staging: comedi: amplc_pc236: separately configure ISA and PCI

The amplc_pc236 driver supports both ISA and PCI cards, but currently
it is only possible to select the driver if PCI is configured.  This
patch splits the configuration to make the ISA and PCI parts seperately
selectable, and changes the driver to only include the selected ISA
and/or PCI board types.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/Kconfig

@@ -223,6 +223,16 @@ config COMEDI_AMPLC_DIO200_ISA
 	  To compile this driver as a module, choose M here: the module will be
 	  called amplc_dio200.
 
+config COMEDI_AMPLC_PC236_ISA
+	tristate "Amplicon PC36AT DIO board support"
+	select COMEDI_AMPLC_PC236
+	default N
+	---help---
+	  Enable support for Amplicon PC36AT ISA DIO board.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called amplc_pc236.
+
 config COMEDI_RTI800
 	tristate "Analog Devices RTI-800/815 ISA card support"
 	default N
@@ -794,12 +804,12 @@ config COMEDI_AMPLC_DIO200_PCI
 	  To compile this driver as a module, choose M here: the module will be
 	  called amplc_dio200.
 
-config COMEDI_AMPLC_PC236
-	tristate "Amplicon PC36AT and PCI236 DIO board support"
-	select COMEDI_8255
+config COMEDI_AMPLC_PC236_PCI
+	tristate "Amplicon PCI236 DIO board support"
+	select COMEDI_AMPLC_PC236
 	default N
 	---help---
-	  Enable support for Amplicon PC36AT and PCI236 DIO boards
+	  Enable support for Amplicon PCI236 DIO board.
 
 	  To compile this driver as a module, choose M here: the module will be
 	  called amplc_pc236.
@@ -1399,3 +1409,8 @@ config COMEDI_AMPLC_DIO200
 	def_tristate N
 	depends on COMEDI
 	select COMEDI_8255
+
+config COMEDI_AMPLC_PC236
+	def_tristate N
+	depends on COMEDI
+	select COMEDI_8255

drivers/staging/comedi/drivers/amplc_pc236.c

@@ -63,6 +63,14 @@ unused.
 
 #define PC236_DRIVER_NAME	"amplc_pc236"
 
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA_MODULE
+#define CONFIG_COMEDI_AMPLC_PC236_ISA
+#endif
+
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI_MODULE
+#define CONFIG_COMEDI_AMPLC_PC236_PCI
+#endif
+
 /* PCI236 PCI configuration register information */
 #define PCI_VENDOR_ID_AMPLICON 0x14dc
 #define PCI_DEVICE_ID_AMPLICON_PCI236 0x0009
@@ -106,13 +114,15 @@ struct pc236_board {
 	enum pc236_model model;
 };
 static const struct pc236_board pc236_boards[] = {
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA
 	{
 	 .name = "pc36at",
 	 .fancy_name = "PC36AT",
 	 .bustype = isa_bustype,
 	 .model = pc36at_model,
 	 },
-#ifdef CONFIG_COMEDI_PCI
+#endif
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 	{
 	 .name = "pci236",
 	 .fancy_name = "PCI236",
@@ -120,8 +130,6 @@ static const struct pc236_board pc236_boards[] = {
 	 .bustype = pci_bustype,
 	 .model = pci236_model,
 	 },
-#endif
-#ifdef CONFIG_COMEDI_PCI
 	{
 	 .name = PC236_DRIVER_NAME,
 	 .fancy_name = PC236_DRIVER_NAME,
@@ -132,14 +140,14 @@ static const struct pc236_board pc236_boards[] = {
 #endif
 };
 
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 static DEFINE_PCI_DEVICE_TABLE(pc236_pci_table) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI236) },
 	{0}
 };
 
 MODULE_DEVICE_TABLE(pci, pc236_pci_table);
-#endif /* CONFIG_COMEDI_PCI */
+#endif /* CONFIG_COMEDI_AMPLC_PC236_PCI */
 
 /*
  * Useful for shorthand access to the particular board structure
@@ -151,7 +159,7 @@ MODULE_DEVICE_TABLE(pci, pc236_pci_table);
    feel free to suggest moving the variable to the struct comedi_device struct.
  */
 struct pc236_private {
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 	/* PCI device */
 	struct pci_dev *pci_dev;
 	unsigned long lcr_iobase; /* PLX PCI9052 config registers in PCIBAR1 */
@@ -179,7 +187,7 @@ static struct comedi_driver driver_amplc_pc236 = {
 	.num_names = ARRAY_SIZE(pc236_boards),
 };
 
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 static int __devinit driver_amplc_pc236_pci_probe(struct pci_dev *dev,
 						  const struct pci_device_id
 						  *ent)
@@ -234,8 +242,10 @@ module_init(driver_amplc_pc236_init_module);
 module_exit(driver_amplc_pc236_cleanup_module);
 #endif
 
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA
 static int pc236_request_region(unsigned minor, unsigned long from,
 				unsigned long extent);
+#endif
 static void pc236_intr_disable(struct comedi_device *dev);
 static void pc236_intr_enable(struct comedi_device *dev);
 static int pc236_intr_check(struct comedi_device *dev);
@@ -255,7 +265,7 @@ static irqreturn_t pc236_interrupt(int irq, void *d);
  * This function looks for a PCI device matching the requested board name,
  * bus and slot.
  */
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 static int
 pc236_find_pci(struct comedi_device *dev, int bus, int slot,
 	       struct pci_dev **pci_dev_p)
@@ -324,7 +334,7 @@ static int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	struct comedi_subdevice *s;
 	unsigned long iobase = 0;
 	unsigned int irq = 0;
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 	struct pci_dev *pci_dev = NULL;
 	int bus = 0, slot = 0;
 #endif
@@ -345,12 +355,14 @@ static int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	}
 	/* Process options. */
 	switch (thisboard->bustype) {
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA
 	case isa_bustype:
 		iobase = it->options[0];
 		irq = it->options[1];
 		share_irq = 0;
 		break;
-#ifdef CONFIG_COMEDI_PCI
+#endif
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 	case pci_bustype:
 		bus = it->options[0];
 		slot = it->options[1];
@@ -361,7 +373,7 @@ static int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 			return ret;
 		devpriv->pci_dev = pci_dev;
 		break;
-#endif /* CONFIG_COMEDI_PCI */
+#endif
 	default:
 		printk(KERN_ERR
 		       "comedi%d: %s: BUG! cannot determine board type!\n",
@@ -376,7 +388,7 @@ static int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	dev->board_name = thisboard->name;
 
 	/* Enable device and reserve I/O spaces. */
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 	if (pci_dev) {
 
 		ret = comedi_pci_enable(pci_dev, PC236_DRIVER_NAME);
@@ -392,9 +404,11 @@ static int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	} else
 #endif
 	{
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA
 		ret = pc236_request_region(dev->minor, iobase, PC236_IO_SIZE);
 		if (ret < 0)
 			return ret;
+#endif
 	}
 	dev->iobase = iobase;
 
@@ -439,12 +453,19 @@ static int pc236_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 		}
 	}
 	printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
-	if (thisboard->bustype == isa_bustype) {
+	switch (thisboard->bustype) {
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA
+	case isa_bustype:
 		printk("(base %#lx) ", iobase);
-	} else {
-#ifdef CONFIG_COMEDI_PCI
+		break;
+#endif
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
+	case pci_bustype:
 		printk("(pci %s) ", pci_name(pci_dev));
+		break;
 #endif
+	default:
+		break;
 	}
 	if (irq)
 		printk("(irq %u%s) ", irq, (dev->irq ? "" : " UNAVAILABLE"));
@@ -476,7 +497,7 @@ static int pc236_detach(struct comedi_device *dev)
 	if (dev->subdevices)
 		subdev_8255_cleanup(dev, dev->subdevices + 0);
 	if (devpriv) {
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 		if (devpriv->pci_dev) {
 			if (dev->iobase)
 				comedi_pci_disable(devpriv->pci_dev);
@@ -484,8 +505,10 @@ static int pc236_detach(struct comedi_device *dev)
 		} else
 #endif
 		{
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA
 			if (dev->iobase)
 				release_region(dev->iobase, PC236_IO_SIZE);
+#endif
 		}
 	}
 	if (dev->board_name) {
@@ -499,6 +522,7 @@ static int pc236_detach(struct comedi_device *dev)
  * This function checks and requests an I/O region, reporting an error
  * if there is a conflict.
  */
+#ifdef CONFIG_COMEDI_AMPLC_PC236_ISA
 static int pc236_request_region(unsigned minor, unsigned long from,
 				unsigned long extent)
 {
@@ -509,6 +533,7 @@ static int pc236_request_region(unsigned minor, unsigned long from,
 	}
 	return 0;
 }
+#endif
 
 /*
  * This function is called to mark the interrupt as disabled (no command
@@ -521,7 +546,7 @@ static void pc236_intr_disable(struct comedi_device *dev)
 
 	spin_lock_irqsave(&dev->spinlock, flags);
 	devpriv->enable_irq = 0;
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 	if (devpriv->lcr_iobase)
 		outl(PCI236_INTR_DISABLE, devpriv->lcr_iobase + PLX9052_INTCSR);
 #endif
@@ -539,7 +564,7 @@ static void pc236_intr_enable(struct comedi_device *dev)
 
 	spin_lock_irqsave(&dev->spinlock, flags);
 	devpriv->enable_irq = 1;
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 	if (devpriv->lcr_iobase)
 		outl(PCI236_INTR_ENABLE, devpriv->lcr_iobase + PLX9052_INTCSR);
 #endif
@@ -561,7 +586,7 @@ static int pc236_intr_check(struct comedi_device *dev)
 	spin_lock_irqsave(&dev->spinlock, flags);
 	if (devpriv->enable_irq) {
 		retval = 1;
-#ifdef CONFIG_COMEDI_PCI
+#ifdef CONFIG_COMEDI_AMPLC_PC236_PCI
 		if (devpriv->lcr_iobase) {
 			if ((inl(devpriv->lcr_iobase + PLX9052_INTCSR)
 			     & PLX9052_INTCSR_LI1STAT_MASK)