1 files changed, 26 insertions, 0 deletions

diff --git a/include/linux/spi/max7301.h b/include/linux/spi/max7301.h
index 6dfd83f19b4b..bcaa2f762cc1 100644
--- a/include/linux/spi/max7301.h
+++ b/include/linux/spi/max7301.h
@@ -1,9 +1,35 @@
 #ifndef LINUX_SPI_MAX7301_H
 #define LINUX_SPI_MAX7301_H
 
+#include <linux/gpio.h>
+
+/*
+ * Some registers must be read back to modify.
+ * To save time we cache them here in memory
+ */
+struct max7301 {
+        struct mutex    lock;
+        u8              port_config[8]; /* field 0 is unused */
+        u32             out_level;      /* cached output levels */
+        u32             input_pullup_active;
+        struct gpio_chip chip;
+        struct device *dev;
+        int (*write)(struct device *dev, unsigned int reg, unsigned int val);
+        int (*read)(struct device *dev, unsigned int reg);
+};
+
 struct max7301_platform_data {
         /* number assigned to the first GPIO */
         unsigned        base;
+        /*
+         * bitmask controlling the pullup configuration,
+         *
+         * _note_ the 4 lowest bits are unused, because the first 4
+         * ports of the controller are not used, too.
+         */
+        u32             input_pullup_active;
 };
 
+extern int __max730x_remove(struct device *dev);
+extern int __max730x_probe(struct max7301 *ts);
 #endif