---
drivers/staging/comedi/drivers/dt282x.c | 225 +++++++++++++++----------------
1 files changed, 107 insertions(+), 118 deletions(-)
diff --git a/drivers/staging/comedi/drivers/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c
index e548763..fd8728c 100644
--- a/drivers/staging/comedi/drivers/dt282x.c
+++ b/drivers/staging/comedi/drivers/dt282x.c
@@ -45,9 +45,9 @@ Configuration options:
[7] - AO 1 jumpered for 0=straight binary, 1=2's complement
[8] - AI jumpered for 0=[-10,10]V, 1=[0,10], 2=[-5,5], 3=[0,5]
[9] - AO 0 jumpered for 0=[-10,10]V, 1=[0,10], 2=[-5,5], 3=[0,5],
- 4=[-2.5,2.5]
+ 4=[-2.5,2.5]
[10]- A0 1 jumpered for 0=[-10,10]V, 1=[0,10], 2=[-5,5], 3=[0,5],
- 4=[-2.5,2.5]
+ 4=[-2.5,2.5]
Notes:
- AO commands might be broken.
@@ -155,79 +155,58 @@ Notes:
#define DT2821_XCLK 0x0002 /* (R/W) external clock enable */
#define DT2821_BDINIT 0x0001 /* (W) initialize board */
-static const struct comedi_lrange range_dt282x_ai_lo_bipolar = { 4, {
- RANGE(-10,
- 10),
- RANGE(-5,
- 5),
- RANGE(-2.5,
- 2.5),
- RANGE
- (-1.25,
- 1.25)
- }
+static const struct comedi_lrange range_dt282x_ai_lo_bipolar = {
+ 4, {
+ RANGE(-10, 10),
+ RANGE(-5, 5),
+ RANGE(-2.5, 2.5),
+ RANGE(-1.25, 1.25)
+ }
};
-static const struct comedi_lrange range_dt282x_ai_lo_unipolar = { 4, {
- RANGE(0,
- 10),
- RANGE(0,
- 5),
- RANGE(0,
- 2.5),
- RANGE(0,
- 1.25)
- }
+static const struct comedi_lrange range_dt282x_ai_lo_unipolar = {
+ 4, {
+ RANGE(0, 10),
+ RANGE(0, 5),
+ RANGE(0, 2.5),
+ RANGE(0, 1.25)
+ }
};
-static const struct comedi_lrange range_dt282x_ai_5_bipolar = { 4, {
- RANGE(-5,
- 5),
- RANGE(-2.5,
- 2.5),
- RANGE(-1.25,
- 1.25),
- RANGE
- (-0.625,
- 0.625),
- }
+static const struct comedi_lrange range_dt282x_ai_5_bipolar = {
+ 4, {
+ RANGE(-5, 5),
+ RANGE(-2.5, 2.5),
+ RANGE(-1.25, 1.25),
+ RANGE(-0.625, 0.625)
+ }
};
-static const struct comedi_lrange range_dt282x_ai_5_unipolar = { 4, {
- RANGE(0,
- 5),
- RANGE(0,
- 2.5),
- RANGE(0,
- 1.25),
- RANGE(0,
- 0.625),
- }
+static const struct comedi_lrange range_dt282x_ai_5_unipolar = {
+ 4, {
+ RANGE(0, 5),
+ RANGE(0, 2.5),
+ RANGE(0, 1.25),
+ RANGE(0, 0.625),
+ }
};
-static const struct comedi_lrange range_dt282x_ai_hi_bipolar = { 4, {
- RANGE(-10,
- 10),
- RANGE(-1,
- 1),
- RANGE(-0.1,
- 0.1),
- RANGE
- (-0.02,
- 0.02)
- }
+static const struct comedi_lrange range_dt282x_ai_hi_bipolar = {
+ 4, {
+ RANGE(-10, 10),
+ RANGE(-1, 1),
+ RANGE(-0.1, 0.1),
+ RANGE(-0.02, 0.02)
+ }
};
-static const struct comedi_lrange range_dt282x_ai_hi_unipolar = { 4, {
- RANGE(0,
- 10),
- RANGE(0,
- 1),
- RANGE(0,
- 0.1),
- RANGE(0,
- 0.02)
- }
+static const struct comedi_lrange range_dt282x_ai_hi_unipolar = {
+ 4, {
+ RANGE(0, 10),
+ RANGE(0, 1),
+ RANGE(0, 0.1),
+ RANGE(0, 0.02)
+ }
};
struct dt282x_board {
@@ -370,7 +349,7 @@ static const struct dt282x_board boardtypes[] = {
},
};
-#define n_boardtypes sizeof(boardtypes)/sizeof(struct dt282x_board)
+#define n_boardtypes (sizeof(boardtypes)/sizeof(struct dt282x_board))
#define this_board ((const struct dt282x_board *)dev->board_ptr)
struct dt282x_private {
@@ -411,21 +390,25 @@ struct dt282x_private {
#define update_adcsr(a) outw(devpriv->adcsr|(a), dev->iobase+DT2821_ADCSR)
#define mux_busy() (inw(dev->iobase+DT2821_ADCSR)&DT2821_MUXBUSY)
#define ad_done() (inw(dev->iobase+DT2821_ADCSR)&DT2821_ADDONE)
-#define update_supcsr(a) outw(devpriv->supcsr|(a), dev->iobase+DT2821_SUPCSR)
+#define update_supcsr(a) outw(devpriv->supcsr|(a), dev->iobase+DT2821_SUPCSR)
/*
* danger! macro abuse... a is the expression to wait on, and b is
* the statement(s) to execute if it doesn't happen.
*/
-#define wait_for(a, b) \
- do{ \
- int _i; \
- for (_i=0;_i<DT2821_TIMEOUT;_i++){ \
- if (a){_i=0;break;} \
- udelay(5); \
- } \
- if (_i){b} \
- }while (0)
+#define wait_for(a, b) \
+ do { \
+ int _i; \
+ for (_i = 0; _i < DT2821_TIMEOUT; _i++) { \
+ if (a) { \
+ _i = 0; \
+ break; \
+ } \
+ udelay(5); \
+ } \
+ if (_i) \
+ b \
+ } while (0)
static int dt282x_attach(struct comedi_device *dev,
struct comedi_devconfig *it);
@@ -462,18 +445,16 @@ static void dt282x_munge(struct comedi_device *dev, short *buf,
unsigned short sign = 1 << (boardtype.adbits - 1);
int n;
- if (devpriv->ad_2scomp) {
+ if (devpriv->ad_2scomp)
sign = 1 << (boardtype.adbits - 1);
- } else {
+ else
sign = 0;
- }
if (nbytes % 2)
comedi_error(dev, "bug! odd number of bytes from dma xfer");
n = nbytes / 2;
- for (i = 0; i < n; i++) {
+ for (i = 0; i < n; i++)
buf[i] = (buf[i] & mask) ^ sign;
- }
}
static void dt282x_ao_dma_interrupt(struct comedi_device *dev)
@@ -486,7 +467,7 @@ static void dt282x_ao_dma_interrupt(struct comedi_device *dev)
update_supcsr(DT2821_CLRDMADNE);
if (!s->async->prealloc_buf) {
- printk("async->data disappeared. dang!\n");
+ printk(KERN_ERR "async->data disappeared. dang!\n");
return;
}
@@ -499,7 +480,7 @@ static void dt282x_ao_dma_interrupt(struct comedi_device *dev)
size = cfc_read_array_from_buffer(s, ptr, devpriv->dma_maxsize);
if (size == 0) {
- printk("dt282x: AO underrun\n");
+ printk(KERN_ERR "dt282x: AO underrun\n");
dt282x_ao_cancel(dev, s);
s->async->events |= COMEDI_CB_OVERFLOW;
return;
@@ -519,7 +500,7 @@ static void dt282x_ai_dma_interrupt(struct comedi_device *dev)
update_supcsr(DT2821_CLRDMADNE);
if (!s->async->prealloc_buf) {
- printk("async->data disappeared. dang!\n");
+ printk(KERN_ERR "async->data disappeared. dang!\n");
return;
}
@@ -540,7 +521,7 @@ static void dt282x_ai_dma_interrupt(struct comedi_device *dev)
devpriv->nread -= size / 2;
if (devpriv->nread < 0) {
- printk("dt282x: off by one\n");
+ printk(KERN_INFO "dt282x: off by one\n");
devpriv->nread = 0;
}
if (!devpriv->nread) {
@@ -651,7 +632,7 @@ static irqreturn_t dt282x_interrupt(int irq, void *d)
static int warn = 5;
if (--warn <= 0) {
disable_irq(dev->irq);
- printk("disabling irq\n");
+ printk(KERN_INFO "disabling irq\n");
}
#endif
comedi_error(dev, "D/A error");
@@ -666,13 +647,13 @@ static irqreturn_t dt282x_interrupt(int irq, void *d)
data = (short)inw(dev->iobase + DT2821_ADDAT);
data &= (1 << boardtype.adbits) - 1;
- if (devpriv->ad_2scomp) {
+
+ if (devpriv->ad_2scomp)
data ^= 1 << (boardtype.adbits - 1);
- }
ret = comedi_buf_put(s->async, data);
- if (ret == 0) {
+
+ if (ret == 0)
s->async->events |= COMEDI_CB_OVERFLOW;
- }
devpriv->nread--;
if (!devpriv->nread) {
@@ -685,7 +666,8 @@ static irqreturn_t dt282x_interrupt(int irq, void *d)
}
#endif
comedi_event(dev, s);
- /* printk("adcsr=0x%02x dacsr-0x%02x supcsr=0x%02x\n", adcsr, dacsr, supcsr); */
+ /* printk("adcsr=0x%02x dacsr-0x%02x supcsr=0x%02x\n",
+ adcsr, dacsr, supcsr); */
return IRQ_RETVAL(handled);
}
@@ -776,7 +758,10 @@ static int dt282x_ai_cmdtest(struct comedi_device *dev,
if (err)
return 1;
- /* step 2: make sure trigger sources are unique and mutually compatible */
+ /*
+ * step 2: make sure trigger sources are unique
+ * and mutually compatible
+ */
/* note that mutual compatibility is not an issue here */
if (cmd->scan_begin_src != TRIG_FOLLOW &&
@@ -859,7 +844,8 @@ static int dt282x_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
if (devpriv->usedma == 0) {
comedi_error(dev,
- "driver requires 2 dma channels to execute command");
+ "driver requires 2 dma channels"
+ " to execute command");
return -EIO;
}
@@ -1049,7 +1035,10 @@ static int dt282x_ao_cmdtest(struct comedi_device *dev,
if (err)
return 1;
- /* step 2: make sure trigger sources are unique and mutually compatible */
+ /*
+ * step 2: make sure trigger sources are unique
+ * and mutually compatible
+ */
/* note that mutual compatibility is not an issue here */
if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
@@ -1064,7 +1053,7 @@ static int dt282x_ao_cmdtest(struct comedi_device *dev,
cmd->start_arg = 0;
err++;
}
- if (cmd->scan_begin_arg < 5000 /* XXX unknown */ ) {
+ if (cmd->scan_begin_arg < 5000 /* XXX unknown */) {
cmd->scan_begin_arg = 5000;
err++;
}
@@ -1115,7 +1104,7 @@ static int dt282x_ao_inttrig(struct comedi_device *dev,
size = cfc_read_array_from_buffer(s, devpriv->dma[0].buf,
devpriv->dma_maxsize);
if (size == 0) {
- printk("dt282x: AO underrun\n");
+ printk(KERN_ERR "dt282x: AO underrun\n");
return -EPIPE;
}
prep_ao_dma(dev, 0, size);
@@ -1123,7 +1112,7 @@ static int dt282x_ao_inttrig(struct comedi_device *dev,
size = cfc_read_array_from_buffer(s, devpriv->dma[1].buf,
devpriv->dma_maxsize);
if (size == 0) {
- printk("dt282x: AO underrun\n");
+ printk(KERN_ERR "dt282x: AO underrun\n");
return -EPIPE;
}
prep_ao_dma(dev, 1, size);
@@ -1141,7 +1130,8 @@ static int dt282x_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
if (devpriv->usedma == 0) {
comedi_error(dev,
- "driver requires 2 dma channels to execute command");
+ "driver requires 2 dma channels"
+ " to execute command");
return -EIO;
}
@@ -1262,7 +1252,8 @@ static const struct comedi_lrange *opt_ao_range_lkup(int x)
return ao_range_table[x];
}
-enum { opt_iobase = 0, opt_irq, opt_dma1, opt_dma2, /* i/o base, irq, dma channels */
+enum { /* i/o base, irq, dma channels */
+ opt_iobase = 0, opt_irq, opt_dma1, opt_dma2,
opt_diff, /* differential */
opt_ai_twos, opt_ao0_twos, opt_ao1_twos, /* twos comp */
opt_ai_range, opt_ao0_range, opt_ao1_range, /* range */
@@ -1295,9 +1286,9 @@ static int dt282x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
if (!iobase)
iobase = 0x240;
- printk("comedi%d: dt282x: 0x%04lx", dev->minor, iobase);
+ printk(KERN_INFO "comedi%d: dt282x: 0x%04lx", dev->minor, iobase);
if (!request_region(iobase, DT2821_SIZE, "dt282x")) {
- printk(" I/O port conflict\n");
+ printk(KERN_INFO " I/O port conflict\n");
return -EBUSY;
}
dev->iobase = iobase;
@@ -1305,7 +1296,7 @@ static int dt282x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
outw(DT2821_BDINIT, dev->iobase + DT2821_SUPCSR);
i = inw(dev->iobase + DT2821_ADCSR);
#ifdef DEBUG
- printk(" fingerprint=%x,%x,%x,%x,%x",
+ printk(KERN_DEBUG " fingerprint=%x,%x,%x,%x,%x",
inw(dev->iobase + DT2821_ADCSR),
inw(dev->iobase + DT2821_CHANCSR),
inw(dev->iobase + DT2821_DACSR),
@@ -1323,7 +1314,7 @@ static int dt282x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
!= DT2821_SUPCSR_VAL) ||
((inw(dev->iobase + DT2821_TMRCTR) & DT2821_TMRCTR_MASK)
!= DT2821_TMRCTR_VAL)) {
- printk(" board not found");
+ printk(KERN_ERR " board not found");
return -EIO;
}
/* should do board test */
@@ -1344,26 +1335,25 @@ static int dt282x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
irq = probe_irq_off(irqs);
restore_flags(flags);
- if (0 /* error */ ) {
- printk(" error probing irq (bad)");
- }
+ if (0 /* error */)
+ printk(KERN_ERR " error probing irq (bad)");
}
#endif
if (irq > 0) {
- printk(" ( irq = %d )", irq);
+ printk(KERN_INFO " ( irq = %d )", irq);
ret = request_irq(irq, dt282x_interrupt, 0, "dt282x", dev);
if (ret < 0) {
- printk(" failed to get irq\n");
+ printk(KERN_ERR " failed to get irq\n");
return -EIO;
}
dev->irq = irq;
} else if (irq == 0) {
- printk(" (no irq)");
+ printk(KERN_INFO " (no irq)");
} else {
#if 0
- printk(" (probe returned multiple irqs--bad)");
+ printk(KERN_INFO " (probe returned multiple irqs--bad)");
#else
- printk(" (irq probe not implemented)");
+ printk(KERN_INFO " (irq probe not implemented)");
#endif
}
@@ -1435,16 +1425,15 @@ static int dt282x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
s->maxdata = 1;
s->range_table = &range_digital;
- printk("\n");
+ printk(KERN_INFO "\n");
return 0;
}
static void free_resources(struct comedi_device *dev)
{
- if (dev->irq) {
+ if (dev->irq)
free_irq(dev->irq, dev);
- }
if (dev->iobase)
release_region(dev->iobase, DT2821_SIZE);
if (dev->private) {
@@ -1461,7 +1450,7 @@ static void free_resources(struct comedi_device *dev)
static int dt282x_detach(struct comedi_device *dev)
{
- printk("comedi%d: dt282x: remove\n", dev->minor);
+ printk(KERN_INFO "comedi%d: dt282x: remove\n", dev->minor);
free_resources(dev);
@@ -1475,7 +1464,7 @@ static int dt282x_grab_dma(struct comedi_device *dev, int dma1, int dma2)
devpriv->usedma = 0;
if (!dma1 && !dma2) {
- printk(" (no dma)");
+ printk(KERN_ERR " (no dma)");
return 0;
}
@@ -1503,11 +1492,11 @@ static int dt282x_grab_dma(struct comedi_device *dev, int dma1, int dma2)
devpriv->dma[0].buf = (void *)__get_free_page(GFP_KERNEL | GFP_DMA);
devpriv->dma[1].buf = (void *)__get_free_page(GFP_KERNEL | GFP_DMA);
if (!devpriv->dma[0].buf || !devpriv->dma[1].buf) {
- printk(" can't get DMA memory");
+ printk(KERN_ERR " can't get DMA memory");
return -ENOMEM;
}
- printk(" (dma=%d,%d)", dma1, dma2);
+ printk(KERN_INFO " (dma=%d,%d)", dma1, dma2);
devpriv->usedma = 1;
--
1.7.0.4
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