These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / gpu / drm / amd / amdgpu / tonga_dpm.c

diff --git a/kernel/drivers/gpu/drm/amd/amdgpu/tonga_dpm.c b/kernel/drivers/gpu/drm/amd/amdgpu/tonga_dpm.c
new file mode 100644 (file)
index 0000000..63d6cb3
--- /dev/null
+++ b/kernel/drivers/gpu/drm/amd/amdgpu/tonga_dpm.c
@@ -0,0 +1,181 @@
+/*
+ * 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 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;
+}