| Message ID | 20231015035838.2207567-1-badhri@google.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v2] usb: typec: tcpm: Fix sink caps op current check | expand |
On Sun, Oct 15, 2023 at 03:58:38AM +0000, Badhri Jagan Sridharan wrote: > TCPM checks for sink caps operational current even when PD is disabled. > This incorrectly sets tcpm_set_charge() when PD is disabled. > Check for sink caps only when PD is enabled. > > [ 97.572342] Start toggling > [ 97.578949] CC1: 0 -> 0, CC2: 0 -> 0 [state TOGGLING, polarity 0, disconnected] > [ 99.571648] CC1: 0 -> 0, CC2: 0 -> 4 [state TOGGLING, polarity 0, connected] > [ 99.571658] state change TOGGLING -> SNK_ATTACH_WAIT [rev3 NONE_AMS] > [ 99.571673] pending state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED @ 170 ms [rev3 NONE_AMS] > [ 99.741778] state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED [delayed 170 ms] > [ 99.789283] CC1: 0 -> 0, CC2: 4 -> 5 [state SNK_DEBOUNCED, polarity 0, connected] > [ 99.789306] state change SNK_DEBOUNCED -> SNK_DEBOUNCED [rev3 NONE_AMS] > [ 99.903584] VBUS on > [ 99.903591] state change SNK_DEBOUNCED -> SNK_ATTACHED [rev3 NONE_AMS] > [ 99.903600] polarity 1 > [ 99.910155] enable vbus discharge ret:0 > [ 99.910160] Requesting mux state 1, usb-role 2, orientation 2 > [ 99.946791] state change SNK_ATTACHED -> SNK_STARTUP [rev3 NONE_AMS] > [ 99.946798] state change SNK_STARTUP -> SNK_DISCOVERY [rev3 NONE_AMS] > [ 99.946800] Setting voltage/current limit 5000 mV 500 mA > [ 99.946803] vbus=0 charge:=1 > [ 100.027139] state change SNK_DISCOVERY -> SNK_READY [rev3 NONE_AMS] > [ 100.027145] Setting voltage/current limit 5000 mV 3000 mA > [ 100.466830] VBUS on > > Cc: stable@vger.kernel.org > Fixes: 34fde9ec08a3 ("FROMGIT: usb: typec: tcpm: not sink vbus if operational current is 0mA") > Signed-off-by: Badhri Jagan Sridharan <badhri@google.com> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > Changes since v1: > * Fix commit title and description to address comments from Guenter Roeck > --- > drivers/usb/typec/tcpm/tcpm.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c > index 6e843c511b85..994493481c24 100644 > --- a/drivers/usb/typec/tcpm/tcpm.c > +++ b/drivers/usb/typec/tcpm/tcpm.c > @@ -4268,7 +4268,8 @@ static void run_state_machine(struct tcpm_port *port) > current_lim = PD_P_SNK_STDBY_MW / 5; > tcpm_set_current_limit(port, current_lim, 5000); > /* Not sink vbus if operational current is 0mA */ > - tcpm_set_charge(port, !!pdo_max_current(port->snk_pdo[0])); > + tcpm_set_charge(port, port->pd_supported ? > + !!pdo_max_current(port->snk_pdo[0]) : true); > > if (!port->pd_supported) > tcpm_set_state(port, SNK_READY, 0); > > base-commit: 1034cc423f1b4a7a9a56d310ca980fcd2753e11d > -- > 2.42.0.655.g421f12c284-goog
On Sun, Oct 15, 2023 at 03:58:38AM +0000, Badhri Jagan Sridharan wrote: > TCPM checks for sink caps operational current even when PD is disabled. > This incorrectly sets tcpm_set_charge() when PD is disabled. > Check for sink caps only when PD is enabled. > > [ 97.572342] Start toggling > [ 97.578949] CC1: 0 -> 0, CC2: 0 -> 0 [state TOGGLING, polarity 0, disconnected] > [ 99.571648] CC1: 0 -> 0, CC2: 0 -> 4 [state TOGGLING, polarity 0, connected] > [ 99.571658] state change TOGGLING -> SNK_ATTACH_WAIT [rev3 NONE_AMS] > [ 99.571673] pending state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED @ 170 ms [rev3 NONE_AMS] > [ 99.741778] state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED [delayed 170 ms] > [ 99.789283] CC1: 0 -> 0, CC2: 4 -> 5 [state SNK_DEBOUNCED, polarity 0, connected] > [ 99.789306] state change SNK_DEBOUNCED -> SNK_DEBOUNCED [rev3 NONE_AMS] > [ 99.903584] VBUS on > [ 99.903591] state change SNK_DEBOUNCED -> SNK_ATTACHED [rev3 NONE_AMS] > [ 99.903600] polarity 1 > [ 99.910155] enable vbus discharge ret:0 > [ 99.910160] Requesting mux state 1, usb-role 2, orientation 2 > [ 99.946791] state change SNK_ATTACHED -> SNK_STARTUP [rev3 NONE_AMS] > [ 99.946798] state change SNK_STARTUP -> SNK_DISCOVERY [rev3 NONE_AMS] > [ 99.946800] Setting voltage/current limit 5000 mV 500 mA > [ 99.946803] vbus=0 charge:=1 > [ 100.027139] state change SNK_DISCOVERY -> SNK_READY [rev3 NONE_AMS] > [ 100.027145] Setting voltage/current limit 5000 mV 3000 mA > [ 100.466830] VBUS on > > Cc: stable@vger.kernel.org > Fixes: 34fde9ec08a3 ("FROMGIT: usb: typec: tcpm: not sink vbus if operational current is 0mA") This is obviously not a valid git id in Linus's tree, and our tools reject it :( thanks, greg k-h
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 6e843c511b85..994493481c24 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4268,7 +4268,8 @@ static void run_state_machine(struct tcpm_port *port) current_lim = PD_P_SNK_STDBY_MW / 5; tcpm_set_current_limit(port, current_lim, 5000); /* Not sink vbus if operational current is 0mA */ - tcpm_set_charge(port, !!pdo_max_current(port->snk_pdo[0])); + tcpm_set_charge(port, port->pd_supported ? + !!pdo_max_current(port->snk_pdo[0]) : true); if (!port->pd_supported) tcpm_set_state(port, SNK_READY, 0);
TCPM checks for sink caps operational current even when PD is disabled. This incorrectly sets tcpm_set_charge() when PD is disabled. Check for sink caps only when PD is enabled. [ 97.572342] Start toggling [ 97.578949] CC1: 0 -> 0, CC2: 0 -> 0 [state TOGGLING, polarity 0, disconnected] [ 99.571648] CC1: 0 -> 0, CC2: 0 -> 4 [state TOGGLING, polarity 0, connected] [ 99.571658] state change TOGGLING -> SNK_ATTACH_WAIT [rev3 NONE_AMS] [ 99.571673] pending state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED @ 170 ms [rev3 NONE_AMS] [ 99.741778] state change SNK_ATTACH_WAIT -> SNK_DEBOUNCED [delayed 170 ms] [ 99.789283] CC1: 0 -> 0, CC2: 4 -> 5 [state SNK_DEBOUNCED, polarity 0, connected] [ 99.789306] state change SNK_DEBOUNCED -> SNK_DEBOUNCED [rev3 NONE_AMS] [ 99.903584] VBUS on [ 99.903591] state change SNK_DEBOUNCED -> SNK_ATTACHED [rev3 NONE_AMS] [ 99.903600] polarity 1 [ 99.910155] enable vbus discharge ret:0 [ 99.910160] Requesting mux state 1, usb-role 2, orientation 2 [ 99.946791] state change SNK_ATTACHED -> SNK_STARTUP [rev3 NONE_AMS] [ 99.946798] state change SNK_STARTUP -> SNK_DISCOVERY [rev3 NONE_AMS] [ 99.946800] Setting voltage/current limit 5000 mV 500 mA [ 99.946803] vbus=0 charge:=1 [ 100.027139] state change SNK_DISCOVERY -> SNK_READY [rev3 NONE_AMS] [ 100.027145] Setting voltage/current limit 5000 mV 3000 mA [ 100.466830] VBUS on Cc: stable@vger.kernel.org Fixes: 34fde9ec08a3 ("FROMGIT: usb: typec: tcpm: not sink vbus if operational current is 0mA") Signed-off-by: Badhri Jagan Sridharan <badhri@google.com> --- Changes since v1: * Fix commit title and description to address comments from Guenter Roeck --- drivers/usb/typec/tcpm/tcpm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) base-commit: 1034cc423f1b4a7a9a56d310ca980fcd2753e11d