linux-kernel - [patch 2.6.20-rc1 5/6] input: ads7846 forces SPI mode 1

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Message-Id: <20061222192431.72EDB1F0D22@adsl-69-226-248-13.dsl.pltn13.pacbell.net>
Date:	Fri, 22 Dec 2006 11:24:31 -0800
From:	David Brownell <david-b@...bell.net>
To:	nicolas.ferre@....atmel.com, linux-kernel@...r.kernel.org,
	dtor_core@...ritech.net
Subject: [patch 2.6.20-rc1 5/6] input: ads7846 forces SPI mode 1

From: Imre Deak <imre.deak@...ia.com>
Date:  Fri May 26 16:30:10 2006 -0700

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@...ia.com>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: David Brownell <dbrownell@...rs.sourceforge.net>

Index: osk/drivers/input/touchscreen/ads7846.c
===================================================================
--- osk.orig/drivers/input/touchscreen/ads7846.c	2006-12-22 11:08:45.000000000 -0800
+++ osk/drivers/input/touchscreen/ads7846.c	2006-12-22 11:08:46.000000000 -0800
@@ -773,6 +773,10 @@ static int __devinit ads7846_probe(struc
 	 * 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();
-
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