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 struct g94_i2c_pad { 27 struct nvkm_i2c_pad base; 28 int addr; 29 }; 30 31 static int 32 g94_i2c_pad_fini(struct nvkm_object *object, bool suspend) 33 { 34 struct nvkm_i2c *i2c = (void *)nvkm_i2c(object); 35 struct nvkm_device *device = i2c->subdev.device; 36 struct g94_i2c_pad *pad = (void *)object; 37 nvkm_mask(device, 0x00e50c + pad->addr, 0x00000001, 0x00000001); 38 return nvkm_i2c_pad_fini(&pad->base, suspend); 39 } 40 41 static int 42 g94_i2c_pad_init(struct nvkm_object *object) 43 { 44 struct nvkm_i2c *i2c = (void *)nvkm_i2c(object); 45 struct nvkm_device *device = i2c->subdev.device; 46 struct g94_i2c_pad *pad = (void *)object; 47 48 switch (nv_oclass(pad->base.next)->handle) { 49 case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX): 50 nvkm_mask(device, 0x00e500 + pad->addr, 0x0000c003, 0x00000002); 51 break; 52 case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT): 53 default: 54 nvkm_mask(device, 0x00e500 + pad->addr, 0x0000c003, 0x0000c001); 55 break; 56 } 57 58 nvkm_mask(device, 0x00e50c + pad->addr, 0x00000001, 0x00000000); 59 return nvkm_i2c_pad_init(&pad->base); 60 } 61 62 static int 63 g94_i2c_pad_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 64 struct nvkm_oclass *oclass, void *data, u32 index, 65 struct nvkm_object **pobject) 66 { 67 struct g94_i2c_pad *pad; 68 int ret; 69 70 ret = nvkm_i2c_pad_create(parent, engine, oclass, index, &pad); 71 *pobject = nv_object(pad); 72 if (ret) 73 return ret; 74 75 pad->addr = index * 0x50;; 76 return 0; 77 } 78 79 struct nvkm_oclass 80 g94_i2c_pad_oclass = { 81 .ofuncs = &(struct nvkm_ofuncs) { 82 .ctor = g94_i2c_pad_ctor, 83 .dtor = _nvkm_i2c_pad_dtor, 84 .init = g94_i2c_pad_init, 85 .fini = g94_i2c_pad_fini, 86 }, 87 }; 88