This is a note to let you know that I've just added the patch titled
staging: comedi: cb_pcidas64: fix incorrect AI range code handling
to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-next branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will also be merged in the next major kernel release
during the merge window.
If you have any questions about this process, please let me know.
>From be8e89087ec2d2c8a1ad1e3db64bf4efdfc3c298 Mon Sep 17 00:00:00 2001
From: Ian Abbott <abbotti@xxxxxxxxx>
Date: Mon, 19 Jan 2015 14:47:27 +0000
Subject: staging: comedi: cb_pcidas64: fix incorrect AI range code handling
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@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 3.18.x
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/cb_pcidas64.c | 122 ++++++++++++++++-----------
1 file changed, 75 insertions(+), 47 deletions(-)
diff --git a/drivers/staging/comedi/drivers/cb_pcidas64.c b/drivers/staging/comedi/drivers/cb_pcidas64.c
index eddb7ace43df..569310a9135b 100644
--- a/drivers/staging/comedi/drivers/cb_pcidas64.c
+++ b/drivers/staging/comedi/drivers/cb_pcidas64.c
@@ -439,6 +439,29 @@ 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, {
@@ -449,6 +472,10 @@ 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, {
@@ -469,6 +496,11 @@ 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, {
@@ -490,6 +522,11 @@ 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, {
@@ -593,6 +630,7 @@ 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 scan speed */
@@ -651,6 +689,7 @@ 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,
@@ -666,6 +705,7 @@ 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,
@@ -680,7 +720,8 @@ 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,
@@ -695,7 +736,8 @@ 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,
@@ -710,7 +752,8 @@ 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,
@@ -725,6 +768,7 @@ 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 = &range_bipolar10,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -740,6 +784,7 @@ 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 = &range_bipolar10,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -754,6 +799,7 @@ 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 = &range_bipolar10,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -769,6 +815,7 @@ 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 = &range_bipolar10,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -784,6 +831,7 @@ 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,
@@ -799,6 +847,7 @@ 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,
@@ -812,6 +861,7 @@ 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,
},
@@ -823,6 +873,7 @@ 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,
},
@@ -835,6 +886,7 @@ 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,
},
@@ -848,6 +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 = &range_bipolar10,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -863,6 +916,7 @@ 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 = &range_bipolar10,
.ao_range_code = ao_range_code_60xx,
.ai_fifo = &ai_fifo_60xx,
@@ -878,6 +932,7 @@ 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,
@@ -893,6 +948,7 @@ 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,
@@ -908,6 +964,7 @@ 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,
@@ -923,6 +980,7 @@ 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,
@@ -957,6 +1015,7 @@ 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,
},
@@ -968,7 +1027,8 @@ 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,
},
@@ -980,7 +1040,8 @@ 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,
},
@@ -992,7 +1053,8 @@ 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,
},
@@ -1004,7 +1066,8 @@ 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,
},
@@ -1016,7 +1079,8 @@ 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,
},
@@ -1028,7 +1092,8 @@ 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,
},
@@ -1115,45 +1180,8 @@ static unsigned int ai_range_bits_6xxx(const struct comedi_device *dev,
unsigned int range_index)
{
const struct pcidas64_board *thisboard = dev->board_ptr;
- const struct comedi_krange *range =
- &thisboard->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:
- dev_err(dev->class_dev, "bug! in %s\n", __func__);
- break;
- }
- if (range->min == 0)
- bits += 0x900;
- return bits;
+ return thisboard->ai_range_code[range_index] << 8;
}
static unsigned int hw_revision(const struct comedi_device *dev,
--
2.2.2
--
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