staging: comedi: adv_pci1710: tidy up control register and bits

Rename the CamelCase and use the BIT macro to define the bits.
Also, rename the associated CamelCase members of the private data.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c b/drivers/staging/comedi/drivers/adv_pci1710.c
index e7a6dc5..0184667 100644 (file)
--- a/drivers/staging/comedi/drivers/adv_pci1710.c
+++ b/drivers/staging/comedi/drivers/adv_pci1710.c
@@ -43,7 +43,14 @@
 #define PCI171X_STATUS_FF      BIT(10) /* 1=FIFO is full, fatal error */
 #define PCI171X_STATUS_FH      BIT(9)  /* 1=FIFO is half full */
 #define PCI171X_STATUS_FE      BIT(8)  /* 1=FIFO is empty */
-#define PCI171x_CONTROL         6      /* W:   control register */
+#define PCI171X_CTRL_REG       0x06    /* W:   control register */
+#define PCI171X_CTRL_CNT0      BIT(6)  /* 1=ext. clk, 0=int. 100kHz clk */
+#define PCI171X_CTRL_ONEFH     BIT(5)  /* 1=on FIFO half full, 0=on sample */
+#define PCI171X_CTRL_IRQEN     BIT(4)  /* 1=enable IRQ */
+#define PCI171X_CTRL_GATE      BIT(3)  /* 1=enable ext. trigger GATE (8254?) */
+#define PCI171X_CTRL_EXT       BIT(2)  /* 1=enable ext. trigger source */
+#define PCI171X_CTRL_PACER     BIT(1)  /* 1=enable int. 8254 trigger source */
+#define PCI171X_CTRL_SW                BIT(0)  /* 1=enable software trigger source */
 #define PCI171x_CLRINT  8      /* W:   clear interrupts request */
 #define PCI171x_CLRFIFO         9      /* W:   clear FIFO */
 #define PCI171x_DA1    10      /* W:   D/A register */
@@ -54,16 +61,6 @@
 
 #define PCI171X_TIMER_BASE     0x18
 
-/* bits from control register (PCI171x_CONTROL) */
-#define Control_CNT0   0x0040  /* 1=CNT0 have external source,
-                                * 0=have internal 100kHz source */
-#define Control_ONEFH  0x0020  /* 1=IRQ on FIFO is half full, 0=every sample */
-#define Control_IRQEN  0x0010  /* 1=enable IRQ */
-#define Control_GATE   0x0008  /* 1=enable external trigger GATE (8254?) */
-#define Control_EXT    0x0004  /* 1=external trigger source */
-#define Control_PACER  0x0002  /* 1=enable internal 8254 trigger source */
-#define Control_SW     0x0001  /* 1=enable software trigger source */
-
 #define PCI1720_DA0     0      /* W:   D/A register 0 */
 #define PCI1720_DA1     2      /* W:   D/A register 1 */
 #define PCI1720_DA2     4      /* W:   D/A register 2 */
@@ -227,9 +224,9 @@ static const struct boardtype boardtypes[] = {
 
 struct pci1710_private {
        unsigned int max_samples;
-       unsigned int CntrlReg;  /*  Control register */
+       unsigned int ctrl;      /* control register value */
+       unsigned int ctrl_ext;  /* used to switch from TRIG_EXT to TRIG_xxx */
        unsigned char ai_et;
-       unsigned int ai_et_CntrlReg;
        unsigned int ai_et_MuxVal;
        unsigned int act_chanlist[32];  /*  list of scanned channel */
        unsigned char saved_seglen;     /* len of the non-repeating chanlist */
@@ -389,9 +386,9 @@ static int pci171x_ai_insn_read(struct comedi_device *dev,
        int ret = 0;
        int i;
 
-       devpriv->CntrlReg &= Control_CNT0;
-       devpriv->CntrlReg |= Control_SW;        /*  set software trigger */
-       outw(devpriv->CntrlReg, dev->iobase + PCI171x_CONTROL);
+       devpriv->ctrl &= PCI171X_CTRL_CNT0;
+       devpriv->ctrl |= PCI171X_CTRL_SW;       /*  set software trigger */
+       outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
        outb(0, dev->iobase + PCI171x_CLRFIFO);
        outb(0, dev->iobase + PCI171x_CLRINT);
 
@@ -503,10 +500,10 @@ static int pci171x_ai_cancel(struct comedi_device *dev,
 {
        struct pci1710_private *devpriv = dev->private;
 
-       devpriv->CntrlReg &= Control_CNT0;
-       devpriv->CntrlReg |= Control_SW;
+       devpriv->ctrl &= PCI171X_CTRL_CNT0;
+       devpriv->ctrl |= PCI171X_CTRL_SW;
        /* reset any operations */
-       outw(devpriv->CntrlReg, dev->iobase + PCI171x_CONTROL);
+       outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
        comedi_8254_pacer_enable(dev->pacer, 1, 2, false);
        outb(0, dev->iobase + PCI171x_CLRFIFO);
        outb(0, dev->iobase + PCI171x_CLRINT);
@@ -620,14 +617,14 @@ static irqreturn_t interrupt_service_pci1710(int irq, void *d)
 
        if (devpriv->ai_et) {   /*  Switch from initial TRIG_EXT to TRIG_xxx. */
                devpriv->ai_et = 0;
-               devpriv->CntrlReg &= Control_CNT0;
-               devpriv->CntrlReg |= Control_SW; /* set software trigger */
-               outw(devpriv->CntrlReg, dev->iobase + PCI171x_CONTROL);
-               devpriv->CntrlReg = devpriv->ai_et_CntrlReg;
+               devpriv->ctrl &= PCI171X_CTRL_CNT0;
+               devpriv->ctrl |= PCI171X_CTRL_SW; /* set software trigger */
+               outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
+               devpriv->ctrl = devpriv->ctrl_ext;
                outb(0, dev->iobase + PCI171x_CLRFIFO);
                outb(0, dev->iobase + PCI171x_CLRINT);
                outw(devpriv->ai_et_MuxVal, dev->iobase + PCI171x_MUX);
-               outw(devpriv->CntrlReg, dev->iobase + PCI171x_CONTROL);
+               outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
                comedi_8254_pacer_enable(dev->pacer, 1, 2, true);
                return IRQ_HANDLED;
        }
@@ -653,30 +650,31 @@ static int pci171x_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
        outb(0, dev->iobase + PCI171x_CLRFIFO);
        outb(0, dev->iobase + PCI171x_CLRINT);
 
-       devpriv->CntrlReg &= Control_CNT0;
+       devpriv->ctrl &= PCI171X_CTRL_CNT0;
        if ((cmd->flags & CMDF_WAKE_EOS) == 0)
-               devpriv->CntrlReg |= Control_ONEFH;
+               devpriv->ctrl |= PCI171X_CTRL_ONEFH;
 
        if (cmd->convert_src == TRIG_TIMER) {
                comedi_8254_update_divisors(dev->pacer);
 
-               devpriv->CntrlReg |= Control_PACER | Control_IRQEN;
+               devpriv->ctrl |= PCI171X_CTRL_PACER | PCI171X_CTRL_IRQEN;
                if (cmd->start_src == TRIG_EXT) {
-                       devpriv->ai_et_CntrlReg = devpriv->CntrlReg;
-                       devpriv->CntrlReg &=
-                           ~(Control_PACER | Control_ONEFH | Control_GATE);
-                       devpriv->CntrlReg |= Control_EXT;
+                       devpriv->ctrl_ext = devpriv->ctrl;
+                       devpriv->ctrl &= ~(PCI171X_CTRL_PACER |
+                                          PCI171X_CTRL_ONEFH |
+                                          PCI171X_CTRL_GATE);
+                       devpriv->ctrl |= PCI171X_CTRL_EXT;
                        devpriv->ai_et = 1;
                } else {        /* TRIG_NOW */
                        devpriv->ai_et = 0;
                }
-               outw(devpriv->CntrlReg, dev->iobase + PCI171x_CONTROL);
+               outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
 
                if (cmd->start_src == TRIG_NOW)
                        comedi_8254_pacer_enable(dev->pacer, 1, 2, true);
        } else {        /* TRIG_EXT */
-               devpriv->CntrlReg |= Control_EXT | Control_IRQEN;
-               outw(devpriv->CntrlReg, dev->iobase + PCI171x_CONTROL);
+               devpriv->ctrl |= PCI171X_CTRL_EXT | PCI171X_CTRL_IRQEN;
+               outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
        }
 
        return 0;
@@ -765,18 +763,18 @@ static int pci171x_insn_counter_config(struct comedi_device *dev,
        case INSN_CONFIG_SET_CLOCK_SRC:
                switch (data[1]) {
                case 0: /* internal */
-                       devpriv->ai_et_CntrlReg &= ~Control_CNT0;
+                       devpriv->ctrl_ext &= ~PCI171X_CTRL_CNT0;
                        break;
                case 1: /* external */
-                       devpriv->ai_et_CntrlReg |= Control_CNT0;
+                       devpriv->ctrl_ext |= PCI171X_CTRL_CNT0;
                        break;
                default:
                        return -EINVAL;
                }
-               outw(devpriv->ai_et_CntrlReg, dev->iobase + PCI171x_CONTROL);
+               outw(devpriv->ctrl_ext, dev->iobase + PCI171X_CTRL_REG);
                break;
        case INSN_CONFIG_GET_CLOCK_SRC:
-               if (devpriv->ai_et_CntrlReg & Control_CNT0) {
+               if (devpriv->ctrl_ext & PCI171X_CTRL_CNT0) {
                        data[1] = 1;
                        data[2] = 0;
                } else {
@@ -797,9 +795,9 @@ static int pci171x_reset(struct comedi_device *dev)
        struct pci1710_private *devpriv = dev->private;
 
        /* Software trigger, CNT0=external */
-       devpriv->CntrlReg = Control_SW | Control_CNT0;
+       devpriv->ctrl = PCI171X_CTRL_SW | PCI171X_CTRL_CNT0;
        /* reset any operations */
-       outw(devpriv->CntrlReg, dev->iobase + PCI171x_CONTROL);
+       outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG);
        outb(0, dev->iobase + PCI171x_CLRFIFO); /*  clear FIFO */
        outb(0, dev->iobase + PCI171x_CLRINT);  /*  clear INT request */
        devpriv->da_ranges = 0;