]> git.kernelconcepts.de Git - karo-tx-linux.git/blob - drivers/gpu/drm/amd/amdgpu/iceland_dpm.c
Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block
[karo-tx-linux.git] / drivers / gpu / drm / amd / amdgpu / iceland_dpm.c
1 /*
2  * Copyright 2014 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23
24 #include <linux/firmware.h>
25 #include "drmP.h"
26 #include "amdgpu.h"
27 #include "iceland_smumgr.h"
28
29 MODULE_FIRMWARE("amdgpu/topaz_smc.bin");
30
31 static void iceland_dpm_set_funcs(struct amdgpu_device *adev);
32
33 static int iceland_dpm_early_init(void *handle)
34 {
35         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
36
37         iceland_dpm_set_funcs(adev);
38
39         return 0;
40 }
41
42 static int iceland_dpm_init_microcode(struct amdgpu_device *adev)
43 {
44         char fw_name[30] = "amdgpu/topaz_smc.bin";
45         int err;
46
47         err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
48         if (err)
49                 goto out;
50         err = amdgpu_ucode_validate(adev->pm.fw);
51
52 out:
53         if (err) {
54                 DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
55                 release_firmware(adev->pm.fw);
56                 adev->pm.fw = NULL;
57         }
58         return err;
59 }
60
61 static int iceland_dpm_sw_init(void *handle)
62 {
63         int ret;
64         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
65
66         ret = iceland_dpm_init_microcode(adev);
67         if (ret)
68                 return ret;
69
70         return 0;
71 }
72
73 static int iceland_dpm_sw_fini(void *handle)
74 {
75         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
76
77         release_firmware(adev->pm.fw);
78         adev->pm.fw = NULL;
79
80         return 0;
81 }
82
83 static int iceland_dpm_hw_init(void *handle)
84 {
85         int ret;
86         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
87
88         mutex_lock(&adev->pm.mutex);
89
90         /* smu init only needs to be called at startup, not resume.
91          * It should be in sw_init, but requires the fw info gathered
92          * in sw_init from other IP modules.
93          */
94         ret = iceland_smu_init(adev);
95         if (ret) {
96                 DRM_ERROR("SMU initialization failed\n");
97                 goto fail;
98         }
99
100         ret = iceland_smu_start(adev);
101         if (ret) {
102                 DRM_ERROR("SMU start failed\n");
103                 goto fail;
104         }
105
106         mutex_unlock(&adev->pm.mutex);
107         return 0;
108
109 fail:
110         adev->firmware.smu_load = false;
111         mutex_unlock(&adev->pm.mutex);
112         return -EINVAL;
113 }
114
115 static int iceland_dpm_hw_fini(void *handle)
116 {
117         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
118
119         mutex_lock(&adev->pm.mutex);
120         /* smu fini only needs to be called at teardown, not suspend.
121          * It should be in sw_fini, but we put it here for symmetry
122          * with smu init.
123          */
124         iceland_smu_fini(adev);
125         mutex_unlock(&adev->pm.mutex);
126         return 0;
127 }
128
129 static int iceland_dpm_suspend(void *handle)
130 {
131         return 0;
132 }
133
134 static int iceland_dpm_resume(void *handle)
135 {
136         int ret;
137         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
138
139         mutex_lock(&adev->pm.mutex);
140
141         ret = iceland_smu_start(adev);
142         if (ret) {
143                 DRM_ERROR("SMU start failed\n");
144                 goto fail;
145         }
146
147 fail:
148         mutex_unlock(&adev->pm.mutex);
149         return ret;
150 }
151
152 static int iceland_dpm_set_clockgating_state(void *handle,
153                         enum amd_clockgating_state state)
154 {
155         return 0;
156 }
157
158 static int iceland_dpm_set_powergating_state(void *handle,
159                         enum amd_powergating_state state)
160 {
161         return 0;
162 }
163
164 const struct amd_ip_funcs iceland_dpm_ip_funcs = {
165         .name = "iceland_dpm",
166         .early_init = iceland_dpm_early_init,
167         .late_init = NULL,
168         .sw_init = iceland_dpm_sw_init,
169         .sw_fini = iceland_dpm_sw_fini,
170         .hw_init = iceland_dpm_hw_init,
171         .hw_fini = iceland_dpm_hw_fini,
172         .suspend = iceland_dpm_suspend,
173         .resume = iceland_dpm_resume,
174         .is_idle = NULL,
175         .wait_for_idle = NULL,
176         .soft_reset = NULL,
177         .set_clockgating_state = iceland_dpm_set_clockgating_state,
178         .set_powergating_state = iceland_dpm_set_powergating_state,
179 };
180
181 static const struct amdgpu_dpm_funcs iceland_dpm_funcs = {
182         .get_temperature = NULL,
183         .pre_set_power_state = NULL,
184         .set_power_state = NULL,
185         .post_set_power_state = NULL,
186         .display_configuration_changed = NULL,
187         .get_sclk = NULL,
188         .get_mclk = NULL,
189         .print_power_state = NULL,
190         .debugfs_print_current_performance_level = NULL,
191         .force_performance_level = NULL,
192         .vblank_too_short = NULL,
193         .powergate_uvd = NULL,
194 };
195
196 static void iceland_dpm_set_funcs(struct amdgpu_device *adev)
197 {
198         if (NULL == adev->pm.funcs)
199                 adev->pm.funcs = &iceland_dpm_funcs;
200 }