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-rw-r--r--drivers/staging/comedi/Kconfig1
-rw-r--r--drivers/staging/comedi/drivers/cb_pcidas.c86
2 files changed, 34 insertions, 53 deletions
diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
index 98a62e34b7b6..c15cce4859fe 100644
--- a/drivers/staging/comedi/Kconfig
+++ b/drivers/staging/comedi/Kconfig
@@ -918,6 +918,7 @@ config COMEDI_CB_PCIDAS64
config COMEDI_CB_PCIDAS
tristate "MeasurementComputing PCI-DAS support"
+ select COMEDI_8254
select COMEDI_8255
---help---
Enable support for ComputerBoards/MeasurementComputing PCI-DAS with
diff --git a/drivers/staging/comedi/drivers/cb_pcidas.c b/drivers/staging/comedi/drivers/cb_pcidas.c
index dd0c65a5b5a0..b6ef4b47c673 100644
--- a/drivers/staging/comedi/drivers/cb_pcidas.c
+++ b/drivers/staging/comedi/drivers/cb_pcidas.c
@@ -68,7 +68,7 @@ analog triggering on 1602 series
#include "../comedidev.h"
-#include "8253.h"
+#include "comedi_8254.h"
#include "8255.h"
#include "amcc_s5933.h"
#include "comedi_fc.h"
@@ -338,14 +338,12 @@ static const struct cb_pcidas_board cb_pcidas_boards[] = {
};
struct cb_pcidas_private {
+ struct comedi_8254 *ao_pacer;
/* base addresses */
unsigned long s5933_config;
unsigned long control_status;
unsigned long adc_fifo;
unsigned long ao_registers;
- /* divisors of master clock for analog input pacing */
- unsigned int divisor1;
- unsigned int divisor2;
/* bits to write to registers */
unsigned int adc_fifo_bits;
unsigned int s5933_intcsr_bits;
@@ -353,9 +351,6 @@ struct cb_pcidas_private {
/* fifo buffers */
unsigned short ai_buffer[AI_BUFFER_SIZE];
unsigned short ao_buffer[AO_BUFFER_SIZE];
- /* divisors of master clock for analog output pacing */
- unsigned int ao_divisor1;
- unsigned int ao_divisor2;
unsigned int calibration_source;
};
@@ -778,7 +773,6 @@ static int cb_pcidas_ai_cmdtest(struct comedi_device *dev,
struct comedi_cmd *cmd)
{
const struct cb_pcidas_board *thisboard = dev->board_ptr;
- struct cb_pcidas_private *devpriv = dev->private;
int err = 0;
unsigned int arg;
@@ -858,18 +852,12 @@ static int cb_pcidas_ai_cmdtest(struct comedi_device *dev,
if (cmd->scan_begin_src == TRIG_TIMER) {
arg = cmd->scan_begin_arg;
- i8253_cascade_ns_to_timer(I8254_OSC_BASE_10MHZ,
- &devpriv->divisor1,
- &devpriv->divisor2,
- &arg, cmd->flags);
+ comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags);
err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg);
}
if (cmd->convert_src == TRIG_TIMER) {
arg = cmd->convert_arg;
- i8253_cascade_ns_to_timer(I8254_OSC_BASE_10MHZ,
- &devpriv->divisor1,
- &devpriv->divisor2,
- &arg, cmd->flags);
+ comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags);
err |= cfc_check_trigger_arg_is(&cmd->convert_arg, arg);
}
@@ -886,18 +874,6 @@ static int cb_pcidas_ai_cmdtest(struct comedi_device *dev,
return 0;
}
-static void cb_pcidas_ai_load_counters(struct comedi_device *dev)
-{
- struct cb_pcidas_private *devpriv = dev->private;
- unsigned long timer_base = dev->iobase + ADC8254;
-
- i8254_set_mode(timer_base, 0, 1, I8254_MODE2 | I8254_BINARY);
- i8254_set_mode(timer_base, 0, 2, I8254_MODE2 | I8254_BINARY);
-
- i8254_write(timer_base, 0, 1, devpriv->divisor1);
- i8254_write(timer_base, 0, 2, devpriv->divisor2);
-}
-
static int cb_pcidas_ai_cmd(struct comedi_device *dev,
struct comedi_subdevice *s)
{
@@ -933,8 +909,11 @@ static int cb_pcidas_ai_cmd(struct comedi_device *dev,
outw(bits, devpriv->control_status + ADCMUX_CONT);
/* load counters */
- if (cmd->scan_begin_src == TRIG_TIMER || cmd->convert_src == TRIG_TIMER)
- cb_pcidas_ai_load_counters(dev);
+ if (cmd->scan_begin_src == TRIG_TIMER ||
+ cmd->convert_src == TRIG_TIMER) {
+ comedi_8254_update_divisors(dev->pacer);
+ comedi_8254_pacer_enable(dev->pacer, 1, 2, true);
+ }
/* enable interrupts */
spin_lock_irqsave(&dev->spinlock, flags);
@@ -1004,7 +983,6 @@ static int cb_pcidas_ao_cmdtest(struct comedi_device *dev,
const struct cb_pcidas_board *thisboard = dev->board_ptr;
struct cb_pcidas_private *devpriv = dev->private;
int err = 0;
- unsigned int arg;
/* Step 1 : check if triggers are trivially valid */
@@ -1049,11 +1027,10 @@ static int cb_pcidas_ao_cmdtest(struct comedi_device *dev,
/* step 4: fix up any arguments */
if (cmd->scan_begin_src == TRIG_TIMER) {
- arg = cmd->scan_begin_arg;
- i8253_cascade_ns_to_timer(I8254_OSC_BASE_10MHZ,
- &devpriv->ao_divisor1,
- &devpriv->ao_divisor2,
- &arg, cmd->flags);
+ unsigned int arg = cmd->scan_begin_arg;
+
+ comedi_8254_cascade_ns_to_timer(devpriv->ao_pacer,
+ &arg, cmd->flags);
err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg);
}
@@ -1139,18 +1116,6 @@ static int cb_pcidas_ao_inttrig(struct comedi_device *dev,
return 0;
}
-static void cb_pcidas_ao_load_counters(struct comedi_device *dev)
-{
- struct cb_pcidas_private *devpriv = dev->private;
- unsigned long timer_base = dev->iobase + DAC8254;
-
- i8254_set_mode(timer_base, 0, 1, I8254_MODE2 | I8254_BINARY);
- i8254_set_mode(timer_base, 0, 2, I8254_MODE2 | I8254_BINARY);
-
- i8254_write(timer_base, 0, 1, devpriv->ao_divisor1);
- i8254_write(timer_base, 0, 2, devpriv->ao_divisor2);
-}
-
static int cb_pcidas_ao_cmd(struct comedi_device *dev,
struct comedi_subdevice *s)
{
@@ -1180,8 +1145,10 @@ static int cb_pcidas_ao_cmd(struct comedi_device *dev,
outw(0, devpriv->ao_registers + DACFIFOCLR);
/* load counters */
- if (cmd->scan_begin_src == TRIG_TIMER)
- cb_pcidas_ao_load_counters(dev);
+ if (cmd->scan_begin_src == TRIG_TIMER) {
+ comedi_8254_update_divisors(devpriv->ao_pacer);
+ comedi_8254_pacer_enable(devpriv->ao_pacer, 1, 2, true);
+ }
/* set pacer source */
spin_lock_irqsave(&dev->spinlock, flags);
@@ -1408,6 +1375,17 @@ static int cb_pcidas_auto_attach(struct comedi_device *dev,
}
dev->irq = pcidev->irq;
+ dev->pacer = comedi_8254_init(dev->iobase + ADC8254,
+ I8254_OSC_BASE_10MHZ, I8254_IO8, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
+ devpriv->ao_pacer = comedi_8254_init(dev->iobase + DAC8254,
+ I8254_OSC_BASE_10MHZ,
+ I8254_IO8, 0);
+ if (!devpriv->ao_pacer)
+ return -ENOMEM;
+
ret = comedi_alloc_subdevices(dev, 7);
if (ret)
return ret;
@@ -1550,9 +1528,11 @@ static void cb_pcidas_detach(struct comedi_device *dev)
{
struct cb_pcidas_private *devpriv = dev->private;
- if (devpriv && devpriv->s5933_config) {
- outl(INTCSR_INBOX_INTR_STATUS,
- devpriv->s5933_config + AMCC_OP_REG_INTCSR);
+ if (devpriv) {
+ if (devpriv->s5933_config)
+ outl(INTCSR_INBOX_INTR_STATUS,
+ devpriv->s5933_config + AMCC_OP_REG_INTCSR);
+ kfree(devpriv->ao_pacer);
}
comedi_pci_detach(dev);
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-19 20:40:15 +0200