1 /* 2 * Copyright 2014 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 "pad.h" 25 26 int 27 _nvkm_i2c_pad_fini(struct nvkm_object *object, bool suspend) 28 { 29 struct nvkm_i2c_pad *pad = (void *)object; 30 DBG("-> NULL\n"); 31 pad->port = NULL; 32 return nvkm_object_fini(&pad->base, suspend); 33 } 34 35 int 36 _nvkm_i2c_pad_init(struct nvkm_object *object) 37 { 38 struct nvkm_i2c_pad *pad = (void *)object; 39 DBG("-> PORT:%02x\n", pad->next->index); 40 pad->port = pad->next; 41 return nvkm_object_init(&pad->base); 42 } 43 44 int 45 nvkm_i2c_pad_create_(struct nvkm_object *parent, 46 struct nvkm_object *engine, 47 struct nvkm_oclass *oclass, int index, 48 int size, void **pobject) 49 { 50 struct nvkm_i2c *i2c = nvkm_i2c(parent); 51 struct nvkm_i2c_port *port; 52 struct nvkm_i2c_pad *pad; 53 int ret; 54 55 list_for_each_entry(port, &i2c->ports, head) { 56 pad = nvkm_i2c_pad(port); 57 if (pad->index == index) { 58 atomic_inc(&nv_object(pad)->refcount); 59 *pobject = pad; 60 return 1; 61 } 62 } 63 64 ret = nvkm_object_create_(parent, engine, oclass, 0, size, pobject); 65 pad = *pobject; 66 if (ret) 67 return ret; 68 69 pad->index = index; 70 return 0; 71 } 72 73 int 74 _nvkm_i2c_pad_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 75 struct nvkm_oclass *oclass, void *data, u32 index, 76 struct nvkm_object **pobject) 77 { 78 struct nvkm_i2c_pad *pad; 79 int ret; 80 ret = nvkm_i2c_pad_create(parent, engine, oclass, index, &pad); 81 *pobject = nv_object(pad); 82 return ret; 83 } 84