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authorIan Abbott <abbotti@mev.co.uk>2015-02-27 18:52:08 +0000
committerBen Hutchings <ben@decadent.org.uk>2015-03-06 00:39:19 +0000
commit1c41da27b53bca2b97b24653b55dd690e3bfd8bc (patch)
tree4ea589f8558a7b2449e9d1367da3cd88602851b3
parent01c4de7a34c024d06309b5607c0374ae9855d0d3 (diff)
downloadlinux-linaro-stable-1c41da27b53bca2b97b24653b55dd690e3bfd8bc.tar.gz
staging: comedi: cb_pcidas64: fix incorrect AI range code handling
commit be8e89087ec2d2c8a1ad1e3db64bf4efdfc3c298 upstream. The hardware range code values and list of valid ranges for the AI subdevice is incorrect for several supported boards. The hardware range code values for all boards except PCI-DAS4020/12 is determined by calling `ai_range_bits_6xxx()` based on the maximum voltage of the range and whether it is bipolar or unipolar, however it only returns the correct hardware range code for the PCI-DAS60xx boards. For PCI-DAS6402/16 (and /12) it returns the wrong code for the unipolar ranges. For PCI-DAS64/Mx/16 it returns the wrong code for all the ranges and the comedi range table is incorrect. Change `ai_range_bits_6xxx()` to use a look-up table pointed to by new member `ai_range_codes` of `struct pcidas64_board` to map the comedi range table indices to the hardware range codes. Use a new comedi range table for the PCI-DAS64/Mx/16 boards (and the commented out variants). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
-rw-r--r--drivers/staging/comedi/drivers/cb_pcidas64.c123
1 files changed, 75 insertions, 48 deletions
diff --git a/drivers/staging/comedi/drivers/cb_pcidas64.c b/drivers/staging/comedi/drivers/cb_pcidas64.c
index 1e324198996c..c651c7662c57 100644
--- a/drivers/staging/comedi/drivers/cb_pcidas64.c
+++ b/drivers/staging/comedi/drivers/cb_pcidas64.c
@@ -424,6 +424,29 @@ static const struct comedi_lrange ai_ranges_64xx = {
}
};
+static const uint8_t ai_range_code_64xx[8] = {
+ 0x0, 0x1, 0x2, 0x3, /* bipolar 10, 5, 2,5, 1.25 */
+ 0x8, 0x9, 0xa, 0xb /* unipolar 10, 5, 2.5, 1.25 */
+};
+
+/* analog input ranges for 64-Mx boards */
+static const struct comedi_lrange ai_ranges_64_mx = {
+ 7, {
+ BIP_RANGE(5),
+ BIP_RANGE(2.5),
+ BIP_RANGE(1.25),
+ BIP_RANGE(0.625),
+ UNI_RANGE(5),
+ UNI_RANGE(2.5),
+ UNI_RANGE(1.25)
+ }
+};
+
+static const uint8_t ai_range_code_64_mx[7] = {
+ 0x0, 0x1, 0x2, 0x3, /* bipolar 5, 2.5, 1.25, 0.625 */
+ 0x9, 0xa, 0xb /* unipolar 5, 2.5, 1.25 */
+};
+
/* analog input ranges for 60xx boards */
static const struct comedi_lrange ai_ranges_60xx = {
4,
@@ -435,6 +458,10 @@ static const struct comedi_lrange ai_ranges_60xx = {
}
};
+static const uint8_t ai_range_code_60xx[4] = {
+ 0x0, 0x1, 0x4, 0x7 /* bipolar 10, 5, 0.5, 0.05 */
+};
+
/* analog input ranges for 6030, etc boards */
static const struct comedi_lrange ai_ranges_6030 = {
14,
@@ -456,6 +483,11 @@ static const struct comedi_lrange ai_ranges_6030 = {
}
};
+static const uint8_t ai_range_code_6030[14] = {
+ 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, /* bip 10, 5, 2, 1, 0.5, 0.2, 0.1 */
+ 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf /* uni 10, 5, 2, 1, 0.5, 0.2, 0.1 */
+};
+
/* analog input ranges for 6052, etc boards */
static const struct comedi_lrange ai_ranges_6052 = {
15,
@@ -478,6 +510,11 @@ static const struct comedi_lrange ai_ranges_6052 = {
}
};
+static const uint8_t ai_range_code_6052[15] = {
+ 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, /* bipolar 10 ... 0.05 */
+ 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf /* unipolar 10 ... 0.1 */
+};
+
/* analog input ranges for 4020 board */
static const struct comedi_lrange ai_ranges_4020 = {
2,
@@ -562,6 +599,7 @@ struct pcidas64_board {
int ai_bits; /* analog input resolution */
int ai_speed; /* fastest conversion period in ns */
const struct comedi_lrange *ai_range_table;
+ const uint8_t *ai_range_code;
int ao_nchan; /* number of analog out channels */
int ao_bits; /* analog output resolution */
int ao_scan_speed; /* analog output speed (for a scan, not conversion) */
@@ -620,6 +658,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
.ai_range_table = &ai_ranges_64xx,
+ .ai_range_code = ai_range_code_64xx,
.ao_range_table = &ao_ranges_64xx,
.ao_range_code = ao_range_code_64xx,
.ai_fifo = &ai_fifo_64xx,
@@ -636,6 +675,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
.ai_range_table = &ai_ranges_64xx,
+ .ai_range_code = ai_range_code_64xx,
.ao_range_table = &ao_ranges_64xx,
.ao_range_code = ao_range_code_64xx,
.ai_fifo = &ai_fifo_64xx,
@@ -651,7 +691,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_bits = 16,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ao_range_table = &ao_ranges_64xx,
.ao_range_code = ao_range_code_64xx,
.ai_fifo = &ai_fifo_64xx,
@@ -667,7 +708,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_bits = 16,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ao_range_table = &ao_ranges_64xx,
.ao_range_code = ao_range_code_64xx,
.ai_fifo = &ai_fifo_64xx,
@@ -683,7 +725,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_bits = 16,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ao_range_table = &ao_ranges_64xx,
.ao_range_code = ao_range_code_64xx,
.ai_fifo = &ai_fifo_64xx,
@@ -699,6 +742,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_bits = 16,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_60xx,
+ .ai_range_code = ai_range_code_60xx,
.ao_range_table = &ao_ranges_60xx,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -715,6 +759,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 100000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_60xx,
+ .ai_range_code = ai_range_code_60xx,
.ao_range_table = &ao_ranges_60xx,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -730,6 +775,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 100000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_60xx,
+ .ai_range_code = ai_range_code_60xx,
.ao_range_table = &ao_ranges_60xx,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -746,6 +792,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 100000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_60xx,
+ .ai_range_code = ai_range_code_60xx,
.ao_range_table = &ao_ranges_60xx,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -762,6 +809,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 10000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6030,
+ .ai_range_code = ai_range_code_6030,
.ao_range_table = &ao_ranges_6030,
.ao_range_code = ao_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
@@ -778,6 +826,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 10000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6030,
+ .ai_range_code = ai_range_code_6030,
.ao_range_table = &ao_ranges_6030,
.ao_range_code = ao_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
@@ -792,6 +841,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 0,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6030,
+ .ai_range_code = ai_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
.has_8255 = 0,
},
@@ -804,6 +854,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 0,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6030,
+ .ai_range_code = ai_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
.has_8255 = 0,
},
@@ -817,6 +868,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 0,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_60xx,
+ .ai_range_code = ai_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
.has_8255 = 0,
},
@@ -831,6 +883,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 100000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_60xx,
+ .ai_range_code = ai_range_code_60xx,
.ao_range_table = &ao_ranges_60xx,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -847,6 +900,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 100000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_60xx,
+ .ai_range_code = ai_range_code_60xx,
.ao_range_table = &ao_ranges_60xx,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -863,6 +917,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 1000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6052,
+ .ai_range_code = ai_range_code_6052,
.ao_range_table = &ao_ranges_6030,
.ao_range_code = ao_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
@@ -879,6 +934,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 3333,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6052,
+ .ai_range_code = ai_range_code_6052,
.ao_range_table = &ao_ranges_6030,
.ao_range_code = ao_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
@@ -895,6 +951,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 1000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6052,
+ .ai_range_code = ai_range_code_6052,
.ao_range_table = &ao_ranges_6030,
.ao_range_code = ao_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
@@ -911,6 +968,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 1000,
.layout = LAYOUT_60XX,
.ai_range_table = &ai_ranges_6052,
+ .ai_range_code = ai_range_code_6052,
.ao_range_table = &ao_ranges_6030,
.ao_range_code = ao_range_code_6030,
.ai_fifo = &ai_fifo_60xx,
@@ -943,6 +1001,7 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
.ai_range_table = &ai_ranges_64xx,
+ .ai_range_code = ai_range_code_64xx,
.ai_fifo = ai_fifo_64xx,
.has_8255 = 1,
},
@@ -955,7 +1014,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 0,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ai_fifo = ai_fifo_64xx,
.has_8255 = 1,
},
@@ -968,7 +1028,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 0,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ai_fifo = ai_fifo_64xx,
.has_8255 = 1,
},
@@ -981,7 +1042,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 0,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ai_fifo = ai_fifo_64xx,
.has_8255 = 1,
},
@@ -994,7 +1056,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 2,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ai_fifo = ai_fifo_64xx,
.has_8255 = 1,
},
@@ -1007,7 +1070,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 2,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ai_fifo = ai_fifo_64xx,
.has_8255 = 1,
},
@@ -1020,7 +1084,8 @@ static const struct pcidas64_board pcidas64_boards[] = {
.ao_nchan = 2,
.ao_scan_speed = 10000,
.layout = LAYOUT_64XX,
- .ai_range_table = &ai_ranges_64xx,
+ .ai_range_table = &ai_ranges_64_mx,
+ .ai_range_code = ai_range_code_64_mx,
.ai_fifo = ai_fifo_64xx,
.has_8255 = 1,
},
@@ -1258,45 +1323,7 @@ module_exit(driver_cb_pcidas_cleanup_module);
static unsigned int ai_range_bits_6xxx(const struct comedi_device *dev,
unsigned int range_index)
{
- const struct comedi_krange *range =
- &board(dev)->ai_range_table->range[range_index];
- unsigned int bits = 0;
-
- switch (range->max) {
- case 10000000:
- bits = 0x000;
- break;
- case 5000000:
- bits = 0x100;
- break;
- case 2000000:
- case 2500000:
- bits = 0x200;
- break;
- case 1000000:
- case 1250000:
- bits = 0x300;
- break;
- case 500000:
- bits = 0x400;
- break;
- case 200000:
- case 250000:
- bits = 0x500;
- break;
- case 100000:
- bits = 0x600;
- break;
- case 50000:
- bits = 0x700;
- break;
- default:
- comedi_error(dev, "bug! in ai_range_bits_6xxx");
- break;
- }
- if (range->min == 0)
- bits += 0x900;
- return bits;
+ return board(dev)->ai_range_code[range_index] << 8;
}
static unsigned int hw_revision(const struct comedi_device *dev,