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Subject[PATCH 2/3] phy: rockchip-inno-usb2: add otg mux irq quirk
Date
The otg-id/otg-bvalid/linestate irqs are multiplexed to one irq in
otg-port on some Rockchip SoC (e.g RV1108), this patch add a quirk
to support this mux irq feature.

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
---
.../bindings/phy/phy-rockchip-inno-usb2.txt | 5 ++
drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 68 +++++++++++++++++-----
2 files changed, 60 insertions(+), 13 deletions(-)

diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
index ddf868a..d49572b 100644
--- a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
+++ b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
@@ -22,6 +22,8 @@ Optional properties:
register files".
- rockchip,companion_grf_quirk : when set driver will request
"rockchip,usbgrf" phandle as one companion-grf.
+ - rockchip,otg_mux_irq_quirk: set if otg-id/otg-bvalid/linestate irqs
+ are multiplexed to one irq in otg-port on some SoCs.

Required nodes : a sub-node is required for each port the phy provides.
The sub-node name is used to identify host or otg port,
@@ -36,6 +38,9 @@ Required properties (port (child) node):
* "otg-id" : for the otg id interrupt.
* "otg-bvalid" : for the otg vbus interrupt.
* "linestate" : for the host/otg linestate interrupt.
+ * "otg-mux" : otg-port interrupt, which multiplex otg-id/otg-bvalid/
+ linestate irqs to one irq. Should specify if
+ rockchip,otg_mux_irq_quirk property is set.

Optional properties:
- phy-supply : phandle to a regulator that provides power to VBUS.
diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 669e5f6..925919c 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;
@@ -228,6 +231,7 @@ struct rockchip_usb2phy {
const struct rockchip_usb2phy_cfg *phy_cfg;
struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS];
unsigned int companion_grf_quirk:1;
+ unsigned int otg_mux_irq_quirk:1;
};

static inline struct regmap *get_reg_base(struct rockchip_usb2phy *rphy)
@@ -935,6 +939,17 @@ 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)
@@ -1011,20 +1026,44 @@ 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;
- }
+ if (rphy->otg_mux_irq_quirk) {
+ rport->otg_mux_irq = of_irq_get_byname(child_np, "otg-mux");
+ if (rport->otg_mux_irq < 0) {
+ dev_err(rphy->dev, "no otg-mux irq provided\n");
+ ret = rport->otg_mux_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->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;
+ }
}

if (!IS_ERR(rphy->edev)) {
@@ -1081,6 +1120,9 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
rphy->usbgrf = NULL;
}

+ rphy->otg_mux_irq_quirk =
+ device_property_read_bool(dev, "rockchip,otg_mux_irq_quirk");
+
if (of_property_read_u32(np, "reg", &reg)) {
dev_err(dev, "the reg property is not assigned in %s node\n",
np->name);
--
2.0.0

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