kernel/drivers/pps/clients/pps-gpio.c, branch linux-6.9.y

pps: clients: gpio: Propagate return value from pps_gpio_probe

2022-02-04T14:33:42Z

If the pps-gpio driver was probed prior to the GPIO device it uses, the devm_gpiod_get call returned an -EPROBE_DEFER error, but pps_gpio_probe replaced that error code with -EINVAL, causing the pps-gpio probe to fail and not be retried later. Propagate the error return value so that deferred probe works properly. Fixes: 161520451dfa (pps: new client driver using GPIO) Reviewed-by: Andy Shevchenko Acked-by: Rodolfo Giometti Signed-off-by: Robert Hancock Signed-off-by: Rodolfo Giometti Link: https://lore.kernel.org/r/20220112205214.2060954-1-robert.hancock@calian.com Signed-off-by: Greg Kroah-Hartman

pps: clients: gpio: Rearrange optional stuff in pps_gpio_setup()

2021-03-24T07:26:32Z

Rearrange optional stuff in pps_gpio_setup() so it will go after mandatory one and with reduced indentation. This will increase readability of the sources. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318130321.24227-7-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

pps: clients: gpio: Use struct device pointer directly

2021-03-24T07:26:32Z

In most parts of the code the platform device is not used. Use struct device pointer directly to reduce code size and increase readability. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318130321.24227-6-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

pps: clients: gpio: Make use of device properties

2021-03-24T07:26:32Z

Device property API allows to gather device resources from different sources, such as ACPI. Convert the drivers to unleash the power of device property API. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318130321.24227-5-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

pps: clients: gpio: Get rid of legacy platform data

2021-03-24T07:26:32Z

Platform data is a legacy interface to supply device properties to the driver. In this case we even don't have in-kernel users for it. Just remove it for good. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318130321.24227-4-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

pps: clients: gpio: Remove redundant condition in ->remove()

2021-03-24T07:26:31Z

The timer along with GPIO API are NULL-aware, there is no need to test against existing GPIO echo line. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318130321.24227-3-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

pps: clients: gpio: Use dev_err_probe() to avoid log noise

2021-03-24T07:26:31Z

When GPIO APIs return -EPROBE_DEFER there is no need to print the message, especially taking into consideration that it may repeat several times. Use dev_err_probe() to avoid log noise in such cases. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318130321.24227-2-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

pps: clients: gpio: Bail out on error when requesting GPIO echo line

2021-03-24T07:26:31Z

When requesting optional GPIO echo line, bail out on error, so user will know that something wrong with the existing property. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318130321.24227-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61

2019-05-24T15:36:45Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Michael Ellerman (powerpc) Reviewed-by: Richard Fontana Reviewed-by: Allison Randal Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman

pps: pps-gpio PPS ECHO implementation

2019-05-15T02:52:51Z

This patch implements the PPS ECHO functionality for pps-gpio, that sysfs claims is available already. Configuration is done via device tree bindings. No changes are made to userspace interfaces. This patch was originally written by Lukas Senger as part of a masters thesis project and modified for inclusion into the linux kernel by Tom Burkart. Link: http://lkml.kernel.org/r/20190324043305.6627-4-tom@aussec.com Signed-off-by: Tom Burkart Acked-by: Rodolfo Giometti Signed-off-by: Lukas Senger Cc: Philipp Zabel Cc: Rob Herring Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds