diff options
| -rw-r--r-- | drivers/usb/serial/pl2303.c | 50 |
1 files changed, 42 insertions, 8 deletions
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index db840b471adb..42dcc3cfb449 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -174,8 +174,11 @@ static void pl2303_set_break(struct usb_serial_port *port, bool enable); enum pl2303_type { TYPE_01, /* Type 0 and 1 (difference unknown) */ - TYPE_HX, /* HX version of the pl2303 chip */ - TYPE_HXN, /* HXN version of the pl2303 chip */ + TYPE_HX, + TYPE_TA, + TYPE_TB, + TYPE_HXD, + TYPE_HXN, TYPE_COUNT }; @@ -206,6 +209,15 @@ static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = { .no_autoxonxoff = true, }, [TYPE_HX] = { + .max_baud_rate = 6000000, + }, + [TYPE_TA] = { + .max_baud_rate = 6000000, + }, + [TYPE_TB] = { + .max_baud_rate = 12000000, + }, + [TYPE_HXD] = { .max_baud_rate = 12000000, }, [TYPE_HXN] = { @@ -362,9 +374,10 @@ static int pl2303_calc_num_ports(struct usb_serial *serial, return 1; } -static enum pl2303_type pl2303_detect_type(struct usb_serial *serial) +static int pl2303_detect_type(struct usb_serial *serial) { struct usb_device_descriptor *desc = &serial->dev->descriptor; + u16 bcdDevice, bcdUSB; int ret; u8 buf; @@ -391,7 +404,24 @@ static enum pl2303_type pl2303_detect_type(struct usb_serial *serial) if (ret) return TYPE_HXN; - return TYPE_HX; + bcdDevice = le16_to_cpu(desc->bcdDevice); + bcdUSB = le16_to_cpu(desc->bcdUSB); + + switch (bcdDevice) { + case 0x300: + if (bcdUSB == 0x200) + return TYPE_TA; + + return TYPE_HX; + case 0x400: + return TYPE_HXD; + case 0x500: + return TYPE_TB; + } + + dev_err(&serial->interface->dev, + "unknown device type, please report to linux-usb@vger.kernel.org\n"); + return -ENODEV; } static int pl2303_startup(struct usb_serial *serial) @@ -399,15 +429,19 @@ static int pl2303_startup(struct usb_serial *serial) struct pl2303_serial_private *spriv; enum pl2303_type type; unsigned char *buf; + int ret; + + ret = pl2303_detect_type(serial); + if (ret < 0) + return ret; + + type = ret; + dev_dbg(&serial->interface->dev, "device type: %d\n", type); spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); if (!spriv) return -ENOMEM; - type = pl2303_detect_type(serial); - - dev_dbg(&serial->interface->dev, "device type: %d\n", type); - spriv->type = &pl2303_type_data[type]; spriv->quirks = (unsigned long)usb_get_serial_data(serial); spriv->quirks |= spriv->type->quirks; |