Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/clk/nv04.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/clk/nv04.c
new file mode 100644
index 000000000..63dbbb575
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/clk/nv04.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2012 Red Hat 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.
+ *
+ * Authors: Ben Skeggs
+ */
+#include <subdev/clk.h>
+#include "pll.h"
+
+#include <subdev/bios.h>
+#include <subdev/bios/pll.h>
+#include <subdev/devinit/nv04.h>
+
+struct nv04_clk_priv {
+	struct nvkm_clk base;
+};
+
+int
+nv04_clk_pll_calc(struct nvkm_clk *clock, struct nvbios_pll *info,
+		  int clk, struct nvkm_pll_vals *pv)
+{
+	int N1, M1, N2, M2, P;
+	int ret = nv04_pll_calc(nv_subdev(clock), info, clk, &N1, &M1, &N2, &M2, &P);
+	if (ret) {
+		pv->refclk = info->refclk;
+		pv->N1 = N1;
+		pv->M1 = M1;
+		pv->N2 = N2;
+		pv->M2 = M2;
+		pv->log2P = P;
+	}
+	return ret;
+}
+
+int
+nv04_clk_pll_prog(struct nvkm_clk *clk, u32 reg1, struct nvkm_pll_vals *pv)
+{
+	struct nvkm_devinit *devinit = nvkm_devinit(clk);
+	int cv = nvkm_bios(clk)->version.chip;
+
+	if (cv == 0x30 || cv == 0x31 || cv == 0x35 || cv == 0x36 ||
+	    cv >= 0x40) {
+		if (reg1 > 0x405c)
+			setPLL_double_highregs(devinit, reg1, pv);
+		else
+			setPLL_double_lowregs(devinit, reg1, pv);
+	} else
+		setPLL_single(devinit, reg1, pv);
+
+	return 0;
+}
+
+static struct nvkm_domain
+nv04_domain[] = {
+	{ nv_clk_src_max }
+};
+
+static int
+nv04_clk_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+	      struct nvkm_oclass *oclass, void *data, u32 size,
+	      struct nvkm_object **pobject)
+{
+	struct nv04_clk_priv *priv;
+	int ret;
+
+	ret = nvkm_clk_create(parent, engine, oclass, nv04_domain,
+			      NULL, 0, false, &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	priv->base.pll_calc = nv04_clk_pll_calc;
+	priv->base.pll_prog = nv04_clk_pll_prog;
+	return 0;
+}
+
+struct nvkm_oclass
+nv04_clk_oclass = {
+	.handle = NV_SUBDEV(CLK, 0x04),
+	.ofuncs = &(struct nvkm_ofuncs) {
+		.ctor = nv04_clk_ctor,
+		.dtor = _nvkm_clk_dtor,
+		.init = _nvkm_clk_init,
+		.fini = _nvkm_clk_fini,
+	},
+};