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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>
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The new devm_iio_adc_device_alloc_chaninfo_se() -helper is intended to
help drivers avoid open-coding the for_each_node -loop for getting the
channel IDs. The helper provides standard way to detect the ADC channel
nodes (by the node name), and a standard way to convert the "reg"
-properties to channel identification numbers, used in the struct
iio_chan_spec. Furthermore, the helper can optionally check the found
channel IDs are smaller than given maximum. This is useful for callers
which later use the IDs for example for indexing a channel data array.
The original driver treated all found child nodes as channel nodes. The
new helper requires channel nodes to be named channel[@N]. This should
help avoid problems with devices which may contain also other but ADC
child nodes. Quick grep from arch/* with the sun20i-gpadc's compatible
string didn't reveal any in-tree .dts with channel nodes named
otherwise. Also, same grep shows all the in-tree .dts seem to have
channel IDs between 0..num of channels.
Use the new helper.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/e367a803c0d625e60c9fca16c55a25eee06b5a89.1742560649.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Switch to device_for_each_child_node_scoped() to simplify the code by
removing the need for calls to fwnode_handle_put() in the error path.
This prevents possible memory leaks if new error paths are added without
the required call to fwnode_handle_put().
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Link: https://patch.msgid.link/20240926-iio_device_for_each_child_node_scoped-v1-3-64ca8a424578@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The General Purpose ADC (GPADC) can convert the external signal into
a certain proportion of digital value, to realize the measurement of
analog signal, which can be applied to power detection and key detection.
Theoretically, this ADC can support up to 16 channels. All SoCs below
contain this GPADC IP. The only difference between them is the number
of available channels:
T113 - 1 channel
D1 - 2 channels
R329 - 4 channels
T507 - 4 channels
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com>
Link: https://lore.kernel.org/r/20230619154252.3951913-3-bigunclemax@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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