1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* Copyright (C) 2014-2015 Broadcom Corporation */ |
3 | #ifndef __CYGNUS_SSP_H__ |
4 | #define __CYGNUS_SSP_H__ |
5 | |
6 | #define CYGNUS_TDM_DAI_MAX_SLOTS 16 |
7 | |
8 | #define CYGNUS_MAX_PLAYBACK_PORTS 4 |
9 | #define CYGNUS_MAX_CAPTURE_PORTS 3 |
10 | #define CYGNUS_MAX_I2S_PORTS 3 |
11 | #define CYGNUS_MAX_PORTS CYGNUS_MAX_PLAYBACK_PORTS |
12 | #define CYGNUS_AUIDO_MAX_NUM_CLKS 3 |
13 | |
14 | #define CYGNUS_SSP_FRAMEBITS_DIV 1 |
15 | |
16 | #define CYGNUS_SSPMODE_I2S 0 |
17 | #define CYGNUS_SSPMODE_TDM 1 |
18 | #define CYGNUS_SSPMODE_UNKNOWN -1 |
19 | |
20 | #define CYGNUS_SSP_CLKSRC_PLL 0 |
21 | |
22 | /* Max string length of our dt property names */ |
23 | #define PROP_LEN_MAX 40 |
24 | |
25 | struct ringbuf_regs { |
26 | unsigned rdaddr; |
27 | unsigned wraddr; |
28 | unsigned baseaddr; |
29 | unsigned endaddr; |
30 | unsigned fmark; /* freemark for play, fullmark for caputure */ |
31 | unsigned period_bytes; |
32 | unsigned buf_size; |
33 | }; |
34 | |
35 | #define RINGBUF_REG_PLAYBACK(num) ((struct ringbuf_regs) { \ |
36 | .rdaddr = SRC_RBUF_ ##num## _RDADDR_OFFSET, \ |
37 | .wraddr = SRC_RBUF_ ##num## _WRADDR_OFFSET, \ |
38 | .baseaddr = SRC_RBUF_ ##num## _BASEADDR_OFFSET, \ |
39 | .endaddr = SRC_RBUF_ ##num## _ENDADDR_OFFSET, \ |
40 | .fmark = SRC_RBUF_ ##num## _FREE_MARK_OFFSET, \ |
41 | .period_bytes = 0, \ |
42 | .buf_size = 0, \ |
43 | }) |
44 | |
45 | #define RINGBUF_REG_CAPTURE(num) ((struct ringbuf_regs) { \ |
46 | .rdaddr = DST_RBUF_ ##num## _RDADDR_OFFSET, \ |
47 | .wraddr = DST_RBUF_ ##num## _WRADDR_OFFSET, \ |
48 | .baseaddr = DST_RBUF_ ##num## _BASEADDR_OFFSET, \ |
49 | .endaddr = DST_RBUF_ ##num## _ENDADDR_OFFSET, \ |
50 | .fmark = DST_RBUF_ ##num## _FULL_MARK_OFFSET, \ |
51 | .period_bytes = 0, \ |
52 | .buf_size = 0, \ |
53 | }) |
54 | |
55 | enum cygnus_audio_port_type { |
56 | PORT_TDM, |
57 | PORT_SPDIF, |
58 | }; |
59 | |
60 | struct cygnus_ssp_regs { |
61 | u32 i2s_stream_cfg; |
62 | u32 i2s_cfg; |
63 | u32 i2s_cap_stream_cfg; |
64 | u32 i2s_cap_cfg; |
65 | u32 i2s_mclk_cfg; |
66 | |
67 | u32 bf_destch_ctrl; |
68 | u32 bf_destch_cfg; |
69 | u32 bf_sourcech_ctrl; |
70 | u32 bf_sourcech_cfg; |
71 | u32 bf_sourcech_grp; |
72 | }; |
73 | |
74 | struct cygnus_track_clk { |
75 | bool cap_en; |
76 | bool play_en; |
77 | bool cap_clk_en; |
78 | bool play_clk_en; |
79 | }; |
80 | |
81 | struct cygnus_aio_port { |
82 | int portnum; |
83 | int mode; |
84 | bool is_slave; |
85 | int streams_on; /* will be 0 if both capture and play are off */ |
86 | int fsync_width; |
87 | int port_type; |
88 | |
89 | u32 mclk; |
90 | u32 lrclk; |
91 | u32 bit_per_frame; |
92 | u32 pll_clk_num; |
93 | |
94 | struct cygnus_audio *cygaud; |
95 | struct cygnus_ssp_regs regs; |
96 | |
97 | struct ringbuf_regs play_rb_regs; |
98 | struct ringbuf_regs capture_rb_regs; |
99 | |
100 | struct snd_pcm_substream *play_stream; |
101 | struct snd_pcm_substream *capture_stream; |
102 | |
103 | struct cygnus_track_clk clk_trace; |
104 | }; |
105 | |
106 | |
107 | struct cygnus_audio { |
108 | struct cygnus_aio_port portinfo[CYGNUS_MAX_PORTS]; |
109 | |
110 | int irq_num; |
111 | void __iomem *audio; |
112 | struct device *dev; |
113 | void __iomem *i2s_in; |
114 | |
115 | struct clk *audio_clk[CYGNUS_AUIDO_MAX_NUM_CLKS]; |
116 | int active_ports; |
117 | unsigned long vco_rate; |
118 | }; |
119 | |
120 | extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai, |
121 | int len); |
122 | extern int cygnus_soc_platform_register(struct device *dev, |
123 | struct cygnus_audio *cygaud); |
124 | extern int cygnus_soc_platform_unregister(struct device *dev); |
125 | extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai, |
126 | int len); |
127 | #endif |
128 | |