drivers/staging/media/atomisp/pci/atomisp2/css2400/hive_isp_css_common/host/event_fifo_private.h

   1 /*
   2  * Support for Intel Camera Imaging ISP subsystem.
   3  * Copyright (c) 2015, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #ifndef __EVENT_FIFO_PRIVATE_H
  16 #define __EVENT_FIFO_PRIVATE_H
  17
  18 #include "event_fifo_public.h"
  19
  20 #include "device_access.h"
  21
  22 #include "assert_support.h"
  23
  24 #include <hrt/bits.h>                   /* _hrt_get_bits() */
  25
  26 STORAGE_CLASS_EVENT_C void event_wait_for(const event_ID_t ID)
  27 {
  28         assert(ID < N_EVENT_ID);
  29         assert(event_source_addr[ID] != ((hrt_address)-1));
  30         (void)ia_css_device_load_uint32(event_source_addr[ID]);
  31 return;
  32 }
  33
  34 STORAGE_CLASS_EVENT_C void cnd_event_wait_for(const event_ID_t ID,
  35                                                 const bool cnd)
  36 {
  37         if (cnd) {
  38                 event_wait_for(ID);
  39         }
  40 }
  41
  42 STORAGE_CLASS_EVENT_C hrt_data event_receive_token(const event_ID_t ID)
  43 {
  44         assert(ID < N_EVENT_ID);
  45         assert(event_source_addr[ID] != ((hrt_address)-1));
  46         return ia_css_device_load_uint32(event_source_addr[ID]);
  47 }
  48
  49 STORAGE_CLASS_EVENT_C void event_send_token(const event_ID_t ID,
  50                                             const hrt_data token)
  51 {
  52         assert(ID < N_EVENT_ID);
  53         assert(event_sink_addr[ID] != ((hrt_address)-1));
  54         ia_css_device_store_uint32(event_sink_addr[ID], token);
  55 }
  56
  57 STORAGE_CLASS_EVENT_C bool is_event_pending(const event_ID_t ID)
  58 {
  59         hrt_data        value;
  60         assert(ID < N_EVENT_ID);
  61         assert(event_source_query_addr[ID] != ((hrt_address)-1));
  62         value = ia_css_device_load_uint32(event_source_query_addr[ID]);
  63         return !_hrt_get_bit(value, EVENT_QUERY_BIT);
  64 }
  65
  66 STORAGE_CLASS_EVENT_C bool can_event_send_token(const event_ID_t ID)
  67 {
  68         hrt_data        value;
  69         assert(ID < N_EVENT_ID);
  70         assert(event_sink_query_addr[ID] != ((hrt_address)-1));
  71         value = ia_css_device_load_uint32(event_sink_query_addr[ID]);
  72         return !_hrt_get_bit(value, EVENT_QUERY_BIT);
  73 }
  74
  75 #endif /* __EVENT_FIFO_PRIVATE_H */