52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef _LINUX_VIRTIO_CLK_H
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#define _LINUX_VIRTIO_CLK_H
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#include <linux/types.h>
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#include <linux/virtio_ids.h>
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#include <linux/virtio_config.h>
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#include <linux/virtio_types.h>
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/* Virtio ID of clock */
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#ifdef VIRTIO_ID_CLOCK
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#undef VIRTIO_ID_CLOCK
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#endif
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/* Virtio ID of clock : 0xC000 */
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#define VIRTIO_ID_CLOCK 49152
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/* Feature bits */
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#define VIRTIO_CLK_F_RESET 1 /* Support reset */
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#define VIRTIO_CLK_F_NAME 2 /* Support clock name */
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/* Configuration layout */
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struct virtio_clk_config {
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__u32 num_clks;
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__u32 num_resets;
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__u8 name[20];
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} __packed;
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/* Request/response message format */
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struct virtio_clk_msg {
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u8 name[40];
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__virtio32 id;
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__virtio32 type;
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__virtio32 result;
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__virtio32 data[4];
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};
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/* Request type */
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#define VIRTIO_CLK_T_ENABLE 0
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#define VIRTIO_CLK_T_DISABLE 1
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#define VIRTIO_CLK_T_SET_RATE 2
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#define VIRTIO_CLK_T_GET_RATE 3
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#define VIRTIO_CLK_T_ROUND_RATE 4
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#define VIRTIO_CLK_T_RESET 5
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#define VIRTIO_CLK_T_SET_FLAGS 6
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#define VIRTIO_CLK_T_SET_PARENT 8
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#endif /* _LINUX_VIRTIO_CLK_H */
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