kernel/linux.git/drivers/iio/frequency, branch v7.2-rc1

iio: frequency: adrf6780: replace usleep_range() with fsleep()

2026-05-31T09:59:38+00:00

The ADRF6780 datasheet (Rev. D, page 23, ADC section) says: "Wait approximately 200 us for the ADC to be ready." fsleep(200) expands to the same usleep_range(200, 250). Use the flexible sleep helper, which picks the right primitive for the given microsecond delay. Replace the generic "Recommended delay for the ADC to be ready" comment with the datasheet reference so the "why" of the wait is visible at the call site. No functional change. Signed-off-by: Stepan Ionichev Reviewed-by: Andy Shevchenko Reviewed-by: Joshua Crofts Signed-off-by: Jonathan Cameron

iio: frequency: adf4350: replace TODO with NOTE in adf4350_set_freq()

2026-03-25T20:20:16+00:00

Replace the TODO comment in adf4350_set_freq() with a NOTE explaining that a constant-time approach using fls_long() was attempted but deemed more complex without meaningful benefit for initialization code. Signed-off-by: Neel Bullywon Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

Merge tag 'v7.0-rc4' into togreg

2026-03-22T12:20:42+00:00

Linux 7.0-rc4 Required for the ds4422 series which is build upon; 5187e03b817c ("iio: dac: ds4424: reject -128 RAW value")

iio: frequency: ad9523: use dev_err_probe

2026-03-21T21:12:24+00:00

Use dev_err_probe() instead of dev_err() in the probe path to ensure proper handling of deferred probing and to simplify error handling. Signed-off-by: Antoniu Miclaus Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

iio: frequency: ad9523: add dev variable

2026-03-21T21:12:24+00:00

Introduce a local struct device variable in ad9523_probe() to simplify subsequent conversions and improve code readability. Split pdata declaration and assignment since the result is validated immediately after. No functional change. Signed-off-by: Antoniu Miclaus Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

iio: frequency: admv4420: use dev_err_probe

2026-03-21T21:12:24+00:00

Use dev_err_probe() instead of dev_err() in the probe path to ensure proper handling of deferred probing and to simplify error handling. Also fix the format specifier for vco_freq_hz from %lld to %llu since it is u64 (unsigned), and add missing newline to the error message. Reviewed-by: Andy Shevchenko Signed-off-by: Antoniu Miclaus Signed-off-by: Jonathan Cameron

iio: frequency: admv4420: add dev variable

2026-03-21T21:12:23+00:00

Introduce a local struct device variable in admv4420_probe() to simplify subsequent conversions and improve code readability. No functional change. Reviewed-by: Andy Shevchenko Signed-off-by: Antoniu Miclaus Signed-off-by: Jonathan Cameron

iio: frequency: admv1013: fix NULL pointer dereference on str

2026-03-14T12:10:21+00:00

When device_property_read_string() fails, str is left uninitialized but the code falls through to strcmp(str, ...), dereferencing a garbage pointer. Replace manual read/strcmp with device_property_match_property_string() and consolidate the SE mode enums into a single sequential enum, mapping to hardware register values via a switch consistent with other bitfields in the driver. Several cleanup patches have been applied to this driver recently so this will need a manual backport. Fixes: da35a7b526d9 ("iio: frequency: admv1013: add support for ADMV1013") Reviewed-by: Nuno Sá Signed-off-by: Antoniu Miclaus Reviewed-by: Andy Shevchenko Cc: Signed-off-by: Jonathan Cameron

iio: frequency: admv4420: return proper error code from admv4420_calc_parameters()

2026-03-03T21:18:24+00:00

Return -EINVAL instead of -1 when no valid PLL parameters solution is found. Using standard kernel error codes ensures consistency and proper error propagation through the call chain. Signed-off-by: Antoniu Miclaus Signed-off-by: Jonathan Cameron

iio: frequency: ad9523: use octal permissions

2026-02-28T12:15:19+00:00

The driver currently defines device attributes using symbolic permission flags (S_IRUGO and S_IWUSR). Update these to use octal permissions (0444 and 0200) to resolve checkpatch warnings. Signed-off-by: Bhargav Joshi Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron