From: Semih Hazar <[EMAIL PROTECTED]> 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 7937e86a70235e1584486654687dc9908a11e00a [2] http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus Signed-off-by: David Brownell <[EMAIL PROTECTED]> --- drivers/input/touchscreen/ads7846.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- g26.orig/drivers/input/touchscreen/ads7846.c 2007-05-20 21:08:30.000000000 -0700 +++ g26/drivers/input/touchscreen/ads7846.c 2007-05-20 21:08:54.000000000 -0700 @@ -847,7 +847,7 @@ 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; + spi->mode = SPI_MODE_0; err = spi_setup(spi); if (err < 0) return err;
