diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/tonga_dpm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/tonga_dpm.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/tonga_dpm.c b/drivers/gpu/drm/amd/amdgpu/tonga_dpm.c new file mode 100644 index 000000000000..204903897b4f --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/tonga_dpm.c @@ -0,0 +1,194 @@ +/* + * 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_smumgr.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 0; +} + +static int tonga_dpm_resume(void *handle) +{ + int ret; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + mutex_lock(&adev->pm.mutex); + + ret = tonga_smu_start(adev); + if (ret) { + DRM_ERROR("SMU start failed\n"); + goto fail; + } + +fail: + mutex_unlock(&adev->pm.mutex); + return ret; +} + +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; +} |