gpu: nvgpu: Add dGPU clocks support

JIRA DNVGPU-42

Change-Id: Ic2fca9d0cf82f2823654ac5e8f0772a1eec7b3b5
Signed-off-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1205850
(cherry picked from commit b9f5c6bc4e649162d63e33d65b725872340ca114)
Reviewed-on: http://git-master/r/1227257
GVS: Gerrit_Virtual_Submit

2 files changed, 120 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/pstate/pstate.c b/drivers/gpu/nvgpu/pstate/pstate.c
new file mode 100644
index 00000000..83f17937
--- /dev/null
+++ b/drivers/gpu/nvgpu/pstate/pstate.c
@@ -0,0 +1,101 @@
+/*
+ * general p state infrastructure
+ *
+ * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include "gk20a/gk20a.h"
+#include "clk/clk.h"
+#include "perf/perf.h"
+
+/*sw setup for pstate components*/
+int gk20a_init_pstate_support(struct gk20a *g)
+{
+        u32 err;
+
+        gk20a_dbg_fn("");
+
+        err = clk_vin_sw_setup(g);
+        if (err)
+                return err;
+
+        err = clk_fll_sw_setup(g);
+        if (err)
+                return err;
+
+        err = vfe_var_sw_setup(g);
+        if (err)
+                return err;
+
+        err = vfe_equ_sw_setup(g);
+        if (err)
+                return err;
+
+        err = clk_domain_sw_setup(g);
+        if (err)
+                return err;
+
+        err = clk_vf_point_sw_setup(g);
+        if (err)
+                return err;
+
+        err = clk_prog_sw_setup(g);
+        return err;
+}
+
+/*sw setup for pstate components*/
+int gk20a_init_pstate_pmu_support(struct gk20a *g)
+{
+        u32 err;
+
+        gk20a_dbg_fn("");
+
+        err = vfe_var_pmu_setup(g);
+        if (err)
+                return err;
+
+        err = vfe_equ_pmu_setup(g);
+        if (err)
+                return err;
+
+        err = clk_domain_pmu_setup(g);
+        if (err)
+                return err;
+
+        err = clk_prog_pmu_setup(g);
+        if (err)
+                return err;
+
+        err = clk_vin_pmu_setup(g);
+        if (err)
+                return err;
+
+        err = clk_fll_pmu_setup(g);
+        if (err)
+                return err;
+
+        err = clk_vf_point_pmu_setup(g);
+        if (err)
+                return err;
+
+        err = clk_pmu_vin_load(g);
+        if (err)
+                return err;
+
+        err = perf_pmu_vfe_load(g);
+        if (err)
+                return err;
+
+        err = clk_pmu_vf_inject(g);
+        return err;
+}
+
diff --git a/drivers/gpu/nvgpu/pstate/pstate.h b/drivers/gpu/nvgpu/pstate/pstate.h
new file mode 100644
index 00000000..fb49adf3
--- /dev/null
+++ b/drivers/gpu/nvgpu/pstate/pstate.h
@@ -0,0 +1,19 @@
+/*
+ * general p state infrastructure
+ *
+ * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include "gk20a/gk20a.h"
+
+int gk20a_init_pstate_support(struct gk20a *g);
+int gk20a_init_pstate_pmu_support(struct gk20a *g);