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authorAlex Deucher <alexander.deucher@amd.com>2013-04-13 00:40:41 +0400
committerAlex Deucher <alexander.deucher@amd.com>2013-06-28 03:15:45 +0400
commitd70229f704474b2932e03367a528773e336f6205 (patch)
tree8e56480f4073505457f212706f7f3f81b89583bc /drivers/gpu/drm/radeon/trinity_smc.c
parent80ea2c129c76a4159a93efeaef4385b6c964dfac (diff)
downloadlinux-d70229f704474b2932e03367a528773e336f6205.tar.xz
drm/radeon/kms: add dpm support for trinity asics
This adds dpm support for trinity asics. This includes: - clockgating - powergating - dynamic engine clock scaling - dynamic voltage scaling set radeon.dpm=1 to enable it. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/trinity_smc.c')
-rw-r--r--drivers/gpu/drm/radeon/trinity_smc.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/trinity_smc.c b/drivers/gpu/drm/radeon/trinity_smc.c
new file mode 100644
index 000000000000..60ffc1e6f21b
--- /dev/null
+++ b/drivers/gpu/drm/radeon/trinity_smc.c
@@ -0,0 +1,110 @@
+/*
+ * 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"
+
+struct trinity_ps *trinity_get_ps(struct radeon_ps *rps);
+struct trinity_power_info *trinity_get_pi(struct radeon_device *rdev);
+
+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_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_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);
+}