diff options
| author | Frank Wang <frank.wang@rock-chips.com> | 2017-08-11 16:07:49 +0800 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2017-08-22 10:11:21 +0530 |
| commit | 0983e2abc8334a0fec1e93a47e712708acaf5ad2 (patch) | |
| tree | a3c4cc8fd208d111ca4897c168ec36a7adb2136c /drivers/phy | |
| parent | c7527e07f0550fa98a2a8190c30a1e5a6cab8f93 (diff) | |
| download | linux-0983e2abc8334a0fec1e93a47e712708acaf5ad2.tar.bz2 | |
phy: rockchip-inno-usb2: add support for otg-mux interrupt
The otg-id/otg-bvalid/linestate interrupts are multiplexed together
in otg-port on some Rockchip SoC (e.g RV1108), this patch add support
for it.
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 63 |
1 files changed, 50 insertions, 13 deletions
diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c index fb593ccb22d6..22b7b02a1b55 100644 --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c @@ -172,6 +172,8 @@ struct rockchip_usb2phy_cfg { * @vbus_attached: otg device vbus status. * @bvalid_irq: IRQ number assigned for vbus valid rise detection. * @ls_irq: IRQ number assigned for linestate detection. + * @otg_mux_irq: IRQ number which multiplex otg-id/otg-bvalid/linestate + * irqs to one irq in otg-port. * @mutex: for register updating in sm_work. * @chg_work: charge detect work. * @otg_sm_work: OTG state machine work. @@ -189,6 +191,7 @@ struct rockchip_usb2phy_port { bool vbus_attached; int bvalid_irq; int ls_irq; + int otg_mux_irq; struct mutex mutex; struct delayed_work chg_work; struct delayed_work otg_sm_work; @@ -934,6 +937,17 @@ static irqreturn_t rockchip_usb2phy_bvalid_irq(int irq, void *data) return IRQ_HANDLED; } +static irqreturn_t rockchip_usb2phy_otg_mux_irq(int irq, void *data) +{ + struct rockchip_usb2phy_port *rport = data; + struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); + + if (property_enabled(rphy->grf, &rport->port_cfg->bvalid_det_st)) + return rockchip_usb2phy_bvalid_irq(irq, data); + else + return IRQ_NONE; +} + static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy, struct rockchip_usb2phy_port *rport, struct device_node *child_np) @@ -1010,20 +1024,43 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy, rport->utmi_avalid = of_property_read_bool(child_np, "rockchip,utmi-avalid"); - 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; - } + /* + * 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 = 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; + } } if (!IS_ERR(rphy->edev)) { |