xref: /OK3568_Linux_fs/kernel/drivers/gpu/arm/bifrost/protected_mode_switcher.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  *
4*4882a593Smuzhiyun  * (C) COPYRIGHT 2017, 2020-2021 ARM Limited. All rights reserved.
5*4882a593Smuzhiyun  *
6*4882a593Smuzhiyun  * This program is free software and is provided to you under the terms of the
7*4882a593Smuzhiyun  * GNU General Public License version 2 as published by the Free Software
8*4882a593Smuzhiyun  * Foundation, and any use by you of this program is subject to the terms
9*4882a593Smuzhiyun  * of such GNU license.
10*4882a593Smuzhiyun  *
11*4882a593Smuzhiyun  * This program is distributed in the hope that it will be useful,
12*4882a593Smuzhiyun  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13*4882a593Smuzhiyun  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14*4882a593Smuzhiyun  * GNU General Public License for more details.
15*4882a593Smuzhiyun  *
16*4882a593Smuzhiyun  * You should have received a copy of the GNU General Public License
17*4882a593Smuzhiyun  * along with this program; if not, you can access it online at
18*4882a593Smuzhiyun  * http://www.gnu.org/licenses/gpl-2.0.html.
19*4882a593Smuzhiyun  *
20*4882a593Smuzhiyun  */
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun #ifndef _PROTECTED_MODE_SWITCH_H_
23*4882a593Smuzhiyun #define _PROTECTED_MODE_SWITCH_H_
24*4882a593Smuzhiyun 
25*4882a593Smuzhiyun struct protected_mode_device;
26*4882a593Smuzhiyun 
27*4882a593Smuzhiyun /**
28*4882a593Smuzhiyun  * struct protected_mode_ops - Callbacks for protected mode switch operations
29*4882a593Smuzhiyun  *
30*4882a593Smuzhiyun  * @protected_mode_enable:  Callback to enable protected mode for device, and
31*4882a593Smuzhiyun  *                          reset device
32*4882a593Smuzhiyun  *                          Returns 0 on success, non-zero on error
33*4882a593Smuzhiyun  * @protected_mode_disable: Callback to disable protected mode for device
34*4882a593Smuzhiyun  *                          Returns 0 on success, non-zero on error
35*4882a593Smuzhiyun  */
36*4882a593Smuzhiyun struct protected_mode_ops {
37*4882a593Smuzhiyun 	int (*protected_mode_enable)(
38*4882a593Smuzhiyun 			struct protected_mode_device *protected_dev);
39*4882a593Smuzhiyun 	int (*protected_mode_disable)(
40*4882a593Smuzhiyun 			struct protected_mode_device *protected_dev);
41*4882a593Smuzhiyun };
42*4882a593Smuzhiyun 
43*4882a593Smuzhiyun /**
44*4882a593Smuzhiyun  * struct protected_mode_device - Device structure for protected mode devices
45*4882a593Smuzhiyun  * @ops:  Callbacks associated with this device
46*4882a593Smuzhiyun  * @data: Pointer to device private data
47*4882a593Smuzhiyun  *
48*4882a593Smuzhiyun  * This structure should be registered with the platform device using
49*4882a593Smuzhiyun  * platform_set_drvdata().
50*4882a593Smuzhiyun  */
51*4882a593Smuzhiyun struct protected_mode_device {
52*4882a593Smuzhiyun 	struct protected_mode_ops ops;
53*4882a593Smuzhiyun 	void *data;
54*4882a593Smuzhiyun };
55*4882a593Smuzhiyun 
56*4882a593Smuzhiyun #endif /* _PROTECTED_MODE_SWITCH_H_ */
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