diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-09-08 12:07:47 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-10-20 18:18:01 +0300 |
| commit | ce91d793ab8bc55804cdac2536bc33c249e75196 (patch) | |
| tree | 4324fd4134b62028ab66f11dfa84f3674a2911f4 /drivers/thunderbolt/path.c | |
| parent | 582e70b0d3a412d15389a3c9c07a44791b311715 (diff) | |
| download | linux-ce91d793ab8bc55804cdac2536bc33c249e75196.tar.xz | |
thunderbolt: Set path power management packet support bit for USB4 v2 routers
USB4 v2 spec allows USB4 links that are part of a pass through tunnel
(such as DisplayPort and USB 3.x Gen T) to enter lower CL states, which
provide better power management. For this USB4 v2 routers in their path
config space of lane 0 adapter include a new bit PMPS (PM packet
support) that needs to be set.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/path.c')
| -rw-r--r-- | drivers/thunderbolt/path.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/thunderbolt/path.c b/drivers/thunderbolt/path.c index ee03fd75a472..091a81bbdbdc 100644 --- a/drivers/thunderbolt/path.c +++ b/drivers/thunderbolt/path.c @@ -19,9 +19,9 @@ static void tb_dump_hop(const struct tb_path_hop *hop, const struct tb_regs_hop tb_port_dbg(port, " In HopID: %d => Out port: %d Out HopID: %d\n", hop->in_hop_index, regs->out_port, regs->next_hop); - tb_port_dbg(port, " Weight: %d Priority: %d Credits: %d Drop: %d\n", - regs->weight, regs->priority, - regs->initial_credits, regs->drop_packages); + tb_port_dbg(port, " Weight: %d Priority: %d Credits: %d Drop: %d PM: %d\n", + regs->weight, regs->priority, regs->initial_credits, + regs->drop_packages, regs->pmps); tb_port_dbg(port, " Counter enabled: %d Counter index: %d\n", regs->counter_enable, regs->counter); tb_port_dbg(port, " Flow Control (In/Eg): %d/%d Shared Buffer (In/Eg): %d/%d\n", @@ -535,6 +535,7 @@ int tb_path_activate(struct tb_path *path) hop.next_hop = path->hops[i].next_hop_index; hop.out_port = path->hops[i].out_port->port; hop.initial_credits = path->hops[i].initial_credits; + hop.pmps = path->hops[i].pm_support; hop.unknown1 = 0; hop.enable = 1; |