Some of the hardware supported by this driver include an 8254 timer that is
exposed to the user as a comedi_subdevice. 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/das08.c | 77 +++++-----------------------------
2 files changed, 11 insertions(+), 67 deletions(-)
diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
index f63626f..8d636ec 100644
--- a/drivers/staging/comedi/Kconfig
+++ b/drivers/staging/comedi/Kconfig
@@ -1275,6 +1275,7 @@ config COMEDI_AMPLC_PC236
config COMEDI_DAS08
tristate
+ select COMEDI_8254
select COMEDI_8255
config COMEDI_ISADMA
diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c
index c78c0df..ecd3639 100644
--- a/drivers/staging/comedi/drivers/das08.c
+++ b/drivers/staging/comedi/drivers/das08.c
@@ -23,7 +23,7 @@
#include "../comedidev.h"
#include "8255.h"
-#include "8253.h"
+#include "comedi_8254.h"
#include "das08.h"
/*
@@ -359,62 +359,6 @@ static int das08_ao_insn_write(struct comedi_device *dev,
return insn->n;
}
-static void i8254_initialize(struct comedi_device *dev)
-{
- const struct das08_board_struct *thisboard = dev->board_ptr;
- unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
- unsigned int mode = I8254_MODE0 | I8254_BINARY;
- int i;
-
- for (i = 0; i < 3; ++i)
- i8254_set_mode(i8254_iobase, 0, i, mode);
-}
-
-static int das08_counter_read(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- const struct das08_board_struct *thisboard = dev->board_ptr;
- unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
- int chan = insn->chanspec;
-
- data[0] = i8254_read(i8254_iobase, 0, chan);
- return 1;
-}
-
-static int das08_counter_write(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- const struct das08_board_struct *thisboard = dev->board_ptr;
- unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
- int chan = insn->chanspec;
-
- i8254_write(i8254_iobase, 0, chan, data[0]);
- return 1;
-}
-
-static int das08_counter_config(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
-{
- const struct das08_board_struct *thisboard = dev->board_ptr;
- unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
- int chan = insn->chanspec;
-
- switch (data[0]) {
- case INSN_CONFIG_SET_COUNTER_MODE:
- i8254_set_mode(i8254_iobase, 0, chan, data[1]);
- break;
- case INSN_CONFIG_8254_READ_STATUS:
- data[1] = i8254_status(i8254_iobase, 0, chan);
- break;
- default:
- return -EINVAL;
- }
- return 2;
-}
-
int das08_common_attach(struct comedi_device *dev, unsigned long iobase)
{
const struct das08_board_struct *thisboard = dev->board_ptr;
@@ -511,17 +455,16 @@ int das08_common_attach(struct comedi_device *dev, unsigned long iobase)
s->type = COMEDI_SUBD_UNUSED;
}
+ /* Counter subdevice (8254) */
s = &dev->subdevices[5];
- /* 8254 */
- if (thisboard->i8254_offset != 0) {
- s->type = COMEDI_SUBD_COUNTER;
- s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
- s->n_chan = 3;
- s->maxdata = 0xFFFF;
- s->insn_read = das08_counter_read;
- s->insn_write = das08_counter_write;
- s->insn_config = das08_counter_config;
- i8254_initialize(dev);
+ if (thisboard->i8254_offset) {
+ dev->pacer = comedi_8254_init(dev->iobase +
+ thisboard->i8254_offset,
+ 0, I8254_IO8, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
+ comedi_8254_subdevice_init(s, dev->pacer);
} else {
s->type = COMEDI_SUBD_UNUSED;
}
--
2.3.0
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