Merge remote-tracking branches 'asoc/fix/adsp', 'asoc/fix/amd', 'asoc/fix/atmel'...
[linux-2.6-microblaze.git] / drivers / staging / media / atomisp / pci / atomisp2 / css2400 / runtime / isys / src / isys_stream2mmio_rmgr.c
1 #ifndef ISP2401
2 /*
3  * Support for Intel Camera Imaging ISP subsystem.
4  * Copyright (c) 2015, Intel Corporation.
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms and conditions of the GNU General Public License,
8  * version 2, as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13  * more details.
14  */
15 #else
16 /*
17 Support for Intel Camera Imaging ISP subsystem.
18 Copyright (c) 2010 - 2015, Intel Corporation.
19
20 This program is free software; you can redistribute it and/or modify it
21 under the terms and conditions of the GNU General Public License,
22 version 2, as published by the Free Software Foundation.
23
24 This program is distributed in the hope it will be useful, but WITHOUT
25 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
26 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
27 more details.
28 */
29 #endif
30
31 #include "system_global.h"
32
33 #ifdef USE_INPUT_SYSTEM_VERSION_2401
34
35 #include "assert_support.h"
36 #include "platform_support.h"
37 #include "ia_css_isys.h"
38 #include "bitop_support.h"
39 #include "isys_stream2mmio_rmgr.h"
40
41 static isys_stream2mmio_rsrc_t  isys_stream2mmio_rsrc[N_STREAM2MMIO_ID];
42
43 void ia_css_isys_stream2mmio_sid_rmgr_init(void)
44 {
45         memset(isys_stream2mmio_rsrc, 0, sizeof(isys_stream2mmio_rsrc));
46 }
47
48 void ia_css_isys_stream2mmio_sid_rmgr_uninit(void)
49 {
50         memset(isys_stream2mmio_rsrc, 0, sizeof(isys_stream2mmio_rsrc));
51 }
52
53 bool ia_css_isys_stream2mmio_sid_rmgr_acquire(
54         stream2mmio_ID_t        stream2mmio,
55         stream2mmio_sid_ID_t    *sid)
56 {
57         bool retval = false;
58         stream2mmio_sid_ID_t max_sid;
59         isys_stream2mmio_rsrc_t *cur_rsrc = NULL;
60         stream2mmio_sid_ID_t    i;
61
62         assert(stream2mmio < N_STREAM2MMIO_ID);
63         assert(sid != NULL);
64
65         if ((stream2mmio < N_STREAM2MMIO_ID) && (sid != NULL)) {
66                 max_sid = N_STREAM2MMIO_SID_PROCS[stream2mmio];
67                 cur_rsrc = &isys_stream2mmio_rsrc[stream2mmio];
68
69                 if (cur_rsrc->num_active < max_sid) {
70                         for (i = STREAM2MMIO_SID0_ID; i < max_sid; i++) {
71                                 if (bitop_getbit(cur_rsrc->active_table, i) == 0) {
72                                         bitop_setbit(cur_rsrc->active_table, i);
73                                         *sid = i;
74                                         cur_rsrc->num_active++;
75                                         retval = true;
76                                         break;
77                                 }
78                         }
79                 }
80         }
81         return retval;
82 }
83
84 void ia_css_isys_stream2mmio_sid_rmgr_release(
85         stream2mmio_ID_t        stream2mmio,
86         stream2mmio_sid_ID_t    *sid)
87 {
88         stream2mmio_sid_ID_t max_sid;
89         isys_stream2mmio_rsrc_t *cur_rsrc = NULL;
90
91         assert(stream2mmio < N_STREAM2MMIO_ID);
92         assert(sid != NULL);
93
94         if ((stream2mmio < N_STREAM2MMIO_ID) && (sid != NULL)) {
95                 max_sid = N_STREAM2MMIO_SID_PROCS[stream2mmio];
96                 cur_rsrc = &isys_stream2mmio_rsrc[stream2mmio];
97                 if ((*sid < max_sid) && (cur_rsrc->num_active > 0)) {
98                         if (bitop_getbit(cur_rsrc->active_table, *sid) == 1) {
99                                 bitop_clearbit(cur_rsrc->active_table, *sid);
100                                 cur_rsrc->num_active--;
101                         }
102                 }
103         }
104 }
105 #endif