staging: comedi: adv_pci1710: use the pci id_table 'driver_data'

Create an enum to the boardinfo and pass that enum in the pci_driver
id_table as the driver_data.

Change the macro used to fill in the device table from PCI_DEVICE() to
PCI_VDEVICE(). This allows passing the enum as the next field.

This allows removing the 'device_id' data from the boardinfo as well
the search function that was used to locate the boardinfo for the
PCI device.

The pci1710 and pci1710hg boards have the same vendor/device id so
it is impossible to determine which board is actually detected. The
boardinfo for the pci1710hg is identical to the pci1710 other than
the analog input range information. Remove the pci1710hg information
and #if out the range tables for that device with the define
USE_PCI1710HG_RANGE. Modify the pci1710 boardinfo accordingly to
use the same define to determine which range table to use. Until a
better solution is worked out, this will allow the driver to be
compiled to support the pci1710 (default) or pci1710hg.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/adv_pci1710.c

@@ -50,6 +50,17 @@ Configuration options:
 #include "8253.h"
 #include "amcc_s5933.h"
 
+/*
+ * The pci1710 and pci1710hg boards have the same device id!
+ *
+ * The only difference between these boards is in the
+ * supported analog input ranges.
+ *
+ * #define this if your card is a pci1710hg and you need the
+ * correct ranges reported to user space.
+ */
+#undef USE_PCI1710HG_RANGE
+
 #define PCI171x_PARANOIDCHECK	/* if defined, then is used code which control
 				 * correct channel number on every 12 bit
 				 * sample */
@@ -133,6 +144,7 @@ static const struct comedi_lrange range_pci1710_3 = { 9, {
 static const char range_codes_pci1710_3[] = { 0x00, 0x01, 0x02, 0x03, 0x04,
 					      0x10, 0x11, 0x12, 0x13 };
 
+#ifdef USE_PCI1710HG_RANGE
 static const struct comedi_lrange range_pci1710hg = { 12, {
 							   BIP_RANGE(5),
 							   BIP_RANGE(0.5),
@@ -152,6 +164,7 @@ static const struct comedi_lrange range_pci1710hg = { 12, {
 static const char range_codes_pci1710hg[] = { 0x00, 0x01, 0x02, 0x03, 0x04,
 					      0x05, 0x06, 0x07, 0x10, 0x11,
 					      0x12, 0x13 };
+#endif /* USE_PCI1710HG_RANGE */
 
 static const struct comedi_lrange range_pci17x1 = { 5, {
 							BIP_RANGE(10),
@@ -178,9 +191,16 @@ static const struct comedi_lrange range_pci171x_da = { 2, {
 							   }
 };
 
+enum pci1710_boardid {
+	BOARD_PCI1710,
+	BOARD_PCI1711,
+	BOARD_PCI1713,
+	BOARD_PCI1720,
+	BOARD_PCI1731,
+};
+
 struct boardtype {
 	const char *name;	/*  board name */
-	int device_id;
 	int iorange;		/*  I/O range len */
 	char have_irq;		/*  1=card support IRQ */
 	char cardtype;		/*  0=1710& co. 2=1713, ... */
@@ -200,9 +220,8 @@ struct boardtype {
 };
 
 static const struct boardtype boardtypes[] = {
-	{
+	[BOARD_PCI1710] = {
 		.name		= "pci1710",
-		.device_id	= 0x1710,
 		.iorange	= IORANGE_171x,
 		.have_irq	= 1,
 		.cardtype	= TYPE_PCI171X,
@@ -214,33 +233,19 @@ static const struct boardtype boardtypes[] = {
 		.n_counter	= 1,
 		.ai_maxdata	= 0x0fff,
 		.ao_maxdata	= 0x0fff,
+#ifndef USE_PCI1710HG_RANGE
 		.rangelist_ai	= &range_pci1710_3,
 		.rangecode_ai	= range_codes_pci1710_3,
-		.rangelist_ao	= &range_pci171x_da,
-		.ai_ns_min	= 10000,
-		.fifo_half_size	= 2048,
-	}, {
-		.name		= "pci1710hg",
-		.device_id	= 0x1710,
-		.iorange	= IORANGE_171x,
-		.have_irq	= 1,
-		.cardtype	= TYPE_PCI171X,
-		.n_aichan	= 16,
-		.n_aichand	= 8,
-		.n_aochan	= 2,
-		.n_dichan	= 16,
-		.n_dochan	= 16,
-		.n_counter	= 1,
-		.ai_maxdata	= 0x0fff,
-		.ao_maxdata	= 0x0fff,
+#else
 		.rangelist_ai	= &range_pci1710hg,
 		.rangecode_ai	= range_codes_pci1710hg,
+#endif
 		.rangelist_ao	= &range_pci171x_da,
 		.ai_ns_min	= 10000,
 		.fifo_half_size	= 2048,
-	}, {
+	},
+	[BOARD_PCI1711] = {
 		.name		= "pci1711",
-		.device_id	= 0x1711,
 		.iorange	= IORANGE_171x,
 		.have_irq	= 1,
 		.cardtype	= TYPE_PCI171X,
@@ -256,9 +261,9 @@ static const struct boardtype boardtypes[] = {
 		.rangelist_ao	= &range_pci171x_da,
 		.ai_ns_min	= 10000,
 		.fifo_half_size	= 512,
-	}, {
+	},
+	[BOARD_PCI1713] = {
 		.name		= "pci1713",
-		.device_id	= 0x1713,
 		.iorange	= IORANGE_171x,
 		.have_irq	= 1,
 		.cardtype	= TYPE_PCI1713,
@@ -269,17 +274,17 @@ static const struct boardtype boardtypes[] = {
 		.rangecode_ai	= range_codes_pci1710_3,
 		.ai_ns_min	= 10000,
 		.fifo_half_size	= 2048,
-	}, {
+	},
+	[BOARD_PCI1720] = {
 		.name		= "pci1720",
-		.device_id	= 0x1720,
 		.iorange	= IORANGE_1720,
 		.cardtype	= TYPE_PCI1720,
 		.n_aochan	= 4,
 		.ao_maxdata	= 0x0fff,
 		.rangelist_ao	= &range_pci1720,
-	}, {
+	},
+	[BOARD_PCI1731] = {
 		.name		= "pci1731",
-		.device_id	= 0x1731,
 		.iorange	= IORANGE_171x,
 		.have_irq	= 1,
 		.cardtype	= TYPE_PCI171X,
@@ -1220,30 +1225,17 @@ static int pci1710_reset(struct comedi_device *dev)
 	}
 }
 
-static const void *pci1710_find_boardinfo(struct comedi_device *dev,
-					  struct pci_dev *pcidev)
-{
-	const struct boardtype *this_board;
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(boardtypes); i++) {
-		this_board = &boardtypes[i];
-		if (pcidev->device == this_board->device_id)
-			return this_board;
-	}
-	return NULL;
-}
-
 static int pci1710_auto_attach(struct comedi_device *dev,
-					 unsigned long context_unused)
+			       unsigned long context)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
-	const struct boardtype *this_board;
+	const struct boardtype *this_board = NULL;
 	struct pci1710_private *devpriv;
 	struct comedi_subdevice *s;
 	int ret, subdev, n_subdevices;
 
-	this_board = pci1710_find_boardinfo(dev, pcidev);
+	if (context < ARRAY_SIZE(boardtypes))
+		this_board = &boardtypes[context];
 	if (!this_board)
 		return -ENODEV;
 	dev->board_ptr = this_board;
@@ -1405,11 +1397,11 @@ static int adv_pci1710_pci_probe(struct pci_dev *dev,
 }
 
 static DEFINE_PCI_DEVICE_TABLE(adv_pci1710_pci_table) = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1710) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1711) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1713) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1720) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1731) },
+	{ PCI_VDEVICE(ADVANTECH, 0x1710), BOARD_PCI1710 },
+	{ PCI_VDEVICE(ADVANTECH, 0x1711), BOARD_PCI1711 },
+	{ PCI_VDEVICE(ADVANTECH, 0x1713), BOARD_PCI1713 },
+	{ PCI_VDEVICE(ADVANTECH, 0x1720), BOARD_PCI1720 },
+	{ PCI_VDEVICE(ADVANTECH, 0x1731), BOARD_PCI1731 },
 	{ 0 }
 };
 MODULE_DEVICE_TABLE(pci, adv_pci1710_pci_table);