mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 19:23:57 +08:00
be4fdf99fa
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>
111 lines
2.2 KiB
Plaintext
111 lines
2.2 KiB
Plaintext
Kernel driver for Mellanox systems LEDs
|
|
=======================================
|
|
|
|
Provide system LED support for the nex Mellanox systems:
|
|
"msx6710", "msx6720", "msb7700", "msn2700", "msx1410",
|
|
"msn2410", "msb7800", "msn2740", "msn2100".
|
|
|
|
Description
|
|
-----------
|
|
Driver provides the following LEDs for the systems "msx6710", "msx6720",
|
|
"msb7700", "msn2700", "msx1410", "msn2410", "msb7800", "msn2740":
|
|
mlxcpld:fan1:green
|
|
mlxcpld:fan1:red
|
|
mlxcpld:fan2:green
|
|
mlxcpld:fan2:red
|
|
mlxcpld:fan3:green
|
|
mlxcpld:fan3:red
|
|
mlxcpld:fan4:green
|
|
mlxcpld:fan4:red
|
|
mlxcpld:psu:green
|
|
mlxcpld:psu:red
|
|
mlxcpld:status:green
|
|
mlxcpld:status:red
|
|
|
|
"status"
|
|
CPLD reg offset: 0x20
|
|
Bits [3:0]
|
|
|
|
"psu"
|
|
CPLD reg offset: 0x20
|
|
Bits [7:4]
|
|
|
|
"fan1"
|
|
CPLD reg offset: 0x21
|
|
Bits [3:0]
|
|
|
|
"fan2"
|
|
CPLD reg offset: 0x21
|
|
Bits [7:4]
|
|
|
|
"fan3"
|
|
CPLD reg offset: 0x22
|
|
Bits [3:0]
|
|
|
|
"fan4"
|
|
CPLD reg offset: 0x22
|
|
Bits [7:4]
|
|
|
|
Color mask for all the above LEDs:
|
|
[bit3,bit2,bit1,bit0] or
|
|
[bit7,bit6,bit5,bit4]:
|
|
[0,0,0,0] = LED OFF
|
|
[0,1,0,1] = Red static ON
|
|
[1,1,0,1] = Green static ON
|
|
[0,1,1,0] = Red blink 3Hz
|
|
[1,1,1,0] = Green blink 3Hz
|
|
[0,1,1,1] = Red blink 6Hz
|
|
[1,1,1,1] = Green blink 6Hz
|
|
|
|
Driver provides the following LEDs for the system "msn2100":
|
|
mlxcpld:fan:green
|
|
mlxcpld:fan:red
|
|
mlxcpld:psu1:green
|
|
mlxcpld:psu1:red
|
|
mlxcpld:psu2:green
|
|
mlxcpld:psu2:red
|
|
mlxcpld:status:green
|
|
mlxcpld:status:red
|
|
mlxcpld:uid:blue
|
|
|
|
"status"
|
|
CPLD reg offset: 0x20
|
|
Bits [3:0]
|
|
|
|
"fan"
|
|
CPLD reg offset: 0x21
|
|
Bits [3:0]
|
|
|
|
"psu1"
|
|
CPLD reg offset: 0x23
|
|
Bits [3:0]
|
|
|
|
"psu2"
|
|
CPLD reg offset: 0x23
|
|
Bits [7:4]
|
|
|
|
"uid"
|
|
CPLD reg offset: 0x24
|
|
Bits [3:0]
|
|
|
|
Color mask for all the above LEDs, excepted uid:
|
|
[bit3,bit2,bit1,bit0] or
|
|
[bit7,bit6,bit5,bit4]:
|
|
[0,0,0,0] = LED OFF
|
|
[0,1,0,1] = Red static ON
|
|
[1,1,0,1] = Green static ON
|
|
[0,1,1,0] = Red blink 3Hz
|
|
[1,1,1,0] = Green blink 3Hz
|
|
[0,1,1,1] = Red blink 6Hz
|
|
[1,1,1,1] = Green blink 6Hz
|
|
|
|
Color mask for uid LED:
|
|
[bit3,bit2,bit1,bit0]:
|
|
[0,0,0,0] = LED OFF
|
|
[1,1,0,1] = Blue static ON
|
|
[1,1,1,0] = Blue blink 3Hz
|
|
[1,1,1,1] = Blue blink 6Hz
|
|
|
|
Driver supports HW blinking at 3Hz and 6Hz frequency (50% duty cycle).
|
|
For 3Hz duty cylce is about 167 msec, for 6Hz is about 83 msec.
|