Messages in this thread Patch in this message | | | From | "Angus Ainslie (Purism)" <> | Subject | [PATCH v2 1/1] usb: typec: tcpci: Clear the fault status register | Date | Tue, 7 May 2019 18:27:49 -0600 |
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If the fault status register doesn't get cleared then the ptn5110 interrupt gets stuck on. As the fault register gets set everytime the ptn5110 powers on the interrupt is always stuck.
Fixes: fault status register stuck Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca> --- drivers/usb/typec/tcpm/tcpci.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index c1f7073a56de..a5746657b190 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -463,6 +463,17 @@ irqreturn_t tcpci_irq(struct tcpci *tcpci) else if (status & TCPC_ALERT_TX_FAILED) tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED); + if (status & TCPC_ALERT_FAULT) { + u16 fault_status; + + tcpci_read16(tcpci, TCPC_FAULT_STATUS, &fault_status); + + dev_warn(tcpci->dev, "FAULT ALERT status 0x%x\n", fault_status); + + /* clear the fault status */ + tcpci_write16(tcpci, TCPC_FAULT_STATUS, fault_status); + } + return IRQ_HANDLED; } EXPORT_SYMBOL_GPL(tcpci_irq); -- 2.17.1
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