Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / i2c / i2c-hid.h

diff --git a/kernel/include/linux/i2c/i2c-hid.h b/kernel/include/linux/i2c/i2c-hid.h
new file mode 100644 (file)
index 0000000..7aa901d
--- /dev/null
+++ b/kernel/include/linux/i2c/i2c-hid.h
@@ -0,0 +1,36 @@
+/*
+ * HID over I2C protocol implementation
+ *
+ * Copyright (c) 2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
+ * Copyright (c) 2012 Ecole Nationale de l'Aviation Civile, France
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#ifndef __LINUX_I2C_HID_H
+#define __LINUX_I2C_HID_H
+
+#include <linux/types.h>
+
+/**
+ * struct i2chid_platform_data - used by hid over i2c implementation.
+ * @hid_descriptor_address: i2c register where the HID descriptor is stored.
+ *
+ * Note that it is the responsibility of the platform driver (or the acpi 5.0
+ * driver, or the flattened device tree) to setup the irq related to the gpio in
+ * the struct i2c_board_info.
+ * The platform driver should also setup the gpio according to the device:
+ *
+ * A typical example is the following:
+ *     irq = gpio_to_irq(intr_gpio);
+ *     hkdk4412_i2c_devs5[0].irq = irq; // store the irq in i2c_board_info
+ *     gpio_request(intr_gpio, "elan-irq");
+ *     s3c_gpio_setpull(intr_gpio, S3C_GPIO_PULL_UP);
+ */
+struct i2c_hid_platform_data {
+       u16 hid_descriptor_address;
+};
+
+#endif /* __LINUX_I2C_HID_H */