1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24
25 #include "nv04.h"
26
27 static int
gk20a_timer_init(struct nouveau_object * object)28 gk20a_timer_init(struct nouveau_object *object)
29 {
30 struct nv04_timer_priv *priv = (void *)object;
31 u32 hi = upper_32_bits(priv->suspend_time);
32 u32 lo = lower_32_bits(priv->suspend_time);
33 int ret;
34
35 ret = nouveau_timer_init(&priv->base);
36 if (ret)
37 return ret;
38
39 nv_debug(priv, "time low : 0x%08x\n", lo);
40 nv_debug(priv, "time high : 0x%08x\n", hi);
41
42 /* restore the time before suspend */
43 nv_wr32(priv, NV04_PTIMER_TIME_1, hi);
44 nv_wr32(priv, NV04_PTIMER_TIME_0, lo);
45 return 0;
46 }
47
48 struct nouveau_oclass
49 gk20a_timer_oclass = {
50 .handle = NV_SUBDEV(TIMER, 0xff),
51 .ofuncs = &(struct nouveau_ofuncs) {
52 .ctor = nv04_timer_ctor,
53 .dtor = nv04_timer_dtor,
54 .init = gk20a_timer_init,
55 .fini = nv04_timer_fini,
56 }
57 };
58