USB: iuu_phoenix: Add support for different baud rates.

Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
James Courtier-Dutton 2010-05-21 11:53:25 +01:00 коммит произвёл Greg Kroah-Hartman
Родитель 202380d913
Коммит 89b5439790
1 изменённых файлов: 41 добавлений и 13 удалений

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@ -1,6 +1,8 @@
/*
* Infinity Unlimited USB Phoenix driver
*
* Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
* Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
*
* Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
@ -40,7 +42,7 @@ static int debug;
/*
* Version Information
*/
#define DRIVER_VERSION "v0.11"
#define DRIVER_VERSION "v0.12"
#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
static const struct usb_device_id id_table[] = {
@ -81,6 +83,9 @@ struct iuu_private {
u8 *dbgbuf; /* debug buffer */
u8 len;
int vcc; /* vcc (either 3 or 5 V) */
u32 baud;
u32 boost;
u32 clk;
};
@ -157,13 +162,14 @@ static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
port->number, set, clear);
spin_lock_irqsave(&priv->lock, flags);
if (set & TIOCM_RTS)
priv->tiostatus = TIOCM_RTS;
if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) {
if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
dbg("%s TIOCMSET RESET called !!!", __func__);
priv->reset = 1;
}
if (set & TIOCM_RTS)
priv->tiostatus = TIOCM_RTS;
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
@ -851,20 +857,24 @@ static int iuu_uart_off(struct usb_serial_port *port)
return status;
}
static int iuu_uart_baud(struct usb_serial_port *port, u32 baud,
static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
u32 *actual, u8 parity)
{
int status;
u32 baud;
u8 *dataout;
u8 DataCount = 0;
u8 T1Frekvens = 0;
u8 T1reload = 0;
unsigned int T1FrekvensHZ = 0;
dbg("%s - enter baud_base=%d", __func__, baud_base);
dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL);
if (!dataout)
return -ENOMEM;
/*baud = (((priv->clk / 35) * baud_base) / 100000); */
baud = baud_base;
if (baud < 1200 || baud > 230400) {
kfree(dataout);
@ -948,15 +958,20 @@ static void iuu_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
const u32 supported_mask = CMSPAR|PARENB|PARODD;
struct iuu_private *priv = usb_get_serial_port_data(port);
unsigned int cflag = tty->termios->c_cflag;
int status;
u32 actual;
u32 parity;
int csize = CS7;
int baud = 9600; /* Fixed for the moment */
int baud;
u32 newval = cflag & supported_mask;
/* Just use the ospeed. ispeed should be the same. */
baud = tty->termios->c_ospeed;
dbg("%s - enter c_ospeed or baud=%d", __func__, baud);
/* compute the parity parameter */
parity = 0;
if (cflag & CMSPAR) { /* Using mark space */
@ -976,15 +991,15 @@ static void iuu_set_termios(struct tty_struct *tty,
/* set it */
status = iuu_uart_baud(port,
(clockmode == 2) ? 16457 : 9600 * boost / 100,
baud * priv->boost / 100,
&actual, parity);
/* set the termios value to the real one, so the user now what has
* changed. We support few fields so its easies to copy the old hw
* settings back over and then adjust them
*/
if (old_termios)
tty_termios_copy_hw(tty->termios, old_termios);
if (old_termios)
tty_termios_copy_hw(tty->termios, old_termios);
if (status != 0) /* Set failed - return old bits */
return;
/* Re-encode speed, parity and csize */
@ -1018,6 +1033,7 @@ static void iuu_close(struct usb_serial_port *port)
static void iuu_init_termios(struct tty_struct *tty)
{
dbg("%s - enter", __func__);
*(tty->termios) = tty_std_termios;
tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
| TIOCM_CTS | CSTOPB | PARENB;
@ -1033,10 +1049,16 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
struct usb_serial *serial = port->serial;
u8 *buf;
int result;
int baud;
u32 actual;
struct iuu_private *priv = usb_get_serial_port_data(port);
dbg("%s - port %d", __func__, port->number);
baud = tty->termios->c_ospeed;
tty->termios->c_ispeed = baud;
/* Re-encode speed */
tty_encode_baud_rate(tty, baud, baud);
dbg("%s - port %d, baud %d", __func__, port->number, baud);
usb_clear_halt(serial->dev, port->write_urb->pipe);
usb_clear_halt(serial->dev, port->read_urb->pipe);
@ -1071,23 +1093,29 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
iuu_uart_on(port);
if (boost < 100)
boost = 100;
priv->boost = boost;
priv->baud = baud;
switch (clockmode) {
case 2: /* 3.680 Mhz */
priv->clk = IUU_CLK_3680000;
iuu_clk(port, IUU_CLK_3680000 * boost / 100);
result =
iuu_uart_baud(port, 9600 * boost / 100, &actual,
iuu_uart_baud(port, baud * boost / 100, &actual,
IUU_PARITY_EVEN);
break;
case 3: /* 6.00 Mhz */
iuu_clk(port, IUU_CLK_6000000 * boost / 100);
priv->clk = IUU_CLK_6000000;
/* Ratio of 6000000 to 3500000 for baud 9600 */
result =
iuu_uart_baud(port, 16457 * boost / 100, &actual,
IUU_PARITY_EVEN);
break;
default: /* 3.579 Mhz */
iuu_clk(port, IUU_CLK_3579000 * boost / 100);
priv->clk = IUU_CLK_3579000;
result =
iuu_uart_baud(port, 9600 * boost / 100, &actual,
iuu_uart_baud(port, baud * boost / 100, &actual,
IUU_PARITY_EVEN);
}