kernel/drivers/gpio/gpiolib-devprop.c, branch linux-6.9.y

gpiolib: unexport devprop_gpiochip_set_names()

2020-09-14T08:54:42Z

Now that devprop_gpiochip_set_names() is only used in a single place inside drivers/gpio/gpiolib.c, there's no need anymore for it to be exported or to even live in its own source file. Pull this function into the core source file for gpiolib. Signed-off-by: Bartosz Golaszewski Reviewed-by: Mika Westerberg Reviewed-by: Andy Shevchenko

gpiolib: generalize devprop_gpiochip_set_names() for device properties

2020-09-14T08:54:01Z

devprop_gpiochip_set_names() is overly complicated with taking the fwnode argument (which requires using dev_fwnode() & of_fwnode_handle() in ACPI and OF GPIO code respectively). Let's just switch to using the generic device properties. This allows us to pull the code setting line names directly into gpiochip_add_data_with_key() instead of handling it separately for ACPI and OF. Signed-off-by: Bartosz Golaszewski Reviewed-by: Andy Shevchenko Reviewed-by: Mika Westerberg

gpiolib: devprop: Warn if gpio-line-names is too long

2020-04-24T07:10:01Z

Some DT authors (including myself) have messed up the length of gpio-line-names and made it longer than it should be. Add a warning here so that developers can figure out that they've messed up their DT and should fix it. Cc: Alexandru M Stan Signed-off-by: Stephen Boyd Signed-off-by: Bartosz Golaszewski

gpiolib: devprop: Fix syntax error

2019-04-08T09:20:12Z

EXPORT_SYMBOL_GPL() needs a semicolon at the end, also explicitly include as well. Fixes: 64ebde5b0fdb ("gpiolib: export devprop_gpiochip_set_names()") Acked-by: Jan Kundrát Signed-off-by: Linus Walleij

gpiolib: export devprop_gpiochip_set_names()

2019-03-24T03:48:02Z

This function is needed in mcp23s08. That driver is a special snowflake because it supports several hardware chips as a single "GPIO chip" under Linux. Signed-off-by: Jan Kundrát Cc: Linus Walleij Cc: Phil Reid Acked-by: Mika Westerberg Signed-off-by: Linus Walleij

Accept partial 'gpio-line-names' property.

2018-10-01T11:15:06Z

Documentation/devicetree/bindings/gpio/gpio.txt says: "The names are assigned starting from line offset 0 from left to right from the passed array. An incomplete array (where the number of passed named are less than ngpios) will still be used up until the last provided valid line index". This patch makes it actually work this way. Signed-off-by: Christophe Blaess Signed-off-by: Patrick Boettcher Signed-off-by: Linus Walleij

gpio: Use SPDX header for core library

2018-09-25T07:08:48Z

Use the SPDX headers and cut down on boilerplate to indicate the license in the core gpiolib implementation. Signed-off-by: Linus Walleij

gpio: fix "gpio-line-names" property retrieval

2017-12-22T14:24:31Z

Following commit 9427ecbed46cc ("gpio: Rework of_gpiochip_set_names() to use device property accessors"), "gpio-line-names" DT property is not retrieved anymore when chip->parent is not set by the driver. This is due to OF based property reads having been replaced by device based property reads. This patch fixes that by making use of fwnode_property_read_string_array() instead of device_property_read_string_array() and handing over either of_fwnode_handle(chip->of_node) or dev_fwnode(chip->parent) to that function. Fixes: 9427ecbed46cc ("gpio: Rework of_gpiochip_set_names() to use device property accessors") Cc: stable@vger.kernel.org Signed-off-by: Christophe Leroy Acked-by: Mika Westerberg Signed-off-by: Linus Walleij

gpio: gpiolib-devprop: Check chip->parent pointer before dereferencing

2016-10-25T18:23:19Z

Confirm the chip->parent is valid before dereferencing because the parent parameter is optional. Signed-off-by: Thor Thayer Signed-off-by: Linus Walleij

gpio: Rework of_gpiochip_set_names() to use device property accessors

2016-10-24T14:33:11Z

In order to use "gpio-line-names" property in systems not having DT as their boot firmware, rework of_gpiochip_set_names() to use device property accessors. This reworked function is placed in a separate file making it clear it deals with universal device properties. Signed-off-by: Mika Westerberg Signed-off-by: Linus Walleij