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 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 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 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 }; 153 154 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