1 /* Copyright (c) 2013-2014, 2016, The Linux Foundation. All rights reserved.
2  *
3  * Redistribution and use in source and binary forms, with or without
4  * modification, are permitted provided that the following conditions are
5  * met:
6  *     * Redistributions of source code must retain the above copyright
7  *       notice, this list of conditions and the following disclaimer.
8  *     * Redistributions in binary form must reproduce the above
9  *       copyright notice, this list of conditions and the following
10  *       disclaimer in the documentation and/or other materials provided
11  *       with the distribution.
12  *     * Neither the name of The Linux Foundation nor the names of its
13  *       contributors may be used to endorse or promote products derived
14  *       from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  */
29 
30 #ifndef __MM_JPEG_IONBUF_H__
31 #define __MM_JPEG_IONBUF_H__
32 
33 // System dependencies
34 #include <linux/msm_ion.h>
35 
36 // JPEG dependencies
37 #include "mm_jpeg_dbg.h"
38 
39 typedef struct  {
40   struct ion_fd_data ion_info_fd;
41   struct ion_allocation_data alloc;
42   int p_pmem_fd;
43   size_t size;
44   int ion_fd;
45   uint8_t *addr;
46 } buffer_t;
47 
48 /** buffer_allocate:
49  *
50  *  Arguments:
51  *     @p_buffer: ION buffer
52  *
53  *  Return:
54  *     buffer address
55  *
56  *  Description:
57  *      allocates ION buffer
58  *
59  **/
60 void* buffer_allocate(buffer_t *p_buffer, int cached);
61 
62 /** buffer_deallocate:
63  *
64  *  Arguments:
65  *     @p_buffer: ION buffer
66  *
67  *  Return:
68  *     error val
69  *
70  *  Description:
71  *      deallocates ION buffer
72  *
73  **/
74 int buffer_deallocate(buffer_t *p_buffer);
75 
76 /** buffer_invalidate:
77  *
78  *  Arguments:
79  *     @p_buffer: ION buffer
80  *
81  *  Return:
82  *     error val
83  *
84  *  Description:
85  *      Invalidates the cached buffer
86  *
87  **/
88 int buffer_invalidate(buffer_t *p_buffer);
89 
90 /** buffer_clean:
91  *
92  *  Arguments:
93  *     @p_buffer: ION buffer
94  *
95  *  Return:
96  *     error val
97  *
98  *  Description:
99  *      clean the cached buffer
100  *
101  **/
102 int buffer_clean(buffer_t *p_buffer);
103 
104 #endif
105 
106