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 25c39f472eSBen Skeggs #include <subdev/bios.h> 26c39f472eSBen Skeggs #include <subdev/bios/gpio.h> 27c39f472eSBen Skeggs 28c39f472eSBen Skeggs #include "priv.h" 29c39f472eSBen Skeggs 30c39f472eSBen Skeggs static int 31c39f472eSBen Skeggs nouveau_gpio_drive(struct nouveau_gpio *gpio, 32c39f472eSBen Skeggs int idx, int line, int dir, int out) 33c39f472eSBen Skeggs { 34c39f472eSBen Skeggs const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 35c39f472eSBen Skeggs return impl->drive ? impl->drive(gpio, line, dir, out) : -ENODEV; 36c39f472eSBen Skeggs } 37c39f472eSBen Skeggs 38c39f472eSBen Skeggs static int 39c39f472eSBen Skeggs nouveau_gpio_sense(struct nouveau_gpio *gpio, int idx, int line) 40c39f472eSBen Skeggs { 41c39f472eSBen Skeggs const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 42c39f472eSBen Skeggs return impl->sense ? impl->sense(gpio, line) : -ENODEV; 43c39f472eSBen Skeggs } 44c39f472eSBen Skeggs 45c39f472eSBen Skeggs static int 46c39f472eSBen Skeggs nouveau_gpio_find(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, 47c39f472eSBen Skeggs struct dcb_gpio_func *func) 48c39f472eSBen Skeggs { 49c39f472eSBen Skeggs struct nouveau_bios *bios = nouveau_bios(gpio); 50c39f472eSBen Skeggs u8 ver, len; 51c39f472eSBen Skeggs u16 data; 52c39f472eSBen Skeggs 53c39f472eSBen Skeggs if (line == 0xff && tag == 0xff) 54c39f472eSBen Skeggs return -EINVAL; 55c39f472eSBen Skeggs 56c39f472eSBen Skeggs data = dcb_gpio_match(bios, idx, tag, line, &ver, &len, func); 57c39f472eSBen Skeggs if (data) 58c39f472eSBen Skeggs return 0; 59c39f472eSBen Skeggs 60c39f472eSBen Skeggs /* Apple iMac G4 NV18 */ 61c39f472eSBen Skeggs if (nv_device_match(nv_object(gpio), 0x0189, 0x10de, 0x0010)) { 62c39f472eSBen Skeggs if (tag == DCB_GPIO_TVDAC0) { 63c39f472eSBen Skeggs *func = (struct dcb_gpio_func) { 64c39f472eSBen Skeggs .func = DCB_GPIO_TVDAC0, 65c39f472eSBen Skeggs .line = 4, 66c39f472eSBen Skeggs .log[0] = 0, 67c39f472eSBen Skeggs .log[1] = 1, 68c39f472eSBen Skeggs }; 69c39f472eSBen Skeggs return 0; 70c39f472eSBen Skeggs } 71c39f472eSBen Skeggs } 72c39f472eSBen Skeggs 73c39f472eSBen Skeggs return -ENOENT; 74c39f472eSBen Skeggs } 75c39f472eSBen Skeggs 76c39f472eSBen Skeggs static int 77c39f472eSBen Skeggs nouveau_gpio_set(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, int state) 78c39f472eSBen Skeggs { 79c39f472eSBen Skeggs struct dcb_gpio_func func; 80c39f472eSBen Skeggs int ret; 81c39f472eSBen Skeggs 82c39f472eSBen Skeggs ret = nouveau_gpio_find(gpio, idx, tag, line, &func); 83c39f472eSBen Skeggs if (ret == 0) { 84c39f472eSBen Skeggs int dir = !!(func.log[state] & 0x02); 85c39f472eSBen Skeggs int out = !!(func.log[state] & 0x01); 86c39f472eSBen Skeggs ret = nouveau_gpio_drive(gpio, idx, func.line, dir, out); 87c39f472eSBen Skeggs } 88c39f472eSBen Skeggs 89c39f472eSBen Skeggs return ret; 90c39f472eSBen Skeggs } 91c39f472eSBen Skeggs 92c39f472eSBen Skeggs static int 93c39f472eSBen Skeggs nouveau_gpio_get(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line) 94c39f472eSBen Skeggs { 95c39f472eSBen Skeggs struct dcb_gpio_func func; 96c39f472eSBen Skeggs int ret; 97c39f472eSBen Skeggs 98c39f472eSBen Skeggs ret = nouveau_gpio_find(gpio, idx, tag, line, &func); 99c39f472eSBen Skeggs if (ret == 0) { 100c39f472eSBen Skeggs ret = nouveau_gpio_sense(gpio, idx, func.line); 101c39f472eSBen Skeggs if (ret >= 0) 102c39f472eSBen Skeggs ret = (ret == (func.log[1] & 1)); 103c39f472eSBen Skeggs } 104c39f472eSBen Skeggs 105c39f472eSBen Skeggs return ret; 106c39f472eSBen Skeggs } 107c39f472eSBen Skeggs 108c39f472eSBen Skeggs static void 109c39f472eSBen Skeggs nouveau_gpio_intr_fini(struct nvkm_event *event, int type, int index) 110c39f472eSBen Skeggs { 111c39f472eSBen Skeggs struct nouveau_gpio *gpio = container_of(event, typeof(*gpio), event); 112c39f472eSBen Skeggs const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 113c39f472eSBen Skeggs impl->intr_mask(gpio, type, 1 << index, 0); 114c39f472eSBen Skeggs } 115c39f472eSBen Skeggs 116c39f472eSBen Skeggs static void 117c39f472eSBen Skeggs nouveau_gpio_intr_init(struct nvkm_event *event, int type, int index) 118c39f472eSBen Skeggs { 119c39f472eSBen Skeggs struct nouveau_gpio *gpio = container_of(event, typeof(*gpio), event); 120c39f472eSBen Skeggs const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 121c39f472eSBen Skeggs impl->intr_mask(gpio, type, 1 << index, 1 << index); 122c39f472eSBen Skeggs } 123c39f472eSBen Skeggs 124c39f472eSBen Skeggs static int 125c39f472eSBen Skeggs nouveau_gpio_intr_ctor(struct nouveau_object *object, void *data, u32 size, 126c39f472eSBen Skeggs struct nvkm_notify *notify) 127c39f472eSBen Skeggs { 128c39f472eSBen Skeggs struct nvkm_gpio_ntfy_req *req = data; 129c39f472eSBen Skeggs if (!WARN_ON(size != sizeof(*req))) { 130c39f472eSBen Skeggs notify->size = sizeof(struct nvkm_gpio_ntfy_rep); 131c39f472eSBen Skeggs notify->types = req->mask; 132c39f472eSBen Skeggs notify->index = req->line; 133c39f472eSBen Skeggs return 0; 134c39f472eSBen Skeggs } 135c39f472eSBen Skeggs return -EINVAL; 136c39f472eSBen Skeggs } 137c39f472eSBen Skeggs 138c39f472eSBen Skeggs static void 139c39f472eSBen Skeggs nouveau_gpio_intr(struct nouveau_subdev *subdev) 140c39f472eSBen Skeggs { 141c39f472eSBen Skeggs struct nouveau_gpio *gpio = nouveau_gpio(subdev); 142c39f472eSBen Skeggs const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 143c39f472eSBen Skeggs u32 hi, lo, i; 144c39f472eSBen Skeggs 145c39f472eSBen Skeggs impl->intr_stat(gpio, &hi, &lo); 146c39f472eSBen Skeggs 147c39f472eSBen Skeggs for (i = 0; (hi | lo) && i < impl->lines; i++) { 148c39f472eSBen Skeggs struct nvkm_gpio_ntfy_rep rep = { 149c39f472eSBen Skeggs .mask = (NVKM_GPIO_HI * !!(hi & (1 << i))) | 150c39f472eSBen Skeggs (NVKM_GPIO_LO * !!(lo & (1 << i))), 151c39f472eSBen Skeggs }; 152c39f472eSBen Skeggs nvkm_event_send(&gpio->event, rep.mask, i, &rep, sizeof(rep)); 153c39f472eSBen Skeggs } 154c39f472eSBen Skeggs } 155c39f472eSBen Skeggs 156c39f472eSBen Skeggs static const struct nvkm_event_func 157c39f472eSBen Skeggs nouveau_gpio_intr_func = { 158c39f472eSBen Skeggs .ctor = nouveau_gpio_intr_ctor, 159c39f472eSBen Skeggs .init = nouveau_gpio_intr_init, 160c39f472eSBen Skeggs .fini = nouveau_gpio_intr_fini, 161c39f472eSBen Skeggs }; 162c39f472eSBen Skeggs 163c39f472eSBen Skeggs int 164c39f472eSBen Skeggs _nouveau_gpio_fini(struct nouveau_object *object, bool suspend) 165c39f472eSBen Skeggs { 166c39f472eSBen Skeggs const struct nouveau_gpio_impl *impl = (void *)object->oclass; 167c39f472eSBen Skeggs struct nouveau_gpio *gpio = nouveau_gpio(object); 168c39f472eSBen Skeggs u32 mask = (1 << impl->lines) - 1; 169c39f472eSBen Skeggs 170c39f472eSBen Skeggs impl->intr_mask(gpio, NVKM_GPIO_TOGGLED, mask, 0); 171c39f472eSBen Skeggs impl->intr_stat(gpio, &mask, &mask); 172c39f472eSBen Skeggs 173c39f472eSBen Skeggs return nouveau_subdev_fini(&gpio->base, suspend); 174c39f472eSBen Skeggs } 175c39f472eSBen Skeggs 176c39f472eSBen Skeggs static struct dmi_system_id gpio_reset_ids[] = { 177c39f472eSBen Skeggs { 178c39f472eSBen Skeggs .ident = "Apple Macbook 10,1", 179c39f472eSBen Skeggs .matches = { 180c39f472eSBen Skeggs DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), 181c39f472eSBen Skeggs DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro10,1"), 182c39f472eSBen Skeggs } 183c39f472eSBen Skeggs }, 184c39f472eSBen Skeggs { } 185c39f472eSBen Skeggs }; 186c39f472eSBen Skeggs 187c39f472eSBen Skeggs int 188c39f472eSBen Skeggs _nouveau_gpio_init(struct nouveau_object *object) 189c39f472eSBen Skeggs { 190c39f472eSBen Skeggs struct nouveau_gpio *gpio = nouveau_gpio(object); 191c39f472eSBen Skeggs int ret; 192c39f472eSBen Skeggs 193c39f472eSBen Skeggs ret = nouveau_subdev_init(&gpio->base); 194c39f472eSBen Skeggs if (ret) 195c39f472eSBen Skeggs return ret; 196c39f472eSBen Skeggs 197c39f472eSBen Skeggs if (gpio->reset && dmi_check_system(gpio_reset_ids)) 198c39f472eSBen Skeggs gpio->reset(gpio, DCB_GPIO_UNUSED); 199c39f472eSBen Skeggs 200c39f472eSBen Skeggs return ret; 201c39f472eSBen Skeggs } 202c39f472eSBen Skeggs 203c39f472eSBen Skeggs void 204c39f472eSBen Skeggs _nouveau_gpio_dtor(struct nouveau_object *object) 205c39f472eSBen Skeggs { 206c39f472eSBen Skeggs struct nouveau_gpio *gpio = (void *)object; 207c39f472eSBen Skeggs nvkm_event_fini(&gpio->event); 208c39f472eSBen Skeggs nouveau_subdev_destroy(&gpio->base); 209c39f472eSBen Skeggs } 210c39f472eSBen Skeggs 211c39f472eSBen Skeggs int 212c39f472eSBen Skeggs nouveau_gpio_create_(struct nouveau_object *parent, 213c39f472eSBen Skeggs struct nouveau_object *engine, 214c39f472eSBen Skeggs struct nouveau_oclass *oclass, 215c39f472eSBen Skeggs int length, void **pobject) 216c39f472eSBen Skeggs { 217c39f472eSBen Skeggs const struct nouveau_gpio_impl *impl = (void *)oclass; 218c39f472eSBen Skeggs struct nouveau_gpio *gpio; 219c39f472eSBen Skeggs int ret; 220c39f472eSBen Skeggs 221c39f472eSBen Skeggs ret = nouveau_subdev_create_(parent, engine, oclass, 0, "GPIO", "gpio", 222c39f472eSBen Skeggs length, pobject); 223c39f472eSBen Skeggs gpio = *pobject; 224c39f472eSBen Skeggs if (ret) 225c39f472eSBen Skeggs return ret; 226c39f472eSBen Skeggs 227c39f472eSBen Skeggs gpio->find = nouveau_gpio_find; 228c39f472eSBen Skeggs gpio->set = nouveau_gpio_set; 229c39f472eSBen Skeggs gpio->get = nouveau_gpio_get; 230c39f472eSBen Skeggs gpio->reset = impl->reset; 231c39f472eSBen Skeggs 232c39f472eSBen Skeggs ret = nvkm_event_init(&nouveau_gpio_intr_func, 2, impl->lines, 233c39f472eSBen Skeggs &gpio->event); 234c39f472eSBen Skeggs if (ret) 235c39f472eSBen Skeggs return ret; 236c39f472eSBen Skeggs 237c39f472eSBen Skeggs nv_subdev(gpio)->intr = nouveau_gpio_intr; 238c39f472eSBen Skeggs return 0; 239c39f472eSBen Skeggs } 240c39f472eSBen Skeggs 241c39f472eSBen Skeggs int 242c39f472eSBen Skeggs _nouveau_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine, 243c39f472eSBen Skeggs struct nouveau_oclass *oclass, void *data, u32 size, 244c39f472eSBen Skeggs struct nouveau_object **pobject) 245c39f472eSBen Skeggs { 246c39f472eSBen Skeggs struct nouveau_gpio *gpio; 247c39f472eSBen Skeggs int ret; 248c39f472eSBen Skeggs 249c39f472eSBen Skeggs ret = nouveau_gpio_create(parent, engine, oclass, &gpio); 250c39f472eSBen Skeggs *pobject = nv_object(gpio); 251c39f472eSBen Skeggs if (ret) 252c39f472eSBen Skeggs return ret; 253c39f472eSBen Skeggs 254c39f472eSBen Skeggs return 0; 255c39f472eSBen Skeggs } 256