Input: ads7846 - select correct SPI mode

Talk to ADS7846 chip using SPI mode 1, which is what the chip
supports: writes on falling clock edge, reads on rising.

Signed-off-by: Imre Deak <imre.deak@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index d983cc51ad32..11979be33589 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -710,6 +710,10 @@ static int __devinit ads7846_probe(struct spi_device *spi)
          * may not.  So we stick to very-portable 8 bit words, both RX and TX.
          */
         spi->bits_per_word = 8;
+        spi->mode = SPI_MODE_1;
+        err = spi_setup(spi);
+        if (err < 0)
+                return err;
 
         ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL);
         input_dev = input_allocate_device();