drivers/soundwire/cadence_master.h

   1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
   2 // Copyright(c) 2015-17 Intel Corporation.
   3
   4 #ifndef __SDW_CADENCE_H
   5 #define __SDW_CADENCE_H
   6
   7 /**
   8  * struct sdw_cdns - Cadence driver context
   9  * @dev: Linux device
  10  * @bus: Bus handle
  11  * @instance: instance number
  12  * @response_buf: SoundWire response buffer
  13  * @tx_complete: Tx completion
  14  * @defer: Defer pointer
  15  * @registers: Cadence registers
  16  * @link_up: Link status
  17  * @msg_count: Messages sent on bus
  18  */
  19 struct sdw_cdns {
  20         struct device *dev;
  21         struct sdw_bus bus;
  22         unsigned int instance;
  23
  24         u32 response_buf[0x80];
  25         struct completion tx_complete;
  26         struct sdw_defer *defer;
  27
  28         void __iomem *registers;
  29
  30         bool link_up;
  31         unsigned int msg_count;
  32 };
  33
  34 #define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus)
  35
  36 /* Exported symbols */
  37
  38 int sdw_cdns_probe(struct sdw_cdns *cdns);
  39 extern struct sdw_master_ops sdw_cdns_master_ops;
  40
  41 irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
  42 irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
  43
  44 int sdw_cdns_init(struct sdw_cdns *cdns);
  45 int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
  46
  47
  48 #endif /* __SDW_CADENCE_H */