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 "tonga_smum.h"
29 MODULE_FIRMWARE("amdgpu/tonga_smc.bin");
31 static void tonga_dpm_set_funcs(struct amdgpu_device *adev);
33 static int tonga_dpm_early_init(void *handle)
35 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
37 tonga_dpm_set_funcs(adev);
42 static int tonga_dpm_init_microcode(struct amdgpu_device *adev)
44 char fw_name[30] = "amdgpu/tonga_smc.bin";
46 err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
49 err = amdgpu_ucode_validate(adev->pm.fw);
53 DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
54 release_firmware(adev->pm.fw);
60 static int tonga_dpm_sw_init(void *handle)
63 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
65 ret = tonga_dpm_init_microcode(adev);
72 static int tonga_dpm_sw_fini(void *handle)
77 static int tonga_dpm_hw_init(void *handle)
80 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
82 mutex_lock(&adev->pm.mutex);
84 /* smu init only needs to be called at startup, not resume.
85 * It should be in sw_init, but requires the fw info gathered
86 * in sw_init from other IP modules.
88 ret = tonga_smu_init(adev);
90 DRM_ERROR("SMU initialization failed\n");
94 ret = tonga_smu_start(adev);
96 DRM_ERROR("SMU start failed\n");
100 mutex_unlock(&adev->pm.mutex);
104 adev->firmware.smu_load = false;
105 mutex_unlock(&adev->pm.mutex);
109 static int tonga_dpm_hw_fini(void *handle)
111 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
113 mutex_lock(&adev->pm.mutex);
114 /* smu fini only needs to be called at teardown, not suspend.
115 * It should be in sw_fini, but we put it here for symmetry
118 tonga_smu_fini(adev);
119 mutex_unlock(&adev->pm.mutex);
123 static int tonga_dpm_suspend(void *handle)
128 static int tonga_dpm_resume(void *handle)
131 struct amdgpu_device *adev = (struct amdgpu_device *)handle;
133 mutex_lock(&adev->pm.mutex);
135 ret = tonga_smu_start(adev);
137 DRM_ERROR("SMU start failed\n");
142 mutex_unlock(&adev->pm.mutex);
146 static int tonga_dpm_set_clockgating_state(void *handle,
147 enum amd_clockgating_state state)
152 static int tonga_dpm_set_powergating_state(void *handle,
153 enum amd_powergating_state state)
158 const struct amd_ip_funcs tonga_dpm_ip_funcs = {
159 .early_init = tonga_dpm_early_init,
161 .sw_init = tonga_dpm_sw_init,
162 .sw_fini = tonga_dpm_sw_fini,
163 .hw_init = tonga_dpm_hw_init,
164 .hw_fini = tonga_dpm_hw_fini,
165 .suspend = tonga_dpm_suspend,
166 .resume = tonga_dpm_resume,
168 .wait_for_idle = NULL,
170 .print_status = NULL,
171 .set_clockgating_state = tonga_dpm_set_clockgating_state,
172 .set_powergating_state = tonga_dpm_set_powergating_state,
175 static const struct amdgpu_dpm_funcs tonga_dpm_funcs = {
176 .get_temperature = NULL,
177 .pre_set_power_state = NULL,
178 .set_power_state = NULL,
179 .post_set_power_state = NULL,
180 .display_configuration_changed = NULL,
183 .print_power_state = NULL,
184 .debugfs_print_current_performance_level = NULL,
185 .force_performance_level = NULL,
186 .vblank_too_short = NULL,
187 .powergate_uvd = NULL,
190 static void tonga_dpm_set_funcs(struct amdgpu_device *adev)
192 if (NULL == adev->pm.funcs)
193 adev->pm.funcs = &tonga_dpm_funcs;