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TTY: 68328serial, remove 68328serial.h

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All the needed stuff is moved to 68328serial.c now.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-04-02 13:54:39 +02:00 committed by Greg Kroah-Hartman
parent 107afb7a50
commit 1bb2687c3b
2 changed files with 76 additions and 97 deletions
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79
drivers/tty/serial/68328serial.c
View File

@ -57,8 +57,6 @@
#endif /* CONFIG_M68VZ328 */
#endif /* CONFIG_M68EZ328 */
#include "68328serial.h"
/* Turn off usage of real serial interrupt code, to "support" Copilot */
#ifdef CONFIG_XCOPILOT_BUGS
#undef USE_INTS
@ -66,9 +64,84 @@
#define USE_INTS
#endif
/*
* I believe this is the optimal setting that reduces the number of interrupts.
* At high speeds the output might become a little "bursted" (use USTCNT_TXHE
* if that bothers you), but in most cases it will not, since we try to
* transmit characters every time rs_interrupt is called. Thus, quite often
* you'll see that a receive interrupt occures before the transmit one.
* -- Vladimir Gurevich
*/
#define USTCNT_TX_INTR_MASK (USTCNT_TXEE)
/*
* 68328 and 68EZ328 UARTS are a little bit different. EZ328 has special
* "Old data interrupt" which occures whenever the data stay in the FIFO
* longer than 30 bits time. This allows us to use FIFO without compromising
* latency. '328 does not have this feature and without the real 328-based
* board I would assume that RXRE is the safest setting.
*
* For EZ328 I use RXHE (Half empty) interrupt to reduce the number of
* interrupts. RXFE (receive queue full) causes the system to lose data
* at least at 115200 baud
*
* If your board is busy doing other stuff, you might consider to use
* RXRE (data ready intrrupt) instead.
*
* The other option is to make these INTR masks run-time configurable, so
* that people can dynamically adapt them according to the current usage.
* -- Vladimir Gurevich
*/
/* (es) */
#if defined(CONFIG_M68EZ328) || defined(CONFIG_M68VZ328)
#define USTCNT_RX_INTR_MASK (USTCNT_RXHE | USTCNT_ODEN)
#elif defined(CONFIG_M68328)
#define USTCNT_RX_INTR_MASK (USTCNT_RXRE)
#else
#error Please, define the Rx interrupt events for your CPU
#endif
/* (/es) */
/*
* This is our internal structure for each serial port's state.
*
* For definitions of the flags field, see serial.h
*/
struct m68k_serial {
char is_cons; /* Is this our console. */
int magic;
int baud_base;
int port;
int irq;
int flags; /* defined in tty.h */
int type; /* UART type */
struct tty_struct *tty;
int custom_divisor;
int x_char; /* xon/xoff character */
int close_delay;
unsigned short closing_wait;
int line;
int count; /* # of fd on device */
int blocked_open; /* # of blocked opens */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
};
#define SERIAL_MAGIC 0x5301
/*
* Define the number of ports supported and their irqs.
*/
#define NR_PORTS 1
static struct m68k_serial m68k_soft[NR_PORTS];
static unsigned int uart_irqs[NR_PORTS] = UART_IRQ_DEFNS;
static unsigned int uart_irqs[NR_PORTS] = { UART_IRQ_NUM };
/* multiple ports are contiguous in memory */
m68328_uart *uart_addr = (m68328_uart *)USTCNT_ADDR;

94
drivers/tty/serial/68328serial.h
View File

@ -1,94 +0,0 @@
/* 68328serial.h: Definitions for the mc68328 serial driver.
*
* Copyright (C) 1995 David S. Miller <davem@caip.rutgers.edu>
* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
* Copyright (C) 1998, 1999 D. Jeff Dionne <jeff@uclinux.org>
* Copyright (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>
*
* VZ Support/Fixes Evan Stawnyczy <e@lineo.ca>
*/
#ifndef _MC683XX_SERIAL_H
#define _MC683XX_SERIAL_H
/*
* I believe this is the optimal setting that reduces the number of interrupts.
* At high speeds the output might become a little "bursted" (use USTCNT_TXHE
* if that bothers you), but in most cases it will not, since we try to
* transmit characters every time rs_interrupt is called. Thus, quite often
* you'll see that a receive interrupt occures before the transmit one.
* -- Vladimir Gurevich
*/
#define USTCNT_TX_INTR_MASK (USTCNT_TXEE)
/*
* 68328 and 68EZ328 UARTS are a little bit different. EZ328 has special
* "Old data interrupt" which occures whenever the data stay in the FIFO
* longer than 30 bits time. This allows us to use FIFO without compromising
* latency. '328 does not have this feature and without the real 328-based
* board I would assume that RXRE is the safest setting.
*
* For EZ328 I use RXHE (Half empty) interrupt to reduce the number of
* interrupts. RXFE (receive queue full) causes the system to lose data
* at least at 115200 baud
*
* If your board is busy doing other stuff, you might consider to use
* RXRE (data ready intrrupt) instead.
*
* The other option is to make these INTR masks run-time configurable, so
* that people can dynamically adapt them according to the current usage.
* -- Vladimir Gurevich
*/
/* (es) */
#if defined(CONFIG_M68EZ328) || defined(CONFIG_M68VZ328)
#define USTCNT_RX_INTR_MASK (USTCNT_RXHE | USTCNT_ODEN)
#elif defined(CONFIG_M68328)
#define USTCNT_RX_INTR_MASK (USTCNT_RXRE)
#else
#error Please, define the Rx interrupt events for your CPU
#endif
/* (/es) */
/*
* This is our internal structure for each serial port's state.
*
* Many fields are paralleled by the structure used by the serial_struct
* structure.
*
* For definitions of the flags field, see tty.h
*/
struct m68k_serial {
char is_cons; /* Is this our console. */
int magic;
int baud_base;
int port;
int irq;
int flags; /* defined in tty.h */
int type; /* UART type */
struct tty_struct *tty;
int custom_divisor;
int x_char; /* xon/xoff character */
int close_delay;
unsigned short closing_wait;
int line;
int count; /* # of fd on device */
int blocked_open; /* # of blocked opens */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
};
#define SERIAL_MAGIC 0x5301
/*
* Define the number of ports supported and their irqs.
*/
#define NR_PORTS 1
#define UART_IRQ_DEFNS {UART_IRQ_NUM}
#endif /* !(_MC683XX_SERIAL_H) */