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authorVadim Pasternak <vadimp@mellanox.com>2016-09-08 07:25:53 +0000
committerJacek Anaszewski <j.anaszewski@samsung.com>2016-09-15 16:49:39 +0200
commitbe4fdf99fa4dc95aa01144b207caf2cc9fa074d8 (patch)
tree3f976a3e9ad156a779a4fdd839a270d85348f0f2 /drivers/leds/Kconfig
parent1f70cb4045cba47287fed3ba98dadc7187f13ef8 (diff)
downloadlinux-be4fdf99fa4dc95aa01144b207caf2cc9fa074d8.tar.bz2
leds: add driver for Mellanox systems LEDs
This makes it possible to create a set of LEDs for Mellanox systems: "msx6710", "msx6720", "msb7700", "msn2700", "msx1410", "msn2410", "msb7800", "msn2740", "msn2100". Driver obtains LED devices according to system configuration, provided through system DMI data, like mlxcpld:fan1:green, mlxcpld:fan1:red and creates devices in form: "devicename:colour:function". LED setting is controlled through on board CPLD Lattice device. For setting particular LED off, solid, blink: echo 0 > /sys/class/leds/mlxcpld\:status\:green/brightness echo 1 > /sys/class/leds/mlxcpld\:status\:green/brightness echo timer > /sys/class/leds/mlxcpld\:status\:green/trigger On module probing all LEDs are set green, on removing - off. Last setting overwrites previous, f.e. sequence for changing LED from green - red - green: echo 1 > /sys/class/leds/mlxcpld\:psu\:green/brightness echo 1 > /sys/class/leds/mlxcpld\:psu\:red/brightness echo 1 > /sys/class/leds/mlxcpld\:psu\:green/brightness Note: LEDs cannot be turned on/off simultaneously. The Kconfig currently controlling compilation of this code is: drivers/leds/Kconfig:config LEDS_MLXCPLD Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Diffstat (limited to 'drivers/leds/Kconfig')
-rw-r--r--drivers/leds/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 969c720dfd10..7a628c6516f6 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -651,6 +651,14 @@ config LEDS_PM8058
Choose this option if you want to use the LED drivers in
the Qualcomm PM8058 PMIC.
+config LEDS_MLXCPLD
+ tristate "LED support for the Mellanox boards"
+ depends on X86_64 && DMI
+ depends on LEDS_CLASS
+ help
+ This option enabled support for the LEDs on the Mellanox
+ boards. Say Y to enabled these.
+
comment "LED Triggers"
source "drivers/leds/trigger/Kconfig"