2 * Copyright 2014 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
24 #include <linux/firmware.h>
27 #include "iceland_smum.h"
29 MODULE_FIRMWARE("amdgpu/topaz_smc.bin");
31 static void iceland_dpm_set_funcs(struct amdgpu_device *adev);
33 static int iceland_dpm_early_init(void *handle)
35 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
37 iceland_dpm_set_funcs(adev);
42 static int iceland_dpm_init_microcode(struct amdgpu_device *adev)
44 char fw_name[30] = "amdgpu/topaz_smc.bin";
47 err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
50 err = amdgpu_ucode_validate(adev->pm.fw);
54 DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
55 release_firmware(adev->pm.fw);
61 static int iceland_dpm_sw_init(void *handle)
64 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
66 ret = iceland_dpm_init_microcode(adev);
73 static int iceland_dpm_sw_fini(void *handle)
75 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
77 release_firmware(adev->pm.fw);
83 static int iceland_dpm_hw_init(void *handle)
86 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
88 mutex_lock(&adev->pm.mutex);
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.
94 ret = iceland_smu_init(adev);
96 DRM_ERROR("SMU initialization failed\n");
100 ret = iceland_smu_start(adev);
102 DRM_ERROR("SMU start failed\n");
106 mutex_unlock(&adev->pm.mutex);
110 adev->firmware.smu_load = false;
111 mutex_unlock(&adev->pm.mutex);
115 static int iceland_dpm_hw_fini(void *handle)
117 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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
124 iceland_smu_fini(adev);
125 mutex_unlock(&adev->pm.mutex);
129 static int iceland_dpm_suspend(void *handle)
134 static int iceland_dpm_resume(void *handle)
137 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
139 mutex_lock(&adev->pm.mutex);
141 ret = iceland_smu_start(adev);
143 DRM_ERROR("SMU start failed\n");
148 mutex_unlock(&adev->pm.mutex);
152 static int iceland_dpm_set_clockgating_state(void *handle,
153 enum amd_clockgating_state state)
158 static int iceland_dpm_set_powergating_state(void *handle,
159 enum amd_powergating_state state)
164 const struct amd_ip_funcs iceland_dpm_ip_funcs = {
165 .name = "iceland_dpm",
166 .early_init = iceland_dpm_early_init,
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,
175 .wait_for_idle = NULL,
177 .set_clockgating_state = iceland_dpm_set_clockgating_state,
178 .set_powergating_state = iceland_dpm_set_powergating_state,
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,
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,
196 static void iceland_dpm_set_funcs(struct amdgpu_device *adev)
198 if (NULL == adev->pm.funcs)
199 adev->pm.funcs = &iceland_dpm_funcs;