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