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
140