diff options
Diffstat (limited to 'drivers/serial/crisv10.c')
| -rw-r--r-- | drivers/serial/crisv10.c | 44 |
1 files changed, 31 insertions, 13 deletions
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c index 31f172397af3..fa62578fcd20 100644 --- a/drivers/serial/crisv10.c +++ b/drivers/serial/crisv10.c @@ -1411,11 +1411,12 @@ e100_enable_rs485(struct tty_struct *tty, struct serial_rs485 *r) CONFIG_ETRAX_RS485_LTC1387_RXEN_PORT_G_BIT, 1); #endif - info->rs485.flags = r->flags; - if (r->delay_rts_before_send >= 1000) + info->rs485 = *r; + + /* Maximum delay before RTS equal to 1000 */ + if (info->rs485.delay_rts_before_send >= 1000) info->rs485.delay_rts_before_send = 1000; - else - info->rs485.delay_rts_before_send = r->delay_rts_before_send; + /* printk("rts: on send = %i, after = %i, enabled = %i", info->rs485.rts_on_send, info->rs485.rts_after_sent, @@ -3234,9 +3235,9 @@ rs_write(struct tty_struct *tty, e100_disable_rx(info); e100_enable_rx_irq(info); #endif - - if (info->rs485.delay_rts_before_send > 0) - msleep(info->rs485.delay_rts_before_send); + if ((info->rs485.flags & SER_RS485_RTS_BEFORE_SEND) && + (info->rs485.delay_rts_before_send > 0)) + msleep(info->rs485.delay_rts_before_send); } #endif /* CONFIG_ETRAX_RS485 */ @@ -3694,6 +3695,11 @@ rs_ioctl(struct tty_struct *tty, struct file * file, rs485data.delay_rts_before_send = rs485ctrl.delay_rts_before_send; rs485data.flags = 0; + if (rs485data.delay_rts_before_send != 0) + rs485data.flags |= SER_RS485_RTS_BEFORE_SEND; + else + rs485data.flags &= ~(SER_RS485_RTS_BEFORE_SEND); + if (rs485ctrl.enabled) rs485data.flags |= SER_RS485_ENABLED; else @@ -3724,6 +3730,17 @@ rs_ioctl(struct tty_struct *tty, struct file * file, return e100_enable_rs485(tty, &rs485data); } + case TIOCGRS485: + { + struct serial_rs485 *rs485data = + &(((struct e100_serial *)tty->driver_data)->rs485); + /* This is the ioctl to get RS485 data from user-space */ + if (copy_to_user((struct serial_rs485 *) arg, + rs485data, + sizeof(struct serial_rs485))) + return -EFAULT; + break; + } case TIOCSERWRRS485: { @@ -3924,7 +3941,6 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout) * Check R_DMA_CHx_STATUS bit 0-6=number of available bytes in FIFO * R_DMA_CHx_HWSW bit 31-16=nbr of bytes left in DMA buffer (0=64k) */ - lock_kernel(); orig_jiffies = jiffies; while (info->xmit.head != info->xmit.tail || /* More in send queue */ (*info->ostatusadr & 0x007f) || /* more in FIFO */ @@ -3941,7 +3957,6 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout) curr_time_usec - info->last_tx_active_usec; } set_current_state(TASK_RUNNING); - unlock_kernel(); } /* @@ -3981,7 +3996,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp, */ if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { - wait_event_interruptible(info->close_wait, + wait_event_interruptible_tty(info->close_wait, !(info->flags & ASYNC_CLOSING)); #ifdef SERIAL_DO_RESTART if (info->flags & ASYNC_HUP_NOTIFY) @@ -4057,7 +4072,9 @@ block_til_ready(struct tty_struct *tty, struct file * filp, printk("block_til_ready blocking: ttyS%d, count = %d\n", info->line, info->count); #endif + tty_unlock(); schedule(); + tty_lock(); } set_current_state(TASK_RUNNING); remove_wait_queue(&info->open_wait, &wait); @@ -4139,7 +4156,7 @@ rs_open(struct tty_struct *tty, struct file * filp) */ if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { - wait_event_interruptible(info->close_wait, + wait_event_interruptible_tty(info->close_wait, !(info->flags & ASYNC_CLOSING)); #ifdef SERIAL_DO_RESTART return ((info->flags & ASYNC_HUP_NOTIFY) ? @@ -4516,14 +4533,15 @@ static int __init rs_init(void) /* Set sane defaults */ info->rs485.flags &= ~(SER_RS485_RTS_ON_SEND); info->rs485.flags |= SER_RS485_RTS_AFTER_SEND; + info->rs485.flags &= ~(SER_RS485_RTS_BEFORE_SEND); info->rs485.delay_rts_before_send = 0; info->rs485.flags &= ~(SER_RS485_ENABLED); #endif INIT_WORK(&info->work, do_softint); if (info->enabled) { - printk(KERN_INFO "%s%d at 0x%x is a builtin UART with DMA\n", - serial_driver->name, info->line, (unsigned int)info->ioport); + printk(KERN_INFO "%s%d at %p is a builtin UART with DMA\n", + serial_driver->name, info->line, info->ioport); } } #ifdef CONFIG_ETRAX_FAST_TIMER |