staging: comedi: das1800: remove 'resolution' boardinfo

The "hr" type boards have 16-bit analog inputs and outputs.
All other board types have 12-bit.

Remove the 'resolution' member of the boardinfo and use the
'id' member to determine the subdevices 'maxdata'.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/das1800.c b/drivers/staging/comedi/drivers/das1800.c
index f870824..43e621b 100644 (file)
--- a/drivers/staging/comedi/drivers/das1800.c
+++ b/drivers/staging/comedi/drivers/das1800.c
@@ -227,7 +227,6 @@ struct das1800_board {
        const char *name;
        unsigned char id;
        int ai_speed;           /* max conversion period in nanoseconds */
-       int resolution;         /* bits of ai resolution */
        int qram_len;           /* length of card's channel / gain queue */
        int do_n_chan;          /* number of digital output channels */
        int ao_ability;         /* 0 == no analog out, 1 == basic analog out, 2 == waveform analog out */
@@ -244,7 +243,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1701st",
                .id             = DAS1800_ID_ST,
                .ai_speed       = 6250,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 0,
@@ -255,7 +253,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1701st-da",
                .id             = DAS1800_ID_ST_DA,
                .ai_speed       = 6250,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 1,
@@ -266,7 +263,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1702st",
                .id             = DAS1800_ID_ST,
                .ai_speed       = 6250,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 0,
@@ -277,7 +273,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1702st-da",
                .id             = DAS1800_ID_ST_DA,
                .ai_speed       = 6250,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 1,
@@ -288,7 +283,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1702hr",
                .id             = DAS1800_ID_HR,
                .ai_speed       = 20000,
-               .resolution     = 16,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 0,
@@ -299,7 +293,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1702hr-da",
                .id             = DAS1800_ID_HR_DA,
                .ai_speed       = 20000,
-               .resolution     = 16,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 1,
@@ -310,7 +303,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1701ao",
                .id             = DAS1800_ID_AO,
                .ai_speed       = 6250,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 2,
@@ -321,7 +313,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1702ao",
                .id             = DAS1800_ID_AO,
                .ai_speed       = 6250,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 2,
@@ -332,7 +323,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1801st",
                .id             = DAS1800_ID_ST,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 0,
@@ -343,7 +333,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1801st-da",
                .id             = DAS1800_ID_ST_DA,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 1,
@@ -354,7 +343,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1802st",
                .id             = DAS1800_ID_ST,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 0,
@@ -365,7 +353,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1802st-da",
                .id             = DAS1800_ID_ST_DA,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 1,
@@ -376,7 +363,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1802hr",
                .id             = DAS1800_ID_HR,
                .ai_speed       = 10000,
-               .resolution     = 16,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 0,
@@ -387,7 +373,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1802hr-da",
                .id             = DAS1800_ID_HR_DA,
                .ai_speed       = 10000,
-               .resolution     = 16,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 1,
@@ -398,7 +383,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1801hc",
                .id             = DAS1800_ID_HC,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 64,
                .do_n_chan      = 8,
                .ao_ability     = 1,
@@ -409,7 +393,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1802hc",
                .id             = DAS1800_ID_HC,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 64,
                .do_n_chan      = 8,
                .ao_ability     = 1,
@@ -420,7 +403,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1801ao",
                .id             = DAS1800_ID_AO,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 2,
@@ -431,7 +413,6 @@ static const struct das1800_board das1800_boards[] = {
                .name           = "das-1802ao",
                .id             = DAS1800_ID_AO,
                .ai_speed       = 3000,
-               .resolution     = 12,
                .qram_len       = 256,
                .do_n_chan      = 4,
                .ao_ability     = 2,
@@ -1298,6 +1279,7 @@ static int das1800_attach(struct comedi_device *dev,
        struct das1800_private *devpriv;
        struct comedi_subdevice *s;
        unsigned int irq = it->options[1];
+       bool is_16bit;
        int ret;
 
        devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
@@ -1313,6 +1295,8 @@ static int das1800_attach(struct comedi_device *dev,
                return ret;
        board = dev->board_ptr;
 
+       is_16bit = board->id == DAS1800_ID_HR || board->id == DAS1800_ID_HR_DA;
+
        /*  if it is an 'ao' board with fancy analog out then we need extra io ports */
        if (board->ao_ability == 2) {
                unsigned long iobase2 = dev->iobase + IOBASE2;
@@ -1377,7 +1361,7 @@ static int das1800_attach(struct comedi_device *dev,
        if (board->id != DAS1800_ID_HC)
                s->subdev_flags |= SDF_COMMON;
        s->n_chan       = board->qram_len;
-       s->maxdata      = (1 << board->resolution) - 1;
+       s->maxdata      = is_16bit ? 0xffff : 0x0fff;
        s->range_table  = board->range_ai;
        s->insn_read    = das1800_ai_insn_read;
        if (dev->irq) {
@@ -1397,7 +1381,7 @@ static int das1800_attach(struct comedi_device *dev,
                s->type         = COMEDI_SUBD_AO;
                s->subdev_flags = SDF_WRITABLE;
                s->n_chan       = board->ao_n_chan;
-               s->maxdata      = (1 << board->resolution) - 1;
+               s->maxdata      = is_16bit ? 0xffff : 0x0fff;
                s->range_table  = &range_bipolar10;
                s->insn_write   = das1800_ao_insn_write;
        } else {