--- /dev/null
+/*
+ comedi/drivers/icp_multi.c
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 1997-2002 David A. Schleef <ds@schleef.org>
+
+ 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.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/*
+Driver: icp_multi
+Description: Inova ICP_MULTI
+Author: Anne Smorthit <anne.smorthit@sfwte.ch>
+Devices: [Inova] ICP_MULTI (icp_multi)
+Status: works
+
+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
+
+Options:
+ [0] - PCI bus number - if bus number and slot number are 0,
+ then driver search for first unused card
+ [1] - PCI slot number
+*/
+
+#include "../comedidev.h"
+
+#include <linux/delay.h>
+#include <linux/pci.h>
+
+#include "icp_multi.h"
+
+#define DEVICE_ID 0x8000 /* Device ID */
+
+#define ICP_MULTI_EXTDEBUG
+
+// Hardware types of the cards
+#define TYPE_ICP_MULTI 0
+
+#define IORANGE_ICP_MULTI 32
+
+#define ICP_MULTI_ADC_CSR 0 /* R/W: ADC command/status register */
+#define ICP_MULTI_AI 2 /* R: Analogue input data */
+#define ICP_MULTI_DAC_CSR 4 /* R/W: DAC command/status register */
+#define ICP_MULTI_AO 6 /* R/W: Analogue output data */
+#define ICP_MULTI_DI 8 /* R/W: Digital inouts */
+#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_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 */
+
+#define ICP_MULTI_SIZE 0x20 /* 32 bytes */
+
+// Define bits from ADC command/status register
+#define ADC_ST 0x0001 /* Start ADC */
+#define ADC_BSY 0x0001 /* ADC busy */
+#define ADC_BI 0x0010 /* Bipolar input range 1 = bipolar */
+#define ADC_RA 0x0020 /* Input range 0 = 5V, 1 = 10V */
+#define ADC_DI 0x0040 /* Differential input mode 1 = differential */
+
+// Define bits from DAC command/status register
+#define DAC_ST 0x0001 /* Start DAC */
+#define DAC_BSY 0x0001 /* DAC busy */
+#define DAC_BI 0x0010 /* Bipolar input range 1 = bipolar */
+#define DAC_RA 0x0020 /* Input range 0 = 5V, 1 = 10V */
+
+// Define bits from interrupt enable/status registers
+#define ADC_READY 0x0001 /* A/d conversion ready interrupt */
+#define DAC_READY 0x0002 /* D/a conversion ready interrupt */
+#define DOUT_ERROR 0x0004 /* Digital output error interrupt */
+#define DIN_STATUS 0x0008 /* Digital input status change interrupt */
+#define CIE0 0x0010 /* Counter 0 overrun interrupt */
+#define CIE1 0x0020 /* Counter 1 overrun interrupt */
+#define CIE2 0x0040 /* Counter 2 overrun interrupt */
+#define CIE3 0x0080 /* Counter 3 overrun interrupt */
+
+// Useful definitions
+#define Status_IRQ 0x00ff // All interrupts
+
+// Define analogue range
+static const comedi_lrange range_analog = { 4, {
+ UNI_RANGE(5),
+ UNI_RANGE(10),
+ BIP_RANGE(5),
+ BIP_RANGE(10)
+ }
+};
+
+static const char range_codes_analog[] = { 0x00, 0x20, 0x10, 0x30 };
+
+/*
+==============================================================================
+ Forward declarations
+==============================================================================
+*/
+static int icp_multi_attach(comedi_device * dev, comedi_devconfig * it);
+static int icp_multi_detach(comedi_device * dev);
+
+/*
+==============================================================================
+ Data & Structure declarations
+==============================================================================
+*/
+static unsigned short pci_list_builded = 0; /*>0 list of card is known */
+
+typedef struct {
+ const char *name; // driver name
+ int device_id;
+ int iorange; // I/O range len
+ char have_irq; // 1=card support IRQ
+ char cardtype; // 0=ICP Multi
+ int n_aichan; // num of A/D chans
+ int n_aichand; // num of A/D chans in diff mode
+ int n_aochan; // num of D/A chans
+ int n_dichan; // num of DI chans
+ int n_dochan; // num of DO chans
+ int n_ctrs; // num of counters
+ int ai_maxdata; // resolution of A/D
+ int ao_maxdata; // resolution of D/A
+ const comedi_lrange *rangelist_ai; // rangelist for A/D
+ const char *rangecode; // range codes for programming
+ const comedi_lrange *rangelist_ao; // rangelist for D/A
+} boardtype;
+
+static const boardtype boardtypes[] = {
+ {"icp_multi", // Driver name
+ DEVICE_ID, // PCI device ID
+ IORANGE_ICP_MULTI, // I/O range length
+ 1, // 1=Card supports interrupts
+ TYPE_ICP_MULTI, // Card type = ICP MULTI
+ 16, // Num of A/D channels
+ 8, // Num of A/D channels in diff mode
+ 4, // Num of D/A channels
+ 16, // Num of digital inputs
+ 8, // Num of digital outputs
+ 4, // Num of counters
+ 0x0fff, // Resolution of A/D
+ 0x0fff, // Resolution of D/A
+ &range_analog, // Rangelist for A/D
+ range_codes_analog, // Range codes for programming
+ &range_analog}, // Rangelist for D/A
+};
+
+#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype))
+
+static comedi_driver driver_icp_multi = {
+ driver_name:"icp_multi",
+ module:THIS_MODULE,
+ attach:icp_multi_attach,
+ detach:icp_multi_detach,
+ num_names:n_boardtypes,
+ board_name:&boardtypes[0].name,
+ offset:sizeof(boardtype),
+};
+
+COMEDI_INITCLEANUP(driver_icp_multi);
+
+typedef struct {
+ struct pcilst_struct *card; // pointer to card
+ char valid; // card is usable
+ void *io_addr; // Pointer to mapped io address
+ resource_size_t phys_iobase; // Physical io address
+ unsigned int AdcCmdStatus; // ADC Command/Status register
+ unsigned int DacCmdStatus; // DAC Command/Status register
+ unsigned int IntEnable; // Interrupt Enable register
+ unsigned int IntStatus; // Interrupt Status register
+ unsigned int act_chanlist[32]; // list of scaned channel
+ unsigned char act_chanlist_len; // len of scanlist
+ unsigned char act_chanlist_pos; // actual position in MUX list
+ unsigned int *ai_chanlist; // actaul chanlist
+ sampl_t *ai_data; // data buffer
+ sampl_t ao_data[4]; // data output buffer
+ sampl_t di_data; // Digital input data
+ unsigned int do_data; // Remember digital output data
+} icp_multi_private;
+
+#define devpriv ((icp_multi_private *)dev->private)
+#define this_board ((const boardtype *)dev->board_ptr)
+
+/*
+==============================================================================
+ More forward declarations
+==============================================================================
+*/
+
+#if 0
+static int check_channel_list(comedi_device * dev, comedi_subdevice * s,
+ unsigned int *chanlist, unsigned int n_chan);
+#endif
+static void setup_channel_list(comedi_device * dev, comedi_subdevice * s,
+ unsigned int *chanlist, unsigned int n_chan);
+static int icp_multi_reset(comedi_device * dev);
+
+/*
+==============================================================================
+ Functions
+==============================================================================
+*/
+
+/*
+==============================================================================
+
+ Name: icp_multi_insn_read_ai
+
+ Description:
+ This function reads a single analogue input.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ comedi_insn *insn Pointer to current comedi instruction
+ lsampl_t *data Pointer to analogue input data
+
+ Returns:int Nmuber of instructions executed
+
+==============================================================================
+*/
+static int icp_multi_insn_read_ai(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int n, timeout;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: BGN: icp_multi_insn_read_ai(...)\n");
+#endif
+ // Disable A/D conversion ready interrupt
+ devpriv->IntEnable &= ~ADC_READY;
+ writew(devpriv->IntEnable, devpriv->io_addr + ICP_MULTI_INT_EN);
+
+ // Clear interrupt status
+ devpriv->IntStatus |= ADC_READY;
+ writew(devpriv->IntStatus, devpriv->io_addr + ICP_MULTI_INT_STAT);
+
+ // Set up appropriate channel, mode and range data, for specified channel
+ setup_channel_list(dev, s, &insn->chanspec, 1);
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp_multi A ST=%4x IO=%p\n",
+ readw(devpriv->io_addr + ICP_MULTI_ADC_CSR),
+ devpriv->io_addr + ICP_MULTI_ADC_CSR);
+#endif
+
+ for (n = 0; n < insn->n; n++) {
+ // Set start ADC bit
+ devpriv->AdcCmdStatus |= ADC_ST;
+ writew(devpriv->AdcCmdStatus,
+ devpriv->io_addr + ICP_MULTI_ADC_CSR);
+ devpriv->AdcCmdStatus &= ~ADC_ST;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi B n=%d ST=%4x\n", n,
+ readw(devpriv->io_addr + ICP_MULTI_ADC_CSR));
+#endif
+
+ comedi_udelay(1);
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi C n=%d ST=%4x\n", n,
+ readw(devpriv->io_addr + ICP_MULTI_ADC_CSR));
+#endif
+
+ // Wait for conversion to complete, or get fed up waiting
+ timeout = 100;
+ while (timeout--) {
+ if (!(readw(devpriv->io_addr +
+ ICP_MULTI_ADC_CSR) & ADC_BSY))
+ goto conv_finish;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ if (!(timeout % 10))
+ printk("icp multi D n=%d tm=%d ST=%4x\n", n,
+ timeout,
+ readw(devpriv->io_addr +
+ ICP_MULTI_ADC_CSR));
+#endif
+
+ comedi_udelay(1);
+ }
+
+ // If we reach here, a timeout has occurred
+ comedi_error(dev, "A/D insn timeout");
+
+ // Disable interrupt
+ devpriv->IntEnable &= ~ADC_READY;
+ writew(devpriv->IntEnable, devpriv->io_addr + ICP_MULTI_INT_EN);
+
+ // Clear interrupt status
+ devpriv->IntStatus |= ADC_READY;
+ writew(devpriv->IntStatus,
+ devpriv->io_addr + ICP_MULTI_INT_STAT);
+
+ // Clear data received
+ data[n] = 0;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: icp_multi_insn_read_ai(...) n=%d\n", n);
+#endif
+ return -ETIME;
+
+ conv_finish:
+ data[n] =
+ (readw(devpriv->io_addr + ICP_MULTI_AI) >> 4) & 0x0fff;
+ }
+
+ // Disable interrupt
+ devpriv->IntEnable &= ~ADC_READY;
+ writew(devpriv->IntEnable, devpriv->io_addr + ICP_MULTI_INT_EN);
+
+ // Clear interrupt status
+ devpriv->IntStatus |= ADC_READY;
+ writew(devpriv->IntStatus, devpriv->io_addr + ICP_MULTI_INT_STAT);
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: icp_multi_insn_read_ai(...) n=%d\n", n);
+#endif
+ return n;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_insn_write_ao
+
+ Description:
+ This function writes a single analogue output.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ comedi_insn *insn Pointer to current comedi instruction
+ lsampl_t *data Pointer to analogue output data
+
+ Returns:int Nmuber of instructions executed
+
+==============================================================================
+*/
+static int icp_multi_insn_write_ao(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int n, chan, range, timeout;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: BGN: icp_multi_insn_write_ao(...)\n");
+#endif
+ // Disable D/A conversion ready interrupt
+ devpriv->IntEnable &= ~DAC_READY;
+ writew(devpriv->IntEnable, devpriv->io_addr + ICP_MULTI_INT_EN);
+
+ // Clear interrupt status
+ devpriv->IntStatus |= DAC_READY;
+ writew(devpriv->IntStatus, devpriv->io_addr + ICP_MULTI_INT_STAT);
+
+ // Get channel number and range
+ chan = CR_CHAN(insn->chanspec);
+ range = CR_RANGE(insn->chanspec);
+
+ // Set up range and channel data
+ // Bit 4 = 1 : Bipolar
+ // Bit 5 = 0 : 5V
+ // Bit 5 = 1 : 10V
+ // Bits 8-9 : Channel number
+ devpriv->DacCmdStatus &= 0xfccf;
+ devpriv->DacCmdStatus |= this_board->rangecode[range];
+ devpriv->DacCmdStatus |= (chan << 8);
+
+ writew(devpriv->DacCmdStatus, devpriv->io_addr + ICP_MULTI_DAC_CSR);
+
+ for (n = 0; n < insn->n; n++) {
+ // Wait for analogue output data register to be ready for new data, or get fed up waiting
+ timeout = 100;
+ while (timeout--) {
+ if (!(readw(devpriv->io_addr +
+ ICP_MULTI_DAC_CSR) & DAC_BSY))
+ goto dac_ready;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ if (!(timeout % 10))
+ printk("icp multi A n=%d tm=%d ST=%4x\n", n,
+ timeout,
+ readw(devpriv->io_addr +
+ ICP_MULTI_DAC_CSR));
+#endif
+
+ comedi_udelay(1);
+ }
+
+ // If we reach here, a timeout has occurred
+ comedi_error(dev, "D/A insn timeout");
+
+ // Disable interrupt
+ devpriv->IntEnable &= ~DAC_READY;
+ writew(devpriv->IntEnable, devpriv->io_addr + ICP_MULTI_INT_EN);
+
+ // Clear interrupt status
+ devpriv->IntStatus |= DAC_READY;
+ writew(devpriv->IntStatus,
+ devpriv->io_addr + ICP_MULTI_INT_STAT);
+
+ // Clear data received
+ devpriv->ao_data[chan] = 0;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: icp_multi_insn_write_ao(...) n=%d\n", n);
+#endif
+ return -ETIME;
+
+ dac_ready:
+ // Write data to analogue output data register
+ writew(data[n], devpriv->io_addr + ICP_MULTI_AO);
+
+ // Set DAC_ST bit to write the data to selected channel
+ devpriv->DacCmdStatus |= DAC_ST;
+ writew(devpriv->DacCmdStatus,
+ devpriv->io_addr + ICP_MULTI_DAC_CSR);
+ devpriv->DacCmdStatus &= ~DAC_ST;
+
+ // Save analogue output data
+ devpriv->ao_data[chan] = data[n];
+ }
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: icp_multi_insn_write_ao(...) n=%d\n", n);
+#endif
+ return n;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_insn_read_ao
+
+ Description:
+ This function reads a single analogue output.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ comedi_insn *insn Pointer to current comedi instruction
+ lsampl_t *data Pointer to analogue output data
+
+ Returns:int Nmuber of instructions executed
+
+==============================================================================
+*/
+static int icp_multi_insn_read_ao(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int n, chan;
+
+ // Get channel number
+ chan = CR_CHAN(insn->chanspec);
+
+ // Read analogue outputs
+ for (n = 0; n < insn->n; n++)
+ data[n] = devpriv->ao_data[chan];
+
+ return n;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_insn_bits_di
+
+ Description:
+ This function reads the digital inputs.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ comedi_insn *insn Pointer to current comedi instruction
+ lsampl_t *data Pointer to analogue output data
+
+ Returns:int Nmuber of instructions executed
+
+==============================================================================
+*/
+static int icp_multi_insn_bits_di(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ data[1] = readw(devpriv->io_addr + ICP_MULTI_DI);
+
+ return 2;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_insn_bits_do
+
+ Description:
+ This function writes the appropriate digital outputs.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ comedi_insn *insn Pointer to current comedi instruction
+ lsampl_t *data Pointer to analogue output data
+
+ Returns:int Nmuber of instructions executed
+
+==============================================================================
+*/
+static int icp_multi_insn_bits_do(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: BGN: icp_multi_insn_bits_do(...)\n");
+#endif
+
+ if (data[0]) {
+ s->state &= ~data[0];
+ s->state |= (data[0] & data[1]);
+
+ printk("Digital outputs = %4x \n", s->state);
+
+ writew(s->state, devpriv->io_addr + ICP_MULTI_DO);
+ }
+
+ data[1] = readw(devpriv->io_addr + ICP_MULTI_DI);
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: icp_multi_insn_bits_do(...)\n");
+#endif
+ return 2;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_insn_read_ctr
+
+ Description:
+ This function reads the specified counter.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ comedi_insn *insn Pointer to current comedi instruction
+ lsampl_t *data Pointer to counter data
+
+ Returns:int Nmuber of instructions executed
+
+==============================================================================
+*/
+static int icp_multi_insn_read_ctr(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ return 0;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_insn_write_ctr
+
+ Description:
+ This function write to the specified counter.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ comedi_insn *insn Pointer to current comedi instruction
+ lsampl_t *data Pointer to counter data
+
+ Returns:int Nmuber of instructions executed
+
+==============================================================================
+*/
+static int icp_multi_insn_write_ctr(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ return 0;
+}
+
+/*
+==============================================================================
+
+ Name: interrupt_service_icp_multi
+
+ Description:
+ This function is the interrupt service routine for all
+ interrupts generated by the icp multi board.
+
+ Parameters:
+ int irq
+ void *d Pointer to current device
+
+==============================================================================
+*/
+static irqreturn_t interrupt_service_icp_multi(int irq, void *d PT_REGS_ARG)
+{
+ comedi_device *dev = d;
+ int int_no;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: BGN: interrupt_service_icp_multi(%d,...)\n",
+ irq);
+#endif
+
+ // Is this interrupt from our board?
+ int_no = readw(devpriv->io_addr + ICP_MULTI_INT_STAT) & Status_IRQ;
+ if (!int_no)
+ // No, exit
+ return IRQ_NONE;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: interrupt_service_icp_multi() ST: %4x\n",
+ readw(devpriv->io_addr + ICP_MULTI_INT_STAT));
+#endif
+
+ // Determine which interrupt is active & handle it
+ switch (int_no) {
+ case ADC_READY:
+ break;
+ case DAC_READY:
+ break;
+ case DOUT_ERROR:
+ break;
+ case DIN_STATUS:
+ break;
+ case CIE0:
+ break;
+ case CIE1:
+ break;
+ case CIE2:
+ break;
+ case CIE3:
+ break;
+ default:
+ break;
+
+ }
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: interrupt_service_icp_multi(...)\n");
+#endif
+ return IRQ_HANDLED;
+}
+
+#if 0
+/*
+==============================================================================
+
+ Name: check_channel_list
+
+ Description:
+ This function checks if the channel list, provided by user
+ is built correctly
+
+ Parameters:
+ comedi_device *dev Pointer to current sevice structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ unsigned int *chanlist Pointer to packed channel list
+ unsigned int n_chan Number of channels to scan
+
+ Returns:int 0 = failure
+ 1 = success
+
+==============================================================================
+*/
+static int check_channel_list(comedi_device * dev, comedi_subdevice * s,
+ unsigned int *chanlist, unsigned int n_chan)
+{
+ unsigned int i;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: check_channel_list(...,%d)\n", n_chan);
+#endif
+ // Check that we at least have one channel to check
+ if (n_chan < 1) {
+ comedi_error(dev, "range/channel list is empty!");
+ return 0;
+ }
+ // Check all channels
+ for (i = 0; i < n_chan; i++) {
+ // Check that channel number is < maximum
+ if (CR_AREF(chanlist[i]) == AREF_DIFF) {
+ if (CR_CHAN(chanlist[i]) > this_board->n_aichand) {
+ comedi_error(dev,
+ "Incorrect differential ai channel number");
+ return 0;
+ }
+ } else {
+ if (CR_CHAN(chanlist[i]) > this_board->n_aichan) {
+ comedi_error(dev,
+ "Incorrect ai channel number");
+ return 0;
+ }
+ }
+ }
+ return 1;
+}
+#endif
+
+/*
+==============================================================================
+
+ Name: setup_channel_list
+
+ Description:
+ This function sets the appropriate channel selection,
+ differential input mode and range bits in the ADC Command/
+ Status register.
+
+ Parameters:
+ comedi_device *dev Pointer to current sevice structure
+ comedi_subdevice *s Pointer to current subdevice structure
+ unsigned int *chanlist Pointer to packed channel list
+ unsigned int n_chan Number of channels to scan
+
+ Returns:Void
+
+==============================================================================
+*/
+static void setup_channel_list(comedi_device * dev, comedi_subdevice * s,
+ unsigned int *chanlist, unsigned int n_chan)
+{
+ unsigned int i, range, chanprog;
+ unsigned int diff;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: setup_channel_list(...,%d)\n", n_chan);
+#endif
+ devpriv->act_chanlist_len = n_chan;
+ devpriv->act_chanlist_pos = 0;
+
+ for (i = 0; i < n_chan; i++) {
+ // Get channel
+ chanprog = CR_CHAN(chanlist[i]);
+
+ // Determine if it is a differential channel (Bit 15 = 1)
+ if (CR_AREF(chanlist[i]) == AREF_DIFF) {
+ diff = 1;
+ chanprog &= 0x0007;
+ } else {
+ diff = 0;
+ chanprog &= 0x000f;
+ }
+
+ // Clear channel, range and input mode bits in A/D command/status register
+ devpriv->AdcCmdStatus &= 0xf00f;
+
+ // Set channel number and differential mode status bit
+ if (diff) {
+ // Set channel number, bits 9-11 & mode, bit 6
+ devpriv->AdcCmdStatus |= (chanprog << 9);
+ devpriv->AdcCmdStatus |= ADC_DI;
+ } else
+ // Set channel number, bits 8-11
+ devpriv->AdcCmdStatus |= (chanprog << 8);
+
+ // Get range for current channel
+ range = this_board->rangecode[CR_RANGE(chanlist[i])];
+ // Set range. bits 4-5
+ devpriv->AdcCmdStatus |= range;
+
+ /* Output channel, range, mode to ICP Multi */
+ writew(devpriv->AdcCmdStatus,
+ devpriv->io_addr + ICP_MULTI_ADC_CSR);
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("GS: %2d. [%4x]=%4x %4x\n", i, chanprog, range,
+ devpriv->act_chanlist[i]);
+#endif
+ }
+
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_reset
+
+ Description:
+ This function resets the icp multi device to a 'safe' state
+
+ Parameters:
+ comedi_device *dev Pointer to current sevice structure
+
+ Returns:int 0 = success
+
+==============================================================================
+*/
+static int icp_multi_reset(comedi_device * dev)
+{
+ unsigned int i;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp_multi EDBG: BGN: icp_multi_reset(...)\n");
+#endif
+ // Clear INT enables and requests
+ writew(0, devpriv->io_addr + ICP_MULTI_INT_EN);
+ writew(0x00ff, devpriv->io_addr + ICP_MULTI_INT_STAT);
+
+ if (this_board->n_aochan)
+ // Set DACs to 0..5V range and 0V output
+ for (i = 0; i < this_board->n_aochan; i++) {
+ devpriv->DacCmdStatus &= 0xfcce;
+
+ // Set channel number
+ devpriv->DacCmdStatus |= (i << 8);
+
+ // Output 0V
+ writew(0, devpriv->io_addr + ICP_MULTI_AO);
+
+ // Set start conversion bit
+ devpriv->DacCmdStatus |= DAC_ST;
+
+ // Output to command / status register
+ writew(devpriv->DacCmdStatus,
+ devpriv->io_addr + ICP_MULTI_DAC_CSR);
+
+ // Delay to allow DAC time to recover
+ comedi_udelay(1);
+ }
+ // Digital outputs to 0
+ writew(0, devpriv->io_addr + ICP_MULTI_DO);
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: icp_multi_reset(...)\n");
+#endif
+ return 0;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_attach
+
+ Description:
+ This function sets up all the appropriate data for the current
+ device.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+ comedi_devconfig *it Pointer to current device configuration
+
+ Returns:int 0 = success
+
+==============================================================================
+*/
+static int icp_multi_attach(comedi_device * dev, comedi_devconfig * it)
+{
+ comedi_subdevice *s;
+ int ret, subdev, n_subdevices;
+ unsigned int irq;
+ struct pcilst_struct *card = NULL;
+ resource_size_t io_addr[5], iobase;
+ unsigned char pci_bus, pci_slot, pci_func;
+
+ printk("icp_multi EDBG: BGN: icp_multi_attach(...)\n");
+
+ // Alocate private data storage space
+ if ((ret = alloc_private(dev, sizeof(icp_multi_private))) < 0)
+ return ret;
+
+ // Initialise list of PCI cards in system, if not already done so
+ if (pci_list_builded++ == 0) {
+ pci_card_list_init(PCI_VENDOR_ID_ICP,
+#ifdef ICP_MULTI_EXTDEBUG
+ 1
+#else
+ 0
+#endif
+ );
+ }
+
+ printk("Anne's comedi%d: icp_multi: board=%s", dev->minor,
+ this_board->name);
+
+ if ((card = select_and_alloc_pci_card(PCI_VENDOR_ID_ICP,
+ this_board->device_id, it->options[0],
+ it->options[1])) == NULL)
+ return -EIO;
+
+ devpriv->card = card;
+
+ if ((pci_card_data(card, &pci_bus, &pci_slot, &pci_func, &io_addr[0],
+ &irq)) < 0) {
+ printk(" - Can't get configuration data!\n");
+ return -EIO;
+ }
+
+ iobase = io_addr[2];
+ devpriv->phys_iobase = iobase;
+
+ printk(", b:s:f=%d:%d:%d, io=0x%8llx \n", pci_bus, pci_slot, pci_func,
+ (unsigned long long)iobase);
+
+ devpriv->io_addr = ioremap(iobase, ICP_MULTI_SIZE);
+
+ if (devpriv->io_addr == NULL) {
+ printk("ioremap failed.\n");
+ return -ENOMEM;
+ }
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("0x%08llx mapped to %p, ", (unsigned long long)iobase,
+ devpriv->io_addr);
+#endif
+
+ dev->board_name = this_board->name;
+
+ n_subdevices = 0;
+ if (this_board->n_aichan)
+ n_subdevices++;
+ if (this_board->n_aochan)
+ n_subdevices++;
+ if (this_board->n_dichan)
+ n_subdevices++;
+ if (this_board->n_dochan)
+ n_subdevices++;
+ if (this_board->n_ctrs)
+ n_subdevices++;
+
+ if ((ret = alloc_subdevices(dev, n_subdevices)) < 0) {
+ return ret;
+ }
+
+ icp_multi_reset(dev);
+
+ if (this_board->have_irq) {
+ if (irq) {
+ if (comedi_request_irq(irq, interrupt_service_icp_multi,
+ IRQF_SHARED, "Inova Icp Multi", dev)) {
+ printk(", unable to allocate IRQ %u, DISABLING IT", irq);
+ irq = 0; /* Can't use IRQ */
+ } else
+ printk(", irq=%u", irq);
+ } else
+ printk(", IRQ disabled");
+ } else
+ irq = 0;
+
+ dev->irq = irq;
+
+ printk(".\n");
+
+ subdev = 0;
+
+ if (this_board->n_aichan) {
+ s = dev->subdevices + subdev;
+ dev->read_subdev = s;
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags = SDF_READABLE | SDF_COMMON | SDF_GROUND;
+ if (this_board->n_aichand)
+ s->subdev_flags |= SDF_DIFF;
+ s->n_chan = this_board->n_aichan;
+ s->maxdata = this_board->ai_maxdata;
+ s->len_chanlist = this_board->n_aichan;
+ s->range_table = this_board->rangelist_ai;
+ s->insn_read = icp_multi_insn_read_ai;
+ subdev++;
+ }
+
+ if (this_board->n_aochan) {
+ s = dev->subdevices + subdev;
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
+ s->n_chan = this_board->n_aochan;
+ s->maxdata = this_board->ao_maxdata;
+ s->len_chanlist = this_board->n_aochan;
+ s->range_table = this_board->rangelist_ao;
+ s->insn_write = icp_multi_insn_write_ao;
+ s->insn_read = icp_multi_insn_read_ao;
+ subdev++;
+ }
+
+ if (this_board->n_dichan) {
+ s = dev->subdevices + subdev;
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = this_board->n_dichan;
+ s->maxdata = 1;
+ s->len_chanlist = this_board->n_dichan;
+ s->range_table = &range_digital;
+ s->io_bits = 0;
+ s->insn_bits = icp_multi_insn_bits_di;
+ subdev++;
+ }
+
+ if (this_board->n_dochan) {
+ s = dev->subdevices + subdev;
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
+ s->n_chan = this_board->n_dochan;
+ s->maxdata = 1;
+ s->len_chanlist = this_board->n_dochan;
+ s->range_table = &range_digital;
+ s->io_bits = (1 << this_board->n_dochan) - 1;
+ s->state = 0;
+ s->insn_bits = icp_multi_insn_bits_do;
+ subdev++;
+ }
+
+ if (this_board->n_ctrs) {
+ s = dev->subdevices + subdev;
+ s->type = COMEDI_SUBD_COUNTER;
+ s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
+ s->n_chan = this_board->n_ctrs;
+ s->maxdata = 0xffff;
+ s->len_chanlist = this_board->n_ctrs;
+ s->state = 0;
+ s->insn_read = icp_multi_insn_read_ctr;
+ s->insn_write = icp_multi_insn_write_ctr;
+ subdev++;
+ }
+
+ devpriv->valid = 1;
+
+#ifdef ICP_MULTI_EXTDEBUG
+ printk("icp multi EDBG: END: icp_multi_attach(...)\n");
+#endif
+
+ return 0;
+}
+
+/*
+==============================================================================
+
+ Name: icp_multi_detach
+
+ Description:
+ This function releases all the resources used by the current
+ device.
+
+ Parameters:
+ comedi_device *dev Pointer to current device structure
+
+ Returns:int 0 = success
+
+==============================================================================
+*/
+static int icp_multi_detach(comedi_device * dev)
+{
+
+ if (dev->private)
+ if (devpriv->valid)
+ icp_multi_reset(dev);
+
+ if (dev->irq)
+ comedi_free_irq(dev->irq, dev);
+
+ if (dev->private && devpriv->io_addr)
+ iounmap(devpriv->io_addr);
+
+ if (dev->private && devpriv->card)
+ pci_card_free(devpriv->card);
+
+ if (--pci_list_builded == 0) {
+ pci_card_list_cleanup(PCI_VENDOR_ID_ICP);
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ comedi/drivers/icp_multi.h
+
+ Stuff for ICP Multi
+
+ Author: Anne Smorthit <anne.smorthit@sfwte.ch>
+
+*/
+
+#ifndef _ICP_MULTI_H_
+#define _ICP_MULTI_H_
+
+#include "../comedidev.h"
+#include "comedi_pci.h"
+
+/****************************************************************************/
+
+struct pcilst_struct {
+ struct pcilst_struct *next;
+ int used;
+ struct pci_dev *pcidev;
+ unsigned short vendor;
+ unsigned short device;
+ unsigned char pci_bus;
+ unsigned char pci_slot;
+ unsigned char pci_func;
+ resource_size_t io_addr[5];
+ unsigned int irq;
+};
+
+struct pcilst_struct *inova_devices; // ptr to root list of all Inova devices
+
+/****************************************************************************/
+
+static void pci_card_list_init(unsigned short pci_vendor, char display);
+static void pci_card_list_cleanup(unsigned short pci_vendor);
+static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
+ vendor_id, unsigned short device_id);
+static int find_free_pci_card_by_position(unsigned short vendor_id,
+ unsigned short device_id, unsigned short pci_bus,
+ unsigned short pci_slot, struct pcilst_struct **card);
+static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
+ unsigned short device_id, unsigned short pci_bus,
+ unsigned short pci_slot);
+
+static int pci_card_alloc(struct pcilst_struct *amcc);
+static int pci_card_free(struct pcilst_struct *amcc);
+static void pci_card_list_display(void);
+static int pci_card_data(struct pcilst_struct *amcc,
+ unsigned char *pci_bus, unsigned char *pci_slot,
+ unsigned char *pci_func, resource_size_t * io_addr, unsigned int *irq);
+
+/****************************************************************************/
+
+/* build list of Inova cards in this system */
+static void pci_card_list_init(unsigned short pci_vendor, char display)
+{
+ struct pci_dev *pcidev;
+ struct pcilst_struct *inova, *last;
+ int i;
+
+ inova_devices = NULL;
+ last = NULL;
+
+ for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
+ pcidev != NULL;
+ pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
+ if (pcidev->vendor == pci_vendor) {
+ inova = kmalloc(sizeof(*inova), GFP_KERNEL);
+ if (!inova) {
+ printk("icp_multi: pci_card_list_init: allocation failed\n");
+ pci_dev_put(pcidev);
+ break;
+ }
+ memset(inova, 0, sizeof(*inova));
+
+ inova->pcidev = pci_dev_get(pcidev);
+ if (last) {
+ last->next = inova;
+ } else {
+ inova_devices = inova;
+ }
+ last = inova;
+
+ inova->vendor = pcidev->vendor;
+ inova->device = pcidev->device;
+ inova->pci_bus = pcidev->bus->number;
+ inova->pci_slot = PCI_SLOT(pcidev->devfn);
+ inova->pci_func = PCI_FUNC(pcidev->devfn);
+ /* Note: resources may be invalid if PCI device
+ * not enabled, but they are corrected in
+ * pci_card_alloc. */
+ for (i = 0; i < 5; i++)
+ inova->io_addr[i] =
+ pci_resource_start(pcidev, i);
+ inova->irq = pcidev->irq;
+ }
+ }
+
+ if (display)
+ pci_card_list_display();
+}
+
+/****************************************************************************/
+/* free up list of amcc cards in this system */
+static void pci_card_list_cleanup(unsigned short pci_vendor)
+{
+ struct pcilst_struct *inova, *next;
+
+ for (inova = inova_devices; inova; inova = next) {
+ next = inova->next;
+ pci_dev_put(inova->pcidev);
+ kfree(inova);
+ }
+
+ inova_devices = NULL;
+}
+
+/****************************************************************************/
+/* find first unused card with this device_id */
+static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
+ vendor_id, unsigned short device_id)
+{
+ struct pcilst_struct *inova, *next;
+
+ for (inova = inova_devices; inova; inova = next) {
+ next = inova->next;
+ if ((!inova->used) && (inova->device == device_id)
+ && (inova->vendor == vendor_id))
+ return inova;
+
+ }
+
+ return NULL;
+}
+
+/****************************************************************************/
+/* find card on requested position */
+static int find_free_pci_card_by_position(unsigned short vendor_id,
+ unsigned short device_id, unsigned short pci_bus,
+ unsigned short pci_slot, struct pcilst_struct **card)
+{
+ struct pcilst_struct *inova, *next;
+
+ *card = NULL;
+ for (inova = inova_devices; inova; inova = next) {
+ next = inova->next;
+ if ((inova->vendor == vendor_id) && (inova->device == device_id)
+ && (inova->pci_bus == pci_bus)
+ && (inova->pci_slot == pci_slot)) {
+ if (!(inova->used)) {
+ *card = inova;
+ return 0; // ok, card is found
+ } else {
+ return 2; // card exist but is used
+ }
+ }
+ }
+
+ return 1; // no card found
+}
+
+/****************************************************************************/
+/* mark card as used */
+static int pci_card_alloc(struct pcilst_struct *inova)
+{
+ int i;
+
+ if (!inova) {
+ rt_printk(" - BUG!! inova is NULL!\n");
+ return -1;
+ }
+
+ if (inova->used)
+ return 1;
+ if (comedi_pci_enable(inova->pcidev, "icp_multi")) {
+ rt_printk(" - Can't enable PCI device and request regions!\n");
+ return -1;
+ }
+ /* Resources will be accurate now. */
+ for (i = 0; i < 5; i++)
+ inova->io_addr[i] = pci_resource_start(inova->pcidev, i);
+ inova->irq = inova->pcidev->irq;
+ inova->used = 1;
+ return 0;
+}
+
+/****************************************************************************/
+/* mark card as free */
+static int pci_card_free(struct pcilst_struct *inova)
+{
+ if (!inova)
+ return -1;
+
+ if (!inova->used)
+ return 1;
+ inova->used = 0;
+ comedi_pci_disable(inova->pcidev);
+ return 0;
+}
+
+/****************************************************************************/
+/* display list of found cards */
+static void pci_card_list_display(void)
+{
+ struct pcilst_struct *inova, *next;
+
+ printk("Anne's List of pci cards\n");
+ printk("bus:slot:func vendor device io_inova io_daq irq used\n");
+
+ for (inova = inova_devices; inova; inova = next) {
+ next = inova->next;
+ printk("%2d %2d %2d 0x%4x 0x%4x 0x%8llx 0x%8llx %2u %2d\n", inova->pci_bus, inova->pci_slot, inova->pci_func, inova->vendor, inova->device, (unsigned long long)inova->io_addr[0], (unsigned long long)inova->io_addr[2], inova->irq, inova->used);
+
+ }
+}
+
+/****************************************************************************/
+/* return all card information for driver */
+static int pci_card_data(struct pcilst_struct *inova,
+ unsigned char *pci_bus, unsigned char *pci_slot,
+ unsigned char *pci_func, resource_size_t * io_addr, unsigned int *irq)
+{
+ int i;
+
+ if (!inova)
+ return -1;
+ *pci_bus = inova->pci_bus;
+ *pci_slot = inova->pci_slot;
+ *pci_func = inova->pci_func;
+ for (i = 0; i < 5; i++)
+ io_addr[i] = inova->io_addr[i];
+ *irq = inova->irq;
+ return 0;
+}
+
+/****************************************************************************/
+/* select and alloc card */
+static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
+ unsigned short device_id, unsigned short pci_bus,
+ unsigned short pci_slot)
+{
+ struct pcilst_struct *card;
+ int err;
+
+ if ((pci_bus < 1) & (pci_slot < 1)) { // use autodetection
+ if ((card = find_free_pci_card_by_device(vendor_id,
+ device_id)) == NULL) {
+ rt_printk(" - Unused card not found in system!\n");
+ return NULL;
+ }
+ } else {
+ switch (find_free_pci_card_by_position(vendor_id, device_id,
+ pci_bus, pci_slot, &card)) {
+ case 1:
+ rt_printk
+ (" - Card not found on requested position b:s %d:%d!\n",
+ pci_bus, pci_slot);
+ return NULL;
+ case 2:
+ rt_printk
+ (" - Card on requested position is used b:s %d:%d!\n",
+ pci_bus, pci_slot);
+ return NULL;
+ }
+ }
+
+ if ((err = pci_card_alloc(card)) != 0) {
+ if (err > 0)
+ rt_printk(" - Can't allocate card!\n");
+ /* else: error already printed. */
+ return NULL;
+ }
+
+ return card;
+}
+
+#endif
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff