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linux/drivers/leds
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Henning Schild c64964ebee leds: simatic-ipc-leds-gpio: Make sure we have the GPIO providing driver 
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: a6c80bec3c ("leds: simatic-ipc-leds-gpio: Add GPIO version of Siemens driver")
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221007153323.1326-1-henning.schild@siemens.com
2023-01-30 08:03:43 +00:00
..
blink leds: lgm-sso: switch to using devm_fwnode_gpiod_get() 2022-11-09 13:59:28 +01:00
flash leds: mt6360: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:39 +00:00
rgb pwm: Changes for v6.2-rc1 2022-12-21 09:41:28 -08:00
simple leds: simatic-ipc-leds-gpio: Make sure we have the GPIO providing driver 2023-01-30 08:03:43 +00:00
trigger treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
Kconfig leds: is31fl319x: Make use of device properties 2022-08-02 16:43:30 +02:00
led-class-flash.c led-class-flash: fix -Wrestrict warning 2021-09-27 16:09:42 +02:00
led-class-multicolor.c leds: multicolor: Introduce a multicolor class definition 2020-07-22 14:41:29 +02:00
led-class.c leds: led-core: Fix refcount leak in of_led_get() 2023-01-30 08:03:13 +00:00
led-core.c leds: move default_state read from fwnode to core 2021-08-18 08:27:30 +02:00
led-triggers.c leds: trigger: use RCU to protect the led_cdevs list 2021-09-27 16:16:42 +02:00
leds-88pm860x.c leds: various: use only available OF children 2020-09-26 21:56:39 +02:00
leds-acer-a500.c leds: Add driver for Acer Iconia Tab A500 2020-09-26 21:56:42 +02:00
leds-adp5520.c
leds-an30259a.c leds: an30259a: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:36 +00:00
leds-apu.c leds: apu: extend support for PC Engines APU1 with newer firmware 2021-02-19 22:15:10 +01:00
leds-ariel.c leds: leds-ariel: convert comma to semicolon 2021-01-31 10:38:02 +01:00
leds-asic3.c
leds-aw2013.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
leds-bcm6328.c leds: bcm6328: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:37 +00:00
leds-bcm6358.c leds: bcm6358: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:38 +00:00
leds-bd2802.c leds: bd2802: Convert to i2c's .probe_new() 2023-01-30 08:03:18 +00:00
leds-blinkm.c leds: blinkm: Convert to i2c's .probe_new() 2023-01-30 08:03:18 +00:00
leds-clevo-mail.c
leds-cobalt-qube.c
leds-cobalt-raq.c
leds-cpcap.c leds: various: use device_get_match_data 2020-09-26 21:56:39 +02:00
leds-cr0014114.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
leds-da903x.c leds: da903x: fix use-after-free on unbind 2020-06-22 10:37:58 +02:00
leds-da9052.c
leds-dac124s085.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
leds-el15203000.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
leds-gpio-register.c leds: leds-gpio-register: Supply description for param 'id' 2021-05-28 11:38:54 +02:00
leds-gpio.c leds: gpio: switch to using devm_fwnode_gpiod_get() 2022-11-09 13:59:21 +01:00
leds-hp6xx.c
leds-ip30.c leds: ip30: compile if COMPILE_TEST=y 2020-09-26 21:56:38 +02:00
leds-ipaq-micro.c
leds-is31fl32xx.c leds: is31fl32xx: Convert to i2c's .probe_new() 2023-01-30 08:03:19 +00:00
leds-is31fl319x.c leds: is31fl319x: Wrap mutex_destroy() for devm_add_action_or_rest() 2023-01-30 08:03:34 +00:00
leds-lm355x.c leds: lm355x: Convert to i2c's .probe_new() 2023-01-30 08:03:21 +00:00
leds-lm3530.c leds: lm3530: Convert to i2c's .probe_new() 2023-01-30 08:03:20 +00:00
leds-lm3532.c leds: lm3532: Convert to i2c's .probe_new() 2023-01-30 08:03:21 +00:00
leds-lm3533.c leds: use sysfs_emit() to instead of scnprintf() 2022-12-07 21:05:20 +01:00
leds-lm3642.c leds: lm3642: Convert to i2c's .probe_new() 2023-01-30 08:03:22 +00:00
leds-lm3692x.c leds: lm3692x: Convert to i2c's .probe_new() 2023-01-30 08:03:23 +00:00
leds-lm3697.c leds: lm3697: Convert to i2c's .probe_new() 2023-01-30 08:03:24 +00:00
leds-lm36274.c leds: lm36274: Add missed property.h 2021-05-30 23:03:48 +02:00
leds-locomo.c ARM: pxa: split up mach/hardware.h 2022-04-19 16:27:05 +02:00
leds-lp50xx.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
leds-lp55xx-common.c leds: use sysfs_emit() to instead of scnprintf() 2022-12-07 21:05:20 +01:00
leds-lp55xx-common.h leds: lp55xx: Add multicolor framework support to lp55xx 2020-07-22 14:42:06 +02:00
leds-lp3944.c leds: lp3944: Convert to i2c's .probe_new() 2023-01-30 08:03:24 +00:00
leds-lp3952.c leds: lp3952: Convert to i2c's .probe_new() 2023-01-30 08:03:25 +00:00
leds-lp5521.c leds: lp5521: Convert to i2c's .probe_new() 2023-01-30 08:03:26 +00:00
leds-lp5523.c leds: lp5523: Convert to i2c's .probe_new() 2023-01-30 08:03:27 +00:00
leds-lp5562.c leds: lp5562: Convert to i2c's .probe_new() 2023-01-30 08:03:28 +00:00
leds-lp8501.c leds: lp8501: Convert to i2c's .probe_new() 2023-01-30 08:03:28 +00:00
leds-lp8788.c
leds-lp8860.c leds: lp8860: Convert to i2c's .probe_new() 2023-01-30 08:03:29 +00:00
leds-lt3593.c leds: lt3593: Put fwnode in any case during ->probe() 2021-08-03 23:49:31 +02:00
leds-max8997.c leds: max8997: Don't error if there is no pdata 2022-10-22 11:55:03 +02:00
leds-max77650.c leds: parse linux,default-trigger DT property in LED core 2020-09-26 21:56:43 +02:00
leds-mc13783.c leds: various: use only available OF children 2020-09-26 21:56:39 +02:00
leds-menf21bmc.c
leds-mlxcpld.c leds: leds-mlxcpld: Fix a bunch of kernel-doc formatting issues 2021-05-28 11:39:00 +02:00
leds-mlxreg.c leds: leds-mlxreg: Fix incorrect documentation of struct member 'led_cdev' and 'led_cdev_name' 2021-05-28 11:38:59 +02:00
leds-mt6323.c leds: mt6323: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:39 +00:00
leds-net48xx.c
leds-netxbig.c leds: Use DEVICE_ATTR_{RW, RO, WO} macros 2020-12-30 19:37:13 +01:00
leds-nic78bx.c
leds-ns2.c leds: ns2: do not guard OF match pointer with of_match_ptr 2020-09-30 19:22:58 +02:00
leds-ot200.c
leds-pca955x.c leds: pca955x: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:40 +00:00
leds-pca963x.c leds: pca963x: Convert to i2c's .probe_new() 2023-01-30 08:03:31 +00:00
leds-pca9532.c leds: pca9532: Convert to i2c's .probe_new() 2023-01-30 08:03:30 +00:00
leds-pm8058.c leds: pm8058: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:41 +00:00
leds-powernv.c leds: various: use only available OF children 2020-09-26 21:56:39 +02:00
leds-pwm.c leds: pwm: Clear the led structure before parsing each child node 2023-01-30 08:00:51 +00:00
leds-rb532.c leds: rb532: cleanup whitespace 2020-01-02 22:41:53 +01:00
leds-regulator.c leds: regulator: Make probeable from device tree 2022-05-05 10:04:52 +02:00
leds-s3c24xx.c leds: s3c24xx: Remove unused machine header include 2020-08-17 18:04:06 +02:00
leds-sc27xx-bltc.c leds: various: use only available OF children 2020-09-26 21:56:39 +02:00
leds-spi-byte.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
leds-ss4200.c leds: ss4200: simplify the return expression of register_nasgpio_led() 2020-12-30 19:37:14 +01:00
leds-sunfire.c
leds-syscon.c leds: syscon: Get rid of custom led_init_default_state_get() 2023-01-30 08:03:42 +00:00
leds-tca6507.c leds: tca6507: Convert to use fwnode_device_is_compatible() 2023-01-30 08:03:43 +00:00
leds-ti-lmu-common.c leds: ti-lmu-common: Move static keyword to the front of declaration 2019-09-03 20:34:46 +02:00
leds-tlc591xx.c leds: tlc591xx: Convert to i2c's .probe_new() 2023-01-30 08:03:32 +00:00
leds-tps6105x.c leds: tps6105x: add driver for MFD chip LED mode 2019-12-21 20:10:02 +01:00
leds-turris-omnia.c leds: turris-omnia: Convert to i2c's .probe_new() 2023-01-30 08:03:33 +00:00
leds-wm831x-status.c leds: Use DEVICE_ATTR_{RW, RO, WO} macros 2020-12-30 19:37:13 +01:00
leds-wm8350.c
leds-wrap.c
leds.h leds: Move led_init_default_state_get() to the global header 2023-01-30 08:03:35 +00:00
Makefile leds: Move pwm-multicolor driver into rgb directory 2022-05-07 23:09:31 +02:00
TODO leds: TODO: Add documentation about possible subsystem improvements 2020-09-30 19:15:33 +02:00
uleds.c