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| author | Mika Westerberg | 2018-10-11 11:33:08 +0200 |
|---|---|---|
| committer | Mika Westerberg | 2019-04-18 10:18:51 +0200 |
| commit | e879a709de0210802ba14243a168d632cb7ab527 (patch) | |
| tree | 755d8ff601ef92bc67802e9663a76ee156ba371a /drivers/thunderbolt/switch.c | |
| parent | thunderbolt: Move LC specific functionality into a separate file (diff) | |
| download | kernel-qcow2-linux-e879a709de0210802ba14243a168d632cb7ab527.tar.gz kernel-qcow2-linux-e879a709de0210802ba14243a168d632cb7ab527.tar.xz kernel-qcow2-linux-e879a709de0210802ba14243a168d632cb7ab527.zip | |
thunderbolt: Configure lanes when switch is initialized
Thunderbolt 2 devices and beyond need to have additional bits set in
link controller specific registers. This includes two bits in LC_SX_CTRL
that tell the link controller which lane is connected and whether it is
upstream facing or not.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/switch.c')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 63ff4c753d89..dd218dc4781b 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1276,6 +1276,10 @@ int tb_switch_configure(struct tb_switch *sw) if (ret) return ret; + ret = tb_lc_configure_link(sw); + if (ret) + return ret; + return tb_plug_events_active(sw, true); } @@ -1486,6 +1490,7 @@ void tb_switch_remove(struct tb_switch *sw) if (!sw->is_unplugged) tb_plug_events_active(sw, false); + tb_lc_unconfigure_link(sw); tb_switch_nvm_remove(sw); @@ -1545,6 +1550,10 @@ int tb_switch_resume(struct tb_switch *sw) if (err) return err; + err = tb_lc_configure_link(sw); + if (err) + return err; + err = tb_plug_events_active(sw, true); if (err) return err; |