kernel/linux.git/drivers/iio/frequency, branch v7.0-rc7

iio: frequency: adf4377: Fix duplicated soft reset mask

2026-02-23T08:24:37+00:00

The regmap_read_poll_timeout() uses ADF4377_0000_SOFT_RESET_R_MSK twice instead of checking both SOFT_RESET_MSK (bit 0) and SOFT_RESET_R_MSK (bit 7). This causes an incomplete reset status check. The code first sets both SOFT_RESET and SOFT_RESET_R bits to 1 via regmap_update_bits(), then polls for them to be cleared. Since we set both bits before polling, we should be waiting for both to clear. Fix by using both masks as done in regmap_update_bits() above. Fixes: eda549e2e524 ("iio: frequency: adf4377: add support for ADF4377") Signed-off-by: SeungJu Cheon Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron

iio: frequency: adf4377: add clk provider support

2025-12-21T11:41:12+00:00

Add clk provider feature for the adf4377. Even though the driver was sent as an IIO driver in most cases the device is actually seen as a clock provider. This patch aims to cover actual usecases requested by users in order to completely control the output frequencies from userspace. Reviewed-by: Andy Shevchenko Signed-off-by: Antoniu Miclaus Signed-off-by: Jonathan Cameron

Merge tag 'iio-for-6.18a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

2025-09-23T12:15:25+00:00

Jonathan writes: IIO: New device support, features and cleanup for 6.18 New device support ================== ad,ade9000 - New driver for this complex energy and power monitoring ADC. infineon,tlv493d - New driver for this 3D magnetic sensor. intel,dollar - New driver for this TI PMIC (part number unknown) marvel,88pm886 - Driver for this PMIC ADC. microchip,mcp9600 - Add explicit support for the mcp9601 which has some additional features over the mcp9600. rohm,bd79112 - New driver for this ADC / GPIO Chip. Features ======== Core - New helper to multiply data expressed in IIO types. - Add KUnit tests. - New IIO_ALTCURRENT type, similar to existing IIO_ALTVOLTAGE - Add some channel modifiers related to energy and power, such as reactive. adi,ad7124 - Support external clocks sources and output of the internal clocks. - Filter control. adi,ad7173 - Add filter support. Some fiddly interactions with other parameters on this device. adi,ad7779 - Add backend support which required control of the number of lanes used. liteon,ltr390 - Add runtime PM support. microchip,mcp9600 - Add support for different thermocouple types. Cleanup and minor fixes ======================= core - Switch info_mask fields to be unsigned. Not clear why they were ever signed. - Fix handling of negative channel scale in iio_convert_raw_to_processed() - Fix offset handling for channels without a scale attribute. - Improve the precision of scaling slightly. - Drop apparent handling of IIO_CHAN_INFO_PROCESSED for devices that don't have any such channels. various - Drop many pm_runtime_mark_last_busy() calls now pm_runtime_put_autosuspend() calls it internally. - Drop dev_err_probe() calls where the error code is hard coded as -ENOMEM as they don't do anything. - Drop dev_err() calls where the error code is -ENOMEM. This will reduce error prints, but memory failures generate a lot of messages anyway so unlikely we need these prints. current-sense-amplifier - Add #io-channels property this channel to be used by a consumer driver. adi,ad7124 - Fix incorrect clocks dt-binding property. - Make the mclk clock optional in DT - this is internal to the ADC so should never have been in he binding. - Fix up sample rate to comply with ABI. - Use read_avail() callback rather than opencoding similar. - Deploy guard() to clean up some lock handling. adi,ad7768 - Use devm_regulator_get_enable_read_voltage() to replace similar code. adi,ad7816 - Drop an unnecessary dev_set_drvdata() call as nothing uses the data. ad,adxl345 - Fix missing blank line before bullet list in documentation. arm,scmi - Use devm_kcalloc() for an array allocation rather than devm_kzalloc(). bosch,bmi270 - Match an ACPI ID seen in the wild. It is not spec compliant but we can't do much about that. bosch,bmp280 - Drop overly noisy dev_info() - Allow for sleeping gpio controllers. gogle,cros-ec - Drop unused location attribute that has been replaced by label. invense,icm42600 - Simplify the power management. - Use guard() to simplify some locking. maxim,max1238 - Add io-channel-cells property to dt-binding as there is an in tree consumer. microchip,mcp9600 - Specify a default value in dt-binding for the thermocouple type - General whitespace cleanup. samsung,exynos - Drop support for the S3C2410 including bindings, and touchscreen support as nothing else uses that. - Drop platform ID based binding as not used. st,vl53l0x - Fix returning the wrong variable in an error path. ti,pac1934 - Replace open coded devm_mutex_init(). xilinx,ams - Update maintainers entry. * tag 'iio-for-6.18a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (178 commits) MAINTAINERS: Support ROHM BD79112 ADC iio: adc: Support ROHM BD79112 ADC/GPIO dt-bindings: iio: adc: ROHM BD79112 ADC/GPIO iio: pressure: bmp280: Use gpiod_set_value_cansleep() iio: pressure: bmp280: Remove noisy dev_info() iio: ABI: add filter types for ad7173 iio: adc: ad7173: support changing filter type iio: adc: ad7173: rename odr field iio: adc: ad7173: rename ad7173_chan_spec_ext_info iio: adc: Add driver for Marvell 88PM886 PMIC ADC dt-bindings: mfd: 88pm886: Add #io-channel-cells iio: ABI: document "sinc4+rej60" filter_type iio: adc: ad7124: add filter support iio: adc: ad7124: support fractional sampling_frequency iio: adc: ad7124: use guard(mutex) to simplify return paths iio: adc: ad7124: use read_avail() for scale_available iio: adc: ad7124: use clamp() iio: adc: ad7124: fix sample rate for multi-channel use Documentation: ABI: iio: add sinc4+lp docs: iio: add documentation for ade9000 driver ...

iio: frequency: adf4350: Fix prescaler usage.

2025-08-31T15:46:24+00:00

The ADF4350/1 features a programmable dual-modulus prescaler of 4/5 or 8/9. When set to 4/5, the maximum RF frequency allowed is 3 GHz. Therefore, when operating the ADF4351 above 3 GHz, this must be set to 8/9. In this context not the RF output frequency is meant - it's the VCO frequency. Therefore move the prescaler selection after we derived the VCO frequency from the desired RF output frequency. This BUG may have caused PLL lock instabilities when operating the VCO at the very high range close to 4.4 GHz. Fixes: e31166f0fd48 ("iio: frequency: New driver for Analog Devices ADF4350/ADF4351 Wideband Synthesizers") Signed-off-by: Michael Hennerich Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250829-adf4350-fix-v2-1-0bf543ba797d@analog.com Cc: Signed-off-by: Jonathan Cameron

iio: Remove error prints for devm_add_action_or_reset()

2025-08-16T10:57:08+00:00

When `devm_add_action_or_reset()` fails, it is due to a failed memory allocation and will thus return `-ENOMEM`. `dev_err_probe()` doesn't do anything when error is `-ENOMEM`. Therefore, remove the useless call to `dev_err_probe()` when `devm_add_action_or_reset()` fails, and just return the value instead. Signed-off-by: Waqar Hameed Reviewed-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/pndectqm7te.a.out@axis.com Signed-off-by: Jonathan Cameron

iio: admv1013: replace redundant ternary operator with just len

2025-05-21T13:21:34+00:00

The variable ret is being assigned a return value and non-zero error return paths are taken at all stages. At the end of the function ret is always zero, so the ternary operator checking for zero ret is redundant and can be replaced with just len instead. Signed-off-by: Colin Ian King Reviewed-by: David Lechner Link: https://patch.msgid.link/20250507134502.254736-1-colin.i.king@gmail.com Signed-off-by: Jonathan Cameron

iio: normalize array sentinel style

2025-04-22T18:10:04+00:00

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 Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250411-iio-sentinel-normalization-v1-1-d293de3e3d93@baylibre.com Signed-off-by: Jonathan Cameron

iio: frequency: adf4371: add ref doubler

2025-02-08T15:16:29+00:00

Add support for the reference doubler. Reviewed-by: Nuno Sa Signed-off-by: Antoniu Miclaus Link: https://patch.msgid.link/20250127101026.5320-4-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron

iio: frequency: adf4371: add refin mode

2025-02-08T15:16:29+00:00

Add support for single-ended/differential reference input mode. Reviewed-by: Nuno Sa Signed-off-by: Antoniu Miclaus Link: https://patch.msgid.link/20250127101026.5320-3-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron

Merge 6.12-rc4 into char-misc-next

2024-10-21T06:42:22+00:00

We need the iio fixes from 6.12-rc4 in here as well. Signed-off-by: Greg Kroah-Hartman