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
25struct 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
55enum cygnus_audio_port_type {
56	PORT_TDM,
57	PORT_SPDIF,
58};
59
60struct 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
74struct cygnus_track_clk {
75	bool cap_en;
76	bool play_en;
77	bool cap_clk_en;
78	bool play_clk_en;
79};
80
81struct 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
107struct 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
120extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
121						int len);
122extern int cygnus_soc_platform_register(struct device *dev,
123					struct cygnus_audio *cygaud);
124extern int cygnus_soc_platform_unregister(struct device *dev);
125extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
126	int len);
127#endif
128