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