[PATCH 13/26] staging: comedi: ni_labpc: split out bus specific code

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The PCMCIA support for the National Instruments Lab-PC DAQCard-1200
is already handled by a separate module, ni_labpc_cs. Split the bus
specific ISA and PCI code out of this driver and create two new
drivers, ni_labpc_isa and ni_labpc_pci. This allows the ni_labpc
module to be a standalone module with all the "common" code.

This allows removing all the #ifdef'ery in the comedi_driver (*attach),
(*auto_attach), and (*detach) functions. All the bus specific operations
are now handled in the bus specific drivers.

Modify the parameters passed to labpc_common_attach(). The bus specific
drivers now handle setting dev->iobase as appropriate for the bus. The
ISA driver is the only one that uses dma so the allocation of the dma
channel has been moved to it's private (*attach) function. Pass the
appropriate irq flags to labpc_common_attach() so it does not have to
deal with the bus type.

Cleanup the multi-line comments at the beginning of each file so they
follow the coding style and are appropriate for the new configuration
of the drivers.

Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/staging/comedi/Kconfig                |  36 ++-
 drivers/staging/comedi/drivers/Makefile       |   2 +
 drivers/staging/comedi/drivers/ni_labpc.c     | 441 ++++----------------------
 drivers/staging/comedi/drivers/ni_labpc.h     |   9 +-
 drivers/staging/comedi/drivers/ni_labpc_cs.c  | 119 +++----
 drivers/staging/comedi/drivers/ni_labpc_isa.c | 194 +++++++++++
 drivers/staging/comedi/drivers/ni_labpc_pci.c | 140 ++++++++
 7 files changed, 482 insertions(+), 459 deletions(-)
 create mode 100644 drivers/staging/comedi/drivers/ni_labpc_isa.c
 create mode 100644 drivers/staging/comedi/drivers/ni_labpc_pci.c

diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
index 7841399..150f407 100644
--- a/drivers/staging/comedi/Kconfig
+++ b/drivers/staging/comedi/Kconfig
@@ -484,6 +484,20 @@ config COMEDI_NI_ATMIO16D
 	  To compile this driver as a module, choose M here: the module will be
 	  called ni_atmio16d.
 
+config COMEDI_NI_LABPC_ISA
+	tristate "NI Lab-PC and compatibles ISA support"
+	depends on VIRT_TO_BUS
+	depends on ISA_DMA_API
+	select COMEDI_NI_LABPC
+	---help---
+	  Enable support for National Instruments Lab-PC and compatibles
+	  Lab-PC-1200, Lab-PC-1200AI, Lab-PC+.
+	  Kernel-level ISA plug-and-play support for the lab-pc-1200 boards has
+	  not yet been added to the driver.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ni_labpc_isa.
+
 config COMEDI_PCMAD
 	tristate "Winsystems PCM-A/D12 and PCM-A/D16 PC/104 board support"
 	---help---
@@ -1007,20 +1021,15 @@ config COMEDI_NI_670X
 	  To compile this driver as a module, choose M here: the module will be
 	  called ni_670x.
 
-config COMEDI_NI_LABPC
-	tristate "NI Lab-PC and compatibles ISA and PCI support"
+config COMEDI_NI_LABPC_PCI
+	tristate "NI Lab-PC PCI-1200 support"
 	select COMEDI_MITE
-	select COMEDI_8255
-	select COMEDI_FC
-	depends on VIRT_TO_BUS
+	select COMEDI_NI_LABPC
 	---help---
-	  Enable support for National Instruments Lab-PC and compatibles
-	  Lab-PC-1200, Lab-PC-1200AI, Lab-PC+ and PCI-1200.
-	  Kernel-level ISA plug-and-play support for the lab-pc-1200 boards has
-	  not yet been added to the driver.
+	  Enable support for National Instruments Lab-PC PCI-1200.
 
 	  To compile this driver as a module, choose M here: the module will be
-	  called ni_labpc.
+	  called ni_labpc_pci.
 
 config COMEDI_NI_PCIDIO
 	tristate "NI PCI-DIO32HS, PCI-6533, PCI-6534 support"
@@ -1142,7 +1151,7 @@ config COMEDI_NI_DAQ_DIO24_CS
 
 config COMEDI_NI_LABPC_CS
 	tristate "NI DAQCard-1200 PCMCIA support"
-	depends on COMEDI_NI_LABPC
+	select COMEDI_NI_LABPC
 	---help---
 	  Enable support for the National Instruments PCMCIA DAQCard-1200
 
@@ -1258,6 +1267,11 @@ config COMEDI_DAS08
 	tristate
 	select COMEDI_8255
 
+config COMEDI_NI_LABPC
+	tristate
+	select COMEDI_8255
+	select COMEDI_FC
+
 config COMEDI_NI_TIO
 	tristate
 
diff --git a/drivers/staging/comedi/drivers/Makefile b/drivers/staging/comedi/drivers/Makefile
index 6cdef45..7786bac 100644
--- a/drivers/staging/comedi/drivers/Makefile
+++ b/drivers/staging/comedi/drivers/Makefile
@@ -47,6 +47,7 @@ obj-$(CONFIG_COMEDI_NI_AT_A2150)	+= ni_at_a2150.o
 obj-$(CONFIG_COMEDI_NI_AT_AO)		+= ni_at_ao.o
 obj-$(CONFIG_COMEDI_NI_ATMIO)		+= ni_atmio.o
 obj-$(CONFIG_COMEDI_NI_ATMIO16D)	+= ni_atmio16d.o
+obj-$(CONFIG_COMEDI_NI_LABPC_ISA)	+= ni_labpc_isa.o
 obj-$(CONFIG_COMEDI_PCMAD)		+= pcmad.o
 obj-$(CONFIG_COMEDI_PCMDA12)		+= pcmda12.o
 obj-$(CONFIG_COMEDI_PCMMIO)		+= pcmmio.o
@@ -104,6 +105,7 @@ obj-$(CONFIG_COMEDI_NI_6527)		+= ni_6527.o
 obj-$(CONFIG_COMEDI_NI_65XX)		+= ni_65xx.o
 obj-$(CONFIG_COMEDI_NI_660X)		+= ni_660x.o
 obj-$(CONFIG_COMEDI_NI_670X)		+= ni_670x.o
+obj-$(CONFIG_COMEDI_NI_LABPC_PCI)	+= ni_labpc_pci.o
 obj-$(CONFIG_COMEDI_NI_PCIDIO)		+= ni_pcidio.o
 obj-$(CONFIG_COMEDI_NI_PCIMIO)		+= ni_pcimio.o
 obj-$(CONFIG_COMEDI_RTD520)		+= rtd520.o
diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c
index 39ac88b..7ef36f7 100644
--- a/drivers/staging/comedi/drivers/ni_labpc.c
+++ b/drivers/staging/comedi/drivers/ni_labpc.c
@@ -1,79 +1,54 @@
 /*
-    comedi/drivers/ni_labpc.c
-    Driver for National Instruments Lab-PC series boards and compatibles
-    Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-************************************************************************
-*/
-/*
-Driver: ni_labpc
-Description: National Instruments Lab-PC (& compatibles)
-Author: Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
-Devices: [National Instruments] Lab-PC-1200 (labpc-1200),
-  Lab-PC-1200AI (labpc-1200ai), Lab-PC+ (lab-pc+), PCI-1200 (ni_labpc)
-Status: works
-
-Tested with lab-pc-1200.  For the older Lab-PC+, not all input ranges
-and analog references will work, the available ranges/arefs will
-depend on how you have configured the jumpers on your board
-(see your owner's manual).
-
-Kernel-level ISA plug-and-play support for the lab-pc-1200
-boards has not
-yet been added to the driver, mainly due to the fact that
-I don't know the device id numbers.  If you have one
-of these boards,
-please file a bug report at http://comedi.org/ 
-so I can get the necessary information from you.
-
-The 1200 series boards have onboard calibration dacs for correcting
-analog input/output offsets and gains.  The proper settings for these
-caldacs are stored on the board's eeprom.  To read the caldac values
-from the eeprom and store them into a file that can be then be used by
-comedilib, use the comedi_calibrate program.
-
-Configuration options - ISA boards:
-  [0] - I/O port base address
-  [1] - IRQ (optional, required for timed or externally triggered conversions)
-  [2] - DMA channel (optional)
-
-Configuration options - PCI boards:
-  [0] - bus (optional)
-  [1] - slot (optional)
-
-The Lab-pc+ has quirky chanlist requirements
-when scanning multiple channels.  Multiple channel scan
-sequence must start at highest channel, then decrement down to
-channel 0.  The rest of the cards can scan down like lab-pc+ or scan
-up from channel zero.  Chanlists consisting of all one channel
-are also legal, and allow you to pace conversions in bursts.
-
-*/
+ * comedi/drivers/ni_labpc.c
+ * Common module for National Instruments Lab-PC series boards and compatibles
+ * Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
 
 /*
+ * Driver: ni_labpc
+ * Description: Common module for National Instruments Lab-PC drivers
+ * Devices: various, see ni_labpc_isa, ni_labpc_cs, and ni_labpc_pci
+ * Author: Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ * Status: works
+ *
+ * Tested with lab-pc-1200. For the older Lab-PC+, not all input ranges
+ * and analog references will work, the available ranges/arefs will
+ * depend on how you have configured the jumpers on your board (see your
+ * owner's manual).
+ *
+ * The 1200 series boards have onboard calibration dacs for correcting
+ * analog input/output offsets and gains. The proper settings for these
+ * caldacs are stored on the board's eeprom. To read the caldac values
+ * from the eeprom and store them into a file that can be then be used by
+ * comedilib, use the comedi_calibrate program.
+ *
+ * The Lab-pc+ has quirky chanlist requirements when scanning multiple
+ * channels. Multiple channel scan sequence must start at highest channel,
+ * then decrement down to channel 0.  The rest of the cards can scan down
+ * like lab-pc+ or scan up from channel zero.  Chanlists consisting of all
+ * one channel are also legal, and allow you to pace conversions in bursts.
+ *
+ * NI manuals:
+ *   341309a (labpc-1200 register manual)
+ *   340914a (pci-1200)
+ *   320502b (lab-pc+)
+ *   340988a (daqcard-1200)
+ */
 
-NI manuals:
-341309a (labpc-1200 register manual)
-340914a (pci-1200)
-320502b (lab-pc+)
-
-*/
-
-#include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
 #include <linux/io.h>
@@ -85,14 +60,9 @@ NI manuals:
 
 #include "8253.h"
 #include "8255.h"
-#include "mite.h"
 #include "comedi_fc.h"
 #include "ni_labpc.h"
 
-#define DRV_NAME "ni_labpc"
-
-/* size of io region used by board */
-#define LABPC_SIZE           32
 /* 2 MHz master clock */
 #define LABPC_TIMER_BASE            500
 
@@ -215,37 +185,6 @@ enum scan_mode {
 	MODE_MULT_CHAN_DOWN,
 };
 
-static const int labpc_plus_is_unipolar[] = {
-	0, 0, 0, 0, 0, 0, 0, 0,
-	1, 1, 1, 1, 1, 1, 1, 1,
-};
-
-static const int labpc_plus_ai_gain_bits[] = {
-	0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
-	0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
-};
-
-static const struct comedi_lrange range_labpc_plus_ai = {
-	16, {
-		BIP_RANGE(5),
-		BIP_RANGE(4),
-		BIP_RANGE(2.5),
-		BIP_RANGE(1),
-		BIP_RANGE(0.5),
-		BIP_RANGE(0.25),
-		BIP_RANGE(0.1),
-		BIP_RANGE(0.05),
-		UNI_RANGE(10),
-		UNI_RANGE(8),
-		UNI_RANGE(5),
-		UNI_RANGE(2),
-		UNI_RANGE(1),
-		UNI_RANGE(0.5),
-		UNI_RANGE(0.2),
-		UNI_RANGE(0.1)
-	}
-};
-
 const int labpc_1200_is_unipolar[] = {
 	0, 0, 0, 0, 0, 0, 0,
 	1, 1, 1, 1, 1, 1, 1,
@@ -308,55 +247,6 @@ static inline void labpc_writeb(unsigned int byte, unsigned long address)
 	writeb(byte, (void __iomem *)address);
 }
 
-static const struct labpc_boardinfo labpc_boards[] = {
-	{
-		.name			= "lab-pc-1200",
-		.ai_speed		= 10000,
-		.bustype		= isa_bustype,
-		.register_layout	= labpc_1200_layout,
-		.has_ao			= 1,
-		.ai_range_table		= &range_labpc_1200_ai,
-		.ai_range_code		= labpc_1200_ai_gain_bits,
-		.ai_range_is_unipolar	= labpc_1200_is_unipolar,
-		.ai_scan_up		= 1,
-	}, {
-		.name			= "lab-pc-1200ai",
-		.ai_speed		= 10000,
-		.bustype		= isa_bustype,
-		.register_layout	= labpc_1200_layout,
-		.ai_range_table		= &range_labpc_1200_ai,
-		.ai_range_code		= labpc_1200_ai_gain_bits,
-		.ai_range_is_unipolar	= labpc_1200_is_unipolar,
-		.ai_scan_up		= 1,
-	}, {
-		.name			= "lab-pc+",
-		.ai_speed		= 12000,
-		.bustype		= isa_bustype,
-		.register_layout	= labpc_plus_layout,
-		.has_ao			= 1,
-		.ai_range_table		= &range_labpc_plus_ai,
-		.ai_range_code		= labpc_plus_ai_gain_bits,
-		.ai_range_is_unipolar	= labpc_plus_is_unipolar,
-	},
-#ifdef CONFIG_COMEDI_PCI_DRIVERS
-	{
-		.name			= "pci-1200",
-		.device_id		= 0x161,
-		.ai_speed		= 10000,
-		.bustype		= pci_bustype,
-		.register_layout	= labpc_1200_layout,
-		.has_ao			= 1,
-		.ai_range_table		= &range_labpc_1200_ai,
-		.ai_range_code		= labpc_1200_ai_gain_bits,
-		.ai_range_is_unipolar	= labpc_1200_is_unipolar,
-		.ai_scan_up		= 1,
-		.memory_mapped_io	= 1,
-	},
-#endif
-};
-
-/* size in bytes of dma buffer */
-static const int dma_buffer_size = 0xff00;
 /* 2 bytes per sample */
 static const int sample_size = 2;
 
@@ -476,8 +366,8 @@ static unsigned int labpc_suggest_transfer_size(const struct comedi_cmd *cmd)
 	size = (freq / 3) * sample_size;
 
 	/* set a minimum and maximum size allowed */
-	if (size > dma_buffer_size)
-		size = dma_buffer_size - dma_buffer_size % sample_size;
+	if (size > LABPC_DMA_BUF_SZ)
+		size = LABPC_DMA_BUF_SZ - LABPC_DMA_BUF_SZ % sample_size;
 	else if (size < sample_size)
 		size = sample_size;
 
@@ -1669,35 +1559,16 @@ static int labpc_eeprom_read_insn(struct comedi_device *dev,
 	return 1;
 }
 
-int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
-			unsigned int irq, unsigned int dma_chan)
+int labpc_common_attach(struct comedi_device *dev,
+			unsigned int irq, unsigned long irq_flags)
 {
 	const struct labpc_boardinfo *thisboard = comedi_board(dev);
 	struct labpc_private *devpriv = dev->private;
 	struct comedi_subdevice *s;
 	int i;
-	unsigned long isr_flags;
-#ifdef CONFIG_ISA_DMA_API
-	unsigned long dma_flags;
-#endif
 	short lsb, msb;
 	int ret;
 
-	dev_info(dev->class_dev, "ni_labpc: %s\n", thisboard->name);
-	if (iobase == 0) {
-		dev_err(dev->class_dev, "io base address is zero!\n");
-		return -EINVAL;
-	}
-	/*  request io regions for isa boards */
-	if (thisboard->bustype == isa_bustype) {
-		/* check if io addresses are available */
-		if (!request_region(iobase, LABPC_SIZE, DRV_NAME)) {
-			dev_err(dev->class_dev, "I/O port conflict\n");
-			return -EIO;
-		}
-	}
-	dev->iobase = iobase;
-
 	if (thisboard->memory_mapped_io) {
 		devpriv->read_byte = labpc_readb;
 		devpriv->write_byte = labpc_writeb;
@@ -1717,48 +1588,13 @@ int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
 				    dev->iobase + COMMAND6_REG);
 	}
 
-	/* grab our IRQ */
 	if (irq) {
-		isr_flags = 0;
-		if (thisboard->bustype == pci_bustype
-		    || thisboard->bustype == pcmcia_bustype)
-			isr_flags |= IRQF_SHARED;
-		if (request_irq(irq, labpc_interrupt, isr_flags,
-				DRV_NAME, dev)) {
-			dev_err(dev->class_dev, "unable to allocate irq %u\n",
-				irq);
-			return -EINVAL;
-		}
-	}
-	dev->irq = irq;
-
-#ifdef CONFIG_ISA_DMA_API
-	/* grab dma channel */
-	if (dma_chan > 3) {
-		dev_err(dev->class_dev, "invalid dma channel %u\n", dma_chan);
-		return -EINVAL;
-	} else if (dma_chan) {
-		/* allocate dma buffer */
-		devpriv->dma_buffer = kmalloc(dma_buffer_size,
-					      GFP_KERNEL | GFP_DMA);
-		if (devpriv->dma_buffer == NULL)
-			return -ENOMEM;
-
-		if (request_dma(dma_chan, DRV_NAME)) {
-			dev_err(dev->class_dev,
-				"failed to allocate dma channel %u\n",
-				dma_chan);
-			return -EINVAL;
-		}
-		devpriv->dma_chan = dma_chan;
-		dma_flags = claim_dma_lock();
-		disable_dma(devpriv->dma_chan);
-		set_dma_mode(devpriv->dma_chan, DMA_MODE_READ);
-		release_dma_lock(dma_flags);
+		ret = request_irq(irq, labpc_interrupt, irq_flags,
+				  dev->board_name, dev);
+		if (ret)
+			return ret;
+		dev->irq = irq;
 	}
-#endif
-
-	dev->board_name = thisboard->name;
 
 	ret = comedi_alloc_subdevices(dev, 5);
 	if (ret)
@@ -1850,172 +1686,25 @@ int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
 }
 EXPORT_SYMBOL_GPL(labpc_common_attach);
 
-static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
-{
-	const struct labpc_boardinfo *thisboard = comedi_board(dev);
-	struct labpc_private *devpriv;
-	unsigned long iobase = 0;
-	unsigned int irq = 0;
-	unsigned int dma_chan = 0;
-
-	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
-	if (!devpriv)
-		return -ENOMEM;
-	dev->private = devpriv;
-
-	/* get base address, irq etc. based on bustype */
-	switch (thisboard->bustype) {
-	case isa_bustype:
-#ifdef CONFIG_ISA_DMA_API
-		iobase = it->options[0];
-		irq = it->options[1];
-		dma_chan = it->options[2];
-#else
-		dev_err(dev->class_dev,
-			"ni_labpc driver has not been built with ISA DMA support.\n");
-		return -EINVAL;
-#endif
-		break;
-	case pci_bustype:
-#ifdef CONFIG_COMEDI_PCI_DRIVERS
-		dev_err(dev->class_dev,
-			"manual configuration of PCI board '%s' is not supported\n",
-			thisboard->name);
-		return -EINVAL;
-#else
-		dev_err(dev->class_dev,
-			"ni_labpc driver has not been built with PCI support.\n");
-		return -EINVAL;
-#endif
-		break;
-	default:
-		dev_err(dev->class_dev,
-			"ni_labpc: bug! couldn't determine board type\n");
-		return -EINVAL;
-		break;
-	}
-
-	return labpc_common_attach(dev, iobase, irq, dma_chan);
-}
-
-static const struct labpc_boardinfo *
-labpc_pci_find_boardinfo(struct pci_dev *pcidev)
-{
-	unsigned int device_id = pcidev->device;
-	unsigned int n;
-
-	for (n = 0; n < ARRAY_SIZE(labpc_boards); n++) {
-		const struct labpc_boardinfo *board = &labpc_boards[n];
-		if (board->bustype == pci_bustype &&
-		    board->device_id == device_id)
-			return board;
-	}
-	return NULL;
-}
-
-static int labpc_auto_attach(struct comedi_device *dev,
-				       unsigned long context_unused)
-{
-	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
-	struct labpc_private *devpriv;
-	unsigned long iobase;
-	unsigned int irq;
-	int ret;
-
-	if (!IS_ENABLED(CONFIG_COMEDI_PCI_DRIVERS))
-		return -ENODEV;
-
-	ret = comedi_pci_enable(dev);
-	if (ret)
-		return ret;
-
-	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
-	if (!devpriv)
-		return -ENOMEM;
-	dev->private = devpriv;
-
-	dev->board_ptr = labpc_pci_find_boardinfo(pcidev);
-	if (!dev->board_ptr)
-		return -ENODEV;
-	devpriv->mite = mite_alloc(pcidev);
-	if (!devpriv->mite)
-		return -ENOMEM;
-	ret = mite_setup(devpriv->mite);
-	if (ret < 0)
-		return ret;
-	iobase = (unsigned long)devpriv->mite->daq_io_addr;
-	irq = mite_irq(devpriv->mite);
-	return labpc_common_attach(dev, iobase, irq, 0);
-}
-
 void labpc_common_detach(struct comedi_device *dev)
 {
-	const struct labpc_boardinfo *thisboard = comedi_board(dev);
-	struct labpc_private *devpriv = dev->private;
-	struct comedi_subdevice *s;
-
-	if (!thisboard)
-		return;
-	if (dev->subdevices) {
-		s = &dev->subdevices[2];
-		subdev_8255_cleanup(dev, s);
-	}
-#ifdef CONFIG_ISA_DMA_API
-	/* only free stuff if it has been allocated by _attach */
-	kfree(devpriv->dma_buffer);
-	if (devpriv->dma_chan)
-		free_dma(devpriv->dma_chan);
-#endif
+	if (dev->subdevices)
+		subdev_8255_cleanup(dev, &dev->subdevices[2]);
 	if (dev->irq)
 		free_irq(dev->irq, dev);
-	if (thisboard->bustype == isa_bustype && dev->iobase)
-		release_region(dev->iobase, LABPC_SIZE);
-#ifdef CONFIG_COMEDI_PCI_DRIVERS
-	if (devpriv->mite) {
-		mite_unsetup(devpriv->mite);
-		mite_free(devpriv->mite);
-	}
-	if (thisboard->bustype == pci_bustype)
-		comedi_pci_disable(dev);
-#endif
 }
 EXPORT_SYMBOL_GPL(labpc_common_detach);
 
-static struct comedi_driver labpc_driver = {
-	.driver_name	= DRV_NAME,
-	.module		= THIS_MODULE,
-	.attach		= labpc_attach,
-	.auto_attach	= labpc_auto_attach,
-	.detach		= labpc_common_detach,
-	.num_names	= ARRAY_SIZE(labpc_boards),
-	.board_name	= &labpc_boards[0].name,
-	.offset		= sizeof(struct labpc_boardinfo),
-};
-
-#ifdef CONFIG_COMEDI_PCI_DRIVERS
-static DEFINE_PCI_DEVICE_TABLE(labpc_pci_table) = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_NI, 0x161) },
-	{ 0 }
-};
-MODULE_DEVICE_TABLE(pci, labpc_pci_table);
-
-static int labpc_pci_probe(struct pci_dev *dev,
-			   const struct pci_device_id *id)
+static int __init labpc_init(void)
 {
-	return comedi_pci_auto_config(dev, &labpc_driver, id->driver_data);
+	return 0;
 }
+module_init(labpc_init);
 
-static struct pci_driver labpc_pci_driver = {
-	.name		= DRV_NAME,
-	.id_table	= labpc_pci_table,
-	.probe		= labpc_pci_probe,
-	.remove		= comedi_pci_auto_unconfig,
-};
-module_comedi_pci_driver(labpc_driver, labpc_pci_driver);
-#else
-module_comedi_driver(labpc_driver);
-#endif
-
+static void __exit labpc_exit(void)
+{
+}
+module_exit(labpc_exit);
 
 MODULE_AUTHOR("Comedi http://www.comedi.org";);
 MODULE_DESCRIPTION("Comedi low-level driver");
diff --git a/drivers/staging/comedi/drivers/ni_labpc.h b/drivers/staging/comedi/drivers/ni_labpc.h
index 6be3a11..1a78948 100644
--- a/drivers/staging/comedi/drivers/ni_labpc.h
+++ b/drivers/staging/comedi/drivers/ni_labpc.h
@@ -24,8 +24,9 @@
 #ifndef _NI_LABPC_H
 #define _NI_LABPC_H
 
-#define EEPROM_SIZE	256	/*  256 byte eeprom */
-#define NUM_AO_CHAN	2	/*  boards have two analog output channels */
+#define LABPC_DMA_BUF_SZ	0xff00	/* size in bytes of dma buffer */
+#define EEPROM_SIZE		256	/* 256 byte eeprom */
+#define NUM_AO_CHAN		2	/* two analog output channels */
 
 enum labpc_bustype { isa_bustype, pci_bustype, pcmcia_bustype };
 enum labpc_register_layout { labpc_plus_layout, labpc_1200_layout };
@@ -101,8 +102,8 @@ struct labpc_private {
 	void (*write_byte) (unsigned int byte, unsigned long address);
 };
 
-int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
-			unsigned int irq, unsigned int dma);
+int labpc_common_attach(struct comedi_device *dev,
+			unsigned int irq, unsigned long irq_flags);
 void labpc_common_detach(struct comedi_device *dev);
 
 extern const int labpc_1200_is_unipolar[];
diff --git a/drivers/staging/comedi/drivers/ni_labpc_cs.c b/drivers/staging/comedi/drivers/ni_labpc_cs.c
index 5da87ee..40b771a 100644
--- a/drivers/staging/comedi/drivers/ni_labpc_cs.c
+++ b/drivers/staging/comedi/drivers/ni_labpc_cs.c
@@ -1,78 +1,59 @@
 /*
-    comedi/drivers/ni_labpc_cs.c
-    Driver for National Instruments daqcard-1200 boards
-    Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
-
-    PCMCIA crap is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13
-    from the pcmcia package.
-    The initial developer of the pcmcia dummy_cs.c code is David A. Hinds
-    <dahinds@xxxxxxxxxxxxxxxxxxxxx>.  Portions created by David A. Hinds
-    are Copyright (C) 1999 David A. Hinds.
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-************************************************************************
-*/
-/*
-Driver: ni_labpc_cs
-Description: National Instruments Lab-PC (& compatibles)
-Author: Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
-Devices: [National Instruments] DAQCard-1200 (daqcard-1200)
-Status: works
-
-Thanks go to Fredrik Lingvall for much testing and perseverance in
-helping to debug daqcard-1200 support.
-
-The 1200 series boards have onboard calibration dacs for correcting
-analog input/output offsets and gains.  The proper settings for these
-caldacs are stored on the board's eeprom.  To read the caldac values
-from the eeprom and store them into a file that can be then be used by
-comedilib, use the comedi_calibrate program.
-
-Configuration options:
-  none
-
-The daqcard-1200 has quirky chanlist requirements
-when scanning multiple channels.  Multiple channel scan
-sequence must start at highest channel, then decrement down to
-channel 0.  Chanlists consisting of all one channel
-are also legal, and allow you to pace conversions in bursts.
-
-*/
+ * comedi/drivers/ni_labpc_cs.c
+ * Driver for National Instruments daqcard-1200 boards
+ * Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ *
+ * PCMCIA crap is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13
+ * from the pcmcia package.
+ * The initial developer of the pcmcia dummy_cs.c code is David A. Hinds
+ * <dahinds@xxxxxxxxxxxxxxxxxxxxx>.  Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
 
 /*
-
-NI manuals:
-340988a (daqcard-1200)
-
-*/
-
-#include "../comedidev.h"
-
-#include <linux/delay.h>
+ * Driver: ni_labpc_cs
+ * Description: National Instruments Lab-PC (& compatibles)
+ * Devices: (National Instruments) DAQCard-1200 [daqcard-1200]
+ * Author: Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ * Status: works
+ *
+ * Configuration Options: not applicable, uses PCMCIA auto config
+ *
+ * Thanks go to Fredrik Lingvall for much testing and perseverance in
+ * helping to debug daqcard-1200 support.
+ *
+ * The daqcard-1200 has quirky chanlist requirements when scanning
+ * multiple channels. Multiple channel scan sequence must start at
+ * highest channel, then decrement down to channel 0. Chanlists
+ * consisting of all one channel are also legal, and allow you to
+ * pace conversions in bursts.
+ */
+
+#include <linux/interrupt.h>
 #include <linux/slab.h>
 
-#include "8253.h"
-#include "8255.h"
-#include "comedi_fc.h"
-#include "ni_labpc.h"
-
 #include <pcmcia/cistpl.h>
 #include <pcmcia/cisreg.h>
 #include <pcmcia/ds.h>
 
+#include "../comedidev.h"
+
+#include "ni_labpc.h"
+
 static const struct labpc_boardinfo labpc_cs_boards[] = {
 	{
 		.name			= "daqcard-1200",
@@ -91,11 +72,13 @@ static int labpc_auto_attach(struct comedi_device *dev,
 			     unsigned long context)
 {
 	struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
+	const struct labpc_boardinfo *board = &labpc_cs_boards[0];
 	struct labpc_private *devpriv;
 	int ret;
 
 	/* The ni_labpc driver needs the board_ptr */
-	dev->board_ptr = &labpc_cs_boards[0];
+	dev->board_ptr = board;
+	dev->board_name = board->name;
 
 	link->config_flags |= CONF_AUTO_SET_IO |
 			      CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
@@ -112,7 +95,7 @@ static int labpc_auto_attach(struct comedi_device *dev,
 		return -ENOMEM;
 	dev->private = devpriv;
 
-	return labpc_common_attach(dev, dev->iobase, link->irq, 0);
+	return labpc_common_attach(dev, link->irq, IRQF_SHARED);
 }
 
 static void labpc_detach(struct comedi_device *dev)
diff --git a/drivers/staging/comedi/drivers/ni_labpc_isa.c b/drivers/staging/comedi/drivers/ni_labpc_isa.c
new file mode 100644
index 0000000..fc9dae6
--- /dev/null
+++ b/drivers/staging/comedi/drivers/ni_labpc_isa.c
@@ -0,0 +1,194 @@
+/*
+ * comedi/drivers/ni_labpc_isa.c
+ * Driver for National Instruments Lab-PC series boards and compatibles
+ * Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Driver: ni_labpc_isa
+ * Description: National Instruments Lab-PC compatible boards
+ * Devices: (National Instruments) Lab-PC-1200 [lab-pc-1200]
+ *	    (National Instruments) Lab-PC-1200AI [lab-pc-1200ai]
+ *	    (National Instruments) Lab-PC+ [lab-pc+]
+ * Author: Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ * Status: works
+ *
+ * Kernel-level ISA plug-and-play support for the lab-pc-1200 boards has
+ * not yet been added to the driver, mainly due to the fact that I don't
+ * know the device id numbers. If you have one of these boards, please
+ * file a bug report at http://comedi.org/ so I can get the necessary
+ * information from you.
+ *
+ * Configuration options - ISA boards:
+ *   [0] - I/O port base address
+ *   [1] - IRQ (optional, required for timed or externally triggered conversions)
+ *   [2] - DMA channel (optional)
+ */
+
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+
+#include "../comedidev.h"
+
+#include <asm/dma.h>
+
+#include "ni_labpc.h"
+
+#define LABPC_SIZE		32	/* size of io region used by board */
+
+static const int labpc_plus_is_unipolar[] = {
+	0, 0, 0, 0, 0, 0, 0, 0,
+	1, 1, 1, 1, 1, 1, 1, 1,
+};
+
+static const int labpc_plus_ai_gain_bits[] = {
+	0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
+	0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
+};
+
+static const struct comedi_lrange range_labpc_plus_ai = {
+	16, {
+		BIP_RANGE(5),
+		BIP_RANGE(4),
+		BIP_RANGE(2.5),
+		BIP_RANGE(1),
+		BIP_RANGE(0.5),
+		BIP_RANGE(0.25),
+		BIP_RANGE(0.1),
+		BIP_RANGE(0.05),
+		UNI_RANGE(10),
+		UNI_RANGE(8),
+		UNI_RANGE(5),
+		UNI_RANGE(2),
+		UNI_RANGE(1),
+		UNI_RANGE(0.5),
+		UNI_RANGE(0.2),
+		UNI_RANGE(0.1)
+	}
+};
+
+static const struct labpc_boardinfo labpc_boards[] = {
+	{
+		.name			= "lab-pc-1200",
+		.ai_speed		= 10000,
+		.bustype		= isa_bustype,
+		.register_layout	= labpc_1200_layout,
+		.has_ao			= 1,
+		.ai_range_table		= &range_labpc_1200_ai,
+		.ai_range_code		= labpc_1200_ai_gain_bits,
+		.ai_range_is_unipolar	= labpc_1200_is_unipolar,
+		.ai_scan_up		= 1,
+	}, {
+		.name			= "lab-pc-1200ai",
+		.ai_speed		= 10000,
+		.bustype		= isa_bustype,
+		.register_layout	= labpc_1200_layout,
+		.ai_range_table		= &range_labpc_1200_ai,
+		.ai_range_code		= labpc_1200_ai_gain_bits,
+		.ai_range_is_unipolar	= labpc_1200_is_unipolar,
+		.ai_scan_up		= 1,
+	}, {
+		.name			= "lab-pc+",
+		.ai_speed		= 12000,
+		.bustype		= isa_bustype,
+		.register_layout	= labpc_plus_layout,
+		.has_ao			= 1,
+		.ai_range_table		= &range_labpc_plus_ai,
+		.ai_range_code		= labpc_plus_ai_gain_bits,
+		.ai_range_is_unipolar	= labpc_plus_is_unipolar,
+	},
+};
+
+static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
+{
+	const struct labpc_boardinfo *thisboard = comedi_board(dev);
+	struct labpc_private *devpriv;
+	unsigned long iobase = it->options[0];
+	unsigned int irq = it->options[1];
+	unsigned int dma_chan = it->options[2];
+	unsigned long dma_flags;
+	int ret;
+
+	dev->board_name = thisboard->name;
+
+	if (!request_region(iobase, LABPC_SIZE, dev->board_name))
+		return -EIO;
+	dev->iobase = iobase;
+
+	if (dma_chan > 3)
+		return -EINVAL;
+
+	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
+	if (!devpriv)
+		return -ENOMEM;
+	dev->private = devpriv;
+
+	ret = labpc_common_attach(dev, irq, 0);
+	if (ret)
+		return ret;
+
+	if (dma_chan) {
+		devpriv->dma_buffer = kmalloc(LABPC_DMA_BUF_SZ,
+					      GFP_KERNEL | GFP_DMA);
+		if (!devpriv->dma_buffer)
+			return -ENOMEM;
+
+		if (request_dma(dma_chan, dev->board_name)) {
+			dev_err(dev->class_dev,
+				"failed to allocate dma channel %u\n",
+				dma_chan);
+			return -EINVAL;
+		}
+		devpriv->dma_chan = dma_chan;
+		dma_flags = claim_dma_lock();
+		disable_dma(devpriv->dma_chan);
+		set_dma_mode(devpriv->dma_chan, DMA_MODE_READ);
+		release_dma_lock(dma_flags);
+	}
+
+	return 0;
+}
+
+static void labpc_detach(struct comedi_device *dev)
+{
+	struct labpc_private *devpriv = dev->private;
+
+	labpc_common_detach(dev);
+
+	if (devpriv) {
+		kfree(devpriv->dma_buffer);
+		if (devpriv->dma_chan)
+			free_dma(devpriv->dma_chan);
+	}
+	if (dev->iobase)
+		release_region(dev->iobase, LABPC_SIZE);
+}
+
+static struct comedi_driver labpc_driver = {
+	.driver_name	= "ni_labpc",
+	.module		= THIS_MODULE,
+	.attach		= labpc_attach,
+	.detach		= labpc_detach,
+	.num_names	= ARRAY_SIZE(labpc_boards),
+	.board_name	= &labpc_boards[0].name,
+	.offset		= sizeof(struct labpc_boardinfo),
+};
+module_comedi_driver(labpc_driver);
+
+MODULE_AUTHOR("Comedi http://www.comedi.org";);
+MODULE_DESCRIPTION("Comedi low-level driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/comedi/drivers/ni_labpc_pci.c b/drivers/staging/comedi/drivers/ni_labpc_pci.c
new file mode 100644
index 0000000..e1a62a5
--- /dev/null
+++ b/drivers/staging/comedi/drivers/ni_labpc_pci.c
@@ -0,0 +1,140 @@
+/*
+ * comedi/drivers/ni_labpc_pci.c
+ * Driver for National Instruments Lab-PC PCI-1200
+ * Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Driver: ni_labpc_pci
+ * Description: National Instruments Lab-PC PCI-1200
+ * Devices: (National Instruments) PCI-1200 [ni_pci-1200]
+ * Author: Frank Mori Hess <fmhess@xxxxxxxxxxxxxxxxxxxxx>
+ * Status: works
+ *
+ * This is the PCI-specific support split off from the ni_labpc driver.
+ *
+ * Configuration Options: not applicable, uses PCI auto config
+ */
+
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+
+#include "../comedidev.h"
+
+#include "mite.h"
+#include "ni_labpc.h"
+
+enum labpc_pci_boardid {
+	BOARD_NI_PCI1200,
+};
+
+static const struct labpc_boardinfo labpc_pci_boards[] = {
+	[BOARD_NI_PCI1200] = {
+		.name			= "ni_pci-1200",
+		.device_id		= 0x161,
+		.ai_speed		= 10000,
+		.bustype		= pci_bustype,
+		.register_layout	= labpc_1200_layout,
+		.has_ao			= 1,
+		.ai_range_table		= &range_labpc_1200_ai,
+		.ai_range_code		= labpc_1200_ai_gain_bits,
+		.ai_range_is_unipolar	= labpc_1200_is_unipolar,
+		.ai_scan_up		= 1,
+		.memory_mapped_io	= 1,
+	},
+};
+
+static int labpc_pci_auto_attach(struct comedi_device *dev,
+				 unsigned long context)
+{
+	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
+	const struct labpc_boardinfo *board = NULL;
+	struct labpc_private *devpriv;
+	int ret;
+
+	if (context < ARRAY_SIZE(labpc_pci_boards))
+		board = &labpc_pci_boards[context];
+	if (!board)
+		return -ENODEV;
+	dev->board_ptr = board;
+	dev->board_name = board->name;
+
+	ret = comedi_pci_enable(dev);
+	if (ret)
+		return ret;
+
+	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
+	if (!devpriv)
+		return -ENOMEM;
+	dev->private = devpriv;
+
+	devpriv->mite = mite_alloc(pcidev);
+	if (!devpriv->mite)
+		return -ENOMEM;
+	ret = mite_setup(devpriv->mite);
+	if (ret < 0)
+		return ret;
+	dev->iobase = (unsigned long)devpriv->mite->daq_io_addr;
+
+	return labpc_common_attach(dev, mite_irq(devpriv->mite), IRQF_SHARED);
+}
+
+static void labpc_pci_detach(struct comedi_device *dev)
+{
+	struct labpc_private *devpriv = dev->private;
+
+	labpc_common_detach(dev);
+
+	if (devpriv && devpriv->mite) {
+		mite_unsetup(devpriv->mite);
+		mite_free(devpriv->mite);
+	}
+	comedi_pci_disable(dev);
+}
+
+static struct comedi_driver labpc_pci_comedi_driver = {
+	.driver_name	= "labpc_pci",
+	.module		= THIS_MODULE,
+	.auto_attach	= labpc_pci_auto_attach,
+	.detach		= labpc_pci_detach,
+};
+
+static DEFINE_PCI_DEVICE_TABLE(labpc_pci_table) = {
+	{ PCI_VDEVICE(NI, 0x161), BOARD_NI_PCI1200 },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(pci, labpc_pci_table);
+
+static int labpc_pci_probe(struct pci_dev *dev,
+			   const struct pci_device_id *id)
+{
+	return comedi_pci_auto_config(dev, &labpc_pci_comedi_driver,
+				      id->driver_data);
+}
+
+static struct pci_driver labpc_pci_driver = {
+	.name		= "labpc_pci",
+	.id_table	= labpc_pci_table,
+	.probe		= labpc_pci_probe,
+	.remove		= comedi_pci_auto_unconfig,
+};
+module_comedi_pci_driver(labpc_pci_comedi_driver, labpc_pci_driver);
+
+MODULE_DESCRIPTION("Comedi: National Instruments Lab-PC PCI-1200 driver");
+MODULE_AUTHOR("Comedi http://www.comedi.org";);
+MODULE_LICENSE("GPL");
-- 
1.8.1.4

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