kernel/linux.git/drivers/staging/iio, branch master

staging: iio: ad9834: use sysfs_emit() and simplify show functions

2026-03-21T13:16:07+00:00

Replace sprintf() with sysfs_emit() in sysfs attribute show functions. sysfs_emit() is the preferred API for sysfs callbacks as it is aware of the PAGE_SIZE buffer limit. Also simplify the wavetype_available show functions by removing the intermediate string variable and returning directly from each branch. Signed-off-by: Gabriel Rondon Signed-off-by: Jonathan Cameron

staging: iio: ad5933: use sysfs_emit() in show functions

2026-03-21T13:10:14+00:00

Replace sprintf() with sysfs_emit() in all sysfs attribute show functions. sysfs_emit() is the preferred API for sysfs callbacks as it is aware of the PAGE_SIZE buffer limit. Also remove the unnecessary (int) cast in ad5933_show_frequency() and use the correct format specifier %llu for the unsigned long long freqreg variable. Signed-off-by: Gabriel Rondon Signed-off-by: Jonathan Cameron

staging: iio: ad7816: Replace sprintf() with sysfs_emit()

2026-03-02T21:01:23+00:00

As stated in Documentation/filesystems/sysfs.rst: 'New implementations of show() methods should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space.' Replace sprintf with sysfs_emit in the following sysfs show functions: - ad7816_show_mode() - ad7816_show_available_modes() - ad7816_show_channel() - ad7816_show_value() - ad7816_show_oti() Signed-off-by: Bruno Martins Signed-off-by: Jonathan Cameron

staging: iio: impedance-analyzer: ad5933: use div64_ul() instead of do_div()

2026-02-23T20:44:19+00:00

Replace do_div() with div64_ul() since the remainder is not used. div64_ul() is the preferred API for 64-bit by 32-bit division when only the quotient is needed. Also replace explicit casting and shifting with the BIT_ULL(27) macro for clarity. Note: A mathematical simplification to `(freq * BIT_ULL(29)) / mclk` was suggested during review to improve precision. However, as confirmed by maintainers, the original driver's truncation via `(mclk / 4)` might be intentional or relied upon by userspace. Since hardware is not available for verification, this patch preserves the original logic to avoid regression risk in the absence of testing. Issue identified by coccicheck using do_div.cocci. Signed-off-by: Archit Anant Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

staging: iio: adt7316: modernize power management

2026-01-11T13:00:22+00:00

Replaced use of deprecated function SIMPLE_DEV_PM_OPS() with EXPORT_GPL_SIMPLE_DEV_PM_OPS(). Removed PM preprocessor conditions with usage of pm_sleep_ptr(). Signed-off-by: Michael Harris Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

staging: iio: ad9832: clean up whitespace

2025-12-21T19:18:20+00:00

Remove unnecessary blank lines between comment sections to improve readability. Signed-off-by: Tomas Borquez Signed-off-by: Jonathan Cameron

staging: iio: ad9832: remove platform_data support

2025-12-21T11:10:26+00:00

Remove legacy platform_data support as there are no in tree users and this approach belongs to a long gone era. The policy decision on what to output is a userspace problem, not something that should be provided from firmware. The driver now initializes the device to a safe state (SLEEP|RESET|CLR) outputting nothing. Userspace can configure the desired frequencies and phases via the existing sysfs attributes once the device is ready to be used. Original discussion started here [1]. Link: https://lore.kernel.org/linux-iio/20250628161040.3d21e2c4@jic23-huawei/ #[1] Suggested-by: Jonathan Cameron Signed-off-by: Tomas Borquez Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

staging: iio: adt7316: replace sprintf() with sysfs_emit()

2025-11-16T15:25:08+00:00

Convert several sprintf() calls to sysfs_emit() in the sysfs show functions, as it is the preferred helper and prevents potential buffer overruns. No functional changes intended. Signed-off-by: Shi Hao Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

staging: iio: ad9834: remove empty ad9834.h file

2025-10-19T10:59:18+00:00

Remove drivers/staging/iio/frequency/ad9834.h header file because it contains nothing except the include guards. Signed-off-by: Taimoor Zaeem Signed-off-by: Jonathan Cameron

staging: iio: adc: ad7816: Drop unnecessary dev_set_drvdata() call

2025-08-25T08:24:19+00:00

Remove the call to `dev_set_drvdata()` and the associated comment since private data is never read. Signed-off-by: Salah Triki Reviewed-by: David Lechner Link: https://patch.msgid.link/aKSRpTuwA0P-ZaUS@pc Signed-off-by: Jonathan Cameron