The hardware supported by this driver includes an 8254 timer. This timer is
not currently used, other than setting counters 1 and 2 to MODE4 to ensure
that the outputs are high.
For aesthetics, convert it to use the comedi_8254 module to provide support
for the 8254 timer. This will make it easier to add features later.
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/ni_at_ao.c | 14 +++++++++-----
2 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
index 8d636ec..20a906d 100644
--- a/drivers/staging/comedi/Kconfig
+++ b/drivers/staging/comedi/Kconfig
@@ -477,6 +477,7 @@ config COMEDI_NI_AT_A2150
config COMEDI_NI_AT_AO
tristate "NI AT-AO-6/10 EISA card support"
+ select COMEDI_8254
---help---
Enable support for National Instruments AT-AO-6/10 cards
diff --git a/drivers/staging/comedi/drivers/ni_at_ao.c b/drivers/staging/comedi/drivers/ni_at_ao.c
index 9eeaf3c..f27aa0e 100644
--- a/drivers/staging/comedi/drivers/ni_at_ao.c
+++ b/drivers/staging/comedi/drivers/ni_at_ao.c
@@ -37,7 +37,7 @@
#include "../comedidev.h"
-#include "8253.h"
+#include "comedi_8254.h"
/*
* Register map
@@ -274,7 +274,6 @@ static int atao_calib_insn_write(struct comedi_device *dev,
static void atao_reset(struct comedi_device *dev)
{
struct atao_private *devpriv = dev->private;
- unsigned long timer_base = dev->iobase + ATAO_82C53_BASE;
/* This is the reset sequence described in the manual */
@@ -282,9 +281,9 @@ static void atao_reset(struct comedi_device *dev)
outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
/* Put outputs of counter 1 and counter 2 in a high state */
- i8254_set_mode(timer_base, 0, 0, I8254_MODE4 | I8254_BINARY);
- i8254_set_mode(timer_base, 0, 1, I8254_MODE4 | I8254_BINARY);
- i8254_write(timer_base, 0, 0, 0x0003);
+ comedi_8254_set_mode(dev->pacer, 0, I8254_MODE4 | I8254_BINARY);
+ comedi_8254_set_mode(dev->pacer, 1, I8254_MODE4 | I8254_BINARY);
+ comedi_8254_write(dev->pacer, 0, 0x0003);
outw(ATAO_CFG2_CALLD_NOP, dev->iobase + ATAO_CFG2_REG);
@@ -315,6 +314,11 @@ static int atao_attach(struct comedi_device *dev, struct comedi_devconfig *it)
if (!devpriv)
return -ENOMEM;
+ dev->pacer = comedi_8254_init(dev->iobase + ATAO_82C53_BASE,
+ 0, I8254_IO8, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
ret = comedi_alloc_subdevices(dev, 4);
if (ret)
return ret;
--
2.3.0
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