staging: comedi: dt3000: use the comedi_device 'mmio' member

Use the new 'mmio' member in the comedi_device for the ioremap'ed
base address.

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>

1 files changed, 44 insertions, 60 deletions

diff --git a/drivers/staging/comedi/drivers/dt3000.c b/drivers/staging/comedi/drivers/dt3000.c
index bf5a05c64fe2..56e21cc2dcfe 100644
--- a/drivers/staging/comedi/drivers/dt3000.c
+++ b/drivers/staging/comedi/drivers/dt3000.c
@@ -244,7 +244,6 @@ static const struct dt3k_boardtype dt3k_boardtypes[] = {
 #define DT3000_CHANNEL_MODE_DI		1
 
 struct dt3k_private {
-	void __iomem *io_addr;
 	unsigned int lock;
 	unsigned int ao_readback[2];
 	unsigned int ai_front;
@@ -255,14 +254,13 @@ struct dt3k_private {
 
 static void dt3k_send_cmd(struct comedi_device *dev, unsigned int cmd)
 {
-	struct dt3k_private *devpriv = dev->private;
 	int i;
 	unsigned int status = 0;
 
-	writew(cmd, devpriv->io_addr + DPR_Command_Mbx);
+	writew(cmd, dev->mmio + DPR_Command_Mbx);
 
 	for (i = 0; i < TIMEOUT; i++) {
-		status = readw(devpriv->io_addr + DPR_Command_Mbx);
+		status = readw(dev->mmio + DPR_Command_Mbx);
 		if ((status & DT3000_COMPLETION_MASK) != DT3000_NOTPROCESSED)
 			break;
 		udelay(1);
@@ -277,28 +275,24 @@ static unsigned int dt3k_readsingle(struct comedi_device *dev,
 				    unsigned int subsys, unsigned int chan,
 				    unsigned int gain)
 {
-	struct dt3k_private *devpriv = dev->private;
-
-	writew(subsys, devpriv->io_addr + DPR_SubSys);
+	writew(subsys, dev->mmio + DPR_SubSys);
 
-	writew(chan, devpriv->io_addr + DPR_Params(0));
-	writew(gain, devpriv->io_addr + DPR_Params(1));
+	writew(chan, dev->mmio + DPR_Params(0));
+	writew(gain, dev->mmio + DPR_Params(1));
 
 	dt3k_send_cmd(dev, CMD_READSINGLE);
 
-	return readw(devpriv->io_addr + DPR_Params(2));
+	return readw(dev->mmio + DPR_Params(2));
 }
 
 static void dt3k_writesingle(struct comedi_device *dev, unsigned int subsys,
 			     unsigned int chan, unsigned int data)
 {
-	struct dt3k_private *devpriv = dev->private;
-
-	writew(subsys, devpriv->io_addr + DPR_SubSys);
+	writew(subsys, dev->mmio + DPR_SubSys);
 
-	writew(chan, devpriv->io_addr + DPR_Params(0));
-	writew(0, devpriv->io_addr + DPR_Params(1));
-	writew(data, devpriv->io_addr + DPR_Params(2));
+	writew(chan, dev->mmio + DPR_Params(0));
+	writew(0, dev->mmio + DPR_Params(1));
+	writew(data, dev->mmio + DPR_Params(2));
 
 	dt3k_send_cmd(dev, CMD_WRITESINGLE);
 }
@@ -313,7 +307,7 @@ static void dt3k_ai_empty_fifo(struct comedi_device *dev,
 	int i;
 	unsigned short data;
 
-	front = readw(devpriv->io_addr + DPR_AD_Buf_Front);
+	front = readw(dev->mmio + DPR_AD_Buf_Front);
 	count = front - devpriv->ai_front;
 	if (count < 0)
 		count += AI_FIFO_DEPTH;
@@ -321,7 +315,7 @@ static void dt3k_ai_empty_fifo(struct comedi_device *dev,
 	rear = devpriv->ai_rear;
 
 	for (i = 0; i < count; i++) {
-		data = readw(devpriv->io_addr + DPR_ADC_buffer + rear);
+		data = readw(dev->mmio + DPR_ADC_buffer + rear);
 		comedi_buf_put(s, data);
 		rear++;
 		if (rear >= AI_FIFO_DEPTH)
@@ -329,17 +323,16 @@ static void dt3k_ai_empty_fifo(struct comedi_device *dev,
 	}
 
 	devpriv->ai_rear = rear;
-	writew(rear, devpriv->io_addr + DPR_AD_Buf_Rear);
+	writew(rear, dev->mmio + DPR_AD_Buf_Rear);
 }
 
-static int dt3k_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
+static int dt3k_ai_cancel(struct comedi_device *dev,
+			  struct comedi_subdevice *s)
 {
-	struct dt3k_private *devpriv = dev->private;
-
-	writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
+	writew(SUBS_AI, dev->mmio + DPR_SubSys);
 	dt3k_send_cmd(dev, CMD_STOP);
 
-	writew(0, devpriv->io_addr + DPR_Int_Mask);
+	writew(0, dev->mmio + DPR_Int_Mask);
 
 	return 0;
 }
@@ -351,14 +344,13 @@ static int debug_n_ints;
 static irqreturn_t dt3k_interrupt(int irq, void *d)
 {
 	struct comedi_device *dev = d;
-	struct dt3k_private *devpriv = dev->private;
 	struct comedi_subdevice *s = dev->read_subdev;
 	unsigned int status;
 
 	if (!dev->attached)
 		return IRQ_NONE;
 
-	status = readw(devpriv->io_addr + DPR_Intr_Flag);
+	status = readw(dev->mmio + DPR_Intr_Flag);
 
 	if (status & DT3000_ADFULL) {
 		dt3k_ai_empty_fifo(dev, s);
@@ -491,7 +483,6 @@ static int dt3k_ai_cmdtest(struct comedi_device *dev,
 
 static int dt3k_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 {
-	struct dt3k_private *devpriv = dev->private;
 	struct comedi_cmd *cmd = &s->async->cmd;
 	int i;
 	unsigned int chan, range, aref;
@@ -503,41 +494,40 @@ static int dt3k_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 		chan = CR_CHAN(cmd->chanlist[i]);
 		range = CR_RANGE(cmd->chanlist[i]);
 
-		writew((range << 6) | chan,
-		       devpriv->io_addr + DPR_ADC_buffer + i);
+		writew((range << 6) | chan, dev->mmio + DPR_ADC_buffer + i);
 	}
 	aref = CR_AREF(cmd->chanlist[0]);
 
-	writew(cmd->scan_end_arg, devpriv->io_addr + DPR_Params(0));
+	writew(cmd->scan_end_arg, dev->mmio + DPR_Params(0));
 
 	if (cmd->convert_src == TRIG_TIMER) {
 		divider = dt3k_ns_to_timer(50, &cmd->convert_arg, cmd->flags);
-		writew((divider >> 16), devpriv->io_addr + DPR_Params(1));
-		writew((divider & 0xffff), devpriv->io_addr + DPR_Params(2));
+		writew((divider >> 16), dev->mmio + DPR_Params(1));
+		writew((divider & 0xffff), dev->mmio + DPR_Params(2));
 	}
 
 	if (cmd->scan_begin_src == TRIG_TIMER) {
 		tscandiv = dt3k_ns_to_timer(100, &cmd->scan_begin_arg,
 					    cmd->flags);
-		writew((tscandiv >> 16), devpriv->io_addr + DPR_Params(3));
-		writew((tscandiv & 0xffff), devpriv->io_addr + DPR_Params(4));
+		writew((tscandiv >> 16), dev->mmio + DPR_Params(3));
+		writew((tscandiv & 0xffff), dev->mmio + DPR_Params(4));
 	}
 
 	mode = DT3000_AD_RETRIG_INTERNAL | 0 | 0;
-	writew(mode, devpriv->io_addr + DPR_Params(5));
-	writew(aref == AREF_DIFF, devpriv->io_addr + DPR_Params(6));
+	writew(mode, dev->mmio + DPR_Params(5));
+	writew(aref == AREF_DIFF, dev->mmio + DPR_Params(6));
 
-	writew(AI_FIFO_DEPTH / 2, devpriv->io_addr + DPR_Params(7));
+	writew(AI_FIFO_DEPTH / 2, dev->mmio + DPR_Params(7));
 
-	writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
+	writew(SUBS_AI, dev->mmio + DPR_SubSys);
 	dt3k_send_cmd(dev, CMD_CONFIG);
 
 	writew(DT3000_ADFULL | DT3000_ADSWERR | DT3000_ADHWERR,
-	       devpriv->io_addr + DPR_Int_Mask);
+	       dev->mmio + DPR_Int_Mask);
 
 	debug_n_ints = 0;
 
-	writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
+	writew(SUBS_AI, dev->mmio + DPR_SubSys);
 	dt3k_send_cmd(dev, CMD_START);
 
 	return 0;
@@ -593,16 +583,14 @@ static int dt3k_ao_insn_read(struct comedi_device *dev,
 
 static void dt3k_dio_config(struct comedi_device *dev, int bits)
 {
-	struct dt3k_private *devpriv = dev->private;
-
 	/* XXX */
-	writew(SUBS_DOUT, devpriv->io_addr + DPR_SubSys);
+	writew(SUBS_DOUT, dev->mmio + DPR_SubSys);
 
-	writew(bits, devpriv->io_addr + DPR_Params(0));
+	writew(bits, dev->mmio + DPR_Params(0));
 #if 0
 	/* don't know */
-	writew(0, devpriv->io_addr + DPR_Params(1));
-	writew(0, devpriv->io_addr + DPR_Params(2));
+	writew(0, dev->mmio + DPR_Params(1));
+	writew(0, dev->mmio + DPR_Params(2));
 #endif
 
 	dt3k_send_cmd(dev, CMD_CONFIG);
@@ -646,20 +634,20 @@ static int dt3k_dio_insn_bits(struct comedi_device *dev,
 
 static int dt3k_mem_insn_read(struct comedi_device *dev,
 			      struct comedi_subdevice *s,
-			      struct comedi_insn *insn, unsigned int *data)
+			      struct comedi_insn *insn,
+			      unsigned int *data)
 {
-	struct dt3k_private *devpriv = dev->private;
 	unsigned int addr = CR_CHAN(insn->chanspec);
 	int i;
 
 	for (i = 0; i < insn->n; i++) {
-		writew(SUBS_MEM, devpriv->io_addr + DPR_SubSys);
-		writew(addr, devpriv->io_addr + DPR_Params(0));
-		writew(1, devpriv->io_addr + DPR_Params(1));
+		writew(SUBS_MEM, dev->mmio + DPR_SubSys);
+		writew(addr, dev->mmio + DPR_Params(0));
+		writew(1, dev->mmio + DPR_Params(1));
 
 		dt3k_send_cmd(dev, CMD_READCODE);
 
-		data[i] = readw(devpriv->io_addr + DPR_Params(2));
+		data[i] = readw(dev->mmio + DPR_Params(2));
 	}
 
 	return i;
@@ -689,8 +677,8 @@ static int dt3000_auto_attach(struct comedi_device *dev,
 	if (ret < 0)
 		return ret;
 
-	devpriv->io_addr = pci_ioremap_bar(pcidev, 0);
-	if (!devpriv->io_addr)
+	dev->mmio = pci_ioremap_bar(pcidev, 0);
+	if (!dev->mmio)
 		return -ENOMEM;
 
 	if (pcidev->irq) {
@@ -764,14 +752,10 @@ static int dt3000_auto_attach(struct comedi_device *dev,
 
 static void dt3000_detach(struct comedi_device *dev)
 {
-	struct dt3k_private *devpriv = dev->private;
-
 	if (dev->irq)
 		free_irq(dev->irq, dev);
-	if (devpriv) {
-		if (devpriv->io_addr)
-			iounmap(devpriv->io_addr);
-	}
+	if (dev->mmio)
+		iounmap(dev->mmio);
 	comedi_pci_disable(dev);
 }