linux-stable.git/drivers/leds/simple, branch v6.5.2

leds: simatic-ipc-leds-gpio: Introduce more Kconfig switches

2023-06-08T17:29:47+00:00

To describe the dependency chain better and allow for potential
fine-grained config tuning, introduce Kconfig switch for the individual
GPIO based drivers.

Signed-off-by: Henning Schild 
Acked-by: Hans de Goede 
Signed-off-by: Lee Jones 
Link: https://lore.kernel.org/r/20230524124628.32295-5-henning.schild@siemens.com

leds: simatic-ipc-leds-gpio: Split up into multiple drivers

2023-06-08T17:29:44+00:00

In order to clearly describe the dependencies between the GPIO
controller drivers and the users the driver is split up into a core,
two drivers and a common header.

Signed-off-by: Henning Schild 
Acked-by: Hans de Goede 
Signed-off-by: Lee Jones 
Link: https://lore.kernel.org/r/20230524124628.32295-4-henning.schild@siemens.com

leds: simatic-ipc-leds-gpio: Move two extra gpio pins into another table

2023-06-08T17:29:42+00:00

There are two special pins needed to init the LEDs. We used to have them
at the end of the gpiod_lookup table to give to "leds-gpio". A cleaner
way is to have a dedicated table for the special pins.

Signed-off-by: Henning Schild 
Acked-by: Hans de Goede 
Signed-off-by: Lee Jones 
Link: https://lore.kernel.org/r/20230524124628.32295-3-henning.schild@siemens.com

leds: simatic-ipc-leds-gpio: Add terminating entries to gpio tables

2023-06-08T17:29:20+00:00

The entries do not seem to be stricly needed when the number of entries
is given via the number of LEDs. But adding them is a safeguard should
anyone ever iterate over the tables to their end, it also gets us in
line with other drivers that register "leds-gpio" tables.

Reported-by: Andy Shevchenko 
Signed-off-by: Henning Schild 
Reviewed-by: Andy Shevchenko 
Acked-by: Hans de Goede 
Signed-off-by: Lee Jones 
Link: https://lore.kernel.org/r/20230524124628.32295-2-henning.schild@siemens.com

leds: simatic-ipc-leds-gpio: Make sure we have the GPIO providing driver

2023-01-30T08:03:43+00:00

If we register a "leds-gpio" platform device for GPIO pins that do not
exist we get a -EPROBE_DEFER and the probe will be tried again later.
If there is no driver to provide that pin we will poll forever and also
create a lot of log messages.

So check if that GPIO driver is configured, if so it will come up
eventually. If not, we exit our probe function early and do not even
bother registering the "leds-gpio". This method was chosen over "Kconfig
depends" since this way we can add support for more devices and GPIO
backends more easily without "depends":ing on all GPIO backends.

Fixes: a6c80bec3c93 ("leds: simatic-ipc-leds-gpio: Add GPIO version of Siemens driver")
Signed-off-by: Henning Schild 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Lee Jones 
Link: https://lore.kernel.org/r/20221007153323.1326-1-henning.schild@siemens.com

leds: simatic-ipc-leds-gpio: fix incorrect LED to GPIO mapping

2022-10-24T09:32:10+00:00

For apollolake the mapping between LEDs and GPIO pins was off because of
a refactoring when we introduced a new device model.
In addition to the reordering the indices in the lookup table need to be
updated as well.

Fixes: a97126265dfe ("leds: simatic-ipc-leds-gpio: add new model 227G")
Signed-off-by: Henning Schild 
Link: https://lore.kernel.org/r/20221024092027.4529-1-henning.schild@siemens.com
Reviewed-by: Hans de Goede 
Signed-off-by: Hans de Goede

leds: simatic-ipc-leds-gpio: Make simatic_ipc_led_gpio_table static

2022-09-10T12:16:16+00:00

simatic_ipc_led_gpio_table is only used inside simatic-ipc-leds-gpio.c,
make it static.

Reported-by: kernel test robot 
Signed-off-by: Hans de Goede 
Link: https://lore.kernel.org/r/20220910085836.84962-1-hdegoede@redhat.com

leds: simatic-ipc-leds-gpio: add new model 227G

2022-09-01T14:14:49+00:00

This adds support of the Siemens Simatic IPC227G. Its LEDs are connected
to GPIO pins provided by the gpio-f7188x module. We make sure that
gets loaded, if not enabled in the kernel config no LED support will be
available.

Reviewed-by: Andy Shevchenko 
Reviewed-by: Hans de Goede 
Signed-off-by: Henning Schild 
Link: https://lore.kernel.org/r/20220825104422.14156-6-henning.schild@siemens.com
Signed-off-by: Hans de Goede

leds: simatic-ipc-leds-gpio: Add GPIO version of Siemens driver

2022-07-14T09:50:43+00:00

On Apollo Lake the pinctrl drivers will now come up without ACPI. Use
that instead of open coding it.
Create a new driver for that which can later be filled with more GPIO
based models, and which has different dependencies.

Signed-off-by: Henning Schild 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Lee Jones

leds: simatic-ipc-leds: Convert to use P2SB accessor

2022-07-14T09:50:36+00:00

Since we have a common P2SB accessor in tree we may use it instead of
open coded variants.

Replace custom code by p2sb_bar() call.

Signed-off-by: Henning Schild 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Lee Jones