linux/drivers/accessibility/speakup/serialio.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/interrupt.h>
#include <linux/ioport.h>

#include "spk_types.h"
#include "speakup.h"
#include "spk_priv.h"
#include "serialio.h"

#include <linux/serial_core.h>
/* WARNING:  Do not change this to <linux/serial.h> without testing that
 * SERIAL_PORT_DFNS does get defined to the appropriate value.
 */
#include <asm/serial.h>

#ifndef SERIAL_PORT_DFNS
#define SERIAL_PORT_DFNS
#endif

static void start_serial_interrupt(int irq);

static const struct old_serial_port rs_table[] = …;

static const struct old_serial_port *serstate;
static int timeouts;

static int spk_serial_out(struct spk_synth *in_synth, const char ch);
static void spk_serial_send_xchar(struct spk_synth *in_synth, char ch);
static void spk_serial_tiocmset(struct spk_synth *in_synth, unsigned int set, unsigned int clear);
static unsigned char spk_serial_in(struct spk_synth *in_synth);
static unsigned char spk_serial_in_nowait(struct spk_synth *in_synth);
static void spk_serial_flush_buffer(struct spk_synth *in_synth);
static int spk_serial_wait_for_xmitr(struct spk_synth *in_synth);

struct spk_io_ops spk_serial_io_ops = …;
EXPORT_SYMBOL_GPL(…);

const struct old_serial_port *spk_serial_init(int index)
{ … }

static irqreturn_t synth_readbuf_handler(int irq, void *dev_id)
{ … }

static void start_serial_interrupt(int irq)
{ … }

static void spk_serial_send_xchar(struct spk_synth *synth, char ch)
{ … }

static void spk_serial_tiocmset(struct spk_synth *in_synth, unsigned int set, unsigned int clear)
{ … }

int spk_serial_synth_probe(struct spk_synth *synth)
{ … }
EXPORT_SYMBOL_GPL(…);

void spk_stop_serial_interrupt(void)
{ … }
EXPORT_SYMBOL_GPL(…);

static int spk_serial_wait_for_xmitr(struct spk_synth *in_synth)
{ … }

static unsigned char spk_serial_in(struct spk_synth *in_synth)
{ … }

static unsigned char spk_serial_in_nowait(struct spk_synth *in_synth)
{ … }

static void spk_serial_flush_buffer(struct spk_synth *in_synth)
{ … }

static int spk_serial_out(struct spk_synth *in_synth, const char ch)
{ … }

const char *spk_serial_synth_immediate(struct spk_synth *synth,
				       const char *buff)
{ … }
EXPORT_SYMBOL_GPL(…);

void spk_serial_release(struct spk_synth *synth)
{ … }
EXPORT_SYMBOL_GPL(…);