Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / radeon / trinity_smc.c

diff --git a/kernel/drivers/gpu/drm/radeon/trinity_smc.c b/kernel/drivers/gpu/drm/radeon/trinity_smc.c
new file mode 100644 (file)
index 0000000..99dd045
--- /dev/null
+++ b/kernel/drivers/gpu/drm/radeon/trinity_smc.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2012 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 "drmP.h"
+#include "radeon.h"
+#include "trinityd.h"
+#include "trinity_dpm.h"
+#include "ppsmc.h"
+
+static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
+{
+       int i;
+       u32 v = 0;
+
+       WREG32(SMC_MESSAGE_0, id);
+       for (i = 0; i < rdev->usec_timeout; i++) {
+               if (RREG32(SMC_RESP_0) != 0)
+                       break;
+               udelay(1);
+       }
+       v = RREG32(SMC_RESP_0);
+
+       if (v != 1) {
+               if (v == 0xFF) {
+                       DRM_ERROR("SMC failed to handle the message!\n");
+                       return -EINVAL;
+               } else if (v == 0xFE) {
+                       DRM_ERROR("Unknown SMC message!\n");
+                       return -EINVAL;
+               }
+       }
+
+       return 0;
+}
+
+int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
+{
+       if (enable)
+               return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM);
+       else
+               return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
+}
+
+int trinity_dpm_config(struct radeon_device *rdev, bool enable)
+{
+       if (enable)
+               WREG32_SMC(SMU_SCRATCH0, 1);
+       else
+               WREG32_SMC(SMU_SCRATCH0, 0);
+
+       return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
+}
+
+int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
+{
+       WREG32_SMC(SMU_SCRATCH0, n);
+
+       return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
+}
+
+int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
+{
+       WREG32_SMC(SMU_SCRATCH0, n);
+
+       return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
+}
+
+int trinity_uvd_dpm_config(struct radeon_device *rdev)
+{
+       return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
+}
+
+int trinity_dpm_no_forced_level(struct radeon_device *rdev)
+{
+       return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
+}
+
+int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
+                                         bool enable)
+{
+       if (enable)
+               return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
+       else
+               return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
+}
+
+int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
+{
+       return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
+}
+
+void trinity_acquire_mutex(struct radeon_device *rdev)
+{
+       int i;
+
+       WREG32(SMC_INT_REQ, 1);
+       for (i = 0; i < rdev->usec_timeout; i++) {
+               if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
+                       break;
+               udelay(1);
+       }
+}
+
+void trinity_release_mutex(struct radeon_device *rdev)
+{
+       WREG32(SMC_INT_REQ, 0);
+}