diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2016-06-08 18:26:40 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-18 04:02:56 (GMT) |
| commit | a23b85a5ab9f19936ac673104f0e5b57a7ab13a1 (patch) | |
| tree | 2aa0386dfa0efd4968ed15d935b90ff4fac94b8d /drivers/staging/comedi | |
| parent | ff9842b651c501a2f13295035c5eb48d4b8e49b3 (diff) | |
| download | linux-a23b85a5ab9f19936ac673104f0e5b57a7ab13a1.tar.xz | |
staging: comedi: addi_apci_1564: use comedi_handle_event() for counters
The counter subdevice can generate an interrupt. Currently send_sig() is used
to let the task know when the interrupt occurs. Use the dev->read_subdev and
comedi_handle_events() instead.
Remove the, now unused, 'tsk_current' member from the private data and the
unnecessary include of <linux/sched.h>.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c | 4 | ||||
| -rw-r--r-- | drivers/staging/comedi/drivers/addi_apci_1564.c | 16 |
2 files changed, 6 insertions, 14 deletions
diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c index f0c0d58..d6b2880 100644 --- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c +++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c @@ -6,8 +6,6 @@ static int apci1564_timer_insn_config(struct comedi_device *dev, struct apci1564_private *devpriv = dev->private; unsigned int ctrl; - devpriv->tsk_current = current; - /* Stop the timer */ ctrl = inl(devpriv->timer + ADDI_TCW_CTRL_REG); ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG | @@ -101,8 +99,6 @@ static int apci1564_counter_insn_config(struct comedi_device *dev, unsigned long iobase = devpriv->counters + APCI1564_COUNTER(chan); unsigned int ctrl; - devpriv->tsk_current = current; - /* Stop The Timer */ ctrl = inl(iobase + ADDI_TCW_CTRL_REG); ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG | diff --git a/drivers/staging/comedi/drivers/addi_apci_1564.c b/drivers/staging/comedi/drivers/addi_apci_1564.c index 45c1558..4af45d8 100644 --- a/drivers/staging/comedi/drivers/addi_apci_1564.c +++ b/drivers/staging/comedi/drivers/addi_apci_1564.c @@ -23,7 +23,6 @@ #include <linux/module.h> #include <linux/interrupt.h> -#include <linux/sched.h> #include "../comedi_pci.h" #include "addi_tcw.h" @@ -118,6 +117,7 @@ */ #define APCI1564_EVENT_COS BIT(31) #define APCI1564_EVENT_TIMER BIT(30) +#define APCI1564_EVENT_COUNTER(x) BIT(27 + (x)) /* counter 0-2 */ #define APCI1564_EVENT_MASK 0xfff0000f /* all but [19:4] */ struct apci1564_private { @@ -127,7 +127,6 @@ struct apci1564_private { unsigned int mode1; /* rising-edge/high level channels */ unsigned int mode2; /* falling-edge/low level channels */ unsigned int ctrl; /* interrupt mode OR (edge) . AND (level) */ - struct task_struct *tsk_current; }; #include "addi-data/hwdrv_apci1564.c" @@ -200,21 +199,18 @@ static irqreturn_t apci1564_interrupt(int irq, void *d) } if (devpriv->counters) { - for (chan = 0; chan < 4; chan++) { + for (chan = 0; chan < 3; chan++) { unsigned long iobase; iobase = devpriv->counters + APCI1564_COUNTER(chan); status = inl(iobase + ADDI_TCW_IRQ_REG); - if (status & 0x01) { - /* Disable Counter Interrupt */ + if (status & ADDI_TCW_IRQ) { + s->state |= APCI1564_EVENT_COUNTER(chan); + + /* clear the interrupt */ ctrl = inl(iobase + ADDI_TCW_CTRL_REG); outl(0x0, iobase + ADDI_TCW_CTRL_REG); - - /* Send a signal to from kernel to user space */ - send_sig(SIGIO, devpriv->tsk_current, 0); - - /* Enable Counter Interrupt */ outl(ctrl, iobase + ADDI_TCW_CTRL_REG); } } |