From: Imre Deak <imre.deak@nokia.com>
Date: Thu, 18 Jan 2007 05:45:38 +0000 (-0500)
Subject: Input: ads7846 - select correct SPI mode
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7937e86a70235e1584486654687dc9908a11e00a;p=openwrt%2Fstaging%2Fblogic.git

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>
---

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();