/* * 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/regulator/consumer.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. * @supplies: regulators for powering on the device. * @post_power_delay_ms: delay after powering on before device is usable. * * 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; struct regulator_bulk_data supplies[2]; int post_power_delay_ms; }; #endif /* __LINUX_I2C_HID_H */