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usb: typec: tcpci: Request IRQ with IRQF_SHARED
Under resource constraints, this interrupt may use other interrupt line or this interrupt line may be shared with other devices as long as they meet the sharing requirements. Besides, This irq flag will not cause other side effect if tcpci driver is the only user. Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20221214022334.2520677-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 6 additions and 2 deletions
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@ -33,6 +33,7 @@ struct tcpci {
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struct tcpm_port *port;
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struct regmap *regmap;
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unsigned int alert_mask;
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bool controls_vbus;
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@ -632,6 +633,9 @@ static int tcpci_init(struct tcpc_dev *tcpc)
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if (ret < 0)
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return ret;
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}
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tcpci->alert_mask = reg;
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return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg);
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}
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@ -715,7 +719,7 @@ irqreturn_t tcpci_irq(struct tcpci *tcpci)
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else if (status & TCPC_ALERT_TX_FAILED)
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tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED);
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return IRQ_HANDLED;
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return IRQ_RETVAL(status & tcpci->alert_mask);
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}
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EXPORT_SYMBOL_GPL(tcpci_irq);
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@ -838,7 +842,7 @@ static int tcpci_probe(struct i2c_client *client)
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err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
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_tcpci_irq,
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IRQF_ONESHOT | IRQF_TRIGGER_LOW,
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IRQF_SHARED | IRQF_ONESHOT | IRQF_TRIGGER_LOW,
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dev_name(&client->dev), chip);
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if (err < 0) {
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tcpci_unregister_port(chip->tcpci);
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