diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/pcl812.c')
-rw-r--r-- | drivers/staging/comedi/drivers/pcl812.c | 96 |
1 files changed, 40 insertions, 56 deletions
diff --git a/drivers/staging/comedi/drivers/pcl812.c b/drivers/staging/comedi/drivers/pcl812.c index 3ffb1ea..03a3fd6 100644 --- a/drivers/staging/comedi/drivers/pcl812.c +++ b/drivers/staging/comedi/drivers/pcl812.c @@ -117,8 +117,7 @@ #include "../comedidev.h" #include "comedi_isadma.h" -#include "comedi_fc.h" -#include "8253.h" +#include "comedi_8254.h" /* hardware types of the cards */ #define boardPCL812PG 0 /* and ACL-8112PG */ @@ -513,8 +512,6 @@ struct pcl812_private { unsigned char mode_reg_int; /* there is stored INT number for some card */ unsigned int ai_poll_ptr; /* how many sampes transfer poll */ unsigned int max_812_ai_mode0_rangewait; /* setling time for gain */ - unsigned int divisor1; - unsigned int divisor2; unsigned int use_diff:1; unsigned int use_mpc508:1; unsigned int use_ext_trg:1; @@ -522,21 +519,6 @@ struct pcl812_private { unsigned int ai_eos:1; }; -static void pcl812_start_pacer(struct comedi_device *dev, bool load_timers) -{ - struct pcl812_private *devpriv = dev->private; - unsigned long timer_base = dev->iobase + PCL812_TIMER_BASE; - - i8254_set_mode(timer_base, 0, 2, I8254_MODE2 | I8254_BINARY); - i8254_set_mode(timer_base, 0, 1, I8254_MODE2 | I8254_BINARY); - udelay(1); - - if (load_timers) { - i8254_write(timer_base, 0, 2, devpriv->divisor2); - i8254_write(timer_base, 0, 1, devpriv->divisor1); - } -} - static void pcl812_ai_setup_dma(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int unread_samples) @@ -650,28 +632,27 @@ static int pcl812_ai_cmdtest(struct comedi_device *dev, struct pcl812_private *devpriv = dev->private; int err = 0; unsigned int flags; - 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, TRIG_FOLLOW); + err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW); + err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW); if (devpriv->use_ext_trg) flags = TRIG_EXT; else flags = TRIG_TIMER; - err |= cfc_check_trigger_src(&cmd->convert_src, flags); + err |= comedi_check_trigger_src(&cmd->convert_src, flags); - 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->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->stop_src); + err |= comedi_check_trigger_is_unique(cmd->stop_src); /* Step 2b : and mutually compatible */ @@ -680,22 +661,24 @@ static int pcl812_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 |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0); + err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0); + err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0); - if (cmd->convert_src == TRIG_TIMER) - err |= cfc_check_trigger_arg_min(&cmd->convert_arg, - board->ai_ns_min); - else /* TRIG_EXT */ - err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); + if (cmd->convert_src == TRIG_TIMER) { + err |= comedi_check_trigger_arg_min(&cmd->convert_arg, + board->ai_ns_min); + } else { /* TRIG_EXT */ + err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0); + } - err |= cfc_check_trigger_arg_min(&cmd->chanlist_len, 1); - err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); + err |= comedi_check_trigger_arg_min(&cmd->chanlist_len, 1); + 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; @@ -703,12 +686,10 @@ static int pcl812_ai_cmdtest(struct comedi_device *dev, /* step 4: fix up any arguments */ if (cmd->convert_src == TRIG_TIMER) { - arg = cmd->convert_arg; - i8253_cascade_ns_to_timer(I8254_OSC_BASE_2MHZ, - &devpriv->divisor1, - &devpriv->divisor2, - &arg, cmd->flags); - err |= cfc_check_trigger_arg_is(&cmd->convert_arg, arg); + unsigned int arg = cmd->convert_arg; + + comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags); + err |= comedi_check_trigger_arg_is(&cmd->convert_arg, arg); } if (err) @@ -725,8 +706,6 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) unsigned int ctrl = 0; unsigned int i; - pcl812_start_pacer(dev, false); - pcl812_ai_set_chan_range(dev, cmd->chanlist[0], 1); if (dma) { /* check if we can use DMA transfer */ @@ -760,7 +739,8 @@ static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) switch (cmd->convert_src) { case TRIG_TIMER: - pcl812_start_pacer(dev, true); + comedi_8254_update_divisors(dev->pacer); + comedi_8254_pacer_enable(dev->pacer, 1, 2, true); break; } @@ -918,7 +898,7 @@ static int pcl812_ai_cancel(struct comedi_device *dev, outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG, dev->iobase + PCL812_CTRL_REG); - pcl812_start_pacer(dev, false); + comedi_8254_pacer_enable(dev->pacer, 1, 2, false); pcl812_ai_clear_eoc(dev); return 0; } @@ -1010,10 +990,6 @@ static void pcl812_reset(struct comedi_device *dev) dev->iobase + PCL812_CTRL_REG); pcl812_ai_clear_eoc(dev); - /* stop pacer */ - if (board->IRQbits) - pcl812_start_pacer(dev, false); - /* * Invalidate last_ai_chanspec then set analog input to * known channel/range. @@ -1162,11 +1138,19 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it) if (ret) return ret; - if ((1 << it->options[1]) & board->IRQbits) { - ret = request_irq(it->options[1], pcl812_interrupt, 0, - dev->board_name, dev); - if (ret == 0) - dev->irq = it->options[1]; + if (board->IRQbits) { + dev->pacer = comedi_8254_init(dev->iobase + PCL812_TIMER_BASE, + I8254_OSC_BASE_2MHZ, + I8254_IO8, 0); + if (!dev->pacer) + return -ENOMEM; + + if ((1 << it->options[1]) & board->IRQbits) { + ret = request_irq(it->options[1], pcl812_interrupt, 0, + dev->board_name, dev); + if (ret == 0) + dev->irq = it->options[1]; + } } /* we need an IRQ to do DMA on channel 3 or 1 */ |