X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Famd%2Famdgpu%2Ficeland_dpm.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Famd%2Famdgpu%2Ficeland_dpm.c;h=208d55f41c7f62b49c2cda0fed770d85cc16f10d;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=0000000000000000000000000000000000000000;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git

diff --git a/kernel/drivers/gpu/drm/amd/amdgpu/iceland_dpm.c b/kernel/drivers/gpu/drm/amd/amdgpu/iceland_dpm.c
new file mode 100644
index 000000000..208d55f41
--- /dev/null
+++ b/kernel/drivers/gpu/drm/amd/amdgpu/iceland_dpm.c
@@ -0,0 +1,195 @@
+/*
+ * 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 "iceland_smumgr.h"
+
+MODULE_FIRMWARE("amdgpu/topaz_smc.bin");
+
+static void iceland_dpm_set_funcs(struct amdgpu_device *adev);
+
+static int iceland_dpm_early_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	iceland_dpm_set_funcs(adev);
+
+	return 0;
+}
+
+static int iceland_dpm_init_microcode(struct amdgpu_device *adev)
+{
+	char fw_name[30] = "amdgpu/topaz_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 iceland_dpm_sw_init(void *handle)
+{
+	int ret;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	ret = iceland_dpm_init_microcode(adev);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int iceland_dpm_sw_fini(void *handle)
+{
+	return 0;
+}
+
+static int iceland_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 = iceland_smu_init(adev);
+	if (ret) {
+		DRM_ERROR("SMU initialization failed\n");
+		goto fail;
+	}
+
+	ret = iceland_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 iceland_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.
+	 */
+	iceland_smu_fini(adev);
+	mutex_unlock(&adev->pm.mutex);
+	return 0;
+}
+
+static int iceland_dpm_suspend(void *handle)
+{
+	return 0;
+}
+
+static int iceland_dpm_resume(void *handle)
+{
+	int ret;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	mutex_lock(&adev->pm.mutex);
+
+	ret = iceland_smu_start(adev);
+	if (ret) {
+		DRM_ERROR("SMU start failed\n");
+		goto fail;
+	}
+
+fail:
+	mutex_unlock(&adev->pm.mutex);
+	return ret;
+}
+
+static int iceland_dpm_set_clockgating_state(void *handle,
+			enum amd_clockgating_state state)
+{
+	return 0;
+}
+
+static int iceland_dpm_set_powergating_state(void *handle,
+			enum amd_powergating_state state)
+{
+	return 0;
+}
+
+const struct amd_ip_funcs iceland_dpm_ip_funcs = {
+	.early_init = iceland_dpm_early_init,
+	.late_init = NULL,
+	.sw_init = iceland_dpm_sw_init,
+	.sw_fini = iceland_dpm_sw_fini,
+	.hw_init = iceland_dpm_hw_init,
+	.hw_fini = iceland_dpm_hw_fini,
+	.suspend = iceland_dpm_suspend,
+	.resume = iceland_dpm_resume,
+	.is_idle = NULL,
+	.wait_for_idle = NULL,
+	.soft_reset = NULL,
+	.print_status = NULL,
+	.set_clockgating_state = iceland_dpm_set_clockgating_state,
+	.set_powergating_state = iceland_dpm_set_powergating_state,
+};
+
+static const struct amdgpu_dpm_funcs iceland_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 iceland_dpm_set_funcs(struct amdgpu_device *adev)
+{
+	if (NULL == adev->pm.funcs)
+		adev->pm.funcs = &iceland_dpm_funcs;
+}