diff options
Diffstat (limited to 'drivers/accessibility/speakup/serialio.h')
| -rw-r--r-- | drivers/accessibility/speakup/serialio.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/accessibility/speakup/serialio.h b/drivers/accessibility/speakup/serialio.h new file mode 100644 index 000000000000..6f8f86f161bb --- /dev/null +++ b/drivers/accessibility/speakup/serialio.h @@ -0,0 +1,41 @@ +/* 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 |