1 files changed, 172 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..98bd707ac5dc
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/tonga_dpm.c
@@ -0,0 +1,172 @@
+/*
+ * 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("radeon/tonga_smc.bin");
+
+static void tonga_dpm_set_funcs(struct amdgpu_device *adev);
+
+static int tonga_dpm_early_init(struct amdgpu_device *adev)
+{
+        tonga_dpm_set_funcs(adev);
+
+        return 0;
+}
+
+static int tonga_dpm_init_microcode(struct amdgpu_device *adev)
+{
+        char fw_name[30] = "radeon/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(struct amdgpu_device *adev)
+{
+        int ret;
+
+        ret = tonga_dpm_init_microcode(adev);
+        if (ret)
+                return ret;
+
+        return 0;
+}
+
+static int tonga_dpm_sw_fini(struct amdgpu_device *adev)
+{
+        return 0;
+}
+
+static int tonga_dpm_hw_init(struct amdgpu_device *adev)
+{
+        int ret;
+
+        mutex_lock(&adev->pm.mutex);
+
+        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(struct amdgpu_device *adev)
+{
+        mutex_lock(&adev->pm.mutex);
+        tonga_smu_fini(adev);
+        mutex_unlock(&adev->pm.mutex);
+        return 0;
+}
+
+static int tonga_dpm_suspend(struct amdgpu_device *adev)
+{
+        tonga_dpm_hw_fini(adev);
+
+        return 0;
+}
+
+static int tonga_dpm_resume(struct amdgpu_device *adev)
+{
+        tonga_dpm_hw_init(adev);
+
+        return 0;
+}
+
+static int tonga_dpm_set_clockgating_state(struct amdgpu_device *adev,
+                        enum amdgpu_clockgating_state state)
+{
+        return 0;
+}
+
+static int tonga_dpm_set_powergating_state(struct amdgpu_device *adev,
+                        enum amdgpu_powergating_state state)
+{
+        return 0;
+}
+
+const struct amdgpu_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;
+}