Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 1 | /* |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 2 | * Copyright 2013 Red Hat Inc. |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 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 | */ |
Ben Skeggs | c26fe84 | 2014-05-13 13:59:26 +1000 | [diff] [blame] | 24 | #include "priv.h" |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 25 | #include "aux.h" |
| 26 | #include "bus.h" |
Ben Skeggs | 9efc583 | 2014-05-29 11:35:10 +1000 | [diff] [blame] | 27 | #include "pad.h" |
Ben Skeggs | c26fe84 | 2014-05-13 13:59:26 +1000 | [diff] [blame] | 28 | |
Ben Skeggs | b9ec142 | 2015-01-14 15:04:16 +1000 | [diff] [blame] | 29 | #include <core/notify.h> |
| 30 | #include <core/option.h> |
| 31 | #include <subdev/bios.h> |
| 32 | #include <subdev/bios/dcb.h> |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 33 | #include <subdev/bios/i2c.h> |
Ben Skeggs | b9ec142 | 2015-01-14 15:04:16 +1000 | [diff] [blame] | 34 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 35 | static struct nvkm_i2c_pad * |
| 36 | nvkm_i2c_pad_find(struct nvkm_i2c *i2c, int id) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 37 | { |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 38 | struct nvkm_i2c_pad *pad; |
Ben Skeggs | d2ae2eb | 2014-05-29 11:07:16 +1000 | [diff] [blame] | 39 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 40 | list_for_each_entry(pad, &i2c->pad, head) { |
| 41 | if (pad->id == id) |
| 42 | return pad; |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 43 | } |
| 44 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 45 | return NULL; |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 46 | } |
| 47 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 48 | struct nvkm_i2c_bus * |
| 49 | nvkm_i2c_bus_find(struct nvkm_i2c *i2c, int id) |
Francisco Jerez | 6d416d8 | 2010-07-19 15:55:08 +0200 | [diff] [blame] | 50 | { |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 51 | struct nvkm_bios *bios = i2c->subdev.device->bios; |
| 52 | struct nvkm_i2c_bus *bus; |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 53 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 54 | if (id == NVKM_I2C_BUS_PRI || id == NVKM_I2C_BUS_SEC) { |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 55 | u8 ver, hdr, cnt, len; |
| 56 | u16 i2c = dcb_i2c_table(bios, &ver, &hdr, &cnt, &len); |
| 57 | if (i2c && ver >= 0x30) { |
Ben Skeggs | 7f5f518 | 2015-08-20 14:54:13 +1000 | [diff] [blame] | 58 | u8 auxidx = nvbios_rd08(bios, i2c + 4); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 59 | if (id == NVKM_I2C_BUS_PRI) |
| 60 | id = NVKM_I2C_BUS_CCB((auxidx & 0x0f) >> 0); |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 61 | else |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 62 | id = NVKM_I2C_BUS_CCB((auxidx & 0xf0) >> 4); |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 63 | } else { |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 64 | id = NVKM_I2C_BUS_CCB(2); |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 65 | } |
| 66 | } |
| 67 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 68 | list_for_each_entry(bus, &i2c->bus, head) { |
| 69 | if (bus->id == id) |
| 70 | return bus; |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 71 | } |
| 72 | |
Ben Skeggs | df3ef6a | 2013-02-11 20:06:04 +1000 | [diff] [blame] | 73 | return NULL; |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 74 | } |
| 75 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 76 | struct nvkm_i2c_aux * |
| 77 | nvkm_i2c_aux_find(struct nvkm_i2c *i2c, int id) |
Ben Skeggs | 548ddb6 | 2013-02-16 13:19:18 +1000 | [diff] [blame] | 78 | { |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 79 | struct nvkm_i2c_aux *aux; |
Ben Skeggs | 548ddb6 | 2013-02-16 13:19:18 +1000 | [diff] [blame] | 80 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 81 | list_for_each_entry(aux, &i2c->aux, head) { |
| 82 | if (aux->id == id) |
| 83 | return aux; |
Ben Skeggs | 548ddb6 | 2013-02-16 13:19:18 +1000 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | return NULL; |
| 87 | } |
| 88 | |
Ben Skeggs | d2ae2eb | 2014-05-29 11:07:16 +1000 | [diff] [blame] | 89 | static void |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 90 | nvkm_i2c_intr_fini(struct nvkm_event *event, int type, int id) |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 91 | { |
Ben Skeggs | b9ec142 | 2015-01-14 15:04:16 +1000 | [diff] [blame] | 92 | struct nvkm_i2c *i2c = container_of(event, typeof(*i2c), event); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 93 | struct nvkm_i2c_aux *aux = nvkm_i2c_aux_find(i2c, id); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 94 | if (aux) |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 95 | i2c->func->aux_mask(i2c, type, aux->intr, 0); |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | static void |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 99 | nvkm_i2c_intr_init(struct nvkm_event *event, int type, int id) |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 100 | { |
Ben Skeggs | b9ec142 | 2015-01-14 15:04:16 +1000 | [diff] [blame] | 101 | struct nvkm_i2c *i2c = container_of(event, typeof(*i2c), event); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 102 | struct nvkm_i2c_aux *aux = nvkm_i2c_aux_find(i2c, id); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 103 | if (aux) |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 104 | i2c->func->aux_mask(i2c, type, aux->intr, aux->intr); |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 105 | } |
| 106 | |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 107 | static int |
Ben Skeggs | b9ec142 | 2015-01-14 15:04:16 +1000 | [diff] [blame] | 108 | nvkm_i2c_intr_ctor(struct nvkm_object *object, void *data, u32 size, |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 109 | struct nvkm_notify *notify) |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 110 | { |
| 111 | struct nvkm_i2c_ntfy_req *req = data; |
| 112 | if (!WARN_ON(size != sizeof(*req))) { |
| 113 | notify->size = sizeof(struct nvkm_i2c_ntfy_rep); |
| 114 | notify->types = req->mask; |
| 115 | notify->index = req->port; |
| 116 | return 0; |
| 117 | } |
| 118 | return -EINVAL; |
| 119 | } |
| 120 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 121 | static const struct nvkm_event_func |
| 122 | nvkm_i2c_intr_func = { |
| 123 | .ctor = nvkm_i2c_intr_ctor, |
| 124 | .init = nvkm_i2c_intr_init, |
| 125 | .fini = nvkm_i2c_intr_fini, |
| 126 | }; |
| 127 | |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 128 | static void |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 129 | nvkm_i2c_intr(struct nvkm_subdev *subdev) |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 130 | { |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 131 | struct nvkm_i2c *i2c = nvkm_i2c(subdev); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 132 | struct nvkm_i2c_aux *aux; |
| 133 | u32 hi, lo, rq, tx; |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 134 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 135 | if (!i2c->func->aux_stat) |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 136 | return; |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 137 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 138 | i2c->func->aux_stat(i2c, &hi, &lo, &rq, &tx); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 139 | if (!hi && !lo && !rq && !tx) |
| 140 | return; |
| 141 | |
| 142 | list_for_each_entry(aux, &i2c->aux, head) { |
| 143 | u32 mask = 0; |
| 144 | if (hi & aux->intr) mask |= NVKM_I2C_PLUG; |
| 145 | if (lo & aux->intr) mask |= NVKM_I2C_UNPLUG; |
| 146 | if (rq & aux->intr) mask |= NVKM_I2C_IRQ; |
| 147 | if (tx & aux->intr) mask |= NVKM_I2C_DONE; |
| 148 | if (mask) { |
| 149 | struct nvkm_i2c_ntfy_rep rep = { |
| 150 | .mask = mask, |
| 151 | }; |
| 152 | nvkm_event_send(&i2c->event, rep.mask, aux->id, |
| 153 | &rep, sizeof(rep)); |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 154 | } |
| 155 | } |
| 156 | } |
| 157 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 158 | static int |
| 159 | nvkm_i2c_fini(struct nvkm_subdev *subdev, bool suspend) |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 160 | { |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 161 | struct nvkm_i2c *i2c = nvkm_i2c(subdev); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 162 | struct nvkm_i2c_pad *pad; |
Lyude Paul | 1bf3c11 | 2019-04-09 16:23:30 -0400 | [diff] [blame] | 163 | struct nvkm_i2c_bus *bus; |
| 164 | struct nvkm_i2c_aux *aux; |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 165 | u32 mask; |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 166 | |
Lyude Paul | 1bf3c11 | 2019-04-09 16:23:30 -0400 | [diff] [blame] | 167 | list_for_each_entry(aux, &i2c->aux, head) { |
| 168 | nvkm_i2c_aux_fini(aux); |
| 169 | } |
| 170 | |
| 171 | list_for_each_entry(bus, &i2c->bus, head) { |
| 172 | nvkm_i2c_bus_fini(bus); |
| 173 | } |
| 174 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 175 | if ((mask = (1 << i2c->func->aux) - 1), i2c->func->aux_stat) { |
| 176 | i2c->func->aux_mask(i2c, NVKM_I2C_ANY, mask, 0); |
| 177 | i2c->func->aux_stat(i2c, &mask, &mask, &mask, &mask); |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 178 | } |
| 179 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 180 | list_for_each_entry(pad, &i2c->pad, head) { |
| 181 | nvkm_i2c_pad_fini(pad); |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 182 | } |
| 183 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 184 | return 0; |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 185 | } |
| 186 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 187 | static int |
Lyude Paul | 0e0d33f | 2019-06-26 14:10:27 -0400 | [diff] [blame] | 188 | nvkm_i2c_preinit(struct nvkm_subdev *subdev) |
| 189 | { |
| 190 | struct nvkm_i2c *i2c = nvkm_i2c(subdev); |
| 191 | struct nvkm_i2c_bus *bus; |
| 192 | struct nvkm_i2c_pad *pad; |
| 193 | |
| 194 | /* |
| 195 | * We init our i2c busses as early as possible, since they may be |
| 196 | * needed by the vbios init scripts on some cards |
| 197 | */ |
| 198 | list_for_each_entry(pad, &i2c->pad, head) |
| 199 | nvkm_i2c_pad_init(pad); |
| 200 | list_for_each_entry(bus, &i2c->bus, head) |
| 201 | nvkm_i2c_bus_init(bus); |
| 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | static int |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 207 | nvkm_i2c_init(struct nvkm_subdev *subdev) |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 208 | { |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 209 | struct nvkm_i2c *i2c = nvkm_i2c(subdev); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 210 | struct nvkm_i2c_bus *bus; |
| 211 | struct nvkm_i2c_pad *pad; |
Lyude Paul | 1bf3c11 | 2019-04-09 16:23:30 -0400 | [diff] [blame] | 212 | struct nvkm_i2c_aux *aux; |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 213 | |
| 214 | list_for_each_entry(pad, &i2c->pad, head) { |
| 215 | nvkm_i2c_pad_init(pad); |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 216 | } |
| 217 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 218 | list_for_each_entry(bus, &i2c->bus, head) { |
| 219 | nvkm_i2c_bus_init(bus); |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 220 | } |
| 221 | |
Lyude Paul | 1bf3c11 | 2019-04-09 16:23:30 -0400 | [diff] [blame] | 222 | list_for_each_entry(aux, &i2c->aux, head) { |
| 223 | nvkm_i2c_aux_init(aux); |
| 224 | } |
| 225 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 226 | return 0; |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 227 | } |
| 228 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 229 | static void * |
| 230 | nvkm_i2c_dtor(struct nvkm_subdev *subdev) |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 231 | { |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 232 | struct nvkm_i2c *i2c = nvkm_i2c(subdev); |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 233 | |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 234 | nvkm_event_fini(&i2c->event); |
Ben Skeggs | 3668a33 | 2014-05-13 14:47:36 +1000 | [diff] [blame] | 235 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 236 | while (!list_empty(&i2c->aux)) { |
| 237 | struct nvkm_i2c_aux *aux = |
| 238 | list_first_entry(&i2c->aux, typeof(*aux), head); |
| 239 | nvkm_i2c_aux_del(&aux); |
| 240 | } |
| 241 | |
| 242 | while (!list_empty(&i2c->bus)) { |
| 243 | struct nvkm_i2c_bus *bus = |
| 244 | list_first_entry(&i2c->bus, typeof(*bus), head); |
| 245 | nvkm_i2c_bus_del(&bus); |
| 246 | } |
| 247 | |
| 248 | while (!list_empty(&i2c->pad)) { |
| 249 | struct nvkm_i2c_pad *pad = |
| 250 | list_first_entry(&i2c->pad, typeof(*pad), head); |
| 251 | nvkm_i2c_pad_del(&pad); |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 252 | } |
| 253 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 254 | return i2c; |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 255 | } |
| 256 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 257 | static const struct nvkm_subdev_func |
| 258 | nvkm_i2c = { |
| 259 | .dtor = nvkm_i2c_dtor, |
Lyude Paul | 0e0d33f | 2019-06-26 14:10:27 -0400 | [diff] [blame] | 260 | .preinit = nvkm_i2c_preinit, |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 261 | .init = nvkm_i2c_init, |
| 262 | .fini = nvkm_i2c_fini, |
| 263 | .intr = nvkm_i2c_intr, |
| 264 | }; |
| 265 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 266 | static const struct nvkm_i2c_drv { |
| 267 | u8 bios; |
| 268 | u8 addr; |
| 269 | int (*pad_new)(struct nvkm_i2c_bus *, int id, u8 addr, |
| 270 | struct nvkm_i2c_pad **); |
Ben Skeggs | 309a570 | 2014-08-19 08:14:08 +1000 | [diff] [blame] | 271 | } |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 272 | nvkm_i2c_drv[] = { |
| 273 | { 0x0d, 0x39, anx9805_pad_new }, |
| 274 | { 0x0e, 0x3b, anx9805_pad_new }, |
| 275 | {} |
| 276 | }; |
Ben Skeggs | 309a570 | 2014-08-19 08:14:08 +1000 | [diff] [blame] | 277 | |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 278 | int |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 279 | nvkm_i2c_new_(const struct nvkm_i2c_func *func, struct nvkm_device *device, |
| 280 | int index, struct nvkm_i2c **pi2c) |
Ben Skeggs | 7dcd060c | 2013-02-16 15:21:58 +1000 | [diff] [blame] | 281 | { |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 282 | struct nvkm_bios *bios = device->bios; |
Ben Skeggs | b9ec142 | 2015-01-14 15:04:16 +1000 | [diff] [blame] | 283 | struct nvkm_i2c *i2c; |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 284 | struct dcb_i2c_entry ccbE; |
| 285 | struct dcb_output dcbE; |
| 286 | u8 ver, hdr; |
| 287 | int ret, i; |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 288 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 289 | if (!(i2c = *pi2c = kzalloc(sizeof(*i2c), GFP_KERNEL))) |
| 290 | return -ENOMEM; |
Ben Skeggs | 4196faa | 2012-07-10 14:36:38 +1000 | [diff] [blame] | 291 | |
Ben Skeggs | 56d06fa | 2016-04-08 17:24:40 +1000 | [diff] [blame] | 292 | nvkm_subdev_ctor(&nvkm_i2c, device, index, &i2c->subdev); |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 293 | i2c->func = func; |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 294 | INIT_LIST_HEAD(&i2c->pad); |
| 295 | INIT_LIST_HEAD(&i2c->bus); |
| 296 | INIT_LIST_HEAD(&i2c->aux); |
| 297 | |
Ben Skeggs | 5effecd | 2013-02-14 17:48:58 -0500 | [diff] [blame] | 298 | i = -1; |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 299 | while (!dcb_i2c_parse(bios, ++i, &ccbE)) { |
| 300 | struct nvkm_i2c_pad *pad = NULL; |
| 301 | struct nvkm_i2c_bus *bus = NULL; |
| 302 | struct nvkm_i2c_aux *aux = NULL; |
Ben Skeggs | 5effecd | 2013-02-14 17:48:58 -0500 | [diff] [blame] | 303 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 304 | nvkm_debug(&i2c->subdev, "ccb %02x: type %02x drive %02x " |
| 305 | "sense %02x share %02x auxch %02x\n", i, ccbE.type, |
| 306 | ccbE.drive, ccbE.sense, ccbE.share, ccbE.auxch); |
| 307 | |
| 308 | if (ccbE.share != DCB_I2C_UNUSED) { |
| 309 | const int id = NVKM_I2C_PAD_HYBRID(ccbE.share); |
| 310 | if (!(pad = nvkm_i2c_pad_find(i2c, id))) |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 311 | ret = func->pad_s_new(i2c, id, &pad); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 312 | else |
| 313 | ret = 0; |
| 314 | } else { |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 315 | ret = func->pad_x_new(i2c, NVKM_I2C_PAD_CCB(i), &pad); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | if (ret) { |
| 319 | nvkm_error(&i2c->subdev, "ccb %02x pad, %d\n", i, ret); |
| 320 | nvkm_i2c_pad_del(&pad); |
Ben Skeggs | 5effecd | 2013-02-14 17:48:58 -0500 | [diff] [blame] | 321 | continue; |
| 322 | } |
| 323 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 324 | if (pad->func->bus_new_0 && ccbE.type == DCB_I2C_NV04_BIT) { |
| 325 | ret = pad->func->bus_new_0(pad, NVKM_I2C_BUS_CCB(i), |
| 326 | ccbE.drive, |
| 327 | ccbE.sense, &bus); |
| 328 | } else |
| 329 | if (pad->func->bus_new_4 && |
| 330 | ( ccbE.type == DCB_I2C_NV4E_BIT || |
| 331 | ccbE.type == DCB_I2C_NVIO_BIT || |
| 332 | (ccbE.type == DCB_I2C_PMGR && |
| 333 | ccbE.drive != DCB_I2C_UNUSED))) { |
| 334 | ret = pad->func->bus_new_4(pad, NVKM_I2C_BUS_CCB(i), |
| 335 | ccbE.drive, &bus); |
| 336 | } |
| 337 | |
| 338 | if (ret) { |
| 339 | nvkm_error(&i2c->subdev, "ccb %02x bus, %d\n", i, ret); |
| 340 | nvkm_i2c_bus_del(&bus); |
| 341 | } |
| 342 | |
| 343 | if (pad->func->aux_new_6 && |
| 344 | ( ccbE.type == DCB_I2C_NVIO_AUX || |
| 345 | (ccbE.type == DCB_I2C_PMGR && |
| 346 | ccbE.auxch != DCB_I2C_UNUSED))) { |
| 347 | ret = pad->func->aux_new_6(pad, NVKM_I2C_BUS_CCB(i), |
| 348 | ccbE.auxch, &aux); |
| 349 | } else { |
| 350 | ret = 0; |
| 351 | } |
| 352 | |
| 353 | if (ret) { |
| 354 | nvkm_error(&i2c->subdev, "ccb %02x aux, %d\n", i, ret); |
| 355 | nvkm_i2c_aux_del(&aux); |
| 356 | } |
| 357 | |
| 358 | if (ccbE.type != DCB_I2C_UNUSED && !bus && !aux) { |
| 359 | nvkm_warn(&i2c->subdev, "ccb %02x was ignored\n", i); |
| 360 | continue; |
Ben Skeggs | 5effecd | 2013-02-14 17:48:58 -0500 | [diff] [blame] | 361 | } |
| 362 | } |
| 363 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 364 | i = -1; |
| 365 | while (dcb_outp_parse(bios, ++i, &ver, &hdr, &dcbE)) { |
| 366 | const struct nvkm_i2c_drv *drv = nvkm_i2c_drv; |
| 367 | struct nvkm_i2c_bus *bus; |
| 368 | struct nvkm_i2c_pad *pad; |
| 369 | |
| 370 | /* internal outputs handled by native i2c busses (above) */ |
| 371 | if (!dcbE.location) |
| 372 | continue; |
| 373 | |
| 374 | /* we need an i2c bus to talk to the external encoder */ |
| 375 | bus = nvkm_i2c_bus_find(i2c, dcbE.i2c_index); |
| 376 | if (!bus) { |
| 377 | nvkm_debug(&i2c->subdev, "dcb %02x no bus\n", i); |
| 378 | continue; |
| 379 | } |
| 380 | |
| 381 | /* ... and a driver for it */ |
| 382 | while (drv->pad_new) { |
| 383 | if (drv->bios == dcbE.extdev) |
| 384 | break; |
| 385 | drv++; |
| 386 | } |
| 387 | |
| 388 | if (!drv->pad_new) { |
| 389 | nvkm_debug(&i2c->subdev, "dcb %02x drv %02x unknown\n", |
| 390 | i, dcbE.extdev); |
| 391 | continue; |
| 392 | } |
| 393 | |
| 394 | /* find/create an instance of the driver */ |
| 395 | pad = nvkm_i2c_pad_find(i2c, NVKM_I2C_PAD_EXT(dcbE.extdev)); |
| 396 | if (!pad) { |
| 397 | const int id = NVKM_I2C_PAD_EXT(dcbE.extdev); |
| 398 | ret = drv->pad_new(bus, id, drv->addr, &pad); |
| 399 | if (ret) { |
| 400 | nvkm_error(&i2c->subdev, "dcb %02x pad, %d\n", |
| 401 | i, ret); |
| 402 | nvkm_i2c_pad_del(&pad); |
| 403 | continue; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | /* create any i2c bus / aux channel required by the output */ |
| 408 | if (pad->func->aux_new_6 && dcbE.type == DCB_OUTPUT_DP) { |
| 409 | const int id = NVKM_I2C_AUX_EXT(dcbE.extdev); |
| 410 | struct nvkm_i2c_aux *aux = NULL; |
| 411 | ret = pad->func->aux_new_6(pad, id, 0, &aux); |
| 412 | if (ret) { |
| 413 | nvkm_error(&i2c->subdev, "dcb %02x aux, %d\n", |
| 414 | i, ret); |
| 415 | nvkm_i2c_aux_del(&aux); |
| 416 | } |
| 417 | } else |
| 418 | if (pad->func->bus_new_4) { |
| 419 | const int id = NVKM_I2C_BUS_EXT(dcbE.extdev); |
| 420 | struct nvkm_i2c_bus *bus = NULL; |
| 421 | ret = pad->func->bus_new_4(pad, id, 0, &bus); |
| 422 | if (ret) { |
| 423 | nvkm_error(&i2c->subdev, "dcb %02x bus, %d\n", |
| 424 | i, ret); |
| 425 | nvkm_i2c_bus_del(&bus); |
| 426 | } |
| 427 | } |
| 428 | } |
| 429 | |
Ben Skeggs | 49bd8da | 2015-08-20 14:54:20 +1000 | [diff] [blame] | 430 | return nvkm_event_init(&nvkm_i2c_intr_func, 4, i, &i2c->event); |
Ben Skeggs | c26fe84 | 2014-05-13 13:59:26 +1000 | [diff] [blame] | 431 | } |