patch-2.2.18 linux/drivers/char/atari_MFPser.h

• Lines: 132
• Date: Sat Oct 14 00:06:42 2000
• Orig file: v2.2.17/drivers/char/atari_MFPser.h
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/char/atari_MFPser.h linux/drivers/char/atari_MFPser.h
@@ -0,0 +1,131 @@
+
+/*
+ * atari_MFPser.h: Definitions for MFP serial ports
+ *
+ * Copyright 1994 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ */
+
+
+#ifndef _ATARI_MFPSER_H
+#define _ATARI_MFPSER_H
+
+#define INIT_currMFP(info)	\
+	volatile struct MFP *currMFP = (volatile struct MFP *)(info->port)
+
+/* MFP input frequency, divided by 16 (USART prediv for async modes)
+ * and 2 because of each timer run _toggles_ the output, resulting in
+ * half the frequency, and 2 as greatest common divisor of all timer
+ * modes.
+ */
+#define	MFP_BAUD_BASE	(2457600/16/2/2)
+
+/* USART Control Register */
+
+#define	UCR_PARITY_MASK		0x06
+#define	UCR_PARITY_OFF		0x00
+#define	UCR_PARITY_ODD		0x04
+#define	UCR_PARITY_EVEN		0x06
+
+#define	UCR_MODE_MASK		0x18
+#define	UCR_SYNC_MODE		0x00
+#define	UCR_ASYNC_1			0x08
+#define	UCR_ASNYC_15		0x10
+#define	UCR_ASYNC_2			0x18
+
+#define	UCR_CHSIZE_MASK		0x60
+#define	UCR_CHSIZE_8		0x00
+#define	UCR_CHSIZE_7		0x20
+#define	UCR_CHSIZE_6		0x40
+#define	UCR_CHSIZE_5		0x60
+
+#define	UCR_PREDIV			0x80
+
+/* Receiver Status Register */
+
+#define	RSR_RX_ENAB			0x01
+#define	RSR_STRIP_SYNC		0x02
+#define	RSR_SYNC_IN_PRGR	0x04	/* sync mode only */
+#define	RSR_CHAR_IN_PRGR	0x04	/* async mode only */
+#define	RSR_SYNC_SEARCH		0x08	/* sync mode only */
+#define	RSR_BREAK_DETECT	0x08	/* async mode only */
+#define	RSR_FRAME_ERR		0x10
+#define	RSR_PARITY_ERR		0x20
+#define	RSR_OVERRUN_ERR		0x40
+#define	RSR_CHAR_AVAILABLE	0x80
+
+/* Transmitter Status Register */
+
+#define	TSR_TX_ENAB			0x01
+
+#define	TSR_SOMODE_MASK		0x06
+#define	TSR_SOMODE_OPEN		0x00
+#define	TSR_SOMODE_LOW		0x02
+#define	TSR_SOMODE_HIGH		0x04
+#define	TSR_SOMODE_LOOP		0x06
+
+#define	TSR_SEND_BREAK		0x08
+#define	TSR_LAST_BYTE_SENT	0x10
+#define	TSR_HALF_DUPLEX		0x20
+#define	TSR_UNDERRUN		0x40
+#define	TSR_BUF_EMPTY		0x80
+
+/* Control signals in the GPIP */
+
+#define	GPIP_DCD			0x02
+#define	GPIP_CTS			0x04
+#define	GPIP_RI				0x40
+
+/* MFP speeders */
+#define MFP_WITH_WEIRED_CLOCK	0x00
+#define MFP_STANDARD		0x01
+#define MFP_WITH_PLL		0x02
+#define MFP_WITH_RSVE		0x03
+#define MFP_WITH_RSFI		0x04
+
+
+/* Convenience routine to access RTS and DTR in the Soundchip: It sets
+ * the register to (oldvalue & mask) if mask is negative or (oldvalue
+ * | mask) if positive. It returns the old value. I guess the
+ * parameters will be constants most of the time, so gcc can throw
+ * away the if statement if it isn't needed.
+ */
+ 
+static __inline__ unsigned char GIACCESS( int mask )
+{
+	unsigned long   cpu_status;
+	unsigned char   old;
+
+	save_flags(cpu_status);
+	cli();
+
+	sound_ym.rd_data_reg_sel = 14;
+	old = sound_ym.rd_data_reg_sel;
+
+	if (mask) {
+		if (mask < 0)
+			sound_ym.wd_data = old & mask;
+		else
+			sound_ym.wd_data = old | mask;
+	}
+	
+	restore_flags(cpu_status);
+	return( old );
+}
+
+#define	GI_RTS				0x08
+#define	GI_DTR				0x10
+
+#define	MFPser_RTSon()		GIACCESS( ~GI_RTS )
+#define	MFPser_RTSoff()		GIACCESS( GI_RTS )
+#define	MFPser_DTRon()		GIACCESS( ~GI_DTR )
+#define	MFPser_DTRoff()		GIACCESS( GI_DTR )
+
+
+int atari_MFPser_init( void );
+
+#endif /* _ATARI_MFPSER_H */