The 8255 driver uses an (*io) callback to read/write the registers
of the 8255 device. The default callback provided by the driver uses
inb()/outb() calls to access to registers based on an 'iobase' that
was initialized during the subdev_8255_init() and a 'port' value.
The users of this module can optionally provide a custom (*io) callback
to handle the read/write in another manner.
Make the (*io) callback a bit more flexible by also passing the
comedi_device pointer as a parameter.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Reviewed-by: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/8255.c | 33 ++++++++++++++------------
drivers/staging/comedi/drivers/8255.h | 6 +++--
drivers/staging/comedi/drivers/8255_pci.c | 3 ++-
drivers/staging/comedi/drivers/cb_pcidas64.c | 6 +++--
drivers/staging/comedi/drivers/daqboard2000.c | 3 ++-
drivers/staging/comedi/drivers/ni_labpc.c | 3 ++-
drivers/staging/comedi/drivers/ni_mio_common.c | 3 ++-
drivers/staging/comedi/drivers/pcl724.c | 3 ++-
8 files changed, 36 insertions(+), 24 deletions(-)
diff --git a/drivers/staging/comedi/drivers/8255.c
b/drivers/staging/comedi/drivers/8255.c
index a33a196..212e547 100644
--- a/drivers/staging/comedi/drivers/8255.c
+++ b/drivers/staging/comedi/drivers/8255.c
@@ -94,10 +94,11 @@ I/O port base address can be found in the output of 'lspci
-v'.
struct subdev_8255_private {
unsigned long iobase;
- int (*io)(int, int, int, unsigned long);
+ int (*io)(struct comedi_device *, int, int, int, unsigned long);
};
-static int subdev_8255_io(int dir, int port, int data, unsigned long iobase)
+static int subdev_8255_io(struct comedi_device *dev,
+ int dir, int port, int data, unsigned long iobase)
{
if (dir) {
outb(data, iobase + port);
@@ -113,8 +114,8 @@ void subdev_8255_interrupt(struct comedi_device *dev,
unsigned long iobase = spriv->iobase;
unsigned short d;
- d = spriv->io(0, _8255_DATA, 0, iobase);
- d |= (spriv->io(0, _8255_DATA + 1, 0, iobase) << 8);
+ d = spriv->io(dev, 0, _8255_DATA, 0, iobase);
+ d |= (spriv->io(dev, 0, _8255_DATA + 1, 0, iobase) << 8);
comedi_buf_put(s, d);
s->async->events |= COMEDI_CB_EOS;
@@ -136,18 +137,18 @@ static int subdev_8255_insn(struct comedi_device *dev,
mask = comedi_dio_update_state(s, data);
if (mask) {
if (mask & 0xff)
- spriv->io(1, _8255_DATA, s->state & 0xff, iobase);
+ spriv->io(dev, 1, _8255_DATA, s->state & 0xff, iobase);
if (mask & 0xff00)
- spriv->io(1, _8255_DATA + 1, (s->state >> 8) & 0xff,
- iobase);
+ spriv->io(dev, 1, _8255_DATA + 1,
+ (s->state >> 8) & 0xff, iobase);
if (mask & 0xff0000)
- spriv->io(1, _8255_DATA + 2, (s->state >> 16) & 0xff,
- iobase);
+ spriv->io(dev, 1, _8255_DATA + 2,
+ (s->state >> 16) & 0xff, iobase);
}
- v = spriv->io(0, _8255_DATA, 0, iobase);
- v |= (spriv->io(0, _8255_DATA + 1, 0, iobase) << 8);
- v |= (spriv->io(0, _8255_DATA + 2, 0, iobase) << 16);
+ v = spriv->io(dev, 0, _8255_DATA, 0, iobase);
+ v |= (spriv->io(dev, 0, _8255_DATA + 1, 0, iobase) << 8);
+ v |= (spriv->io(dev, 0, _8255_DATA + 2, 0, iobase) << 16);
data[1] = v;
@@ -172,7 +173,7 @@ static void subdev_8255_do_config(struct comedi_device *dev,
if (!(s->io_bits & 0xf00000))
config |= CR_C_HI_IO;
- spriv->io(1, _8255_CR, config, iobase);
+ spriv->io(dev, 1, _8255_CR, config, iobase);
}
static int subdev_8255_insn_config(struct comedi_device *dev,
@@ -261,7 +262,8 @@ static int subdev_8255_cancel(struct comedi_device *dev,
}
int subdev_8255_init(struct comedi_device *dev, struct comedi_subdevice *s,
- int (*io)(int, int, int, unsigned long),
+ int (*io)(struct comedi_device *,
+ int, int, int, unsigned long),
unsigned long iobase)
{
struct subdev_8255_private *spriv;
@@ -288,7 +290,8 @@ int subdev_8255_init(struct comedi_device *dev, struct
comedi_subdevice *s,
EXPORT_SYMBOL_GPL(subdev_8255_init);
int subdev_8255_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
- int (*io)(int, int, int, unsigned long),
+ int (*io)(struct comedi_device *,
+ int, int, int, unsigned long),
unsigned long iobase)
{
int ret;
diff --git a/drivers/staging/comedi/drivers/8255.h
b/drivers/staging/comedi/drivers/8255.h
index 795d232..c2c20db 100644
--- a/drivers/staging/comedi/drivers/8255.h
+++ b/drivers/staging/comedi/drivers/8255.h
@@ -22,10 +22,12 @@
#include "../comedidev.h"
int subdev_8255_init(struct comedi_device *dev, struct comedi_subdevice *s,
- int (*io)(int, int, int, unsigned long),
+ int (*io)(struct comedi_device *,
+ int, int, int, unsigned long),
unsigned long iobase);
int subdev_8255_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
- int (*io)(int, int, int, unsigned long),
+ int (*io)(struct comedi_device *,
+ int, int, int, unsigned long),
unsigned long iobase);
void subdev_8255_interrupt(struct comedi_device *dev,
struct comedi_subdevice *s);
diff --git a/drivers/staging/comedi/drivers/8255_pci.c
b/drivers/staging/comedi/drivers/8255_pci.c
index f21e656..cee3d18 100644
--- a/drivers/staging/comedi/drivers/8255_pci.c
+++ b/drivers/staging/comedi/drivers/8255_pci.c
@@ -190,7 +190,8 @@ static int pci_8255_mite_init(struct pci_dev *pcidev)
return 0;
}
-static int pci_8255_mmio(int dir, int port, int data, unsigned long iobase)
+static int pci_8255_mmio(struct comedi_device *dev,
+ int dir, int port, int data, unsigned long iobase)
{
void __iomem *mmio_base = (void __iomem *)iobase;
diff --git a/drivers/staging/comedi/drivers/cb_pcidas64.c
b/drivers/staging/comedi/drivers/cb_pcidas64.c
index fa12614..fafde70 100644
--- a/drivers/staging/comedi/drivers/cb_pcidas64.c
+++ b/drivers/staging/comedi/drivers/cb_pcidas64.c
@@ -3369,7 +3369,8 @@ static int ao_cancel(struct comedi_device *dev, struct
comedi_subdevice *s)
return 0;
}
-static int dio_callback(int dir, int port, int data, unsigned long arg)
+static int dio_callback(struct comedi_device *dev,
+ int dir, int port, int data, unsigned long arg)
{
void __iomem *iobase = (void __iomem *)arg;
@@ -3380,7 +3381,8 @@ static int dio_callback(int dir, int port, int data,
unsigned long arg)
return readb(iobase + port);
}
-static int dio_callback_4020(int dir, int port, int data, unsigned long arg)
+static int dio_callback_4020(struct comedi_device *dev,
+ int dir, int port, int data, unsigned long arg)
{
void __iomem *iobase = (void __iomem *)arg;
diff --git a/drivers/staging/comedi/drivers/daqboard2000.c
b/drivers/staging/comedi/drivers/daqboard2000.c
index cd369cd..d728fbd 100644
--- a/drivers/staging/comedi/drivers/daqboard2000.c
+++ b/drivers/staging/comedi/drivers/daqboard2000.c
@@ -651,7 +651,8 @@ static void daqboard2000_initializeDac(struct comedi_device
*dev)
daqboard2000_dacDisarm(dev);
}
-static int daqboard2000_8255_cb(int dir, int port, int data,
+static int daqboard2000_8255_cb(struct comedi_device *dev,
+ int dir, int port, int data,
unsigned long ioaddr)
{
void __iomem *mmio_base = (void __iomem *)ioaddr;
diff --git a/drivers/staging/comedi/drivers/ni_labpc.c
b/drivers/staging/comedi/drivers/ni_labpc.c
index 126d65c..fa108b9 100644
--- a/drivers/staging/comedi/drivers/ni_labpc.c
+++ b/drivers/staging/comedi/drivers/ni_labpc.c
@@ -1035,7 +1035,8 @@ static int labpc_ao_insn_read(struct comedi_device *dev,
return 1;
}
-static int labpc_8255_mmio(int dir, int port, int data, unsigned long arg)
+static int labpc_8255_mmio(struct comedi_device *cdev,
+ int dir, int port, int data, unsigned long arg)
{
struct comedi_device *dev = (struct comedi_device *)arg;
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c
b/drivers/staging/comedi/drivers/ni_mio_common.c
index 297c95d..0765905 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -4176,7 +4176,8 @@ static int ni_freq_out_insn_config(struct comedi_device
*dev,
return insn->n;
}
-static int ni_8255_callback(int dir, int port, int data, unsigned long arg)
+static int ni_8255_callback(struct comedi_device *cdev,
+ int dir, int port, int data, unsigned long arg)
{
struct comedi_device *dev = (struct comedi_device *)arg;
diff --git a/drivers/staging/comedi/drivers/pcl724.c
b/drivers/staging/comedi/drivers/pcl724.c
index c7f8eb1..946b058 100644
--- a/drivers/staging/comedi/drivers/pcl724.c
+++ b/drivers/staging/comedi/drivers/pcl724.c
@@ -81,7 +81,8 @@ static const struct pcl724_board boardtypes[] = {
},
};
-static int pcl724_8255mapped_io(int dir, int port, int data,
+static int pcl724_8255mapped_io(struct comedi_device *dev,
+ int dir, int port, int data,
unsigned long iobase)
{
int movport = SIZE_8255 * (iobase >> 12);
--
2.0.3
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