Open source GPL/LGPL release

drivers/gpu/nvgpu/common/power_features/power_features.c

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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 <nvgpu/gk20a.h>
+#include <nvgpu/power_features/cg.h>
+#include <nvgpu/power_features/pg.h>
+#include <nvgpu/power_features/power_features.h>
+
+int nvgpu_cg_pg_disable(struct gk20a *g)
+{
+	int err = 0;
+
+	nvgpu_log_fn(g, " ");
+
+	g->ops.gr.init.wait_initialized(g);
+
+#ifdef CONFIG_NVGPU_POWER_PG
+	/* disable elpg before clock gating */
+	err = nvgpu_pg_elpg_disable(g);
+	if (err != 0) {
+		nvgpu_err(g, "failed to set disable elpg");
+	}
+#endif
+	nvgpu_cg_slcg_gr_perf_ltc_load_disable(g);
+
+	nvgpu_cg_blcg_mode_disable(g);
+
+	nvgpu_cg_elcg_disable(g);
+
+	return err;
+}
+
+int nvgpu_cg_pg_enable(struct gk20a *g)
+{
+	int err = 0;
+
+	nvgpu_log_fn(g, " ");
+
+	g->ops.gr.init.wait_initialized(g);
+
+	nvgpu_cg_elcg_enable(g);
+
+	nvgpu_cg_blcg_mode_enable(g);
+
+	nvgpu_cg_slcg_gr_perf_ltc_load_enable(g);
+
+#ifdef CONFIG_NVGPU_POWER_PG
+	err = nvgpu_pg_elpg_enable(g);
+	if (err != 0) {
+		nvgpu_err(g, "failed to set enable elpg");
+	}
+#endif
+
+	return err;
+}