Merge branch 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[sfrench/cifs-2.6.git] / drivers / input / touchscreen / ads7846.c

diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 056ac77e2cf0ed6fe5624d9f62f35bbab2d57697..2b01e56568f8c023097c62c4185090c0587e91d1 100644 (file)
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -127,6 +127,8 @@ struct ads7846 {
        void                    (*filter_cleanup)(void *data);
        int                     (*get_pendown_state)(void);
        int                     gpio_pendown;
+
+       void                    (*wait_for_sync)(void);
 };
 
 /* leave chip selected when we're done, for quicker re-select? */
@@ -511,6 +513,10 @@ static int get_pendown_state(struct ads7846 *ts)
        return !gpio_get_value(ts->gpio_pendown);
 }
 
+static void null_wait_for_sync(void)
+{
+}
+
 /*
  * PENIRQ only kicks the timer.  The timer only reissues the SPI transfer,
  * to retrieve touchscreen status.
@@ -686,6 +692,7 @@ static void ads7846_rx_val(void *ads)
        default:
                BUG();
        }
+       ts->wait_for_sync();
        status = spi_async(ts->spi, m);
        if (status)
                dev_err(&ts->spi->dev, "spi_async --> %d\n",
@@ -723,6 +730,7 @@ static enum hrtimer_restart ads7846_timer(struct hrtimer *handle)
        } else {
                /* pen is still down, continue with the measurement */
                ts->msg_idx = 0;
+               ts->wait_for_sync();
                status = spi_async(ts->spi, &ts->msg[0]);
                if (status)
                        dev_err(&ts->spi->dev, "spi_async --> %d\n", status);
@@ -746,7 +754,7 @@ static irqreturn_t ads7846_irq(int irq, void *handle)
                         * that here.  (The "generic irq" framework may help...)
                         */
                        ts->irq_disabled = 1;
-                       disable_irq(ts->spi->irq);
+                       disable_irq_nosync(ts->spi->irq);
                        ts->pending = 1;
                        hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_DELAY),
                                        HRTIMER_MODE_REL);
@@ -947,6 +955,8 @@ static int __devinit ads7846_probe(struct spi_device *spi)
                ts->penirq_recheck_delay_usecs =
                                pdata->penirq_recheck_delay_usecs;
 
+       ts->wait_for_sync = pdata->wait_for_sync ? : null_wait_for_sync;
+
        snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&spi->dev));
 
        input_dev->name = "ADS784x Touchscreen";