drivers/soundwire/intel.h

   1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
   2 /* Copyright(c) 2015-17 Intel Corporation. */
   3
   4 #ifndef __SDW_INTEL_LOCAL_H
   5 #define __SDW_INTEL_LOCAL_H
   6
   7 /**
   8  * struct sdw_intel_link_res - Soundwire Intel link resource structure,
   9  * typically populated by the controller driver.
  10  * @pdev: platform_device
  11  * @mmio_base: mmio base of SoundWire registers
  12  * @registers: Link IO registers base
  13  * @shim: Audio shim pointer
  14  * @alh: ALH (Audio Link Hub) pointer
  15  * @irq: Interrupt line
  16  * @ops: Shim callback ops
  17  * @dev: device implementing hw_params and free callbacks
  18  * @shim_lock: mutex to handle access to shared SHIM registers
  19  * @shim_mask: global pointer to check SHIM register initialization
  20  * @clock_stop_quirks: mask defining requested behavior on pm_suspend
  21  * @link_mask: global mask needed for power-up/down sequences
  22  * @cdns: Cadence master descriptor
  23  * @list: used to walk-through all masters exposed by the same controller
  24  */
  25 struct sdw_intel_link_res {
  26         struct platform_device *pdev;
  27         void __iomem *mmio_base; /* not strictly needed, useful for debug */
  28         void __iomem *registers;
  29         void __iomem *shim;
  30         void __iomem *alh;
  31         int irq;
  32         const struct sdw_intel_ops *ops;
  33         struct device *dev;
  34         struct mutex *shim_lock; /* protect shared registers */
  35         u32 *shim_mask;
  36         u32 clock_stop_quirks;
  37         u32 link_mask;
  38         struct sdw_cdns *cdns;
  39         struct list_head list;
  40 };
  41
  42 struct sdw_intel {
  43         struct sdw_cdns cdns;
  44         int instance;
  45         struct sdw_intel_link_res *link_res;
  46 #ifdef CONFIG_DEBUG_FS
  47         struct dentry *debugfs;
  48 #endif
  49 };
  50
  51 #define SDW_INTEL_QUIRK_MASK_BUS_DISABLE      BIT(1)
  52
  53 int intel_master_startup(struct platform_device *pdev);
  54 int intel_master_process_wakeen_event(struct platform_device *pdev);
  55
  56 #endif /* __SDW_INTEL_LOCAL_H */