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Diffstat (limited to 'drivers/char/riscom8.c')
-rw-r--r--drivers/char/riscom8.c64
1 files changed, 19 insertions, 45 deletions
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index f1c94f771af5..e2a94bfb2a43 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -81,12 +81,6 @@
static struct riscom_board * IRQ_to_board[16];
static struct tty_driver *riscom_driver;
-static unsigned char * tmp_buf;
-
-static unsigned long baud_table[] = {
- 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
- 9600, 19200, 38400, 57600, 76800, 0,
-};
static struct riscom_board rc_board[RC_NBOARD] = {
{
@@ -551,7 +545,7 @@ static inline void rc_check_modem(struct riscom_board const * bp)
}
/* The main interrupt processing routine */
-static irqreturn_t rc_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+static irqreturn_t rc_interrupt(int irq, void * dev_id)
{
unsigned char status;
unsigned char ack;
@@ -560,11 +554,10 @@ static irqreturn_t rc_interrupt(int irq, void * dev_id, struct pt_regs * regs)
int handled = 0;
bp = IRQ_to_board[irq];
-
- if (!bp || !(bp->flags & RC_BOARD_ACTIVE)) {
+
+ if (!(bp->flags & RC_BOARD_ACTIVE))
return IRQ_NONE;
- }
-
+
while ((++loop < 16) && ((status = ~(rc_in(bp, RC_BSR))) &
(RC_BSR_TOUT | RC_BSR_TINT |
RC_BSR_MINT | RC_BSR_RINT))) {
@@ -675,26 +668,12 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
port->COR2 = 0;
port->MSVR = MSVR_RTS;
- baud = C_BAUD(tty);
-
- if (baud & CBAUDEX) {
- baud &= ~CBAUDEX;
- if (baud < 1 || baud > 2)
- port->tty->termios->c_cflag &= ~CBAUDEX;
- else
- baud += 15;
- }
- if (baud == 15) {
- if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- baud ++;
- if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- baud += 2;
- }
+ baud = tty_get_baud_rate(tty);
/* Select port on the board */
rc_out(bp, CD180_CAR, port_No(port));
- if (!baud_table[baud]) {
+ if (!baud) {
/* Drop DTR & exit */
bp->DTR |= (1u << port_No(port));
rc_out(bp, RC_DTR, bp->DTR);
@@ -710,7 +689,7 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
*/
/* Set baud rate for port */
- tmp = (((RC_OSCFREQ + baud_table[baud]/2) / baud_table[baud] +
+ tmp = (((RC_OSCFREQ + baud/2) / baud +
CD180_TPC/2) / CD180_TPC);
rc_out(bp, CD180_RBPRH, (tmp >> 8) & 0xff);
@@ -718,7 +697,7 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
rc_out(bp, CD180_RBPRL, tmp & 0xff);
rc_out(bp, CD180_TBPRL, tmp & 0xff);
- baud = (baud_table[baud] + 5) / 10; /* Estimated CPS */
+ baud = (baud + 5) / 10; /* Estimated CPS */
/* Two timer ticks seems enough to wakeup something like SLIP driver */
tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO;
@@ -1138,7 +1117,7 @@ static int rc_write(struct tty_struct * tty,
bp = port_Board(port);
- if (!tty || !port->xmit_buf || !tmp_buf)
+ if (!tty || !port->xmit_buf)
return 0;
save_flags(flags);
@@ -1532,9 +1511,9 @@ static void rc_start(struct tty_struct * tty)
* do_rc_hangup() -> tty->hangup() -> rc_hangup()
*
*/
-static void do_rc_hangup(void *private_)
+static void do_rc_hangup(struct work_struct *ugly_api)
{
- struct riscom_port *port = (struct riscom_port *) private_;
+ struct riscom_port *port = container_of(ugly_api, struct riscom_port, tqueue_hangup);
struct tty_struct *tty;
tty = port->tty;
@@ -1560,7 +1539,7 @@ static void rc_hangup(struct tty_struct * tty)
wake_up_interruptible(&port->open_wait);
}
-static void rc_set_termios(struct tty_struct * tty, struct termios * old_termios)
+static void rc_set_termios(struct tty_struct * tty, struct ktermios * old_termios)
{
struct riscom_port *port = (struct riscom_port *)tty->driver_data;
unsigned long flags;
@@ -1583,9 +1562,9 @@ static void rc_set_termios(struct tty_struct * tty, struct termios * old_termios
}
}
-static void do_softint(void *private_)
+static void do_softint(struct work_struct *ugly_api)
{
- struct riscom_port *port = (struct riscom_port *) private_;
+ struct riscom_port *port = container_of(ugly_api, struct riscom_port, tqueue);
struct tty_struct *tty;
if(!(tty = port->tty))
@@ -1597,7 +1576,7 @@ static void do_softint(void *private_)
}
}
-static struct tty_operations riscom_ops = {
+static const struct tty_operations riscom_ops = {
.open = rc_open,
.close = rc_close,
.write = rc_write,
@@ -1626,11 +1605,6 @@ static inline int rc_init_drivers(void)
if (!riscom_driver)
return -ENOMEM;
- if (!(tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL))) {
- printk(KERN_ERR "rc: Couldn't get free page.\n");
- put_tty_driver(riscom_driver);
- return 1;
- }
memset(IRQ_to_board, 0, sizeof(IRQ_to_board));
riscom_driver->owner = THIS_MODULE;
riscom_driver->name = "ttyL";
@@ -1640,10 +1614,11 @@ static inline int rc_init_drivers(void)
riscom_driver->init_termios = tty_std_termios;
riscom_driver->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ riscom_driver->init_termios.c_ispeed = 9600;
+ riscom_driver->init_termios.c_ospeed = 9600;
riscom_driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(riscom_driver, &riscom_ops);
if ((error = tty_register_driver(riscom_driver))) {
- free_page((unsigned long)tmp_buf);
put_tty_driver(riscom_driver);
printk(KERN_ERR "rc: Couldn't register RISCom/8 driver, "
"error = %d\n",
@@ -1654,8 +1629,8 @@ static inline int rc_init_drivers(void)
memset(rc_port, 0, sizeof(rc_port));
for (i = 0; i < RC_NPORT * RC_NBOARD; i++) {
rc_port[i].magic = RISCOM8_MAGIC;
- INIT_WORK(&rc_port[i].tqueue, do_softint, &rc_port[i]);
- INIT_WORK(&rc_port[i].tqueue_hangup, do_rc_hangup, &rc_port[i]);
+ INIT_WORK(&rc_port[i].tqueue, do_softint);
+ INIT_WORK(&rc_port[i].tqueue_hangup, do_rc_hangup);
rc_port[i].close_delay = 50 * HZ/100;
rc_port[i].closing_wait = 3000 * HZ/100;
init_waitqueue_head(&rc_port[i].open_wait);
@@ -1671,7 +1646,6 @@ static void rc_release_drivers(void)
save_flags(flags);
cli();
- free_page((unsigned long)tmp_buf);
tty_unregister_driver(riscom_driver);
put_tty_driver(riscom_driver);
restore_flags(flags);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 22:53:15 +0100