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 "nv50.h" 25 26static int 27gf110_i2c_sense_scl(struct nvkm_i2c_port *base) 28{ 29 struct nv50_i2c_priv *priv = (void *)nvkm_i2c(base); 30 struct nv50_i2c_port *port = (void *)base; 31 return !!(nv_rd32(priv, port->addr) & 0x00000010); 32} 33 34static int 35gf110_i2c_sense_sda(struct nvkm_i2c_port *base) 36{ 37 struct nv50_i2c_priv *priv = (void *)nvkm_i2c(base); 38 struct nv50_i2c_port *port = (void *)base; 39 return !!(nv_rd32(priv, port->addr) & 0x00000020); 40} 41 42static const struct nvkm_i2c_func 43gf110_i2c_func = { 44 .drive_scl = nv50_i2c_drive_scl, 45 .drive_sda = nv50_i2c_drive_sda, 46 .sense_scl = gf110_i2c_sense_scl, 47 .sense_sda = gf110_i2c_sense_sda, 48}; 49 50int 51gf110_i2c_port_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 52 struct nvkm_oclass *oclass, void *data, u32 index, 53 struct nvkm_object **pobject) 54{ 55 struct dcb_i2c_entry *info = data; 56 struct nv50_i2c_port *port; 57 int ret; 58 59 ret = nvkm_i2c_port_create(parent, engine, oclass, index, 60 &nvkm_i2c_bit_algo, &gf110_i2c_func, &port); 61 *pobject = nv_object(port); 62 if (ret) 63 return ret; 64 65 port->state = 0x00000007; 66 port->addr = 0x00d014 + (info->drive * 0x20); 67 return 0; 68} 69 70struct nvkm_oclass 71gf110_i2c_sclass[] = { 72 { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT), 73 .ofuncs = &(struct nvkm_ofuncs) { 74 .ctor = gf110_i2c_port_ctor, 75 .dtor = _nvkm_i2c_port_dtor, 76 .init = nv50_i2c_port_init, 77 .fini = _nvkm_i2c_port_fini, 78 }, 79 }, 80 { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX), 81 .ofuncs = &(struct nvkm_ofuncs) { 82 .ctor = g94_aux_port_ctor, 83 .dtor = _nvkm_i2c_port_dtor, 84 .init = _nvkm_i2c_port_init, 85 .fini = _nvkm_i2c_port_fini, 86 }, 87 }, 88 {} 89}; 90 91struct nvkm_oclass * 92gf110_i2c_oclass = &(struct nvkm_i2c_impl) { 93 .base.handle = NV_SUBDEV(I2C, 0xd0), 94 .base.ofuncs = &(struct nvkm_ofuncs) { 95 .ctor = _nvkm_i2c_ctor, 96 .dtor = _nvkm_i2c_dtor, 97 .init = _nvkm_i2c_init, 98 .fini = _nvkm_i2c_fini, 99 }, 100 .sclass = gf110_i2c_sclass, 101 .pad_x = &nv04_i2c_pad_oclass, 102 .pad_s = &g94_i2c_pad_oclass, 103 .aux = 4, 104 .aux_stat = g94_aux_stat, 105 .aux_mask = g94_aux_mask, 106}.base; 107