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staging: comedi: icp_multi: tidy up the DAC command/status register bits 

For aesthetics, rename these bit defines so they are associated with
the register and use the BIT macro to define them.

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 2015-10-07 14:52:35 -07:00 committed by Greg Kroah-Hartman
parent 456031d604
commit 01544d6e0e
1 changed files with 10 additions and 12 deletions
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22
drivers/staging/comedi/drivers/icp_multi.c
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@ -56,7 +56,11 @@
#define ICP_MULTI_ADC_CSR_RA BIT(5) /* Input range 0 = 5V, 1 = 10V */
#define ICP_MULTI_ADC_CSR_DI BIT(6) /* Input mode 1 = differential */
#define ICP_MULTI_AI 2 /* R: Analogue input data */
#define ICP_MULTI_DAC_CSR 4 /* R/W: DAC command/status register */
#define ICP_MULTI_DAC_CSR 0x04 /* R/W: DAC command/status register */
#define ICP_MULTI_DAC_CSR_ST BIT(0) /* Start DAC */
#define ICP_MULTI_DAC_CSR_BSY BIT(0) /* DAC busy */
#define ICP_MULTI_DAC_CSR_BI BIT(4) /* Bipolar output range */
#define ICP_MULTI_DAC_CSR_RA BIT(5) /* Output range 0 = 5V, 1 = 10V */
#define ICP_MULTI_AO 6 /* R/W: Analogue output data */
#define ICP_MULTI_DI 8 /* R/W: Digital inputs */
#define ICP_MULTI_DO 0x0A /* R/W: Digital outputs */
@ -67,12 +71,6 @@
#define ICP_MULTI_CNTR2 0x14 /* R/W: Counter 2 */
#define ICP_MULTI_CNTR3 0x16 /* R/W: Counter 3 */
/* Define bits from DAC command/status register */
#define DAC_ST 0x0001 /* Start DAC */
#define DAC_BSY 0x0001 /* DAC busy */
#define DAC_BI 0x0010 /* Bipolar input range 1 = bipolar */
#define DAC_RA 0x0020 /* Input range 0 = 5V, 1 = 10V */
/* Define bits from interrupt enable/status registers */
#define ADC_READY 0x0001 /* A/d conversion ready interrupt */
#define DAC_READY 0x0002 /* D/a conversion ready interrupt */
@ -231,7 +229,7 @@ static int icp_multi_ao_eoc(struct comedi_device *dev,
unsigned int status;
status = readw(dev->mmio + ICP_MULTI_DAC_CSR);
if ((status & DAC_BSY) == 0)
if ((status & ICP_MULTI_DAC_CSR_BSY) == 0)
return 0;
return -EBUSY;
}
@ -288,10 +286,10 @@ static int icp_multi_ao_insn_write(struct comedi_device *dev,
writew(val, dev->mmio + ICP_MULTI_AO);
/* Set DAC_ST bit to write the data to selected channel */
devpriv->DacCmdStatus |= DAC_ST;
/* Set start conversion bit to write data to channel */
devpriv->DacCmdStatus |= ICP_MULTI_DAC_CSR_ST;
writew(devpriv->DacCmdStatus, dev->mmio + ICP_MULTI_DAC_CSR);
devpriv->DacCmdStatus &= ~DAC_ST;
devpriv->DacCmdStatus &= ~ICP_MULTI_DAC_CSR_ST;
s->readback[chan] = val;
}
@ -426,7 +424,7 @@ static int icp_multi_reset(struct comedi_device *dev)
writew(0, dev->mmio + ICP_MULTI_AO);
/* Set start conversion bit */
devpriv->DacCmdStatus |= DAC_ST;
devpriv->DacCmdStatus |= ICP_MULTI_DAC_CSR_ST;
/* Output to command / status register */
writew(devpriv->DacCmdStatus, dev->mmio + ICP_MULTI_DAC_CSR);