diff options
| author | Gil Fine <gil.fine@intel.com> | 2021-12-17 04:16:43 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-12-28 10:43:56 +0300 |
| commit | 43f977bc60b1cfd3c1d220a9a0a06493fbf3985d (patch) | |
| tree | e1dd6423c1c4b1e0defc5454a90f09f041a2b105 /drivers/thunderbolt/tb.h | |
| parent | 483c9d8275aff428df433e9d7c718609345500e2 (diff) | |
| download | linux-43f977bc60b1cfd3c1d220a9a0a06493fbf3985d.tar.xz | |
thunderbolt: Enable CL0s for Intel Titan Ridge
Low power link states (called collectively CLx) are used to reduce
transmitter and receiver power when a high-speed lane is idle. The
simplest one being called CL0s. Follow what we already do for USB4
device routers and enable CL0s for Intel Titan Ridge device router too.
This allows better thermal management.
Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index f416e4dcda76..74d3b14f004e 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -140,6 +140,7 @@ enum tb_clx { * @cap_plug_events: Offset to the plug events capability (%0 if not found) * @cap_vsec_tmu: Offset to the TMU vendor specific capability (%0 if not found) * @cap_lc: Offset to the link controller capability (%0 if not found) + * @cap_lp: Offset to the low power (CLx for TBT) capability (%0 if not found) * @is_unplugged: The switch is going away * @drom: DROM of the switch (%NULL if not found) * @nvm: Pointer to the NVM if the switch has one (%NULL otherwise) @@ -192,6 +193,7 @@ struct tb_switch { int cap_plug_events; int cap_vsec_tmu; int cap_lc; + int cap_lp; bool is_unplugged; u8 *drom; struct tb_nvm *nvm; @@ -972,6 +974,19 @@ static inline bool tb_switch_is_cl0s_enabled(const struct tb_switch *sw) return sw->clx == TB_CL0S; } +/** + * tb_switch_is_clx_supported() - Is CLx supported on this type of router + * @sw: The router to check CLx support for + */ +static inline bool tb_switch_is_clx_supported(const struct tb_switch *sw) +{ + return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw); +} + +int tb_switch_mask_clx_objections(struct tb_switch *sw); + +int tb_switch_pcie_l1_enable(struct tb_switch *sw); + int tb_wait_for_port(struct tb_port *port, bool wait_if_unplugged); int tb_port_add_nfc_credits(struct tb_port *port, int credits); int tb_port_clear_counter(struct tb_port *port, int counter); @@ -1065,6 +1080,7 @@ void tb_lc_unconfigure_port(struct tb_port *port); int tb_lc_configure_xdomain(struct tb_port *port); void tb_lc_unconfigure_xdomain(struct tb_port *port); int tb_lc_start_lane_initialization(struct tb_port *port); +bool tb_lc_is_clx_supported(struct tb_port *port); int tb_lc_set_wake(struct tb_switch *sw, unsigned int flags); int tb_lc_set_sleep(struct tb_switch *sw); bool tb_lc_lane_bonding_possible(struct tb_switch *sw); |