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