From 4db699a01dfb9dc77759fad3484d92456666ab83 Mon Sep 17 00:00:00 2001 From: Peter Geis Date: Tue, 27 Jul 2021 14:55:04 -0400 Subject: [PATCH 428/478] phy: phy-rockchip-inno-usb2: support muxed interrupts The rk3568 usb2phy has a single muxed interrupt that handles all interrupts. Allow the driver to plug in only a single interrupt as necessary. Signed-off-by: Peter Geis --- drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 168 +++++++++++++----- 1 file changed, 119 insertions(+), 49 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c index 9df556304dbd..7cd842e0187e 100644 --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c @@ -204,6 +204,7 @@ struct rockchip_usb2phy_port { * @dcd_retries: The retry count used to track Data contact * detection process. * @edev: extcon device for notification registration + * @irq: muxed interrupt for single irq configuration * @phy_cfg: phy register configuration, assigned by driver data. * @ports: phy port instance. */ @@ -218,6 +219,7 @@ struct rockchip_usb2phy { enum power_supply_type chg_type; u8 dcd_retries; struct extcon_dev *edev; + int irq; const struct rockchip_usb2phy_cfg *phy_cfg; struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS]; }; @@ -934,6 +936,102 @@ static irqreturn_t rockchip_usb2phy_otg_mux_irq(int irq, void *data) return IRQ_NONE; } +static irqreturn_t rockchip_usb2phy_irq(int irq, void *data) +{ + struct rockchip_usb2phy *rphy = data; + struct rockchip_usb2phy_port *rport; + irqreturn_t ret = IRQ_NONE; + unsigned int index; + + for (index = 0; index < rphy->phy_cfg->num_ports; index++) { + rport = &rphy->ports[index]; + if (!rport->phy) + continue; + + /* Handle linestate irq for both otg port and host port */ + ret = rockchip_usb2phy_linestate_irq(irq, rport); + } + + return ret; +} + +static int rockchip_usb2phy_port_irq_init(struct rockchip_usb2phy *rphy, + struct rockchip_usb2phy_port *rport, + struct device_node *child_np) +{ + int ret; + + /* + * If the usb2 phy used combined irq for otg and host port, + * don't need to init otg and host port irq separately. + */ + if (rphy->irq > 0) + return 0; + + switch (rport->port_id) { + case USB2PHY_PORT_HOST: + rport->ls_irq = of_irq_get_byname(child_np, "linestate"); + if (rport->ls_irq < 0) { + dev_err(rphy->dev, "no linestate irq provided\n"); + return rport->ls_irq; + } + + ret = devm_request_threaded_irq(rphy->dev, rport->ls_irq, NULL, + rockchip_usb2phy_linestate_irq, + IRQF_ONESHOT, + "rockchip_usb2phy", rport); + if (ret) { + dev_err(rphy->dev, "failed to request linestate irq handle\n"); + return ret; + } + break; + case USB2PHY_PORT_OTG: + /* + * Some SoCs use one interrupt with otg-id/otg-bvalid/linestate + * interrupts muxed together, so probe the otg-mux interrupt first, + * if not found, then look for the regular interrupts one by one. + */ + rport->otg_mux_irq = of_irq_get_byname(child_np, "otg-mux"); + if (rport->otg_mux_irq > 0) { + ret = devm_request_threaded_irq(rphy->dev, rport->otg_mux_irq, + NULL, + rockchip_usb2phy_otg_mux_irq, + IRQF_ONESHOT, + "rockchip_usb2phy_otg", + rport); + if (ret) { + dev_err(rphy->dev, + "failed to request otg-mux irq handle\n"); + return ret; + } + } else { + rport->bvalid_irq = of_irq_get_byname(child_np, "otg-bvalid"); + if (rport->bvalid_irq < 0) { + dev_err(rphy->dev, "no vbus valid irq provided\n"); + ret = rport->bvalid_irq; + return ret; + } + + ret = devm_request_threaded_irq(rphy->dev, rport->bvalid_irq, + NULL, + rockchip_usb2phy_bvalid_irq, + IRQF_ONESHOT, + "rockchip_usb2phy_bvalid", + rport); + if (ret) { + dev_err(rphy->dev, + "failed to request otg-bvalid irq handle\n"); + return ret; + } + } + break; + default: + return -EINVAL; + } + + return 0; +} + static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy, struct rockchip_usb2phy_port *rport, struct device_node *child_np) @@ -947,18 +1045,9 @@ static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy, mutex_init(&rport->mutex); INIT_DELAYED_WORK(&rport->sm_work, rockchip_usb2phy_sm_work); - rport->ls_irq = of_irq_get_byname(child_np, "linestate"); - if (rport->ls_irq < 0) { - dev_err(rphy->dev, "no linestate irq provided\n"); - return rport->ls_irq; - } - - ret = devm_request_threaded_irq(rphy->dev, rport->ls_irq, NULL, - rockchip_usb2phy_linestate_irq, - IRQF_ONESHOT, - "rockchip_usb2phy", rport); + ret = rockchip_usb2phy_port_irq_init(rphy, rport, child_np); if (ret) { - dev_err(rphy->dev, "failed to request linestate irq handle\n"); + dev_err(rphy->dev, "failed to setup host irq\n"); return ret; } @@ -1007,44 +1096,10 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy, INIT_DELAYED_WORK(&rport->chg_work, rockchip_chg_detect_work); INIT_DELAYED_WORK(&rport->otg_sm_work, rockchip_usb2phy_otg_sm_work); - /* - * Some SoCs use one interrupt with otg-id/otg-bvalid/linestate - * interrupts muxed together, so probe the otg-mux interrupt first, - * if not found, then look for the regular interrupts one by one. - */ - rport->otg_mux_irq = of_irq_get_byname(child_np, "otg-mux"); - if (rport->otg_mux_irq > 0) { - ret = devm_request_threaded_irq(rphy->dev, rport->otg_mux_irq, - NULL, - rockchip_usb2phy_otg_mux_irq, - IRQF_ONESHOT, - "rockchip_usb2phy_otg", - rport); - if (ret) { - dev_err(rphy->dev, - "failed to request otg-mux irq handle\n"); - goto out; - } - } else { - rport->bvalid_irq = of_irq_get_byname(child_np, "otg-bvalid"); - if (rport->bvalid_irq < 0) { - dev_err(rphy->dev, "no vbus valid irq provided\n"); - ret = rport->bvalid_irq; - goto out; - } - - ret = devm_request_threaded_irq(rphy->dev, rport->bvalid_irq, - NULL, - rockchip_usb2phy_bvalid_irq, - IRQF_ONESHOT, - "rockchip_usb2phy_bvalid", - rport); - if (ret) { - dev_err(rphy->dev, - "failed to request otg-bvalid irq handle\n"); - goto out; - } - } + ret = rockchip_usb2phy_port_irq_init(rphy, rport, child_np); + if (ret) { + dev_err(rphy->dev, "failed to init irq for host port\n"); + goto out; if (!IS_ERR(rphy->edev)) { rport->event_nb.notifier_call = rockchip_otg_event; @@ -1124,6 +1179,7 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev) phy_cfgs = match->data; rphy->chg_state = USB_CHG_STATE_UNDEFINED; rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; + rphy->irq = platform_get_irq(pdev, 0); platform_set_drvdata(pdev, rphy); ret = rockchip_usb2phy_extcon_register(rphy); @@ -1203,6 +1259,20 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev) } provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + if (rphy->irq > 0) { + ret = devm_request_threaded_irq(rphy->dev, rphy->irq, NULL, + rockchip_usb2phy_irq, + IRQF_ONESHOT, + "rockchip_usb2phy", + rphy); + if (ret) { + dev_err(rphy->dev, + "failed to request usb2phy irq handle\n"); + goto put_child; + } + } + return PTR_ERR_OR_ZERO(provider); put_child: -- 2.35.3