forked from Minki/linux
af94aa558b
Add suspend and resume support to Baytrail SST DSP. This is implemented by unloading firmware modules and putting DSP into reset prior suspend and restarting DSP again in normal boot state after resume. Context restore for running streams is implemented by scheduling a work from sst_byt_pcm_trigger() that will allocate a stream with existing parameters and start it from last known buffer position before suspend. [Jarkko: Squashed together 5 WIP patches from Liam and 1 from me] Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/*
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* Intel Baytrail SST IPC Support
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* Copyright (c) 2014, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __SST_BYT_IPC_H
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#define __SST_BYT_IPC_H
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#include <linux/types.h>
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struct sst_byt;
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struct sst_byt_stream;
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struct sst_pdata;
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extern struct sst_ops sst_byt_ops;
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#define SST_BYT_MAILBOX_OFFSET 0x144000
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#define SST_BYT_TIMESTAMP_OFFSET (SST_BYT_MAILBOX_OFFSET + 0x800)
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/**
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* Upfront defined maximum message size that is
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* expected by the in/out communication pipes in FW.
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*/
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#define SST_BYT_IPC_MAX_PAYLOAD_SIZE 200
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/* stream API */
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struct sst_byt_stream *sst_byt_stream_new(struct sst_byt *byt, int id,
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uint32_t (*get_write_position)(struct sst_byt_stream *stream,
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void *data),
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void *data);
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/* stream configuration */
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int sst_byt_stream_set_bits(struct sst_byt *byt, struct sst_byt_stream *stream,
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int bits);
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int sst_byt_stream_set_channels(struct sst_byt *byt,
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struct sst_byt_stream *stream, u8 channels);
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int sst_byt_stream_set_rate(struct sst_byt *byt, struct sst_byt_stream *stream,
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unsigned int rate);
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int sst_byt_stream_type(struct sst_byt *byt, struct sst_byt_stream *stream,
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int codec_type, int stream_type, int operation);
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int sst_byt_stream_buffer(struct sst_byt *byt, struct sst_byt_stream *stream,
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uint32_t buffer_addr, uint32_t buffer_size);
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int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream);
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int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream);
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/* stream ALSA trigger operations */
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int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream,
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u32 start_offset);
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int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream);
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int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream);
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int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream);
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int sst_byt_get_dsp_position(struct sst_byt *byt,
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struct sst_byt_stream *stream, int buffer_size);
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/* init */
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int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata);
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void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata);
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struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt);
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int sst_byt_dsp_suspend_noirq(struct device *dev, struct sst_pdata *pdata);
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int sst_byt_dsp_suspend_late(struct device *dev, struct sst_pdata *pdata);
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int sst_byt_dsp_boot(struct device *dev, struct sst_pdata *pdata);
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int sst_byt_dsp_wait_for_ready(struct device *dev, struct sst_pdata *pdata);
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#endif
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