W1: feature, enable hardware strong pullup

[mirror_ubuntu-zesty-kernel.git] / drivers / w1 / w1.h

diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h
index 34ee01e008adf19a7501e719cc590b5edc9c597a..00b84ab22808e32fcfed046cbddfa6f11fa379a2 100644 (file)
--- a/drivers/w1/w1.h
+++ b/drivers/w1/w1.h
@@ -142,6 +142,12 @@ struct w1_bus_master
         */
        u8              (*reset_bus)(void *);
 
+       /**
+        * Put out a strong pull-up pulse of the specified duration.
+        * @return -1=Error, 0=completed
+        */
+       u8              (*set_pullup)(void *, int);
+
        /** Really nice hardware can handles the different types of ROM search
         *  w1_master* is passed to the slave found callback.
         */
@@ -167,6 +173,11 @@ struct w1_master
        void                    *priv;
        int                     priv_size;
 
+       /** 5V strong pullup enabled flag, 1 enabled, zero disabled. */
+       int                     enable_pullup;
+       /** 5V strong pullup duration in milliseconds, zero disabled. */
+       int                     pullup_duration;
+
        struct task_struct      *thread;
        struct mutex            mutex;
 
@@ -201,6 +212,7 @@ u8 w1_calc_crc8(u8 *, int);
 void w1_write_block(struct w1_master *, const u8 *, int);
 u8 w1_read_block(struct w1_master *, u8 *, int);
 int w1_reset_select_slave(struct w1_slave *sl);
+void w1_next_pullup(struct w1_master *, int);
 
 static inline struct w1_slave* dev_to_w1_slave(struct device *dev)
 {