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usb: typec: tcpci: Implement callback for apply_rc
APPLY RC is defined as ROLE_CONTROL.CC1 != ROLE_CONTROL.CC2 and
POWER_CONTROL.AutodischargeDisconnect is 0. When ROLE_CONTROL.CC1 ==
ROLE_CONTROL.CC2, set the other CC to OPEN.
Fixes: f321a02cae
("usb: typec: tcpm: Implement enabling Auto Discharge disconnect support")
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20210517192112.40934-4-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
59d4d06c8a
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1 changed files with 27 additions and 0 deletions
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@ -115,6 +115,32 @@ static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc)
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return 0;
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return 0;
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}
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}
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int tcpci_apply_rc(struct tcpc_dev *tcpc, enum typec_cc_status cc, enum typec_cc_polarity polarity)
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{
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struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
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unsigned int reg;
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int ret;
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ret = regmap_read(tcpci->regmap, TCPC_ROLE_CTRL, ®);
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if (ret < 0)
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return ret;
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/*
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* APPLY_RC state is when ROLE_CONTROL.CC1 != ROLE_CONTROL.CC2 and vbus autodischarge on
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* disconnect is disabled. Bail out when ROLE_CONTROL.CC1 != ROLE_CONTROL.CC2.
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*/
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if (((reg & (TCPC_ROLE_CTRL_CC2_MASK << TCPC_ROLE_CTRL_CC2_SHIFT)) >>
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TCPC_ROLE_CTRL_CC2_SHIFT) !=
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((reg & (TCPC_ROLE_CTRL_CC1_MASK << TCPC_ROLE_CTRL_CC1_SHIFT)) >>
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TCPC_ROLE_CTRL_CC1_SHIFT))
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return 0;
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return regmap_update_bits(tcpci->regmap, TCPC_ROLE_CTRL, polarity == TYPEC_POLARITY_CC1 ?
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TCPC_ROLE_CTRL_CC2_MASK << TCPC_ROLE_CTRL_CC2_SHIFT :
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TCPC_ROLE_CTRL_CC1_MASK << TCPC_ROLE_CTRL_CC1_SHIFT,
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TCPC_ROLE_CTRL_CC_OPEN);
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}
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static int tcpci_start_toggling(struct tcpc_dev *tcpc,
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static int tcpci_start_toggling(struct tcpc_dev *tcpc,
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enum typec_port_type port_type,
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enum typec_port_type port_type,
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enum typec_cc_status cc)
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enum typec_cc_status cc)
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@ -728,6 +754,7 @@ struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data)
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tcpci->tcpc.get_vbus = tcpci_get_vbus;
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tcpci->tcpc.get_vbus = tcpci_get_vbus;
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tcpci->tcpc.set_vbus = tcpci_set_vbus;
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tcpci->tcpc.set_vbus = tcpci_set_vbus;
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tcpci->tcpc.set_cc = tcpci_set_cc;
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tcpci->tcpc.set_cc = tcpci_set_cc;
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tcpci->tcpc.apply_rc = tcpci_apply_rc;
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tcpci->tcpc.get_cc = tcpci_get_cc;
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tcpci->tcpc.get_cc = tcpci_get_cc;
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tcpci->tcpc.set_polarity = tcpci_set_polarity;
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tcpci->tcpc.set_polarity = tcpci_set_polarity;
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tcpci->tcpc.set_vconn = tcpci_set_vconn;
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tcpci->tcpc.set_vconn = tcpci_set_vconn;
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