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review.shift-gmbh.com / SHIFTPHONES / kernel / shift / mainline / bc519d9574618e47a0c788000fb78da95e18d953 / . / sound / soc / bcm / cygnus-ssp.h
blob: 33dd34305928f5bff5f8e1c05b75346c80e5450e [file] [log] [blame]
Simran Raia6ee05d2016-05-17 17:01:08 -0700[diff] [blame]1/*
2 * Copyright (C) 2014-2015 Broadcom Corporation
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation version 2.
7 *
8 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13#ifndef __CYGNUS_SSP_H__
14#define __CYGNUS_SSP_H__
15
16#define CYGNUS_TDM_DAI_MAX_SLOTS 16
17
18#define CYGNUS_MAX_PLAYBACK_PORTS 4
19#define CYGNUS_MAX_CAPTURE_PORTS 3
20#define CYGNUS_MAX_I2S_PORTS 3
21#define CYGNUS_MAX_PORTS CYGNUS_MAX_PLAYBACK_PORTS
22#define CYGNUS_AUIDO_MAX_NUM_CLKS 3
23
24#define CYGNUS_SSP_FRAMEBITS_DIV 1
25
26#define CYGNUS_SSPMODE_I2S 0
27#define CYGNUS_SSPMODE_TDM 1
28#define CYGNUS_SSPMODE_UNKNOWN -1
29
30#define CYGNUS_SSP_CLKSRC_PLL 0
31
32/* Max string length of our dt property names */
33#define PROP_LEN_MAX 40
34
35struct ringbuf_regs {
36 unsigned rdaddr;
37 unsigned wraddr;
38 unsigned baseaddr;
39 unsigned endaddr;
40 unsigned fmark; /* freemark for play, fullmark for caputure */
41 unsigned period_bytes;
42 unsigned buf_size;
43};
44
45#define RINGBUF_REG_PLAYBACK(num) ((struct ringbuf_regs) { \
46 .rdaddr = SRC_RBUF_ ##num## _RDADDR_OFFSET, \
47 .wraddr = SRC_RBUF_ ##num## _WRADDR_OFFSET, \
48 .baseaddr = SRC_RBUF_ ##num## _BASEADDR_OFFSET, \
49 .endaddr = SRC_RBUF_ ##num## _ENDADDR_OFFSET, \
50 .fmark = SRC_RBUF_ ##num## _FREE_MARK_OFFSET, \
51 .period_bytes = 0, \
52 .buf_size = 0, \
53})
54
55#define RINGBUF_REG_CAPTURE(num) ((struct ringbuf_regs) { \
56 .rdaddr = DST_RBUF_ ##num## _RDADDR_OFFSET, \
57 .wraddr = DST_RBUF_ ##num## _WRADDR_OFFSET, \
58 .baseaddr = DST_RBUF_ ##num## _BASEADDR_OFFSET, \
59 .endaddr = DST_RBUF_ ##num## _ENDADDR_OFFSET, \
60 .fmark = DST_RBUF_ ##num## _FULL_MARK_OFFSET, \
61 .period_bytes = 0, \
62 .buf_size = 0, \
63})
64
65enum cygnus_audio_port_type {
66 PORT_TDM,
67 PORT_SPDIF,
68};
69
70struct cygnus_ssp_regs {
71 u32 i2s_stream_cfg;
72 u32 i2s_cfg;
73 u32 i2s_cap_stream_cfg;
74 u32 i2s_cap_cfg;
75 u32 i2s_mclk_cfg;
76
77 u32 bf_destch_ctrl;
78 u32 bf_destch_cfg;
79 u32 bf_sourcech_ctrl;
80 u32 bf_sourcech_cfg;
81 u32 bf_sourcech_grp;
82};
83
84struct cygnus_track_clk {
85 bool cap_en;
86 bool play_en;
87 bool cap_clk_en;
88 bool play_clk_en;
89};
90
91struct cygnus_aio_port {
92 int portnum;
93 int mode;
94 bool is_slave;
95 int streams_on; /* will be 0 if both capture and play are off */
96 int fsync_width;
97 int port_type;
98
99 u32 mclk;
100 u32 lrclk;
101 u32 bit_per_frame;
102 u32 pll_clk_num;
103
104 struct cygnus_audio *cygaud;
105 struct cygnus_ssp_regs regs;
106
107 struct ringbuf_regs play_rb_regs;
108 struct ringbuf_regs capture_rb_regs;
109
110 struct snd_pcm_substream *play_stream;
111 struct snd_pcm_substream *capture_stream;
112
113 struct cygnus_track_clk clk_trace;
114};
115
116
117struct cygnus_audio {
118 struct cygnus_aio_port portinfo[CYGNUS_MAX_PORTS];
119
120 int irq_num;
121 void __iomem *audio;
122 struct device *dev;
123 void __iomem *i2s_in;
124
125 struct clk *audio_clk[CYGNUS_AUIDO_MAX_NUM_CLKS];
126 int active_ports;
127 unsigned long vco_rate;
128};
129
130extern int cygnus_ssp_get_mode(struct snd_soc_dai *cpu_dai);
131extern int cygnus_ssp_add_pll_tweak_controls(struct snd_soc_pcm_runtime *rtd);
132extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
133 int len);
134extern int cygnus_soc_platform_register(struct device *dev,
135 struct cygnus_audio *cygaud);
136extern int cygnus_soc_platform_unregister(struct device *dev);
137extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
138 int len);
139#endif