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_priv *priv = (void *)object; 30 u32 hi = upper_32_bits(priv->suspend_time); 31 u32 lo = lower_32_bits(priv->suspend_time); 32 int ret; 33 34 ret = nvkm_timer_init(&priv->base); 35 if (ret) 36 return ret; 37 38 nv_debug(priv, "time low : 0x%08x\n", lo); 39 nv_debug(priv, "time high : 0x%08x\n", hi); 40 41 /* restore the time before suspend */ 42 nv_wr32(priv, NV04_PTIMER_TIME_1, hi); 43 nv_wr32(priv, NV04_PTIMER_TIME_0, lo); 44 return 0; 45 } 46 47 struct nvkm_oclass 48 gk20a_timer_oclass = { 49 .handle = NV_SUBDEV(TIMER, 0xff), 50 .ofuncs = &(struct nvkm_ofuncs) { 51 .ctor = nv04_timer_ctor, 52 .dtor = nv04_timer_dtor, 53 .init = gk20a_timer_init, 54 .fini = nv04_timer_fini, 55 } 56 }; 57