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 #include "nv04.h"
25 
26 static int
27 gk20a_timer_init(struct nvkm_object *object)
28 {
29 	struct nv04_timer *tmr = (void *)object;
30 	struct nvkm_device *device = tmr->base.subdev.device;
31 	u32 hi = upper_32_bits(tmr->suspend_time);
32 	u32 lo = lower_32_bits(tmr->suspend_time);
33 	int ret;
34 
35 	ret = nvkm_timer_init(&tmr->base);
36 	if (ret)
37 		return ret;
38 
39 	nv_debug(tmr, "time low        : 0x%08x\n", lo);
40 	nv_debug(tmr, "time high       : 0x%08x\n", hi);
41 
42 	/* restore the time before suspend */
43 	nvkm_wr32(device, NV04_PTIMER_TIME_1, hi);
44 	nvkm_wr32(device, NV04_PTIMER_TIME_0, lo);
45 	return 0;
46 }
47 
48 struct nvkm_oclass
49 gk20a_timer_oclass = {
50 	.handle = NV_SUBDEV(TIMER, 0xff),
51 	.ofuncs = &(struct nvkm_ofuncs) {
52 		.ctor = nv04_timer_ctor,
53 		.dtor = nv04_timer_dtor,
54 		.init = gk20a_timer_init,
55 		.fini = nv04_timer_fini,
56 	}
57 };
58