diff options
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/rtd520.c | 27 |
1 files changed, 7 insertions, 20 deletions
diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c index 0ae2d6175471..44c8712ed9e0 100644 --- a/drivers/staging/comedi/drivers/rtd520.c +++ b/drivers/staging/comedi/drivers/rtd520.c @@ -394,11 +394,8 @@ struct rtd_private { long ai_count; /* total transfer size (samples) */ int xfer_count; /* # to transfer data. 0->1/2FIFO */ int flags; /* flag event modes */ - - unsigned char chan_is_bipolar[RTD_MAX_CHANLIST / 8]; /* bit array */ - + DECLARE_BITMAP(chan_is_bipolar, RTD_MAX_CHANLIST); unsigned int ao_readback[2]; - unsigned fifosz; }; @@ -407,14 +404,6 @@ struct rtd_private { #define DMA0_ACTIVE 0x02 /* DMA0 is active */ #define DMA1_ACTIVE 0x04 /* DMA1 is active */ -/* Macros for accessing channel list bit array */ -#define CHAN_ARRAY_TEST(array, index) \ - (((array)[(index)/8] >> ((index) & 0x7)) & 0x1) -#define CHAN_ARRAY_SET(array, index) \ - (((array)[(index)/8] |= 1 << ((index) & 0x7))) -#define CHAN_ARRAY_CLEAR(array, index) \ - (((array)[(index)/8] &= ~(1 << ((index) & 0x7)))) - /* Given a desired period and the clock period (both in ns), return the proper counter value (divider-1). @@ -478,17 +467,17 @@ static unsigned short rtd_convert_chan_gain(struct comedi_device *dev, /* +-5 range */ r |= 0x000; r |= (range & 0x7) << 4; - CHAN_ARRAY_SET(devpriv->chan_is_bipolar, index); + __set_bit(index, devpriv->chan_is_bipolar); } else if (range < board->range_uni10) { /* +-10 range */ r |= 0x100; r |= ((range - board->range_bip10) & 0x7) << 4; - CHAN_ARRAY_SET(devpriv->chan_is_bipolar, index); + __set_bit(index, devpriv->chan_is_bipolar); } else { /* +10 range */ r |= 0x200; r |= ((range - board->range_uni10) & 0x7) << 4; - CHAN_ARRAY_CLEAR(devpriv->chan_is_bipolar, index); + __clear_bit(index, devpriv->chan_is_bipolar); } switch (aref) { @@ -619,7 +608,7 @@ static int rtd_ai_rinsn(struct comedi_device *dev, d = readw(devpriv->las1 + LAS1_ADC_FIFO); /*printk ("rtd520: Got 0x%x after %d usec\n", d, ii+1); */ d = d >> 3; /* low 3 bits are marker lines */ - if (CHAN_ARRAY_TEST(devpriv->chan_is_bipolar, 0)) + if (test_bit(0, devpriv->chan_is_bipolar)) /* convert to comedi unsigned data */ d = comedi_offset_munge(s, d); data[n] = d & s->maxdata; @@ -651,8 +640,7 @@ static int ai_read_n(struct comedi_device *dev, struct comedi_subdevice *s, d = readw(devpriv->las1 + LAS1_ADC_FIFO); d = d >> 3; /* low 3 bits are marker lines */ - if (CHAN_ARRAY_TEST(devpriv->chan_is_bipolar, - s->async->cur_chan)) + if (test_bit(s->async->cur_chan, devpriv->chan_is_bipolar)) /* convert to comedi unsigned data */ d = comedi_offset_munge(s, d); d &= s->maxdata; @@ -681,8 +669,7 @@ static int ai_read_dregs(struct comedi_device *dev, struct comedi_subdevice *s) } d = d >> 3; /* low 3 bits are marker lines */ - if (CHAN_ARRAY_TEST(devpriv->chan_is_bipolar, - s->async->cur_chan)) + if (test_bit(s->async->cur_chan, devpriv->chan_is_bipolar)) /* convert to comedi unsigned data */ d = comedi_offset_munge(s, d); d &= s->maxdata; |