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serial: use tty_port

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Switch the serial_core based drivers to use the new tty_port structure.
We can't quite use all of it yet because of the dynamically allocated
extras in the serial_core layer.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox
2008-07-16 21:53:50 +01:00
committed by Linus Torvalds
parent 6f67048cd0
commit df4f4dd429
5 changed files with 60 additions and 58 deletions
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26
include/linux/serial_core.h
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@@ -344,13 +344,15 @@ typedef unsigned int __bitwise__ uif_t;
* stuff here.
*/
struct uart_info {
struct tty_struct *tty;
struct tty_port port;
struct circ_buf xmit;
uif_t flags;
/*
* Definitions for info->flags. These are _private_ to serial_core, and
* are specific to this structure. They may be queried by low level drivers.
*
* FIXME: use the ASY_ definitions
*/
#define UIF_CHECK_CD ((__force uif_t) (1 << 25))
#define UIF_CTS_FLOW ((__force uif_t) (1 << 26))
@@ -358,11 +360,7 @@ struct uart_info {
#define UIF_INITIALIZED ((__force uif_t) (1 << 31))
#define UIF_SUSPENDED ((__force uif_t) (1 << 30))
int blocked_open;
struct tasklet_struct tlet;
wait_queue_head_t open_wait;
wait_queue_head_t delta_msr_wait;
};
@@ -439,8 +437,8 @@ int uart_resume_port(struct uart_driver *reg, struct uart_port *port);
#define uart_circ_chars_free(circ) \
(CIRC_SPACE((circ)->head, (circ)->tail, UART_XMIT_SIZE))
#define uart_tx_stopped(port) \
((port)->info->tty->stopped || (port)->info->tty->hw_stopped)
#define uart_tx_stopped(portp) \
((portp)->info->port.tty->stopped || (portp)->info->port.tty->hw_stopped)
/*
* The following are helper functions for the low level drivers.
@@ -451,7 +449,7 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
#ifdef SUPPORT_SYSRQ
if (port->sysrq) {
if (ch && time_before(jiffies, port->sysrq)) {
handle_sysrq(ch, port->info ? port->info->tty : NULL);
handle_sysrq(ch, port->info ? port->info->port.tty : NULL);
port->sysrq = 0;
return 1;
}
@@ -480,7 +478,7 @@ static inline int uart_handle_break(struct uart_port *port)
}
#endif
if (port->flags & UPF_SAK)
do_SAK(info->tty);
do_SAK(info->port.tty);
return 0;
}
@@ -503,9 +501,9 @@ uart_handle_dcd_change(struct uart_port *port, unsigned int status)
if (info->flags & UIF_CHECK_CD) {
if (status)
wake_up_interruptible(&info->open_wait);
else if (info->tty)
tty_hangup(info->tty);
wake_up_interruptible(&info->port.open_wait);
else if (info->port.tty)
tty_hangup(info->port.tty);
}
}
@@ -518,7 +516,7 @@ static inline void
uart_handle_cts_change(struct uart_port *port, unsigned int status)
{
struct uart_info *info = port->info;
struct tty_struct *tty = info->tty;
struct tty_struct *tty = info->port.tty;
port->icount.cts++;
@@ -544,7 +542,7 @@ static inline void
uart_insert_char(struct uart_port *port, unsigned int status,
unsigned int overrun, unsigned int ch, unsigned int flag)
{
struct tty_struct *tty = port->info->tty;
struct tty_struct *tty = port->info->port.tty;
if ((status & port->ignore_status_mask & ~overrun) == 0)
tty_insert_flip_char(tty, ch, flag);