redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

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

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

Only the ni_labpc_pci module does the ioremap, its also the only
module that sets the 'has_mmio' member in the boardinfo. Remove
this member from the boardinfo and use dev->mmio to determine if
the I/O is memory mapped.

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>
This commit is contained in:
H Hartley Sweeten 2014-07-29 15:01:43 -07:00 committed by Greg Kroah-Hartman
parent adcd16a298
commit 70f7286714
3 changed files with 16 additions and 34 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
drivers/staging/comedi/drivers/ni_labpc.c
View file

@ -141,17 +141,13 @@ static void labpc_outb(struct comedi_device *dev,
static unsigned int labpc_readb(struct comedi_device *dev, unsigned long reg)
{
void __iomem *mmio = (void __iomem *)dev->iobase;
return readb(mmio + reg);
return readb(dev->mmio + reg);
}
static void labpc_writeb(struct comedi_device *dev,
unsigned int byte, unsigned long reg)
{
void __iomem *mmio = (void __iomem *)dev->iobase;
writeb(byte, mmio + reg);
writeb(byte, dev->mmio + reg);
}
#if IS_ENABLED(CONFIG_COMEDI_NI_LABPC_ISA)
@ -181,13 +177,9 @@ static void labpc_counter_load(struct comedi_device *dev,
unsigned int count,
unsigned int mode)
{
const struct labpc_boardinfo *board = comedi_board(dev);
if (board->has_mmio) {
void __iomem *mmio = (void __iomem *)dev->iobase;
i8254_mm_set_mode(mmio + reg, 0, counter_number, mode);
i8254_mm_write(mmio + reg, 0, counter_number, count);
if (dev->mmio) {
i8254_mm_set_mode(dev->mmio + reg, 0, counter_number, mode);
i8254_mm_write(dev->mmio + reg, 0, counter_number, count);
} else {
i8254_set_mode(dev->iobase + reg, 0, counter_number, mode);
i8254_write(dev->iobase + reg, 0, counter_number, count);
@ -199,15 +191,10 @@ static void labpc_counter_set_mode(struct comedi_device *dev,
unsigned int counter_number,
unsigned int mode)
{
const struct labpc_boardinfo *board = comedi_board(dev);
if (board->has_mmio) {
void __iomem *mmio = (void __iomem *)dev->iobase;
i8254_mm_set_mode(mmio + reg, 0, counter_number, mode);
} else {
if (dev->mmio)
i8254_mm_set_mode(dev->mmio + reg, 0, counter_number, mode);
else
i8254_set_mode(dev->iobase + reg, 0, counter_number, mode);
}
}
static int labpc_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
@ -1051,14 +1038,13 @@ static int labpc_ao_insn_read(struct comedi_device *dev,
static int labpc_8255_mmio(int dir, int port, int data, unsigned long arg)
{
struct comedi_device *dev = (struct comedi_device *)arg;
void __iomem *mmio = (void __iomem *)dev->iobase + DIO_BASE_REG;
if (dir) {
writeb(data, mmio + port);
writeb(data, dev->mmio + DIO_BASE_REG + port);
return 0;
}
return readb(mmio + port);
return readb(dev->mmio + DIO_BASE_REG + port);
}
/* lowlevel write to eeprom/dac */
@ -1342,7 +1328,7 @@ int labpc_common_attach(struct comedi_device *dev,
int ret;
int i;
if (board->has_mmio) {
if (dev->mmio) {
devpriv->read_byte = labpc_readb;
devpriv->write_byte = labpc_writeb;
} else {
@ -1416,7 +1402,7 @@ int labpc_common_attach(struct comedi_device *dev,
/* 8255 dio */
s = &dev->subdevices[2];
if (board->has_mmio) {
if (dev->mmio) {
ret = subdev_8255_init(dev, s, labpc_8255_mmio,
(unsigned long)dev);
} else {

1
drivers/staging/comedi/drivers/ni_labpc.h
View file

@ -32,7 +32,6 @@ struct labpc_boardinfo {
unsigned ai_scan_up:1; /* can auto scan up in ai channels */
unsigned has_ao:1; /* has analog outputs */
unsigned is_labpc1200:1; /* has extra regs compared to pc+ */
unsigned has_mmio:1; /* uses memory mapped io */
};
struct labpc_private {

11
drivers/staging/comedi/drivers/ni_labpc_pci.c
View file

@ -48,7 +48,6 @@ static const struct labpc_boardinfo labpc_pci_boards[] = {
.ai_scan_up = 1,
.has_ao = 1,
.is_labpc1200 = 1,
.has_mmio = 1,
},
};
@ -81,7 +80,6 @@ static int labpc_pci_auto_attach(struct comedi_device *dev,
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
const struct labpc_boardinfo *board = NULL;
struct labpc_private *devpriv;
void __iomem *mmio;
int ret;
if (context < ARRAY_SIZE(labpc_pci_boards))
@ -99,10 +97,9 @@ static int labpc_pci_auto_attach(struct comedi_device *dev,
if (ret)
return ret;
mmio = pci_ioremap_bar(pcidev, 1);
if (!mmio)
dev->mmio = pci_ioremap_bar(pcidev, 1);
if (!dev->mmio)
return -ENOMEM;
dev->iobase = (unsigned long)mmio;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
@ -113,8 +110,8 @@ static int labpc_pci_auto_attach(struct comedi_device *dev,
static void labpc_pci_detach(struct comedi_device *dev)
{
if (dev->iobase)
iounmap((void __iomem *)dev->iobase);
if (dev->mmio)
iounmap(dev->mmio);
if (dev->irq)
free_irq(dev->irq, dev);
comedi_pci_disable(dev);