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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _SPEAKUP_SERIAL_H
#define _SPEAKUP_SERIAL_H
#include <linux/serial.h> /* for rs_table, serial constants */
#include <linux/serial_reg.h> /* for more serial constants */
#include <linux/serial_core.h>
#include "spk_priv.h"
/*
* this is cut&paste from 8250.h. Get rid of the structure, the definitions
* and this whole broken driver.
*/
struct old_serial_port {
unsigned int uart; /* unused */
unsigned int baud_base;
unsigned int port;
unsigned int irq;
upf_t flags; /* unused */
};
/* countdown values for serial timeouts in us */
#define SPK_SERIAL_TIMEOUT SPK_SYNTH_TIMEOUT
/* countdown values transmitter/dsr timeouts in us */
#define SPK_XMITR_TIMEOUT 100000
/* countdown values cts timeouts in us */
#define SPK_CTS_TIMEOUT 100000
/* check ttyS0 ... ttyS3 */
#define SPK_LO_TTY 0
#define SPK_HI_TTY 3
/* # of timeouts permitted before disable */
#define NUM_DISABLE_TIMEOUTS 3
/* buffer timeout in ms */
#define SPK_TIMEOUT 100
#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
#define spk_serial_tx_busy() \
((inb(speakup_info.port_tts + UART_LSR) & BOTH_EMPTY) != BOTH_EMPTY)
#endif
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