130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (C) 2014-2015 Broadcom Corporation */
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#ifndef __CYGNUS_SSP_H__
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#define __CYGNUS_SSP_H__
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#define CYGNUS_TDM_DAI_MAX_SLOTS 16
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#define CYGNUS_MAX_PLAYBACK_PORTS 4
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#define CYGNUS_MAX_CAPTURE_PORTS 3
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#define CYGNUS_MAX_I2S_PORTS 3
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#define CYGNUS_MAX_PORTS CYGNUS_MAX_PLAYBACK_PORTS
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#define CYGNUS_AUIDO_MAX_NUM_CLKS 3
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#define CYGNUS_SSP_FRAMEBITS_DIV 1
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#define CYGNUS_SSPMODE_I2S 0
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#define CYGNUS_SSPMODE_TDM 1
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#define CYGNUS_SSPMODE_UNKNOWN -1
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#define CYGNUS_SSP_CLKSRC_PLL 0
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/* Max string length of our dt property names */
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#define PROP_LEN_MAX 40
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struct ringbuf_regs {
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unsigned rdaddr;
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unsigned wraddr;
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unsigned baseaddr;
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unsigned endaddr;
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unsigned fmark; /* freemark for play, fullmark for caputure */
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unsigned period_bytes;
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unsigned buf_size;
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};
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#define RINGBUF_REG_PLAYBACK(num) ((struct ringbuf_regs) { \
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.rdaddr = SRC_RBUF_ ##num## _RDADDR_OFFSET, \
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.wraddr = SRC_RBUF_ ##num## _WRADDR_OFFSET, \
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.baseaddr = SRC_RBUF_ ##num## _BASEADDR_OFFSET, \
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.endaddr = SRC_RBUF_ ##num## _ENDADDR_OFFSET, \
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.fmark = SRC_RBUF_ ##num## _FREE_MARK_OFFSET, \
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.period_bytes = 0, \
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.buf_size = 0, \
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})
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#define RINGBUF_REG_CAPTURE(num) ((struct ringbuf_regs) { \
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.rdaddr = DST_RBUF_ ##num## _RDADDR_OFFSET, \
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.wraddr = DST_RBUF_ ##num## _WRADDR_OFFSET, \
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.baseaddr = DST_RBUF_ ##num## _BASEADDR_OFFSET, \
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.endaddr = DST_RBUF_ ##num## _ENDADDR_OFFSET, \
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.fmark = DST_RBUF_ ##num## _FULL_MARK_OFFSET, \
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.period_bytes = 0, \
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.buf_size = 0, \
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})
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enum cygnus_audio_port_type {
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PORT_TDM,
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PORT_SPDIF,
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};
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struct cygnus_ssp_regs {
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u32 i2s_stream_cfg;
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u32 i2s_cfg;
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u32 i2s_cap_stream_cfg;
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u32 i2s_cap_cfg;
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u32 i2s_mclk_cfg;
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u32 bf_destch_ctrl;
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u32 bf_destch_cfg;
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u32 bf_sourcech_ctrl;
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u32 bf_sourcech_cfg;
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u32 bf_sourcech_grp;
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};
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struct cygnus_track_clk {
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bool cap_en;
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bool play_en;
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bool cap_clk_en;
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bool play_clk_en;
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};
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struct cygnus_aio_port {
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int portnum;
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int mode;
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bool is_slave;
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int streams_on; /* will be 0 if both capture and play are off */
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int fsync_width;
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int port_type;
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u32 mclk;
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u32 lrclk;
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u32 bit_per_frame;
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u32 pll_clk_num;
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struct cygnus_audio *cygaud;
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struct cygnus_ssp_regs regs;
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struct ringbuf_regs play_rb_regs;
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struct ringbuf_regs capture_rb_regs;
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struct snd_pcm_substream *play_stream;
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struct snd_pcm_substream *capture_stream;
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struct cygnus_track_clk clk_trace;
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};
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struct cygnus_audio {
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struct cygnus_aio_port portinfo[CYGNUS_MAX_PORTS];
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int irq_num;
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void __iomem *audio;
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struct device *dev;
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void __iomem *i2s_in;
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struct clk *audio_clk[CYGNUS_AUIDO_MAX_NUM_CLKS];
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int active_ports;
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unsigned long vco_rate;
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};
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extern int cygnus_ssp_get_mode(struct snd_soc_dai *cpu_dai);
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extern int cygnus_ssp_add_pll_tweak_controls(struct snd_soc_pcm_runtime *rtd);
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extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
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int len);
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extern int cygnus_soc_platform_register(struct device *dev,
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struct cygnus_audio *cygaud);
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extern int cygnus_soc_platform_unregister(struct device *dev);
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extern int cygnus_ssp_set_custom_fsync_width(struct snd_soc_dai *cpu_dai,
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int len);
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#endif
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