From de2defd96d7d92fe8b5f9cf2bfd385d8d4819923 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Thu, 18 Jan 2007 00:45:21 -0500 Subject: Input: ads7846 - optionally leave Vref on during differential measurements On some LCDs leaving the Vref on provides much better readings. Signed-off-by: Jarkko Oikarinen Signed-off-by: Imre Deak Signed-off-by: Juha Yrjola Signed-off-by: David Brownell Signed-off-by: Dmitry Torokhov --- include/linux/spi/ads7846.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/spi') diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index 1663f940ca1..3387e44dfd1 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -14,6 +14,8 @@ enum ads7846_filter { struct ads7846_platform_data { u16 model; /* 7843, 7845, 7846. */ u16 vref_delay_usecs; /* 0 for external vref; etc */ + int keep_vref_on:1; /* set to keep vref on for differential + * measurements as well */ u16 x_plate_ohms; u16 y_plate_ohms; -- cgit