diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-06-25 15:10:01 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-11-01 14:31:59 +0300 |
| commit | f07a360813f6c551380dca8817d8eb5e7ab40a21 (patch) | |
| tree | 585e2ecadbb618d9473dd3bae5b8cc0620496f51 /drivers/thunderbolt | |
| parent | 1c9c5bc525b592e4b26cb5182d813e4b84bafa6e (diff) | |
| download | linux-f07a360813f6c551380dca8817d8eb5e7ab40a21.tar.bz2 | |
thunderbolt: Introduce tb_switch_is_icm()
We currently differentiate between SW CM (Software Connection Manager,
sometimes also called External Connection Manager) and ICM (Firmware
based Connection Manager, Internal Connection Manager) by looking
directly at the sw->config.enabled field which may be rather hard to
understand for the casual reader. For this reason introduce a wrapper
function with documentation that should make the intention more clear.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/lc.c | 4 | ||||
| -rw-r--r-- | drivers/thunderbolt/switch.c | 4 | ||||
| -rw-r--r-- | drivers/thunderbolt/tb.h | 14 |
3 files changed, 18 insertions, 4 deletions
diff --git a/drivers/thunderbolt/lc.c b/drivers/thunderbolt/lc.c index ae1e92611c3e..af38076088f6 100644 --- a/drivers/thunderbolt/lc.c +++ b/drivers/thunderbolt/lc.c @@ -94,7 +94,7 @@ int tb_lc_configure_link(struct tb_switch *sw) struct tb_port *up, *down; int ret; - if (!sw->config.enabled || !tb_route(sw)) + if (!tb_route(sw) || tb_switch_is_icm(sw)) return 0; up = tb_upstream_port(sw); @@ -124,7 +124,7 @@ void tb_lc_unconfigure_link(struct tb_switch *sw) { struct tb_port *up, *down; - if (sw->is_unplugged || !sw->config.enabled || !tb_route(sw)) + if (sw->is_unplugged || !tb_route(sw) || tb_switch_is_icm(sw)) return; up = tb_upstream_port(sw); diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index c498464875cf..d42fc0f8b060 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -986,7 +986,7 @@ static int tb_plug_events_active(struct tb_switch *sw, bool active) u32 data; int res; - if (!sw->config.enabled) + if (tb_switch_is_icm(sw)) return 0; sw->config.plug_events_delay = 0xff; @@ -1720,7 +1720,7 @@ static int tb_switch_add_dma_port(struct tb_switch *sw) } /* Root switch DMA port requires running firmware */ - if (!tb_route(sw) && sw->config.enabled) + if (!tb_route(sw) && !tb_switch_is_icm(sw)) return 0; sw->dma_port = dma_port_alloc(sw); diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 6407d529871d..1565af2e48cb 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -591,6 +591,20 @@ static inline bool tb_switch_is_fr(const struct tb_switch *sw) } } +/** + * tb_switch_is_icm() - Is the switch handled by ICM firmware + * @sw: Switch to check + * + * In case there is a need to differentiate whether ICM firmware or SW CM + * is handling @sw this function can be called. It is valid to call this + * after tb_switch_alloc() and tb_switch_configure() has been called + * (latter only for SW CM case). + */ +static inline bool tb_switch_is_icm(const struct tb_switch *sw) +{ + return !sw->config.enabled; +} + 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_set_initial_credits(struct tb_port *port, u32 credits); |