1 //<MStar Software>
2 //******************************************************************************
3 // MStar Software
4 // Copyright (c) 2010 - 2012 MStar Semiconductor, Inc. All rights reserved.
5 // All software, firmware and related documentation herein ("MStar Software") are
6 // intellectual property of MStar Semiconductor, Inc. ("MStar") and protected by
7 // law, including, but not limited to, copyright law and international treaties.
8 // Any use, modification, reproduction, retransmission, or republication of all
9 // or part of MStar Software is expressly prohibited, unless prior written
10 // permission has been granted by MStar.
11 //
12 // By accessing, browsing and/or using MStar Software, you acknowledge that you
13 // have read, understood, and agree, to be bound by below terms ("Terms") and to
14 // comply with all applicable laws and regulations:
15 //
16 // 1. MStar shall retain any and all right, ownership and interest to MStar
17 // Software and any modification/derivatives thereof.
18 // No right, ownership, or interest to MStar Software and any
19 // modification/derivatives thereof is transferred to you under Terms.
20 //
21 // 2. You understand that MStar Software might include, incorporate or be
22 // supplied together with third party`s software and the use of MStar
23 // Software may require additional licenses from third parties.
24 // Therefore, you hereby agree it is your sole responsibility to separately
25 // obtain any and all third party right and license necessary for your use of
26 // such third party`s software.
27 //
28 // 3. MStar Software and any modification/derivatives thereof shall be deemed as
29 // MStar`s confidential information and you agree to keep MStar`s
30 // confidential information in strictest confidence and not disclose to any
31 // third party.
32 //
33 // 4. MStar Software is provided on an "AS IS" basis without warranties of any
34 // kind. Any warranties are hereby expressly disclaimed by MStar, including
35 // without limitation, any warranties of merchantability, non-infringement of
36 // intellectual property rights, fitness for a particular purpose, error free
37 // and in conformity with any international standard. You agree to waive any
38 // claim against MStar for any loss, damage, cost or expense that you may
39 // incur related to your use of MStar Software.
40 // In no event shall MStar be liable for any direct, indirect, incidental or
41 // consequential damages, including without limitation, lost of profit or
42 // revenues, lost or damage of data, and unauthorized system use.
43 // You agree that this Section 4 shall still apply without being affected
44 // even if MStar Software has been modified by MStar in accordance with your
45 // request or instruction for your use, except otherwise agreed by both
46 // parties in writing.
47 //
48 // 5. If requested, MStar may from time to time provide technical supports or
49 // services in relation with MStar Software to you for your use of
50 // MStar Software in conjunction with your or your customer`s product
51 // ("Services").
52 // You understand and agree that, except otherwise agreed by both parties in
53 // writing, Services are provided on an "AS IS" basis and the warranty
54 // disclaimer set forth in Section 4 above shall apply.
55 //
56 // 6. Nothing contained herein shall be construed as by implication, estoppels
57 // or otherwise:
58 // (a) conferring any license or right to use MStar name, trademark, service
59 // mark, symbol or any other identification;
60 // (b) obligating MStar or any of its affiliates to furnish any person,
61 // including without limitation, you and your customers, any assistance
62 // of any kind whatsoever, or any information; or
63 // (c) conferring any license or right under any intellectual property right.
64 //
65 // 7. These terms shall be governed by and construed in accordance with the laws
66 // of Taiwan, R.O.C., excluding its conflict of law rules.
67 // Any and all dispute arising out hereof or related hereto shall be finally
68 // settled by arbitration referred to the Chinese Arbitration Association,
69 // Taipei in accordance with the ROC Arbitration Law and the Arbitration
70 // Rules of the Association by three (3) arbitrators appointed in accordance
71 // with the said Rules.
72 // The place of arbitration shall be in Taipei, Taiwan and the language shall
73 // be English.
74 // The arbitration award shall be final and binding to both parties.
75 //
76 //******************************************************************************
77 //<MStar Software>
78
79 #undef DEBUG
80
81 #include <MsCommon.h>
82 #include "include/drvCompiler.h"
83 #include "include/drvConfig.h"
84 #include "include/drvDevice.h"
85 #include "include/drvKernel.h"
86 #include "include/drvList.h"
87 #include "drvBase.h"
88
device_initialize(struct device_s * dev)89 void device_initialize(struct device_s *dev)
90 {
91 INIT_LIST_HEAD(&dev->node);
92 INIT_LIST_HEAD(&dev->children);
93 INIT_LIST_HEAD(&dev->driver_list);
94 INIT_LIST_HEAD(&dev->bus_list);
95 atomic_set(&dev->refcount,1);
96 }
97
device_add(struct device_s * dev)98 int device_add(struct device_s *dev)
99 {
100 struct device_s * parent;
101
102 if (!dev || !strlen(dev->bus_id))
103 return -EINVAL;
104
105 parent = dev->parent;
106
107 pr_debug("DEV: registering device: ID = '%s', name = %s\n",
108 dev->bus_id, dev->name);
109
110 if (parent)
111 list_add_tail(&dev->node,&parent->children);
112
113
114 bus_add_device(dev);
115
116 return ENOERR;
117 }
118
119
device_del(struct device_s * dev)120 void device_del(struct device_s * dev)
121 {
122 struct device_s * parent = dev->parent;
123
124 if (parent)
125 list_del_init(&dev->node);
126
127 bus_remove_device(dev);
128
129 }
130
device_unregister(struct device_s * dev)131 void device_unregister(struct device_s * dev)
132 {
133 pr_debug("DEV: Unregistering device. ID = '%s', name = '%s'\n",
134 dev->bus_id,dev->name);
135 device_del(dev);
136 //calling device registed release function to releaes all device's allocated resouces
137 if(dev->release)
138 dev->release(dev);
139 }
140
141