Commit 85e04792 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman

USB: provide support for the HX version of pl2303 chips

Thanks to Gordon Elam <gbe@shoremicro.com> for the information needed
to do this.
Signed-off-by: default avatarGreg Kroah-Hartman <greg@kroah.com>
parent 6941c6c5
......@@ -62,7 +62,7 @@
/*
* Version Information
*/
#define DRIVER_VERSION "v0.10"
#define DRIVER_VERSION "v0.11"
#define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver"
......@@ -172,20 +172,38 @@ static struct usb_serial_device_type pl2303_device = {
.shutdown = pl2303_shutdown,
};
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 */
};
struct pl2303_private {
spinlock_t lock;
wait_queue_head_t delta_msr_wait;
u8 line_control;
u8 line_status;
u8 termios_initialized;
enum pl2303_type type;
};
static int pl2303_startup (struct usb_serial *serial)
{
struct pl2303_private *priv;
enum pl2303_type type = type_0;
int i;
if (serial->dev->descriptor.bDeviceClass == 0x02)
type = type_0;
else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
type = HX;
else if (serial->dev->descriptor.bDeviceClass == 0x00)
type = type_1;
else if (serial->dev->descriptor.bDeviceClass == 0xFF)
type = type_1;
dbg("device type: %d", type);
for (i = 0; i < serial->num_ports; ++i) {
priv = kmalloc (sizeof (struct pl2303_private), GFP_KERNEL);
if (!priv)
......@@ -193,6 +211,7 @@ static int pl2303_startup (struct usb_serial *serial)
memset (priv, 0x00, sizeof (struct pl2303_private));
spin_lock_init(&priv->lock);
init_waitqueue_head(&priv->delta_msr_wait);
priv->type = type;
usb_set_serial_port_data(serial->port[i], priv);
}
return 0;
......@@ -395,20 +414,27 @@ static void pl2303_set_termios (struct usb_serial_port *port, struct termios *ol
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
if (cflag & CRTSCTS) {
i = usb_control_msg (serial->dev, usb_sndctrlpipe (serial->dev, 0),
VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
0x0, 0x41, NULL, 0, 100);
dbg ("0x40:0x1:0x0:0x41 %d", i);
__u16 index;
if (priv->type == HX)
index = 0x61;
else
index = 0x41;
i = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
VENDOR_WRITE_REQUEST,
VENDOR_WRITE_REQUEST_TYPE,
0x0, index, NULL, 0, 100);
dbg ("0x40:0x1:0x0:0x%x %d", index, i);
}
kfree (buf);
}
static int pl2303_open (struct usb_serial_port *port, struct file *filp)
{
struct termios tmp_termios;
struct usb_serial *serial = port->serial;
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned char *buf;
int result;
......@@ -439,6 +465,18 @@ static int pl2303_open (struct usb_serial_port *port, struct file *filp)
SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 1);
FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0);
FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0);
SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0, 1);
SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 1, 0);
if (priv->type == HX) {
/* HX chip */
SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x44);
/* reset upstream data pipes */
SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 8, 0);
SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 9, 0);
} else {
SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x24);
}
kfree(buf);
......
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