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| author | Ajay Gupta <[email protected]> | 2020-03-10 15:19:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2020-03-12 09:49:28 +0100 |
| commit | 706f4bbf187c68cb360548659be7191e43b3650c (patch) | |
| tree | 6aee74725ca55192d90a65624ad5c357fa82ece2 /lib/mpi/mpi-div.c | |
| parent | 0de005d0e4270f2dad5289d6dea8db041fba6199 (diff) | |
usb: typec: ucsi_ccg: workaround for NVIDIA test device
NVIDIA VirtualLink (svid 0x955) has two altmode, vdo=0x1 for
VirtualLink DP mode and vdo=0x3 for NVIDIA test mode. NVIDIA
test device FTB (Function Test Board) reports altmode list with
vdo=0x3 first and then vdo=0x1. The list is:
SVID VDO
0xff01 0xc05
0x28de 0x8085
0x955 0x3
0x955 0x1
Current logic to assign mode value is based on order
in altmode list. This causes a mismatch of CON and SOP altmodes
since NVIDIA GPU connector has order of vdo=0x1 first and then
vdo=0x3. Fixing this by changing the order of vdo values
reported by NVIDIA test device. the new list will be:
SVID VDO
0xff01 0xc05
0x28de 0x8085
0x955 0x1085
0x955 0x3
Also NVIDIA VirtualLink (svid 0x955) uses pin E for display mode.
NVIDIA test device reports vdo of 0x1 so make sure vdo values
always have pin E assignement.
Signed-off-by: Ajay Gupta <[email protected]>
Signed-off-by: Heikki Krogerus <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-div.c')
0 files changed, 0 insertions, 0 deletions