Some of the hardware supported by this driver includes an 8254 timer. For
aesthetics, convert it to use the comedi_8254 module to provide support for
the 8254 timer.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/Kconfig | 1 +
drivers/staging/comedi/drivers/adv_pci_dio.c | 87 ++++------------------------
2 files changed, 11 insertions(+), 77 deletions(-)
diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
index f088685..e4ef12b 100644
--- a/drivers/staging/comedi/Kconfig
+++ b/drivers/staging/comedi/Kconfig
@@ -771,6 +771,7 @@ config COMEDI_ADV_PCI1724
config COMEDI_ADV_PCI_DIO
tristate "Advantech PCI DIO card support"
+ select COMEDI_8254
select COMEDI_8255
---help---
Enable support for Advantech PCI DIO cards
diff --git a/drivers/staging/comedi/drivers/adv_pci_dio.c b/drivers/staging/comedi/drivers/adv_pci_dio.c
index fb9de3a..a46cffe 100644
--- a/drivers/staging/comedi/drivers/adv_pci_dio.c
+++ b/drivers/staging/comedi/drivers/adv_pci_dio.c
@@ -36,7 +36,7 @@ Configuration options:
#include "../comedidev.h"
#include "8255.h"
-#include "8253.h"
+#include "comedi_8254.h"
/* hardware types of the cards */
enum hw_cards_id {
@@ -481,71 +481,6 @@ static int pci_dio_insn_bits_do_w(struct comedi_device *dev,
/*
==============================================================================
*/
-static int pci_8254_insn_read(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- unsigned long timer_regbase = (unsigned long)s->private;
- unsigned int chan = CR_CHAN(insn->chanspec);
- unsigned long flags;
-
- spin_lock_irqsave(&s->spin_lock, flags);
- data[0] = i8254_read(dev->iobase + timer_regbase, 0, chan);
- spin_unlock_irqrestore(&s->spin_lock, flags);
- return 1;
-}
-
-/*
-==============================================================================
-*/
-static int pci_8254_insn_write(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- unsigned long timer_regbase = (unsigned long)s->private;
- unsigned int chan = CR_CHAN(insn->chanspec);
- unsigned long flags;
-
- spin_lock_irqsave(&s->spin_lock, flags);
- i8254_write(dev->iobase + timer_regbase, 0, chan, data[0]);
- spin_unlock_irqrestore(&s->spin_lock, flags);
- return 1;
-}
-
-/*
-==============================================================================
-*/
-static int pci_8254_insn_config(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- unsigned long timer_regbase = (unsigned long)s->private;
- unsigned long iobase = dev->iobase + timer_regbase;
- unsigned int chan = CR_CHAN(insn->chanspec);
- int ret = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&s->spin_lock, flags);
- switch (data[0]) {
- case INSN_CONFIG_SET_COUNTER_MODE:
- ret = i8254_set_mode(iobase, 0, chan, data[1]);
- if (ret < 0)
- ret = -EINVAL;
- break;
- case INSN_CONFIG_8254_READ_STATUS:
- data[1] = i8254_status(iobase, 0, chan);
- break;
- default:
- ret = -EINVAL;
- break;
- }
- spin_unlock_irqrestore(&s->spin_lock, flags);
- return ret < 0 ? ret : insn->n;
-}
-
-/*
-==============================================================================
-*/
static int pci1760_unchecked_mbxrequest(struct comedi_device *dev,
unsigned char *omb, unsigned char *imb,
int repeats)
@@ -827,9 +762,6 @@ static int pci_dio_reset(struct comedi_device *dev)
outb(0, dev->iobase + PCI1735_DO + 1);
outb(0, dev->iobase + PCI1735_DO + 2);
outb(0, dev->iobase + PCI1735_DO + 3);
- i8254_set_mode(dev->iobase + PCI1735_C8254, 0, 0, I8254_MODE0);
- i8254_set_mode(dev->iobase + PCI1735_C8254, 0, 1, I8254_MODE0);
- i8254_set_mode(dev->iobase + PCI1735_C8254, 0, 2, I8254_MODE0);
break;
case TYPE_PCI1736:
@@ -1108,14 +1040,15 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
if (this_board->timer_regbase) {
s = &dev->subdevices[subdev];
- s->type = COMEDI_SUBD_COUNTER;
- s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
- s->n_chan = 3;
- s->maxdata = 65535;
- s->insn_read = pci_8254_insn_read;
- s->insn_write = pci_8254_insn_write;
- s->insn_config = pci_8254_insn_config;
- s->private = (void *)this_board->timer_regbase;
+
+ dev->pacer = comedi_8254_init(dev->iobase +
+ this_board->timer_regbase,
+ 0, I8254_IO8, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
+ comedi_8254_subdevice_init(s, dev->pacer);
+
subdev++;
}
--
2.3.0
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