1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * addi_apci_16xx.c
4  * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
5  * Project manager: S. Weber
6  *
7  *	ADDI-DATA GmbH
8  *	Dieselstrasse 3
9  *	D-77833 Ottersweier
10  *	Tel: +19(0)7223/9493-0
11  *	Fax: +49(0)7223/9493-92
12  *	http://www.addi-data.com
13  *	info@addi-data.com
14  */
15 
16 #include <linux/module.h>
17 #include <linux/comedi/comedi_pci.h>
18 
19 /*
20  * Register I/O map
21  */
22 #define APCI16XX_IN_REG(x)		(((x) * 4) + 0x08)
23 #define APCI16XX_OUT_REG(x)		(((x) * 4) + 0x14)
24 #define APCI16XX_DIR_REG(x)		(((x) * 4) + 0x20)
25 
26 enum apci16xx_boardid {
27 	BOARD_APCI1648,
28 	BOARD_APCI1696,
29 };
30 
31 struct apci16xx_boardinfo {
32 	const char *name;
33 	int n_chan;
34 };
35 
36 static const struct apci16xx_boardinfo apci16xx_boardtypes[] = {
37 	[BOARD_APCI1648] = {
38 		.name		= "apci1648",
39 		.n_chan		= 48,		/* 2 subdevices */
40 	},
41 	[BOARD_APCI1696] = {
42 		.name		= "apci1696",
43 		.n_chan		= 96,		/* 3 subdevices */
44 	},
45 };
46 
apci16xx_insn_config(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)47 static int apci16xx_insn_config(struct comedi_device *dev,
48 				struct comedi_subdevice *s,
49 				struct comedi_insn *insn,
50 				unsigned int *data)
51 {
52 	unsigned int chan = CR_CHAN(insn->chanspec);
53 	unsigned int mask;
54 	int ret;
55 
56 	if (chan < 8)
57 		mask = 0x000000ff;
58 	else if (chan < 16)
59 		mask = 0x0000ff00;
60 	else if (chan < 24)
61 		mask = 0x00ff0000;
62 	else
63 		mask = 0xff000000;
64 
65 	ret = comedi_dio_insn_config(dev, s, insn, data, mask);
66 	if (ret)
67 		return ret;
68 
69 	outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(s->index));
70 
71 	return insn->n;
72 }
73 
apci16xx_dio_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)74 static int apci16xx_dio_insn_bits(struct comedi_device *dev,
75 				  struct comedi_subdevice *s,
76 				  struct comedi_insn *insn,
77 				  unsigned int *data)
78 {
79 	if (comedi_dio_update_state(s, data))
80 		outl(s->state, dev->iobase + APCI16XX_OUT_REG(s->index));
81 
82 	data[1] = inl(dev->iobase + APCI16XX_IN_REG(s->index));
83 
84 	return insn->n;
85 }
86 
apci16xx_auto_attach(struct comedi_device * dev,unsigned long context)87 static int apci16xx_auto_attach(struct comedi_device *dev,
88 				unsigned long context)
89 {
90 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
91 	const struct apci16xx_boardinfo *board = NULL;
92 	struct comedi_subdevice *s;
93 	unsigned int n_subdevs;
94 	unsigned int last;
95 	int i;
96 	int ret;
97 
98 	if (context < ARRAY_SIZE(apci16xx_boardtypes))
99 		board = &apci16xx_boardtypes[context];
100 	if (!board)
101 		return -ENODEV;
102 	dev->board_ptr = board;
103 	dev->board_name = board->name;
104 
105 	ret = comedi_pci_enable(dev);
106 	if (ret)
107 		return ret;
108 
109 	dev->iobase = pci_resource_start(pcidev, 0);
110 
111 	/*
112 	 * Work out the number of subdevices needed to support all the
113 	 * digital i/o channels on the board. Each subdevice supports
114 	 * up to 32 channels.
115 	 */
116 	n_subdevs = board->n_chan / 32;
117 	if ((n_subdevs * 32) < board->n_chan) {
118 		last = board->n_chan - (n_subdevs * 32);
119 		n_subdevs++;
120 	} else {
121 		last = 0;
122 	}
123 
124 	ret = comedi_alloc_subdevices(dev, n_subdevs);
125 	if (ret)
126 		return ret;
127 
128 	/* Initialize the TTL digital i/o subdevices */
129 	for (i = 0; i < n_subdevs; i++) {
130 		s = &dev->subdevices[i];
131 		s->type		= COMEDI_SUBD_DIO;
132 		s->subdev_flags	= SDF_WRITABLE | SDF_READABLE;
133 		s->n_chan	= ((i * 32) < board->n_chan) ? 32 : last;
134 		s->maxdata	= 1;
135 		s->range_table	= &range_digital;
136 		s->insn_config	= apci16xx_insn_config;
137 		s->insn_bits	= apci16xx_dio_insn_bits;
138 
139 		/* Default all channels to inputs */
140 		s->io_bits	= 0;
141 		outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(i));
142 	}
143 
144 	return 0;
145 }
146 
147 static struct comedi_driver apci16xx_driver = {
148 	.driver_name	= "addi_apci_16xx",
149 	.module		= THIS_MODULE,
150 	.auto_attach	= apci16xx_auto_attach,
151 	.detach		= comedi_pci_detach,
152 };
153 
apci16xx_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)154 static int apci16xx_pci_probe(struct pci_dev *dev,
155 			      const struct pci_device_id *id)
156 {
157 	return comedi_pci_auto_config(dev, &apci16xx_driver, id->driver_data);
158 }
159 
160 static const struct pci_device_id apci16xx_pci_table[] = {
161 	{ PCI_VDEVICE(ADDIDATA, 0x1009), BOARD_APCI1648 },
162 	{ PCI_VDEVICE(ADDIDATA, 0x100a), BOARD_APCI1696 },
163 	{ 0 }
164 };
165 MODULE_DEVICE_TABLE(pci, apci16xx_pci_table);
166 
167 static struct pci_driver apci16xx_pci_driver = {
168 	.name		= "addi_apci_16xx",
169 	.id_table	= apci16xx_pci_table,
170 	.probe		= apci16xx_pci_probe,
171 	.remove		= comedi_pci_auto_unconfig,
172 };
173 module_comedi_pci_driver(apci16xx_driver, apci16xx_pci_driver);
174 
175 MODULE_DESCRIPTION("ADDI-DATA APCI-1648/1696, TTL I/O boards");
176 MODULE_AUTHOR("Comedi https://www.comedi.org");
177 MODULE_LICENSE("GPL");
178