enum pl2303_type {
- type_0, /* don't know the difference between type 0 and */
- type_1, /* type 1, until someone from prolific tells us... */
- HX, /* HX version of the pl2303 chip */
+ type_0, /* H version ? */
+ type_1, /* H version ? */
+ HX_TA, /* HX(A) / X(A) / TA version */ /* TODO: improve */
+ HXD_EA_RA_SA, /* HXD / EA / RA / SA version */ /* TODO: improve */
+ TB, /* TB version */
};
+/*
+ * NOTE: don't know the difference between type 0 and type 1,
+ * until someone from Prolific tells us...
+ * TODO: distinguish between X/HX, TA and HXD, EA, RA, SA variants
+ */
struct pl2303_serial_private {
enum pl2303_type type;
type = type_0;
type_str = "type_0";
} else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) {
- type = HX;
- type_str = "X/HX";
+ /*
+ * NOTE: The bcdDevice version is the only difference between
+ * the device descriptors of the X/HX, HXD, EA, RA, SA, TA, TB
+ */
+ if (le16_to_cpu(serial->dev->descriptor.bcdDevice) == 0x300) {
+ type = HX_TA;
+ type_str = "X/HX/TA";
+ } else if (le16_to_cpu(serial->dev->descriptor.bcdDevice)
+ == 0x400) {
+ type = HXD_EA_RA_SA;
+ type_str = "HXD/EA/RA/SA";
+ } else if (le16_to_cpu(serial->dev->descriptor.bcdDevice)
+ == 0x500) {
+ type = TB;
+ type_str = "TB";
+ } else {
+ dev_info(&serial->interface->dev,
+ "unknown/unsupported device type\n");
+ kfree(spriv);
+ kfree(buf);
+ return -ENODEV;
+ }
} else if (serial->dev->descriptor.bDeviceClass == 0x00
|| serial->dev->descriptor.bDeviceClass == 0xFF) {
type = type_1;
pl2303_vendor_read(0x8383, 0, serial, buf);
pl2303_vendor_write(0, 1, serial);
pl2303_vendor_write(1, 0, serial);
- if (type == HX)
- pl2303_vendor_write(2, 0x44, serial);
- else
+ if (type == type_0 || type == type_1)
pl2303_vendor_write(2, 0x24, serial);
+ else
+ pl2303_vendor_write(2, 0x44, serial);
kfree(buf);
return 0;
const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600,
4800, 7200, 9600, 14400, 19200, 28800, 38400,
57600, 115200, 230400, 460800, 614400, 921600,
- 1228800, 2457600, 3000000, 6000000 };
+ 1228800, 2457600, 3000000, 6000000, 12000000 };
/*
- * NOTE: The PL2303HX (tested with rev. 3A) also supports the following
- * baud rates: 128000, 134400, 161280, 201600, 268800, 403200, 806400.
- * As long as we are not using this encoding method for them, there is
- * no point in complicating the code to support them.
+ * NOTE: With the exception of type_0/1 devices, the following
+ * additional baud rates are supported (tested with HX rev. 3A only):
+ * 110*, 56000*, 128000, 134400, 161280, 201600, 256000*, 268800,
+ * 403200, 806400. (*: not HX)
+ *
+ * Maximum values: HXD, TB: 12000000; HX, TA: 6000000;
+ * type_0+1: 1228800; RA: 921600; SA: 115200
+ *
+ * As long as we are not using this encoding method for anything else
+ * than the type_0+1 and HX chips, there is no point in complicating
+ * the code to support them.
*/
int i;
baud = baud_sup[i - 1];
else
baud = baud_sup[i];
- /* type_0, type_1 only support up to 1228800 baud */
- if (type != HX)
+ /* Respect the chip type specific baud rate limits */
+ /*
+ * FIXME: as long as we don't know how to distinguish between the
+ * HXD, EA, RA, and SA chip variants, allow the max. value of 12M.
+ */
+ if (type == HX_TA)
+ baud = min_t(int, baud, 6000000);
+ else if (type == type_0 || type == type_1)
baud = min_t(int, baud, 1228800);
/* Direct (standard) baud rate encoding method */
put_unaligned_le32(baud, buf);
* Baud rates smaller than the specified 75 baud are definitely working
* fine.
*/
- if (type == HX)
- baud = min_t(int, baud, 6000000 * 1.1);
- else
+ if (type == type_0 || type == type_1)
baud = min_t(int, baud, 1228800 * 1.1);
+ else if (type == HX_TA)
+ baud = min_t(int, baud, 6000000 * 1.1);
+ else if (type == HXD_EA_RA_SA)
+ /* HXD, EA: 12Mbps; RA: 1Mbps; SA: 115200 bps */
+ /*
+ * FIXME: as long as we don't know how to distinguish between
+ * these chip variants, allow the max. of these values
+ */
+ baud = min_t(int, baud, 12000000 * 1.1);
+ else if (type == TB)
+ baud = min_t(int, baud, 12000000 * 1.1);
/* Determine factors A and B */
A = 0;
B = 12000000 * 32 / baud; /* 12MHz */
* the device likely uses the same baud rate generator for both methods
* so that there is likley no difference.
*/
- if (type != HX)
+ if (type == type_0 || type == type_1)
baud = pl2303_baudrate_encode_direct(baud, type, buf);
else
baud = pl2303_baudrate_encode_divisor(baud, type, buf);
dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf);
if (C_CRTSCTS(tty)) {
- if (spriv->type == HX)
- pl2303_vendor_write(0x0, 0x61, serial);
- else
+ if (spriv->type == type_0 || spriv->type == type_1)
pl2303_vendor_write(0x0, 0x41, serial);
+ else
+ pl2303_vendor_write(0x0, 0x61, serial);
} else {
pl2303_vendor_write(0x0, 0x0, serial);
}
struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
int result;
- if (spriv->type != HX) {
+ if (spriv->type == type_0 || spriv->type == type_1) {
usb_clear_halt(serial->dev, port->write_urb->pipe);
usb_clear_halt(serial->dev, port->read_urb->pipe);
} else {
projects / deliverable / linux.git / blobdiff