kernel/linux.git/drivers/iio/multiplexer, branch v6.19.11

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: iio-mux: kzalloc instead of devm_kzalloc to ensure page alignment

2025-01-04T14:48:17+00:00

During channel configuration, the iio-mux driver allocates a page with devm_kzalloc(PAGE_SIZE) to read channel ext_info. However, the resulting buffer points to an offset of the page due to the devres header sitting at the beginning of the allocated area. This leads to failure in the provider driver when sysfs_emit* helpers are used to format the ext_info attributes. Switch to plain kzalloc version. The devres version is not strictly necessary as the buffer is only accessed during the channel configuration phase. Rely on __free cleanup to deallocate the buffer. Also, move the ext_info handling into a new function to have the page buffer definition and assignment in one statement as suggested by cleanup documentation. Signed-off-by: Matteo Martelli Fixes: 7ba9df54b091 ("iio: multiplexer: new iio category and iio-mux driver") Reviewed-by: David Lechner Link: https://patch.msgid.link/20241202-iio-kmalloc-align-v1-2-aa9568c03937@gmail.com Signed-off-by: Jonathan Cameron

iio: multiplexer: Remove an unused field in struct mux

2024-05-27T08:48:56+00:00

In "struct mux", the 'indio_dev' field is unused. Remove it. Found with cppcheck, unusedStructMember. Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/7bb04abdc2815caf090a6c9ecab2a51d837792a7.1714556499.git.christophe.jaillet@wanadoo.fr Signed-off-by: Jonathan Cameron

iio: multiplexer: Switch to use dev_err_probe() helper

2022-11-23T19:43:57+00:00

In the probe path, dev_err() can be replaced with dev_err_probe() which will check if error code is -EPROBE_DEFER and prints the error name. It also sets the defer probe reason which can be checked later through debugfs. It's more simple in error path. Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20220927064841.319291-1-yangyingliang@huawei.com Signed-off-by: Jonathan Cameron

iio: multiplexer: Make use of device properties

2022-04-04T08:11:24+00:00

Convert the module to be property provider agnostic and allow it to be used on non-OF platforms. Signed-off-by: Andy Shevchenko Acked-by: Peter Rosin Link: https://lore.kernel.org/r/20220302160025.54348-1-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron

iio: multiplexer: iio-mux: Support settle-time-us property

2021-10-21T19:02:54+00:00

If the devicetree specifies that the hardware requires a settle time, pass this time on to the mux APIs. Signed-off-by: Vincent Whitchurch Reviewed-by: Lars-Peter Clausen Tested-by: Lars-Peter Clausen Acked-by: Peter Rosin Link: https://lore.kernel.org/r/20211007134641.13417-4-vincent.whitchurch@axis.com Signed-off-by: Jonathan Cameron

iio: multiplexer: iio-mux: Simplify with dev_err_probe()

2020-09-03T18:40:51+00:00

Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and also it prints the error value. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Andy Shevchenko Acked-by: Peter Rosin Link: https://lore.kernel.org/r/20200829064726.26268-18-krzk@kernel.org Signed-off-by: Jonathan Cameron

iio: remove explicit IIO device parent assignment

2020-06-14T10:49:59+00:00

This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

iio: multiplexer: switch to SPDX license identifier

2018-08-20T18:28:26+00:00

Drop the boilerplate license text. Signed-off-by: Peter Rosin Signed-off-by: Jonathan Cameron