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-rw-r--r--drivers/staging/comedi/drivers/adv_pci1710.c108
1 files changed, 55 insertions, 53 deletions
diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c b/drivers/staging/comedi/drivers/adv_pci1710.c
index e6d9db865d3b..8fa3db304a6f 100644
--- a/drivers/staging/comedi/drivers/adv_pci1710.c
+++ b/drivers/staging/comedi/drivers/adv_pci1710.c
@@ -41,6 +41,9 @@
#define PCI171X_AD_DATA_REG 0x00 /* R: A/D data */
#define PCI171X_SOFTTRG_REG 0x00 /* W: soft trigger for A/D */
#define PCI171X_RANGE_REG 0x02 /* W: A/D gain/range register */
+#define PCI171X_RANGE_DIFF BIT(5)
+#define PCI171X_RANGE_UNI BIT(4)
+#define PCI171X_RANGE_GAIN(x) (((x) & 0x7) << 0)
#define PCI171X_MUX_REG 0x04 /* W: A/D multiplexor control */
#define PCI171X_STATUS_REG 0x06 /* R: status register */
#define PCI171X_STATUS_IRQ BIT(11) /* 1=IRQ occurred */
@@ -63,56 +66,47 @@
#define PCI171X_DO_REG 0x10 /* W: digital outputs */
#define PCI171X_TIMER_BASE 0x18 /* R/W: 8254 timer */
-static const struct comedi_lrange range_pci1710_3 = {
+static const struct comedi_lrange pci1710_ai_range = {
9, {
- BIP_RANGE(5),
- BIP_RANGE(2.5),
- BIP_RANGE(1.25),
- BIP_RANGE(0.625),
- BIP_RANGE(10),
- UNI_RANGE(10),
- UNI_RANGE(5),
- UNI_RANGE(2.5),
- UNI_RANGE(1.25)
+ BIP_RANGE(5), /* gain 1 (0x00) */
+ BIP_RANGE(2.5), /* gain 2 (0x01) */
+ BIP_RANGE(1.25), /* gain 4 (0x02) */
+ BIP_RANGE(0.625), /* gain 8 (0x03) */
+ BIP_RANGE(10), /* gain 0.5 (0x04) */
+ UNI_RANGE(10), /* gain 1 (0x00 | UNI) */
+ UNI_RANGE(5), /* gain 2 (0x01 | UNI) */
+ UNI_RANGE(2.5), /* gain 4 (0x02 | UNI) */
+ UNI_RANGE(1.25) /* gain 8 (0x03 | UNI) */
}
};
-static const char range_codes_pci1710_3[] = { 0x00, 0x01, 0x02, 0x03, 0x04,
- 0x10, 0x11, 0x12, 0x13 };
-
-static const struct comedi_lrange range_pci1710hg = {
+static const struct comedi_lrange pci1710hg_ai_range = {
12, {
- BIP_RANGE(5),
- BIP_RANGE(0.5),
- BIP_RANGE(0.05),
- BIP_RANGE(0.005),
- BIP_RANGE(10),
- BIP_RANGE(1),
- BIP_RANGE(0.1),
- BIP_RANGE(0.01),
- UNI_RANGE(10),
- UNI_RANGE(1),
- UNI_RANGE(0.1),
- UNI_RANGE(0.01)
+ BIP_RANGE(5), /* gain 1 (0x00) */
+ BIP_RANGE(0.5), /* gain 10 (0x01) */
+ BIP_RANGE(0.05), /* gain 100 (0x02) */
+ BIP_RANGE(0.005), /* gain 1000 (0x03) */
+ BIP_RANGE(10), /* gain 0.5 (0x04) */
+ BIP_RANGE(1), /* gain 5 (0x05) */
+ BIP_RANGE(0.1), /* gain 50 (0x06) */
+ BIP_RANGE(0.01), /* gain 500 (0x07) */
+ UNI_RANGE(10), /* gain 1 (0x00 | UNI) */
+ UNI_RANGE(1), /* gain 10 (0x01 | UNI) */
+ UNI_RANGE(0.1), /* gain 100 (0x02 | UNI) */
+ UNI_RANGE(0.01) /* gain 1000 (0x03 | UNI) */
}
};
-static const char range_codes_pci1710hg[] = { 0x00, 0x01, 0x02, 0x03, 0x04,
- 0x05, 0x06, 0x07, 0x10, 0x11,
- 0x12, 0x13 };
-
-static const struct comedi_lrange range_pci17x1 = {
+static const struct comedi_lrange pci1711_ai_range = {
5, {
- BIP_RANGE(10),
- BIP_RANGE(5),
- BIP_RANGE(2.5),
- BIP_RANGE(1.25),
- BIP_RANGE(0.625)
+ BIP_RANGE(10), /* gain 1 (0x00) */
+ BIP_RANGE(5), /* gain 2 (0x01) */
+ BIP_RANGE(2.5), /* gain 4 (0x02) */
+ BIP_RANGE(1.25), /* gain 8 (0x03) */
+ BIP_RANGE(0.625) /* gain 16 (0x04) */
}
};
-static const char range_codes_pci17x1[] = { 0x00, 0x01, 0x02, 0x03, 0x04 };
-
static const struct comedi_lrange pci171x_ao_range = {
2, {
UNI_RANGE(5),
@@ -132,7 +126,6 @@ struct boardtype {
const char *name; /* board name */
int n_aichan; /* num of A/D chans */
const struct comedi_lrange *rangelist_ai; /* rangelist for A/D */
- const char *rangecode_ai; /* range codes for programming */
unsigned int is_pci1713:1;
unsigned int has_large_fifo:1; /* 4K or 1K FIFO */
unsigned int has_diff_ai:1;
@@ -144,8 +137,7 @@ static const struct boardtype boardtypes[] = {
[BOARD_PCI1710] = {
.name = "pci1710",
.n_aichan = 16,
- .rangelist_ai = &range_pci1710_3,
- .rangecode_ai = range_codes_pci1710_3,
+ .rangelist_ai = &pci1710_ai_range,
.has_large_fifo = 1,
.has_diff_ai = 1,
.has_ao = 1,
@@ -154,8 +146,7 @@ static const struct boardtype boardtypes[] = {
[BOARD_PCI1710HG] = {
.name = "pci1710hg",
.n_aichan = 16,
- .rangelist_ai = &range_pci1710hg,
- .rangecode_ai = range_codes_pci1710hg,
+ .rangelist_ai = &pci1710hg_ai_range,
.has_large_fifo = 1,
.has_diff_ai = 1,
.has_ao = 1,
@@ -164,16 +155,14 @@ static const struct boardtype boardtypes[] = {
[BOARD_PCI1711] = {
.name = "pci1711",
.n_aichan = 16,
- .rangelist_ai = &range_pci17x1,
- .rangecode_ai = range_codes_pci17x1,
+ .rangelist_ai = &pci1711_ai_range,
.has_ao = 1,
.has_di_do = 1,
},
[BOARD_PCI1713] = {
.name = "pci1713",
.n_aichan = 32,
- .rangelist_ai = &range_pci1710_3,
- .rangecode_ai = range_codes_pci1710_3,
+ .rangelist_ai = &pci1710_ai_range,
.is_pci1713 = 1,
.has_large_fifo = 1,
.has_diff_ai = 1,
@@ -181,8 +170,7 @@ static const struct boardtype boardtypes[] = {
[BOARD_PCI1731] = {
.name = "pci1731",
.n_aichan = 16,
- .rangelist_ai = &range_pci17x1,
- .rangecode_ai = range_codes_pci17x1,
+ .rangelist_ai = &pci1711_ai_range,
.has_di_do = 1,
},
};
@@ -196,6 +184,7 @@ struct pci1710_private {
unsigned int act_chanlist[32]; /* list of scanned channel */
unsigned char saved_seglen; /* len of the non-repeating chanlist */
unsigned char da_ranges; /* copy of D/A outpit range register */
+ unsigned char unipolar_gain; /* adjust for unipolar gain codes */
};
static int pci171x_ai_check_chanlist(struct comedi_device *dev,
@@ -270,7 +259,6 @@ static void pci171x_ai_setup_chanlist(struct comedi_device *dev,
unsigned int n_chan,
unsigned int seglen)
{
- const struct boardtype *board = dev->board_ptr;
struct pci1710_private *devpriv = dev->private;
unsigned int first_chan = CR_CHAN(chanlist[0]);
unsigned int last_chan = CR_CHAN(chanlist[seglen - 1]);
@@ -280,11 +268,15 @@ static void pci171x_ai_setup_chanlist(struct comedi_device *dev,
unsigned int chan = CR_CHAN(chanlist[i]);
unsigned int range = CR_RANGE(chanlist[i]);
unsigned int aref = CR_AREF(chanlist[i]);
- unsigned int rangeval;
+ unsigned int rangeval = 0;
- rangeval = board->rangecode_ai[range];
if (aref == AREF_DIFF)
- rangeval |= 0x0020;
+ rangeval |= PCI171X_RANGE_DIFF;
+ if (comedi_range_is_unipolar(s, range)) {
+ rangeval |= PCI171X_RANGE_UNI;
+ range -= devpriv->unipolar_gain;
+ }
+ rangeval |= PCI171X_RANGE_GAIN(range);
/* select channel and set range */
outw(chan | (chan << 8), dev->iobase + PCI171X_MUX_REG);
@@ -758,6 +750,7 @@ static int pci1710_auto_attach(struct comedi_device *dev,
struct pci1710_private *devpriv;
struct comedi_subdevice *s;
int ret, subdev, n_subdevices;
+ int i;
if (context < ARRAY_SIZE(boardtypes))
board = &boardtypes[context];
@@ -823,6 +816,15 @@ static int pci1710_auto_attach(struct comedi_device *dev,
s->do_cmd = pci171x_ai_cmd;
s->cancel = pci171x_ai_cancel;
}
+
+ /* find the value needed to adjust for unipolar gain codes */
+ for (i = 0; i < s->range_table->length; i++) {
+ if (comedi_range_is_unipolar(s, i)) {
+ devpriv->unipolar_gain = i;
+ break;
+ }
+ }
+
subdev++;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 18:27:35 +0000