staging: comedi: das1800: remove 'ao_ability' boardinfo

The "da" and "hc" type boards have normal analog outputs. The
"ao" type boards have move advanced analog outputs with waveform
generation capability.

Remove the 'ao_ability' member of the boardinfo and use the
'id' member to determine if the subdevice should be initialized.

The "ao" waveform analog outputs are not currently supported.
For aesthetics, add an else if for the initialization of the
subdevice for these boards.
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>

drivers/staging/comedi/drivers/das1800.c

@@ -228,7 +228,6 @@ struct das1800_board {
 	unsigned char id;
 	int ai_speed;		/* max conversion period in nanoseconds */
 	int qram_len;		/* length of card's channel / gain queue */
-	int ao_ability;		/* 0 == no analog out, 1 == basic analog out, 2 == waveform analog out */
 	const struct comedi_lrange *range_ai;	/* available input ranges */
 };
 
@@ -242,7 +241,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST,
 		.ai_speed	= 6250,
 		.qram_len	= 256,
-		.ao_ability	= 0,
 		.range_ai	= &range_ai_das1801,
 	},
 	[BOARD_DAS1701ST_DA] = {
@@ -250,7 +248,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST_DA,
 		.ai_speed	= 6250,
 		.qram_len	= 256,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1801,
 	},
 	[BOARD_DAS1702ST] = {
@@ -258,7 +255,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST,
 		.ai_speed	= 6250,
 		.qram_len	= 256,
-		.ao_ability	= 0,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1702ST_DA] = {
@@ -266,7 +262,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST_DA,
 		.ai_speed	= 6250,
 		.qram_len	= 256,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1702HR] = {
@@ -274,7 +269,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_HR,
 		.ai_speed	= 20000,
 		.qram_len	= 256,
-		.ao_ability	= 0,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1702HR_DA] = {
@@ -282,7 +276,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_HR_DA,
 		.ai_speed	= 20000,
 		.qram_len	= 256,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1701AO] = {
@@ -290,7 +283,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_AO,
 		.ai_speed	= 6250,
 		.qram_len	= 256,
-		.ao_ability	= 2,
 		.range_ai	= &range_ai_das1801,
 	},
 	[BOARD_DAS1702AO] = {
@@ -298,7 +290,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_AO,
 		.ai_speed	= 6250,
 		.qram_len	= 256,
-		.ao_ability	= 2,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1801ST] = {
@@ -306,7 +297,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST,
 		.ai_speed	= 3000,
 		.qram_len	= 256,
-		.ao_ability	= 0,
 		.range_ai	= &range_ai_das1801,
 	},
 	[BOARD_DAS1801ST_DA] = {
@@ -314,7 +304,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST_DA,
 		.ai_speed	= 3000,
 		.qram_len	= 256,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1801,
 	},
 	[BOARD_DAS1802ST] = {
@@ -322,7 +311,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST,
 		.ai_speed	= 3000,
 		.qram_len	= 256,
-		.ao_ability	= 0,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1802ST_DA] = {
@@ -330,7 +318,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_ST_DA,
 		.ai_speed	= 3000,
 		.qram_len	= 256,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1802HR] = {
@@ -338,7 +325,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_HR,
 		.ai_speed	= 10000,
 		.qram_len	= 256,
-		.ao_ability	= 0,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1802HR_DA] = {
@@ -346,7 +332,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_HR_DA,
 		.ai_speed	= 10000,
 		.qram_len	= 256,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1801HC] = {
@@ -354,7 +339,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_HC,
 		.ai_speed	= 3000,
 		.qram_len	= 64,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1801,
 	},
 	[BOARD_DAS1802HC] = {
@@ -362,7 +346,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_HC,
 		.ai_speed	= 3000,
 		.qram_len	= 64,
-		.ao_ability	= 1,
 		.range_ai	= &range_ai_das1802,
 	},
 	[BOARD_DAS1801AO] = {
@@ -370,7 +353,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_AO,
 		.ai_speed	= 3000,
 		.qram_len	= 256,
-		.ao_ability	= 2,
 		.range_ai	= &range_ai_das1801,
 	},
 	[BOARD_DAS1802AO] = {
@@ -378,7 +360,6 @@ static const struct das1800_board das1800_boards[] = {
 		.id		= DAS1800_ID_AO,
 		.ai_speed	= 3000,
 		.qram_len	= 256,
-		.ao_ability	= 2,
 		.range_ai	= &range_ai_das1802,
 	},
 };
@@ -1266,8 +1247,8 @@ static int das1800_attach(struct comedi_device *dev,
 
 	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) {
+	/* waveform 'ao' boards have additional io ports */
+	if (board->id == DAS1800_ID_AO) {
 		unsigned long iobase2 = dev->iobase + IOBASE2;
 
 		ret = __comedi_request_region(dev, iobase2, DAS1800_SIZE);
@@ -1346,7 +1327,7 @@ static int das1800_attach(struct comedi_device *dev,
 
 	/* Analog Output subdevice */
 	s = &dev->subdevices[1];
-	if (board->ao_ability == 1) {
+	if (board->id == DAS1800_ID_ST_DA || board->id == DAS1800_ID_HR_DA) {
 		s->type		= COMEDI_SUBD_AO;
 		s->subdev_flags	= SDF_WRITABLE;
 		s->n_chan	= (board->id == DAS1800_ID_ST_DA) ? 4 : 2;
@@ -1359,6 +1340,12 @@ static int das1800_attach(struct comedi_device *dev,
 			outb(DAC(i), dev->iobase + DAS1800_SELECT);
 			outw(0, dev->iobase + DAS1800_DAC);
 		}
+	} else if (board->id == DAS1800_ID_AO) {
+		/*
+		 * 'ao' boards have waveform analog outputs that are not
+		 * currently supported.
+		 */
+		s->type		= COMEDI_SUBD_UNUSED;
 	} else {
 		s->type		= COMEDI_SUBD_UNUSED;
 	}