drivers/staging/speakup/serialio.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SPEAKUP_SERIAL_H
   3 #define _SPEAKUP_SERIAL_H
   4
   5 #include <linux/serial.h>       /* for rs_table, serial constants */
   6 #include <linux/serial_reg.h>   /* for more serial constants */
   7 #ifndef __sparc__
   8 #include <linux/serial.h>
   9 #endif
  10 #include <linux/serial_core.h>
  11
  12 #include "spk_priv.h"
  13
  14 /*
  15  * this is cut&paste from 8250.h. Get rid of the structure, the definitions
  16  * and this whole broken driver.
  17  */
  18 struct old_serial_port {
  19         unsigned int uart; /* unused */
  20         unsigned int baud_base;
  21         unsigned int port;
  22         unsigned int irq;
  23         upf_t flags; /* unused */
  24 };
  25
  26 /* countdown values for serial timeouts in us */
  27 #define SPK_SERIAL_TIMEOUT SPK_SYNTH_TIMEOUT
  28 /* countdown values transmitter/dsr timeouts in us */
  29 #define SPK_XMITR_TIMEOUT 100000
  30 /* countdown values cts timeouts in us */
  31 #define SPK_CTS_TIMEOUT 100000
  32 /* check ttyS0 ... ttyS3 */
  33 #define SPK_LO_TTY 0
  34 #define SPK_HI_TTY 3
  35 /* # of timeouts permitted before disable */
  36 #define NUM_DISABLE_TIMEOUTS 3
  37 /* buffer timeout in ms */
  38 #define SPK_TIMEOUT 100
  39 #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
  40
  41 #define spk_serial_tx_busy() \
  42         ((inb(speakup_info.port_tts + UART_LSR) & BOTH_EMPTY) != BOTH_EMPTY)
  43
  44 #endif