drivers/staging/comedi/drivers/ni

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This source file includes following definitions.
ni_670x_ao_insn_write
ni_670x_dio_insn_bits
ni_670x_dio_insn_config
ni_670x_mite_init
ni_670x_auto_attach
ni_670x_detach
ni_670x_pci_probe
   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Comedi driver for NI 670x devices
   4  *
   5  * COMEDI - Linux Control and Measurement Device Interface
   6  * Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
   7  */
   8 
   9 /*
  10  * Driver: ni_670x
  11  * Description: National Instruments 670x
  12  * Author: Bart Joris <bjoris@advalvas.be>
  13  * Updated: Wed, 11 Dec 2002 18:25:35 -0800
  14  * Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
  15  * Status: unknown
  16  *
  17  * Commands are not supported.
  18  *
  19  * Manuals:
  20  *   322110a.pdf        PCI/PXI-6704 User Manual
  21  *   322110b.pdf        PCI/PXI-6703/6704 User Manual
  22  */
  23 
  24 #include <linux/module.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/slab.h>
  27 
  28 #include "../comedi_pci.h"
  29 
  30 #define AO_VALUE_OFFSET                 0x00
  31 #define AO_CHAN_OFFSET                  0x0c
  32 #define AO_STATUS_OFFSET                0x10
  33 #define AO_CONTROL_OFFSET               0x10
  34 #define DIO_PORT0_DIR_OFFSET    0x20
  35 #define DIO_PORT0_DATA_OFFSET   0x24
  36 #define DIO_PORT1_DIR_OFFSET    0x28
  37 #define DIO_PORT1_DATA_OFFSET   0x2c
  38 #define MISC_STATUS_OFFSET              0x14
  39 #define MISC_CONTROL_OFFSET             0x14
  40 
  41 enum ni_670x_boardid {
  42         BOARD_PCI6703,
  43         BOARD_PXI6704,
  44         BOARD_PCI6704,
  45 };
  46 
  47 struct ni_670x_board {
  48         const char *name;
  49         unsigned short ao_chans;
  50 };
  51 
  52 static const struct ni_670x_board ni_670x_boards[] = {
  53         [BOARD_PCI6703] = {
  54                 .name           = "PCI-6703",
  55                 .ao_chans       = 16,
  56         },
  57         [BOARD_PXI6704] = {
  58                 .name           = "PXI-6704",
  59                 .ao_chans       = 32,
  60         },
  61         [BOARD_PCI6704] = {
  62                 .name           = "PCI-6704",
  63                 .ao_chans       = 32,
  64         },
  65 };
  66 
  67 struct ni_670x_private {
  68         int boardtype;
  69         int dio;
  70 };
  71 
  72 static int ni_670x_ao_insn_write(struct comedi_device *dev,
  73                                  struct comedi_subdevice *s,
  74                                  struct comedi_insn *insn,
  75                                  unsigned int *data)
  76 {
  77         unsigned int chan = CR_CHAN(insn->chanspec);
  78         unsigned int val = s->readback[chan];
  79         int i;
  80 
  81         /*
  82          * Channel number mapping:
  83          *
  84          * NI 6703/ NI 6704 | NI 6704 Only
  85          * -------------------------------
  86          * vch(0)  :  0     | ich(16) :  1
  87          * vch(1)  :  2     | ich(17) :  3
  88          * ...              | ...
  89          * vch(15) : 30     | ich(31) : 31
  90          */
  91         for (i = 0; i < insn->n; i++) {
  92                 val = data[i];
  93                 /* First write in channel register which channel to use */
  94                 writel(((chan & 15) << 1) | ((chan & 16) >> 4),
  95                        dev->mmio + AO_CHAN_OFFSET);
  96                 /* write channel value */
  97                 writel(val, dev->mmio + AO_VALUE_OFFSET);
  98         }
  99         s->readback[chan] = val;
 100 
 101         return insn->n;
 102 }
 103 
 104 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 105                                  struct comedi_subdevice *s,
 106                                  struct comedi_insn *insn,
 107                                  unsigned int *data)
 108 {
 109         if (comedi_dio_update_state(s, data))
 110                 writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);
 111 
 112         data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);
 113 
 114         return insn->n;
 115 }
 116 
 117 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 118                                    struct comedi_subdevice *s,
 119                                    struct comedi_insn *insn,
 120                                    unsigned int *data)
 121 {
 122         int ret;
 123 
 124         ret = comedi_dio_insn_config(dev, s, insn, data, 0);
 125         if (ret)
 126                 return ret;
 127 
 128         writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);
 129 
 130         return insn->n;
 131 }
 132 
 133 /* ripped from mite.h and mite_setup2() to avoid mite dependency */
 134 #define MITE_IODWBSR    0xc0     /* IO Device Window Base Size Register */
 135 #define WENAB           BIT(7) /* window enable */
 136 
 137 static int ni_670x_mite_init(struct pci_dev *pcidev)
 138 {
 139         void __iomem *mite_base;
 140         u32 main_phys_addr;
 141 
 142         /* ioremap the MITE registers (BAR 0) temporarily */
 143         mite_base = pci_ioremap_bar(pcidev, 0);
 144         if (!mite_base)
 145                 return -ENOMEM;
 146 
 147         /* set data window to main registers (BAR 1) */
 148         main_phys_addr = pci_resource_start(pcidev, 1);
 149         writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);
 150 
 151         /* finished with MITE registers */
 152         iounmap(mite_base);
 153         return 0;
 154 }
 155 
 156 static int ni_670x_auto_attach(struct comedi_device *dev,
 157                                unsigned long context)
 158 {
 159         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 160         const struct ni_670x_board *board = NULL;
 161         struct ni_670x_private *devpriv;
 162         struct comedi_subdevice *s;
 163         int ret;
 164         int i;
 165 
 166         if (context < ARRAY_SIZE(ni_670x_boards))
 167                 board = &ni_670x_boards[context];
 168         if (!board)
 169                 return -ENODEV;
 170         dev->board_ptr = board;
 171         dev->board_name = board->name;
 172 
 173         ret = comedi_pci_enable(dev);
 174         if (ret)
 175                 return ret;
 176 
 177         devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 178         if (!devpriv)
 179                 return -ENOMEM;
 180 
 181         ret = ni_670x_mite_init(pcidev);
 182         if (ret)
 183                 return ret;
 184 
 185         dev->mmio = pci_ioremap_bar(pcidev, 1);
 186         if (!dev->mmio)
 187                 return -ENOMEM;
 188 
 189         ret = comedi_alloc_subdevices(dev, 2);
 190         if (ret)
 191                 return ret;
 192 
 193         s = &dev->subdevices[0];
 194         /* analog output subdevice */
 195         s->type = COMEDI_SUBD_AO;
 196         s->subdev_flags = SDF_WRITABLE;
 197         s->n_chan = board->ao_chans;
 198         s->maxdata = 0xffff;
 199         if (s->n_chan == 32) {
 200                 const struct comedi_lrange **range_table_list;
 201 
 202                 range_table_list = kmalloc_array(32,
 203                                                  sizeof(struct comedi_lrange *),
 204                                                  GFP_KERNEL);
 205                 if (!range_table_list)
 206                         return -ENOMEM;
 207                 s->range_table_list = range_table_list;
 208                 for (i = 0; i < 16; i++) {
 209                         range_table_list[i] = &range_bipolar10;
 210                         range_table_list[16 + i] = &range_0_20mA;
 211                 }
 212         } else {
 213                 s->range_table = &range_bipolar10;
 214         }
 215         s->insn_write = ni_670x_ao_insn_write;
 216 
 217         ret = comedi_alloc_subdev_readback(s);
 218         if (ret)
 219                 return ret;
 220 
 221         s = &dev->subdevices[1];
 222         /* digital i/o subdevice */
 223         s->type = COMEDI_SUBD_DIO;
 224         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 225         s->n_chan = 8;
 226         s->maxdata = 1;
 227         s->range_table = &range_digital;
 228         s->insn_bits = ni_670x_dio_insn_bits;
 229         s->insn_config = ni_670x_dio_insn_config;
 230 
 231         /* Config of misc registers */
 232         writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
 233         /* Config of ao registers */
 234         writel(0x00, dev->mmio + AO_CONTROL_OFFSET);
 235 
 236         return 0;
 237 }
 238 
 239 static void ni_670x_detach(struct comedi_device *dev)
 240 {
 241         struct comedi_subdevice *s;
 242 
 243         comedi_pci_detach(dev);
 244         if (dev->n_subdevices) {
 245                 s = &dev->subdevices[0];
 246                 if (s)
 247                         kfree(s->range_table_list);
 248         }
 249 }
 250 
 251 static struct comedi_driver ni_670x_driver = {
 252         .driver_name    = "ni_670x",
 253         .module         = THIS_MODULE,
 254         .auto_attach    = ni_670x_auto_attach,
 255         .detach         = ni_670x_detach,
 256 };
 257 
 258 static int ni_670x_pci_probe(struct pci_dev *dev,
 259                              const struct pci_device_id *id)
 260 {
 261         return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
 262 }
 263 
 264 static const struct pci_device_id ni_670x_pci_table[] = {
 265         { PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
 266         { PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
 267         { PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
 268         { 0 }
 269 };
 270 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
 271 
 272 static struct pci_driver ni_670x_pci_driver = {
 273         .name           = "ni_670x",
 274         .id_table       = ni_670x_pci_table,
 275         .probe          = ni_670x_pci_probe,
 276         .remove         = comedi_pci_auto_unconfig,
 277 };
 278 module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
 279 
 280 MODULE_AUTHOR("Comedi http://www.comedi.org");
 281 MODULE_DESCRIPTION("Comedi low-level driver");
 282 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/staging/comedi/drivers/ni_670x.c

DEFINITIONS
