common/i2c_peripheral.c

/* Copyright 2017 The ChromiumOS Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

/* I2C peripheral cross-platform code for Chrome EC */

#include "host_command.h"
#include "i2c.h"
#include "util.h"

/**
 * Command handler to get host command protocol information
 *
 * @param args:	host command handler arguments
 * @return	EC_SUCCESS
 */
static enum ec_status i2c_get_protocol_info(struct host_cmd_handler_args *args)
{
	struct ec_response_get_protocol_info *r = args->response;

	memset(r, 0, sizeof(*r));
	r->protocol_versions = BIT(3);
	r->max_request_packet_size = I2C_MAX_HOST_PACKET_SIZE;
	r->max_response_packet_size = I2C_MAX_HOST_PACKET_SIZE;
	r->flags = 0;

	args->response_size = sizeof(*r);

	return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_GET_PROTOCOL_INFO, i2c_get_protocol_info,
		     EC_VER_MASK(0));