1 files changed, 43 insertions, 0 deletions

diff --git a/include/linux/platform_data/i2c-mux-gpio.h b/include/linux/platform_data/i2c-mux-gpio.h
new file mode 100644
index 000000000000..4406108201fe
--- /dev/null
+++ b/include/linux/platform_data/i2c-mux-gpio.h
@@ -0,0 +1,43 @@
+/*
+ * i2c-mux-gpio interface to platform code
+ *
+ * Peter Korsgaard <peter.korsgaard@barco.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_I2C_MUX_GPIO_H
+#define _LINUX_I2C_MUX_GPIO_H
+
+/* MUX has no specific idle mode */
+#define I2C_MUX_GPIO_NO_IDLE    ((unsigned)-1)
+
+/**
+ * struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio
+ * @parent: Parent I2C bus adapter number
+ * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
+ * @values: Array of bitmasks of GPIO settings (low/high) for each
+ *      position
+ * @n_values: Number of multiplexer positions (busses to instantiate)
+ * @classes: Optional I2C auto-detection classes
+ * @gpio_chip: Optional GPIO chip name; if set, GPIO pin numbers are given
+ *      relative to the base GPIO number of that chip
+ * @gpios: Array of GPIO numbers used to control MUX
+ * @n_gpios: Number of GPIOs used to control MUX
+ * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used
+ */
+struct i2c_mux_gpio_platform_data {
+        int parent;
+        int base_nr;
+        const unsigned *values;
+        int n_values;
+        const unsigned *classes;
+        char *gpio_chip;
+        const unsigned *gpios;
+        int n_gpios;
+        unsigned idle;
+};
+
+#endif /* _LINUX_I2C_MUX_GPIO_H */