diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/icp_multi.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/icp_multi.c | 336 |
1 files changed, 0 insertions, 336 deletions
diff --git a/drivers/staging/comedi/drivers/icp_multi.c b/drivers/staging/comedi/drivers/icp_multi.c deleted file mode 100644 index 16d2b78de83c..000000000000 --- a/drivers/staging/comedi/drivers/icp_multi.c +++ /dev/null @@ -1,336 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * icp_multi.c - * Comedi driver for Inova ICP_MULTI board - * - * COMEDI - Linux Control and Measurement Device Interface - * Copyright (C) 1997-2002 David A. Schleef <ds@schleef.org> - */ - -/* - * Driver: icp_multi - * Description: Inova ICP_MULTI - * Devices: [Inova] ICP_MULTI (icp_multi) - * Author: Anne Smorthit <anne.smorthit@sfwte.ch> - * Status: works - * - * Configuration options: not applicable, uses PCI auto config - * - * The driver works for analog input and output and digital input and - * output. It does not work with interrupts or with the counters. Currently - * no support for DMA. - * - * It has 16 single-ended or 8 differential Analogue Input channels with - * 12-bit resolution. Ranges : 5V, 10V, +/-5V, +/-10V, 0..20mA and 4..20mA. - * Input ranges can be individually programmed for each channel. Voltage or - * current measurement is selected by jumper. - * - * There are 4 x 12-bit Analogue Outputs. Ranges : 5V, 10V, +/-5V, +/-10V - * - * 16 x Digital Inputs, 24V - * - * 8 x Digital Outputs, 24V, 1A - * - * 4 x 16-bit counters - not implemented - */ - -#include <linux/module.h> -#include <linux/delay.h> - -#include "../comedi_pci.h" - -#define ICP_MULTI_ADC_CSR 0x00 /* R/W: ADC command/status register */ -#define ICP_MULTI_ADC_CSR_ST BIT(0) /* Start ADC */ -#define ICP_MULTI_ADC_CSR_BSY BIT(0) /* ADC busy */ -#define ICP_MULTI_ADC_CSR_BI BIT(4) /* Bipolar input range */ -#define ICP_MULTI_ADC_CSR_RA BIT(5) /* Input range 0 = 5V, 1 = 10V */ -#define ICP_MULTI_ADC_CSR_DI BIT(6) /* Input mode 1 = differential */ -#define ICP_MULTI_ADC_CSR_DI_CHAN(x) (((x) & 0x7) << 9) -#define ICP_MULTI_ADC_CSR_SE_CHAN(x) (((x) & 0xf) << 8) -#define ICP_MULTI_AI 2 /* R: Analogue input data */ -#define ICP_MULTI_DAC_CSR 0x04 /* R/W: DAC command/status register */ -#define ICP_MULTI_DAC_CSR_ST BIT(0) /* Start DAC */ -#define ICP_MULTI_DAC_CSR_BSY BIT(0) /* DAC busy */ -#define ICP_MULTI_DAC_CSR_BI BIT(4) /* Bipolar output range */ -#define ICP_MULTI_DAC_CSR_RA BIT(5) /* Output range 0 = 5V, 1 = 10V */ -#define ICP_MULTI_DAC_CSR_CHAN(x) (((x) & 0x3) << 8) -#define ICP_MULTI_AO 6 /* R/W: Analogue output data */ -#define ICP_MULTI_DI 8 /* R/W: Digital inputs */ -#define ICP_MULTI_DO 0x0A /* R/W: Digital outputs */ -#define ICP_MULTI_INT_EN 0x0c /* R/W: Interrupt enable register */ -#define ICP_MULTI_INT_STAT 0x0e /* R/W: Interrupt status register */ -#define ICP_MULTI_INT_ADC_RDY BIT(0) /* A/D conversion ready interrupt */ -#define ICP_MULTI_INT_DAC_RDY BIT(1) /* D/A conversion ready interrupt */ -#define ICP_MULTI_INT_DOUT_ERR BIT(2) /* Digital output error interrupt */ -#define ICP_MULTI_INT_DIN_STAT BIT(3) /* Digital input status change int. */ -#define ICP_MULTI_INT_CIE0 BIT(4) /* Counter 0 overrun interrupt */ -#define ICP_MULTI_INT_CIE1 BIT(5) /* Counter 1 overrun interrupt */ -#define ICP_MULTI_INT_CIE2 BIT(6) /* Counter 2 overrun interrupt */ -#define ICP_MULTI_INT_CIE3 BIT(7) /* Counter 3 overrun interrupt */ -#define ICP_MULTI_INT_MASK 0xff /* All interrupts */ -#define ICP_MULTI_CNTR0 0x10 /* R/W: Counter 0 */ -#define ICP_MULTI_CNTR1 0x12 /* R/W: counter 1 */ -#define ICP_MULTI_CNTR2 0x14 /* R/W: Counter 2 */ -#define ICP_MULTI_CNTR3 0x16 /* R/W: Counter 3 */ - -/* analog input and output have the same range options */ -static const struct comedi_lrange icp_multi_ranges = { - 4, { - UNI_RANGE(5), - UNI_RANGE(10), - BIP_RANGE(5), - BIP_RANGE(10) - } -}; - -static const char range_codes_analog[] = { 0x00, 0x20, 0x10, 0x30 }; - -static int icp_multi_ai_eoc(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned long context) -{ - unsigned int status; - - status = readw(dev->mmio + ICP_MULTI_ADC_CSR); - if ((status & ICP_MULTI_ADC_CSR_BSY) == 0) - return 0; - return -EBUSY; -} - -static int icp_multi_ai_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - unsigned int chan = CR_CHAN(insn->chanspec); - unsigned int range = CR_RANGE(insn->chanspec); - unsigned int aref = CR_AREF(insn->chanspec); - unsigned int adc_csr; - int ret = 0; - int n; - - /* Set mode and range data for specified channel */ - if (aref == AREF_DIFF) { - adc_csr = ICP_MULTI_ADC_CSR_DI_CHAN(chan) | - ICP_MULTI_ADC_CSR_DI; - } else { - adc_csr = ICP_MULTI_ADC_CSR_SE_CHAN(chan); - } - adc_csr |= range_codes_analog[range]; - writew(adc_csr, dev->mmio + ICP_MULTI_ADC_CSR); - - for (n = 0; n < insn->n; n++) { - /* Set start ADC bit */ - writew(adc_csr | ICP_MULTI_ADC_CSR_ST, - dev->mmio + ICP_MULTI_ADC_CSR); - - udelay(1); - - /* Wait for conversion to complete, or get fed up waiting */ - ret = comedi_timeout(dev, s, insn, icp_multi_ai_eoc, 0); - if (ret) - break; - - data[n] = (readw(dev->mmio + ICP_MULTI_AI) >> 4) & 0x0fff; - } - - return ret ? ret : n; -} - -static int icp_multi_ao_ready(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned long context) -{ - unsigned int status; - - status = readw(dev->mmio + ICP_MULTI_DAC_CSR); - if ((status & ICP_MULTI_DAC_CSR_BSY) == 0) - return 0; - return -EBUSY; -} - -static int icp_multi_ao_insn_write(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - unsigned int chan = CR_CHAN(insn->chanspec); - unsigned int range = CR_RANGE(insn->chanspec); - unsigned int dac_csr; - int i; - - /* Select channel and range */ - dac_csr = ICP_MULTI_DAC_CSR_CHAN(chan); - dac_csr |= range_codes_analog[range]; - writew(dac_csr, dev->mmio + ICP_MULTI_DAC_CSR); - - for (i = 0; i < insn->n; i++) { - unsigned int val = data[i]; - int ret; - - /* Wait for analog output to be ready for new data */ - ret = comedi_timeout(dev, s, insn, icp_multi_ao_ready, 0); - if (ret) - return ret; - - writew(val, dev->mmio + ICP_MULTI_AO); - - /* Set start conversion bit to write data to channel */ - writew(dac_csr | ICP_MULTI_DAC_CSR_ST, - dev->mmio + ICP_MULTI_DAC_CSR); - - s->readback[chan] = val; - } - - return insn->n; -} - -static int icp_multi_di_insn_bits(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - data[1] = readw(dev->mmio + ICP_MULTI_DI); - - return insn->n; -} - -static int icp_multi_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)) - writew(s->state, dev->mmio + ICP_MULTI_DO); - - data[1] = s->state; - - return insn->n; -} - -static int icp_multi_reset(struct comedi_device *dev) -{ - int i; - - /* Disable all interrupts and clear any requests */ - writew(0, dev->mmio + ICP_MULTI_INT_EN); - writew(ICP_MULTI_INT_MASK, dev->mmio + ICP_MULTI_INT_STAT); - - /* Reset the analog output channels to 0V */ - for (i = 0; i < 4; i++) { - unsigned int dac_csr = ICP_MULTI_DAC_CSR_CHAN(i); - - /* Select channel and 0..5V range */ - writew(dac_csr, dev->mmio + ICP_MULTI_DAC_CSR); - - /* Output 0V */ - writew(0, dev->mmio + ICP_MULTI_AO); - - /* Set start conversion bit to write data to channel */ - writew(dac_csr | ICP_MULTI_DAC_CSR_ST, - dev->mmio + ICP_MULTI_DAC_CSR); - udelay(1); - } - - /* Digital outputs to 0 */ - writew(0, dev->mmio + ICP_MULTI_DO); - - return 0; -} - -static int icp_multi_auto_attach(struct comedi_device *dev, - unsigned long context_unused) -{ - struct pci_dev *pcidev = comedi_to_pci_dev(dev); - struct comedi_subdevice *s; - int ret; - - ret = comedi_pci_enable(dev); - if (ret) - return ret; - - dev->mmio = pci_ioremap_bar(pcidev, 2); - if (!dev->mmio) - return -ENOMEM; - - ret = comedi_alloc_subdevices(dev, 4); - if (ret) - return ret; - - icp_multi_reset(dev); - - /* Analog Input subdevice */ - s = &dev->subdevices[0]; - s->type = COMEDI_SUBD_AI; - s->subdev_flags = SDF_READABLE | SDF_COMMON | SDF_GROUND | SDF_DIFF; - s->n_chan = 16; - s->maxdata = 0x0fff; - s->range_table = &icp_multi_ranges; - s->insn_read = icp_multi_ai_insn_read; - - /* Analog Output subdevice */ - s = &dev->subdevices[1]; - s->type = COMEDI_SUBD_AO; - s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON; - s->n_chan = 4; - s->maxdata = 0x0fff; - s->range_table = &icp_multi_ranges; - s->insn_write = icp_multi_ao_insn_write; - - ret = comedi_alloc_subdev_readback(s); - if (ret) - return ret; - - /* Digital Input subdevice */ - 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 = icp_multi_di_insn_bits; - - /* Digital Output subdevice */ - 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 = icp_multi_do_insn_bits; - - return 0; -} - -static struct comedi_driver icp_multi_driver = { - .driver_name = "icp_multi", - .module = THIS_MODULE, - .auto_attach = icp_multi_auto_attach, - .detach = comedi_pci_detach, -}; - -static int icp_multi_pci_probe(struct pci_dev *dev, - const struct pci_device_id *id) -{ - return comedi_pci_auto_config(dev, &icp_multi_driver, id->driver_data); -} - -static const struct pci_device_id icp_multi_pci_table[] = { - { PCI_DEVICE(PCI_VENDOR_ID_ICP, 0x8000) }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, icp_multi_pci_table); - -static struct pci_driver icp_multi_pci_driver = { - .name = "icp_multi", - .id_table = icp_multi_pci_table, - .probe = icp_multi_pci_probe, - .remove = comedi_pci_auto_unconfig, -}; -module_comedi_pci_driver(icp_multi_driver, icp_multi_pci_driver); - -MODULE_AUTHOR("Comedi https://www.comedi.org"); -MODULE_DESCRIPTION("Comedi driver for Inova ICP_MULTI board"); -MODULE_LICENSE("GPL"); |