Staging: comedi: add ni_labpc drivers

This supports National Instruments Lab-PC and compatibles

From: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: David Schleef <ds@schleef.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/ni_labpc.h

+/*
+    ni_labpc.h
+
+    Header for ni_labpc.c and ni_labpc_cs.c
+
+    Copyright (C) 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef _NI_LABPC_H
+#define _NI_LABPC_H
+
+#define EEPROM_SIZE	256	// 256 byte eeprom
+#define NUM_AO_CHAN	2	// boards have two analog output channels
+
+enum labpc_bustype { isa_bustype, pci_bustype, pcmcia_bustype };
+enum labpc_register_layout { labpc_plus_layout, labpc_1200_layout };
+enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
+		isa_dma_transfer };
+
+typedef struct labpc_board_struct {
+	const char *name;
+	int device_id;		// device id for pci and pcmcia boards
+	int ai_speed;		// maximum input speed in nanoseconds
+	enum labpc_bustype bustype;	// ISA/PCI/etc.
+	enum labpc_register_layout register_layout;	// 1200 has extra registers compared to pc+
+	int has_ao;		// has analog output true/false
+	const comedi_lrange *ai_range_table;
+	const int *ai_range_code;
+	const int *ai_range_is_unipolar;
+	unsigned ai_scan_up:1;	// board can auto scan up in ai channels, not just down
+	unsigned memory_mapped_io:1;	/* uses memory mapped io instead of ioports */
+} labpc_board;
+
+typedef struct {
+	struct mite_struct *mite;	// for mite chip on pci-1200
+	volatile unsigned long long count;	/* number of data points left to be taken */
+	unsigned int ao_value[NUM_AO_CHAN];	// software copy of analog output values
+	// software copys of bits written to command registers
+	volatile unsigned int command1_bits;
+	volatile unsigned int command2_bits;
+	volatile unsigned int command3_bits;
+	volatile unsigned int command4_bits;
+	volatile unsigned int command5_bits;
+	volatile unsigned int command6_bits;
+	// store last read of board status registers
+	volatile unsigned int status1_bits;
+	volatile unsigned int status2_bits;
+	unsigned int divisor_a0;	/* value to load into board's counter a0 (conversion pacing) for timed conversions */
+	unsigned int divisor_b0;	/* value to load into board's counter b0 (master) for timed conversions */
+	unsigned int divisor_b1;	/* value to load into board's counter b1 (scan pacing) for timed conversions */
+	unsigned int dma_chan;	// dma channel to use
+	u16 *dma_buffer;	// buffer ai will dma into
+	unsigned int dma_transfer_size;	// transfer size in bytes for current transfer
+	enum transfer_type current_transfer;	// we are using dma/fifo-half-full/etc.
+	unsigned int eeprom_data[EEPROM_SIZE];	// stores contents of board's eeprom
+	unsigned int caldac[16];	// stores settings of calibration dacs
+	// function pointers so we can use inb/outb or readb/writeb as appropriate
+	unsigned int (*read_byte) (unsigned long address);
+	void (*write_byte) (unsigned int byte, unsigned long address);
+} labpc_private;
+
+int labpc_common_attach(comedi_device * dev, unsigned long iobase,
+	unsigned int irq, unsigned int dma);
+int labpc_common_detach(comedi_device * dev);
+
+extern const int labpc_1200_is_unipolar[];
+extern const int labpc_1200_ai_gain_bits[];
+extern const comedi_lrange range_labpc_1200_ai;
+
+#endif /* _NI_LABPC_H */