: add registering of child fdt node 
Change to obtain the fdt use case as reported in the
adi,ad3552r.yaml file in this patchset.

The DAC device is defined as a child node of the backend.
Registering the child fdt node as a platform devices.

Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-8-f6960b4f9719@kernel-space.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-11-03 20:33:42 +00:00
Angelo Dureghello
e61d717842 iio: dac: adi-axi-dac: extend features 
Extend AXI-DAC backend with new features required to interface
to the ad3552r DAC. Mainly, a new compatible string is added to
support the ad3552r-axi DAC IP, very similar to the generic DAC
IP but with some customizations to work with the ad3552r.

Then, a series of generic functions has been added to match with
ad3552r needs. Function names has been kept generic as much as
possible, to allow re-utilization from other frontend drivers.

Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-4-f6960b4f9719@kernel-space.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-11-01 14:54:48 +00:00
Angelo Dureghello
1a811e1be7 iio: dac: adi-axi-dac: update register names 
Non functional, readability change.

Update register names so that register bitfields can be more easily
linked to the register name.

Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20241008-wip-bl-ad3552r-axi-v0-iio-testing-v5-2-3d410944a63d@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-15 18:59:50 +01:00
Angelo Dureghello
70602f529e iio: dac: adi-axi-dac: fix wrong register bitfield 
Fix ADI_DAC_R1_MODE of AXI_DAC_REG_CNTRL_2.

Both generic DAC and ad3552r DAC IPs docs are reporting
bit 5 for it.

Link: https://wiki.analog.com/resources/fpga/docs/axi_dac_ip
Fixes: 4e3949a192 ("iio: dac: add support for AXI DAC IP core")
Cc: stable@vger.kernel.org
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20241008-wip-bl-ad3552r-axi-v0-iio-testing-v5-1-3d410944a63d@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-15 18:59:50 +01:00
Nuno Sa
24a9453c03 iio: dac: adi-axi-dac: support debugfs direct_reg_access 
Make it possible to read/write registers on the backend using the
debugfs interface for it.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240806-dev-backend-dac-direct-reg-access-v1-1-b84a6e8ee8a0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-10 11:17:33 +01:00
Nuno Sa
2256f37e24 iio: backend: introduce struct iio_backend_info 
Instead of only passing the backend ops when calling
devm_iio_backend_register(), pass an info like structure that will
contains the ops and additional information. Fow now, the backend name
is being added as that will be used by the debugFS interface introduced
in a later patch.

It also opens the door for further customizations passed by backends.

All users of devm_iio_backend_register() were updated accordingly.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-1-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-03 14:36:45 +01:00
David Lechner
2477d7b179 iio: backend: spelling: continuous -> continuous 
This fixes the spelling in IIO_BACKEND_INTERNAL_CONTINUOUS_WAVE.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240726-iio-backend-spelling-continuous-v1-1-467c6e3f78ff@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-03 10:13:41 +01:00
Trevor Gamblin
d9b329a971 iio: dac: adi-axi-dac: improve probe() error messaging 
The current error handling for calls such as devm_clk_get_enabled() in
the adi-axi-dac probe() function means that, if a property such as
'clocks' (for example) is not present in the devicetree when booting a
kernel with the driver enabled, the resulting error message will be
vague, e.g.:

|adi_axi_dac 44a00000.dac: probe with driver adi_axi_dac failed with error -2

Change the devm_clk_get_enabled(), devm_regmap_init_mmio(), and
devm_iio_backend_register() checks to use dev_err_probe() with some
context for easier debugging.

After the change:

|adi_axi_dac 44a00000.dac: error -ENOENT: failed to get clock
|adi_axi_dac 44a00000.dac: probe with driver adi_axi_dac failed with error -2

Suggested-by: Nuno Sa <nuno.sa@analog.com>
Tested-by: Angelo Dureghello <adureghello@baylibre.com>
Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Link: https://patch.msgid.link/20240617151820.3337034-1-tgamblin@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-06-25 21:04:48 +01:00
Dan Carpenter
73e49886a2 iio: dac: adi-axi: fix a mistake in axi_dac_ext_info_set() 
The last parameter of these axi_dac_(frequency|scale|phase)_set()
functions is supposed to be true for TONE_2 and false for TONE_1. The
bug is the last call where it passes "private - TONE_2".  That
subtraction is going to be zero/false for TONE_2 and and -1/true for
TONE_1.  Fix the bug, and re-write it as "private == TONE_2" so it's
more obvious what is happening.

Fixes: 4e3949a192 ("iio: dac: add support for AXI DAC IP core")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/df7c6e1b-b619-40c3-9881-838587ed15d4@moroto.mountain
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-04-29 20:53:25 +01:00
Nuno Sa
4e3949a192 iio: dac: add support for AXI DAC IP core 
Support the Analog Devices Generic AXI DAC IP core. The IP core is used
for interfacing with digital-to-analog (DAC) converters that require either
a high-speed serial interface (JESD204B/C) or a source synchronous parallel
interface (LVDS/CMOS). Typically (for such devices) SPI will be used for
configuration only, while this IP core handles the streaming of data into
memory via DMA.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240419-iio-backend-axi-dac-v4-9-5ca45b4de294@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-04-20 15:41:32 +01:00