include/ps2mult.h

#ifndef __LINUX_PS2MULT_H
#define __LINUX_PS2MULT_H

#define kbd_request_region()		ps2mult_init()
#define kbd_request_irq(handler)	ps2mult_request_irq(handler)

#define kbd_read_input()		ps2mult_read_input()
#define kbd_read_status()		ps2mult_read_status()
#define kbd_write_output(val)		ps2mult_write_output(val)
#define kbd_write_command(val)		ps2mult_write_command(val)

#define aux_request_irq(hand, dev_id)	0
#define aux_free_irq(dev_id)

#define PS2MULT_KB_SELECTOR		0xA0
#define PS2MULT_MS_SELECTOR		0xA1
#define PS2MULT_ESCAPE			0x7D
#define PS2MULT_BSYNC			0x7E
#define PS2MULT_SESSION_START		0x55
#define PS2MULT_SESSION_END		0x56

#define	PS2BUF_SIZE			512	/* power of 2, please */

  /* PS/2 controller interface (include/asm/keyboard.h)
   */
extern int ps2mult_init (void);
extern int ps2mult_request_irq(void (*handler)(void *));
extern u_char ps2mult_read_input(void);
extern u_char ps2mult_read_status(void);
extern void ps2mult_write_output(u_char val);
extern void ps2mult_write_command(u_char val);

extern void ps2mult_callback (int in_cnt);

  /* Simple serial interface
   */
extern int ps2ser_init(void);
extern void ps2ser_putc(int chr);
extern int ps2ser_getc(void);
extern int ps2ser_check(void);


  /* Serial related stuff
   */
struct serial_state {
	int	baud_base;
	int	irq;
	u8	*iomem_base;
};

#define UART_RX		0	/* In:  Receive buffer (DLAB=0) */
#define UART_TX		0	/* Out: Transmit buffer (DLAB=0) */
#define UART_DLL	0	/* Out: Divisor Latch Low (DLAB=1) */

#define UART_DLM	1	/* Out: Divisor Latch High (DLAB=1) */
#define UART_IER	1	/* Out: Interrupt Enable Register */

#define UART_IIR	2	/* In:  Interrupt ID Register */
#define UART_FCR	2	/* Out: FIFO Control Register */

#define UART_LCR	3	/* Out: Line Control Register */
#define UART_MCR	4	/* Out: Modem Control Register */
#define UART_LSR	5	/* In:  Line Status Register */
#define UART_MSR	6	/* In:  Modem Status Register */
#define UART_SCR	7	/* I/O: Scratch Register */

/*
 * These are the definitions for the FIFO Control Register
 * (16650 only)
 */
#define UART_FCR_ENABLE_FIFO	0x01 /* Enable the FIFO */
#define UART_FCR_CLEAR_RCVR	0x02 /* Clear the RCVR FIFO */
#define UART_FCR_CLEAR_XMIT	0x04 /* Clear the XMIT FIFO */
#define UART_FCR_DMA_SELECT	0x08 /* For DMA applications */
#define UART_FCR_TRIGGER_MASK	0xC0 /* Mask for the FIFO trigger range */
#define UART_FCR_TRIGGER_1	0x00 /* Mask for trigger set at 1 */
#define UART_FCR_TRIGGER_4	0x40 /* Mask for trigger set at 4 */
#define UART_FCR_TRIGGER_8	0x80 /* Mask for trigger set at 8 */
#define UART_FCR_TRIGGER_14	0xC0 /* Mask for trigger set at 14 */

/*
 * These are the definitions for the Line Control Register
 *
 * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting
 * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits.
 */
#define UART_LCR_DLAB	0x80	/* Divisor latch access bit */
#define UART_LCR_SBC	0x40	/* Set break control */
#define UART_LCR_SPAR	0x20	/* Stick parity (?) */
#define UART_LCR_EPAR	0x10	/* Even parity select */
#define UART_LCR_PARITY	0x08	/* Parity Enable */
#define UART_LCR_STOP	0x04	/* Stop bits: 0=1 stop bit, 1= 2 stop bits */
#define UART_LCR_WLEN5  0x00	/* Wordlength: 5 bits */
#define UART_LCR_WLEN6  0x01	/* Wordlength: 6 bits */
#define UART_LCR_WLEN7  0x02	/* Wordlength: 7 bits */
#define UART_LCR_WLEN8  0x03	/* Wordlength: 8 bits */

/*
 * These are the definitions for the Line Status Register
 */
#define UART_LSR_TEMT	0x40	/* Transmitter empty */
#define UART_LSR_THRE	0x20	/* Transmit-hold-register empty */
#define UART_LSR_BI	0x10	/* Break interrupt indicator */
#define UART_LSR_FE	0x08	/* Frame error indicator */
#define UART_LSR_PE	0x04	/* Parity error indicator */
#define UART_LSR_OE	0x02	/* Overrun error indicator */
#define UART_LSR_DR	0x01	/* Receiver data ready */

/*
 * These are the definitions for the Interrupt Identification Register
 */
#define UART_IIR_NO_INT	0x01	/* No interrupts pending */
#define UART_IIR_ID	0x06	/* Mask for the interrupt ID */

#define UART_IIR_MSI	0x00	/* Modem status interrupt */
#define UART_IIR_THRI	0x02	/* Transmitter holding register empty */
#define UART_IIR_RDI	0x04	/* Receiver data interrupt */
#define UART_IIR_RLSI	0x06	/* Receiver line status interrupt */

/*
 * These are the definitions for the Interrupt Enable Register
 */
#define UART_IER_MSI	0x08	/* Enable Modem status interrupt */
#define UART_IER_RLSI	0x04	/* Enable receiver line status interrupt */
#define UART_IER_THRI	0x02	/* Enable Transmitter holding register int. */
#define UART_IER_RDI	0x01	/* Enable receiver data interrupt */

/*
 * These are the definitions for the Modem Control Register
 */
#define UART_MCR_LOOP	0x10	/* Enable loopback test mode */
#define UART_MCR_OUT2	0x08	/* Out2 complement */
#define UART_MCR_OUT1	0x04	/* Out1 complement */
#define UART_MCR_RTS	0x02	/* RTS complement */
#define UART_MCR_DTR	0x01	/* DTR complement */

/*
 * These are the definitions for the Modem Status Register
 */
#define UART_MSR_DCD	0x80	/* Data Carrier Detect */
#define UART_MSR_RI	0x40	/* Ring Indicator */
#define UART_MSR_DSR	0x20	/* Data Set Ready */
#define UART_MSR_CTS	0x10	/* Clear to Send */
#define UART_MSR_DDCD	0x08	/* Delta DCD */
#define UART_MSR_TERI	0x04	/* Trailing edge ring indicator */
#define UART_MSR_DDSR	0x02	/* Delta DSR */
#define UART_MSR_DCTS	0x01	/* Delta CTS */
#define UART_MSR_ANY_DELTA 0x0F	/* Any of the delta bits! */

#endif /* __LINUX_PS2MULT_H */