diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2022-10-07 15:40:21 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-06-09 12:07:22 +0300 |
| commit | 7d283f4148f184b200854acdc21308e5bfee9fc1 (patch) | |
| tree | c9a8fdf47a9f5ccd78c3cfc4c03df1a929412654 /drivers/thunderbolt/tb.c | |
| parent | 701e73a823bb887be1aabebf1ffaba068d329550 (diff) | |
| download | linux-7d283f4148f184b200854acdc21308e5bfee9fc1.tar.xz | |
thunderbolt: Get rid of tb_switch_enable_tmu_1st_child()
This is better to be part of the software connection manager flows in
tb.c. Also name the new function tb_increase_tmu_accuracy() to match
what it actually does.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.c')
| -rw-r--r-- | drivers/thunderbolt/tb.c | 43 |
1 files changed, 34 insertions, 9 deletions
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 72041e29e544..39ec7094fe17 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -240,6 +240,38 @@ static void tb_discover_dp_resources(struct tb *tb) } } +static int tb_increase_switch_tmu_accuracy(struct device *dev, void *data) +{ + struct tb_switch *sw; + + sw = tb_to_switch(dev); + if (sw) { + tb_switch_tmu_configure(sw, TB_SWITCH_TMU_RATE_HIFI, + tb_switch_is_clx_enabled(sw, TB_CL1)); + if (tb_switch_tmu_enable(sw)) + tb_sw_warn(sw, "failed to increase TMU rate\n"); + } + + return 0; +} + +static void tb_increase_tmu_accuracy(struct tb_tunnel *tunnel) +{ + struct tb_switch *sw; + + if (!tunnel) + return; + + /* + * Once first DP tunnel is established we change the TMU + * accuracy of first depth child routers (and the host router) + * to the highest. This is needed for the DP tunneling to work + * but also allows CL0s. + */ + sw = tunnel->tb->root_switch; + device_for_each_child(&sw->dev, NULL, tb_increase_switch_tmu_accuracy); +} + static void tb_switch_discover_tunnels(struct tb_switch *sw, struct list_head *list, bool alloc_hopids) @@ -253,13 +285,7 @@ static void tb_switch_discover_tunnels(struct tb_switch *sw, switch (port->config.type) { case TB_TYPE_DP_HDMI_IN: tunnel = tb_tunnel_discover_dp(tb, port, alloc_hopids); - /* - * In case of DP tunnel exists, change host router's - * 1st children TMU mode to HiFi for CL0s to work. - */ - if (tunnel) - tb_switch_enable_tmu_1st_child(tb->root_switch, - TB_SWITCH_TMU_RATE_HIFI); + tb_increase_tmu_accuracy(tunnel); break; case TB_TYPE_PCIE_DOWN: @@ -1263,8 +1289,7 @@ static void tb_tunnel_dp(struct tb *tb) * In case of DP tunnel exists, change host router's 1st children * TMU mode to HiFi for CL0s to work. */ - tb_switch_enable_tmu_1st_child(tb->root_switch, TB_SWITCH_TMU_RATE_HIFI); - + tb_increase_tmu_accuracy(tunnel); return; err_free: |