linux-toradex.git/drivers/thunderbolt/tb.h, branch v6.5-rc4

thunderbolt: Make bandwidth allocation mode function names consistent

2023-06-16T06:53:29+00:00

Make sure the DisplayPort bandwidth allocation mode function names are
consistent with the existing ones, such as USB3.

No functional changes.

Signed-off-by: Mika Westerberg

thunderbolt: Add support for enhanced uni-directional TMU mode

2023-06-16T06:53:28+00:00

This is new TMU mode introduced with the USB4 v2. This mode is simpler
than the existing ones and allows all CL states as well. Enable this for
all links where both side routers are v2 and keep the existing
functionality for the v1 and earlier links.

Currently only support the MedRes rate. We can add the HiFi rate later
too if it turns out to be useful.

Signed-off-by: Mika Westerberg

thunderbolt: Move constants related to NVM into nvm.c

2023-06-16T06:53:28+00:00

Move constants related to NVM into nvm.c to make the code cleaner. Use a
separate constant for USB4_DATA_DWORDS in usb4.c.

No functional changes.

Signed-off-by: Gil Fine 
Signed-off-by: Mika Westerberg

thunderbolt: Enable USB4 v2 PCIe TLP/DLLP extended encapsulation

2023-06-16T06:53:28+00:00

USB4 v2 spec introduces modified encapsulation of PCIe TLP and DLLP
packets. This improves the PCIe tunneled traffic usage by reducing
overhead. Enable this if both sides of the link support it.

Signed-off-by: Gil Fine 
Signed-off-by: Mika Westerberg

thunderbolt: Add support for USB4 v2 80 Gb/s link

2023-06-16T06:53:27+00:00

USB4 v2 bumps the per-lane speed up to 40 Gb/s. Also the lanes are
always bonded which gives 80 Gb/s symmetric link (and 120/40 Gb/s
asymmetric). This updates the speed and width of routers and XDomain
connections to support the Gen 4 link. For now we keep the link as is
even if it is already asymmetric.

While there make tb_port_set_link_width() static.

Signed-off-by: Gil Fine 
Signed-off-by: Mika Westerberg

thunderbolt: Identify USB4 v2 routers

2023-06-16T06:53:27+00:00

Add a new function usb4_switch_version() that can be used to figure out
the spec version of the router and make tb_switch_is_usb4() to use it as
well. Update the uevent accordingly.

Signed-off-by: Gil Fine 
Signed-off-by: Mika Westerberg

thunderbolt: Enable/disable sideband depending on USB4 port offline mode

2023-06-12T05:38:01+00:00

When USB4 port is in offline mode (this mean there is no device
attached) we want to keep the sideband up to make it possible to
communicate with the retimers. In the same way there is no need to
enable sideband transactions when the USB4 port is not offline as they
are already up.

For this reason make the enabling/disabling depend on the USB4 port
offline status.

Signed-off-by: Mika Westerberg

thunderbolt: Initialize CL states from the hardware

2023-06-09T09:07:24+00:00

In case the boot firmware enabled any of them, read the currently
configured CL states and update the router structure accordingly.

Signed-off-by: Mika Westerberg

thunderbolt: Switch CL states from enum to a bitmask

2023-06-09T09:07:23+00:00

This is more natural and follows the hardware register layout better.
This makes it easier to see which CL states we enable (even though they
should be enabled together). Rename 'clx_mask' to 'clx' everywhere as
this is now always bitmask.

Signed-off-by: Mika Westerberg

thunderbolt: Move CLx support functions into clx.c

2023-06-09T09:07:23+00:00

There really don't belong to switch.c so move them into their own file.
As we do this rename the functions to match the conventions used
elsewhere in the driver.

No functional changes.

Signed-off-by: Mika Westerberg