mirror of https://gitee.com/openkylin/linux.git
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
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/*
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* Copyright 2009 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __NOUVEAU_I2C_H__
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#define __NOUVEAU_I2C_H__
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#include <linux/i2c.h>
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#include <linux/i2c-id.h>
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#include <linux/i2c-algo-bit.h>
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#include "drm_dp_helper.h"
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struct dcb_i2c_entry;
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struct nouveau_i2c_chan {
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struct i2c_adapter adapter;
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struct drm_device *dev;
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union {
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struct i2c_algo_bit_data bit;
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struct i2c_algo_dp_aux_data dp;
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} algo;
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unsigned rd;
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unsigned wr;
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unsigned data;
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};
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int nouveau_i2c_init(struct drm_device *, struct dcb_i2c_entry *, int index);
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void nouveau_i2c_fini(struct drm_device *, struct dcb_i2c_entry *);
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struct nouveau_i2c_chan *nouveau_i2c_find(struct drm_device *, int index);
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int nouveau_dp_i2c_aux_ch(struct i2c_adapter *, int mode, uint8_t write_byte,
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uint8_t *read_byte);
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#endif /* __NOUVEAU_I2C_H__ */
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