diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-12-28 16:47:39 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2024-02-16 12:29:22 +0200 |
| commit | c7857ee68e1b9b805430f365392b6d40f75a48fc (patch) | |
| tree | f7417c2088d83979026a5eca827ade1cceb214a9 /drivers/thunderbolt | |
| parent | d44b9827e7f460c7555800065de81b75f4967145 (diff) | |
| download | linux-c7857ee68e1b9b805430f365392b6d40f75a48fc.tar.gz | |
thunderbolt: Handle bandwidth allocation mode disable request
Graphics can disable DisplayPort bandwidth allocation mode as well so if
this make sure to reset the tunnel state accordingly.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/tb.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 5b0434c140f93f..abd86fd8d71fe7 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -2406,8 +2406,23 @@ static void tb_handle_dp_bandwidth_request(struct work_struct *work) tb_port_dbg(in, "handling bandwidth allocation request\n"); + tunnel = tb_find_tunnel(tb, TB_TUNNEL_DP, in, NULL); + if (!tunnel) { + tb_port_warn(in, "failed to find tunnel\n"); + goto put_sw; + } + if (!usb4_dp_port_bandwidth_mode_enabled(in)) { - tb_port_warn(in, "bandwidth allocation mode not enabled\n"); + if (tunnel->bw_mode) { + /* + * Reset the tunnel back to use the legacy + * allocation. + */ + tunnel->bw_mode = false; + tb_port_dbg(in, "DPTX disabled bandwidth allocation mode\n"); + } else { + tb_port_warn(in, "bandwidth allocation mode not enabled\n"); + } goto put_sw; } @@ -2432,11 +2447,6 @@ static void tb_handle_dp_bandwidth_request(struct work_struct *work) tb_port_dbg(in, "requested bandwidth %d Mb/s\n", requested_bw); - tunnel = tb_find_tunnel(tb, TB_TUNNEL_DP, in, NULL); - if (!tunnel) { - tb_port_warn(in, "failed to find tunnel\n"); - goto put_sw; - } out = tunnel->dst_port; |