]> Pileus Git - ~andy/linux/blob - drivers/media/platform/s5p-mfc/s5p_mfc_opr.c
Merge tag 'asoc-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
[~andy/linux] / drivers / media / platform / s5p-mfc / s5p_mfc_opr.c
1 /*
2  * drivers/media/platform/s5p-mfc/s5p_mfc_opr.c
3  *
4  * Samsung MFC (Multi Function Codec - FIMV) driver
5  * This file contains hw related functions.
6  *
7  * Kamil Debski, Copyright (c) 2012 Samsung Electronics Co., Ltd.
8  * http://www.samsung.com/
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  */
14
15 #include "s5p_mfc_debug.h"
16 #include "s5p_mfc_opr.h"
17 #include "s5p_mfc_opr_v5.h"
18 #include "s5p_mfc_opr_v6.h"
19
20 static struct s5p_mfc_hw_ops *s5p_mfc_ops;
21
22 void s5p_mfc_init_hw_ops(struct s5p_mfc_dev *dev)
23 {
24         if (IS_MFCV6(dev)) {
25                 s5p_mfc_ops = s5p_mfc_init_hw_ops_v6();
26                 dev->warn_start = S5P_FIMV_ERR_WARNINGS_START_V6;
27         } else {
28                 s5p_mfc_ops = s5p_mfc_init_hw_ops_v5();
29                 dev->warn_start = S5P_FIMV_ERR_WARNINGS_START;
30         }
31         dev->mfc_ops = s5p_mfc_ops;
32 }
33
34 int s5p_mfc_alloc_priv_buf(struct device *dev,
35                                         struct s5p_mfc_priv_buf *b)
36 {
37
38         mfc_debug(3, "Allocating priv: %d\n", b->size);
39
40         b->virt = dma_alloc_coherent(dev, b->size, &b->dma, GFP_KERNEL);
41
42         if (!b->virt) {
43                 mfc_err("Allocating private buffer failed\n");
44                 return -ENOMEM;
45         }
46
47         mfc_debug(3, "Allocated addr %p %08x\n", b->virt, b->dma);
48         return 0;
49 }
50
51 void s5p_mfc_release_priv_buf(struct device *dev,
52                                                 struct s5p_mfc_priv_buf *b)
53 {
54         if (b->virt) {
55                 dma_free_coherent(dev, b->size, b->virt, b->dma);
56                 b->virt = NULL;
57                 b->dma = 0;
58                 b->size = 0;
59         }
60 }
61