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authorJames Morris <james.l.morris@oracle.com>2012-06-10 22:52:10 +1000
committerJames Morris <james.l.morris@oracle.com>2012-06-10 22:52:10 +1000
commit66dd07b88a1c9d446f32253da606b87324fa620e (patch)
tree4e0971bdd543585c7ab46716ae808a7fd82f9c35 /include/linux/i2c-mux-gpio.h
parentf52c44cd27b4a0be37ef97f0466e4095ebebef3f (diff)
parentcfaf025112d3856637ff34a767ef785ef5cf2ca9 (diff)
Merge commit 'v3.5-rc2' into next
Diffstat (limited to 'include/linux/i2c-mux-gpio.h')
-rw-r--r--include/linux/i2c-mux-gpio.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/i2c-mux-gpio.h b/include/linux/i2c-mux-gpio.h
new file mode 100644
index 000000000000..a36343a37ebc
--- /dev/null
+++ b/include/linux/i2c-mux-gpio.h
@@ -0,0 +1,38 @@
+/*
+ * 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)
+ * @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 *gpios;
+ int n_gpios;
+ unsigned idle;
+};
+
+#endif /* _LINUX_I2C_MUX_GPIO_H */