USB: cdc: add serial-state defines

Add defines for the serial-state bitmap values from section 6.3.5
SerialState of the CDC specification version 1.1.

Note that the bTxCarrier and bRxCarrier bits have been named after their
RS-232 signal equivalents DSR and DCD.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20220725075841.1187-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/uapi/linux/usb/cdc.h b/include/uapi/linux/usb/cdc.h
index 372c814..78caa9b 100644 (file)
--- a/include/uapi/linux/usb/cdc.h
+++ b/include/uapi/linux/usb/cdc.h
@@ -306,6 +306,15 @@ struct usb_cdc_notification {
        __le16  wLength;
 } __attribute__ ((packed));
 
+/* UART State Bitmap Values from 6.3.5 SerialState */
+#define USB_CDC_SERIAL_STATE_DCD               (1 << 0)
+#define USB_CDC_SERIAL_STATE_DSR               (1 << 1)
+#define USB_CDC_SERIAL_STATE_BREAK             (1 << 2)
+#define USB_CDC_SERIAL_STATE_RING_SIGNAL       (1 << 3)
+#define USB_CDC_SERIAL_STATE_FRAMING           (1 << 4)
+#define USB_CDC_SERIAL_STATE_PARITY            (1 << 5)
+#define USB_CDC_SERIAL_STATE_OVERRUN           (1 << 6)
+
 struct usb_cdc_speed_change {
        __le32  DLBitRRate;     /* contains the downlink bit rate (IN pipe) */
        __le32  ULBitRate;      /* contains the uplink bit rate (OUT pipe) */