kernel/git/stable/linux.git/drivers/iio/adc, branch master

Replace by more specific (c files)

2026-07-03T05:38:17+00:00

Replace the #include of by the more specific where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich Acked-by: Takashi Sakamoto Acked-by: Bjorn Helgaas Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub)

Merge tag 'char-misc-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2026-06-22T19:20:21+00:00

Pull misc driver updates from Greg KH: "Here is the big set of char, misc, iio, fpga, and other small driver subsystems changes for 7.2-rc1. Lots of little stuff in here, the majority being of course the IIO driver updates, as a list they are: - IIO driver updates and additions - GPIB driver bugfixes and cleanups - Android binder driver updates (rust and C version) - counter driver updates - MHI driver updates - mei driver updates - w1 driver updates - interconnect driver updates - Comedi driver fixes and updates - some obsolete char drivers removed (applicom and dtlk) - hwtracing driver updates - other tiny driver updates All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (406 commits) w1: ds2482: Use named initializers for arrays of i2c_device_data firmware: stratix10-svc: Add support to query Arm Trusted Firmware (ATF) version firmware: stratix10-rsu: avoid blocking reboot_image sysfs when busy coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer() iio: adc: nxp-sar-adc: harden buffer ISR against per-channel read failure iio: chemical: scd30: Replace manual locking with RAII locking iio: light: tsl2591: remove unneeded tsl2591_compatible_als_persist_cycle() iio: dac: ad5686: create bus ops struct iio: dac: ad5686: cleanup doc header of local structs iio: dac: ad5686: add control_sync() for single-channel devices iio: dac: ad5686: add helpers to handle powerdown masks iio: dac: ad5686: add of_match table to the spi driver iio: dac: ad5686: drop enum id iio: dac: ad5686: remove redundant register definition iio: dac: ad5686: refactor include headers iio: adc: ad4080: fix AD4880 chip ID iio: light: veml3328: add support for new device dt-bindings: iio: light: veml6030: add veml3328 fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header() fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() ...

Merge tag 'bitmap-for-7.2' of https://github.com/norov/linux

2026-06-17T10:38:38+00:00

Pull bitmap updates from Yury Norov: "This includes the new FIELD_GET_SIGNED() helper, bitmap_print_to_pagebuf() removal, RISCV/bitrev support, and a couple cleanups. - new handy helper FIELD_GET_SIGNED() (Yury) - arch test_and_set_bit_lock() and clear_bit_unlock() cleanup (Randy) - __bf_shf() simplification (Yury) - bitmap_print_to_pagebuf() removal (Yury) - RISCV/bitrev conditional support (Jindie, Yury)" * tag 'bitmap-for-7.2' of https://github.com/norov/linux: MAINTAINERS: BITOPS: include bitrev.[ch] arch/riscv: Add bitrev.h file to support rev8 and brev8 bitops: Define generic___bitrev8/16/32 for reuse lib/bitrev: Introduce GENERIC_BITREVERSE arch: select HAVE_ARCH_BITREVERSE conditionally on BITREVERSE bitmap: fix find helper documentation bitmap: drop bitmap_print_to_pagebuf() cpumask: switch cpumap_print_to_pagebuf() to using scnprintf() bitfield: wire __bf_shf to __builtin_ctzll bitops: use common function parameter names ptp: switch to using FIELD_GET_SIGNED() rtc: rv3032: switch to using FIELD_GET_SIGNED() wifi: rtw89: switch to using FIELD_GET_SIGNED() iio: mcp9600: switch to using FIELD_GET_SIGNED() iio: pressure: bmp280: switch to using FIELD_GET_SIGNED() iio: magnetometer: yas530: switch to using FIELD_GET_SIGNED() iio: intel_dc_ti_adc: switch to using FIELD_GET_SIGNED() x86/extable: switch to using FIELD_GET_SIGNED() bitfield: add FIELD_GET_SIGNED()

Merge tag 'iio-fixes-for-7.1b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

2026-06-14T05:56:59+00:00

IIO: 2nd set of fixes for the 7.1 cycle. Usual mixed bag of ancient issues and the recently introduced. Various drivers - Ensure use of simple_write_to_buffer() in debugfs callbacks doesn't result in reading off the end of intended data by checking the position is always 0. buffer/hw-consumer - Ensure scan_mask is freed on buffer release. acpi-als - Check ACPI_COMPANION() against NULL to close corner case where a driver is overridden. adi,ad4062 - Add GPIOLIB dependency to avoid undefined ref to gpiochip_get_data() adi.ad7768-1 - Add GPIOLIB dependency to avoid several undefined functions. adi,ad2s1210 - Ensure possible recovery path if a read fails in the interrupt handler. bosch,bmg160 - Increase sleep on startup to ensure device is ready. bosch,bmp280 - Ensure buffer pushed to kfifo is zeroed to avoid leaking uninitialized stack data to userspace. dyna-image,al3010 - Fix refactor that stopped reading one of the two measurement registers. dyna-image,al3320a - Fix refactor that stopped reading one of the two measurement registers. qcom,spmi-iadc - Ensure disable_irq_wake() is called on remove path. sensiron,scd30 - Fix a sign extension bug. st,vl5310x - Ensure possible recovery path if a read fails in the interrupt handler. ti,adc1298 - Bounds check for pga_settings index. Hardening against device returning unexpected values. ti,tmp006 - Ensure trigger correctly released on remove path. vishay,veml6030 - Fix incorrect channel type in events. vishay,veml6074 - Bounds check for veml6075_it_ms. Hardening against device returning unexpected values. * tag 'iio-fixes-for-7.1b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (23 commits) iio: adc: ad_sigma_delta: fix clear_pending_event for registerless devices iio: adc: ad_sigma_delta: fix CS held asserted and state leaks iio: light: opt3001: fix missing state reset on timeout iio: chemical: scd30: Cleanup initializations and fix sign-extension bug iio: core: fix uninitialized data in debugfs iio: backend: fix uninitialized data in debugfs iio: dac: ad3552r-hs: fix uninitialized data ni ad3552r_hs_write_data_source() iio: adc: qcom-spmi-iadc: balance enable_irq_wake() on driver unbind iio: light: al3320a: read both ALS ADC registers again iio: light: al3010: read both ALS ADC registers again iio: temperature: tmp006: use devm_iio_trigger_register iio: buffer: hw-consumer: free scan_mask on buffer release iio: adc: ad7768-1: Select GPIOLIB iio: light: veml6030: fix channel type when pushing events iio: light: acpi-als: Check ACPI_COMPANION() against NULL iio: resolver: ad2s1210: notify trigger and clear state on fault read error iio: proximity: vl53l0x: notify trigger and clear IRQ on error paths iio: gyro: bmg160: wait full startup time after mode change at probe iio: gyro: bmg160: bail out when bandwidth/filter is not in table iio: pressure: bmp280: zero-init bmp580 trigger handler buffer ...

iio: adc: nxp-sar-adc: harden buffer ISR against per-channel read failure

2026-06-03T17:29:09+00:00

nxp_sar_adc_isr_buffer() bails on the first channel-read failure without calling iio_trigger_notify_done(), so the trigger use_count is left incremented and iio_trigger_poll_chained() drops subsequent dispatches until the device is rebound. Reaching this path means a state machine has gone wrong (driver bug or the SAR ADC in an unexpected state) rather than a transient bus issue, so this is hardening rather than a bug fix. If the underlying condition persists the device is wedged and needs an unbind anyway. Call iio_trigger_notify_done() on the error exit too, matching the success path. The nxp_sar_adc_read_notify() duplication is intentional and avoids a goto label for a two-line bail-out, as suggested by David. Signed-off-by: Stepan Ionichev Signed-off-by: Jonathan Cameron

Merge tag 'v7.1-rc6' into work

2026-06-02T14:24:19+00:00

Linux 7.1-rc6

iio: adc: ad4080: fix AD4880 chip ID

2026-06-02T14:23:05+00:00

The AD4880 chip ID was incorrectly set to 0x0750. According to the datasheet, the product ID registers read 0x00 (PRODUCT_ID_H) and 0x59 (PRODUCT_ID_L), giving a combined chip ID of 0x0059. Fix the value to match the actual hardware. Signed-off-by: Antoniu Miclaus Reviewed-by: Joshua Crofts Signed-off-by: Jonathan Cameron

iio: adc: ad4691: add oversampling support

2026-05-31T10:14:05+00:00

Add oversampling ratio (OSR) support for CNV burst mode. The accumulator depth register (ACC_DEPTH_IN(0)) is programmed with the selected OSR at buffer enable time and before each single-shot read. Supported OSR values: 1, 2, 4, 8, 16, 32. Introduce AD4691_MANUAL_CHANNEL() for manual mode channels, which do not expose the oversampling_ratio attribute since OSR is not applicable in that mode. A separate manual_channels array is added to struct ad4691_channel_info and selected at probe time. The OSR is shared across all channels (in_voltage_sampling_frequency and in_voltage_oversampling_ratio are info_mask_shared_by_all) because the chip has one internal oscillator and a single accumulator depth register (ACC_DEPTH_IN(0)) for all channels. in_voltage_sampling_frequency represents the effective output rate, defined as osc_freq / osr. Writing it computes needed_osc = freq * osr and snaps down to the largest oscillator table entry that satisfies both osc <= needed_osc and osc % osr == 0, guaranteeing an exact integer read-back. The result is stored in target_osc_freq_Hz and written to OSC_FREQ_REG at buffer enable and single-shot time, so sampling_frequency and oversampling_ratio can be set in any order. in_voltage_sampling_frequency_available is precomputed at probe for each OSR value, listing only oscillator table entries that divide evenly by that OSR, expressed as effective rates (osc_freq / osr). The list becomes sparser as OSR increases, capping at max_rate / osr. read_avail picks the precomputed list for the current OSR, making the returned pointer stable and race-free. Writing oversampling_ratio stores the new shared OSR and snaps target_osc_freq_Hz to the largest oscillator table entry that is both <= old_effective_rate * new_osr and evenly divisible by new_osr. This preserves an integer read-back of in_voltage_sampling_frequency after the OSR change while keeping the oscillator as close as possible to the previous effective rate. OSR defaults to 1 (no accumulation). Signed-off-by: Radu Sabau Signed-off-by: Jonathan Cameron

iio: adc: ad4691: add SPI offload support

2026-05-31T10:13:29+00:00

Add SPI offload support to enable DMA-based, CPU-independent data acquisition using the SPI Engine offload framework. When an SPI offload is available (devm_spi_offload_get() succeeds), the driver registers a DMA engine IIO buffer and uses dedicated buffer setup operations. If no offload is available the existing software triggered buffer path is used unchanged. Both CNV Burst Mode and Manual Mode support offload, but use different trigger mechanisms: CNV Burst Mode: the SPI Engine is triggered by the ADC's DATA_READY signal on the GP pin specified by the trigger-source consumer reference in the device tree (one cell = GP pin number 0-3). For this mode the driver acts as both an SPI offload consumer (DMA RX stream, message optimization) and a trigger source provider: it registers the GP/DATA_READY output via devm_spi_offload_trigger_register() so the offload framework can match the '#trigger-source-cells' phandle and automatically fire the SPI Engine DMA transfer at end-of-conversion. Manual Mode: the SPI Engine is triggered by a periodic trigger at the configured sampling frequency. The pre-built SPI message uses the pipelined CNV-on-CS protocol: N+1 16-bit transfers are issued for N active channels (the first result is discarded as garbage from the pipeline flush) and the remaining N results are captured by DMA. All offload transfers use 16-bit frames (bits_per_word=16, len=2). The SPI Engine assembles received bits into native 16-bit words before DMA, so offload samples land in CPU-native byte order (IIO_CPU). Dedicated channel arrays (AD4691_OFFLOAD_CHANNEL) reflect this: they omit IIO_BE and carry no soft timestamp (DMA delivers data directly to userspace). The software triggered-buffer path retains its IIO_BE channels because bits_per_word=8 causes SPI to deliver bytes MSB-first into memory, making the on-disk layout big-endian. Both paths use storagebits=16 as transfers are 16 bits wide in both cases. IIO_BUFFER_DMAENGINE is selected because the offload path uses devm_iio_dmaengine_buffer_setup_with_handle() to allocate and attach the DMA RX buffer to the IIO device. Signed-off-by: Radu Sabau Signed-off-by: Jonathan Cameron

iio: adc: ad4691: add triggered buffer support

2026-05-31T10:13:12+00:00

Add buffered capture support using the IIO triggered buffer framework. CNV Burst Mode: the GP pin identified by interrupt-names in the device tree is configured as DATA_READY output. The IRQ handler stops conversions and fires the IIO trigger; the trigger handler executes a pre-built SPI message that reads all active channels from the AVG_IN accumulator registers and then resets accumulator state and restarts conversions for the next cycle. Manual Mode: CNV is tied to SPI CS so each transfer simultaneously reads the previous result and starts the next conversion (pipelined N+1 scheme). At preenable time a pre-built, optimised SPI message of N+1 transfers is constructed (N channel reads plus one NOOP to drain the pipeline). The trigger handler executes the message in a single spi_sync() call and collects the results. An external trigger (e.g. iio-trig-hrtimer) is required to drive the trigger at the desired sample rate. Both modes share the same trigger handler and push a complete scan — one big-endian 16-bit (__be16) slot per active channel, densely packed in scan_index order, followed by a timestamp. The CNV Burst Mode sampling frequency (PWM period) is exposed as a buffer-level attribute via IIO_DEVICE_ATTR. Signed-off-by: Radu Sabau Signed-off-by: Jonathan Cameron