--- /dev/null
+/*
+ comedi/drivers/s626.c
+ Sensoray s626 Comedi driver
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+
+ Based on Sensoray Model 626 Linux driver Version 0.2
+ Copyright (C) 2002-2004 Sensoray Co., Inc.
+
+ 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: s626
+Description: Sensoray 626 driver
+Devices: [Sensoray] 626 (s626)
+Authors: Gianluca Palli <gpalli@deis.unibo.it>,
+Updated: Fri, 15 Feb 2008 10:28:42 +0000
+Status: experimental
+
+Configuration options:
+ [0] - PCI bus of device (optional)
+ [1] - PCI slot of device (optional)
+ If bus/slot is not specified, the first supported
+ PCI device found will be used.
+
+INSN_CONFIG instructions:
+ analog input:
+ none
+
+ analog output:
+ none
+
+ digital channel:
+ s626 has 3 dio subdevices (2,3 and 4) each with 16 i/o channels
+ supported configuration options:
+ INSN_CONFIG_DIO_QUERY
+ COMEDI_INPUT
+ COMEDI_OUTPUT
+
+ encoder:
+ Every channel must be configured before reading.
+
+ Example code
+
+ insn.insn=INSN_CONFIG; //configuration instruction
+ insn.n=1; //number of operation (must be 1)
+ insn.data=&initialvalue; //initial value loaded into encoder
+ //during configuration
+ insn.subdev=5; //encoder subdevice
+ insn.chanspec=CR_PACK(encoder_channel,0,AREF_OTHER); //encoder_channel
+ //to configure
+
+ comedi_do_insn(cf,&insn); //executing configuration
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include "../comedidev.h"
+
+#include "comedi_pci.h"
+
+#include "comedi_fc.h"
+#include "s626.h"
+
+MODULE_AUTHOR("Gianluca Palli <gpalli@deis.unibo.it>");
+MODULE_DESCRIPTION("Sensoray 626 Comedi driver module");
+MODULE_LICENSE("GPL");
+
+typedef struct s626_board_struct {
+ const char *name;
+ int ai_chans;
+ int ai_bits;
+ int ao_chans;
+ int ao_bits;
+ int dio_chans;
+ int dio_banks;
+ int enc_chans;
+} s626_board;
+
+static const s626_board s626_boards[] = {
+ {
+ name: "s626",
+ ai_chans:S626_ADC_CHANNELS,
+ ai_bits: 14,
+ ao_chans:S626_DAC_CHANNELS,
+ ao_bits: 13,
+ dio_chans:S626_DIO_CHANNELS,
+ dio_banks:S626_DIO_BANKS,
+ enc_chans:S626_ENCODER_CHANNELS,
+ }
+};
+
+#define thisboard ((const s626_board *)dev->board_ptr)
+#define PCI_VENDOR_ID_S626 0x1131
+#define PCI_DEVICE_ID_S626 0x7146
+
+static DEFINE_PCI_DEVICE_TABLE(s626_pci_table) = {
+ {PCI_VENDOR_ID_S626, PCI_DEVICE_ID_S626, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ 0},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, s626_pci_table);
+
+static int s626_attach(comedi_device * dev, comedi_devconfig * it);
+static int s626_detach(comedi_device * dev);
+
+static comedi_driver driver_s626 = {
+ driver_name:"s626",
+ module:THIS_MODULE,
+ attach:s626_attach,
+ detach:s626_detach,
+};
+
+typedef struct {
+ struct pci_dev *pdev;
+ void *base_addr;
+ int got_regions;
+ short allocatedBuf;
+ uint8_t ai_cmd_running; // ai_cmd is running
+ uint8_t ai_continous; // continous aquisition
+ int ai_sample_count; // number of samples to aquire
+ unsigned int ai_sample_timer; // time between samples in
+ // units of the timer
+ int ai_convert_count; // conversion counter
+ unsigned int ai_convert_timer; // time between conversion in
+ // units of the timer
+ uint16_t CounterIntEnabs; //Counter interrupt enable
+ //mask for MISC2 register.
+ uint8_t AdcItems; //Number of items in ADC poll
+ //list.
+ DMABUF RPSBuf; //DMA buffer used to hold ADC
+ //(RPS1) program.
+ DMABUF ANABuf; //DMA buffer used to receive
+ //ADC data and hold DAC data.
+ uint32_t *pDacWBuf; //Pointer to logical adrs of
+ //DMA buffer used to hold DAC
+ //data.
+ uint16_t Dacpol; //Image of DAC polarity
+ //register.
+ uint8_t TrimSetpoint[12]; //Images of TrimDAC setpoints.
+ //registers.
+ uint16_t ChargeEnabled; //Image of MISC2 Battery
+ //Charge Enabled (0 or
+ //WRMISC2_CHARGE_ENABLE).
+ uint16_t WDInterval; //Image of MISC2 watchdog
+ //interval control bits.
+ uint32_t I2CAdrs; //I2C device address for
+ //onboard EEPROM (board rev
+ //dependent).
+ // short I2Cards;
+ lsampl_t ao_readback[S626_DAC_CHANNELS];
+} s626_private;
+
+typedef struct {
+ uint16_t RDDIn;
+ uint16_t WRDOut;
+ uint16_t RDEdgSel;
+ uint16_t WREdgSel;
+ uint16_t RDCapSel;
+ uint16_t WRCapSel;
+ uint16_t RDCapFlg;
+ uint16_t RDIntSel;
+ uint16_t WRIntSel;
+} dio_private;
+
+static dio_private dio_private_A = {
+ RDDIn:LP_RDDINA,
+ WRDOut:LP_WRDOUTA,
+ RDEdgSel:LP_RDEDGSELA,
+ WREdgSel:LP_WREDGSELA,
+ RDCapSel:LP_RDCAPSELA,
+ WRCapSel:LP_WRCAPSELA,
+ RDCapFlg:LP_RDCAPFLGA,
+ RDIntSel:LP_RDINTSELA,
+ WRIntSel:LP_WRINTSELA,
+};
+
+static dio_private dio_private_B = {
+ RDDIn:LP_RDDINB,
+ WRDOut:LP_WRDOUTB,
+ RDEdgSel:LP_RDEDGSELB,
+ WREdgSel:LP_WREDGSELB,
+ RDCapSel:LP_RDCAPSELB,
+ WRCapSel:LP_WRCAPSELB,
+ RDCapFlg:LP_RDCAPFLGB,
+ RDIntSel:LP_RDINTSELB,
+ WRIntSel:LP_WRINTSELB,
+};
+
+static dio_private dio_private_C = {
+ RDDIn:LP_RDDINC,
+ WRDOut:LP_WRDOUTC,
+ RDEdgSel:LP_RDEDGSELC,
+ WREdgSel:LP_WREDGSELC,
+ RDCapSel:LP_RDCAPSELC,
+ WRCapSel:LP_WRCAPSELC,
+ RDCapFlg:LP_RDCAPFLGC,
+ RDIntSel:LP_RDINTSELC,
+ WRIntSel:LP_WRINTSELC,
+};
+
+/* to group dio devices (48 bits mask and data are not allowed ???)
+static dio_private *dio_private_word[]={
+ &dio_private_A,
+ &dio_private_B,
+ &dio_private_C,
+};
+*/
+
+#define devpriv ((s626_private *)dev->private)
+#define diopriv ((dio_private *)s->private)
+
+COMEDI_PCI_INITCLEANUP_NOMODULE(driver_s626, s626_pci_table);
+
+//ioctl routines
+static int s626_ai_insn_config(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+/* static int s626_ai_rinsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data); */
+static int s626_ai_insn_read(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_ai_cmd(comedi_device * dev, comedi_subdevice * s);
+static int s626_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
+ comedi_cmd * cmd);
+static int s626_ai_cancel(comedi_device * dev, comedi_subdevice * s);
+static int s626_ao_winsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_ao_rinsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_dio_insn_config(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_dio_set_irq(comedi_device * dev, unsigned int chan);
+static int s626_dio_reset_irq(comedi_device * dev, unsigned int gruop,
+ unsigned int mask);
+static int s626_dio_clear_irq(comedi_device * dev);
+static int s626_enc_insn_config(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_enc_insn_read(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_enc_insn_write(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data);
+static int s626_ns_to_timer(int *nanosec, int round_mode);
+static int s626_ai_load_polllist(uint8_t * ppl, comedi_cmd * cmd);
+static int s626_ai_inttrig(comedi_device * dev, comedi_subdevice * s,
+ unsigned int trignum);
+static irqreturn_t s626_irq_handler(int irq, void *d PT_REGS_ARG);
+static lsampl_t s626_ai_reg_to_uint(int data);
+/* static lsampl_t s626_uint_to_reg(comedi_subdevice *s, int data); */
+
+//end ioctl routines
+
+//internal routines
+static void s626_dio_init(comedi_device * dev);
+static void ResetADC(comedi_device * dev, uint8_t * ppl);
+static void LoadTrimDACs(comedi_device * dev);
+static void WriteTrimDAC(comedi_device * dev, uint8_t LogicalChan,
+ uint8_t DacData);
+static uint8_t I2Cread(comedi_device * dev, uint8_t addr);
+static uint32_t I2Chandshake(comedi_device * dev, uint32_t val);
+static void SetDAC(comedi_device * dev, uint16_t chan, short dacdata);
+static void SendDAC(comedi_device * dev, uint32_t val);
+static void WriteMISC2(comedi_device * dev, uint16_t NewImage);
+static void DEBItransfer(comedi_device * dev);
+static uint16_t DEBIread(comedi_device * dev, uint16_t addr);
+static void DEBIwrite(comedi_device * dev, uint16_t addr, uint16_t wdata);
+static void DEBIreplace(comedi_device * dev, uint16_t addr, uint16_t mask,
+ uint16_t wdata);
+static void CloseDMAB(comedi_device * dev, DMABUF * pdma, size_t bsize);
+
+// COUNTER OBJECT ------------------------------------------------
+typedef struct enc_private_struct {
+ // Pointers to functions that differ for A and B counters:
+ uint16_t(*GetEnable) (comedi_device * dev, struct enc_private_struct *); //Return clock enable.
+ uint16_t(*GetIntSrc) (comedi_device * dev, struct enc_private_struct *); //Return interrupt source.
+ uint16_t(*GetLoadTrig) (comedi_device * dev, struct enc_private_struct *); //Return preload trigger source.
+ uint16_t(*GetMode) (comedi_device * dev, struct enc_private_struct *); //Return standardized operating mode.
+ void (*PulseIndex) (comedi_device * dev, struct enc_private_struct *); //Generate soft index strobe.
+ void (*SetEnable) (comedi_device * dev, struct enc_private_struct *, uint16_t enab); //Program clock enable.
+ void (*SetIntSrc) (comedi_device * dev, struct enc_private_struct *, uint16_t IntSource); //Program interrupt source.
+ void (*SetLoadTrig) (comedi_device * dev, struct enc_private_struct *, uint16_t Trig); //Program preload trigger source.
+ void (*SetMode) (comedi_device * dev, struct enc_private_struct *, uint16_t Setup, uint16_t DisableIntSrc); //Program standardized operating mode.
+ void (*ResetCapFlags) (comedi_device * dev, struct enc_private_struct *); //Reset event capture flags.
+
+ uint16_t MyCRA; // Address of CRA register.
+ uint16_t MyCRB; // Address of CRB register.
+ uint16_t MyLatchLsw; // Address of Latch least-significant-word
+ // register.
+ uint16_t MyEventBits[4]; // Bit translations for IntSrc -->RDMISC2.
+} enc_private; //counter object
+
+#define encpriv ((enc_private *)(dev->subdevices+5)->private)
+
+//counters routines
+static void s626_timer_load(comedi_device * dev, enc_private * k, int tick);
+static uint32_t ReadLatch(comedi_device * dev, enc_private * k);
+static void ResetCapFlags_A(comedi_device * dev, enc_private * k);
+static void ResetCapFlags_B(comedi_device * dev, enc_private * k);
+static uint16_t GetMode_A(comedi_device * dev, enc_private * k);
+static uint16_t GetMode_B(comedi_device * dev, enc_private * k);
+static void SetMode_A(comedi_device * dev, enc_private * k, uint16_t Setup,
+ uint16_t DisableIntSrc);
+static void SetMode_B(comedi_device * dev, enc_private * k, uint16_t Setup,
+ uint16_t DisableIntSrc);
+static void SetEnable_A(comedi_device * dev, enc_private * k, uint16_t enab);
+static void SetEnable_B(comedi_device * dev, enc_private * k, uint16_t enab);
+static uint16_t GetEnable_A(comedi_device * dev, enc_private * k);
+static uint16_t GetEnable_B(comedi_device * dev, enc_private * k);
+static void SetLatchSource(comedi_device * dev, enc_private * k,
+ uint16_t value);
+/* static uint16_t GetLatchSource(comedi_device *dev, enc_private *k ); */
+static void SetLoadTrig_A(comedi_device * dev, enc_private * k, uint16_t Trig);
+static void SetLoadTrig_B(comedi_device * dev, enc_private * k, uint16_t Trig);
+static uint16_t GetLoadTrig_A(comedi_device * dev, enc_private * k);
+static uint16_t GetLoadTrig_B(comedi_device * dev, enc_private * k);
+static void SetIntSrc_B(comedi_device * dev, enc_private * k,
+ uint16_t IntSource);
+static void SetIntSrc_A(comedi_device * dev, enc_private * k,
+ uint16_t IntSource);
+static uint16_t GetIntSrc_A(comedi_device * dev, enc_private * k);
+static uint16_t GetIntSrc_B(comedi_device * dev, enc_private * k);
+/* static void SetClkMult(comedi_device *dev, enc_private *k, uint16_t value ) ; */
+/* static uint16_t GetClkMult(comedi_device *dev, enc_private *k ) ; */
+/* static void SetIndexPol(comedi_device *dev, enc_private *k, uint16_t value ); */
+/* static uint16_t GetClkPol(comedi_device *dev, enc_private *k ) ; */
+/* static void SetIndexSrc( comedi_device *dev,enc_private *k, uint16_t value ); */
+/* static uint16_t GetClkSrc( comedi_device *dev,enc_private *k ); */
+/* static void SetIndexSrc( comedi_device *dev,enc_private *k, uint16_t value ); */
+/* static uint16_t GetIndexSrc( comedi_device *dev,enc_private *k ); */
+static void PulseIndex_A(comedi_device * dev, enc_private * k);
+static void PulseIndex_B(comedi_device * dev, enc_private * k);
+static void Preload(comedi_device * dev, enc_private * k, uint32_t value);
+static void CountersInit(comedi_device * dev);
+//end internal routines
+
+/////////////////////////////////////////////////////////////////////////
+// Counter objects constructor.
+
+// Counter overflow/index event flag masks for RDMISC2.
+#define INDXMASK(C) ( 1 << ( ( (C) > 2 ) ? ( (C) * 2 - 1 ) : ( (C) * 2 + 4 ) ) )
+#define OVERMASK(C) ( 1 << ( ( (C) > 2 ) ? ( (C) * 2 + 5 ) : ( (C) * 2 + 10 ) ) )
+#define EVBITS(C) { 0, OVERMASK(C), INDXMASK(C), OVERMASK(C) | INDXMASK(C) }
+
+// Translation table to map IntSrc into equivalent RDMISC2 event flag
+// bits.
+//static const uint16_t EventBits[][4] = { EVBITS(0), EVBITS(1), EVBITS(2), EVBITS(3), EVBITS(4), EVBITS(5) };
+
+/* enc_private; */
+static enc_private enc_private_data[] = {
+ {
+ GetEnable:GetEnable_A,
+ GetIntSrc:GetIntSrc_A,
+ GetLoadTrig:GetLoadTrig_A,
+ GetMode: GetMode_A,
+ PulseIndex:PulseIndex_A,
+ SetEnable:SetEnable_A,
+ SetIntSrc:SetIntSrc_A,
+ SetLoadTrig:SetLoadTrig_A,
+ SetMode: SetMode_A,
+ ResetCapFlags:ResetCapFlags_A,
+ MyCRA: LP_CR0A,
+ MyCRB: LP_CR0B,
+ MyLatchLsw:LP_CNTR0ALSW,
+ MyEventBits:EVBITS(0),
+ },
+ {
+ GetEnable:GetEnable_A,
+ GetIntSrc:GetIntSrc_A,
+ GetLoadTrig:GetLoadTrig_A,
+ GetMode: GetMode_A,
+ PulseIndex:PulseIndex_A,
+ SetEnable:SetEnable_A,
+ SetIntSrc:SetIntSrc_A,
+ SetLoadTrig:SetLoadTrig_A,
+ SetMode: SetMode_A,
+ ResetCapFlags:ResetCapFlags_A,
+ MyCRA: LP_CR1A,
+ MyCRB: LP_CR1B,
+ MyLatchLsw:LP_CNTR1ALSW,
+ MyEventBits:EVBITS(1),
+ },
+ {
+ GetEnable:GetEnable_A,
+ GetIntSrc:GetIntSrc_A,
+ GetLoadTrig:GetLoadTrig_A,
+ GetMode: GetMode_A,
+ PulseIndex:PulseIndex_A,
+ SetEnable:SetEnable_A,
+ SetIntSrc:SetIntSrc_A,
+ SetLoadTrig:SetLoadTrig_A,
+ SetMode: SetMode_A,
+ ResetCapFlags:ResetCapFlags_A,
+ MyCRA: LP_CR2A,
+ MyCRB: LP_CR2B,
+ MyLatchLsw:LP_CNTR2ALSW,
+ MyEventBits:EVBITS(2),
+ },
+ {
+ GetEnable:GetEnable_B,
+ GetIntSrc:GetIntSrc_B,
+ GetLoadTrig:GetLoadTrig_B,
+ GetMode: GetMode_B,
+ PulseIndex:PulseIndex_B,
+ SetEnable:SetEnable_B,
+ SetIntSrc:SetIntSrc_B,
+ SetLoadTrig:SetLoadTrig_B,
+ SetMode: SetMode_B,
+ ResetCapFlags:ResetCapFlags_B,
+ MyCRA: LP_CR0A,
+ MyCRB: LP_CR0B,
+ MyLatchLsw:LP_CNTR0BLSW,
+ MyEventBits:EVBITS(3),
+ },
+ {
+ GetEnable:GetEnable_B,
+ GetIntSrc:GetIntSrc_B,
+ GetLoadTrig:GetLoadTrig_B,
+ GetMode: GetMode_B,
+ PulseIndex:PulseIndex_B,
+ SetEnable:SetEnable_B,
+ SetIntSrc:SetIntSrc_B,
+ SetLoadTrig:SetLoadTrig_B,
+ SetMode: SetMode_B,
+ ResetCapFlags:ResetCapFlags_B,
+ MyCRA: LP_CR1A,
+ MyCRB: LP_CR1B,
+ MyLatchLsw:LP_CNTR1BLSW,
+ MyEventBits:EVBITS(4),
+ },
+ {
+ GetEnable:GetEnable_B,
+ GetIntSrc:GetIntSrc_B,
+ GetLoadTrig:GetLoadTrig_B,
+ GetMode: GetMode_B,
+ PulseIndex:PulseIndex_B,
+ SetEnable:SetEnable_B,
+ SetIntSrc:SetIntSrc_B,
+ SetLoadTrig:SetLoadTrig_B,
+ SetMode: SetMode_B,
+ ResetCapFlags:ResetCapFlags_B,
+ MyCRA: LP_CR2A,
+ MyCRB: LP_CR2B,
+ MyLatchLsw:LP_CNTR2BLSW,
+ MyEventBits:EVBITS(5),
+ },
+};
+
+// enab/disable a function or test status bit(s) that are accessed
+// through Main Control Registers 1 or 2.
+#define MC_ENABLE( REGADRS, CTRLWORD ) writel( ( (uint32_t)( CTRLWORD ) << 16 ) | (uint32_t)( CTRLWORD ),devpriv->base_addr+( REGADRS ) )
+
+#define MC_DISABLE( REGADRS, CTRLWORD ) writel( (uint32_t)( CTRLWORD ) << 16 , devpriv->base_addr+( REGADRS ) )
+
+#define MC_TEST( REGADRS, CTRLWORD ) ( ( readl(devpriv->base_addr+( REGADRS )) & CTRLWORD ) != 0 )
+
+/* #define WR7146(REGARDS,CTRLWORD)
+ writel(CTRLWORD,(uint32_t)(devpriv->base_addr+(REGARDS))) */
+#define WR7146(REGARDS,CTRLWORD) writel(CTRLWORD,devpriv->base_addr+(REGARDS))
+
+/* #define RR7146(REGARDS)
+ readl((uint32_t)(devpriv->base_addr+(REGARDS))) */
+#define RR7146(REGARDS) readl(devpriv->base_addr+(REGARDS))
+
+#define BUGFIX_STREG(REGADRS) ( REGADRS - 4 )
+
+// Write a time slot control record to TSL2.
+#define VECTPORT( VECTNUM ) (P_TSL2 + ( (VECTNUM) << 2 ))
+#define SETVECT( VECTNUM, VECTVAL ) WR7146(VECTPORT( VECTNUM ), (VECTVAL))
+
+// Code macros used for constructing I2C command bytes.
+#define I2C_B2(ATTR,VAL) ( ( (ATTR) << 6 ) | ( (VAL) << 24 ) )
+#define I2C_B1(ATTR,VAL) ( ( (ATTR) << 4 ) | ( (VAL) << 16 ) )
+#define I2C_B0(ATTR,VAL) ( ( (ATTR) << 2 ) | ( (VAL) << 8 ) )
+
+static const comedi_lrange s626_range_table = { 2, {
+ RANGE(-5, 5),
+ RANGE(-10, 10),
+ }
+};
+
+static int s626_attach(comedi_device * dev, comedi_devconfig * it)
+{
+/* uint8_t PollList; */
+/* uint16_t AdcData; */
+/* uint16_t StartVal; */
+/* uint16_t index; */
+/* unsigned int data[16]; */
+ int result;
+ int i;
+ int ret;
+ resource_size_t resourceStart;
+ dma_addr_t appdma;
+ comedi_subdevice *s;
+ struct pci_dev *pdev;
+
+ if (alloc_private(dev, sizeof(s626_private)) < 0)
+ return -ENOMEM;
+
+ for (pdev = pci_get_device(PCI_VENDOR_ID_S626, PCI_DEVICE_ID_S626,
+ NULL); pdev != NULL;
+ pdev = pci_get_device(PCI_VENDOR_ID_S626,
+ PCI_DEVICE_ID_S626, pdev)) {
+ if (it->options[0] || it->options[1]) {
+ if (pdev->bus->number == it->options[0] &&
+ PCI_SLOT(pdev->devfn) == it->options[1]) {
+ /* matches requested bus/slot */
+ break;
+ }
+ } else {
+ /* no bus/slot specified */
+ break;
+ }
+ }
+ devpriv->pdev = pdev;
+
+ if (pdev == NULL) {
+ printk("s626_attach: Board not present!!!\n");
+ return -ENODEV;
+ }
+
+ if ((result = comedi_pci_enable(pdev, "s626")) < 0) {
+ printk("s626_attach: comedi_pci_enable fails\n");
+ return -ENODEV;
+ }
+ devpriv->got_regions = 1;
+
+ resourceStart = pci_resource_start(devpriv->pdev, 0);
+
+ devpriv->base_addr = ioremap(resourceStart, SIZEOF_ADDRESS_SPACE);
+ if (devpriv->base_addr == NULL) {
+ printk("s626_attach: IOREMAP failed\n");
+ return -ENODEV;
+ }
+
+ if (devpriv->base_addr) {
+ //disable master interrupt
+ writel(0, devpriv->base_addr + P_IER);
+
+ //soft reset
+ writel(MC1_SOFT_RESET, devpriv->base_addr + P_MC1);
+
+ //DMA FIXME DMA//
+ DEBUG("s626_attach: DMA ALLOCATION\n");
+
+ //adc buffer allocation
+ devpriv->allocatedBuf = 0;
+
+ if ((devpriv->ANABuf.LogicalBase =
+ pci_alloc_consistent(devpriv->pdev, DMABUF_SIZE,
+ &appdma)) == NULL) {
+ printk("s626_attach: DMA Memory mapping error\n");
+ return -ENOMEM;
+ }
+
+ devpriv->ANABuf.PhysicalBase = appdma;
+
+ DEBUG("s626_attach: AllocDMAB ADC Logical=%p, bsize=%d, Physical=0x%x\n", devpriv->ANABuf.LogicalBase, DMABUF_SIZE, (uint32_t) devpriv->ANABuf.PhysicalBase);
+
+ devpriv->allocatedBuf++;
+
+ if ((devpriv->RPSBuf.LogicalBase =
+ pci_alloc_consistent(devpriv->pdev, DMABUF_SIZE,
+ &appdma)) == NULL) {
+ printk("s626_attach: DMA Memory mapping error\n");
+ return -ENOMEM;
+ }
+
+ devpriv->RPSBuf.PhysicalBase = appdma;
+
+ DEBUG("s626_attach: AllocDMAB RPS Logical=%p, bsize=%d, Physical=0x%x\n", devpriv->RPSBuf.LogicalBase, DMABUF_SIZE, (uint32_t) devpriv->RPSBuf.PhysicalBase);
+
+ devpriv->allocatedBuf++;
+
+ }
+
+ dev->board_ptr = s626_boards;
+ dev->board_name = thisboard->name;
+
+ if (alloc_subdevices(dev, 6) < 0)
+ return -ENOMEM;
+
+ dev->iobase = (unsigned long)devpriv->base_addr;
+ dev->irq = devpriv->pdev->irq;
+
+ //set up interrupt handler
+ if (dev->irq == 0) {
+ printk(" unknown irq (bad)\n");
+ } else {
+ if ((ret = comedi_request_irq(dev->irq, s626_irq_handler,
+ IRQF_SHARED, "s626", dev)) < 0) {
+ printk(" irq not available\n");
+ dev->irq = 0;
+ }
+ }
+
+ DEBUG("s626_attach: -- it opts %d,%d -- \n",
+ it->options[0], it->options[1]);
+
+ s = dev->subdevices + 0;
+ /* analog input subdevice */
+ dev->read_subdev = s;
+ /* we support single-ended (ground) and differential */
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_CMD_READ;
+ s->n_chan = thisboard->ai_chans;
+ s->maxdata = (0xffff >> 2);
+ s->range_table = &s626_range_table;
+ s->len_chanlist = thisboard->ai_chans; /* This is the maximum chanlist
+ length that the board can
+ handle */
+ s->insn_config = s626_ai_insn_config;
+ s->insn_read = s626_ai_insn_read;
+ s->do_cmd = s626_ai_cmd;
+ s->do_cmdtest = s626_ai_cmdtest;
+ s->cancel = s626_ai_cancel;
+
+ s = dev->subdevices + 1;
+ /* analog output subdevice */
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
+ s->n_chan = thisboard->ao_chans;
+ s->maxdata = (0x3fff);
+ s->range_table = &range_bipolar10;
+ s->insn_write = s626_ao_winsn;
+ s->insn_read = s626_ao_rinsn;
+
+ s = dev->subdevices + 2;
+ /* digital I/O subdevice */
+ s->type = COMEDI_SUBD_DIO;
+ s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
+ s->n_chan = S626_DIO_CHANNELS;
+ s->maxdata = 1;
+ s->io_bits = 0xffff;
+ s->private = &dio_private_A;
+ s->range_table = &range_digital;
+ s->insn_config = s626_dio_insn_config;
+ s->insn_bits = s626_dio_insn_bits;
+
+ s = dev->subdevices + 3;
+ /* digital I/O subdevice */
+ s->type = COMEDI_SUBD_DIO;
+ s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
+ s->n_chan = 16;
+ s->maxdata = 1;
+ s->io_bits = 0xffff;
+ s->private = &dio_private_B;
+ s->range_table = &range_digital;
+ s->insn_config = s626_dio_insn_config;
+ s->insn_bits = s626_dio_insn_bits;
+
+ s = dev->subdevices + 4;
+ /* digital I/O subdevice */
+ s->type = COMEDI_SUBD_DIO;
+ s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
+ s->n_chan = 16;
+ s->maxdata = 1;
+ s->io_bits = 0xffff;
+ s->private = &dio_private_C;
+ s->range_table = &range_digital;
+ s->insn_config = s626_dio_insn_config;
+ s->insn_bits = s626_dio_insn_bits;
+
+ s = dev->subdevices + 5;
+ /* encoder (counter) subdevice */
+ s->type = COMEDI_SUBD_COUNTER;
+ s->subdev_flags = SDF_WRITABLE | SDF_READABLE | SDF_LSAMPL;
+ s->n_chan = thisboard->enc_chans;
+ s->private = enc_private_data;
+ s->insn_config = s626_enc_insn_config;
+ s->insn_read = s626_enc_insn_read;
+ s->insn_write = s626_enc_insn_write;
+ s->maxdata = 0xffffff;
+ s->range_table = &range_unknown;
+
+ //stop ai_command
+ devpriv->ai_cmd_running = 0;
+
+ if (devpriv->base_addr && (devpriv->allocatedBuf == 2)) {
+ dma_addr_t pPhysBuf;
+ uint16_t chan;
+
+ // enab DEBI and audio pins, enable I2C interface.
+ MC_ENABLE(P_MC1, MC1_DEBI | MC1_AUDIO | MC1_I2C);
+ // Configure DEBI operating mode.
+ WR7146(P_DEBICFG, DEBI_CFG_SLAVE16 // Local bus is 16
+ // bits wide.
+ | (DEBI_TOUT << DEBI_CFG_TOUT_BIT) // Declare DEBI
+ // transfer timeout
+ // interval.
+ | DEBI_SWAP // Set up byte lane
+ // steering.
+ | DEBI_CFG_INTEL); // Intel-compatible
+ // local bus (DEBI
+ // never times out).
+ DEBUG("s626_attach: %d debi init -- %d\n",
+ DEBI_CFG_SLAVE16 | (DEBI_TOUT << DEBI_CFG_TOUT_BIT) |
+ DEBI_SWAP | DEBI_CFG_INTEL,
+ DEBI_CFG_INTEL | DEBI_CFG_TOQ | DEBI_CFG_INCQ |
+ DEBI_CFG_16Q);
+
+ //DEBI INIT S626 WR7146( P_DEBICFG, DEBI_CFG_INTEL | DEBI_CFG_TOQ
+ //| DEBI_CFG_INCQ| DEBI_CFG_16Q); //end
+
+ // Paging is disabled.
+ WR7146(P_DEBIPAGE, DEBI_PAGE_DISABLE); // Disable MMU paging.
+
+ // Init GPIO so that ADC Start* is negated.
+ WR7146(P_GPIO, GPIO_BASE | GPIO1_HI);
+
+ //IsBoardRevA is a boolean that indicates whether the board is
+ //RevA.
+
+ // VERSION 2.01 CHANGE: REV A & B BOARDS NOW SUPPORTED BY DYNAMIC
+ // EEPROM ADDRESS SELECTION. Initialize the I2C interface, which
+ // is used to access the onboard serial EEPROM. The EEPROM's I2C
+ // DeviceAddress is hardwired to a value that is dependent on the
+ // 626 board revision. On all board revisions, the EEPROM stores
+ // TrimDAC calibration constants for analog I/O. On RevB and
+ // higher boards, the DeviceAddress is hardwired to 0 to enable
+ // the EEPROM to also store the PCI SubVendorID and SubDeviceID;
+ // this is the address at which the SAA7146 expects a
+ // configuration EEPROM to reside. On RevA boards, the EEPROM
+ // device address, which is hardwired to 4, prevents the SAA7146
+ // from retrieving PCI sub-IDs, so the SAA7146 uses its built-in
+ // default values, instead.
+
+ // devpriv->I2Cards= IsBoardRevA ? 0xA8 : 0xA0; // Set I2C EEPROM
+ // DeviceType (0xA0)
+ // and DeviceAddress<<1.
+
+ devpriv->I2CAdrs = 0xA0; // I2C device address for onboard
+ // eeprom(revb)
+
+ // Issue an I2C ABORT command to halt any I2C operation in
+ //progress and reset BUSY flag.
+ WR7146(P_I2CSTAT, I2C_CLKSEL | I2C_ABORT); // Write I2C control:
+ // abort any I2C
+ // activity.
+ MC_ENABLE(P_MC2, MC2_UPLD_IIC); // Invoke command
+ // upload
+ while ((RR7146(P_MC2) & MC2_UPLD_IIC) == 0) ; // and wait for
+ // upload to
+ // complete.
+
+ // Per SAA7146 data sheet, write to STATUS reg twice to reset all
+ // I2C error flags.
+ for (i = 0; i < 2; i++) {
+ WR7146(P_I2CSTAT, I2C_CLKSEL); // Write I2C control: reset
+ // error flags.
+ MC_ENABLE(P_MC2, MC2_UPLD_IIC); // Invoke command upload
+ while (!MC_TEST(P_MC2, MC2_UPLD_IIC)) ; // and wait for
+ // upload to
+ // complete.
+ }
+
+ // Init audio interface functional attributes: set DAC/ADC serial
+ // clock rates, invert DAC serial clock so that DAC data setup
+ // times are satisfied, enable DAC serial clock out.
+ WR7146(P_ACON2, ACON2_INIT);
+
+ // Set up TSL1 slot list, which is used to control the
+ // accumulation of ADC data: RSD1 = shift data in on SD1. SIB_A1
+ // = store data uint8_t at next available location in FB BUFFER1
+ // register.
+ WR7146(P_TSL1, RSD1 | SIB_A1); // Fetch ADC high data
+ // uint8_t.
+ WR7146(P_TSL1 + 4, RSD1 | SIB_A1 | EOS); // Fetch ADC low data
+ // uint8_t; end of
+ // TSL1.
+
+ // enab TSL1 slot list so that it executes all the time.
+ WR7146(P_ACON1, ACON1_ADCSTART);
+
+ // Initialize RPS registers used for ADC.
+
+ //Physical start of RPS program.
+ WR7146(P_RPSADDR1, (uint32_t) devpriv->RPSBuf.PhysicalBase);
+
+ WR7146(P_RPSPAGE1, 0); // RPS program performs no
+ // explicit mem writes.
+ WR7146(P_RPS1_TOUT, 0); // Disable RPS timeouts.
+
+ // SAA7146 BUG WORKAROUND. Initialize SAA7146 ADC interface to a
+ // known state by invoking ADCs until FB BUFFER 1 register shows
+ // that it is correctly receiving ADC data. This is necessary
+ // because the SAA7146 ADC interface does not start up in a
+ // defined state after a PCI reset.
+
+/* PollList = EOPL; // Create a simple polling */
+/* // list for analog input */
+/* // channel 0. */
+/* ResetADC( dev, &PollList ); */
+
+/* s626_ai_rinsn(dev,dev->subdevices,NULL,data); //( &AdcData ); // */
+/* //Get initial ADC */
+/* //value. */
+
+/* StartVal = data[0]; */
+
+/* // VERSION 2.01 CHANGE: TIMEOUT ADDED TO PREVENT HANGED EXECUTION. */
+/* // Invoke ADCs until the new ADC value differs from the initial */
+/* // value or a timeout occurs. The timeout protects against the */
+/* // possibility that the driver is restarting and the ADC data is a */
+/* // fixed value resulting from the applied ADC analog input being */
+/* // unusually quiet or at the rail. */
+
+/* for ( index = 0; index < 500; index++ ) */
+/* { */
+/* s626_ai_rinsn(dev,dev->subdevices,NULL,data); */
+/* AdcData = data[0]; //ReadADC( &AdcData ); */
+/* if ( AdcData != StartVal ) */
+/* break; */
+/* } */
+
+ // end initADC
+
+ // init the DAC interface
+
+ // Init Audio2's output DMAC attributes: burst length = 1 DWORD,
+ // threshold = 1 DWORD.
+ WR7146(P_PCI_BT_A, 0);
+
+ // Init Audio2's output DMA physical addresses. The protection
+ // address is set to 1 DWORD past the base address so that a
+ // single DWORD will be transferred each time a DMA transfer is
+ // enabled.
+
+ pPhysBuf =
+ devpriv->ANABuf.PhysicalBase +
+ (DAC_WDMABUF_OS * sizeof(uint32_t));
+
+ WR7146(P_BASEA2_OUT, (uint32_t) pPhysBuf); // Buffer base adrs.
+ WR7146(P_PROTA2_OUT, (uint32_t) (pPhysBuf + sizeof(uint32_t))); // Protection address.
+
+ // Cache Audio2's output DMA buffer logical address. This is
+ // where DAC data is buffered for A2 output DMA transfers.
+ devpriv->pDacWBuf =
+ (uint32_t *) devpriv->ANABuf.LogicalBase +
+ DAC_WDMABUF_OS;
+
+ // Audio2's output channels does not use paging. The protection
+ // violation handling bit is set so that the DMAC will
+ // automatically halt and its PCI address pointer will be reset
+ // when the protection address is reached.
+ WR7146(P_PAGEA2_OUT, 8);
+
+ // Initialize time slot list 2 (TSL2), which is used to control
+ // the clock generation for and serialization of data to be sent
+ // to the DAC devices. Slot 0 is a NOP that is used to trap TSL
+ // execution; this permits other slots to be safely modified
+ // without first turning off the TSL sequencer (which is
+ // apparently impossible to do). Also, SD3 (which is driven by a
+ // pull-up resistor) is shifted in and stored to the MSB of
+ // FB_BUFFER2 to be used as evidence that the slot sequence has
+ // not yet finished executing.
+ SETVECT(0, XSD2 | RSD3 | SIB_A2 | EOS); // Slot 0: Trap TSL
+ // execution, shift 0xFF
+ // into FB_BUFFER2.
+
+ // Initialize slot 1, which is constant. Slot 1 causes a DWORD to
+ // be transferred from audio channel 2's output FIFO to the FIFO's
+ // output buffer so that it can be serialized and sent to the DAC
+ // during subsequent slots. All remaining slots are dynamically
+ // populated as required by the target DAC device.
+ SETVECT(1, LF_A2); // Slot 1: Fetch DWORD from Audio2's
+ // output FIFO.
+
+ // Start DAC's audio interface (TSL2) running.
+ WR7146(P_ACON1, ACON1_DACSTART);
+
+ ////////////////////////////////////////////////////////
+
+ // end init DAC interface
+
+ // Init Trim DACs to calibrated values. Do it twice because the
+ // SAA7146 audio channel does not always reset properly and
+ // sometimes causes the first few TrimDAC writes to malfunction.
+
+ LoadTrimDACs(dev);
+ LoadTrimDACs(dev); // Insurance.
+
+ //////////////////////////////////////////////////////////////////
+ // Manually init all gate array hardware in case this is a soft
+ // reset (we have no way of determining whether this is a warm or
+ // cold start). This is necessary because the gate array will
+ // reset only in response to a PCI hard reset; there is no soft
+ // reset function.
+
+ // Init all DAC outputs to 0V and init all DAC setpoint and
+ // polarity images.
+ for (chan = 0; chan < S626_DAC_CHANNELS; chan++)
+ SetDAC(dev, chan, 0);
+
+ // Init image of WRMISC2 Battery Charger Enabled control bit.
+ // This image is used when the state of the charger control bit,
+ // which has no direct hardware readback mechanism, is queried.
+ devpriv->ChargeEnabled = 0;
+
+ // Init image of watchdog timer interval in WRMISC2. This image
+ // maintains the value of the control bits of MISC2 are
+ // continuously reset to zero as long as the WD timer is disabled.
+ devpriv->WDInterval = 0;
+
+ // Init Counter Interrupt enab mask for RDMISC2. This mask is
+ // applied against MISC2 when testing to determine which timer
+ // events are requesting interrupt service.
+ devpriv->CounterIntEnabs = 0;
+
+ // Init counters.
+ CountersInit(dev);
+
+ // Without modifying the state of the Battery Backup enab, disable
+ // the watchdog timer, set DIO channels 0-5 to operate in the
+ // standard DIO (vs. counter overflow) mode, disable the battery
+ // charger, and reset the watchdog interval selector to zero.
+ WriteMISC2(dev, (uint16_t) (DEBIread(dev,
+ LP_RDMISC2) & MISC2_BATT_ENABLE));
+
+ // Initialize the digital I/O subsystem.
+ s626_dio_init(dev);
+
+ //enable interrupt test
+ // writel(IRQ_GPIO3 | IRQ_RPS1,devpriv->base_addr+P_IER);
+ }
+
+ DEBUG("s626_attach: comedi%d s626 attached %04x\n", dev->minor,
+ (uint32_t) devpriv->base_addr);
+
+ return 1;
+}
+
+static lsampl_t s626_ai_reg_to_uint(int data)
+{
+ lsampl_t tempdata;
+
+ tempdata = (data >> 18);
+ if (tempdata & 0x2000)
+ tempdata &= 0x1fff;
+ else
+ tempdata += (1 << 13);
+
+ return tempdata;
+}
+
+/* static lsampl_t s626_uint_to_reg(comedi_subdevice *s, int data){ */
+/* return 0; */
+/* } */
+
+static irqreturn_t s626_irq_handler(int irq, void *d PT_REGS_ARG)
+{
+ comedi_device *dev = d;
+ comedi_subdevice *s;
+ comedi_cmd *cmd;
+ enc_private *k;
+ unsigned long flags;
+ int32_t *readaddr;
+ uint32_t irqtype, irqstatus;
+ int i = 0;
+ sampl_t tempdata;
+ uint8_t group;
+ uint16_t irqbit;
+
+ DEBUG("s626_irq_handler: interrupt request recieved!!!\n");
+
+ if (dev->attached == 0)
+ return IRQ_NONE;
+ // lock to avoid race with comedi_poll
+ comedi_spin_lock_irqsave(&dev->spinlock, flags);
+
+ //save interrupt enable register state
+ irqstatus = readl(devpriv->base_addr + P_IER);
+
+ //read interrupt type
+ irqtype = readl(devpriv->base_addr + P_ISR);
+
+ //disable master interrupt
+ writel(0, devpriv->base_addr + P_IER);
+
+ //clear interrupt
+ writel(irqtype, devpriv->base_addr + P_ISR);
+
+ //do somethings
+ DEBUG("s626_irq_handler: interrupt type %d\n", irqtype);
+
+ switch (irqtype) {
+ case IRQ_RPS1: // end_of_scan occurs
+
+ DEBUG("s626_irq_handler: RPS1 irq detected\n");
+
+ // manage ai subdevice
+ s = dev->subdevices;
+ cmd = &(s->async->cmd);
+
+ // Init ptr to DMA buffer that holds new ADC data. We skip the
+ // first uint16_t in the buffer because it contains junk data from
+ // the final ADC of the previous poll list scan.
+ readaddr = (int32_t *) devpriv->ANABuf.LogicalBase + 1;
+
+ // get the data and hand it over to comedi
+ for (i = 0; i < (s->async->cmd.chanlist_len); i++) {
+ // Convert ADC data to 16-bit integer values and copy to application
+ // buffer.
+ tempdata = s626_ai_reg_to_uint((int)*readaddr);
+ readaddr++;
+
+ //put data into read buffer
+ // comedi_buf_put(s->async, tempdata);
+ if (cfc_write_to_buffer(s, tempdata) == 0)
+ printk("s626_irq_handler: cfc_write_to_buffer error!\n");
+
+ DEBUG("s626_irq_handler: ai channel %d acquired: %d\n",
+ i, tempdata);
+ }
+
+ //end of scan occurs
+ s->async->events |= COMEDI_CB_EOS;
+
+ if (!(devpriv->ai_continous))
+ devpriv->ai_sample_count--;
+ if (devpriv->ai_sample_count <= 0) {
+ devpriv->ai_cmd_running = 0;
+
+ // Stop RPS program.
+ MC_DISABLE(P_MC1, MC1_ERPS1);
+
+ //send end of acquisition
+ s->async->events |= COMEDI_CB_EOA;
+
+ //disable master interrupt
+ irqstatus = 0;
+ }
+
+ if (devpriv->ai_cmd_running && cmd->scan_begin_src == TRIG_EXT) {
+ DEBUG("s626_irq_handler: enable interrupt on dio channel %d\n", cmd->scan_begin_arg);
+
+ s626_dio_set_irq(dev, cmd->scan_begin_arg);
+
+ DEBUG("s626_irq_handler: External trigger is set!!!\n");
+ }
+ // tell comedi that data is there
+ DEBUG("s626_irq_handler: events %d\n", s->async->events);
+ comedi_event(dev, s);
+ break;
+ case IRQ_GPIO3: //check dio and conter interrupt
+
+ DEBUG("s626_irq_handler: GPIO3 irq detected\n");
+
+ // manage ai subdevice
+ s = dev->subdevices;
+ cmd = &(s->async->cmd);
+
+ //s626_dio_clear_irq(dev);
+
+ for (group = 0; group < S626_DIO_BANKS; group++) {
+ irqbit = 0;
+ //read interrupt type
+ irqbit = DEBIread(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->RDCapFlg);
+
+ //check if interrupt is generated from dio channels
+ if (irqbit) {
+ s626_dio_reset_irq(dev, group, irqbit);
+ DEBUG("s626_irq_handler: check interrupt on dio group %d %d\n", group, i);
+ if (devpriv->ai_cmd_running) {
+ //check if interrupt is an ai acquisition start trigger
+ if ((irqbit >> (cmd->start_arg -
+ (16 * group)))
+ == 1
+ && cmd->start_src == TRIG_EXT) {
+ DEBUG("s626_irq_handler: Edge capture interrupt recieved from channel %d\n", cmd->start_arg);
+
+ // Start executing the RPS program.
+ MC_ENABLE(P_MC1, MC1_ERPS1);
+
+ DEBUG("s626_irq_handler: aquisition start triggered!!!\n");
+
+ if (cmd->scan_begin_src ==
+ TRIG_EXT) {
+ DEBUG("s626_ai_cmd: enable interrupt on dio channel %d\n", cmd->scan_begin_arg);
+
+ s626_dio_set_irq(dev,
+ cmd->
+ scan_begin_arg);
+
+ DEBUG("s626_irq_handler: External scan trigger is set!!!\n");
+ }
+ }
+ if ((irqbit >> (cmd->scan_begin_arg -
+ (16 * group)))
+ == 1
+ && cmd->scan_begin_src ==
+ TRIG_EXT) {
+ DEBUG("s626_irq_handler: Edge capture interrupt recieved from channel %d\n", cmd->scan_begin_arg);
+
+ // Trigger ADC scan loop start by setting RPS Signal 0.
+ MC_ENABLE(P_MC2, MC2_ADC_RPS);
+
+ DEBUG("s626_irq_handler: scan triggered!!! %d\n", devpriv->ai_sample_count);
+ if (cmd->convert_src ==
+ TRIG_EXT) {
+
+ DEBUG("s626_ai_cmd: enable interrupt on dio channel %d group %d\n", cmd->convert_arg - (16 * group), group);
+
+ devpriv->
+ ai_convert_count
+ =
+ cmd->
+ chanlist_len;
+
+ s626_dio_set_irq(dev,
+ cmd->
+ convert_arg);
+
+ DEBUG("s626_irq_handler: External convert trigger is set!!!\n");
+ }
+
+ if (cmd->convert_src ==
+ TRIG_TIMER) {
+ k = &encpriv[5];
+ devpriv->
+ ai_convert_count
+ =
+ cmd->
+ chanlist_len;
+ k->SetEnable(dev, k,
+ CLKENAB_ALWAYS);
+ }
+ }
+ if ((irqbit >> (cmd->convert_arg -
+ (16 * group)))
+ == 1
+ && cmd->convert_src ==
+ TRIG_EXT) {
+ DEBUG("s626_irq_handler: Edge capture interrupt recieved from channel %d\n", cmd->convert_arg);
+
+ // Trigger ADC scan loop start by setting RPS Signal 0.
+ MC_ENABLE(P_MC2, MC2_ADC_RPS);
+
+ DEBUG("s626_irq_handler: adc convert triggered!!!\n");
+
+ devpriv->ai_convert_count--;
+
+ if (devpriv->ai_convert_count >
+ 0) {
+
+ DEBUG("s626_ai_cmd: enable interrupt on dio channel %d group %d\n", cmd->convert_arg - (16 * group), group);
+
+ s626_dio_set_irq(dev,
+ cmd->
+ convert_arg);
+
+ DEBUG("s626_irq_handler: External trigger is set!!!\n");
+ }
+ }
+ }
+ break;
+ }
+ }
+
+ //read interrupt type
+ irqbit = DEBIread(dev, LP_RDMISC2);
+
+ //check interrupt on counters
+ DEBUG("s626_irq_handler: check counters interrupt %d\n",
+ irqbit);
+
+ if (irqbit & IRQ_COINT1A) {
+ DEBUG("s626_irq_handler: interrupt on counter 1A overflow\n");
+ k = &encpriv[0];
+
+ //clear interrupt capture flag
+ k->ResetCapFlags(dev, k);
+ }
+ if (irqbit & IRQ_COINT2A) {
+ DEBUG("s626_irq_handler: interrupt on counter 2A overflow\n");
+ k = &encpriv[1];
+
+ //clear interrupt capture flag
+ k->ResetCapFlags(dev, k);
+ }
+ if (irqbit & IRQ_COINT3A) {
+ DEBUG("s626_irq_handler: interrupt on counter 3A overflow\n");
+ k = &encpriv[2];
+
+ //clear interrupt capture flag
+ k->ResetCapFlags(dev, k);
+ }
+ if (irqbit & IRQ_COINT1B) {
+ DEBUG("s626_irq_handler: interrupt on counter 1B overflow\n");
+ k = &encpriv[3];
+
+ //clear interrupt capture flag
+ k->ResetCapFlags(dev, k);
+ }
+ if (irqbit & IRQ_COINT2B) {
+ DEBUG("s626_irq_handler: interrupt on counter 2B overflow\n");
+ k = &encpriv[4];
+
+ //clear interrupt capture flag
+ k->ResetCapFlags(dev, k);
+
+ if (devpriv->ai_convert_count > 0) {
+ devpriv->ai_convert_count--;
+ if (devpriv->ai_convert_count == 0)
+ k->SetEnable(dev, k, CLKENAB_INDEX);
+
+ if (cmd->convert_src == TRIG_TIMER) {
+ DEBUG("s626_irq_handler: conver timer trigger!!! %d\n", devpriv->ai_convert_count);
+
+ // Trigger ADC scan loop start by setting RPS Signal 0.
+ MC_ENABLE(P_MC2, MC2_ADC_RPS);
+ }
+ }
+ }
+ if (irqbit & IRQ_COINT3B) {
+ DEBUG("s626_irq_handler: interrupt on counter 3B overflow\n");
+ k = &encpriv[5];
+
+ //clear interrupt capture flag
+ k->ResetCapFlags(dev, k);
+
+ if (cmd->scan_begin_src == TRIG_TIMER) {
+ DEBUG("s626_irq_handler: scan timer trigger!!!\n");
+
+ // Trigger ADC scan loop start by setting RPS Signal 0.
+ MC_ENABLE(P_MC2, MC2_ADC_RPS);
+ }
+
+ if (cmd->convert_src == TRIG_TIMER) {
+ DEBUG("s626_irq_handler: convert timer trigger is set\n");
+ k = &encpriv[4];
+ devpriv->ai_convert_count = cmd->chanlist_len;
+ k->SetEnable(dev, k, CLKENAB_ALWAYS);
+ }
+ }
+ }
+
+ //enable interrupt
+ writel(irqstatus, devpriv->base_addr + P_IER);
+
+ DEBUG("s626_irq_handler: exit interrupt service routine.\n");
+
+ comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
+ return IRQ_HANDLED;
+}
+
+static int s626_detach(comedi_device * dev)
+{
+ if (devpriv) {
+ //stop ai_command
+ devpriv->ai_cmd_running = 0;
+
+ if (devpriv->base_addr) {
+ //interrupt mask
+ WR7146(P_IER, 0); // Disable master interrupt.
+ WR7146(P_ISR, IRQ_GPIO3 | IRQ_RPS1); // Clear board's IRQ status flag.
+
+ // Disable the watchdog timer and battery charger.
+ WriteMISC2(dev, 0);
+
+ // Close all interfaces on 7146 device.
+ WR7146(P_MC1, MC1_SHUTDOWN);
+ WR7146(P_ACON1, ACON1_BASE);
+
+ CloseDMAB(dev, &devpriv->RPSBuf, DMABUF_SIZE);
+ CloseDMAB(dev, &devpriv->ANABuf, DMABUF_SIZE);
+ }
+
+ if (dev->irq) {
+ comedi_free_irq(dev->irq, dev);
+ }
+
+ if (devpriv->base_addr) {
+ iounmap(devpriv->base_addr);
+ }
+
+ if (devpriv->pdev) {
+ if (devpriv->got_regions) {
+ comedi_pci_disable(devpriv->pdev);
+ }
+ pci_dev_put(devpriv->pdev);
+ }
+ }
+
+ DEBUG("s626_detach: S626 detached!\n");
+
+ return 0;
+}
+
+/*
+ * this functions build the RPS program for hardware driven acquistion
+ */
+void ResetADC(comedi_device * dev, uint8_t * ppl)
+{
+ register uint32_t *pRPS;
+ uint32_t JmpAdrs;
+ uint16_t i;
+ uint16_t n;
+ uint32_t LocalPPL;
+ comedi_cmd *cmd = &(dev->subdevices->async->cmd);
+
+ // Stop RPS program in case it is currently running.
+ MC_DISABLE(P_MC1, MC1_ERPS1);
+
+ // Set starting logical address to write RPS commands.
+ pRPS = (uint32_t *) devpriv->RPSBuf.LogicalBase;
+
+ // Initialize RPS instruction pointer.
+ WR7146(P_RPSADDR1, (uint32_t) devpriv->RPSBuf.PhysicalBase);
+
+ // Construct RPS program in RPSBuf DMA buffer
+
+ if (cmd != NULL && cmd->scan_begin_src != TRIG_FOLLOW) {
+ DEBUG("ResetADC: scan_begin pause inserted\n");
+ // Wait for Start trigger.
+ *pRPS++ = RPS_PAUSE | RPS_SIGADC;
+ *pRPS++ = RPS_CLRSIGNAL | RPS_SIGADC;
+ }
+ // SAA7146 BUG WORKAROUND Do a dummy DEBI Write. This is necessary
+ // because the first RPS DEBI Write following a non-RPS DEBI write
+ // seems to always fail. If we don't do this dummy write, the ADC
+ // gain might not be set to the value required for the first slot in
+ // the poll list; the ADC gain would instead remain unchanged from
+ // the previously programmed value.
+ *pRPS++ = RPS_LDREG | (P_DEBICMD >> 2); // Write DEBI Write command
+ // and address to shadow RAM.
+ *pRPS++ = DEBI_CMD_WRWORD | LP_GSEL;
+ *pRPS++ = RPS_LDREG | (P_DEBIAD >> 2); // Write DEBI immediate data
+ // to shadow RAM:
+ *pRPS++ = GSEL_BIPOLAR5V; // arbitrary immediate data
+ // value.
+ *pRPS++ = RPS_CLRSIGNAL | RPS_DEBI; // Reset "shadow RAM
+ // uploaded" flag.
+ *pRPS++ = RPS_UPLOAD | RPS_DEBI; // Invoke shadow RAM upload.
+ *pRPS++ = RPS_PAUSE | RPS_DEBI; // Wait for shadow upload to finish.
+
+ // Digitize all slots in the poll list. This is implemented as a
+ // for loop to limit the slot count to 16 in case the application
+ // forgot to set the EOPL flag in the final slot.
+ for (devpriv->AdcItems = 0; devpriv->AdcItems < 16; devpriv->AdcItems++) {
+ // Convert application's poll list item to private board class
+ // format. Each app poll list item is an uint8_t with form
+ // (EOPL,x,x,RANGE,CHAN<3:0>), where RANGE code indicates 0 =
+ // +-10V, 1 = +-5V, and EOPL = End of Poll List marker.
+ LocalPPL =
+ (*ppl << 8) | (*ppl & 0x10 ? GSEL_BIPOLAR5V :
+ GSEL_BIPOLAR10V);
+
+ // Switch ADC analog gain.
+ *pRPS++ = RPS_LDREG | (P_DEBICMD >> 2); // Write DEBI command
+ // and address to
+ // shadow RAM.
+ *pRPS++ = DEBI_CMD_WRWORD | LP_GSEL;
+ *pRPS++ = RPS_LDREG | (P_DEBIAD >> 2); // Write DEBI
+ // immediate data to
+ // shadow RAM.
+ *pRPS++ = LocalPPL;
+ *pRPS++ = RPS_CLRSIGNAL | RPS_DEBI; // Reset "shadow RAM uploaded"
+ // flag.
+ *pRPS++ = RPS_UPLOAD | RPS_DEBI; // Invoke shadow RAM upload.
+ *pRPS++ = RPS_PAUSE | RPS_DEBI; // Wait for shadow upload to
+ // finish.
+
+ // Select ADC analog input channel.
+ *pRPS++ = RPS_LDREG | (P_DEBICMD >> 2); // Write DEBI command
+ // and address to
+ // shadow RAM.
+ *pRPS++ = DEBI_CMD_WRWORD | LP_ISEL;
+ *pRPS++ = RPS_LDREG | (P_DEBIAD >> 2); // Write DEBI
+ // immediate data to
+ // shadow RAM.
+ *pRPS++ = LocalPPL;
+ *pRPS++ = RPS_CLRSIGNAL | RPS_DEBI; // Reset "shadow RAM uploaded"
+ // flag.
+ *pRPS++ = RPS_UPLOAD | RPS_DEBI; // Invoke shadow RAM upload.
+ *pRPS++ = RPS_PAUSE | RPS_DEBI; // Wait for shadow upload to
+ // finish.
+
+ // Delay at least 10 microseconds for analog input settling.
+ // Instead of padding with NOPs, we use RPS_JUMP instructions
+ // here; this allows us to produce a longer delay than is
+ // possible with NOPs because each RPS_JUMP flushes the RPS'
+ // instruction prefetch pipeline.
+ JmpAdrs =
+ (uint32_t) devpriv->RPSBuf.PhysicalBase +
+ (uint32_t) ((unsigned long)pRPS -
+ (unsigned long)devpriv->RPSBuf.LogicalBase);
+ for (i = 0; i < (10 * RPSCLK_PER_US / 2); i++) {
+ JmpAdrs += 8; // Repeat to implement time delay:
+ *pRPS++ = RPS_JUMP; // Jump to next RPS instruction.
+ *pRPS++ = JmpAdrs;
+ }
+
+ if (cmd != NULL && cmd->convert_src != TRIG_NOW) {
+ DEBUG("ResetADC: convert pause inserted\n");
+ // Wait for Start trigger.
+ *pRPS++ = RPS_PAUSE | RPS_SIGADC;
+ *pRPS++ = RPS_CLRSIGNAL | RPS_SIGADC;
+ }
+ // Start ADC by pulsing GPIO1.
+ *pRPS++ = RPS_LDREG | (P_GPIO >> 2); // Begin ADC Start pulse.
+ *pRPS++ = GPIO_BASE | GPIO1_LO;
+ *pRPS++ = RPS_NOP;
+ // VERSION 2.03 CHANGE: STRETCH OUT ADC START PULSE.
+ *pRPS++ = RPS_LDREG | (P_GPIO >> 2); // End ADC Start pulse.
+ *pRPS++ = GPIO_BASE | GPIO1_HI;
+
+ // Wait for ADC to complete (GPIO2 is asserted high when ADC not
+ // busy) and for data from previous conversion to shift into FB
+ // BUFFER 1 register.
+ *pRPS++ = RPS_PAUSE | RPS_GPIO2; // Wait for ADC done.
+
+ // Transfer ADC data from FB BUFFER 1 register to DMA buffer.
+ *pRPS++ = RPS_STREG | (BUGFIX_STREG(P_FB_BUFFER1) >> 2);
+ *pRPS++ =
+ (uint32_t) devpriv->ANABuf.PhysicalBase +
+ (devpriv->AdcItems << 2);
+
+ // If this slot's EndOfPollList flag is set, all channels have
+ // now been processed.
+ if (*ppl++ & EOPL) {
+ devpriv->AdcItems++; // Adjust poll list item count.
+ break; // Exit poll list processing loop.
+ }
+ }
+ DEBUG("ResetADC: ADC items %d \n", devpriv->AdcItems);
+
+ // VERSION 2.01 CHANGE: DELAY CHANGED FROM 250NS to 2US. Allow the
+ // ADC to stabilize for 2 microseconds before starting the final
+ // (dummy) conversion. This delay is necessary to allow sufficient
+ // time between last conversion finished and the start of the dummy
+ // conversion. Without this delay, the last conversion's data value
+ // is sometimes set to the previous conversion's data value.
+ for (n = 0; n < (2 * RPSCLK_PER_US); n++)
+ *pRPS++ = RPS_NOP;
+
+ // Start a dummy conversion to cause the data from the last
+ // conversion of interest to be shifted in.
+ *pRPS++ = RPS_LDREG | (P_GPIO >> 2); // Begin ADC Start pulse.
+ *pRPS++ = GPIO_BASE | GPIO1_LO;
+ *pRPS++ = RPS_NOP;
+ // VERSION 2.03 CHANGE: STRETCH OUT ADC START PULSE.
+ *pRPS++ = RPS_LDREG | (P_GPIO >> 2); // End ADC Start pulse.
+ *pRPS++ = GPIO_BASE | GPIO1_HI;
+
+ // Wait for the data from the last conversion of interest to arrive
+ // in FB BUFFER 1 register.
+ *pRPS++ = RPS_PAUSE | RPS_GPIO2; // Wait for ADC done.
+
+ // Transfer final ADC data from FB BUFFER 1 register to DMA buffer.
+ *pRPS++ = RPS_STREG | (BUGFIX_STREG(P_FB_BUFFER1) >> 2); //
+ *pRPS++ =
+ (uint32_t) devpriv->ANABuf.PhysicalBase +
+ (devpriv->AdcItems << 2);
+
+ // Indicate ADC scan loop is finished.
+ // *pRPS++= RPS_CLRSIGNAL | RPS_SIGADC ; // Signal ReadADC() that scan is done.
+
+ //invoke interrupt
+ if (devpriv->ai_cmd_running == 1) {
+ DEBUG("ResetADC: insert irq in ADC RPS task\n");
+ *pRPS++ = RPS_IRQ;
+ }
+ // Restart RPS program at its beginning.
+ *pRPS++ = RPS_JUMP; // Branch to start of RPS program.
+ *pRPS++ = (uint32_t) devpriv->RPSBuf.PhysicalBase;
+
+ // End of RPS program build
+ // ------------------------------------------------------------
+}
+
+/* TO COMPLETE, IF NECESSARY */
+static int s626_ai_insn_config(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+
+ return -EINVAL;
+}
+
+/* static int s626_ai_rinsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data) */
+/* { */
+/* register uint8_t i; */
+/* register int32_t *readaddr; */
+
+/* DEBUG("as626_ai_rinsn: ai_rinsn enter \n"); */
+
+/* // Trigger ADC scan loop start by setting RPS Signal 0. */
+/* MC_ENABLE( P_MC2, MC2_ADC_RPS ); */
+
+/* // Wait until ADC scan loop is finished (RPS Signal 0 reset). */
+/* while ( MC_TEST( P_MC2, MC2_ADC_RPS ) ); */
+
+/* // Init ptr to DMA buffer that holds new ADC data. We skip the */
+/* // first uint16_t in the buffer because it contains junk data from */
+/* // the final ADC of the previous poll list scan. */
+/* readaddr = (uint32_t *)devpriv->ANABuf.LogicalBase + 1; */
+
+/* // Convert ADC data to 16-bit integer values and copy to application */
+/* // buffer. */
+/* for ( i = 0; i < devpriv->AdcItems; i++ ) { */
+/* *data = s626_ai_reg_to_uint( *readaddr++ ); */
+/* DEBUG("s626_ai_rinsn: data %d \n",*data); */
+/* data++; */
+/* } */
+
+/* DEBUG("s626_ai_rinsn: ai_rinsn escape \n"); */
+/* return i; */
+/* } */
+
+static int s626_ai_insn_read(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ uint16_t chan = CR_CHAN(insn->chanspec);
+ uint16_t range = CR_RANGE(insn->chanspec);
+ uint16_t AdcSpec = 0;
+ uint32_t GpioImage;
+ int n;
+
+/* //interrupt call test */
+/* writel(IRQ_GPIO3,devpriv->base_addr+P_PSR); //Writing a logical 1 */
+/* //into any of the RPS_PSR */
+/* //bits causes the */
+/* //corresponding interrupt */
+/* //to be generated if */
+/* //enabled */
+
+ DEBUG("s626_ai_insn_read: entering\n");
+
+ // Convert application's ADC specification into form
+ // appropriate for register programming.
+ if (range == 0)
+ AdcSpec = (chan << 8) | (GSEL_BIPOLAR5V);
+ else
+ AdcSpec = (chan << 8) | (GSEL_BIPOLAR10V);
+
+ // Switch ADC analog gain.
+ DEBIwrite(dev, LP_GSEL, AdcSpec); // Set gain.
+
+ // Select ADC analog input channel.
+ DEBIwrite(dev, LP_ISEL, AdcSpec); // Select channel.
+
+ for (n = 0; n < insn->n; n++) {
+
+ // Delay 10 microseconds for analog input settling.
+ comedi_udelay(10);
+
+ // Start ADC by pulsing GPIO1 low.
+ GpioImage = RR7146(P_GPIO);
+ // Assert ADC Start command
+ WR7146(P_GPIO, GpioImage & ~GPIO1_HI);
+ // and stretch it out.
+ WR7146(P_GPIO, GpioImage & ~GPIO1_HI);
+ WR7146(P_GPIO, GpioImage & ~GPIO1_HI);
+ // Negate ADC Start command.
+ WR7146(P_GPIO, GpioImage | GPIO1_HI);
+
+ // Wait for ADC to complete (GPIO2 is asserted high when
+ // ADC not busy) and for data from previous conversion to
+ // shift into FB BUFFER 1 register.
+
+ // Wait for ADC done.
+ while (!(RR7146(P_PSR) & PSR_GPIO2)) ;
+
+ // Fetch ADC data.
+ if (n != 0)
+ data[n - 1] = s626_ai_reg_to_uint(RR7146(P_FB_BUFFER1));
+
+ // Allow the ADC to stabilize for 4 microseconds before
+ // starting the next (final) conversion. This delay is
+ // necessary to allow sufficient time between last
+ // conversion finished and the start of the next
+ // conversion. Without this delay, the last conversion's
+ // data value is sometimes set to the previous
+ // conversion's data value.
+ comedi_udelay(4);
+ }
+
+ // Start a dummy conversion to cause the data from the
+ // previous conversion to be shifted in.
+ GpioImage = RR7146(P_GPIO);
+
+ //Assert ADC Start command
+ WR7146(P_GPIO, GpioImage & ~GPIO1_HI);
+ // and stretch it out.
+ WR7146(P_GPIO, GpioImage & ~GPIO1_HI);
+ WR7146(P_GPIO, GpioImage & ~GPIO1_HI);
+ // Negate ADC Start command.
+ WR7146(P_GPIO, GpioImage | GPIO1_HI);
+
+ // Wait for the data to arrive in FB BUFFER 1 register.
+
+ // Wait for ADC done.
+ while (!(RR7146(P_PSR) & PSR_GPIO2)) ;
+
+ // Fetch ADC data from audio interface's input shift
+ // register.
+
+ // Fetch ADC data.
+ if (n != 0)
+ data[n - 1] = s626_ai_reg_to_uint(RR7146(P_FB_BUFFER1));
+
+ DEBUG("s626_ai_insn_read: samples %d, data %d\n", n, data[n - 1]);
+
+ return n;
+}
+
+static int s626_ai_load_polllist(uint8_t * ppl, comedi_cmd * cmd)
+{
+
+ int n;
+
+ for (n = 0; n < cmd->chanlist_len; n++) {
+ if (CR_RANGE((cmd->chanlist)[n]) == 0)
+ ppl[n] = (CR_CHAN((cmd->chanlist)[n])) | (RANGE_5V);
+ else
+ ppl[n] = (CR_CHAN((cmd->chanlist)[n])) | (RANGE_10V);
+ }
+ ppl[n - 1] |= EOPL;
+
+ return n;
+}
+
+static int s626_ai_inttrig(comedi_device * dev, comedi_subdevice * s,
+ unsigned int trignum)
+{
+ if (trignum != 0)
+ return -EINVAL;
+
+ DEBUG("s626_ai_inttrig: trigger adc start...");
+
+ // Start executing the RPS program.
+ MC_ENABLE(P_MC1, MC1_ERPS1);
+
+ s->async->inttrig = NULL;
+
+ DEBUG(" done\n");
+
+ return 1;
+}
+
+/* TO COMPLETE */
+static int s626_ai_cmd(comedi_device * dev, comedi_subdevice * s)
+{
+
+ uint8_t ppl[16];
+ comedi_cmd *cmd = &s->async->cmd;
+ enc_private *k;
+ int tick;
+
+ DEBUG("s626_ai_cmd: entering command function\n");
+
+ if (devpriv->ai_cmd_running) {
+ printk("s626_ai_cmd: Another ai_cmd is running %d\n",
+ dev->minor);
+ return -EBUSY;
+ }
+ //disable interrupt
+ writel(0, devpriv->base_addr + P_IER);
+
+ //clear interrupt request
+ writel(IRQ_RPS1 | IRQ_GPIO3, devpriv->base_addr + P_ISR);
+
+ //clear any pending interrupt
+ s626_dio_clear_irq(dev);
+ // s626_enc_clear_irq(dev);
+
+ //reset ai_cmd_running flag
+ devpriv->ai_cmd_running = 0;
+
+ // test if cmd is valid
+ if (cmd == NULL) {
+ DEBUG("s626_ai_cmd: NULL command\n");
+ return -EINVAL;
+ } else {
+ DEBUG("s626_ai_cmd: command recieved!!!\n");
+ }
+
+ if (dev->irq == 0) {
+ comedi_error(dev,
+ "s626_ai_cmd: cannot run command without an irq");
+ return -EIO;
+ }
+
+ s626_ai_load_polllist(ppl, cmd);
+ devpriv->ai_cmd_running = 1;
+ devpriv->ai_convert_count = 0;
+
+ switch (cmd->scan_begin_src) {
+ case TRIG_FOLLOW:
+ break;
+ case TRIG_TIMER:
+ // set a conter to generate adc trigger at scan_begin_arg interval
+ k = &encpriv[5];
+ tick = s626_ns_to_timer((int *)&cmd->scan_begin_arg,
+ cmd->flags & TRIG_ROUND_MASK);
+
+ //load timer value and enable interrupt
+ s626_timer_load(dev, k, tick);
+ k->SetEnable(dev, k, CLKENAB_ALWAYS);
+
+ DEBUG("s626_ai_cmd: scan trigger timer is set with value %d\n",
+ tick);
+
+ break;
+ case TRIG_EXT:
+ // set the digital line and interrupt for scan trigger
+ if (cmd->start_src != TRIG_EXT)
+ s626_dio_set_irq(dev, cmd->scan_begin_arg);
+
+ DEBUG("s626_ai_cmd: External scan trigger is set!!!\n");
+
+ break;
+ }
+
+ switch (cmd->convert_src) {
+ case TRIG_NOW:
+ break;
+ case TRIG_TIMER:
+ // set a conter to generate adc trigger at convert_arg interval
+ k = &encpriv[4];
+ tick = s626_ns_to_timer((int *)&cmd->convert_arg,
+ cmd->flags & TRIG_ROUND_MASK);
+
+ //load timer value and enable interrupt
+ s626_timer_load(dev, k, tick);
+ k->SetEnable(dev, k, CLKENAB_INDEX);
+
+ DEBUG("s626_ai_cmd: convert trigger timer is set with value %d\n", tick);
+ break;
+ case TRIG_EXT:
+ // set the digital line and interrupt for convert trigger
+ if (cmd->scan_begin_src != TRIG_EXT
+ && cmd->start_src == TRIG_EXT)
+ s626_dio_set_irq(dev, cmd->convert_arg);
+
+ DEBUG("s626_ai_cmd: External convert trigger is set!!!\n");
+
+ break;
+ }
+
+ switch (cmd->stop_src) {
+ case TRIG_COUNT:
+ // data arrives as one packet
+ devpriv->ai_sample_count = cmd->stop_arg;
+ devpriv->ai_continous = 0;
+ break;
+ case TRIG_NONE:
+ // continous aquisition
+ devpriv->ai_continous = 1;
+ devpriv->ai_sample_count = 0;
+ break;
+ }
+
+ ResetADC(dev, ppl);
+
+ switch (cmd->start_src) {
+ case TRIG_NOW:
+ // Trigger ADC scan loop start by setting RPS Signal 0.
+ // MC_ENABLE( P_MC2, MC2_ADC_RPS );
+
+ // Start executing the RPS program.
+ MC_ENABLE(P_MC1, MC1_ERPS1);
+
+ DEBUG("s626_ai_cmd: ADC triggered\n");
+ s->async->inttrig = NULL;
+ break;
+ case TRIG_EXT:
+ //configure DIO channel for acquisition trigger
+ s626_dio_set_irq(dev, cmd->start_arg);
+
+ DEBUG("s626_ai_cmd: External start trigger is set!!!\n");
+
+ s->async->inttrig = NULL;
+ break;
+ case TRIG_INT:
+ s->async->inttrig = s626_ai_inttrig;
+ break;
+ }
+
+ //enable interrupt
+ writel(IRQ_GPIO3 | IRQ_RPS1, devpriv->base_addr + P_IER);
+
+ DEBUG("s626_ai_cmd: command function terminated\n");
+
+ return 0;
+}
+
+static int s626_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
+ comedi_cmd * cmd)
+{
+ int err = 0;
+ int tmp;
+
+ /* cmdtest tests a particular command to see if it is valid. Using
+ * the cmdtest ioctl, a user can create a valid cmd and then have it
+ * executes by the cmd ioctl.
+ *
+ * cmdtest returns 1,2,3,4 or 0, depending on which tests the
+ * command passes. */
+
+ /* step 1: make sure trigger sources are trivially valid */
+
+ tmp = cmd->start_src;
+ cmd->start_src &= TRIG_NOW | TRIG_INT | TRIG_EXT;
+ if (!cmd->start_src || tmp != cmd->start_src)
+ err++;
+
+ tmp = cmd->scan_begin_src;
+ cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT | TRIG_FOLLOW;
+ if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
+ err++;
+
+ tmp = cmd->convert_src;
+ cmd->convert_src &= TRIG_TIMER | TRIG_EXT | TRIG_NOW;
+ if (!cmd->convert_src || tmp != cmd->convert_src)
+ err++;
+
+ tmp = cmd->scan_end_src;
+ cmd->scan_end_src &= TRIG_COUNT;
+ if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
+ err++;
+
+ tmp = cmd->stop_src;
+ cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
+ if (!cmd->stop_src || tmp != cmd->stop_src)
+ err++;
+
+ if (err)
+ return 1;
+
+ /* step 2: make sure trigger sources are unique and mutually
+ compatible */
+
+ /* note that mutual compatiblity is not an issue here */
+ if (cmd->scan_begin_src != TRIG_TIMER &&
+ cmd->scan_begin_src != TRIG_EXT
+ && cmd->scan_begin_src != TRIG_FOLLOW)
+ err++;
+ if (cmd->convert_src != TRIG_TIMER &&
+ cmd->convert_src != TRIG_EXT && cmd->convert_src != TRIG_NOW)
+ err++;
+ if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
+ err++;
+
+ if (err)
+ return 2;
+
+ /* step 3: make sure arguments are trivially compatible */
+
+ if (cmd->start_src != TRIG_EXT && cmd->start_arg != 0) {
+ cmd->start_arg = 0;
+ err++;
+ }
+
+ if (cmd->start_src == TRIG_EXT && cmd->start_arg < 0) {
+ cmd->start_arg = 0;
+ err++;
+ }
+
+ if (cmd->start_src == TRIG_EXT && cmd->start_arg > 39) {
+ cmd->start_arg = 39;
+ err++;
+ }
+
+ if (cmd->scan_begin_src == TRIG_EXT && cmd->scan_begin_arg < 0) {
+ cmd->scan_begin_arg = 0;
+ err++;
+ }
+
+ if (cmd->scan_begin_src == TRIG_EXT && cmd->scan_begin_arg > 39) {
+ cmd->scan_begin_arg = 39;
+ err++;
+ }
+
+ if (cmd->convert_src == TRIG_EXT && cmd->convert_arg < 0) {
+ cmd->convert_arg = 0;
+ err++;
+ }
+
+ if (cmd->convert_src == TRIG_EXT && cmd->convert_arg > 39) {
+ cmd->convert_arg = 39;
+ err++;
+ }
+#define MAX_SPEED 200000 /* in nanoseconds */
+#define MIN_SPEED 2000000000 /* in nanoseconds */
+
+ if (cmd->scan_begin_src == TRIG_TIMER) {
+ if (cmd->scan_begin_arg < MAX_SPEED) {
+ cmd->scan_begin_arg = MAX_SPEED;
+ err++;
+ }
+ if (cmd->scan_begin_arg > MIN_SPEED) {
+ cmd->scan_begin_arg = MIN_SPEED;
+ err++;
+ }
+ } else {
+ /* external trigger */
+ /* should be level/edge, hi/lo specification here */
+ /* should specify multiple external triggers */
+/* if(cmd->scan_begin_arg>9){ */
+/* cmd->scan_begin_arg=9; */
+/* err++; */
+/* } */
+ }
+ if (cmd->convert_src == TRIG_TIMER) {
+ if (cmd->convert_arg < MAX_SPEED) {
+ cmd->convert_arg = MAX_SPEED;
+ err++;
+ }
+ if (cmd->convert_arg > MIN_SPEED) {
+ cmd->convert_arg = MIN_SPEED;
+ err++;
+ }
+ } else {
+ /* external trigger */
+ /* see above */
+/* if(cmd->convert_arg>9){ */
+/* cmd->convert_arg=9; */
+/* err++; */
+/* } */
+ }
+
+ if (cmd->scan_end_arg != cmd->chanlist_len) {
+ cmd->scan_end_arg = cmd->chanlist_len;
+ err++;
+ }
+ if (cmd->stop_src == TRIG_COUNT) {
+ if (cmd->stop_arg > 0x00ffffff) {
+ cmd->stop_arg = 0x00ffffff;
+ err++;
+ }
+ } else {
+ /* TRIG_NONE */
+ if (cmd->stop_arg != 0) {
+ cmd->stop_arg = 0;
+ err++;
+ }
+ }
+
+ if (err)
+ return 3;
+
+ /* step 4: fix up any arguments */
+
+ if (cmd->scan_begin_src == TRIG_TIMER) {
+ tmp = cmd->scan_begin_arg;
+ s626_ns_to_timer((int *)&cmd->scan_begin_arg,
+ cmd->flags & TRIG_ROUND_MASK);
+ if (tmp != cmd->scan_begin_arg)
+ err++;
+ }
+ if (cmd->convert_src == TRIG_TIMER) {
+ tmp = cmd->convert_arg;
+ s626_ns_to_timer((int *)&cmd->convert_arg,
+ cmd->flags & TRIG_ROUND_MASK);
+ if (tmp != cmd->convert_arg)
+ err++;
+ if (cmd->scan_begin_src == TRIG_TIMER &&
+ cmd->scan_begin_arg <
+ cmd->convert_arg * cmd->scan_end_arg) {
+ cmd->scan_begin_arg =
+ cmd->convert_arg * cmd->scan_end_arg;
+ err++;
+ }
+ }
+
+ if (err)
+ return 4;
+
+ return 0;
+}
+
+static int s626_ai_cancel(comedi_device * dev, comedi_subdevice * s)
+{
+ // Stop RPS program in case it is currently running.
+ MC_DISABLE(P_MC1, MC1_ERPS1);
+
+ //disable master interrupt
+ writel(0, devpriv->base_addr + P_IER);
+
+ devpriv->ai_cmd_running = 0;
+
+ return 0;
+}
+
+/* This function doesn't require a particular form, this is just what
+ * happens to be used in some of the drivers. It should convert ns
+ * nanoseconds to a counter value suitable for programming the device.
+ * Also, it should adjust ns so that it cooresponds to the actual time
+ * that the device will use. */
+static int s626_ns_to_timer(int *nanosec, int round_mode)
+{
+ int divider, base;
+
+ base = 500; //2MHz internal clock
+
+ switch (round_mode) {
+ case TRIG_ROUND_NEAREST:
+ default:
+ divider = (*nanosec + base / 2) / base;
+ break;
+ case TRIG_ROUND_DOWN:
+ divider = (*nanosec) / base;
+ break;
+ case TRIG_ROUND_UP:
+ divider = (*nanosec + base - 1) / base;
+ break;
+ }
+
+ *nanosec = base * divider;
+ return divider - 1;
+}
+
+static int s626_ao_winsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+
+ int i;
+ uint16_t chan = CR_CHAN(insn->chanspec);
+ int16_t dacdata;
+
+ for (i = 0; i < insn->n; i++) {
+ dacdata = (int16_t) data[i];
+ devpriv->ao_readback[CR_CHAN(insn->chanspec)] = data[i];
+ dacdata -= (0x1fff);
+
+ SetDAC(dev, chan, dacdata);
+ }
+
+ return i;
+}
+
+static int s626_ao_rinsn(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int i;
+
+ for (i = 0; i < insn->n; i++) {
+ data[i] = devpriv->ao_readback[CR_CHAN(insn->chanspec)];
+ }
+
+ return i;
+}
+
+/////////////////////////////////////////////////////////////////////
+/////////////// DIGITAL I/O FUNCTIONS /////////////////////////////
+/////////////////////////////////////////////////////////////////////
+// All DIO functions address a group of DIO channels by means of
+// "group" argument. group may be 0, 1 or 2, which correspond to DIO
+// ports A, B and C, respectively.
+/////////////////////////////////////////////////////////////////////
+
+static void s626_dio_init(comedi_device * dev)
+{
+ uint16_t group;
+ comedi_subdevice *s;
+
+ // Prepare to treat writes to WRCapSel as capture disables.
+ DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP);
+
+ // For each group of sixteen channels ...
+ for (group = 0; group < S626_DIO_BANKS; group++) {
+ s = dev->subdevices + 2 + group;
+ DEBIwrite(dev, diopriv->WRIntSel, 0); // Disable all interrupts.
+ DEBIwrite(dev, diopriv->WRCapSel, 0xFFFF); // Disable all event
+ // captures.
+ DEBIwrite(dev, diopriv->WREdgSel, 0); // Init all DIOs to
+ // default edge
+ // polarity.
+ DEBIwrite(dev, diopriv->WRDOut, 0); // Program all outputs
+ // to inactive state.
+ }
+ DEBUG("s626_dio_init: DIO initialized \n");
+}
+
+/* DIO devices are slightly special. Although it is possible to
+ * implement the insn_read/insn_write interface, it is much more
+ * useful to applications if you implement the insn_bits interface.
+ * This allows packed reading/writing of the DIO channels. The comedi
+ * core can convert between insn_bits and insn_read/write */
+
+static int s626_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+
+ /* Length of data must be 2 (mask and new data, see below) */
+ if (insn->n == 0) {
+ return 0;
+ }
+ if (insn->n != 2) {
+ printk("comedi%d: s626: s626_dio_insn_bits(): Invalid instruction length\n", dev->minor);
+ return -EINVAL;
+ }
+
+ /*
+ * The insn data consists of a mask in data[0] and the new data in
+ * data[1]. The mask defines which bits we are concerning about.
+ * The new data must be anded with the mask. Each channel
+ * corresponds to a bit.
+ */
+ if (data[0]) {
+ /* Check if requested ports are configured for output */
+ if ((s->io_bits & data[0]) != data[0])
+ return -EIO;
+
+ s->state &= ~data[0];
+ s->state |= data[0] & data[1];
+
+ /* Write out the new digital output lines */
+
+ DEBIwrite(dev, diopriv->WRDOut, s->state);
+ }
+ data[1] = DEBIread(dev, diopriv->RDDIn);
+
+ return 2;
+}
+
+static int s626_dio_insn_config(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+
+ switch (data[0]) {
+ case INSN_CONFIG_DIO_QUERY:
+ data[1] =
+ (s->io_bits & (1 << CR_CHAN(insn->
+ chanspec))) ? COMEDI_OUTPUT :
+ COMEDI_INPUT;
+ return insn->n;
+ break;
+ case COMEDI_INPUT:
+ s->io_bits &= ~(1 << CR_CHAN(insn->chanspec));
+ break;
+ case COMEDI_OUTPUT:
+ s->io_bits |= 1 << CR_CHAN(insn->chanspec);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ DEBIwrite(dev, diopriv->WRDOut, s->io_bits);
+
+ return 1;
+}
+
+static int s626_dio_set_irq(comedi_device * dev, unsigned int chan)
+{
+ unsigned int group;
+ unsigned int bitmask;
+ unsigned int status;
+
+ //select dio bank
+ group = chan / 16;
+ bitmask = 1 << (chan - (16 * group));
+ DEBUG("s626_dio_set_irq: enable interrupt on dio channel %d group %d\n",
+ chan - (16 * group), group);
+
+ //set channel to capture positive edge
+ status = DEBIread(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->RDEdgSel);
+ DEBIwrite(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->WREdgSel, bitmask | status);
+
+ //enable interrupt on selected channel
+ status = DEBIread(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->RDIntSel);
+ DEBIwrite(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->WRIntSel, bitmask | status);
+
+ //enable edge capture write command
+ DEBIwrite(dev, LP_MISC1, MISC1_EDCAP);
+
+ //enable edge capture on selected channel
+ status = DEBIread(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->RDCapSel);
+ DEBIwrite(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->WRCapSel, bitmask | status);
+
+ return 0;
+}
+
+static int s626_dio_reset_irq(comedi_device * dev, unsigned int group,
+ unsigned int mask)
+{
+ DEBUG("s626_dio_reset_irq: disable interrupt on dio channel %d group %d\n", mask, group);
+
+ //disable edge capture write command
+ DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP);
+
+ //enable edge capture on selected channel
+ DEBIwrite(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->WRCapSel, mask);
+
+ return 0;
+}
+
+static int s626_dio_clear_irq(comedi_device * dev)
+{
+ unsigned int group;
+
+ //disable edge capture write command
+ DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP);
+
+ for (group = 0; group < S626_DIO_BANKS; group++) {
+ //clear pending events and interrupt
+ DEBIwrite(dev,
+ ((dio_private *) (dev->subdevices + 2 +
+ group)->private)->WRCapSel, 0xffff);
+ }
+
+ return 0;
+}
+
+/* Now this function initializes the value of the counter (data[0])
+ and set the subdevice. To complete with trigger and interrupt
+ configuration */
+static int s626_enc_insn_config(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ uint16_t Setup = (LOADSRC_INDX << BF_LOADSRC) | // Preload upon
+ // index.
+ (INDXSRC_SOFT << BF_INDXSRC) | // Disable hardware index.
+ (CLKSRC_COUNTER << BF_CLKSRC) | // Operating mode is Counter.
+ (CLKPOL_POS << BF_CLKPOL) | // Active high clock.
+ //( CNTDIR_UP << BF_CLKPOL ) | // Count direction is Down.
+ (CLKMULT_1X << BF_CLKMULT) | // Clock multiplier is 1x.
+ (CLKENAB_INDEX << BF_CLKENAB);
+ /* uint16_t DisableIntSrc=TRUE; */
+ // uint32_t Preloadvalue; //Counter initial value
+ uint16_t valueSrclatch = LATCHSRC_AB_READ;
+ uint16_t enab = CLKENAB_ALWAYS;
+ enc_private *k = &encpriv[CR_CHAN(insn->chanspec)];
+
+ DEBUG("s626_enc_insn_config: encoder config\n");
+
+ // (data==NULL) ? (Preloadvalue=0) : (Preloadvalue=data[0]);
+
+ k->SetMode(dev, k, Setup, TRUE);
+ Preload(dev, k, *(insn->data));
+ k->PulseIndex(dev, k);
+ SetLatchSource(dev, k, valueSrclatch);
+ k->SetEnable(dev, k, (uint16_t) (enab != 0));
+
+ return insn->n;
+}
+
+static int s626_enc_insn_read(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+
+ int n;
+ enc_private *k = &encpriv[CR_CHAN(insn->chanspec)];
+
+ DEBUG("s626_enc_insn_read: encoder read channel %d \n",
+ CR_CHAN(insn->chanspec));
+
+ for (n = 0; n < insn->n; n++)
+ data[n] = ReadLatch(dev, k);
+
+ DEBUG("s626_enc_insn_read: encoder sample %d\n", data[n]);
+
+ return n;
+}
+
+static int s626_enc_insn_write(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+
+ enc_private *k = &encpriv[CR_CHAN(insn->chanspec)];
+
+ DEBUG("s626_enc_insn_write: encoder write channel %d \n",
+ CR_CHAN(insn->chanspec));
+
+ // Set the preload register
+ Preload(dev, k, data[0]);
+
+ // Software index pulse forces the preload register to load
+ // into the counter
+ k->SetLoadTrig(dev, k, 0);
+ k->PulseIndex(dev, k);
+ k->SetLoadTrig(dev, k, 2);
+
+ DEBUG("s626_enc_insn_write: End encoder write\n");
+
+ return 1;
+}
+
+static void s626_timer_load(comedi_device * dev, enc_private * k, int tick)
+{
+ uint16_t Setup = (LOADSRC_INDX << BF_LOADSRC) | // Preload upon
+ // index.
+ (INDXSRC_SOFT << BF_INDXSRC) | // Disable hardware index.
+ (CLKSRC_TIMER << BF_CLKSRC) | // Operating mode is Timer.
+ (CLKPOL_POS << BF_CLKPOL) | // Active high clock.
+ (CNTDIR_DOWN << BF_CLKPOL) | // Count direction is Down.
+ (CLKMULT_1X << BF_CLKMULT) | // Clock multiplier is 1x.
+ (CLKENAB_INDEX << BF_CLKENAB);
+ uint16_t valueSrclatch = LATCHSRC_A_INDXA;
+ // uint16_t enab=CLKENAB_ALWAYS;
+
+ k->SetMode(dev, k, Setup, FALSE);
+
+ // Set the preload register
+ Preload(dev, k, tick);
+
+ // Software index pulse forces the preload register to load
+ // into the counter
+ k->SetLoadTrig(dev, k, 0);
+ k->PulseIndex(dev, k);
+
+ //set reload on counter overflow
+ k->SetLoadTrig(dev, k, 1);
+
+ //set interrupt on overflow
+ k->SetIntSrc(dev, k, INTSRC_OVER);
+
+ SetLatchSource(dev, k, valueSrclatch);
+ // k->SetEnable(dev,k,(uint16_t)(enab != 0));
+}
+
+///////////////////////////////////////////////////////////////////////
+///////////////////// DAC FUNCTIONS /////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+// Slot 0 base settings.
+#define VECT0 ( XSD2 | RSD3 | SIB_A2 ) // Slot 0 always shifts in
+ // 0xFF and store it to
+ // FB_BUFFER2.
+
+// TrimDac LogicalChan-to-PhysicalChan mapping table.
+static uint8_t trimchan[] = { 10, 9, 8, 3, 2, 7, 6, 1, 0, 5, 4 };
+
+// TrimDac LogicalChan-to-EepromAdrs mapping table.
+static uint8_t trimadrs[] =
+ { 0x40, 0x41, 0x42, 0x50, 0x51, 0x52, 0x53, 0x60, 0x61, 0x62, 0x63 };
+
+static void LoadTrimDACs(comedi_device * dev)
+{
+ register uint8_t i;
+
+ // Copy TrimDac setpoint values from EEPROM to TrimDacs.
+ for (i = 0; i < (sizeof(trimchan) / sizeof(trimchan[0])); i++)
+ WriteTrimDAC(dev, i, I2Cread(dev, trimadrs[i]));
+}
+
+static void WriteTrimDAC(comedi_device * dev, uint8_t LogicalChan,
+ uint8_t DacData)
+{
+ uint32_t chan;
+
+ // Save the new setpoint in case the application needs to read it back later.
+ devpriv->TrimSetpoint[LogicalChan] = (uint8_t) DacData;
+
+ // Map logical channel number to physical channel number.
+ chan = (uint32_t) trimchan[LogicalChan];
+
+ // Set up TSL2 records for TrimDac write operation. All slots shift
+ // 0xFF in from pulled-up SD3 so that the end of the slot sequence
+ // can be detected.
+ SETVECT(2, XSD2 | XFIFO_1 | WS3); // Slot 2: Send high uint8_t
+ // to target TrimDac.
+ SETVECT(3, XSD2 | XFIFO_0 | WS3); // Slot 3: Send low uint8_t to
+ // target TrimDac.
+ SETVECT(4, XSD2 | XFIFO_3 | WS1); // Slot 4: Send NOP high
+ // uint8_t to DAC0 to keep
+ // clock running.
+ SETVECT(5, XSD2 | XFIFO_2 | WS1 | EOS); // Slot 5: Send NOP low
+ // uint8_t to DAC0.
+
+ // Construct and transmit target DAC's serial packet: ( 0000 AAAA
+ // ),( DDDD DDDD ),( 0x00 ),( 0x00 ) where A<3:0> is the DAC
+ // channel's address, and D<7:0> is the DAC setpoint. Append a WORD
+ // value (that writes a channel 0 NOP command to a non-existent main
+ // DAC channel) that serves to keep the clock running after the
+ // packet has been sent to the target DAC.
+
+ SendDAC(dev, ((uint32_t) chan << 8) // Address the DAC channel
+ // within the trimdac device.
+ | (uint32_t) DacData); // Include DAC setpoint data.
+}
+
+/////////////////////////////////////////////////////////////////////////
+//////////////// EEPROM ACCESS FUNCTIONS //////////////////////////////
+/////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////
+// Read uint8_t from EEPROM.
+
+static uint8_t I2Cread(comedi_device * dev, uint8_t addr)
+{
+ uint8_t rtnval;
+
+ // Send EEPROM target address.
+ if (I2Chandshake(dev, I2C_B2(I2C_ATTRSTART, I2CW) // Byte2 = I2C
+ // command:
+ // write to
+ // I2C EEPROM
+ // device.
+ | I2C_B1(I2C_ATTRSTOP, addr) // Byte1 = EEPROM
+ // internal target
+ // address.
+ | I2C_B0(I2C_ATTRNOP, 0))) // Byte0 = Not
+ // sent.
+ {
+ // Abort function and declare error if handshake failed.
+ DEBUG("I2Cread: error handshake I2Cread a\n");
+ return 0;
+ }
+ // Execute EEPROM read.
+ if (I2Chandshake(dev, I2C_B2(I2C_ATTRSTART, I2CR) // Byte2 = I2C
+ // command: read
+ // from I2C EEPROM
+ // device.
+ | I2C_B1(I2C_ATTRSTOP, 0) // Byte1 receives
+ // uint8_t from
+ // EEPROM.
+ | I2C_B0(I2C_ATTRNOP, 0))) // Byte0 = Not
+ // sent.
+ {
+ // Abort function and declare error if handshake failed.
+ DEBUG("I2Cread: error handshake I2Cread b\n");
+ return 0;
+ }
+ // Return copy of EEPROM value.
+ rtnval = (uint8_t) (RR7146(P_I2CCTRL) >> 16);
+ return rtnval;
+}
+
+static uint32_t I2Chandshake(comedi_device * dev, uint32_t val)
+{
+ // Write I2C command to I2C Transfer Control shadow register.
+ WR7146(P_I2CCTRL, val);
+
+ // Upload I2C shadow registers into working registers and wait for
+ // upload confirmation.
+
+ MC_ENABLE(P_MC2, MC2_UPLD_IIC);
+ while (!MC_TEST(P_MC2, MC2_UPLD_IIC)) ;
+
+ // Wait until I2C bus transfer is finished or an error occurs.
+ while ((RR7146(P_I2CCTRL) & (I2C_BUSY | I2C_ERR)) == I2C_BUSY) ;
+
+ // Return non-zero if I2C error occured.
+ return RR7146(P_I2CCTRL) & I2C_ERR;
+
+}
+
+// Private helper function: Write setpoint to an application DAC channel.
+
+static void SetDAC(comedi_device * dev, uint16_t chan, short dacdata)
+{
+ register uint16_t signmask;
+ register uint32_t WSImage;
+
+ // Adjust DAC data polarity and set up Polarity Control Register
+ // image.
+ signmask = 1 << chan;
+ if (dacdata < 0) {
+ dacdata = -dacdata;
+ devpriv->Dacpol |= signmask;
+ } else
+ devpriv->Dacpol &= ~signmask;
+
+ // Limit DAC setpoint value to valid range.
+ if ((uint16_t) dacdata > 0x1FFF)
+ dacdata = 0x1FFF;
+
+ // Set up TSL2 records (aka "vectors") for DAC update. Vectors V2
+ // and V3 transmit the setpoint to the target DAC. V4 and V5 send
+ // data to a non-existent TrimDac channel just to keep the clock
+ // running after sending data to the target DAC. This is necessary
+ // to eliminate the clock glitch that would otherwise occur at the
+ // end of the target DAC's serial data stream. When the sequence
+ // restarts at V0 (after executing V5), the gate array automatically
+ // disables gating for the DAC clock and all DAC chip selects.
+ WSImage = (chan & 2) ? WS1 : WS2; // Choose DAC chip select to
+ // be asserted.
+ SETVECT(2, XSD2 | XFIFO_1 | WSImage); // Slot 2: Transmit high
+ // data byte to target DAC.
+ SETVECT(3, XSD2 | XFIFO_0 | WSImage); // Slot 3: Transmit low data
+ // byte to target DAC.
+ SETVECT(4, XSD2 | XFIFO_3 | WS3); // Slot 4: Transmit to
+ // non-existent TrimDac
+ // channel to keep clock
+ SETVECT(5, XSD2 | XFIFO_2 | WS3 | EOS); // Slot 5: running after
+ // writing target DAC's
+ // low data byte.
+
+ // Construct and transmit target DAC's serial packet: ( A10D DDDD
+ // ),( DDDD DDDD ),( 0x0F ),( 0x00 ) where A is chan<0>, and D<12:0>
+ // is the DAC setpoint. Append a WORD value (that writes to a
+ // non-existent TrimDac channel) that serves to keep the clock
+ // running after the packet has been sent to the target DAC.
+ SendDAC(dev, 0x0F000000 //Continue clock after target DAC
+ //data (write to non-existent
+ //trimdac).
+ | 0x00004000 // Address the two main dual-DAC
+ // devices (TSL's chip select enables
+ // target device).
+ | ((uint32_t) (chan & 1) << 15) // Address the DAC
+ // channel within the
+ // device.
+ | (uint32_t) dacdata); // Include DAC setpoint data.
+
+}
+
+////////////////////////////////////////////////////////
+// Private helper function: Transmit serial data to DAC via Audio
+// channel 2. Assumes: (1) TSL2 slot records initialized, and (2)
+// Dacpol contains valid target image.
+
+static void SendDAC(comedi_device * dev, uint32_t val)
+{
+
+ // START THE SERIAL CLOCK RUNNING -------------
+
+ // Assert DAC polarity control and enable gating of DAC serial clock
+ // and audio bit stream signals. At this point in time we must be
+ // assured of being in time slot 0. If we are not in slot 0, the
+ // serial clock and audio stream signals will be disabled; this is
+ // because the following DEBIwrite statement (which enables signals
+ // to be passed through the gate array) would execute before the
+ // trailing edge of WS1/WS3 (which turns off the signals), thus
+ // causing the signals to be inactive during the DAC write.
+ DEBIwrite(dev, LP_DACPOL, devpriv->Dacpol);
+
+ // TRANSFER OUTPUT DWORD VALUE INTO A2'S OUTPUT FIFO ----------------
+
+ // Copy DAC setpoint value to DAC's output DMA buffer.
+
+ //WR7146( (uint32_t)devpriv->pDacWBuf, val );
+ *devpriv->pDacWBuf = val;
+
+ // enab the output DMA transfer. This will cause the DMAC to copy
+ // the DAC's data value to A2's output FIFO. The DMA transfer will
+ // then immediately terminate because the protection address is
+ // reached upon transfer of the first DWORD value.
+ MC_ENABLE(P_MC1, MC1_A2OUT);
+
+ // While the DMA transfer is executing ...
+
+ // Reset Audio2 output FIFO's underflow flag (along with any other
+ // FIFO underflow/overflow flags). When set, this flag will
+ // indicate that we have emerged from slot 0.
+ WR7146(P_ISR, ISR_AFOU);
+
+ // Wait for the DMA transfer to finish so that there will be data
+ // available in the FIFO when time slot 1 tries to transfer a DWORD
+ // from the FIFO to the output buffer register. We test for DMA
+ // Done by polling the DMAC enable flag; this flag is automatically
+ // cleared when the transfer has finished.
+ while ((RR7146(P_MC1) & MC1_A2OUT) != 0) ;
+
+ // START THE OUTPUT STREAM TO THE TARGET DAC --------------------
+
+ // FIFO data is now available, so we enable execution of time slots
+ // 1 and higher by clearing the EOS flag in slot 0. Note that SD3
+ // will be shifted in and stored in FB_BUFFER2 for end-of-slot-list
+ // detection.
+ SETVECT(0, XSD2 | RSD3 | SIB_A2);
+
+ // Wait for slot 1 to execute to ensure that the Packet will be
+ // transmitted. This is detected by polling the Audio2 output FIFO
+ // underflow flag, which will be set when slot 1 execution has
+ // finished transferring the DAC's data DWORD from the output FIFO
+ // to the output buffer register.
+ while ((RR7146(P_SSR) & SSR_AF2_OUT) == 0) ;
+
+ // Set up to trap execution at slot 0 when the TSL sequencer cycles
+ // back to slot 0 after executing the EOS in slot 5. Also,
+ // simultaneously shift out and in the 0x00 that is ALWAYS the value
+ // stored in the last byte to be shifted out of the FIFO's DWORD
+ // buffer register.
+ SETVECT(0, XSD2 | XFIFO_2 | RSD2 | SIB_A2 | EOS);
+
+ // WAIT FOR THE TRANSACTION TO FINISH -----------------------
+
+ // Wait for the TSL to finish executing all time slots before
+ // exiting this function. We must do this so that the next DAC
+ // write doesn't start, thereby enabling clock/chip select signals:
+ // 1. Before the TSL sequence cycles back to slot 0, which disables
+ // the clock/cs signal gating and traps slot // list execution. If
+ // we have not yet finished slot 5 then the clock/cs signals are
+ // still gated and we have // not finished transmitting the stream.
+ // 2. While slots 2-5 are executing due to a late slot 0 trap. In
+ // this case, the slot sequence is currently // repeating, but with
+ // clock/cs signals disabled. We must wait for slot 0 to trap
+ // execution before setting // up the next DAC setpoint DMA transfer
+ // and enabling the clock/cs signals. To detect the end of slot 5,
+ // we test for the FB_BUFFER2 MSB contents to be equal to 0xFF. If
+ // the TSL has not yet finished executing slot 5 ...
+ if ((RR7146(P_FB_BUFFER2) & 0xFF000000) != 0) {
+ // The trap was set on time and we are still executing somewhere
+ // in slots 2-5, so we now wait for slot 0 to execute and trap
+ // TSL execution. This is detected when FB_BUFFER2 MSB changes
+ // from 0xFF to 0x00, which slot 0 causes to happen by shifting
+ // out/in on SD2 the 0x00 that is always referenced by slot 5.
+ while ((RR7146(P_FB_BUFFER2) & 0xFF000000) != 0) ;
+ }
+ // Either (1) we were too late setting the slot 0 trap; the TSL
+ // sequencer restarted slot 0 before we could set the EOS trap flag,
+ // or (2) we were not late and execution is now trapped at slot 0.
+ // In either case, we must now change slot 0 so that it will store
+ // value 0xFF (instead of 0x00) to FB_BUFFER2 next time it executes.
+ // In order to do this, we reprogram slot 0 so that it will shift in
+ // SD3, which is driven only by a pull-up resistor.
+ SETVECT(0, RSD3 | SIB_A2 | EOS);
+
+ // Wait for slot 0 to execute, at which time the TSL is setup for
+ // the next DAC write. This is detected when FB_BUFFER2 MSB changes
+ // from 0x00 to 0xFF.
+ while ((RR7146(P_FB_BUFFER2) & 0xFF000000) == 0) ;
+}
+
+static void WriteMISC2(comedi_device * dev, uint16_t NewImage)
+{
+ DEBIwrite(dev, LP_MISC1, MISC1_WENABLE); // enab writes to
+ // MISC2 register.
+ DEBIwrite(dev, LP_WRMISC2, NewImage); // Write new image to MISC2.
+ DEBIwrite(dev, LP_MISC1, MISC1_WDISABLE); // Disable writes to MISC2.
+}
+
+/////////////////////////////////////////////////////////////////////
+// Initialize the DEBI interface for all transfers.
+
+static uint16_t DEBIread(comedi_device * dev, uint16_t addr)
+{
+ uint16_t retval;
+
+ // Set up DEBI control register value in shadow RAM.
+ WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr);
+
+ // Execute the DEBI transfer.
+ DEBItransfer(dev);
+
+ // Fetch target register value.
+ retval = (uint16_t) RR7146(P_DEBIAD);
+
+ // Return register value.
+ return retval;
+}
+
+// Execute a DEBI transfer. This must be called from within a
+// critical section.
+static void DEBItransfer(comedi_device * dev)
+{
+ // Initiate upload of shadow RAM to DEBI control register.
+ MC_ENABLE(P_MC2, MC2_UPLD_DEBI);
+
+ // Wait for completion of upload from shadow RAM to DEBI control
+ // register.
+ while (!MC_TEST(P_MC2, MC2_UPLD_DEBI)) ;
+
+ // Wait until DEBI transfer is done.
+ while (RR7146(P_PSR) & PSR_DEBI_S) ;
+}
+
+// Write a value to a gate array register.
+static void DEBIwrite(comedi_device * dev, uint16_t addr, uint16_t wdata)
+{
+
+ // Set up DEBI control register value in shadow RAM.
+ WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr);
+ WR7146(P_DEBIAD, wdata);
+
+ // Execute the DEBI transfer.
+ DEBItransfer(dev);
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// Replace the specified bits in a gate array register. Imports: mask
+// specifies bits that are to be preserved, wdata is new value to be
+// or'd with the masked original.
+static void DEBIreplace(comedi_device * dev, uint16_t addr, uint16_t mask,
+ uint16_t wdata)
+{
+
+ // Copy target gate array register into P_DEBIAD register.
+ WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr); // Set up DEBI control
+ // reg value in shadow
+ // RAM.
+ DEBItransfer(dev); // Execute the DEBI
+ // Read transfer.
+
+ // Write back the modified image.
+ WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr); // Set up DEBI control
+ // reg value in shadow
+ // RAM.
+
+ WR7146(P_DEBIAD, wdata | ((uint16_t) RR7146(P_DEBIAD) & mask)); // Modify the register image.
+ DEBItransfer(dev); // Execute the DEBI Write transfer.
+}
+
+static void CloseDMAB(comedi_device * dev, DMABUF * pdma, size_t bsize)
+{
+ void *vbptr;
+ dma_addr_t vpptr;
+
+ DEBUG("CloseDMAB: Entering S626DRV_CloseDMAB():\n");
+ if (pdma == NULL)
+ return;
+ //find the matching allocation from the board struct
+
+ vbptr = pdma->LogicalBase;
+ vpptr = pdma->PhysicalBase;
+ if (vbptr) {
+ pci_free_consistent(devpriv->pdev, bsize, vbptr, vpptr);
+ pdma->LogicalBase = 0;
+ pdma->PhysicalBase = 0;
+
+ DEBUG("CloseDMAB(): Logical=%p, bsize=%d, Physical=0x%x\n",
+ vbptr, bsize, (uint32_t) vpptr);
+ }
+}
+
+////////////////////////////////////////////////////////////////////////
+///////////////// COUNTER FUNCTIONS //////////////////////////////////
+////////////////////////////////////////////////////////////////////////
+// All counter functions address a specific counter by means of the
+// "Counter" argument, which is a logical counter number. The Counter
+// argument may have any of the following legal values: 0=0A, 1=1A,
+// 2=2A, 3=0B, 4=1B, 5=2B.
+////////////////////////////////////////////////////////////////////////
+
+// Forward declarations for functions that are common to both A and B
+// counters:
+
+/////////////////////////////////////////////////////////////////////
+//////////////////// PRIVATE COUNTER FUNCTIONS /////////////////////
+/////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////////
+// Read a counter's output latch.
+
+static uint32_t ReadLatch(comedi_device * dev, enc_private * k)
+{
+ register uint32_t value;
+ //DEBUG FIXME DEBUG("ReadLatch: Read Latch enter\n");
+
+ // Latch counts and fetch LSW of latched counts value.
+ value = (uint32_t) DEBIread(dev, k->MyLatchLsw);
+
+ // Fetch MSW of latched counts and combine with LSW.
+ value |= ((uint32_t) DEBIread(dev, k->MyLatchLsw + 2) << 16);
+
+ // DEBUG FIXME DEBUG("ReadLatch: Read Latch exit\n");
+
+ // Return latched counts.
+ return value;
+}
+
+///////////////////////////////////////////////////////////////////
+// Reset a counter's index and overflow event capture flags.
+
+static void ResetCapFlags_A(comedi_device * dev, enc_private * k)
+{
+ DEBIreplace(dev, k->MyCRB, (uint16_t) (~CRBMSK_INTCTRL),
+ CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A);
+}
+
+static void ResetCapFlags_B(comedi_device * dev, enc_private * k)
+{
+ DEBIreplace(dev, k->MyCRB, (uint16_t) (~CRBMSK_INTCTRL),
+ CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B);
+}
+
+/////////////////////////////////////////////////////////////////////////
+// Return counter setup in a format (COUNTER_SETUP) that is consistent
+// for both A and B counters.
+
+static uint16_t GetMode_A(comedi_device * dev, enc_private * k)
+{
+ register uint16_t cra;
+ register uint16_t crb;
+ register uint16_t setup;
+
+ // Fetch CRA and CRB register images.
+ cra = DEBIread(dev, k->MyCRA);
+ crb = DEBIread(dev, k->MyCRB);
+
+ // Populate the standardized counter setup bit fields. Note:
+ // IndexSrc is restricted to ENC_X or IndxPol.
+ setup = ((cra & STDMSK_LOADSRC) // LoadSrc = LoadSrcA.
+ | ((crb << (STDBIT_LATCHSRC - CRBBIT_LATCHSRC)) & STDMSK_LATCHSRC) // LatchSrc = LatchSrcA.
+ | ((cra << (STDBIT_INTSRC - CRABIT_INTSRC_A)) & STDMSK_INTSRC) // IntSrc = IntSrcA.
+ | ((cra << (STDBIT_INDXSRC - (CRABIT_INDXSRC_A + 1))) & STDMSK_INDXSRC) // IndxSrc = IndxSrcA<1>.
+ | ((cra >> (CRABIT_INDXPOL_A - STDBIT_INDXPOL)) & STDMSK_INDXPOL) // IndxPol = IndxPolA.
+ | ((crb >> (CRBBIT_CLKENAB_A - STDBIT_CLKENAB)) & STDMSK_CLKENAB)); // ClkEnab = ClkEnabA.
+
+ // Adjust mode-dependent parameters.
+ if (cra & (2 << CRABIT_CLKSRC_A)) // If Timer mode (ClkSrcA<1> == 1):
+ setup |= ((CLKSRC_TIMER << STDBIT_CLKSRC) // Indicate Timer mode.
+ | ((cra << (STDBIT_CLKPOL - CRABIT_CLKSRC_A)) & STDMSK_CLKPOL) // Set ClkPol to indicate count direction (ClkSrcA<0>).
+ | (MULT_X1 << STDBIT_CLKMULT)); // ClkMult must be 1x in Timer mode.
+
+ else // If Counter mode (ClkSrcA<1> == 0):
+ setup |= ((CLKSRC_COUNTER << STDBIT_CLKSRC) // Indicate Counter mode.
+ | ((cra >> (CRABIT_CLKPOL_A - STDBIT_CLKPOL)) & STDMSK_CLKPOL) // Pass through ClkPol.
+ | (((cra & CRAMSK_CLKMULT_A) == (MULT_X0 << CRABIT_CLKMULT_A)) ? // Force ClkMult to 1x if not legal, else pass through.
+ (MULT_X1 << STDBIT_CLKMULT) :
+ ((cra >> (CRABIT_CLKMULT_A -
+ STDBIT_CLKMULT)) &
+ STDMSK_CLKMULT)));
+
+ // Return adjusted counter setup.
+ return setup;
+}
+
+static uint16_t GetMode_B(comedi_device * dev, enc_private * k)
+{
+ register uint16_t cra;
+ register uint16_t crb;
+ register uint16_t setup;
+
+ // Fetch CRA and CRB register images.
+ cra = DEBIread(dev, k->MyCRA);
+ crb = DEBIread(dev, k->MyCRB);
+
+ // Populate the standardized counter setup bit fields. Note:
+ // IndexSrc is restricted to ENC_X or IndxPol.
+ setup = (((crb << (STDBIT_INTSRC - CRBBIT_INTSRC_B)) & STDMSK_INTSRC) // IntSrc = IntSrcB.
+ | ((crb << (STDBIT_LATCHSRC - CRBBIT_LATCHSRC)) & STDMSK_LATCHSRC) // LatchSrc = LatchSrcB.
+ | ((crb << (STDBIT_LOADSRC - CRBBIT_LOADSRC_B)) & STDMSK_LOADSRC) // LoadSrc = LoadSrcB.
+ | ((crb << (STDBIT_INDXPOL - CRBBIT_INDXPOL_B)) & STDMSK_INDXPOL) // IndxPol = IndxPolB.
+ | ((crb >> (CRBBIT_CLKENAB_B - STDBIT_CLKENAB)) & STDMSK_CLKENAB) // ClkEnab = ClkEnabB.
+ | ((cra >> ((CRABIT_INDXSRC_B + 1) - STDBIT_INDXSRC)) & STDMSK_INDXSRC)); // IndxSrc = IndxSrcB<1>.
+
+ // Adjust mode-dependent parameters.
+ if ((crb & CRBMSK_CLKMULT_B) == (MULT_X0 << CRBBIT_CLKMULT_B)) // If Extender mode (ClkMultB == MULT_X0):
+ setup |= ((CLKSRC_EXTENDER << STDBIT_CLKSRC) // Indicate Extender mode.
+ | (MULT_X1 << STDBIT_CLKMULT) // Indicate multiplier is 1x.
+ | ((cra >> (CRABIT_CLKSRC_B - STDBIT_CLKPOL)) & STDMSK_CLKPOL)); // Set ClkPol equal to Timer count direction (ClkSrcB<0>).
+
+ else if (cra & (2 << CRABIT_CLKSRC_B)) // If Timer mode (ClkSrcB<1> == 1):
+ setup |= ((CLKSRC_TIMER << STDBIT_CLKSRC) // Indicate Timer mode.
+ | (MULT_X1 << STDBIT_CLKMULT) // Indicate multiplier is 1x.
+ | ((cra >> (CRABIT_CLKSRC_B - STDBIT_CLKPOL)) & STDMSK_CLKPOL)); // Set ClkPol equal to Timer count direction (ClkSrcB<0>).
+
+ else // If Counter mode (ClkSrcB<1> == 0):
+ setup |= ((CLKSRC_COUNTER << STDBIT_CLKSRC) // Indicate Timer mode.
+ | ((crb >> (CRBBIT_CLKMULT_B - STDBIT_CLKMULT)) & STDMSK_CLKMULT) // Clock multiplier is passed through.
+ | ((crb << (STDBIT_CLKPOL - CRBBIT_CLKPOL_B)) & STDMSK_CLKPOL)); // Clock polarity is passed through.
+
+ // Return adjusted counter setup.
+ return setup;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////////
+// Set the operating mode for the specified counter. The setup
+// parameter is treated as a COUNTER_SETUP data type. The following
+// parameters are programmable (all other parms are ignored): ClkMult,
+// ClkPol, ClkEnab, IndexSrc, IndexPol, LoadSrc.
+
+static void SetMode_A(comedi_device * dev, enc_private * k, uint16_t Setup,
+ uint16_t DisableIntSrc)
+{
+ register uint16_t cra;
+ register uint16_t crb;
+ register uint16_t setup = Setup; // Cache the Standard Setup.
+
+ // Initialize CRA and CRB images.
+ cra = ((setup & CRAMSK_LOADSRC_A) // Preload trigger is passed through.
+ | ((setup & STDMSK_INDXSRC) >> (STDBIT_INDXSRC - (CRABIT_INDXSRC_A + 1)))); // IndexSrc is restricted to ENC_X or IndxPol.
+
+ crb = (CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A // Reset any pending CounterA event captures.
+ | ((setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_A - STDBIT_CLKENAB))); // Clock enable is passed through.
+
+ // Force IntSrc to Disabled if DisableIntSrc is asserted.
+ if (!DisableIntSrc)
+ cra |= ((setup & STDMSK_INTSRC) >> (STDBIT_INTSRC -
+ CRABIT_INTSRC_A));
+
+ // Populate all mode-dependent attributes of CRA & CRB images.
+ switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) {
+ case CLKSRC_EXTENDER: // Extender Mode: Force to Timer mode
+ // (Extender valid only for B counters).
+
+ case CLKSRC_TIMER: // Timer Mode:
+ cra |= ((2 << CRABIT_CLKSRC_A) // ClkSrcA<1> selects system clock
+ | ((setup & STDMSK_CLKPOL) >> (STDBIT_CLKPOL - CRABIT_CLKSRC_A)) // with count direction (ClkSrcA<0>) obtained from ClkPol.
+ | (1 << CRABIT_CLKPOL_A) // ClkPolA behaves as always-on clock enable.
+ | (MULT_X1 << CRABIT_CLKMULT_A)); // ClkMult must be 1x.
+ break;
+
+ default: // Counter Mode:
+ cra |= (CLKSRC_COUNTER // Select ENC_C and ENC_D as clock/direction inputs.
+ | ((setup & STDMSK_CLKPOL) << (CRABIT_CLKPOL_A - STDBIT_CLKPOL)) // Clock polarity is passed through.
+ | (((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT)) ? // Force multiplier to x1 if not legal, otherwise pass through.
+ (MULT_X1 << CRABIT_CLKMULT_A) :
+ ((setup & STDMSK_CLKMULT) << (CRABIT_CLKMULT_A -
+ STDBIT_CLKMULT))));
+ }
+
+ // Force positive index polarity if IndxSrc is software-driven only,
+ // otherwise pass it through.
+ if (~setup & STDMSK_INDXSRC)
+ cra |= ((setup & STDMSK_INDXPOL) << (CRABIT_INDXPOL_A -
+ STDBIT_INDXPOL));
+
+ // If IntSrc has been forced to Disabled, update the MISC2 interrupt
+ // enable mask to indicate the counter interrupt is disabled.
+ if (DisableIntSrc)
+ devpriv->CounterIntEnabs &= ~k->MyEventBits[3];
+
+ // While retaining CounterB and LatchSrc configurations, program the
+ // new counter operating mode.
+ DEBIreplace(dev, k->MyCRA, CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B, cra);
+ DEBIreplace(dev, k->MyCRB,
+ (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A)), crb);
+}
+
+static void SetMode_B(comedi_device * dev, enc_private * k, uint16_t Setup,
+ uint16_t DisableIntSrc)
+{
+ register uint16_t cra;
+ register uint16_t crb;
+ register uint16_t setup = Setup; // Cache the Standard Setup.
+
+ // Initialize CRA and CRB images.
+ cra = ((setup & STDMSK_INDXSRC) << ((CRABIT_INDXSRC_B + 1) - STDBIT_INDXSRC)); // IndexSrc field is restricted to ENC_X or IndxPol.
+
+ crb = (CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B // Reset event captures and disable interrupts.
+ | ((setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_B - STDBIT_CLKENAB)) // Clock enable is passed through.
+ | ((setup & STDMSK_LOADSRC) >> (STDBIT_LOADSRC - CRBBIT_LOADSRC_B))); // Preload trigger source is passed through.
+
+ // Force IntSrc to Disabled if DisableIntSrc is asserted.
+ if (!DisableIntSrc)
+ crb |= ((setup & STDMSK_INTSRC) >> (STDBIT_INTSRC -
+ CRBBIT_INTSRC_B));
+
+ // Populate all mode-dependent attributes of CRA & CRB images.
+ switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) {
+ case CLKSRC_TIMER: // Timer Mode:
+ cra |= ((2 << CRABIT_CLKSRC_B) // ClkSrcB<1> selects system clock
+ | ((setup & STDMSK_CLKPOL) << (CRABIT_CLKSRC_B - STDBIT_CLKPOL))); // with direction (ClkSrcB<0>) obtained from ClkPol.
+ crb |= ((1 << CRBBIT_CLKPOL_B) // ClkPolB behaves as always-on clock enable.
+ | (MULT_X1 << CRBBIT_CLKMULT_B)); // ClkMultB must be 1x.
+ break;
+
+ case CLKSRC_EXTENDER: // Extender Mode:
+ cra |= ((2 << CRABIT_CLKSRC_B) // ClkSrcB source is OverflowA (same as "timer")
+ | ((setup & STDMSK_CLKPOL) << (CRABIT_CLKSRC_B - STDBIT_CLKPOL))); // with direction obtained from ClkPol.
+ crb |= ((1 << CRBBIT_CLKPOL_B) // ClkPolB controls IndexB -- always set to active.
+ | (MULT_X0 << CRBBIT_CLKMULT_B)); // ClkMultB selects OverflowA as the clock source.
+ break;
+
+ default: // Counter Mode:
+ cra |= (CLKSRC_COUNTER << CRABIT_CLKSRC_B); // Select ENC_C and ENC_D as clock/direction inputs.
+ crb |= (((setup & STDMSK_CLKPOL) >> (STDBIT_CLKPOL - CRBBIT_CLKPOL_B)) // ClkPol is passed through.
+ | (((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT)) ? // Force ClkMult to x1 if not legal, otherwise pass through.
+ (MULT_X1 << CRBBIT_CLKMULT_B) :
+ ((setup & STDMSK_CLKMULT) << (CRBBIT_CLKMULT_B -
+ STDBIT_CLKMULT))));
+ }
+
+ // Force positive index polarity if IndxSrc is software-driven only,
+ // otherwise pass it through.
+ if (~setup & STDMSK_INDXSRC)
+ crb |= ((setup & STDMSK_INDXPOL) >> (STDBIT_INDXPOL -
+ CRBBIT_INDXPOL_B));
+
+ // If IntSrc has been forced to Disabled, update the MISC2 interrupt
+ // enable mask to indicate the counter interrupt is disabled.
+ if (DisableIntSrc)
+ devpriv->CounterIntEnabs &= ~k->MyEventBits[3];
+
+ // While retaining CounterA and LatchSrc configurations, program the
+ // new counter operating mode.
+ DEBIreplace(dev, k->MyCRA,
+ (uint16_t) (~(CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B)), cra);
+ DEBIreplace(dev, k->MyCRB, CRBMSK_CLKENAB_A | CRBMSK_LATCHSRC, crb);
+}
+
+////////////////////////////////////////////////////////////////////////
+// Return/set a counter's enable. enab: 0=always enabled, 1=enabled by index.
+
+static void SetEnable_A(comedi_device * dev, enc_private * k, uint16_t enab)
+{
+ DEBUG("SetEnable_A: SetEnable_A enter 3541\n");
+ DEBIreplace(dev, k->MyCRB,
+ (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A)),
+ (uint16_t) (enab << CRBBIT_CLKENAB_A));
+}
+
+static void SetEnable_B(comedi_device * dev, enc_private * k, uint16_t enab)
+{
+ DEBIreplace(dev, k->MyCRB,
+ (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_B)),
+ (uint16_t) (enab << CRBBIT_CLKENAB_B));
+}
+
+static uint16_t GetEnable_A(comedi_device * dev, enc_private * k)
+{
+ return (DEBIread(dev, k->MyCRB) >> CRBBIT_CLKENAB_A) & 1;
+}
+
+static uint16_t GetEnable_B(comedi_device * dev, enc_private * k)
+{
+ return (DEBIread(dev, k->MyCRB) >> CRBBIT_CLKENAB_B) & 1;
+}
+
+////////////////////////////////////////////////////////////////////////
+// Return/set a counter pair's latch trigger source. 0: On read
+// access, 1: A index latches A, 2: B index latches B, 3: A overflow
+// latches B.
+
+static void SetLatchSource(comedi_device * dev, enc_private * k, uint16_t value)
+{
+ DEBUG("SetLatchSource: SetLatchSource enter 3550 \n");
+ DEBIreplace(dev, k->MyCRB,
+ (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_LATCHSRC)),
+ (uint16_t) (value << CRBBIT_LATCHSRC));
+
+ DEBUG("SetLatchSource: SetLatchSource exit \n");
+}
+
+/* static uint16_t GetLatchSource(comedi_device *dev, enc_private *k ) */
+/* { */
+/* return ( DEBIread( dev, k->MyCRB) >> CRBBIT_LATCHSRC ) & 3; */
+/* } */
+
+/////////////////////////////////////////////////////////////////////////
+// Return/set the event that will trigger transfer of the preload
+// register into the counter. 0=ThisCntr_Index, 1=ThisCntr_Overflow,
+// 2=OverflowA (B counters only), 3=disabled.
+
+static void SetLoadTrig_A(comedi_device * dev, enc_private * k, uint16_t Trig)
+{
+ DEBIreplace(dev, k->MyCRA, (uint16_t) (~CRAMSK_LOADSRC_A),
+ (uint16_t) (Trig << CRABIT_LOADSRC_A));
+}
+
+static void SetLoadTrig_B(comedi_device * dev, enc_private * k, uint16_t Trig)
+{
+ DEBIreplace(dev, k->MyCRB,
+ (uint16_t) (~(CRBMSK_LOADSRC_B | CRBMSK_INTCTRL)),
+ (uint16_t) (Trig << CRBBIT_LOADSRC_B));
+}
+
+static uint16_t GetLoadTrig_A(comedi_device * dev, enc_private * k)
+{
+ return (DEBIread(dev, k->MyCRA) >> CRABIT_LOADSRC_A) & 3;
+}
+
+static uint16_t GetLoadTrig_B(comedi_device * dev, enc_private * k)
+{
+ return (DEBIread(dev, k->MyCRB) >> CRBBIT_LOADSRC_B) & 3;
+}
+
+////////////////////
+// Return/set counter interrupt source and clear any captured
+// index/overflow events. IntSource: 0=Disabled, 1=OverflowOnly,
+// 2=IndexOnly, 3=IndexAndOverflow.
+
+static void SetIntSrc_A(comedi_device * dev, enc_private * k,
+ uint16_t IntSource)
+{
+ // Reset any pending counter overflow or index captures.
+ DEBIreplace(dev, k->MyCRB, (uint16_t) (~CRBMSK_INTCTRL),
+ CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A);
+
+ // Program counter interrupt source.
+ DEBIreplace(dev, k->MyCRA, ~CRAMSK_INTSRC_A,
+ (uint16_t) (IntSource << CRABIT_INTSRC_A));
+
+ // Update MISC2 interrupt enable mask.
+ devpriv->CounterIntEnabs =
+ (devpriv->CounterIntEnabs & ~k->MyEventBits[3]) | k->
+ MyEventBits[IntSource];
+}
+
+static void SetIntSrc_B(comedi_device * dev, enc_private * k,
+ uint16_t IntSource)
+{
+ uint16_t crb;
+
+ // Cache writeable CRB register image.
+ crb = DEBIread(dev, k->MyCRB) & ~CRBMSK_INTCTRL;
+
+ // Reset any pending counter overflow or index captures.
+ DEBIwrite(dev, k->MyCRB,
+ (uint16_t) (crb | CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B));
+
+ // Program counter interrupt source.
+ DEBIwrite(dev, k->MyCRB,
+ (uint16_t) ((crb & ~CRBMSK_INTSRC_B) | (IntSource <<
+ CRBBIT_INTSRC_B)));
+
+ // Update MISC2 interrupt enable mask.
+ devpriv->CounterIntEnabs =
+ (devpriv->CounterIntEnabs & ~k->MyEventBits[3]) | k->
+ MyEventBits[IntSource];
+}
+
+static uint16_t GetIntSrc_A(comedi_device * dev, enc_private * k)
+{
+ return (DEBIread(dev, k->MyCRA) >> CRABIT_INTSRC_A) & 3;
+}
+
+static uint16_t GetIntSrc_B(comedi_device * dev, enc_private * k)
+{
+ return (DEBIread(dev, k->MyCRB) >> CRBBIT_INTSRC_B) & 3;
+}
+
+/////////////////////////////////////////////////////////////////////////
+// Return/set the clock multiplier.
+
+/* static void SetClkMult(comedi_device *dev, enc_private *k, uint16_t value ) */
+/* { */
+/* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_CLKMULT ) | ( value << STDBIT_CLKMULT ) ), FALSE ); */
+/* } */
+
+/* static uint16_t GetClkMult(comedi_device *dev, enc_private *k ) */
+/* { */
+/* return ( k->GetMode(dev, k ) >> STDBIT_CLKMULT ) & 3; */
+/* } */
+
+/* ////////////////////////////////////////////////////////////////////////// */
+/* // Return/set the clock polarity. */
+
+/* static void SetClkPol( comedi_device *dev,enc_private *k, uint16_t value ) */
+/* { */
+/* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_CLKPOL ) | ( value << STDBIT_CLKPOL ) ), FALSE ); */
+/* } */
+
+/* static uint16_t GetClkPol(comedi_device *dev, enc_private *k ) */
+/* { */
+/* return ( k->GetMode(dev, k ) >> STDBIT_CLKPOL ) & 1; */
+/* } */
+
+/* /////////////////////////////////////////////////////////////////////// */
+/* // Return/set the clock source. */
+
+/* static void SetClkSrc( comedi_device *dev,enc_private *k, uint16_t value ) */
+/* { */
+/* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_CLKSRC ) | ( value << STDBIT_CLKSRC ) ), FALSE ); */
+/* } */
+
+/* static uint16_t GetClkSrc( comedi_device *dev,enc_private *k ) */
+/* { */
+/* return ( k->GetMode(dev, k ) >> STDBIT_CLKSRC ) & 3; */
+/* } */
+
+/* //////////////////////////////////////////////////////////////////////// */
+/* // Return/set the index polarity. */
+
+/* static void SetIndexPol(comedi_device *dev, enc_private *k, uint16_t value ) */
+/* { */
+/* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_INDXPOL ) | ( (value != 0) << STDBIT_INDXPOL ) ), FALSE ); */
+/* } */
+
+/* static uint16_t GetIndexPol(comedi_device *dev, enc_private *k ) */
+/* { */
+/* return ( k->GetMode(dev, k ) >> STDBIT_INDXPOL ) & 1; */
+/* } */
+
+/* //////////////////////////////////////////////////////////////////////// */
+/* // Return/set the index source. */
+
+/* static void SetIndexSrc(comedi_device *dev, enc_private *k, uint16_t value ) */
+/* { */
+/* DEBUG("SetIndexSrc: set index src enter 3700\n"); */
+/* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_INDXSRC ) | ( (value != 0) << STDBIT_INDXSRC ) ), FALSE ); */
+/* } */
+
+/* static uint16_t GetIndexSrc(comedi_device *dev, enc_private *k ) */
+/* { */
+/* return ( k->GetMode(dev, k ) >> STDBIT_INDXSRC ) & 1; */
+/* } */
+
+///////////////////////////////////////////////////////////////////
+// Generate an index pulse.
+
+static void PulseIndex_A(comedi_device * dev, enc_private * k)
+{
+ register uint16_t cra;
+
+ DEBUG("PulseIndex_A: pulse index enter\n");
+
+ cra = DEBIread(dev, k->MyCRA); // Pulse index.
+ DEBIwrite(dev, k->MyCRA, (uint16_t) (cra ^ CRAMSK_INDXPOL_A));
+ DEBUG("PulseIndex_A: pulse index step1\n");
+ DEBIwrite(dev, k->MyCRA, cra);
+}
+
+static void PulseIndex_B(comedi_device * dev, enc_private * k)
+{
+ register uint16_t crb;
+
+ crb = DEBIread(dev, k->MyCRB) & ~CRBMSK_INTCTRL; // Pulse index.
+ DEBIwrite(dev, k->MyCRB, (uint16_t) (crb ^ CRBMSK_INDXPOL_B));
+ DEBIwrite(dev, k->MyCRB, crb);
+}
+
+/////////////////////////////////////////////////////////
+// Write value into counter preload register.
+
+static void Preload(comedi_device * dev, enc_private * k, uint32_t value)
+{
+ DEBUG("Preload: preload enter\n");
+ DEBIwrite(dev, (uint16_t) (k->MyLatchLsw), (uint16_t) value); // Write value to preload register.
+ DEBUG("Preload: preload step 1\n");
+ DEBIwrite(dev, (uint16_t) (k->MyLatchLsw + 2),
+ (uint16_t) (value >> 16));
+}
+
+static void CountersInit(comedi_device * dev)
+{
+ int chan;
+ enc_private *k;
+ uint16_t Setup = (LOADSRC_INDX << BF_LOADSRC) | // Preload upon
+ // index.
+ (INDXSRC_SOFT << BF_INDXSRC) | // Disable hardware index.
+ (CLKSRC_COUNTER << BF_CLKSRC) | // Operating mode is counter.
+ (CLKPOL_POS << BF_CLKPOL) | // Active high clock.
+ (CNTDIR_UP << BF_CLKPOL) | // Count direction is up.
+ (CLKMULT_1X << BF_CLKMULT) | // Clock multiplier is 1x.
+ (CLKENAB_INDEX << BF_CLKENAB); // Enabled by index
+
+ // Disable all counter interrupts and clear any captured counter events.
+ for (chan = 0; chan < S626_ENCODER_CHANNELS; chan++) {
+ k = &encpriv[chan];
+ k->SetMode(dev, k, Setup, TRUE);
+ k->SetIntSrc(dev, k, 0);
+ k->ResetCapFlags(dev, k);
+ k->SetEnable(dev, k, CLKENAB_ALWAYS);
+ }
+ DEBUG("CountersInit: counters initialized \n");
+
+}
--- /dev/null
+/*
+ comedi/drivers/s626.h
+ Sensoray s626 Comedi driver, header file
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+
+ Based on Sensoray Model 626 Linux driver Version 0.2
+ Copyright (C) 2002-2004 Sensoray Co., Inc.
+
+ 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: s626.o (s626.ko)
+ Description: Sensoray 626 driver
+ Devices: Sensoray s626
+ Authors: Gianluca Palli <gpalli@deis.unibo.it>,
+ Updated: Thu, 12 Jul 2005
+ Status: experimental
+
+ Configuration Options:
+ analog input:
+ none
+
+ analog output:
+ none
+
+ digital channel:
+ s626 has 3 dio subdevices (2,3 and 4) each with 16 i/o channels
+ supported configuration options:
+ INSN_CONFIG_DIO_QUERY
+ COMEDI_INPUT
+ COMEDI_OUTPUT
+
+ encoder:
+ Every channel must be configured before reading.
+
+ Example code
+
+ insn.insn=INSN_CONFIG; //configuration instruction
+ insn.n=1; //number of operation (must be 1)
+ insn.data=&initialvalue; //initial value loaded into encoder
+ //during configuration
+ insn.subdev=5; //encoder subdevice
+ insn.chanspec=CR_PACK(encoder_channel,0,AREF_OTHER); //encoder_channel
+ //to configure
+
+ comedi_do_insn(cf,&insn); //executing configuration
+*/
+
+#ifdef _DEBUG_
+#define DEBUG(...); rt_printk(__VA_ARGS__);
+#else
+#define DEBUG(...)
+#endif
+
+#if !defined(TRUE)
+#define TRUE (1)
+#endif
+
+#if !defined(FALSE)
+#define FALSE (0)
+#endif
+
+#if !defined(EXTERN)
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+#else
+#define EXTERN extern
+#endif
+#endif
+
+#if !defined(INLINE)
+#define INLINE static __inline
+#endif
+
+/////////////////////////////////////////////////////
+#include<linux/slab.h>
+
+#define S626_SIZE 0x0200
+#define SIZEOF_ADDRESS_SPACE 0x0200
+#define DMABUF_SIZE 4096 // 4k pages
+
+#define S626_ADC_CHANNELS 16
+#define S626_DAC_CHANNELS 4
+#define S626_ENCODER_CHANNELS 6
+#define S626_DIO_CHANNELS 48
+#define S626_DIO_BANKS 3 // Number of DIO groups.
+#define S626_DIO_EXTCHANS 40 // Number of
+ // extended-capability
+ // DIO channels.
+
+#define NUM_TRIMDACS 12 // Number of valid TrimDAC channels.
+
+// PCI bus interface types.
+#define INTEL 1 // Intel bus type.
+#define MOTOROLA 2 // Motorola bus type.
+
+//////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////
+#define PLATFORM INTEL // *** SELECT PLATFORM TYPE ***
+//////////////////////////////////////////////////////////
+
+#define RANGE_5V 0x10 // +/-5V range
+#define RANGE_10V 0x00 // +/-10V range
+
+#define EOPL 0x80 // End of ADC poll list marker.
+#define GSEL_BIPOLAR5V 0x00F0 // LP_GSEL setting for 5V bipolar range.
+#define GSEL_BIPOLAR10V 0x00A0 // LP_GSEL setting for 10V bipolar range.
+
+// Error codes that must be visible to this base class.
+#define ERR_ILLEGAL_PARM 0x00010000 // Illegal function parameter value was specified.
+#define ERR_I2C 0x00020000 // I2C error.
+#define ERR_COUNTERSETUP 0x00200000 // Illegal setup specified for counter channel.
+#define ERR_DEBI_TIMEOUT 0x00400000 // DEBI transfer timed out.
+
+// Organization (physical order) and size (in DWORDs) of logical DMA buffers contained by ANA_DMABUF.
+#define ADC_DMABUF_DWORDS 40 // ADC DMA buffer must hold 16 samples, plus pre/post garbage samples.
+#define DAC_WDMABUF_DWORDS 1 // DAC output DMA buffer holds a single sample.
+
+// All remaining space in 4KB DMA buffer is available for the RPS1 program.
+
+// Address offsets, in DWORDS, from base of DMA buffer.
+#define DAC_WDMABUF_OS ADC_DMABUF_DWORDS
+
+// Interrupt enab bit in ISR and IER.
+#define IRQ_GPIO3 0x00000040 // IRQ enable for GPIO3.
+#define IRQ_RPS1 0x10000000
+#define ISR_AFOU 0x00000800 // Audio fifo
+ // under/overflow
+ // detected.
+#define IRQ_COINT1A 0x0400 // conter 1A overflow
+ // interrupt mask
+#define IRQ_COINT1B 0x0800 // conter 1B overflow
+ // interrupt mask
+#define IRQ_COINT2A 0x1000 // conter 2A overflow
+ // interrupt mask
+#define IRQ_COINT2B 0x2000 // conter 2B overflow
+ // interrupt mask
+#define IRQ_COINT3A 0x4000 // conter 3A overflow
+ // interrupt mask
+#define IRQ_COINT3B 0x8000 // conter 3B overflow
+ // interrupt mask
+
+// RPS command codes.
+#define RPS_CLRSIGNAL 0x00000000 // CLEAR SIGNAL
+#define RPS_SETSIGNAL 0x10000000 // SET SIGNAL
+#define RPS_NOP 0x00000000 // NOP
+#define RPS_PAUSE 0x20000000 // PAUSE
+#define RPS_UPLOAD 0x40000000 // UPLOAD
+#define RPS_JUMP 0x80000000 // JUMP
+#define RPS_LDREG 0x90000100 // LDREG (1 uint32_t only)
+#define RPS_STREG 0xA0000100 // STREG (1 uint32_t only)
+#define RPS_STOP 0x50000000 // STOP
+#define RPS_IRQ 0x60000000 // IRQ
+
+#define RPS_LOGICAL_OR 0x08000000 // Logical OR conditionals.
+#define RPS_INVERT 0x04000000 // Test for negated semaphores.
+#define RPS_DEBI 0x00000002 // DEBI done
+
+#define RPS_SIG0 0x00200000 // RPS semaphore 0 (used by ADC).
+#define RPS_SIG1 0x00400000 // RPS semaphore 1 (used by DAC).
+#define RPS_SIG2 0x00800000 // RPS semaphore 2 (not used).
+#define RPS_GPIO2 0x00080000 // RPS GPIO2
+#define RPS_GPIO3 0x00100000 // RPS GPIO3
+
+#define RPS_SIGADC RPS_SIG0 // Trigger/status for ADC's RPS program.
+#define RPS_SIGDAC RPS_SIG1 // Trigger/status for DAC's RPS program.
+
+// RPS clock parameters.
+#define RPSCLK_SCALAR 8 // This is apparent ratio of PCI/RPS clks (undocumented!!).
+#define RPSCLK_PER_US ( 33 / RPSCLK_SCALAR ) // Number of RPS clocks in one microsecond.
+
+// Event counter source addresses.
+#define SBA_RPS_A0 0x27 // Time of RPS0 busy, in PCI clocks.
+
+// GPIO constants.
+#define GPIO_BASE 0x10004000 // GPIO 0,2,3 = inputs, GPIO3 = IRQ; GPIO1 = out.
+#define GPIO1_LO 0x00000000 // GPIO1 set to LOW.
+#define GPIO1_HI 0x00001000 // GPIO1 set to HIGH.
+
+// Primary Status Register (PSR) constants.
+#define PSR_DEBI_E 0x00040000 // DEBI event flag.
+#define PSR_DEBI_S 0x00080000 // DEBI status flag.
+#define PSR_A2_IN 0x00008000 // Audio output DMA2 protection address reached.
+#define PSR_AFOU 0x00000800 // Audio FIFO under/overflow detected.
+#define PSR_GPIO2 0x00000020 // GPIO2 input pin: 0=AdcBusy, 1=AdcIdle.
+#define PSR_EC0S 0x00000001 // Event counter 0 threshold reached.
+
+// Secondary Status Register (SSR) constants.
+#define SSR_AF2_OUT 0x00000200 // Audio 2 output FIFO under/overflow detected.
+
+// Master Control Register 1 (MC1) constants.
+#define MC1_SOFT_RESET 0x80000000 // Invoke 7146 soft reset.
+#define MC1_SHUTDOWN 0x3FFF0000 // Shut down all MC1-controlled enables.
+
+#define MC1_ERPS1 0x2000 // enab/disable RPS task 1.
+#define MC1_ERPS0 0x1000 // enab/disable RPS task 0.
+#define MC1_DEBI 0x0800 // enab/disable DEBI pins.
+#define MC1_AUDIO 0x0200 // enab/disable audio port pins.
+#define MC1_I2C 0x0100 // enab/disable I2C interface.
+#define MC1_A2OUT 0x0008 // enab/disable transfer on A2 out.
+#define MC1_A2IN 0x0004 // enab/disable transfer on A2 in.
+#define MC1_A1IN 0x0001 // enab/disable transfer on A1 in.
+
+// Master Control Register 2 (MC2) constants.
+#define MC2_UPLD_DEBIq 0x00020002 // Upload DEBI registers.
+#define MC2_UPLD_IICq 0x00010001 // Upload I2C registers.
+#define MC2_RPSSIG2_ONq 0x20002000 // Assert RPS_SIG2.
+#define MC2_RPSSIG1_ONq 0x10001000 // Assert RPS_SIG1.
+#define MC2_RPSSIG0_ONq 0x08000800 // Assert RPS_SIG0.
+#define MC2_UPLD_DEBI_MASKq 0x00000002 // Upload DEBI mask.
+#define MC2_UPLD_IIC_MASKq 0x00000001 // Upload I2C mask.
+#define MC2_RPSSIG2_MASKq 0x00002000 // RPS_SIG2 bit mask.
+#define MC2_RPSSIG1_MASKq 0x00001000 // RPS_SIG1 bit mask.
+#define MC2_RPSSIG0_MASKq 0x00000800 // RPS_SIG0 bit mask.
+
+#define MC2_DELAYTRIG_4USq MC2_RPSSIG1_ON
+#define MC2_DELAYBUSY_4USq MC2_RPSSIG1_MASK
+
+#define MC2_DELAYTRIG_6USq MC2_RPSSIG2_ON
+#define MC2_DELAYBUSY_6USq MC2_RPSSIG2_MASK
+
+#define MC2_UPLD_DEBI 0x0002 // Upload DEBI.
+#define MC2_UPLD_IIC 0x0001 // Upload I2C.
+#define MC2_RPSSIG2 0x2000 // RPS signal 2 (not used).
+#define MC2_RPSSIG1 0x1000 // RPS signal 1 (DAC RPS busy).
+#define MC2_RPSSIG0 0x0800 // RPS signal 0 (ADC RPS busy).
+
+#define MC2_ADC_RPS MC2_RPSSIG0 // ADC RPS busy.
+#define MC2_DAC_RPS MC2_RPSSIG1 // DAC RPS busy.
+
+///////////////////oldies///////////
+#define MC2_UPLD_DEBIQ 0x00020002 // Upload DEBI registers.
+#define MC2_UPLD_IICQ 0x00010001 // Upload I2C registers.
+////////////////////////////////////////
+
+// PCI BUS (SAA7146) REGISTER ADDRESS OFFSETS ////////////////////////
+#define P_PCI_BT_A 0x004C // Audio DMA
+ // burst/threshold
+ // control.
+#define P_DEBICFG 0x007C // DEBI configuration.
+#define P_DEBICMD 0x0080 // DEBI command.
+#define P_DEBIPAGE 0x0084 // DEBI page.
+#define P_DEBIAD 0x0088 // DEBI target address.
+#define P_I2CCTRL 0x008C // I2C control.
+#define P_I2CSTAT 0x0090 // I2C status.
+#define P_BASEA2_IN 0x00AC // Audio input 2 base
+ // physical DMAbuf
+ // address.
+#define P_PROTA2_IN 0x00B0 // Audio input 2
+ // physical DMAbuf
+ // protection address.
+#define P_PAGEA2_IN 0x00B4 // Audio input 2
+ // paging attributes.
+#define P_BASEA2_OUT 0x00B8 // Audio output 2 base
+ // physical DMAbuf
+ // address.
+#define P_PROTA2_OUT 0x00BC // Audio output 2
+ // physical DMAbuf
+ // protection address.
+#define P_PAGEA2_OUT 0x00C0 // Audio output 2
+ // paging attributes.
+#define P_RPSPAGE0 0x00C4 // RPS0 page.
+#define P_RPSPAGE1 0x00C8 // RPS1 page.
+#define P_RPS0_TOUT 0x00D4 // RPS0 time-out.
+#define P_RPS1_TOUT 0x00D8 // RPS1 time-out.
+#define P_IER 0x00DC // Interrupt enable.
+#define P_GPIO 0x00E0 // General-purpose I/O.
+#define P_EC1SSR 0x00E4 // Event counter set 1
+ // source select.
+#define P_ECT1R 0x00EC // Event counter
+ // threshold set 1.
+#define P_ACON1 0x00F4 // Audio control 1.
+#define P_ACON2 0x00F8 // Audio control 2.
+#define P_MC1 0x00FC // Master control 1.
+#define P_MC2 0x0100 // Master control 2.
+#define P_RPSADDR0 0x0104 // RPS0 instruction pointer.
+#define P_RPSADDR1 0x0108 // RPS1 instruction pointer.
+#define P_ISR 0x010C // Interrupt status.
+#define P_PSR 0x0110 // Primary status.
+#define P_SSR 0x0114 // Secondary status.
+#define P_EC1R 0x0118 // Event counter set 1.
+#define P_ADP4 0x0138 // Logical audio DMA
+ // pointer of audio
+ // input FIFO A2_IN.
+#define P_FB_BUFFER1 0x0144 // Audio feedback buffer 1.
+#define P_FB_BUFFER2 0x0148 // Audio feedback buffer 2.
+#define P_TSL1 0x0180 // Audio time slot list 1.
+#define P_TSL2 0x01C0 // Audio time slot list 2.
+
+// LOCAL BUS (GATE ARRAY) REGISTER ADDRESS OFFSETS /////////////////
+// Analog I/O registers:
+#define LP_DACPOL 0x0082 // Write DAC polarity.
+#define LP_GSEL 0x0084 // Write ADC gain.
+#define LP_ISEL 0x0086 // Write ADC channel select.
+// Digital I/O (write only):
+#define LP_WRINTSELA 0x0042 // Write A interrupt enable.
+#define LP_WREDGSELA 0x0044 // Write A edge selection.
+#define LP_WRCAPSELA 0x0046 // Write A capture enable.
+#define LP_WRDOUTA 0x0048 // Write A digital output.
+#define LP_WRINTSELB 0x0052 // Write B interrupt enable.
+#define LP_WREDGSELB 0x0054 // Write B edge selection.
+#define LP_WRCAPSELB 0x0056 // Write B capture enable.
+#define LP_WRDOUTB 0x0058 // Write B digital output.
+#define LP_WRINTSELC 0x0062 // Write C interrupt enable.
+#define LP_WREDGSELC 0x0064 // Write C edge selection.
+#define LP_WRCAPSELC 0x0066 // Write C capture enable.
+#define LP_WRDOUTC 0x0068 // Write C digital output.
+
+// Digital I/O (read only):
+#define LP_RDDINA 0x0040 // Read digital input.
+#define LP_RDCAPFLGA 0x0048 // Read edges captured.
+#define LP_RDINTSELA 0x004A // Read interrupt
+ // enable register.
+#define LP_RDEDGSELA 0x004C // Read edge
+ // selection
+ // register.
+#define LP_RDCAPSELA 0x004E // Read capture
+ // enable register.
+#define LP_RDDINB 0x0050 // Read digital input.
+#define LP_RDCAPFLGB 0x0058 // Read edges captured.
+#define LP_RDINTSELB 0x005A // Read interrupt
+ // enable register.
+#define LP_RDEDGSELB 0x005C // Read edge
+ // selection
+ // register.
+#define LP_RDCAPSELB 0x005E // Read capture
+ // enable register.
+#define LP_RDDINC 0x0060 // Read digital input.
+#define LP_RDCAPFLGC 0x0068 // Read edges captured.
+#define LP_RDINTSELC 0x006A // Read interrupt
+ // enable register.
+#define LP_RDEDGSELC 0x006C // Read edge
+ // selection
+ // register.
+#define LP_RDCAPSELC 0x006E // Read capture
+ // enable register.
+// Counter Registers (read/write):
+#define LP_CR0A 0x0000 // 0A setup register.
+#define LP_CR0B 0x0002 // 0B setup register.
+#define LP_CR1A 0x0004 // 1A setup register.
+#define LP_CR1B 0x0006 // 1B setup register.
+#define LP_CR2A 0x0008 // 2A setup register.
+#define LP_CR2B 0x000A // 2B setup register.
+// Counter PreLoad (write) and Latch (read) Registers:
+#define LP_CNTR0ALSW 0x000C // 0A lsw.
+#define LP_CNTR0AMSW 0x000E // 0A msw.
+#define LP_CNTR0BLSW 0x0010 // 0B lsw.
+#define LP_CNTR0BMSW 0x0012 // 0B msw.
+#define LP_CNTR1ALSW 0x0014 // 1A lsw.
+#define LP_CNTR1AMSW 0x0016 // 1A msw.
+#define LP_CNTR1BLSW 0x0018 // 1B lsw.
+#define LP_CNTR1BMSW 0x001A // 1B msw.
+#define LP_CNTR2ALSW 0x001C // 2A lsw.
+#define LP_CNTR2AMSW 0x001E // 2A msw.
+#define LP_CNTR2BLSW 0x0020 // 2B lsw.
+#define LP_CNTR2BMSW 0x0022 // 2B msw.
+// Miscellaneous Registers (read/write):
+#define LP_MISC1 0x0088 // Read/write Misc1.
+#define LP_WRMISC2 0x0090 // Write Misc2.
+#define LP_RDMISC2 0x0082 // Read Misc2.
+
+// Bit masks for MISC1 register that are the same for reads and writes.
+#define MISC1_WENABLE 0x8000 // enab writes to
+ // MISC2 (except Clear
+ // Watchdog bit).
+#define MISC1_WDISABLE 0x0000 // Disable writes to MISC2.
+#define MISC1_EDCAP 0x1000 // enab edge capture
+ // on DIO chans
+ // specified by
+ // LP_WRCAPSELx.
+#define MISC1_NOEDCAP 0x0000 // Disable edge
+ // capture on
+ // specified DIO
+ // chans.
+
+// Bit masks for MISC1 register reads.
+#define RDMISC1_WDTIMEOUT 0x4000 // Watchdog timer timed out.
+
+// Bit masks for MISC2 register writes.
+#define WRMISC2_WDCLEAR 0x8000 // Reset watchdog
+ // timer to zero.
+#define WRMISC2_CHARGE_ENABLE 0x4000 // enab battery
+ // trickle charging.
+
+// Bit masks for MISC2 register that are the same for reads and writes.
+#define MISC2_BATT_ENABLE 0x0008 // Backup battery enable.
+#define MISC2_WDENABLE 0x0004 // Watchdog timer enable.
+#define MISC2_WDPERIOD_MASK 0x0003 // Watchdog interval
+ // select mask.
+
+// Bit masks for ACON1 register.
+#define A2_RUN 0x40000000 // Run A2 based on TSL2.
+#define A1_RUN 0x20000000 // Run A1 based on TSL1.
+#define A1_SWAP 0x00200000 // Use big-endian for A1.
+#define A2_SWAP 0x00100000 // Use big-endian for A2.
+#define WS_MODES 0x00019999 // WS0 = TSL1 trigger
+ // input, WS1-WS4 =
+ // CS* outputs.
+
+#if PLATFORM == INTEL // Base ACON1 config:
+ // always run A1 based
+ // on TSL1.
+#define ACON1_BASE ( WS_MODES | A1_RUN )
+#elif PLATFORM == MOTOROLA
+#define ACON1_BASE ( WS_MODES | A1_RUN | A1_SWAP | A2_SWAP )
+#endif
+
+#define ACON1_ADCSTART ACON1_BASE // Start ADC: run A1
+ // based on TSL1.
+#define ACON1_DACSTART ( ACON1_BASE | A2_RUN ) // Start
+ // transmit to
+ // DAC: run A2
+ // based on
+ // TSL2.
+#define ACON1_DACSTOP ACON1_BASE // Halt A2.
+
+// Bit masks for ACON2 register.
+#define A1_CLKSRC_BCLK1 0x00000000 // A1 bit rate = BCLK1 (ADC).
+#define A2_CLKSRC_X1 0x00800000 // A2 bit rate = ACLK/1 (DACs).
+#define A2_CLKSRC_X2 0x00C00000 // A2 bit rate = ACLK/2 (DACs).
+#define A2_CLKSRC_X4 0x01400000 // A2 bit rate = ACLK/4 (DACs).
+#define INVERT_BCLK2 0x00100000 // Invert BCLK2 (DACs).
+#define BCLK2_OE 0x00040000 // enab BCLK2 (DACs).
+#define ACON2_XORMASK 0x000C0000 // XOR mask for ACON2
+ // active-low bits.
+
+#define ACON2_INIT ( ACON2_XORMASK ^ ( A1_CLKSRC_BCLK1 | A2_CLKSRC_X2 | INVERT_BCLK2 | BCLK2_OE ) )
+
+// Bit masks for timeslot records.
+#define WS1 0x40000000 // WS output to assert.
+#define WS2 0x20000000
+#define WS3 0x10000000
+#define WS4 0x08000000
+#define RSD1 0x01000000 // Shift A1 data in on SD1.
+#define SDW_A1 0x00800000 // Store rcv'd char at
+ // next char slot of
+ // DWORD1 buffer.
+#define SIB_A1 0x00400000 // Store rcv'd char at
+ // next char slot of
+ // FB1 buffer.
+#define SF_A1 0x00200000 // Write unsigned long
+ // buffer to input
+ // FIFO.
+
+//Select parallel-to-serial converter's data source:
+#define XFIFO_0 0x00000000 // Data fifo byte 0.
+#define XFIFO_1 0x00000010 // Data fifo byte 1.
+#define XFIFO_2 0x00000020 // Data fifo byte 2.
+#define XFIFO_3 0x00000030 // Data fifo byte 3.
+#define XFB0 0x00000040 // FB_BUFFER byte 0.
+#define XFB1 0x00000050 // FB_BUFFER byte 1.
+#define XFB2 0x00000060 // FB_BUFFER byte 2.
+#define XFB3 0x00000070 // FB_BUFFER byte 3.
+#define SIB_A2 0x00000200 // Store next dword
+ // from A2's input
+ // shifter to FB2
+ // buffer.
+#define SF_A2 0x00000100 // Store next dword
+ // from A2's input
+ // shifter to its
+ // input fifo.
+#define LF_A2 0x00000080 // Load next dword
+ // from A2's output
+ // fifo into its
+ // output dword
+ // buffer.
+#define XSD2 0x00000008 // Shift data out on SD2.
+#define RSD3 0x00001800 // Shift data in on SD3.
+#define RSD2 0x00001000 // Shift data in on SD2.
+#define LOW_A2 0x00000002 // Drive last SD low
+ // for 7 clks, then
+ // tri-state.
+#define EOS 0x00000001 // End of superframe.
+
+//////////////////////
+
+// I2C configuration constants.
+#define I2C_CLKSEL 0x0400 // I2C bit rate =
+ // PCIclk/480 = 68.75
+ // KHz.
+#define I2C_BITRATE 68.75 // I2C bus data bit
+ // rate (determined by
+ // I2C_CLKSEL) in KHz.
+#define I2C_WRTIME 15.0 // Worst case time,in
+ // msec, for EEPROM
+ // internal write op.
+
+// I2C manifest constants.
+
+// Max retries to wait for EEPROM write.
+#define I2C_RETRIES ( I2C_WRTIME * I2C_BITRATE / 9.0 )
+#define I2C_ERR 0x0002 // I2C control/status
+ // flag ERROR.
+#define I2C_BUSY 0x0001 // I2C control/status
+ // flag BUSY.
+#define I2C_ABORT 0x0080 // I2C status flag ABORT.
+#define I2C_ATTRSTART 0x3 // I2C attribute START.
+#define I2C_ATTRCONT 0x2 // I2C attribute CONT.
+#define I2C_ATTRSTOP 0x1 // I2C attribute STOP.
+#define I2C_ATTRNOP 0x0 // I2C attribute NOP.
+
+// I2C read command | EEPROM address.
+#define I2CR ( devpriv->I2CAdrs | 1 )
+
+// I2C write command | EEPROM address.
+#define I2CW ( devpriv->I2CAdrs )
+
+// Code macros used for constructing I2C command bytes.
+#define I2C_B2(ATTR,VAL) ( ( (ATTR) << 6 ) | ( (VAL) << 24 ) )
+#define I2C_B1(ATTR,VAL) ( ( (ATTR) << 4 ) | ( (VAL) << 16 ) )
+#define I2C_B0(ATTR,VAL) ( ( (ATTR) << 2 ) | ( (VAL) << 8 ) )
+
+////////////////////////////////////////////////////////
+//oldest
+#define P_DEBICFGq 0x007C // DEBI configuration.
+#define P_DEBICMDq 0x0080 // DEBI command.
+#define P_DEBIPAGEq 0x0084 // DEBI page.
+#define P_DEBIADq 0x0088 // DEBI target address.
+
+#define DEBI_CFG_TOQ 0x03C00000 // timeout (15 PCI cycles)
+#define DEBI_CFG_FASTQ 0x10000000 // fast mode enable
+#define DEBI_CFG_16Q 0x00080000 // 16-bit access enable
+#define DEBI_CFG_INCQ 0x00040000 // enable address increment
+#define DEBI_CFG_TIMEROFFQ 0x00010000 // disable timer
+#define DEBI_CMD_RDQ 0x00050000 // read immediate 2 bytes
+#define DEBI_CMD_WRQ 0x00040000 // write immediate 2 bytes
+#define DEBI_PAGE_DISABLEQ 0x00000000 // paging disable
+
+///////////////////////////////////////////
+// DEBI command constants.
+#define DEBI_CMD_SIZE16 ( 2 << 17 ) // Transfer size is
+ // always 2 bytes.
+#define DEBI_CMD_READ 0x00010000 // Read operation.
+#define DEBI_CMD_WRITE 0x00000000 // Write operation.
+
+// Read immediate 2 bytes.
+#define DEBI_CMD_RDWORD ( DEBI_CMD_READ | DEBI_CMD_SIZE16 )
+
+// Write immediate 2 bytes.
+#define DEBI_CMD_WRWORD ( DEBI_CMD_WRITE | DEBI_CMD_SIZE16 )
+
+// DEBI configuration constants.
+#define DEBI_CFG_XIRQ_EN 0x80000000 // enab external
+ // interrupt on GPIO3.
+#define DEBI_CFG_XRESUME 0x40000000 // Resume block
+ // transfer when XIRQ
+ // deasserted.
+#define DEBI_CFG_FAST 0x10000000 // Fast mode enable.
+
+// 4-bit field that specifies DEBI timeout value in PCI clock cycles:
+#define DEBI_CFG_TOUT_BIT 22 // Finish DEBI cycle after
+ // this many clocks.
+
+// 2-bit field that specifies Endian byte lane steering:
+#define DEBI_CFG_SWAP_NONE 0x00000000 // Straight - don't
+ // swap any bytes
+ // (Intel).
+#define DEBI_CFG_SWAP_2 0x00100000 // 2-byte swap (Motorola).
+#define DEBI_CFG_SWAP_4 0x00200000 // 4-byte swap.
+#define DEBI_CFG_16 0x00080000 // Slave is able to
+ // serve 16-bit
+ // cycles.
+
+#define DEBI_CFG_SLAVE16 0x00080000 // Slave is able to
+ // serve 16-bit
+ // cycles.
+#define DEBI_CFG_INC 0x00040000 // enab address
+ // increment for block
+ // transfers.
+#define DEBI_CFG_INTEL 0x00020000 // Intel style local bus.
+#define DEBI_CFG_TIMEROFF 0x00010000 // Disable timer.
+
+#if PLATFORM == INTEL
+
+#define DEBI_TOUT 7 // Wait 7 PCI clocks
+ // (212 ns) before
+ // polling RDY.
+
+// Intel byte lane steering (pass through all byte lanes).
+#define DEBI_SWAP DEBI_CFG_SWAP_NONE
+
+#elif PLATFORM == MOTOROLA
+
+#define DEBI_TOUT 15 // Wait 15 PCI clocks (454 ns)
+ // maximum before timing out.
+#define DEBI_SWAP DEBI_CFG_SWAP_2 // Motorola byte lane steering.
+
+#endif
+
+// DEBI page table constants.
+#define DEBI_PAGE_DISABLE 0x00000000 // Paging disable.
+
+///////////////////EXTRA FROM OTHER SANSORAY * .h////////
+
+// LoadSrc values:
+#define LOADSRC_INDX 0 // Preload core in response to
+ // Index.
+#define LOADSRC_OVER 1 // Preload core in response to
+ // Overflow.
+#define LOADSRCB_OVERA 2 // Preload B core in response
+ // to A Overflow.
+#define LOADSRC_NONE 3 // Never preload core.
+
+// IntSrc values:
+#define INTSRC_NONE 0 // Interrupts disabled.
+#define INTSRC_OVER 1 // Interrupt on Overflow.
+#define INTSRC_INDX 2 // Interrupt on Index.
+#define INTSRC_BOTH 3 // Interrupt on Index or Overflow.
+
+// LatchSrc values:
+#define LATCHSRC_AB_READ 0 // Latch on read.
+#define LATCHSRC_A_INDXA 1 // Latch A on A Index.
+#define LATCHSRC_B_INDXB 2 // Latch B on B Index.
+#define LATCHSRC_B_OVERA 3 // Latch B on A Overflow.
+
+// IndxSrc values:
+#define INDXSRC_HARD 0 // Hardware or software index.
+#define INDXSRC_SOFT 1 // Software index only.
+
+// IndxPol values:
+#define INDXPOL_POS 0 // Index input is active high.
+#define INDXPOL_NEG 1 // Index input is active low.
+
+// ClkSrc values:
+#define CLKSRC_COUNTER 0 // Counter mode.
+#define CLKSRC_TIMER 2 // Timer mode.
+#define CLKSRC_EXTENDER 3 // Extender mode.
+
+// ClkPol values:
+#define CLKPOL_POS 0 // Counter/Extender clock is
+ // active high.
+#define CLKPOL_NEG 1 // Counter/Extender clock is
+ // active low.
+#define CNTDIR_UP 0 // Timer counts up.
+#define CNTDIR_DOWN 1 // Timer counts down.
+
+// ClkEnab values:
+#define CLKENAB_ALWAYS 0 // Clock always enabled.
+#define CLKENAB_INDEX 1 // Clock is enabled by index.
+
+// ClkMult values:
+#define CLKMULT_4X 0 // 4x clock multiplier.
+#define CLKMULT_2X 1 // 2x clock multiplier.
+#define CLKMULT_1X 2 // 1x clock multiplier.
+
+// Bit Field positions in COUNTER_SETUP structure:
+#define BF_LOADSRC 9 // Preload trigger.
+#define BF_INDXSRC 7 // Index source.
+#define BF_INDXPOL 6 // Index polarity.
+#define BF_CLKSRC 4 // Clock source.
+#define BF_CLKPOL 3 // Clock polarity/count direction.
+#define BF_CLKMULT 1 // Clock multiplier.
+#define BF_CLKENAB 0 // Clock enable.
+
+// Enumerated counter operating modes specified by ClkSrc bit field in
+// a COUNTER_SETUP.
+
+#define CLKSRC_COUNTER 0 // Counter: ENC_C clock, ENC_D
+ // direction.
+#define CLKSRC_TIMER 2 // Timer: SYS_C clock,
+ // direction specified by
+ // ClkPol.
+#define CLKSRC_EXTENDER 3 // Extender: OVR_A clock,
+ // ENC_D direction.
+
+// Enumerated counter clock multipliers.
+
+#define MULT_X0 0x0003 // Supports no multipliers;
+ // fixed physical multiplier =
+ // 3.
+#define MULT_X1 0x0002 // Supports multiplier x1;
+ // fixed physical multiplier =
+ // 2.
+#define MULT_X2 0x0001 // Supports multipliers x1,
+ // x2; physical multipliers =
+ // 1 or 2.
+#define MULT_X4 0x0000 // Supports multipliers x1,
+ // x2, x4; physical
+ // multipliers = 0, 1 or 2.
+
+// Sanity-check limits for parameters.
+
+#define NUM_COUNTERS 6 // Maximum valid counter
+ // logical channel number.
+#define NUM_INTSOURCES 4
+#define NUM_LATCHSOURCES 4
+#define NUM_CLKMULTS 4
+#define NUM_CLKSOURCES 4
+#define NUM_CLKPOLS 2
+#define NUM_INDEXPOLS 2
+#define NUM_INDEXSOURCES 2
+#define NUM_LOADTRIGS 4
+
+// Bit field positions in CRA and CRB counter control registers.
+
+// Bit field positions in CRA:
+#define CRABIT_INDXSRC_B 14 // B index source.
+#define CRABIT_CLKSRC_B 12 // B clock source.
+#define CRABIT_INDXPOL_A 11 // A index polarity.
+#define CRABIT_LOADSRC_A 9 // A preload trigger.
+#define CRABIT_CLKMULT_A 7 // A clock multiplier.
+#define CRABIT_INTSRC_A 5 // A interrupt source.
+#define CRABIT_CLKPOL_A 4 // A clock polarity.
+#define CRABIT_INDXSRC_A 2 // A index source.
+#define CRABIT_CLKSRC_A 0 // A clock source.
+
+// Bit field positions in CRB:
+#define CRBBIT_INTRESETCMD 15 // Interrupt reset command.
+#define CRBBIT_INTRESET_B 14 // B interrupt reset enable.
+#define CRBBIT_INTRESET_A 13 // A interrupt reset enable.
+#define CRBBIT_CLKENAB_A 12 // A clock enable.
+#define CRBBIT_INTSRC_B 10 // B interrupt source.
+#define CRBBIT_LATCHSRC 8 // A/B latch source.
+#define CRBBIT_LOADSRC_B 6 // B preload trigger.
+#define CRBBIT_CLKMULT_B 3 // B clock multiplier.
+#define CRBBIT_CLKENAB_B 2 // B clock enable.
+#define CRBBIT_INDXPOL_B 1 // B index polarity.
+#define CRBBIT_CLKPOL_B 0 // B clock polarity.
+
+// Bit field masks for CRA and CRB.
+
+#define CRAMSK_INDXSRC_B ( (uint16_t)( 3 << CRABIT_INDXSRC_B) )
+#define CRAMSK_CLKSRC_B ( (uint16_t)( 3 << CRABIT_CLKSRC_B) )
+#define CRAMSK_INDXPOL_A ( (uint16_t)( 1 << CRABIT_INDXPOL_A) )
+#define CRAMSK_LOADSRC_A ( (uint16_t)( 3 << CRABIT_LOADSRC_A) )
+#define CRAMSK_CLKMULT_A ( (uint16_t)( 3 << CRABIT_CLKMULT_A) )
+#define CRAMSK_INTSRC_A ( (uint16_t)( 3 << CRABIT_INTSRC_A) )
+#define CRAMSK_CLKPOL_A ( (uint16_t)( 3 << CRABIT_CLKPOL_A) )
+#define CRAMSK_INDXSRC_A ( (uint16_t)( 3 << CRABIT_INDXSRC_A) )
+#define CRAMSK_CLKSRC_A ( (uint16_t)( 3 << CRABIT_CLKSRC_A) )
+
+#define CRBMSK_INTRESETCMD ( (uint16_t)( 1 << CRBBIT_INTRESETCMD) )
+#define CRBMSK_INTRESET_B ( (uint16_t)( 1 << CRBBIT_INTRESET_B) )
+#define CRBMSK_INTRESET_A ( (uint16_t)( 1 << CRBBIT_INTRESET_A) )
+#define CRBMSK_CLKENAB_A ( (uint16_t)( 1 << CRBBIT_CLKENAB_A) )
+#define CRBMSK_INTSRC_B ( (uint16_t)( 3 << CRBBIT_INTSRC_B) )
+#define CRBMSK_LATCHSRC ( (uint16_t)( 3 << CRBBIT_LATCHSRC) )
+#define CRBMSK_LOADSRC_B ( (uint16_t)( 3 << CRBBIT_LOADSRC_B) )
+#define CRBMSK_CLKMULT_B ( (uint16_t)( 3 << CRBBIT_CLKMULT_B) )
+#define CRBMSK_CLKENAB_B ( (uint16_t)( 1 << CRBBIT_CLKENAB_B) )
+#define CRBMSK_INDXPOL_B ( (uint16_t)( 1 << CRBBIT_INDXPOL_B) )
+#define CRBMSK_CLKPOL_B ( (uint16_t)( 1 << CRBBIT_CLKPOL_B) )
+
+#define CRBMSK_INTCTRL ( CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A | CRBMSK_INTRESET_B ) // Interrupt reset control bits.
+
+// Bit field positions for standardized SETUP structure.
+
+#define STDBIT_INTSRC 13
+#define STDBIT_LATCHSRC 11
+#define STDBIT_LOADSRC 9
+#define STDBIT_INDXSRC 7
+#define STDBIT_INDXPOL 6
+#define STDBIT_CLKSRC 4
+#define STDBIT_CLKPOL 3
+#define STDBIT_CLKMULT 1
+#define STDBIT_CLKENAB 0
+
+// Bit field masks for standardized SETUP structure.
+
+#define STDMSK_INTSRC ( (uint16_t)( 3 << STDBIT_INTSRC ) )
+#define STDMSK_LATCHSRC ( (uint16_t)( 3 << STDBIT_LATCHSRC ) )
+#define STDMSK_LOADSRC ( (uint16_t)( 3 << STDBIT_LOADSRC ) )
+#define STDMSK_INDXSRC ( (uint16_t)( 1 << STDBIT_INDXSRC ) )
+#define STDMSK_INDXPOL ( (uint16_t)( 1 << STDBIT_INDXPOL ) )
+#define STDMSK_CLKSRC ( (uint16_t)( 3 << STDBIT_CLKSRC ) )
+#define STDMSK_CLKPOL ( (uint16_t)( 1 << STDBIT_CLKPOL ) )
+#define STDMSK_CLKMULT ( (uint16_t)( 3 << STDBIT_CLKMULT ) )
+#define STDMSK_CLKENAB ( (uint16_t)( 1 << STDBIT_CLKENAB ) )
+
+//////////////////////////////////////////////////////////
+
+/* typedef struct indexCounter */
+/* { */
+/* unsigned int ao; */
+/* unsigned int ai; */
+/* unsigned int digout; */
+/* unsigned int digin; */
+/* unsigned int enc; */
+/* }CallCounter; */
+
+typedef struct bufferDMA {
+ dma_addr_t PhysicalBase;
+ void *LogicalBase;
+ uint32_t DMAHandle;
+} DMABUF;
git.openpandora.org / pandora-kernel.git / commitdiff