/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright 2020 Loongson Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 */

/*
 * Authors:
 *      Sui Jingfeng <suijingfeng@loongson.cn>
 */


#ifndef __LSDC_I2C__
#define __LSDC_I2C__

#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>


struct lsdc_i2c {
	struct drm_device *ddev;
	struct i2c_adapter adapter;
	struct i2c_algo_bit_data bit;
	/* bit mask */
	u8 sda;
	u8 scl;

	void __iomem *dir_reg;
	void __iomem *dat_reg;
};


void lsdc_destroy_i2c(struct drm_device *ddev, struct i2c_adapter *i2c);

int lsdc_get_i2c_id(struct drm_device *ddev, const unsigned int con_id);

struct i2c_adapter *ls2k_get_i2c_chan(struct drm_device *ddev,
				      unsigned int index);

struct i2c_adapter *
ls7a_create_i2c_chan(struct drm_device *ddev, unsigned int index);

struct i2c_adapter *
lsdc_of_retrieve_ddc(struct drm_device *ddev, unsigned int index);

#endif