diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/ni_at_a2150.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_at_a2150.c | 64 |
1 files changed, 30 insertions, 34 deletions
diff --git a/drivers/staging/comedi/drivers/ni_at_a2150.c b/drivers/staging/comedi/drivers/ni_at_a2150.c index 83950807b672..06de25bb2f56 100644 --- a/drivers/staging/comedi/drivers/ni_at_a2150.c +++ b/drivers/staging/comedi/drivers/ni_at_a2150.c @@ -169,8 +169,6 @@ struct a2150_private { int config_bits; /* config register bits */ }; -#define devpriv ((struct a2150_private *)dev->private) - static int a2150_cancel(struct comedi_device *dev, struct comedi_subdevice *s); static int a2150_get_timing(struct comedi_device *dev, unsigned int *period, @@ -182,6 +180,8 @@ static int a2150_set_chanlist(struct comedi_device *dev, static void ni_dump_regs(struct comedi_device *dev) { + struct a2150_private *devpriv = dev->private; + printk("config bits 0x%x\n", devpriv->config_bits); printk("irq dma bits 0x%x\n", devpriv->irq_dma_bits); printk("status bits 0x%x\n", inw(dev->iobase + STATUS_REG)); @@ -196,6 +196,7 @@ static irqreturn_t a2150_interrupt(int irq, void *d) int status; unsigned long flags; struct comedi_device *dev = d; + struct a2150_private *devpriv = dev->private; struct comedi_subdevice *s = dev->read_subdev; struct comedi_async *async; struct comedi_cmd *cmd; @@ -300,6 +301,8 @@ static irqreturn_t a2150_interrupt(int irq, void *d) static int a2150_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { + struct a2150_private *devpriv = dev->private; + /* disable dma on card */ devpriv->irq_dma_bits &= ~DMA_INTR_EN_BIT & ~DMA_EN_BIT; outw(devpriv->irq_dma_bits, dev->iobase + IRQ_DMA_CNTRL_REG); @@ -342,37 +345,21 @@ static int a2150_ai_cmdtest(struct comedi_device *dev, if (err) return 2; - /* step 3: make sure arguments are trivially compatible */ + /* Step 3: check if arguments are trivially valid */ - if (cmd->start_arg != 0) { - cmd->start_arg = 0; - err++; - } - if (cmd->convert_src == TRIG_TIMER) { - if (cmd->convert_arg < thisboard->ai_speed) { - cmd->convert_arg = thisboard->ai_speed; - err++; - } - } - if (!cmd->chanlist_len) { - cmd->chanlist_len = 1; - err++; - } - if (cmd->scan_end_arg != cmd->chanlist_len) { - cmd->scan_end_arg = cmd->chanlist_len; - err++; - } - if (cmd->stop_src == TRIG_COUNT) { - if (!cmd->stop_arg) { - cmd->stop_arg = 1; - err++; - } - } else { /* TRIG_NONE */ - if (cmd->stop_arg != 0) { - cmd->stop_arg = 0; - err++; - } - } + err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); + + if (cmd->convert_src == TRIG_TIMER) + err |= cfc_check_trigger_arg_min(&cmd->convert_arg, + thisboard->ai_speed); + + err |= cfc_check_trigger_arg_min(&cmd->chanlist_len, 1); + err |= cfc_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); + else /* TRIG_NONE */ + err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); if (err) return 3; @@ -425,6 +412,7 @@ static int a2150_ai_cmdtest(struct comedi_device *dev, static int a2150_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { + struct a2150_private *devpriv = dev->private; struct comedi_async *async = s->async; struct comedi_cmd *cmd = &async->cmd; unsigned long lock_flags; @@ -536,6 +524,7 @@ static int a2150_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) static int a2150_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { + struct a2150_private *devpriv = dev->private; unsigned int i, n; static const int timeout = 100000; static const int filter_delay = 36; @@ -615,6 +604,7 @@ static int a2150_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, static int a2150_get_timing(struct comedi_device *dev, unsigned int *period, int flags) { + struct a2150_private *devpriv = dev->private; int lub, glb, temp; int lub_divisor_shift, lub_index, glb_divisor_shift, glb_index; int i, j; @@ -689,6 +679,8 @@ static int a2150_set_chanlist(struct comedi_device *dev, unsigned int start_channel, unsigned int num_channels) { + struct a2150_private *devpriv = dev->private; + if (start_channel + num_channels > 4) return -1; @@ -727,6 +719,7 @@ static int a2150_probe(struct comedi_device *dev) static int a2150_attach(struct comedi_device *dev, struct comedi_devconfig *it) { + struct a2150_private *devpriv; struct comedi_subdevice *s; unsigned long iobase = it->options[0]; unsigned int irq = it->options[1]; @@ -749,9 +742,10 @@ static int a2150_attach(struct comedi_device *dev, struct comedi_devconfig *it) } printk("\n"); - /* allocate and initialize dev->private */ - if (alloc_private(dev, sizeof(struct a2150_private)) < 0) + devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); + if (!devpriv) return -ENOMEM; + dev->private = devpriv; if (iobase == 0) { printk(" io base address required\n"); @@ -855,6 +849,8 @@ static int a2150_attach(struct comedi_device *dev, struct comedi_devconfig *it) static void a2150_detach(struct comedi_device *dev) { + struct a2150_private *devpriv = dev->private; + if (dev->iobase) { outw(APD_BIT | DPD_BIT, dev->iobase + CONFIG_REG); release_region(dev->iobase, A2150_SIZE); |