linux-stable.git/drivers/leds, branch linux-5.6.y Linux kernel stable tree leds: core: Fix warning message when init_data 2020-04-23T08:38:14+00:00 Ricardo Ribalda Delgado ribalda@kernel.org 2020-04-01T09:51:47+00:00 c872cd2095b98e14401f036d7b13dd64d7f6b762 [ Upstream commit 64ed6588c2ea618d3f9ca9d8b365ae4c19f76225 ] The warning message when a led is renamed due to name collition can fail to show proper original name if init_data is used. Eg: [ 9.073996] leds-gpio a0040000.leds_0: Led (null) renamed to red_led_1 due to name collision Fixes: bb4e9af0348d ("leds: core: Add support for composing LED class device names") Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com> Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 64ed6588c2ea618d3f9ca9d8b365ae4c19f76225 ]

The warning message when a led is renamed due to name collition can fail
to show proper original name if init_data is used. Eg:

[    9.073996] leds-gpio a0040000.leds_0: Led (null) renamed to red_led_1 due to name collision

Fixes: bb4e9af0348d ("leds: core: Add support for composing LED class device names")
Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
leds: lm3692x: Disable chip on brightness 0 2020-01-07T13:09:27+00:00 Guido Günther agx@sigxcpu.org 2020-01-06T15:48:53+00:00 260718b3a35d23fe89d27cc7b5e8bd30f4bba1aa Otherwise there's a noticeable glow even with brightness 0. Also turning off the regulator can save additional power. Signed-off-by: Guido Günther <agx@sigxcpu.org> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
Otherwise there's a noticeable glow even with brightness 0. Also
turning off the regulator can save additional power.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: lm3692x: Split out lm3692x_leds_disable 2020-01-07T13:09:13+00:00 Guido Günther agx@sigxcpu.org 2020-01-06T15:48:52+00:00 4a8d2bee2080d32511b70d8558036894f42617fd Move the relevant parts out of lm3692x_remove() and call it from there. No functional change. Signed-off-by: Guido Günther <agx@sigxcpu.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
Move the relevant parts out of lm3692x_remove() and call it from
there. No functional change.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: lm3692x: Move lm3692x_init and rename to lm3692x_leds_enable 2020-01-07T13:09:01+00:00 Guido Günther agx@sigxcpu.org 2020-01-06T15:48:51+00:00 5e9d7b6f433628b3e178bbf1ca62fe1965afe361 This moves lm3692x_init so it can be used from lm3692x_brightness_set. Rename to lm3692_leds_enable to pair up with lm3692x_leds_disable. No functional change. Signed-off-by: Guido Günther <agx@sigxcpu.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
This moves lm3692x_init so it can be used from
lm3692x_brightness_set. Rename to lm3692_leds_enable to pair up
with lm3692x_leds_disable. No functional change.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: lm3692x: Make sure we don't exceed the maximum LED current 2020-01-07T13:08:38+00:00 Guido Günther agx@sigxcpu.org 2020-01-06T15:48:50+00:00 df7083b57331da0222380392d8d0d8b39972bef9 The current is given by the formular from page 12 of https://www.ti.com/lit/ds/symlink/lm36922.pdf. We use this to limit the led's max_brightness using the led-max-microamp DT property. The formula for the lm36923 is identical according to the data sheet. Signed-off-by: Guido Günther <agx@sigxcpu.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
The current is given by the formular from page 12 of
https://www.ti.com/lit/ds/symlink/lm36922.pdf. We use this to limit the
led's max_brightness using the led-max-microamp DT property.

The formula for the lm36923 is identical according to the data sheet.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: lm3692x: Allow to configure over voltage protection 2020-01-05T23:41:06+00:00 Guido Günther agx@sigxcpu.org 2020-01-04T10:54:18+00:00 cffd61a5c7755546154539dcd7f36590e91e002f Overvoltage protection is currently using the default of 29V. Make it configurable via DT. Signed-off-by: Guido Günther <agx@sigxcpu.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
Overvoltage protection is currently using the default of 29V.  Make it
configurable via DT.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: populate the device's of_node 2020-01-05T23:20:22+00:00 Jean-Jacques Hiblot jjhiblot@ti.com 2020-01-05T22:31:14+00:00 7a349e8c535d7327bf80710323c725df47149b8d If initialization data is available and its fwnode is actually a of_node, store this information in the led device's structure. This will allow the device to use or provide OF-based API such (devm_xxx). Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
If initialization data is available and its fwnode is actually a
of_node, store this information in the led device's structure. This
will allow the device to use or provide OF-based API such (devm_xxx).

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: Add managed API to get a LED from a device driver 2020-01-05T23:20:18+00:00 Jean-Jacques Hiblot jjhiblot@ti.com 2019-10-03T08:28:10+00:00 e389240ad99292d52a4f8ff30f16830dc9c63779 If the LED is acquired by a consumer device with devm_led_get(), it is automatically released when the device is detached. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
If the LED is acquired by a consumer device with devm_led_get(), it is
automatically released when the device is detached.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: Add of_led_get() and led_put() 2020-01-05T23:20:06+00:00 Tomi Valkeinen tomi.valkeinen@ti.com 2019-10-03T08:28:09+00:00 699a8c7c4bd376aee4808e6272188319e900c8af This patch adds basic support for a kernel driver to get a LED device. This will be used by the led-backlight driver. Only OF version is implemented for now, and the behavior is similar to PWM's of_pwm_get() and pwm_put(). Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Pavel Machek <pavel@ucw.cz> 
This patch adds basic support for a kernel driver to get a LED device.
This will be used by the led-backlight driver.

Only OF version is implemented for now, and the behavior is similar to
PWM's of_pwm_get() and pwm_put().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
leds: lm3532: add pointer to documentation and fix typo 2020-01-05T23:16:01+00:00 Pavel pavel@ucw.cz 2020-01-05T22:36:58+00:00 31e065c4e8bac71be29a9d4d65ea62f5c9ec17b3 Add pointer to datasheet and fix typo in printk message. Signed-off-by: Pavel Machek <pavel@ucw.cz> 
Add pointer to datasheet and fix typo in printk message.

Signed-off-by: Pavel Machek <pavel@ucw.cz>