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66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2020 Loongson Corporation
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*/
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/*
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* Authors:
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* Sui Jingfeng <suijingfeng@loongson.cn>
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*/
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#ifndef __LSDC_I2C__
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#define __LSDC_I2C__
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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struct lsdc_i2c {
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struct drm_device *ddev;
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struct i2c_adapter adapter;
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struct i2c_algo_bit_data bit;
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/* bit mask */
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u8 sda;
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u8 scl;
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void __iomem *dir_reg;
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void __iomem *dat_reg;
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};
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void lsdc_destroy_i2c(struct drm_device *ddev, struct i2c_adapter *i2c);
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int lsdc_get_i2c_id(struct drm_device *ddev, const unsigned int con_id);
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struct i2c_adapter *ls2k_get_i2c_chan(struct drm_device *ddev,
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unsigned int index);
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struct i2c_adapter *
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ls7a_create_i2c_chan(struct drm_device *ddev, unsigned int index);
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struct i2c_adapter *
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lsdc_of_retrieve_ddc(struct drm_device *ddev, unsigned int index);
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#endif
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