xref: /linux/drivers/gpu/drm/radeon/radeon_pm.c (revision dfc349402de8e95f6a42e8341e9ea193b718eee3)
1 /*
2  * Permission is hereby granted, free of charge, to any person obtaining a
3  * copy of this software and associated documentation files (the "Software"),
4  * to deal in the Software without restriction, including without limitation
5  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
6  * and/or sell copies of the Software, and to permit persons to whom the
7  * Software is furnished to do so, subject to the following conditions:
8  *
9  * The above copyright notice and this permission notice shall be included in
10  * all copies or substantial portions of the Software.
11  *
12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
15  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
16  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
17  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
18  * OTHER DEALINGS IN THE SOFTWARE.
19  *
20  * Authors: Rafał Miłecki <zajec5@gmail.com>
21  */
22 #include "drmP.h"
23 #include "radeon.h"
24 
25 int radeon_debugfs_pm_init(struct radeon_device *rdev);
26 
27 int radeon_pm_init(struct radeon_device *rdev)
28 {
29 	if (radeon_debugfs_pm_init(rdev)) {
30 		DRM_ERROR("Failed to register debugfs file for CP !\n");
31 	}
32 
33 	return 0;
34 }
35 
36 /*
37  * Debugfs info
38  */
39 #if defined(CONFIG_DEBUG_FS)
40 
41 static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
42 {
43 	struct drm_info_node *node = (struct drm_info_node *) m->private;
44 	struct drm_device *dev = node->minor->dev;
45 	struct radeon_device *rdev = dev->dev_private;
46 
47 	seq_printf(m, "engine clock: %u0 Hz\n", radeon_get_engine_clock(rdev));
48 	seq_printf(m, "memory clock: %u0 Hz\n", radeon_get_memory_clock(rdev));
49 
50 	return 0;
51 }
52 
53 static struct drm_info_list radeon_pm_info_list[] = {
54 	{"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
55 };
56 #endif
57 
58 int radeon_debugfs_pm_init(struct radeon_device *rdev)
59 {
60 #if defined(CONFIG_DEBUG_FS)
61 	return radeon_debugfs_add_files(rdev, radeon_pm_info_list, ARRAY_SIZE(radeon_pm_info_list));
62 #else
63 	return 0;
64 #endif
65 }
66