kernel/linux.git/drivers/thunderbolt/debugfs.c, branch v6.18.21Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.18.212025-08-26T05:59:41+00:00thunderbolt: Use string choices helpers2025-08-26T05:59:41+00:00Chelsy Ratnawatchelsyratnawat2001@gmail.com2025-08-24T15:13:16+00:00urn:sha1:b06578497e6f32fa181235f5a64746c7d40259e6
Use string_choices.h helpers instead of hard-coded strings.
Signed-off-by: Chelsy Ratnawat <chelsyratnawat2001@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: Expose router DROM through debugfs2025-01-05T08:35:03+00:00Mika Westerbergmika.westerberg@linux.intel.com2024-12-21T12:52:43+00:00urn:sha1:43d84701d2aa147eab39b529919ffaf35f724bbb
Router DROM contains information that might be usable for development
and debugging purposes. For example when new entries are added to the
USB4 spec it is useful to be able to look for them without need to
change the kernel.
For this reason expose the DROM through debugfs.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Add write capability to path config space2025-01-03T09:50:02+00:00Gil Finegil.fine@linux.intel.com2024-11-11T20:52:11+00:00urn:sha1:398da8e64321db638aa0f3b11d841e2d1b0fc4b4
Currently debugfs interface allows writing of router, adapter and
counters config spaces but not for paths. However, it can be useful
during debugging to modify path config space so for this reason add this
support to the debugfs interface as well.
Signed-off-by: Gil Fine <gil.fine@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Implement asymmetric lane margining2024-11-01T05:55:38+00:00Aapo Vienamoaapo.vienamo@iki.fi2024-08-15T18:45:20+00:00urn:sha1:916f26f1c24cc0b538b222fc46f500950b942d99
Add support for the RX2 receiver which is used as the third receiver in
asymmetric links. This requires expanding the results array for the
additional third data word of the hardware margining results.
Signed-off-by: Aapo Vienamo <aapo.vienamo@iki.fi>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Don't hardcode margining results size2024-11-01T05:55:38+00:00Aapo Vienamoaapo.vienamo@iki.fi2024-08-15T18:45:19+00:00urn:sha1:750365ef8c1718de9a7b25799d69ac0ee13be275
Use ARRAY_SIZE() when available or pass in the array size derived from
it. This is in preparation for adding another result data word for
supporting Gen 4 asymmetric links with an additional lane.
Signed-off-by: Aapo Vienamo <aapo.vienamo@iki.fi>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Refactor hardware margining result parsing2024-11-01T05:55:38+00:00Aapo Vienamoaapo.vienamo@iki.fi2024-08-15T18:45:18+00:00urn:sha1:3499c0a992e432cb8a85616ff4a9019a8924c89a
Make the result parsing and formatting code less repetitive in
preparation for adding another result for Gen 4 asymmetric link support.
Signed-off-by: Aapo Vienamo <aapo.vienamo@iki.fi>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Replace margining lane numbers with an enum2024-11-01T05:55:38+00:00Aapo Vienamoaapo.vienamo@iki.fi2024-08-15T18:45:17+00:00urn:sha1:3bf090e9d6df8805ca4d5222ce4d8a1e99ab6724
Replace the raw values and macros with an enum and use it consistently.
No functional changes.
Signed-off-by: Aapo Vienamo <aapo.vienamo@iki.fi>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Replace "both lanes" with "all lanes"2024-11-01T05:55:38+00:00Aapo Vienamoaapo.vienamo@iki.fi2024-08-15T18:45:16+00:00urn:sha1:e6c9905ff4d8f898c06bb30a37ac9ba21885dc26
With USB4 Gen 4, the link can be configured into an asymmetric mode,
where there are three receivers and only one transmitter. The USB4
specification also uses the "all lanes" nomenclature instead of "both
lanes".
Signed-off-by: Aapo Vienamo <aapo.vienamo@iki.fi>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Implement Gen 4 margining eye selection2024-11-01T05:55:38+00:00Aapo Vienamoaapo.vienamo@iki.fi2024-08-15T18:45:15+00:00urn:sha1:c8c08fd9c23b5e6a11336675b2584315f87001cc
Add a debugfs knob for USB4 Gen 4 margining eye selection. Gen 4 uses
3-level pulse amplitude modulation (PAM3) which changes how margining
measurements are made because PAM3 has two eyes per lane from which
the margins can be measured.
Signed-off-by: Aapo Vienamo <aapo.vienamo@iki.fi>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
thunderbolt: debugfs: Add USB4 Gen 4 margining capabilities2024-11-01T05:55:37+00:00Aapo Vienamoaapo.vienamo@iki.fi2024-08-15T18:45:14+00:00urn:sha1:c9077d59adf43c9e9303e4651248839162fd9be6
Parse the Gen 4 specific capabilities. Change the return types of
independent_voltage_margins() and independent_time_margins() to enums
that distinguish between the Gen 2/3 and Gen 4 margins since they behave
differently between generations.
Signed-off-by: Aapo Vienamo <aapo.vienamo@iki.fi>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>