diff options
Diffstat (limited to 'drivers/comedi/drivers/addi_apci_3501.c')
| -rw-r--r-- | drivers/comedi/drivers/addi_apci_3501.c | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/addi_apci_3501.c b/drivers/comedi/drivers/addi_apci_3501.c new file mode 100644 index 000000000..ecb5552f1 --- /dev/null +++ b/drivers/comedi/drivers/addi_apci_3501.c @@ -0,0 +1,417 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * addi_apci_3501.c + * Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module. + * Project manager: Eric Stolz + * + * ADDI-DATA GmbH + * Dieselstrasse 3 + * D-77833 Ottersweier + * Tel: +19(0)7223/9493-0 + * Fax: +49(0)7223/9493-92 + * http://www.addi-data.com + * info@addi-data.com + */ + +/* + * Driver: addi_apci_3501 + * Description: ADDI-DATA APCI-3501 Analog output board + * Devices: [ADDI-DATA] APCI-3501 (addi_apci_3501) + * Author: H Hartley Sweeten <hsweeten@visionengravers.com> + * Updated: Mon, 20 Jun 2016 10:57:01 -0700 + * Status: untested + * + * Configuration Options: not applicable, uses comedi PCI auto config + * + * This board has the following features: + * - 4 or 8 analog output channels + * - 2 optically isolated digital inputs + * - 2 optically isolated digital outputs + * - 1 12-bit watchdog/timer + * + * There are 2 versions of the APCI-3501: + * - APCI-3501-4 4 analog output channels + * - APCI-3501-8 8 analog output channels + * + * These boards use the same PCI Vendor/Device IDs. The number of output + * channels used by this driver is determined by reading the EEPROM on + * the board. + * + * The watchdog/timer subdevice is not currently supported. + */ + +#include <linux/module.h> +#include <linux/comedi/comedi_pci.h> + +#include "amcc_s5933.h" + +/* + * PCI bar 1 register I/O map + */ +#define APCI3501_AO_CTRL_STATUS_REG 0x00 +#define APCI3501_AO_CTRL_BIPOLAR BIT(0) +#define APCI3501_AO_STATUS_READY BIT(8) +#define APCI3501_AO_DATA_REG 0x04 +#define APCI3501_AO_DATA_CHAN(x) ((x) << 0) +#define APCI3501_AO_DATA_VAL(x) ((x) << 8) +#define APCI3501_AO_DATA_BIPOLAR BIT(31) +#define APCI3501_AO_TRIG_SCS_REG 0x08 +#define APCI3501_TIMER_BASE 0x20 +#define APCI3501_DO_REG 0x40 +#define APCI3501_DI_REG 0x50 + +/* + * AMCC S5933 NVRAM + */ +#define NVRAM_USER_DATA_START 0x100 + +#define NVCMD_BEGIN_READ (0x7 << 5) +#define NVCMD_LOAD_LOW (0x4 << 5) +#define NVCMD_LOAD_HIGH (0x5 << 5) + +/* + * Function types stored in the eeprom + */ +#define EEPROM_DIGITALINPUT 0 +#define EEPROM_DIGITALOUTPUT 1 +#define EEPROM_ANALOGINPUT 2 +#define EEPROM_ANALOGOUTPUT 3 +#define EEPROM_TIMER 4 +#define EEPROM_WATCHDOG 5 +#define EEPROM_TIMER_WATCHDOG_COUNTER 10 + +struct apci3501_private { + unsigned long amcc; + unsigned char timer_mode; +}; + +static const struct comedi_lrange apci3501_ao_range = { + 2, { + BIP_RANGE(10), + UNI_RANGE(10) + } +}; + +static int apci3501_wait_for_dac(struct comedi_device *dev) +{ + unsigned int status; + + do { + status = inl(dev->iobase + APCI3501_AO_CTRL_STATUS_REG); + } while (!(status & APCI3501_AO_STATUS_READY)); + + return 0; +} + +static int apci3501_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 cfg = APCI3501_AO_DATA_CHAN(chan); + int ret; + int i; + + /* + * All analog output channels have the same output range. + * 14-bit bipolar: 0-10V + * 13-bit unipolar: +/-10V + * Changing the range of one channel changes all of them! + */ + if (range) { + outl(0, dev->iobase + APCI3501_AO_CTRL_STATUS_REG); + } else { + cfg |= APCI3501_AO_DATA_BIPOLAR; + outl(APCI3501_AO_CTRL_BIPOLAR, + dev->iobase + APCI3501_AO_CTRL_STATUS_REG); + } + + for (i = 0; i < insn->n; i++) { + unsigned int val = data[i]; + + if (range == 1) { + if (data[i] > 0x1fff) { + dev_err(dev->class_dev, + "Unipolar resolution is only 13-bits\n"); + return -EINVAL; + } + } + + ret = apci3501_wait_for_dac(dev); + if (ret) + return ret; + + outl(cfg | APCI3501_AO_DATA_VAL(val), + dev->iobase + APCI3501_AO_DATA_REG); + + s->readback[chan] = val; + } + + return insn->n; +} + +static int apci3501_di_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + data[1] = inl(dev->iobase + APCI3501_DI_REG) & 0x3; + + return insn->n; +} + +static int apci3501_do_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + s->state = inl(dev->iobase + APCI3501_DO_REG); + + if (comedi_dio_update_state(s, data)) + outl(s->state, dev->iobase + APCI3501_DO_REG); + + data[1] = s->state; + + return insn->n; +} + +static void apci3501_eeprom_wait(unsigned long iobase) +{ + unsigned char val; + + do { + val = inb(iobase + AMCC_OP_REG_MCSR_NVCMD); + } while (val & 0x80); +} + +static unsigned short apci3501_eeprom_readw(unsigned long iobase, + unsigned short addr) +{ + unsigned short val = 0; + unsigned char tmp; + unsigned char i; + + /* Add the offset to the start of the user data */ + addr += NVRAM_USER_DATA_START; + + for (i = 0; i < 2; i++) { + /* Load the low 8 bit address */ + outb(NVCMD_LOAD_LOW, iobase + AMCC_OP_REG_MCSR_NVCMD); + apci3501_eeprom_wait(iobase); + outb((addr + i) & 0xff, iobase + AMCC_OP_REG_MCSR_NVDATA); + apci3501_eeprom_wait(iobase); + + /* Load the high 8 bit address */ + outb(NVCMD_LOAD_HIGH, iobase + AMCC_OP_REG_MCSR_NVCMD); + apci3501_eeprom_wait(iobase); + outb(((addr + i) >> 8) & 0xff, + iobase + AMCC_OP_REG_MCSR_NVDATA); + apci3501_eeprom_wait(iobase); + + /* Read the eeprom data byte */ + outb(NVCMD_BEGIN_READ, iobase + AMCC_OP_REG_MCSR_NVCMD); + apci3501_eeprom_wait(iobase); + tmp = inb(iobase + AMCC_OP_REG_MCSR_NVDATA); + apci3501_eeprom_wait(iobase); + + if (i == 0) + val |= tmp; + else + val |= (tmp << 8); + } + + return val; +} + +static int apci3501_eeprom_get_ao_n_chan(struct comedi_device *dev) +{ + struct apci3501_private *devpriv = dev->private; + unsigned char nfuncs; + int i; + + nfuncs = apci3501_eeprom_readw(devpriv->amcc, 10) & 0xff; + + /* Read functionality details */ + for (i = 0; i < nfuncs; i++) { + unsigned short offset = i * 4; + unsigned short addr; + unsigned char func; + unsigned short val; + + func = apci3501_eeprom_readw(devpriv->amcc, 12 + offset) & 0x3f; + addr = apci3501_eeprom_readw(devpriv->amcc, 14 + offset); + + if (func == EEPROM_ANALOGOUTPUT) { + val = apci3501_eeprom_readw(devpriv->amcc, addr + 10); + return (val >> 4) & 0x3ff; + } + } + return 0; +} + +static int apci3501_eeprom_insn_read(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + struct apci3501_private *devpriv = dev->private; + unsigned short addr = CR_CHAN(insn->chanspec); + unsigned int val; + unsigned int i; + + if (insn->n) { + /* No point reading the same EEPROM location more than once. */ + val = apci3501_eeprom_readw(devpriv->amcc, 2 * addr); + for (i = 0; i < insn->n; i++) + data[i] = val; + } + + return insn->n; +} + +static int apci3501_reset(struct comedi_device *dev) +{ + unsigned int val; + int chan; + int ret; + + /* Reset all digital outputs to "0" */ + outl(0x0, dev->iobase + APCI3501_DO_REG); + + /* Default all analog outputs to 0V (bipolar) */ + outl(APCI3501_AO_CTRL_BIPOLAR, + dev->iobase + APCI3501_AO_CTRL_STATUS_REG); + val = APCI3501_AO_DATA_BIPOLAR | APCI3501_AO_DATA_VAL(0); + + /* Set all analog output channels */ + for (chan = 0; chan < 8; chan++) { + ret = apci3501_wait_for_dac(dev); + if (ret) { + dev_warn(dev->class_dev, + "%s: DAC not-ready for channel %i\n", + __func__, chan); + } else { + outl(val | APCI3501_AO_DATA_CHAN(chan), + dev->iobase + APCI3501_AO_DATA_REG); + } + } + + return 0; +} + +static int apci3501_auto_attach(struct comedi_device *dev, + unsigned long context_unused) +{ + struct pci_dev *pcidev = comedi_to_pci_dev(dev); + struct apci3501_private *devpriv; + struct comedi_subdevice *s; + int ao_n_chan; + int ret; + + devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); + if (!devpriv) + return -ENOMEM; + + ret = comedi_pci_enable(dev); + if (ret) + return ret; + + devpriv->amcc = pci_resource_start(pcidev, 0); + dev->iobase = pci_resource_start(pcidev, 1); + + ao_n_chan = apci3501_eeprom_get_ao_n_chan(dev); + + ret = comedi_alloc_subdevices(dev, 5); + if (ret) + return ret; + + /* Initialize the analog output subdevice */ + s = &dev->subdevices[0]; + if (ao_n_chan) { + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON; + s->n_chan = ao_n_chan; + s->maxdata = 0x3fff; + s->range_table = &apci3501_ao_range; + s->insn_write = apci3501_ao_insn_write; + + ret = comedi_alloc_subdev_readback(s); + if (ret) + return ret; + } else { + s->type = COMEDI_SUBD_UNUSED; + } + + /* Initialize the digital input subdevice */ + s = &dev->subdevices[1]; + s->type = COMEDI_SUBD_DI; + s->subdev_flags = SDF_READABLE; + s->n_chan = 2; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_bits = apci3501_di_insn_bits; + + /* Initialize the digital output subdevice */ + s = &dev->subdevices[2]; + s->type = COMEDI_SUBD_DO; + s->subdev_flags = SDF_WRITABLE; + s->n_chan = 2; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_bits = apci3501_do_insn_bits; + + /* Timer/Watchdog subdevice */ + s = &dev->subdevices[3]; + s->type = COMEDI_SUBD_UNUSED; + + /* Initialize the eeprom subdevice */ + s = &dev->subdevices[4]; + s->type = COMEDI_SUBD_MEMORY; + s->subdev_flags = SDF_READABLE | SDF_INTERNAL; + s->n_chan = 256; + s->maxdata = 0xffff; + s->insn_read = apci3501_eeprom_insn_read; + + apci3501_reset(dev); + return 0; +} + +static void apci3501_detach(struct comedi_device *dev) +{ + if (dev->iobase) + apci3501_reset(dev); + comedi_pci_detach(dev); +} + +static struct comedi_driver apci3501_driver = { + .driver_name = "addi_apci_3501", + .module = THIS_MODULE, + .auto_attach = apci3501_auto_attach, + .detach = apci3501_detach, +}; + +static int apci3501_pci_probe(struct pci_dev *dev, + const struct pci_device_id *id) +{ + return comedi_pci_auto_config(dev, &apci3501_driver, id->driver_data); +} + +static const struct pci_device_id apci3501_pci_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x3001) }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, apci3501_pci_table); + +static struct pci_driver apci3501_pci_driver = { + .name = "addi_apci_3501", + .id_table = apci3501_pci_table, + .probe = apci3501_pci_probe, + .remove = comedi_pci_auto_unconfig, +}; +module_comedi_pci_driver(apci3501_driver, apci3501_pci_driver); + +MODULE_DESCRIPTION("ADDI-DATA APCI-3501 Analog output board"); +MODULE_AUTHOR("Comedi https://www.comedi.org"); +MODULE_LICENSE("GPL"); |