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.