Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / subdev / timer / gk20a.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/gk20a.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/gk20a.c
new file mode 100644 (file)
index 0000000..80e3806
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/timer/gk20a.c
@@ -0,0 +1,56 @@
+/*
+ * 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 "nv04.h"
+
+static int
+gk20a_timer_init(struct nvkm_object *object)
+{
+       struct nv04_timer_priv *priv = (void *)object;
+       u32 hi = upper_32_bits(priv->suspend_time);
+       u32 lo = lower_32_bits(priv->suspend_time);
+       int ret;
+
+       ret = nvkm_timer_init(&priv->base);
+       if (ret)
+               return ret;
+
+       nv_debug(priv, "time low        : 0x%08x\n", lo);
+       nv_debug(priv, "time high       : 0x%08x\n", hi);
+
+       /* restore the time before suspend */
+       nv_wr32(priv, NV04_PTIMER_TIME_1, hi);
+       nv_wr32(priv, NV04_PTIMER_TIME_0, lo);
+       return 0;
+}
+
+struct nvkm_oclass
+gk20a_timer_oclass = {
+       .handle = NV_SUBDEV(TIMER, 0xff),
+       .ofuncs = &(struct nvkm_ofuncs) {
+               .ctor = nv04_timer_ctor,
+               .dtor = nv04_timer_dtor,
+               .init = gk20a_timer_init,
+               .fini = nv04_timer_fini,
+       }
+};