Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / spi / max7301.h

diff --git a/kernel/include/linux/spi/max7301.h b/kernel/include/linux/spi/max7301.h
new file mode 100644 (file)
index 0000000..bcaa2f7
--- /dev/null
+++ b/kernel/include/linux/spi/max7301.h
@@ -0,0 +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