From e3bd4c8e0f278dad527c2b5f6b0d895dfba9af31 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 25 Feb 2015 16:28:40 -0700 Subject: [PATCH] staging: comedi: cb_pcimdas: define the register map Add defines for the registers and bits. Use the defines to remove the "magic" numbers. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/cb_pcimdas.c | 133 +++++++++++++------- 1 file changed, 86 insertions(+), 47 deletions(-) diff --git a/drivers/staging/comedi/drivers/cb_pcimdas.c b/drivers/staging/comedi/drivers/cb_pcimdas.c index 5d08ca439bc9..b0cc4f59789d 100644 --- a/drivers/staging/comedi/drivers/cb_pcimdas.c +++ b/drivers/staging/comedi/drivers/cb_pcimdas.c @@ -50,29 +50,73 @@ #include "plx9052.h" #include "8255.h" -/* Registers for the PCIM-DAS1602/16 and PCIe-DAS1602/16 */ - -/* DAC Offsets */ -#define ADC_TRIG 0 -#define DAC0_OFFSET 2 -#define DAC1_OFFSET 4 - -/* AI and Counter Constants */ -#define MUX_LIMITS 0 -#define MAIN_CONN_DIO 1 -#define ADC_STAT 2 -#define ADC_CONV_STAT 3 -#define ADC_INT 4 -#define ADC_PACER 5 -#define BURST_MODE 6 -#define PROG_GAIN 7 -#define CLK8254_1_DATA 8 -#define CLK8254_2_DATA 9 -#define CLK8254_3_DATA 10 -#define CLK8254_CONTROL 11 -#define USER_COUNTER 12 -#define RESID_COUNT_H 13 -#define RESID_COUNT_L 14 +/* + * PCI Bar 1 Register map + * see plx9052.h for register and bit defines + */ + +/* + * PCI Bar 2 Register map (devpriv->daqio) + */ +#define PCIMDAS_AI_REG 0x00 +#define PCIMDAS_AI_SOFTTRIG_REG 0x00 +#define PCIMDAS_AO_REG(x) (0x02 + ((x) * 2)) + +/* + * PCI Bar 3 Register map (devpriv->BADR3) + */ +#define PCIMDAS_MUX_REG 0x00 +#define PCIMDAS_MUX(_lo, _hi) ((_lo) | ((_hi) << 4)) +#define PCIMDAS_DI_DO_REG 0x01 +#define PCIMDAS_STATUS_REG 0x02 +#define PCIMDAS_STATUS_EOC BIT(7) +#define PCIMDAS_STATUS_UB BIT(6) +#define PCIMDAS_STATUS_MUX BIT(5) +#define PCIMDAS_STATUS_CLK BIT(4) +#define PCIMDAS_STATUS_TO_CURR_MUX(x) ((x) & 0xf) +#define PCIMDAS_CONV_STATUS_REG 0x03 +#define PCIMDAS_CONV_STATUS_EOC BIT(7) +#define PCIMDAS_CONV_STATUS_EOB BIT(6) +#define PCIMDAS_CONV_STATUS_EOA BIT(5) +#define PCIMDAS_CONV_STATUS_FNE BIT(4) +#define PCIMDAS_CONV_STATUS_FHF BIT(3) +#define PCIMDAS_CONV_STATUS_OVERRUN BIT(2) +#define PCIMDAS_IRQ_REG 0x04 +#define PCIMDAS_IRQ_INTE BIT(7) +#define PCIMDAS_IRQ_INT BIT(6) +#define PCIMDAS_IRQ_OVERRUN BIT(4) +#define PCIMDAS_IRQ_EOA BIT(3) +#define PCIMDAS_IRQ_EOA_INT_SEL BIT(2) +#define PCIMDAS_IRQ_INTSEL(x) ((x) << 0) +#define PCIMDAS_IRQ_INTSEL_EOC PCIMDAS_IRQ_INTSEL(0) +#define PCIMDAS_IRQ_INTSEL_FNE PCIMDAS_IRQ_INTSEL(1) +#define PCIMDAS_IRQ_INTSEL_EOB PCIMDAS_IRQ_INTSEL(2) +#define PCIMDAS_IRQ_INTSEL_FHF_EOA PCIMDAS_IRQ_INTSEL(3) +#define PCIMDAS_PACER_REG 0x05 +#define PCIMDAS_PACER_GATE_STATUS BIT(6) +#define PCIMDAS_PACER_GATE_POL BIT(5) +#define PCIMDAS_PACER_GATE_LATCH BIT(4) +#define PCIMDAS_PACER_GATE_EN BIT(3) +#define PCIMDAS_PACER_EXT_PACER_POL BIT(2) +#define PCIMDAS_PACER_SRC(x) ((x) << 0) +#define PCIMDAS_PACER_SRC_POLLED PCIMDAS_PACER_SRC(0) +#define PCIMDAS_PACER_SRC_EXT PCIMDAS_PACER_SRC(2) +#define PCIMDAS_PACER_SRC_INT PCIMDAS_PACER_SRC(3) +#define PCIMDAS_PACER_SRC_MASK (3 << 0) +#define PCIMDAS_BURST_REG 0x06 +#define PCIMDAS_BURST_BME BIT(1) +#define PCIMDAS_BURST_CONV_EN BIT(0) +#define PCIMDAS_GAIN_REG 0x07 +#define PCIMDAS_8254_BASE 0x08 +#define PCIMDAS_USER_CNTR_REG 0x0c +#define PCIMDAS_USER_CNTR_CTR1_CLK_SEL BIT(0) +#define PCIMDAS_RESIDUE_MSB_REG 0x0d +#define PCIMDAS_RESIDUE_LSB_REG 0x0e + +/* + * PCI Bar 4 Register map (dev->iobase) + */ +#define PCIMDAS_8255_BASE 0x00 static const struct comedi_lrange cb_pcimdas_ai_bip_range = { 4, { @@ -112,8 +156,8 @@ static int cb_pcimdas_ai_eoc(struct comedi_device *dev, struct cb_pcimdas_private *devpriv = dev->private; unsigned int status; - status = inb(devpriv->BADR3 + 2); - if ((status & 0x80) == 0) + status = inb(devpriv->BADR3 + PCIMDAS_STATUS_REG); + if ((status & PCIMDAS_STATUS_EOC) == 0) return 0; return -EBUSY; } @@ -127,35 +171,31 @@ static int cb_pcimdas_ai_rinsn(struct comedi_device *dev, unsigned int range = CR_RANGE(insn->chanspec); int n; unsigned int d; - unsigned short chanlims; int ret; /* only support sw initiated reads from a single channel */ /* configure for sw initiated read */ - d = inb(devpriv->BADR3 + 5); - if ((d & 0x03) > 0) { /* only reset if needed. */ - d = d & 0xfd; - outb(d, devpriv->BADR3 + 5); + d = inb(devpriv->BADR3 + PCIMDAS_PACER_REG); + if ((d & PCIMDAS_PACER_SRC_MASK) != PCIMDAS_PACER_SRC_POLLED) { + d &= ~PCIMDAS_PACER_SRC_MASK; + d |= PCIMDAS_PACER_SRC_POLLED; + outb(d, devpriv->BADR3 + PCIMDAS_PACER_REG); } /* set bursting off, conversions on */ - outb(0x01, devpriv->BADR3 + 6); + outb(PCIMDAS_BURST_CONV_EN, devpriv->BADR3 + PCIMDAS_BURST_REG); /* set range */ - outb(range, devpriv->BADR3 + 7); + outb(range, devpriv->BADR3 + PCIMDAS_GAIN_REG); - /* - * write channel limits to multiplexer, set Low (bits 0-3) and - * High (bits 4-7) channels to chan. - */ - chanlims = chan | (chan << 4); - outb(chanlims, devpriv->BADR3 + 0); + /* set mux for single channel scan */ + outb(PCIMDAS_MUX(chan, chan), devpriv->BADR3 + PCIMDAS_MUX_REG); /* convert n samples */ for (n = 0; n < insn->n; n++) { /* trigger conversion */ - outw(0, devpriv->daqio + 0); + outw(0, devpriv->daqio + PCIMDAS_AI_SOFTTRIG_REG); /* wait for conversion to end */ ret = comedi_timeout(dev, s, insn, cb_pcimdas_ai_eoc, 0); @@ -163,7 +203,7 @@ static int cb_pcimdas_ai_rinsn(struct comedi_device *dev, return ret; /* read data */ - data[n] = inw(devpriv->daqio + 0); + data[n] = inw(devpriv->daqio + PCIMDAS_AI_REG); } /* return the number of samples read/written */ @@ -178,12 +218,11 @@ static int cb_pcimdas_ao_insn_write(struct comedi_device *dev, struct cb_pcimdas_private *devpriv = dev->private; unsigned int chan = CR_CHAN(insn->chanspec); unsigned int val = s->readback[chan]; - unsigned int reg = (chan) ? DAC1_OFFSET : DAC0_OFFSET; int i; for (i = 0; i < insn->n; i++) { val = data[i]; - outw(val, devpriv->daqio + reg); + outw(val, devpriv->daqio + PCIMDAS_AO_REG(chan)); } s->readback[chan] = val; @@ -200,8 +239,8 @@ static bool cb_pcimdas_is_ai_se(struct comedi_device *dev) * Analog Input Mode Switch on the board. The board can * have 16 single-ended or 8 differential channels. */ - status = inb(devpriv->BADR3 + 2); - return status & 0x20; + status = inb(devpriv->BADR3 + PCIMDAS_STATUS_REG); + return status & PCIMDAS_STATUS_MUX; } static bool cb_pcimdas_is_ai_uni(struct comedi_device *dev) @@ -214,8 +253,8 @@ static bool cb_pcimdas_is_ai_uni(struct comedi_device *dev) * Analog Input Polarity Switch on the board. The * inputs can be set to Unipolar or Bipolar ranges. */ - status = inb(devpriv->BADR3 + 2); - return status & 0x40; + status = inb(devpriv->BADR3 + PCIMDAS_STATUS_REG); + return status & PCIMDAS_STATUS_UB; } static int cb_pcimdas_auto_attach(struct comedi_device *dev, @@ -277,7 +316,7 @@ static int cb_pcimdas_auto_attach(struct comedi_device *dev, s = &dev->subdevices[2]; /* digital i/o subdevice */ - ret = subdev_8255_init(dev, s, NULL, 0x00); + ret = subdev_8255_init(dev, s, NULL, PCIMDAS_8255_BASE); if (ret) return ret; -- 2.39.2