1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * skl-i2s.h - i2s blob mapping
4 *
5 * Copyright (C) 2017 Intel Corp
6 * Author: Subhransu S. Prusty < subhransu.s.prusty@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10 */
11
12 #ifndef __SOUND_SOC_SKL_I2S_H
13 #define __SOUND_SOC_SKL_I2S_H
14
15 #define SKL_I2S_MAX_TIME_SLOTS 8
16 #define SKL_MCLK_DIV_CLK_SRC_MASK GENMASK(17, 16)
17
18 #define SKL_MNDSS_DIV_CLK_SRC_MASK GENMASK(21, 20)
19 #define SKL_SHIFT(x) (ffs(x) - 1)
20 #define SKL_MCLK_DIV_RATIO_MASK GENMASK(11, 0)
21
22 #define is_legacy_blob(x) (x.signature != 0xEE)
23 #define ext_to_legacy_blob(i2s_config_blob_ext) \
24 ((struct skl_i2s_config_blob_legacy *) i2s_config_blob_ext)
25
26 #define get_clk_src(mclk, mask) \
27 ((mclk.mdivctrl & mask) >> SKL_SHIFT(mask))
28 struct skl_i2s_config {
29 u32 ssc0;
30 u32 ssc1;
31 u32 sscto;
32 u32 sspsp;
33 u32 sstsa;
34 u32 ssrsa;
35 u32 ssc2;
36 u32 sspsp2;
37 u32 ssc3;
38 u32 ssioc;
39 } __packed;
40
41 struct skl_i2s_config_mclk {
42 u32 mdivctrl;
43 u32 mdivr;
44 };
45
46 struct skl_i2s_config_mclk_ext {
47 u32 mdivctrl;
48 u32 mdivr_count;
49 u32 mdivr[];
50 } __packed;
51
52 struct skl_i2s_config_blob_signature {
53 u32 minor_ver : 8;
54 u32 major_ver : 8;
55 u32 resvdz : 8;
56 u32 signature : 8;
57 } __packed;
58
59 struct skl_i2s_config_blob_header {
60 struct skl_i2s_config_blob_signature sig;
61 u32 size;
62 };
63
64 /**
65 * struct skl_i2s_config_blob_legacy - Structure defines I2S Gateway
66 * configuration legacy blob
67 *
68 * @gtw_attr: Gateway attribute for the I2S Gateway
69 * @tdm_ts_group: TDM slot mapping against channels in the Gateway.
70 * @i2s_cfg: I2S HW registers
71 * @mclk: MCLK clock source and divider values
72 */
73 struct skl_i2s_config_blob_legacy {
74 u32 gtw_attr;
75 u32 tdm_ts_group[SKL_I2S_MAX_TIME_SLOTS];
76 struct skl_i2s_config i2s_cfg;
77 struct skl_i2s_config_mclk mclk;
78 };
79
80 struct skl_i2s_config_blob_ext {
81 u32 gtw_attr;
82 struct skl_i2s_config_blob_header hdr;
83 u32 tdm_ts_group[SKL_I2S_MAX_TIME_SLOTS];
84 struct skl_i2s_config i2s_cfg;
85 struct skl_i2s_config_mclk_ext mclk;
86 } __packed;
87 #endif /* __SOUND_SOC_SKL_I2S_H */
88
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