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The SoundWire DAIs for Intel platform are created in drivers/soundwire/intel.c, while the communication with the Intel DSP is all controlled in soc/sof/intel When the DAI status changes, a callback is used to bridge the gap between the two subsystems. The naming of the existing 'config_stream' callback does not map well with any of ALSA/ASoC concepts. This patch renames it as 'params_stream' to be more self-explanatory. A new 'free_stream' callback is added in case any resources allocated in the 'params_stream' stage need to be released. In the SOF implementation, this is used in the hw_free case to release the DMA channels over IPC. These two callbacks now rely on structures which expose the link_id and alh_stream_id (required by the firmware IPC), instead of a list of parameters. The 'void *' definitions are changed to use explicit types, as suggested on alsa-devel during earlier reviews. Signed-off-by: Rander Wang <rander.wang@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
30 lines
876 B
C
30 lines
876 B
C
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
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/* Copyright(c) 2015-17 Intel Corporation. */
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#ifndef __SDW_INTEL_LOCAL_H
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#define __SDW_INTEL_LOCAL_H
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/**
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* struct sdw_intel_link_res - Soundwire Intel link resource structure,
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* typically populated by the controller driver.
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* @pdev: platform_device
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* @mmio_base: mmio base of SoundWire registers
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* @registers: Link IO registers base
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* @shim: Audio shim pointer
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* @alh: ALH (Audio Link Hub) pointer
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* @irq: Interrupt line
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* @ops: Shim callback ops
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* @dev: device implementing hw_params and free callbacks
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*/
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struct sdw_intel_link_res {
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struct platform_device *pdev;
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void __iomem *mmio_base; /* not strictly needed, useful for debug */
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void __iomem *registers;
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void __iomem *shim;
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void __iomem *alh;
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int irq;
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const struct sdw_intel_ops *ops;
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struct device *dev;
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};
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#endif /* __SDW_INTEL_LOCAL_H */
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