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Input: ads7846 - SPI_CPHA mode bugfix 

In commit [1] the SPI mode is set to 1, but it should be 0.  As stated
in the commit, ads784x samples the data on the rising edge.  SPI mode 1
samples on the falling edge [2] though.

The root cause of this is a bug in the omap_uwire code, which treats
CPHA=1 incorrectly; so these two bugs cancel each other out on one
of the main regression test platforms for this driver.

[1] kernel.org GIT 7937e86a70
[2] http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Semih Hazar 2007-05-22 23:35:12 -04:00 committed by Dmitry Torokhov
parent bff0de5f59
commit 230ffc8e34
1 changed files with 1 additions and 1 deletions
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2
drivers/input/touchscreen/ads7846.c
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@ -848,7 +848,7 @@ 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;
spi->mode = SPI_MODE_0;
err = spi_setup(spi);
if (err < 0)
return err;