Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0
/*
 * Basic framing protocol for STM devices.
 * Copyright (c) 2018, Intel Corporation.
 */
 
#include <linux/module.h>
#include <linux/device.h>
#include <linux/stm.h>
#include "stm.h"
 
static ssize_t basic_write(struct stm_data *data, struct stm_output *output,
<------><------><------>   unsigned int chan, const char *buf, size_t count)
{
<------>unsigned int c = output->channel + chan;
<------>unsigned int m = output->master;
<------>const unsigned char nil = 0;
<------>ssize_t sz;
 
<------>sz = stm_data_write(data, m, c, true, buf, count);
<------>if (sz > 0)
<------><------>data->packet(data, m, c, STP_PACKET_FLAG, 0, 0, &nil);
 
<------>return sz;
}
 
static const struct stm_protocol_driver basic_pdrv = {
<------>.owner	= THIS_MODULE,
<------>.name	= "p_basic",
<------>.write	= basic_write,
};
 
static int basic_stm_init(void)
{
<------>return stm_register_protocol(&basic_pdrv);
}
 
static void basic_stm_exit(void)
{
<------>stm_unregister_protocol(&basic_pdrv);
}
 
module_init(basic_stm_init);
module_exit(basic_stm_exit);
 
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Basic STM framing protocol driver");
MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@linux.intel.com>");