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staging: comedi: quatech_daqp_cs: tidy up command register bits

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For aesthetics, move the bit defines for this register and use the
BIT macro to define the bits. Define a macro for the scanrate bits
and use it to remove the CamelCase. Rename the defines to match the
register.

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>
This commit is contained in:
H Hartley Sweeten
2015-10-05 14:23:01 -07:00
committed by Greg Kroah-Hartman
parent cd644206e2
commit f765b2f4fb
1 changed files with 22 additions and 20 deletions
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42
drivers/staging/comedi/drivers/quatech_daqp_cs.c
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@@ -93,25 +93,28 @@
#define DAQP_DI_REG 0x03
#define DAQP_DO_REG 0x03
#define DAQP_PACER_LOW_REG 0x04
#define DAQP_PACER_MID_REG 0x05
#define DAQP_PACER_HIGH_REG 0x06
#define DAQP_CMD_REG 0x07
/* the monostable bits are self-clearing after the function is complete */
#define DAQP_CMD_ARM BIT(7) /* monostable */
#define DAQP_CMD_RSTF BIT(6) /* monostable */
#define DAQP_CMD_RSTQ BIT(5) /* monostable */
#define DAQP_CMD_STOP BIT(4) /* monostable */
#define DAQP_CMD_LATCH BIT(3) /* monostable */
#define DAQP_CMD_SCANRATE(x) (((x) & 0x3) << 1)
#define DAQP_CMD_SCANRATE_100KHZ DAQP_CMD_SCANRATE(0)
#define DAQP_CMD_SCANRATE_50KHZ DAQP_CMD_SCANRATE(1)
#define DAQP_CMD_SCANRATE_25KHZ DAQP_CMD_SCANRATE(2)
#define DAQP_CMD_FIFO_DATA BIT(0)
#define DAQP_AO_REG 0x08
#define DAQP_TIMER_REG 0x0a
#define DAQP_AUX_REG 0x0f
#define DAQP_COMMAND_ARM 0x80
#define DAQP_COMMAND_RSTF 0x40
#define DAQP_COMMAND_RSTQ 0x20
#define DAQP_COMMAND_STOP 0x10
#define DAQP_COMMAND_LATCH 0x08
#define DAQP_COMMAND_100kHz 0x00
#define DAQP_COMMAND_50kHz 0x02
#define DAQP_COMMAND_25kHz 0x04
#define DAQP_COMMAND_FIFO_DATA 0x01
#define DAQP_COMMAND_FIFO_PROGRAM 0x00
#define DAQP_AUX_TRIGGER_TTL 0x00
#define DAQP_AUX_TRIGGER_ANALOG 0x80
#define DAQP_AUX_TRIGGER_PRETRIGGER 0x40
@@ -181,10 +184,10 @@ static int daqp_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
if (devpriv->stop)
return -EIO;
outb(DAQP_COMMAND_STOP, dev->iobase + DAQP_CMD_REG);
outb(DAQP_CMD_STOP, dev->iobase + DAQP_CMD_REG);
/* flush any linguring data in FIFO - superfluous here */
/* outb(DAQP_COMMAND_RSTF, dev->iobase + DAQP_CMD_REG); */
/* outb(DAQP_CMD_RSTF, dev->iobase + DAQP_CMD_REG); */
devpriv->interrupt_mode = semaphore;
@@ -310,14 +313,14 @@ static int daqp_ai_insn_read(struct comedi_device *dev,
outb(0, dev->iobase + DAQP_AUX_REG);
/* Reset scan list queue */
outb(DAQP_COMMAND_RSTQ, dev->iobase + DAQP_CMD_REG);
outb(DAQP_CMD_RSTQ, dev->iobase + DAQP_CMD_REG);
/* Program one scan list entry */
daqp_ai_set_one_scanlist_entry(dev, insn->chanspec, 1);
/* Reset data FIFO (see page 28 of DAQP User's Manual) */
outb(DAQP_COMMAND_RSTF, dev->iobase + DAQP_CMD_REG);
outb(DAQP_CMD_RSTF, dev->iobase + DAQP_CMD_REG);
/* Set trigger - one-shot, internal */
outb(DAQP_CTRL_PACER_CLK_100KHZ | DAQP_CTRL_EOS_INT_ENA,
@@ -332,7 +335,7 @@ static int daqp_ai_insn_read(struct comedi_device *dev,
for (i = 0; i < insn->n; i++) {
/* Start conversion */
outb(DAQP_COMMAND_ARM | DAQP_COMMAND_FIFO_DATA,
outb(DAQP_CMD_ARM | DAQP_CMD_FIFO_DATA,
dev->iobase + DAQP_CMD_REG);
/* Wait for interrupt service routine to unblock completion */
@@ -477,7 +480,7 @@ static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
outb(0, dev->iobase + DAQP_AUX_REG);
/* Reset scan list queue */
outb(DAQP_COMMAND_RSTQ, dev->iobase + DAQP_CMD_REG);
outb(DAQP_CMD_RSTQ, dev->iobase + DAQP_CMD_REG);
/* Program pacer clock
*
@@ -595,7 +598,7 @@ static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
/* Reset data FIFO (see page 28 of DAQP User's Manual) */
outb(DAQP_COMMAND_RSTF, dev->iobase + DAQP_CMD_REG);
outb(DAQP_CMD_RSTF, dev->iobase + DAQP_CMD_REG);
/* Set FIFO threshold. First two bytes are near-empty
* threshold, which is unused; next two bytes are near-full
@@ -623,8 +626,7 @@ static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
devpriv->interrupt_mode = buffer;
/* Start conversion */
outb(DAQP_COMMAND_ARM | DAQP_COMMAND_FIFO_DATA,
dev->iobase + DAQP_CMD_REG);
outb(DAQP_CMD_ARM | DAQP_CMD_FIFO_DATA, dev->iobase + DAQP_CMD_REG);
return 0;
}