| /* |
| * Copyright 2014 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| |
| #include <linux/firmware.h> |
| #include "drmP.h" |
| #include "amdgpu.h" |
| #include "tonga_smum.h" |
| |
| MODULE_FIRMWARE("amdgpu/tonga_smc.bin"); |
| |
| static void tonga_dpm_set_funcs(struct amdgpu_device *adev); |
| |
| static int tonga_dpm_early_init(void *handle) |
| { |
| struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| |
| tonga_dpm_set_funcs(adev); |
| |
| return 0; |
| } |
| |
| static int tonga_dpm_init_microcode(struct amdgpu_device *adev) |
| { |
| char fw_name[30] = "amdgpu/tonga_smc.bin"; |
| int err; |
| err = request_firmware(&adev->pm.fw, fw_name, adev->dev); |
| if (err) |
| goto out; |
| err = amdgpu_ucode_validate(adev->pm.fw); |
| |
| out: |
| if (err) { |
| DRM_ERROR("Failed to load firmware \"%s\"", fw_name); |
| release_firmware(adev->pm.fw); |
| adev->pm.fw = NULL; |
| } |
| return err; |
| } |
| |
| static int tonga_dpm_sw_init(void *handle) |
| { |
| int ret; |
| struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| |
| ret = tonga_dpm_init_microcode(adev); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int tonga_dpm_sw_fini(void *handle) |
| { |
| return 0; |
| } |
| |
| static int tonga_dpm_hw_init(void *handle) |
| { |
| int ret; |
| struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| |
| mutex_lock(&adev->pm.mutex); |
| |
| /* smu init only needs to be called at startup, not resume. |
| * It should be in sw_init, but requires the fw info gathered |
| * in sw_init from other IP modules. |
| */ |
| ret = tonga_smu_init(adev); |
| if (ret) { |
| DRM_ERROR("SMU initialization failed\n"); |
| goto fail; |
| } |
| |
| ret = tonga_smu_start(adev); |
| if (ret) { |
| DRM_ERROR("SMU start failed\n"); |
| goto fail; |
| } |
| |
| mutex_unlock(&adev->pm.mutex); |
| return 0; |
| |
| fail: |
| adev->firmware.smu_load = false; |
| mutex_unlock(&adev->pm.mutex); |
| return -EINVAL; |
| } |
| |
| static int tonga_dpm_hw_fini(void *handle) |
| { |
| struct amdgpu_device *adev = (struct amdgpu_device *)handle; |
| |
| mutex_lock(&adev->pm.mutex); |
| /* smu fini only needs to be called at teardown, not suspend. |
| * It should be in sw_fini, but we put it here for symmetry |
| * with smu init. |
| */ |
| tonga_smu_fini(adev); |
| mutex_unlock(&adev->pm.mutex); |
| return 0; |
| } |
| |
| static int tonga_dpm_suspend(void *handle) |
| { |
| return tonga_dpm_hw_fini(handle); |
| } |
| |
| static int tonga_dpm_resume(void *handle) |
| { |
| return tonga_dpm_hw_init(handle); |
| } |
| |
| static int tonga_dpm_set_clockgating_state(void *handle, |
| enum amd_clockgating_state state) |
| { |
| return 0; |
| } |
| |
| static int tonga_dpm_set_powergating_state(void *handle, |
| enum amd_powergating_state state) |
| { |
| return 0; |
| } |
| |
| const struct amd_ip_funcs tonga_dpm_ip_funcs = { |
| .early_init = tonga_dpm_early_init, |
| .late_init = NULL, |
| .sw_init = tonga_dpm_sw_init, |
| .sw_fini = tonga_dpm_sw_fini, |
| .hw_init = tonga_dpm_hw_init, |
| .hw_fini = tonga_dpm_hw_fini, |
| .suspend = tonga_dpm_suspend, |
| .resume = tonga_dpm_resume, |
| .is_idle = NULL, |
| .wait_for_idle = NULL, |
| .soft_reset = NULL, |
| .print_status = NULL, |
| .set_clockgating_state = tonga_dpm_set_clockgating_state, |
| .set_powergating_state = tonga_dpm_set_powergating_state, |
| }; |
| |
| static const struct amdgpu_dpm_funcs tonga_dpm_funcs = { |
| .get_temperature = NULL, |
| .pre_set_power_state = NULL, |
| .set_power_state = NULL, |
| .post_set_power_state = NULL, |
| .display_configuration_changed = NULL, |
| .get_sclk = NULL, |
| .get_mclk = NULL, |
| .print_power_state = NULL, |
| .debugfs_print_current_performance_level = NULL, |
| .force_performance_level = NULL, |
| .vblank_too_short = NULL, |
| .powergate_uvd = NULL, |
| }; |
| |
| static void tonga_dpm_set_funcs(struct amdgpu_device *adev) |
| { |
| if (NULL == adev->pm.funcs) |
| adev->pm.funcs = &tonga_dpm_funcs; |
| } |