static ssize_t iio_bfin_tmr_frequency_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_trigger *trig = to_iio_trigger(dev);
struct bfin_tmr_state *st = trig->private_data;
unsigned int period = get_gptimer_period(st->t->id);
unsigned long val;
if (period == 0)
val = 0;
else
val = get_sclk() / get_gptimer_period(st->t->id);
return sprintf(buf, "%lu\n", val);
}
static ssize_t iio_bfin_tmr_frequency_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_trigger *trig = dev_get_drvdata(dev);
struct bfin_tmr_state *st = trig->private_data;
return sprintf(buf, "%lu\n",
get_sclk() / get_gptimer_period(st->t->id));
}
static int iio_bfin_tmr_set_state(struct iio_trigger *trig, bool state)
{
struct bfin_tmr_state *st = trig->private_data;
if (get_gptimer_period(st->t->id) == 0)
return -EINVAL;
if (state)
enable_gptimers(st->t->bit);
else
disable_gptimers(st->t->bit);
return 0;
}
static irqreturn_t gptimer_example_irq(int irq, void *dev_id)
{
struct gptimer_data *data = dev_id;
if (!get_gptimer_intr(TIMER5_id))
return IRQ_NONE;
data->width = get_gptimer_pwidth(TIMER5_id);
data->period = get_gptimer_period(TIMER5_id);
clear_gptimer_intr(TIMER5_id);
return IRQ_HANDLED;
}
static irqreturn_t gptimer_example_irq(int irq, void *dev_id)
{
struct gptimer_data *data = dev_id;
/* make sure it was our timer which caused the interrupt */
if (!get_gptimer_intr(TIMER5_id))
return IRQ_NONE;
/* read the width/period values that were captured for the waveform */
data->width = get_gptimer_pwidth(TIMER5_id);
data->period = get_gptimer_period(TIMER5_id);
/* acknowledge the interrupt */
clear_gptimer_intr(TIMER5_id);
/* tell the upper layers we took care of things */
return IRQ_HANDLED;
}
