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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2020 DisplayLink (UK) Ltd.
*
* This file is subject to the terms and conditions of the GNU General Public
* License v2. See the file COPYING in the main directory of this archive for
* more details.
*/
#include "evdi_i2c.h"
#include "evdi_debug.h"
#include "evdi_drm_drv.h"
static int dli2c_access_master(struct i2c_adapter *adapter,
struct i2c_msg *msgs, int num)
{
int i = 0, result = 0;
struct evdi_device *evdi = adapter->algo_data;
struct evdi_painter *painter = evdi->painter;
for (i = 0; i < num; i++) {
if (evdi_painter_i2c_data_notify(painter, &msgs[i]))
result++;
}
return result;
}
static u32 dli2c_func(__always_unused struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C;
}
static struct i2c_algorithm dli2c_algorithm = {
.master_xfer = dli2c_access_master,
.functionality = dli2c_func,
};
int evdi_i2c_add(struct i2c_adapter *adapter, struct device *parent,
void *ddev)
{
adapter->owner = THIS_MODULE;
#if KERNEL_VERSION(6, 8, 0) <= LINUX_VERSION_CODE || defined(EL9)
#else
adapter->class = I2C_CLASS_DDC;
#endif
adapter->algo = &dli2c_algorithm;
strscpy(adapter->name, "DisplayLink I2C Adapter", sizeof(adapter->name));
adapter->dev.parent = parent;
adapter->algo_data = ddev;
return i2c_add_adapter(adapter);
}
void evdi_i2c_remove(struct i2c_adapter *adapter)
{
i2c_del_adapter(adapter);
}
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