diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/pcl711.c')
-rw-r--r-- | drivers/staging/comedi/drivers/pcl711.c | 76 |
1 files changed, 28 insertions, 48 deletions
diff --git a/drivers/staging/comedi/drivers/pcl711.c b/drivers/staging/comedi/drivers/pcl711.c index cb7e4c37b8b9..cfc3a627d0ca 100644 --- a/drivers/staging/comedi/drivers/pcl711.c +++ b/drivers/staging/comedi/drivers/pcl711.c @@ -41,8 +41,7 @@ #include "../comedidev.h" -#include "comedi_fc.h" -#include "8253.h" +#include "comedi_8254.h" /* * I/O port register map @@ -153,11 +152,6 @@ static const struct pcl711_board boardtypes[] = { }, }; -struct pcl711_private { - unsigned int divisor1; - unsigned int divisor2; -}; - static void pcl711_ai_set_mode(struct comedi_device *dev, unsigned int mode) { /* @@ -287,26 +281,24 @@ static int pcl711_ai_insn_read(struct comedi_device *dev, static int pcl711_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { - struct pcl711_private *devpriv = dev->private; int err = 0; - unsigned int arg; /* Step 1 : check if triggers are trivially valid */ - err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW); - err |= cfc_check_trigger_src(&cmd->scan_begin_src, + err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW); + err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_TIMER | TRIG_EXT); - err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW); - err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); - err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); + err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW); + err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); + err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); if (err) return 1; /* Step 2a : make sure trigger sources are unique */ - err |= cfc_check_trigger_is_unique(cmd->scan_begin_src); - err |= cfc_check_trigger_is_unique(cmd->stop_src); + err |= comedi_check_trigger_is_unique(cmd->scan_begin_src); + err |= comedi_check_trigger_is_unique(cmd->stop_src); /* Step 2b : and mutually compatible */ @@ -315,23 +307,24 @@ static int pcl711_ai_cmdtest(struct comedi_device *dev, /* Step 3: check if arguments are trivially valid */ - err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); + err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0); if (cmd->scan_begin_src == TRIG_EXT) { - err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0); + err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0); } else { #define MAX_SPEED 1000 - err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg, - MAX_SPEED); + err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg, + MAX_SPEED); } - err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); - err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); + err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0); + err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg, + cmd->chanlist_len); if (cmd->stop_src == TRIG_COUNT) - err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1); + err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1); else /* TRIG_NONE */ - err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); + err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0); if (err) return 3; @@ -339,12 +332,10 @@ static int pcl711_ai_cmdtest(struct comedi_device *dev, /* step 4 */ if (cmd->scan_begin_src == TRIG_TIMER) { - arg = cmd->scan_begin_arg; - i8253_cascade_ns_to_timer(I8254_OSC_BASE_2MHZ, - &devpriv->divisor1, - &devpriv->divisor2, - &arg, cmd->flags); - err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg); + unsigned int arg = cmd->scan_begin_arg; + + comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags); + err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, arg); } if (err) @@ -353,18 +344,6 @@ static int pcl711_ai_cmdtest(struct comedi_device *dev, return 0; } -static void pcl711_ai_load_counters(struct comedi_device *dev) -{ - struct pcl711_private *devpriv = dev->private; - unsigned long timer_base = dev->iobase + PCL711_TIMER_BASE; - - 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 pcl711_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { struct comedi_cmd *cmd = &s->async->cmd; @@ -372,7 +351,8 @@ static int pcl711_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) pcl711_set_changain(dev, s, cmd->chanlist[0]); if (cmd->scan_begin_src == TRIG_TIMER) { - pcl711_ai_load_counters(dev); + comedi_8254_update_divisors(dev->pacer); + comedi_8254_pacer_enable(dev->pacer, 1, 2, true); outb(PCL711_INT_STAT_CLR, dev->iobase + PCL711_INT_STAT_REG); pcl711_ai_set_mode(dev, PCL711_MODE_PACER_IRQ); } else { @@ -445,14 +425,9 @@ static int pcl711_do_insn_bits(struct comedi_device *dev, static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it) { const struct pcl711_board *board = dev->board_ptr; - struct pcl711_private *devpriv; struct comedi_subdevice *s; int ret; - devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); - if (!devpriv) - return -ENOMEM; - ret = comedi_request_region(dev, it->options[0], 0x10); if (ret) return ret; @@ -464,6 +439,11 @@ static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it) dev->irq = it->options[1]; } + dev->pacer = comedi_8254_init(dev->iobase + PCL711_TIMER_BASE, + I8254_OSC_BASE_2MHZ, I8254_IO8, 0); + if (!dev->pacer) + return -ENOMEM; + ret = comedi_alloc_subdevices(dev, 4); if (ret) return ret; |