| Message ID | 20230601-topic-sm8550-upstream-type-c-v3-2-22c9973012b6@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | arm64: qcom: add Type-C Altmode support | expand |
On Tue, Jun 13, 2023 at 09:55:55AM +0200, Neil Armstrong wrote: > On some Qcom SoCs, the Altmode event mode is set to 0xff when > the Type-C port is disconnected. > > Handle this specific mode and translate it as the SAFE mode. > > Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> FWIW: Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/soc/qcom/pmic_glink_altmode.c | 18 +++++++++++++++++- > 1 file changed, 17 insertions(+), 1 deletion(-) > > diff --git a/drivers/soc/qcom/pmic_glink_altmode.c b/drivers/soc/qcom/pmic_glink_altmode.c > index df48fbea4b68..007d308e2f15 100644 > --- a/drivers/soc/qcom/pmic_glink_altmode.c > +++ b/drivers/soc/qcom/pmic_glink_altmode.c > @@ -173,6 +173,20 @@ static void pmic_glink_altmode_enable_usb(struct pmic_glink_altmode *altmode, > dev_err(altmode->dev, "failed to switch mux to USB\n"); > } > > +static void pmic_glink_altmode_safe(struct pmic_glink_altmode *altmode, > + struct pmic_glink_altmode_port *port) > +{ > + int ret; > + > + port->state.alt = NULL; > + port->state.data = NULL; > + port->state.mode = TYPEC_STATE_SAFE; > + > + ret = typec_mux_set(port->typec_mux, &port->state); > + if (ret) > + dev_err(altmode->dev, "failed to switch mux to safe mode\n"); > +} > + > static void pmic_glink_altmode_worker(struct work_struct *work) > { > struct pmic_glink_altmode_port *alt_port = work_to_altmode_port(work); > @@ -180,7 +194,9 @@ static void pmic_glink_altmode_worker(struct work_struct *work) > > typec_switch_set(alt_port->typec_switch, alt_port->orientation); > > - if (alt_port->svid == USB_TYPEC_DP_SID) > + if (alt_port->svid == USB_TYPEC_DP_SID && alt_port->mode == 0xff) > + pmic_glink_altmode_safe(altmode, alt_port); > + else if (alt_port->svid == USB_TYPEC_DP_SID) > pmic_glink_altmode_enable_dp(altmode, alt_port, alt_port->mode, > alt_port->hpd_state, alt_port->hpd_irq); > else > > -- > 2.34.1
diff --git a/drivers/soc/qcom/pmic_glink_altmode.c b/drivers/soc/qcom/pmic_glink_altmode.c index df48fbea4b68..007d308e2f15 100644 --- a/drivers/soc/qcom/pmic_glink_altmode.c +++ b/drivers/soc/qcom/pmic_glink_altmode.c @@ -173,6 +173,20 @@ static void pmic_glink_altmode_enable_usb(struct pmic_glink_altmode *altmode, dev_err(altmode->dev, "failed to switch mux to USB\n"); } +static void pmic_glink_altmode_safe(struct pmic_glink_altmode *altmode, + struct pmic_glink_altmode_port *port) +{ + int ret; + + port->state.alt = NULL; + port->state.data = NULL; + port->state.mode = TYPEC_STATE_SAFE; + + ret = typec_mux_set(port->typec_mux, &port->state); + if (ret) + dev_err(altmode->dev, "failed to switch mux to safe mode\n"); +} + static void pmic_glink_altmode_worker(struct work_struct *work) { struct pmic_glink_altmode_port *alt_port = work_to_altmode_port(work); @@ -180,7 +194,9 @@ static void pmic_glink_altmode_worker(struct work_struct *work) typec_switch_set(alt_port->typec_switch, alt_port->orientation); - if (alt_port->svid == USB_TYPEC_DP_SID) + if (alt_port->svid == USB_TYPEC_DP_SID && alt_port->mode == 0xff) + pmic_glink_altmode_safe(altmode, alt_port); + else if (alt_port->svid == USB_TYPEC_DP_SID) pmic_glink_altmode_enable_dp(altmode, alt_port, alt_port->mode, alt_port->hpd_state, alt_port->hpd_irq); else
On some Qcom SoCs, the Altmode event mode is set to 0xff when the Type-C port is disconnected. Handle this specific mode and translate it as the SAFE mode. Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> --- drivers/soc/qcom/pmic_glink_altmode.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-)