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path: root/drivers/usb/serial/io_edgeport.c
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Diffstat (limited to 'drivers/usb/serial/io_edgeport.c')
-rw-r--r--drivers/usb/serial/io_edgeport.c175
1 files changed, 62 insertions, 113 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 2fd449bcfa3..29346d79df7 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -206,18 +206,18 @@ static void edge_bulk_out_data_callback (struct urb *urb);
static void edge_bulk_out_cmd_callback (struct urb *urb);
/* function prototypes for the usbserial callbacks */
-static int edge_open (struct usb_serial_port *port, struct file *filp);
-static void edge_close (struct usb_serial_port *port, struct file *filp);
-static int edge_write (struct usb_serial_port *port, const unsigned char *buf, int count);
-static int edge_write_room (struct usb_serial_port *port);
-static int edge_chars_in_buffer (struct usb_serial_port *port);
-static void edge_throttle (struct usb_serial_port *port);
-static void edge_unthrottle (struct usb_serial_port *port);
-static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios);
-static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
-static void edge_break (struct usb_serial_port *port, int break_state);
-static int edge_tiocmget (struct usb_serial_port *port, struct file *file);
-static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
+static int edge_open (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp);
+static void edge_close (struct tty_struct *tty, struct usb_serial_port *port, struct file *filp);
+static int edge_write (struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count);
+static int edge_write_room (struct tty_struct *tty);
+static int edge_chars_in_buffer (struct tty_struct *tty);
+static void edge_throttle (struct tty_struct *tty);
+static void edge_unthrottle (struct tty_struct *tty);
+static void edge_set_termios (struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios);
+static int edge_ioctl (struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
+static void edge_break (struct tty_struct *tty, int break_state);
+static int edge_tiocmget (struct tty_struct *tty, struct file *file);
+static int edge_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear);
static int edge_startup (struct usb_serial *serial);
static void edge_shutdown (struct usb_serial *serial);
@@ -233,7 +233,8 @@ static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8
static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param);
static int calc_baud_rate_divisor (int baud_rate, int *divisor);
static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate);
-static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios);
+static void change_port_settings (struct tty_struct *tty, struct edgeport_port *edge_port,
+ struct ktermios *old_termios);
static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
@@ -639,8 +640,8 @@ static void edge_interrupt_callback (struct urb *urb)
dbg("%s - txcredits for port%d = %d", __func__, portNumber, edge_port->txCredits);
/* tell the tty driver that something has changed */
- if (edge_port->port->tty)
- tty_wakeup(edge_port->port->tty);
+ if (edge_port->port->port.tty)
+ tty_wakeup(edge_port->port->port.tty);
// Since we have more credit, check if more data can be sent
send_more_port_data(edge_serial, edge_port);
@@ -737,7 +738,7 @@ static void edge_bulk_out_data_callback (struct urb *urb)
__func__, status);
}
- tty = edge_port->port->tty;
+ tty = edge_port->port->port.tty;
if (tty && edge_port->open) {
/* let the tty driver wakeup if it has a special write_wakeup function */
@@ -781,7 +782,7 @@ static void edge_bulk_out_cmd_callback (struct urb *urb)
}
/* Get pointer to tty */
- tty = edge_port->port->tty;
+ tty = edge_port->port->port.tty;
/* tell the tty driver that something has changed */
if (tty && edge_port->open)
@@ -803,7 +804,8 @@ static void edge_bulk_out_cmd_callback (struct urb *urb)
* If successful, we return 0
* Otherwise we return a negative error number.
*****************************************************************************/
-static int edge_open (struct usb_serial_port *port, struct file * filp)
+static int edge_open(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file * filp)
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
struct usb_serial *serial;
@@ -815,16 +817,15 @@ static int edge_open (struct usb_serial_port *port, struct file * filp)
if (edge_port == NULL)
return -ENODEV;
- if (port->tty)
- port->tty->low_latency = low_latency;
+ if (tty)
+ tty->low_latency = low_latency;
/* see if we've set up our endpoint info yet (can't set it up in edge_startup
as the structures were not set up at that time.) */
serial = port->serial;
edge_serial = usb_get_serial_data(serial);
- if (edge_serial == NULL) {
+ if (edge_serial == NULL)
return -ENODEV;
- }
if (edge_serial->interrupt_in_buffer == NULL) {
struct usb_serial_port *port0 = serial->port[0];
@@ -908,7 +909,7 @@ static int edge_open (struct usb_serial_port *port, struct file * filp)
if (!edge_port->txfifo.fifo) {
dbg("%s - no memory", __func__);
- edge_close (port, filp);
+ edge_close (tty, port, filp);
return -ENOMEM;
}
@@ -918,7 +919,7 @@ static int edge_open (struct usb_serial_port *port, struct file * filp)
if (!edge_port->write_urb) {
dbg("%s - no memory", __func__);
- edge_close (port, filp);
+ edge_close (tty, port, filp);
return -ENOMEM;
}
@@ -1038,7 +1039,8 @@ static void block_until_tx_empty (struct edgeport_port *edge_port)
* edge_close
* this function is called by the tty driver when a port is closed
*****************************************************************************/
-static void edge_close (struct usb_serial_port *port, struct file * filp)
+static void edge_close(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file * filp)
{
struct edgeport_serial *edge_serial;
struct edgeport_port *edge_port;
@@ -1106,7 +1108,8 @@ static void edge_close (struct usb_serial_port *port, struct file * filp)
* If successful, we return the number of bytes written, otherwise we return
* a negative error number.
*****************************************************************************/
-static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
+static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *data, int count)
{
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
struct TxFifo *fifo;
@@ -1308,8 +1311,9 @@ exit_send:
* (the txCredits),
* Otherwise we return a negative error number.
*****************************************************************************/
-static int edge_write_room (struct usb_serial_port *port)
+static int edge_write_room(struct tty_struct *tty)
{
+ struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
int room;
unsigned long flags;
@@ -1347,8 +1351,9 @@ static int edge_write_room (struct usb_serial_port *port)
* system,
* Otherwise we return a negative error number.
*****************************************************************************/
-static int edge_chars_in_buffer (struct usb_serial_port *port)
+static int edge_chars_in_buffer(struct tty_struct *tty)
{
+ struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
int num_chars;
unsigned long flags;
@@ -1381,10 +1386,10 @@ static int edge_chars_in_buffer (struct usb_serial_port *port)
* this function is called by the tty driver when it wants to stop the data
* being read from the port.
*****************************************************************************/
-static void edge_throttle (struct usb_serial_port *port)
+static void edge_throttle(struct tty_struct *tty)
{
+ struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct tty_struct *tty;
int status;
dbg("%s - port %d", __func__, port->number);
@@ -1397,16 +1402,10 @@ static void edge_throttle (struct usb_serial_port *port)
return;
}
- tty = port->tty;
- if (!tty) {
- dbg ("%s - no tty available", __func__);
- return;
- }
-
/* if we are implementing XON/XOFF, send the stop character */
if (I_IXOFF(tty)) {
unsigned char stop_char = STOP_CHAR(tty);
- status = edge_write (port, &stop_char, 1);
+ status = edge_write (tty, port, &stop_char, 1);
if (status <= 0) {
return;
}
@@ -1430,10 +1429,10 @@ static void edge_throttle (struct usb_serial_port *port)
* this function is called by the tty driver when it wants to resume the data
* being read from the port (called after SerialThrottle is called)
*****************************************************************************/
-static void edge_unthrottle (struct usb_serial_port *port)
+static void edge_unthrottle(struct tty_struct *tty)
{
+ struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct tty_struct *tty;
int status;
dbg("%s - port %d", __func__, port->number);
@@ -1446,31 +1445,18 @@ static void edge_unthrottle (struct usb_serial_port *port)
return;
}
- tty = port->tty;
- if (!tty) {
- dbg ("%s - no tty available", __func__);
- return;
- }
-
/* if we are implementing XON/XOFF, send the start character */
if (I_IXOFF(tty)) {
unsigned char start_char = START_CHAR(tty);
- status = edge_write (port, &start_char, 1);
- if (status <= 0) {
+ status = edge_write(tty, port, &start_char, 1);
+ if (status <= 0)
return;
- }
}
-
/* if we are implementing RTS/CTS, toggle that line */
if (tty->termios->c_cflag & CRTSCTS) {
edge_port->shadowMCR |= MCR_RTS;
- status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
- if (status != 0) {
- return;
- }
+ send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
}
-
- return;
}
@@ -1478,11 +1464,10 @@ static void edge_unthrottle (struct usb_serial_port *port)
* SerialSetTermios
* this function is called by the tty driver when it wants to change the termios structure
*****************************************************************************/
-static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios)
+static void edge_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old_termios)
{
- /* FIXME: This function appears unused ?? */
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct tty_struct *tty = port->tty;
unsigned int cflag;
cflag = tty->termios->c_cflag;
@@ -1502,9 +1487,7 @@ static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old
}
/* change the port settings to the new ones specified */
- change_port_settings (edge_port, old_termios);
-
- return;
+ change_port_settings(tty, edge_port, old_termios);
}
@@ -1536,25 +1519,9 @@ static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *va
return 0;
}
-static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value)
-{
- unsigned int result = 0;
- struct tty_struct *tty = edge_port->port->tty;
-
- if (!tty)
- return -ENOIOCTLCMD;
-
- result = tty->read_cnt;
-
- dbg("%s(%d) = %d", __func__, edge_port->port->number, result);
- if (copy_to_user(value, &result, sizeof(int)))
- return -EFAULT;
- //return 0;
- return -ENOIOCTLCMD;
-}
-
-static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
+static int edge_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear)
{
+ struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned int mcr;
@@ -1582,8 +1549,9 @@ static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsig
return 0;
}
-static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
+static int edge_tiocmget(struct tty_struct *tty, struct file *file)
{
+ struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
unsigned int result = 0;
unsigned int msr;
@@ -1624,9 +1592,6 @@ static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct
tmp.baud_base = 9600;
tmp.close_delay = 5*HZ;
tmp.closing_wait = 30*HZ;
-// tmp.custom_divisor = state->custom_divisor;
-// tmp.hub6 = state->hub6;
-// tmp.io_type = state->io_type;
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
return -EFAULT;
@@ -1639,8 +1604,10 @@ static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct
* SerialIoctl
* this function handles any ioctl calls to the driver
*****************************************************************************/
-static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
+static int edge_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
{
+ struct usb_serial_port *port = tty->driver_data;
DEFINE_WAIT(wait);
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
struct async_icount cnow;
@@ -1650,25 +1617,14 @@ static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned
dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
switch (cmd) {
- // return number of bytes available
- case TIOCINQ:
- dbg("%s (%d) TIOCINQ", __func__, port->number);
- return get_number_bytes_avail(edge_port, (unsigned int __user *) arg);
- break;
-
case TIOCSERGETLSR:
dbg("%s (%d) TIOCSERGETLSR", __func__, port->number);
return get_lsr_info(edge_port, (unsigned int __user *) arg);
- return 0;
case TIOCGSERIAL:
dbg("%s (%d) TIOCGSERIAL", __func__, port->number);
return get_serial_info(edge_port, (struct serial_struct __user *) arg);
- case TIOCSSERIAL:
- dbg("%s (%d) TIOCSSERIAL", __func__, port->number);
- break;
-
case TIOCMIWAIT:
dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
cprev = edge_port->icount;
@@ -1723,8 +1679,9 @@ static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned
* SerialBreak
* this function sends a break to the port
*****************************************************************************/
-static void edge_break (struct usb_serial_port *port, int break_state)
+static void edge_break (struct tty_struct *tty, int break_state)
{
+ struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
int status;
@@ -1866,7 +1823,7 @@ static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned cha
port = edge_serial->serial->port[edge_serial->rxPort];
edge_port = usb_get_serial_port_data(port);
if (edge_port->open) {
- tty = edge_port->port->tty;
+ tty = edge_port->port->port.tty;
if (tty) {
dbg("%s - Sending %d bytes to TTY for port %d", __func__, rxLen, edge_serial->rxPort);
edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
@@ -1941,8 +1898,9 @@ static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2
handle_new_msr (edge_port, byte2);
/* send the current line settings to the port so we are in sync with any further termios calls */
- if (edge_port->port->tty)
- change_port_settings (edge_port, edge_port->port->tty->termios);
+ /* FIXME: locking on tty */
+ if (edge_port->port->port.tty)
+ change_port_settings(edge_port->port->port.tty, edge_port, edge_port->port->port.tty->termios);
/* we have completed the open */
edge_port->openPending = false;
@@ -2078,8 +2036,8 @@ static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 l
}
/* Place LSR data byte into Rx buffer */
- if (lsrData && edge_port->port->tty)
- edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
+ if (lsrData && edge_port->port->port.tty)
+ edge_tty_recv(&edge_port->port->dev, edge_port->port->port.tty, &data, 1);
/* update input line counters */
icount = &edge_port->icount;
@@ -2473,13 +2431,11 @@ static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 r
* This routine is called to set the UART on the device to match the specified
* new settings.
*****************************************************************************/
-#ifndef CMSPAR
-#define CMSPAR 0
-#endif
-static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios)
+
+static void change_port_settings(struct tty_struct *tty,
+ struct edgeport_port *edge_port, struct ktermios *old_termios)
{
struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
- struct tty_struct *tty;
int baud;
unsigned cflag;
__u8 mask = 0xff;
@@ -2498,13 +2454,6 @@ static void change_port_settings (struct edgeport_port *edge_port, struct ktermi
return;
}
- tty = edge_port->port->tty;
- if ((!tty) ||
- (!tty->termios)) {
- dbg("%s - no tty structures", __func__);
- return;
- }
-
cflag = tty->termios->c_cflag;
switch (cflag & CSIZE) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 07:53:21 +0000