1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index 1663f940ca11..3387e44dfd13 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;