From 9399575dd30edcb84e821583daf81d4ba774a95b Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Wed, 6 Dec 2006 20:38:59 -0800 Subject: [PATCH] dz: Fixes to make it work This a set of fixes mostly to make the driver actually work: 1. Actually select the line for setting parameters and receiver disable/enable. 2. Select the line for receive and transmit interrupt handling correctly. 3. Report the transmitter empty state correctly. 4. Set the I/O type of ports correctly. 5. Perform polled transmission correctly. 6. Don't fix the console line at ttyS3. 7. Magic SysRq support. 8. Various small bits here and there. Tested with a DECstation 2100 (thanks Flo for making this possible). [akpm@osdl.org: fix typo] Signed-off-by: Maciej W. Rozycki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/serial/dz.h | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) (limited to 'drivers/serial/dz.h') diff --git a/drivers/serial/dz.h b/drivers/serial/dz.h index 86ef417..9674d4e 100644 --- a/drivers/serial/dz.h +++ b/drivers/serial/dz.h @@ -1,20 +1,22 @@ /* - * dz.h: Serial port driver for DECStations equiped + * dz.h: Serial port driver for DECstations equipped * with the DZ chipset. * * Copyright (C) 1998 Olivier A. D. Lebaillif * * Email: olivier.lebaillif@ifrsys.com * + * Copyright (C) 2004, 2006 Maciej W. Rozycki */ #ifndef DZ_SERIAL_H #define DZ_SERIAL_H /* - * Definitions for the Control and Status Received. + * Definitions for the Control and Status Register. */ #define DZ_TRDY 0x8000 /* Transmitter empty */ -#define DZ_TIE 0x4000 /* Transmitter Interrupt Enable */ +#define DZ_TIE 0x4000 /* Transmitter Interrupt Enbl */ +#define DZ_TLINE 0x0300 /* Transmitter Line Number */ #define DZ_RDONE 0x0080 /* Receiver data ready */ #define DZ_RIE 0x0040 /* Receive Interrupt Enable */ #define DZ_MSE 0x0020 /* Master Scan Enable */ @@ -22,32 +24,44 @@ #define DZ_MAINT 0x0008 /* Loop Back Mode */ /* - * Definitions for the Received buffer. + * Definitions for the Receiver Buffer Register. */ -#define DZ_RBUF_MASK 0x00FF /* Data Mask in the Receive Buffer */ -#define DZ_LINE_MASK 0x0300 /* Line Mask in the Receive Buffer */ +#define DZ_RBUF_MASK 0x00FF /* Data Mask */ +#define DZ_LINE_MASK 0x0300 /* Line Mask */ #define DZ_DVAL 0x8000 /* Valid Data indicator */ #define DZ_OERR 0x4000 /* Overrun error indicator */ #define DZ_FERR 0x2000 /* Frame error indicator */ #define DZ_PERR 0x1000 /* Parity error indicator */ -#define LINE(x) (x & DZ_LINE_MASK) >> 8 /* Get the line number from the input buffer */ -#define UCHAR(x) (unsigned char)(x & DZ_RBUF_MASK) +#define LINE(x) ((x & DZ_LINE_MASK) >> 8) /* Get the line number + from the input buffer */ +#define UCHAR(x) ((unsigned char)(x & DZ_RBUF_MASK)) /* - * Definitions for the Transmit Register. + * Definitions for the Transmit Control Register. */ #define DZ_LINE_KEYBOARD 0x0001 #define DZ_LINE_MOUSE 0x0002 #define DZ_LINE_MODEM 0x0004 #define DZ_LINE_PRINTER 0x0008 +#define DZ_MODEM_RTS 0x0800 /* RTS for the modem line (2) */ #define DZ_MODEM_DTR 0x0400 /* DTR for the modem line (2) */ +#define DZ_PRINT_RTS 0x0200 /* RTS for the prntr line (3) */ +#define DZ_PRINT_DTR 0x0100 /* DTR for the prntr line (3) */ +#define DZ_LNENB 0x000f /* Transmitter Line Enable */ /* * Definitions for the Modem Status Register. */ +#define DZ_MODEM_RI 0x0800 /* RI for the modem line (2) */ +#define DZ_MODEM_CD 0x0400 /* CD for the modem line (2) */ #define DZ_MODEM_DSR 0x0200 /* DSR for the modem line (2) */ +#define DZ_MODEM_CTS 0x0100 /* CTS for the modem line (2) */ +#define DZ_PRINT_RI 0x0008 /* RI for the printer line (3) */ +#define DZ_PRINT_CD 0x0004 /* CD for the printer line (3) */ +#define DZ_PRINT_DSR 0x0002 /* DSR for the prntr line (3) */ +#define DZ_PRINT_CTS 0x0001 /* CTS for the prntr line (3) */ /* * Definitions for the Transmit Data Register. -- cgit v1.1