diff options
| -rw-r--r-- | Documentation/devicetree/bindings/usb/usb3503.txt | 5 | ||||
| -rw-r--r-- | drivers/usb/misc/usb3503.c | 14 |
2 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/usb3503.txt b/Documentation/devicetree/bindings/usb/usb3503.txt index 6813a715fc7..8c5be48b43c 100644 --- a/Documentation/devicetree/bindings/usb/usb3503.txt +++ b/Documentation/devicetree/bindings/usb/usb3503.txt @@ -4,6 +4,10 @@ Required properties: - compatible: Should be "smsc,usb3503". - reg: Specifies the i2c slave address, it should be 0x08. - connect-gpios: Should specify GPIO for connect. +- disabled-ports: Should specify the ports unused. + '1' or '2' or '3' are availe for this property to describe the port + number. 1~3 property values are possible to be desribed. + Do not describe this property if all ports have to be enabled. - intn-gpios: Should specify GPIO for interrupt. - reset-gpios: Should specify GPIO for reset. - initial-mode: Should specify initial mode. @@ -14,6 +18,7 @@ Examples: compatible = "smsc,usb3503"; reg = <0x08>; connect-gpios = <&gpx3 0 1>; + disabled-ports = <2 3>; intn-gpios = <&gpx3 4 1>; reset-gpios = <&gpx3 5 1>; initial-mode = <1>; diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index ab24bb34597..1908ec65c55 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -186,6 +186,8 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) struct usb3503 *hub; int err = -ENOMEM; u32 mode = USB3503_MODE_UNKNOWN; + const u32 *property; + int len; hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); if (!hub) { @@ -203,6 +205,18 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) hub->gpio_reset = pdata->gpio_reset; hub->mode = pdata->initial_mode; } else if (np) { + hub->port_off_mask = 0; + + property = of_get_property(np, "disabled-ports", &len); + if (property && (len / sizeof(u32)) > 0) { + int i; + for (i = 0; i < len / sizeof(u32); i++) { + u32 port = be32_to_cpu(property[i]); + if ((1 <= port) && (port <= 3)) + hub->port_off_mask |= (1 << port); + } + } + hub->gpio_intn = of_get_named_gpio(np, "connect-gpios", 0); if (hub->gpio_intn == -EPROBE_DEFER) return -EPROBE_DEFER; |