96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
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/*
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* Copyright (c) 2017 NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef _LINUX_TEGRA_I2C_RTCPU_H
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#define _LINUX_TEGRA_I2C_RTCPU_H
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#include <linux/i2c.h>
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#include <media/camera_common.h>
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struct tegra_i2c_rtcpu_sensor;
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struct tegra_i2c_rtcpu_config {
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unsigned int reg_bytes;
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};
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/*
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* Sensor registration
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*/
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#ifdef CONFIG_I2C_TEGRA_CAMRTC
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/* Find an I2C multi device, and register a sensor. */
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struct tegra_i2c_rtcpu_sensor *tegra_i2c_rtcpu_register_sensor(
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struct i2c_client *client,
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const struct tegra_i2c_rtcpu_config *config);
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#else
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static inline struct tegra_i2c_rtcpu_sensor *tegra_i2c_rtcpu_register_sensor(
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struct i2c_client *client,
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const struct tegra_i2c_rtcpu_config *config)
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{
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return NULL;
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}
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#endif
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/*
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* I2C transfer
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*/
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#ifdef CONFIG_I2C_TEGRA_CAMRTC
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/* Start or stop buffering of I2C transfer requests */
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int tegra_i2c_rtcpu_aggregate(
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struct tegra_i2c_rtcpu_sensor *sensor,
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bool start);
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/* Setting frame ID is available after aggregation started */
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int tegra_i2c_rtcpu_set_frame_id(
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struct tegra_i2c_rtcpu_sensor *sensor,
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int frame_id);
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/* Read one or more bytes from a sensor */
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int tegra_i2c_rtcpu_read_reg8(
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struct tegra_i2c_rtcpu_sensor *sensor,
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unsigned int addr,
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u8 *data,
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unsigned int count);
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/* Write one or more bytes to a sensor */
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int tegra_i2c_rtcpu_write_reg8(
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struct tegra_i2c_rtcpu_sensor *sensor,
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unsigned int addr,
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const u8 *data,
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unsigned int count);
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/* Write a table */
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int tegra_i2c_rtcpu_write_table_8(
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struct tegra_i2c_rtcpu_sensor *sensor,
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const struct reg_8 table[],
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const struct reg_8 override_list[],
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int num_override_regs, u16 wait_ms_addr, u16 end_addr);
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#else
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#define tegra_i2c_rtcpu_aggregate(...) (0)
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#define tegra_i2c_rtcpu_set_frame_id(...) (0)
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#define tegra_i2c_rtcpu_read_reg8(...) (-ENODEV)
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#define tegra_i2c_rtcpu_write_reg8(...) (-ENODEV)
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#define tegra_i2c_rtcpu_write_table_8(...) (-ENODEV)
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#endif
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#endif /* _LINUX_TEGRA_I2C_RTCPU_H */
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