1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
3// Copyright (c) 2018, Linaro Limited
4
5#include "q6dsp-common.h"
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/string.h>
9#include <linux/errno.h>
10
11int q6dsp_map_channels(u8 ch_map[PCM_MAX_NUM_CHANNEL], int ch)
12{
13	memset(ch_map, 0, PCM_MAX_NUM_CHANNEL);
14
15	switch (ch) {
16	case 1:
17		ch_map[0] = PCM_CHANNEL_FC;
18		break;
19	case 2:
20		ch_map[0] = PCM_CHANNEL_FL;
21		ch_map[1] = PCM_CHANNEL_FR;
22		break;
23	case 3:
24		ch_map[0] = PCM_CHANNEL_FL;
25		ch_map[1] = PCM_CHANNEL_FR;
26		ch_map[2] = PCM_CHANNEL_FC;
27		break;
28	case 4:
29		ch_map[0] = PCM_CHANNEL_FL;
30		ch_map[1] = PCM_CHANNEL_FR;
31		ch_map[2] = PCM_CHANNEL_LS;
32		ch_map[3] = PCM_CHANNEL_RS;
33		break;
34	case 5:
35		ch_map[0] = PCM_CHANNEL_FL;
36		ch_map[1] = PCM_CHANNEL_FR;
37		ch_map[2] = PCM_CHANNEL_FC;
38		ch_map[3] = PCM_CHANNEL_LS;
39		ch_map[4] = PCM_CHANNEL_RS;
40		break;
41	case 6:
42		ch_map[0] = PCM_CHANNEL_FL;
43		ch_map[1] = PCM_CHANNEL_FR;
44		ch_map[2] = PCM_CHANNEL_LFE;
45		ch_map[3] = PCM_CHANNEL_FC;
46		ch_map[4] = PCM_CHANNEL_LS;
47		ch_map[5] = PCM_CHANNEL_RS;
48		break;
49	case 8:
50		ch_map[0] = PCM_CHANNEL_FL;
51		ch_map[1] = PCM_CHANNEL_FR;
52		ch_map[2] = PCM_CHANNEL_LFE;
53		ch_map[3] = PCM_CHANNEL_FC;
54		ch_map[4] = PCM_CHANNEL_LS;
55		ch_map[5] = PCM_CHANNEL_RS;
56		ch_map[6] = PCM_CHANNEL_LB;
57		ch_map[7] = PCM_CHANNEL_RB;
58		break;
59	default:
60		return -EINVAL;
61	}
62
63	return 0;
64}
65EXPORT_SYMBOL_GPL(q6dsp_map_channels);
66MODULE_LICENSE("GPL v2");
67