diff options
Diffstat (limited to '')
-rw-r--r-- | drivers/comedi/drivers/dyna_pci10xx.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/dyna_pci10xx.c b/drivers/comedi/drivers/dyna_pci10xx.c new file mode 100644 index 000000000..407a038fb --- /dev/null +++ b/drivers/comedi/drivers/dyna_pci10xx.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * comedi/drivers/dyna_pci10xx.c + * Copyright (C) 2011 Prashant Shah, pshah.mumbai@gmail.com + */ + +/* + * Driver: dyna_pci10xx + * Description: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/ + * Devices: [Dynalog] PCI-1050 (dyna_pci1050) + * Author: Prashant Shah <pshah.mumbai@gmail.com> + * Status: Stable + * + * Developed at Automation Labs, Chemical Dept., IIT Bombay, India. + * Prof. Kannan Moudgalya <kannan@iitb.ac.in> + * http://www.iitb.ac.in + * + * Notes : + * - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and + * they are using the PLX Technlogies Vendor ID since that is the PCI Chip + * used in the card. + * - Dynalog India Pvt. Ltd. has provided the internal register specification + * for their cards in their manuals. + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/comedi/comedi_pci.h> + +#define READ_TIMEOUT 50 + +static const struct comedi_lrange range_pci1050_ai = { + 3, { + BIP_RANGE(10), + BIP_RANGE(5), + UNI_RANGE(10) + } +}; + +static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 }; + +struct dyna_pci10xx_private { + struct mutex mutex; + unsigned long BADR3; +}; + +static int dyna_pci10xx_ai_eoc(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned long context) +{ + unsigned int status; + + status = inw_p(dev->iobase); + if (status & BIT(15)) + return 0; + return -EBUSY; +} + +static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct dyna_pci10xx_private *devpriv = dev->private; + int n; + u16 d = 0; + int ret = 0; + unsigned int chan, range; + + /* get the channel number and range */ + chan = CR_CHAN(insn->chanspec); + range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))]; + + mutex_lock(&devpriv->mutex); + /* convert n samples */ + for (n = 0; n < insn->n; n++) { + /* trigger conversion */ + smp_mb(); + outw_p(0x0000 + range + chan, dev->iobase + 2); + usleep_range(10, 20); + + ret = comedi_timeout(dev, s, insn, dyna_pci10xx_ai_eoc, 0); + if (ret) + break; + + /* read data */ + d = inw_p(dev->iobase); + /* mask the first 4 bits - EOC bits */ + d &= 0x0FFF; + data[n] = d; + } + mutex_unlock(&devpriv->mutex); + + /* return the number of samples read/written */ + return ret ? ret : n; +} + +/* analog output callback */ +static int dyna_pci10xx_insn_write_ao(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct dyna_pci10xx_private *devpriv = dev->private; + int n; + + mutex_lock(&devpriv->mutex); + for (n = 0; n < insn->n; n++) { + smp_mb(); + /* trigger conversion and write data */ + outw_p(data[n], dev->iobase); + usleep_range(10, 20); + } + mutex_unlock(&devpriv->mutex); + return n; +} + +/* digital input bit interface */ +static int dyna_pci10xx_di_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct dyna_pci10xx_private *devpriv = dev->private; + u16 d = 0; + + mutex_lock(&devpriv->mutex); + smp_mb(); + d = inw_p(devpriv->BADR3); + usleep_range(10, 100); + + /* on return the data[0] contains output and data[1] contains input */ + data[1] = d; + data[0] = s->state; + mutex_unlock(&devpriv->mutex); + return insn->n; +} + +static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct dyna_pci10xx_private *devpriv = dev->private; + + mutex_lock(&devpriv->mutex); + if (comedi_dio_update_state(s, data)) { + smp_mb(); + outw_p(s->state, devpriv->BADR3); + usleep_range(10, 100); + } + + data[1] = s->state; + mutex_unlock(&devpriv->mutex); + + return insn->n; +} + +static int dyna_pci10xx_auto_attach(struct comedi_device *dev, + unsigned long context_unused) +{ + struct pci_dev *pcidev = comedi_to_pci_dev(dev); + struct dyna_pci10xx_private *devpriv; + struct comedi_subdevice *s; + int ret; + + devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); + if (!devpriv) + return -ENOMEM; + + ret = comedi_pci_enable(dev); + if (ret) + return ret; + dev->iobase = pci_resource_start(pcidev, 2); + devpriv->BADR3 = pci_resource_start(pcidev, 3); + + mutex_init(&devpriv->mutex); + + ret = comedi_alloc_subdevices(dev, 4); + if (ret) + return ret; + + /* analog input */ + s = &dev->subdevices[0]; + s->type = COMEDI_SUBD_AI; + s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF; + s->n_chan = 16; + s->maxdata = 0x0FFF; + s->range_table = &range_pci1050_ai; + s->insn_read = dyna_pci10xx_insn_read_ai; + + /* analog output */ + s = &dev->subdevices[1]; + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE; + s->n_chan = 1; + s->maxdata = 0x0FFF; + s->range_table = &range_unipolar10; + s->insn_write = dyna_pci10xx_insn_write_ao; + + /* digital input */ + s = &dev->subdevices[2]; + s->type = COMEDI_SUBD_DI; + s->subdev_flags = SDF_READABLE; + s->n_chan = 16; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_bits = dyna_pci10xx_di_insn_bits; + + /* digital output */ + s = &dev->subdevices[3]; + s->type = COMEDI_SUBD_DO; + s->subdev_flags = SDF_WRITABLE; + s->n_chan = 16; + s->maxdata = 1; + s->range_table = &range_digital; + s->state = 0; + s->insn_bits = dyna_pci10xx_do_insn_bits; + + return 0; +} + +static void dyna_pci10xx_detach(struct comedi_device *dev) +{ + struct dyna_pci10xx_private *devpriv = dev->private; + + comedi_pci_detach(dev); + if (devpriv) + mutex_destroy(&devpriv->mutex); +} + +static struct comedi_driver dyna_pci10xx_driver = { + .driver_name = "dyna_pci10xx", + .module = THIS_MODULE, + .auto_attach = dyna_pci10xx_auto_attach, + .detach = dyna_pci10xx_detach, +}; + +static int dyna_pci10xx_pci_probe(struct pci_dev *dev, + const struct pci_device_id *id) +{ + return comedi_pci_auto_config(dev, &dyna_pci10xx_driver, + id->driver_data); +} + +static const struct pci_device_id dyna_pci10xx_pci_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table); + +static struct pci_driver dyna_pci10xx_pci_driver = { + .name = "dyna_pci10xx", + .id_table = dyna_pci10xx_pci_table, + .probe = dyna_pci10xx_pci_probe, + .remove = comedi_pci_auto_unconfig, +}; +module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Prashant Shah <pshah.mumbai@gmail.com>"); +MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards"); |