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29a269c6f5
Now that the auxiliary_bus exists, there's no reason to use platform devices as children of a PCI device any longer. This patch refactors the code by extending a basic auxiliary device with Intel link-specific structures that need to be passed between controller and link levels. This refactoring is much cleaner with no need for cross-pointers between device and link structures. Note that the auxiliary bus API has separate init and add steps, which requires more attention in the error unwinding paths. The main loop needs to deal with kfree() and auxiliary_device_uninit() for the current iteration before jumping to the common label which releases everything allocated in prior iterations. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210511052132.28150-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
60 lines
1.8 KiB
C
60 lines
1.8 KiB
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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* @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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* @shim_lock: mutex to handle access to shared SHIM registers
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* @shim_mask: global pointer to check SHIM register initialization
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* @clock_stop_quirks: mask defining requested behavior on pm_suspend
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* @link_mask: global mask needed for power-up/down sequences
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* @cdns: Cadence master descriptor
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* @list: used to walk-through all masters exposed by the same controller
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*/
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struct sdw_intel_link_res {
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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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struct mutex *shim_lock; /* protect shared registers */
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u32 *shim_mask;
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u32 clock_stop_quirks;
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u32 link_mask;
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struct sdw_cdns *cdns;
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struct list_head list;
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};
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struct sdw_intel {
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struct sdw_cdns cdns;
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int instance;
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struct sdw_intel_link_res *link_res;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs;
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#endif
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};
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int intel_link_startup(struct auxiliary_device *auxdev);
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int intel_link_process_wakeen_event(struct auxiliary_device *auxdev);
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struct sdw_intel_link_dev {
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struct auxiliary_device auxdev;
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struct sdw_intel_link_res link_res;
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};
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#define auxiliary_dev_to_sdw_intel_link_dev(auxiliary_dev) \
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container_of(auxiliary_dev, struct sdw_intel_link_dev, auxdev)
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#endif /* __SDW_INTEL_LOCAL_H */
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