/* * comedi/drivers/mf6x4.c * Driver for Humusoft MF634 and MF624 Data acquisition cards * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) 2000 David A. Schleef * * 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. */ /* * Driver: mf6x4 * Description: Humusoft MF634 and MF624 Data acquisition card driver * Devices: Humusoft MF634, Humusoft MF624 * Author: Rostislav Lisovy * Status: works * Updated: * Configuration Options: none */ #include #include #include #include "../comedidev.h" /* Registers present in BAR0 memory region */ #define MF624_GPIOC_R 0x54 #define MF6X4_GPIOC_EOLC /* End Of Last Conversion */ (1 << 17) #define MF6X4_GPIOC_LDAC /* Load DACs */ (1 << 23) #define MF6X4_GPIOC_DACEN (1 << 26) /* BAR1 registers */ #define MF6X4_DIN_R 0x10 #define MF6X4_DIN_M 0xff #define MF6X4_DOUT_R 0x10 #define MF6X4_DOUT_M 0xff #define MF6X4_ADSTART_R 0x20 #define MF6X4_ADDATA_R 0x00 #define MF6X4_ADCTRL_R 0x00 #define MF6X4_ADCTRL_M 0xff #define MF6X4_DA0_R 0x20 #define MF6X4_DA1_R 0x22 #define MF6X4_DA2_R 0x24 #define MF6X4_DA3_R 0x26 #define MF6X4_DA4_R 0x28 #define MF6X4_DA5_R 0x2a #define MF6X4_DA6_R 0x2c #define MF6X4_DA7_R 0x2e /* Map DAC cahnnel id to real HW-dependent offset value */ #define MF6X4_DAC_R(x) (0x20 + ((x) * 2)) /* BAR2 registers */ #define MF634_GPIOC_R 0x68 enum mf6x4_boardid { BOARD_MF634, BOARD_MF624, }; struct mf6x4_board { const char *name; unsigned int bar_nums[3]; /* We need to keep track of the order of BARs used by the cards */ }; static const struct mf6x4_board mf6x4_boards[] = { [BOARD_MF634] = { .name = "mf634", .bar_nums = {0, 2, 3}, }, [BOARD_MF624] = { .name = "mf624", .bar_nums = {0, 2, 4}, }, }; struct mf6x4_private { /* * Documentation for both MF634 and MF624 describes registers * present in BAR0, 1 and 2 regions. * The real (i.e. in HW) BAR numbers are different for MF624 * and MF634 yet we will call them 0, 1, 2 */ void __iomem *bar0_mem; void __iomem *bar2_mem; /* * This configuration register has the same function and fields * for both cards however it lies in different BARs on different * offsets -- this variable makes the access easier */ void __iomem *gpioc_R; }; static int mf6x4_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { data[1] = ioread16(dev->mmio + MF6X4_DIN_R) & MF6X4_DIN_M; return insn->n; } static int mf6x4_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { if (comedi_dio_update_state(s, data)) iowrite16(s->state & MF6X4_DOUT_M, dev->mmio + MF6X4_DOUT_R); data[1] = s->state; return insn->n; } static int mf6x4_ai_eoc(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned long context) { struct mf6x4_private *devpriv = dev->private; unsigned int status; status = ioread32(devpriv->gpioc_R); if (status & MF6X4_GPIOC_EOLC) return 0; return -EBUSY; } static int mf6x4_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { int chan = CR_CHAN(insn->chanspec); int ret; int i; int d; /* Set the ADC channel number in the scan list */ iowrite16((1 << chan) & MF6X4_ADCTRL_M, dev->mmio + MF6X4_ADCTRL_R); for (i = 0; i < insn->n; i++) { /* Trigger ADC conversion by reading ADSTART */ ioread16(dev->mmio + MF6X4_ADSTART_R); ret = comedi_timeout(dev, s, insn, mf6x4_ai_eoc, 0); if (ret) return ret; /* Read the actual value */ d = ioread16(dev->mmio + MF6X4_ADDATA_R); d &= s->maxdata; data[i] = d; } iowrite16(0x0, dev->mmio + MF6X4_ADCTRL_R); return insn->n; } static int mf6x4_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { struct mf6x4_private *devpriv = dev->private; unsigned int chan = CR_CHAN(insn->chanspec); unsigned int val = s->readback[chan]; uint32_t gpioc; int i; /* Enable instantaneous update of converters outputs + Enable DACs */ gpioc = ioread32(devpriv->gpioc_R); iowrite32((gpioc & ~MF6X4_GPIOC_LDAC) | MF6X4_GPIOC_DACEN, devpriv->gpioc_R); for (i = 0; i < insn->n; i++) { val = data[i]; iowrite16(val, dev->mmio + MF6X4_DAC_R(chan)); } s->readback[chan] = val; return insn->n; } static int mf6x4_auto_attach(struct comedi_device *dev, unsigned long context) { struct pci_dev *pcidev = comedi_to_pci_dev(dev); const struct mf6x4_board *board = NULL; struct mf6x4_private *devpriv; struct comedi_subdevice *s; int ret; if (context < ARRAY_SIZE(mf6x4_boards)) board = &mf6x4_boards[context]; else return -ENODEV; dev->board_ptr = board; dev->board_name = board->name; ret = comedi_pci_enable(dev); if (ret) return ret; devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); if (!devpriv) return -ENOMEM; devpriv->bar0_mem = pci_ioremap_bar(pcidev, board->bar_nums[0]); if (!devpriv->bar0_mem) return -ENODEV; dev->mmio = pci_ioremap_bar(pcidev, board->bar_nums[1]); if (!dev->mmio) return -ENODEV; devpriv->bar2_mem = pci_ioremap_bar(pcidev, board->bar_nums[2]); if (!devpriv->bar2_mem) return -ENODEV; if (board == &mf6x4_boards[BOARD_MF634]) devpriv->gpioc_R = devpriv->bar2_mem + MF634_GPIOC_R; else devpriv->gpioc_R = devpriv->bar0_mem + MF624_GPIOC_R; ret = comedi_alloc_subdevices(dev, 4); if (ret) return ret; /* ADC */ s = &dev->subdevices[0]; s->type = COMEDI_SUBD_AI; s->subdev_flags = SDF_READABLE | SDF_GROUND; s->n_chan = 8; s->maxdata = 0x3fff; /* 14 bits ADC */ s->range_table = &range_bipolar10; s->insn_read = mf6x4_ai_insn_read; /* DAC */ s = &dev->subdevices[1]; s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE; s->n_chan = 8; s->maxdata = 0x3fff; /* 14 bits DAC */ s->range_table = &range_bipolar10; s->insn_write = mf6x4_ao_insn_write; ret = comedi_alloc_subdev_readback(s); if (ret) return ret; /* DIN */ s = &dev->subdevices[2]; s->type = COMEDI_SUBD_DI; s->subdev_flags = SDF_READABLE; s->n_chan = 8; s->maxdata = 1; s->range_table = &range_digital; s->insn_bits = mf6x4_di_insn_bits; /* DOUT */ s = &dev->subdevices[3]; s->type = COMEDI_SUBD_DO; s->subdev_flags = SDF_WRITABLE; s->n_chan = 8; s->maxdata = 1; s->range_table = &range_digital; s->insn_bits = mf6x4_do_insn_bits; return 0; } static void mf6x4_detach(struct comedi_device *dev) { struct mf6x4_private *devpriv = dev->private; if (devpriv) { if (devpriv->bar0_mem) iounmap(devpriv->bar0_mem); if (devpriv->bar2_mem) iounmap(devpriv->bar2_mem); } comedi_pci_detach(dev); } static struct comedi_driver mf6x4_driver = { .driver_name = "mf6x4", .module = THIS_MODULE, .auto_attach = mf6x4_auto_attach, .detach = mf6x4_detach, }; static int mf6x4_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { return comedi_pci_auto_config(dev, &mf6x4_driver, id->driver_data); } static const struct pci_device_id mf6x4_pci_table[] = { { PCI_VDEVICE(HUMUSOFT, 0x0634), BOARD_MF634 }, { PCI_VDEVICE(HUMUSOFT, 0x0624), BOARD_MF624 }, { 0 } }; MODULE_DEVICE_TABLE(pci, mf6x4_pci_table); static struct pci_driver mf6x4_pci_driver = { .name = "mf6x4", .id_table = mf6x4_pci_table, .probe = mf6x4_pci_probe, .remove = comedi_pci_auto_unconfig, }; module_comedi_pci_driver(mf6x4_driver, mf6x4_pci_driver); MODULE_AUTHOR("Rostislav Lisovy "); MODULE_DESCRIPTION("Comedi MF634 and MF624 DAQ cards driver"); MODULE_LICENSE("GPL");