sound/soc/intel/common/sst-dsp.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Intel Smart Sound Technology (SST) Core
   4  *
   5  * Copyright (C) 2013, Intel Corporation. All rights reserved.
   6  */
   7
   8 #ifndef __SOUND_SOC_SST_DSP_H
   9 #define __SOUND_SOC_SST_DSP_H
  10
  11 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/interrupt.h>
  14
  15 struct sst_dsp;
  16
  17 /*
  18  * SST Device.
  19  *
  20  * This structure is populated by the SST core driver.
  21  */
  22 struct sst_dsp_device {
  23         /* Mandatory fields */
  24         struct sst_ops *ops;
  25         irqreturn_t (*thread)(int irq, void *context);
  26         void *thread_context;
  27 };
  28
  29 /* SHIM Read / Write */
  30 void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value);
  31 u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset);
  32 int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset,
  33                                 u32 mask, u32 value);
  34 void sst_dsp_shim_update_bits_forced(struct sst_dsp *sst, u32 offset,
  35                                 u32 mask, u32 value);
  36
  37 /* SHIM Read / Write Unlocked for callers already holding sst lock */
  38 void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value);
  39 u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset);
  40 int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset,
  41                                 u32 mask, u32 value);
  42 void sst_dsp_shim_update_bits_forced_unlocked(struct sst_dsp *sst, u32 offset,
  43                                 u32 mask, u32 value);
  44
  45 /* Internal generic low-level SST IO functions - can be overidden */
  46 void sst_shim32_write(void __iomem *addr, u32 offset, u32 value);
  47 u32 sst_shim32_read(void __iomem *addr, u32 offset);
  48 void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value);
  49 u64 sst_shim32_read64(void __iomem *addr, u32 offset);
  50
  51 /* Mailbox management */
  52 int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset,
  53         size_t inbox_size, u32 outbox_offset, size_t outbox_size);
  54 void sst_dsp_inbox_write(struct sst_dsp *sst, void *message, size_t bytes);
  55 void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes);
  56 void sst_dsp_outbox_write(struct sst_dsp *sst, void *message, size_t bytes);
  57 void sst_dsp_outbox_read(struct sst_dsp *sst, void *message, size_t bytes);
  58 int sst_dsp_register_poll(struct sst_dsp  *ctx, u32 offset, u32 mask,
  59                  u32 target, u32 time, char *operation);
  60
  61 #endif