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/* Copyright (c) 2019, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _LINUX_VIRTIO_CLK_H
#define _LINUX_VIRTIO_CLK_H
#include <linux/types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
#include <linux/virtio_types.h>
/* Feature bits */
#define VIRTIO_CLK_F_RESET 1 /* Support reset */
#define VIRTIO_CLK_F_NAME 2 /* Support clock name */
/* Configuration layout */
struct virtio_clk_config {
__u32 num_clks;
__u32 num_resets;
__u8 name[20];
} __packed;
/* Request/response message format */
struct virtio_clk_msg {
u8 name[40];
__virtio32 id;
__virtio32 type;
__virtio32 result;
__virtio32 data[4];
};
/* Request type */
#define VIRTIO_CLK_T_ENABLE 0
#define VIRTIO_CLK_T_DISABLE 1
#define VIRTIO_CLK_T_SET_RATE 2
#define VIRTIO_CLK_T_GET_RATE 3
#define VIRTIO_CLK_T_ROUND_RATE 4
#define VIRTIO_CLK_T_RESET 5
#define VIRTIO_CLK_T_SET_FLAGS 6
#endif /* _LINUX_VIRTIO_CLK_H */
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