1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * comedi/drivers/adl_pci8164.c 4 * 5 * Hardware comedi driver for PCI-8164 Adlink card 6 * Copyright (C) 2004 Michel Lachine <mike@mikelachaine.ca> 7 */ 8 9 /* 10 * Driver: adl_pci8164 11 * Description: Driver for the Adlink PCI-8164 4 Axes Motion Control board 12 * Devices: [ADLink] PCI-8164 (adl_pci8164) 13 * Author: Michel Lachaine <mike@mikelachaine.ca> 14 * Status: experimental 15 * Updated: Mon, 14 Apr 2008 15:10:32 +0100 16 * 17 * Configuration Options: not applicable, uses PCI auto config 18 */ 19 20 #include <linux/kernel.h> 21 #include <linux/module.h> 22 23 #include "../comedi_pci.h" 24 25 #define PCI8164_AXIS(x) ((x) * 0x08) 26 #define PCI8164_CMD_MSTS_REG 0x00 27 #define PCI8164_OTP_SSTS_REG 0x02 28 #define PCI8164_BUF0_REG 0x04 29 #define PCI8164_BUF1_REG 0x06 30 31 static int adl_pci8164_insn_read(struct comedi_device *dev, 32 struct comedi_subdevice *s, 33 struct comedi_insn *insn, 34 unsigned int *data) 35 { 36 unsigned long offset = (unsigned long)s->private; 37 unsigned int chan = CR_CHAN(insn->chanspec); 38 int i; 39 40 for (i = 0; i < insn->n; i++) 41 data[i] = inw(dev->iobase + PCI8164_AXIS(chan) + offset); 42 43 return insn->n; 44 } 45 46 static int adl_pci8164_insn_write(struct comedi_device *dev, 47 struct comedi_subdevice *s, 48 struct comedi_insn *insn, 49 unsigned int *data) 50 { 51 unsigned long offset = (unsigned long)s->private; 52 unsigned int chan = CR_CHAN(insn->chanspec); 53 int i; 54 55 for (i = 0; i < insn->n; i++) 56 outw(data[i], dev->iobase + PCI8164_AXIS(chan) + offset); 57 58 return insn->n; 59 } 60 61 static int adl_pci8164_auto_attach(struct comedi_device *dev, 62 unsigned long context_unused) 63 { 64 struct pci_dev *pcidev = comedi_to_pci_dev(dev); 65 struct comedi_subdevice *s; 66 int ret; 67 68 ret = comedi_pci_enable(dev); 69 if (ret) 70 return ret; 71 dev->iobase = pci_resource_start(pcidev, 2); 72 73 ret = comedi_alloc_subdevices(dev, 4); 74 if (ret) 75 return ret; 76 77 /* read MSTS register / write CMD register for each axis (channel) */ 78 s = &dev->subdevices[0]; 79 s->type = COMEDI_SUBD_PROC; 80 s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 81 s->n_chan = 4; 82 s->maxdata = 0xffff; 83 s->len_chanlist = 4; 84 s->insn_read = adl_pci8164_insn_read; 85 s->insn_write = adl_pci8164_insn_write; 86 s->private = (void *)PCI8164_CMD_MSTS_REG; 87 88 /* read SSTS register / write OTP register for each axis (channel) */ 89 s = &dev->subdevices[1]; 90 s->type = COMEDI_SUBD_PROC; 91 s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 92 s->n_chan = 4; 93 s->maxdata = 0xffff; 94 s->len_chanlist = 4; 95 s->insn_read = adl_pci8164_insn_read; 96 s->insn_write = adl_pci8164_insn_write; 97 s->private = (void *)PCI8164_OTP_SSTS_REG; 98 99 /* read/write BUF0 register for each axis (channel) */ 100 s = &dev->subdevices[2]; 101 s->type = COMEDI_SUBD_PROC; 102 s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 103 s->n_chan = 4; 104 s->maxdata = 0xffff; 105 s->len_chanlist = 4; 106 s->insn_read = adl_pci8164_insn_read; 107 s->insn_write = adl_pci8164_insn_write; 108 s->private = (void *)PCI8164_BUF0_REG; 109 110 /* read/write BUF1 register for each axis (channel) */ 111 s = &dev->subdevices[3]; 112 s->type = COMEDI_SUBD_PROC; 113 s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 114 s->n_chan = 4; 115 s->maxdata = 0xffff; 116 s->len_chanlist = 4; 117 s->insn_read = adl_pci8164_insn_read; 118 s->insn_write = adl_pci8164_insn_write; 119 s->private = (void *)PCI8164_BUF1_REG; 120 121 return 0; 122 } 123 124 static struct comedi_driver adl_pci8164_driver = { 125 .driver_name = "adl_pci8164", 126 .module = THIS_MODULE, 127 .auto_attach = adl_pci8164_auto_attach, 128 .detach = comedi_pci_detach, 129 }; 130 131 static int adl_pci8164_pci_probe(struct pci_dev *dev, 132 const struct pci_device_id *id) 133 { 134 return comedi_pci_auto_config(dev, &adl_pci8164_driver, 135 id->driver_data); 136 } 137 138 static const struct pci_device_id adl_pci8164_pci_table[] = { 139 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x8164) }, 140 { 0 } 141 }; 142 MODULE_DEVICE_TABLE(pci, adl_pci8164_pci_table); 143 144 static struct pci_driver adl_pci8164_pci_driver = { 145 .name = "adl_pci8164", 146 .id_table = adl_pci8164_pci_table, 147 .probe = adl_pci8164_pci_probe, 148 .remove = comedi_pci_auto_unconfig, 149 }; 150 module_comedi_pci_driver(adl_pci8164_driver, adl_pci8164_pci_driver); 151 152 MODULE_AUTHOR("Comedi https://www.comedi.org"); 153 MODULE_DESCRIPTION("Comedi low-level driver"); 154 MODULE_LICENSE("GPL"); 155