static int pixcir_start(struct pixcir_i2c_ts_data *ts)
{
struct device *dev = &ts->client->dev;
int error;
/* LEVEL_TOUCH interrupt with active low polarity */
error = pixcir_set_int_mode(ts, PIXCIR_INT_LEVEL_TOUCH, 0);
if (error) {
dev_err(dev, "Failed to set interrupt mode: %d\n", error);
return error;
}
ts->running = true;
mb(); /* Update status before IRQ can fire */
/* enable interrupt generation */
error = pixcir_int_enable(ts, true);
if (error) {
dev_err(dev, "Failed to enable interrupt generation: %d\n",
error);
return error;
}
return 0;
}
static int pixcir_stop(struct pixcir_i2c_ts_data *ts)
{
int error;
/* Disable interrupt generation */
error = pixcir_int_enable(ts, false);
if (error) {
dev_err(&ts->client->dev,
"Failed to disable interrupt generation: %d\n",
error);
return error;
}
/* Exit ISR if running, no more report parsing */
ts->running = false;
mb(); /* update status before we synchronize irq */
/* Wait till running ISR is complete */
synchronize_irq(ts->client->irq);
if (ts->gpio_enable)
gpiod_set_value_cansleep(ts->gpio_enable, 0);
return 0;
}
