1c39f472eSBen Skeggs /* 2c39f472eSBen Skeggs * Copyright 2011 Red Hat Inc. 3c39f472eSBen Skeggs * 4c39f472eSBen Skeggs * Permission is hereby granted, free of charge, to any person obtaining a 5c39f472eSBen Skeggs * copy of this software and associated documentation files (the "Software"), 6c39f472eSBen Skeggs * to deal in the Software without restriction, including without limitation 7c39f472eSBen Skeggs * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8c39f472eSBen Skeggs * and/or sell copies of the Software, and to permit persons to whom the 9c39f472eSBen Skeggs * Software is furnished to do so, subject to the following conditions: 10c39f472eSBen Skeggs * 11c39f472eSBen Skeggs * The above copyright notice and this permission notice shall be included in 12c39f472eSBen Skeggs * all copies or substantial portions of the Software. 13c39f472eSBen Skeggs * 14c39f472eSBen Skeggs * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15c39f472eSBen Skeggs * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16c39f472eSBen Skeggs * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17c39f472eSBen Skeggs * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18c39f472eSBen Skeggs * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19c39f472eSBen Skeggs * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20c39f472eSBen Skeggs * OTHER DEALINGS IN THE SOFTWARE. 21c39f472eSBen Skeggs * 22c39f472eSBen Skeggs * Authors: Ben Skeggs 23c39f472eSBen Skeggs */ 24c39f472eSBen Skeggs #include "priv.h" 25c39f472eSBen Skeggs 2672251facSMark Menzynski #include <core/option.h> 274e7659fcSBen Skeggs #include <core/notify.h> 284e7659fcSBen Skeggs 29c39f472eSBen Skeggs static int 304e7659fcSBen Skeggs nvkm_gpio_drive(struct nvkm_gpio *gpio, int idx, int line, int dir, int out) 31c39f472eSBen Skeggs { 322ea7249fSBen Skeggs return gpio->func->drive(gpio, line, dir, out); 33c39f472eSBen Skeggs } 34c39f472eSBen Skeggs 35c39f472eSBen Skeggs static int 364e7659fcSBen Skeggs nvkm_gpio_sense(struct nvkm_gpio *gpio, int idx, int line) 37c39f472eSBen Skeggs { 382ea7249fSBen Skeggs return gpio->func->sense(gpio, line); 39c39f472eSBen Skeggs } 40c39f472eSBen Skeggs 412ea7249fSBen Skeggs void 422ea7249fSBen Skeggs nvkm_gpio_reset(struct nvkm_gpio *gpio, u8 func) 432ea7249fSBen Skeggs { 442ea7249fSBen Skeggs if (gpio->func->reset) 452ea7249fSBen Skeggs gpio->func->reset(gpio, func); 462ea7249fSBen Skeggs } 472ea7249fSBen Skeggs 482ea7249fSBen Skeggs int 494e7659fcSBen Skeggs nvkm_gpio_find(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line, 50c39f472eSBen Skeggs struct dcb_gpio_func *func) 51c39f472eSBen Skeggs { 52e7d65181SBen Skeggs struct nvkm_device *device = gpio->subdev.device; 5346484438SBen Skeggs struct nvkm_bios *bios = device->bios; 54c39f472eSBen Skeggs u8 ver, len; 55c39f472eSBen Skeggs u16 data; 56c39f472eSBen Skeggs 57c39f472eSBen Skeggs if (line == 0xff && tag == 0xff) 58c39f472eSBen Skeggs return -EINVAL; 59c39f472eSBen Skeggs 60c39f472eSBen Skeggs data = dcb_gpio_match(bios, idx, tag, line, &ver, &len, func); 61c39f472eSBen Skeggs if (data) 62c39f472eSBen Skeggs return 0; 63c39f472eSBen Skeggs 64c39f472eSBen Skeggs /* Apple iMac G4 NV18 */ 65c7af0ff0SBen Skeggs if (device->quirk && device->quirk->tv_gpio) { 66c39f472eSBen Skeggs if (tag == DCB_GPIO_TVDAC0) { 67c39f472eSBen Skeggs *func = (struct dcb_gpio_func) { 68c39f472eSBen Skeggs .func = DCB_GPIO_TVDAC0, 69c7af0ff0SBen Skeggs .line = device->quirk->tv_gpio, 70c39f472eSBen Skeggs .log[0] = 0, 71c39f472eSBen Skeggs .log[1] = 1, 72c39f472eSBen Skeggs }; 73c39f472eSBen Skeggs return 0; 74c39f472eSBen Skeggs } 75c39f472eSBen Skeggs } 76c39f472eSBen Skeggs 77c39f472eSBen Skeggs return -ENOENT; 78c39f472eSBen Skeggs } 79c39f472eSBen Skeggs 802ea7249fSBen Skeggs int 814e7659fcSBen Skeggs nvkm_gpio_set(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line, int state) 82c39f472eSBen Skeggs { 83c39f472eSBen Skeggs struct dcb_gpio_func func; 84c39f472eSBen Skeggs int ret; 85c39f472eSBen Skeggs 864e7659fcSBen Skeggs ret = nvkm_gpio_find(gpio, idx, tag, line, &func); 87c39f472eSBen Skeggs if (ret == 0) { 88c39f472eSBen Skeggs int dir = !!(func.log[state] & 0x02); 89c39f472eSBen Skeggs int out = !!(func.log[state] & 0x01); 904e7659fcSBen Skeggs ret = nvkm_gpio_drive(gpio, idx, func.line, dir, out); 91c39f472eSBen Skeggs } 92c39f472eSBen Skeggs 93c39f472eSBen Skeggs return ret; 94c39f472eSBen Skeggs } 95c39f472eSBen Skeggs 962ea7249fSBen Skeggs int 974e7659fcSBen Skeggs nvkm_gpio_get(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line) 98c39f472eSBen Skeggs { 99c39f472eSBen Skeggs struct dcb_gpio_func func; 100c39f472eSBen Skeggs int ret; 101c39f472eSBen Skeggs 1024e7659fcSBen Skeggs ret = nvkm_gpio_find(gpio, idx, tag, line, &func); 103c39f472eSBen Skeggs if (ret == 0) { 1044e7659fcSBen Skeggs ret = nvkm_gpio_sense(gpio, idx, func.line); 105c39f472eSBen Skeggs if (ret >= 0) 106c39f472eSBen Skeggs ret = (ret == (func.log[1] & 1)); 107c39f472eSBen Skeggs } 108c39f472eSBen Skeggs 109c39f472eSBen Skeggs return ret; 110c39f472eSBen Skeggs } 111c39f472eSBen Skeggs 112c39f472eSBen Skeggs static void 1134e7659fcSBen Skeggs nvkm_gpio_intr_fini(struct nvkm_event *event, int type, int index) 114c39f472eSBen Skeggs { 1154e7659fcSBen Skeggs struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event); 1162ea7249fSBen Skeggs gpio->func->intr_mask(gpio, type, 1 << index, 0); 117c39f472eSBen Skeggs } 118c39f472eSBen Skeggs 119c39f472eSBen Skeggs static void 1204e7659fcSBen Skeggs nvkm_gpio_intr_init(struct nvkm_event *event, int type, int index) 121c39f472eSBen Skeggs { 1224e7659fcSBen Skeggs struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event); 1232ea7249fSBen Skeggs gpio->func->intr_mask(gpio, type, 1 << index, 1 << index); 124c39f472eSBen Skeggs } 125c39f472eSBen Skeggs 126c39f472eSBen Skeggs static int 1274e7659fcSBen Skeggs nvkm_gpio_intr_ctor(struct nvkm_object *object, void *data, u32 size, 128c39f472eSBen Skeggs struct nvkm_notify *notify) 129c39f472eSBen Skeggs { 130c39f472eSBen Skeggs struct nvkm_gpio_ntfy_req *req = data; 131c39f472eSBen Skeggs if (!WARN_ON(size != sizeof(*req))) { 132c39f472eSBen Skeggs notify->size = sizeof(struct nvkm_gpio_ntfy_rep); 133c39f472eSBen Skeggs notify->types = req->mask; 134c39f472eSBen Skeggs notify->index = req->line; 135c39f472eSBen Skeggs return 0; 136c39f472eSBen Skeggs } 137c39f472eSBen Skeggs return -EINVAL; 138c39f472eSBen Skeggs } 139c39f472eSBen Skeggs 1402ea7249fSBen Skeggs static const struct nvkm_event_func 1412ea7249fSBen Skeggs nvkm_gpio_intr_func = { 1422ea7249fSBen Skeggs .ctor = nvkm_gpio_intr_ctor, 1432ea7249fSBen Skeggs .init = nvkm_gpio_intr_init, 1442ea7249fSBen Skeggs .fini = nvkm_gpio_intr_fini, 1452ea7249fSBen Skeggs }; 1462ea7249fSBen Skeggs 147c39f472eSBen Skeggs static void 1484e7659fcSBen Skeggs nvkm_gpio_intr(struct nvkm_subdev *subdev) 149c39f472eSBen Skeggs { 1504e7659fcSBen Skeggs struct nvkm_gpio *gpio = nvkm_gpio(subdev); 151c39f472eSBen Skeggs u32 hi, lo, i; 152c39f472eSBen Skeggs 1532ea7249fSBen Skeggs gpio->func->intr_stat(gpio, &hi, &lo); 154c39f472eSBen Skeggs 1552ea7249fSBen Skeggs for (i = 0; (hi | lo) && i < gpio->func->lines; i++) { 156c39f472eSBen Skeggs struct nvkm_gpio_ntfy_rep rep = { 157c39f472eSBen Skeggs .mask = (NVKM_GPIO_HI * !!(hi & (1 << i))) | 158c39f472eSBen Skeggs (NVKM_GPIO_LO * !!(lo & (1 << i))), 159c39f472eSBen Skeggs }; 160c39f472eSBen Skeggs nvkm_event_send(&gpio->event, rep.mask, i, &rep, sizeof(rep)); 161c39f472eSBen Skeggs } 162c39f472eSBen Skeggs } 163c39f472eSBen Skeggs 1642ea7249fSBen Skeggs static int 1652ea7249fSBen Skeggs nvkm_gpio_fini(struct nvkm_subdev *subdev, bool suspend) 166c39f472eSBen Skeggs { 1672ea7249fSBen Skeggs struct nvkm_gpio *gpio = nvkm_gpio(subdev); 16899a97a8bSAdam Borowski u32 mask = (1ULL << gpio->func->lines) - 1; 169c39f472eSBen Skeggs 1702ea7249fSBen Skeggs gpio->func->intr_mask(gpio, NVKM_GPIO_TOGGLED, mask, 0); 1712ea7249fSBen Skeggs gpio->func->intr_stat(gpio, &mask, &mask); 1722ea7249fSBen Skeggs return 0; 173c39f472eSBen Skeggs } 174c39f472eSBen Skeggs 1756faadbbbSChristoph Hellwig static const struct dmi_system_id gpio_reset_ids[] = { 176c39f472eSBen Skeggs { 177c39f472eSBen Skeggs .ident = "Apple Macbook 10,1", 178c39f472eSBen Skeggs .matches = { 179c39f472eSBen Skeggs DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), 180c39f472eSBen Skeggs DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro10,1"), 181c39f472eSBen Skeggs } 182c39f472eSBen Skeggs }, 183c39f472eSBen Skeggs { } 184c39f472eSBen Skeggs }; 185c39f472eSBen Skeggs 18672251facSMark Menzynski static enum dcb_gpio_func_name power_checks[] = { 187940794b3SMark Menzynski DCB_GPIO_THERM_EXT_POWER_EVENT, 1883c978f73SMark Menzynski DCB_GPIO_POWER_ALERT, 18972251facSMark Menzynski DCB_GPIO_EXT_POWER_LOW, 19072251facSMark Menzynski }; 19172251facSMark Menzynski 1922ea7249fSBen Skeggs static int 1932ea7249fSBen Skeggs nvkm_gpio_init(struct nvkm_subdev *subdev) 194c39f472eSBen Skeggs { 1952ea7249fSBen Skeggs struct nvkm_gpio *gpio = nvkm_gpio(subdev); 19672251facSMark Menzynski struct dcb_gpio_func func; 19772251facSMark Menzynski int ret; 19872251facSMark Menzynski int i; 19972251facSMark Menzynski 2002ea7249fSBen Skeggs if (dmi_check_system(gpio_reset_ids)) 2012ea7249fSBen Skeggs nvkm_gpio_reset(gpio, DCB_GPIO_UNUSED); 20272251facSMark Menzynski 20372251facSMark Menzynski if (nvkm_boolopt(subdev->device->cfgopt, "NvPowerChecks", true)) { 20472251facSMark Menzynski for (i = 0; i < ARRAY_SIZE(power_checks); ++i) { 20572251facSMark Menzynski ret = nvkm_gpio_find(gpio, 0, power_checks[i], 20672251facSMark Menzynski DCB_GPIO_UNUSED, &func); 20772251facSMark Menzynski if (ret) 20872251facSMark Menzynski continue; 20972251facSMark Menzynski 21072251facSMark Menzynski ret = nvkm_gpio_get(gpio, 0, func.func, func.line); 21172251facSMark Menzynski if (!ret) 21272251facSMark Menzynski continue; 21372251facSMark Menzynski 21472251facSMark Menzynski nvkm_error(&gpio->subdev, 21572251facSMark Menzynski "GPU is missing power, check its power " 21672251facSMark Menzynski "cables. Boot with " 21772251facSMark Menzynski "nouveau.config=NvPowerChecks=0 to " 21872251facSMark Menzynski "disable.\n"); 21972251facSMark Menzynski return -EINVAL; 22072251facSMark Menzynski } 22172251facSMark Menzynski } 22272251facSMark Menzynski 2232ea7249fSBen Skeggs return 0; 224c39f472eSBen Skeggs } 225c39f472eSBen Skeggs 2262ea7249fSBen Skeggs static void * 2272ea7249fSBen Skeggs nvkm_gpio_dtor(struct nvkm_subdev *subdev) 228c39f472eSBen Skeggs { 2292ea7249fSBen Skeggs struct nvkm_gpio *gpio = nvkm_gpio(subdev); 230c39f472eSBen Skeggs nvkm_event_fini(&gpio->event); 2312ea7249fSBen Skeggs return gpio; 232c39f472eSBen Skeggs } 233c39f472eSBen Skeggs 2342ea7249fSBen Skeggs static const struct nvkm_subdev_func 2352ea7249fSBen Skeggs nvkm_gpio = { 2362ea7249fSBen Skeggs .dtor = nvkm_gpio_dtor, 2372ea7249fSBen Skeggs .init = nvkm_gpio_init, 2382ea7249fSBen Skeggs .fini = nvkm_gpio_fini, 2392ea7249fSBen Skeggs .intr = nvkm_gpio_intr, 2402ea7249fSBen Skeggs }; 2412ea7249fSBen Skeggs 242c39f472eSBen Skeggs int 2432ea7249fSBen Skeggs nvkm_gpio_new_(const struct nvkm_gpio_func *func, struct nvkm_device *device, 2442ea7249fSBen Skeggs int index, struct nvkm_gpio **pgpio) 245c39f472eSBen Skeggs { 2464e7659fcSBen Skeggs struct nvkm_gpio *gpio; 247c39f472eSBen Skeggs 2482ea7249fSBen Skeggs if (!(gpio = *pgpio = kzalloc(sizeof(*gpio), GFP_KERNEL))) 2492ea7249fSBen Skeggs return -ENOMEM; 250c39f472eSBen Skeggs 25156d06fa2SBen Skeggs nvkm_subdev_ctor(&nvkm_gpio, device, index, &gpio->subdev); 2522ea7249fSBen Skeggs gpio->func = func; 253c39f472eSBen Skeggs 2542ea7249fSBen Skeggs return nvkm_event_init(&nvkm_gpio_intr_func, 2, func->lines, 255c39f472eSBen Skeggs &gpio->event); 256c39f472eSBen Skeggs } 257