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 264e7659fcSBen Skeggs #include <core/notify.h> 274e7659fcSBen Skeggs 28c39f472eSBen Skeggs static int 294e7659fcSBen Skeggs nvkm_gpio_drive(struct nvkm_gpio *gpio, int idx, int line, int dir, int out) 30c39f472eSBen Skeggs { 314e7659fcSBen Skeggs const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 32c39f472eSBen Skeggs return impl->drive ? impl->drive(gpio, line, dir, out) : -ENODEV; 33c39f472eSBen Skeggs } 34c39f472eSBen Skeggs 35c39f472eSBen Skeggs static int 364e7659fcSBen Skeggs nvkm_gpio_sense(struct nvkm_gpio *gpio, int idx, int line) 37c39f472eSBen Skeggs { 384e7659fcSBen Skeggs const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 39c39f472eSBen Skeggs return impl->sense ? impl->sense(gpio, line) : -ENODEV; 40c39f472eSBen Skeggs } 41c39f472eSBen Skeggs 42c39f472eSBen Skeggs static int 434e7659fcSBen Skeggs nvkm_gpio_find(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line, 44c39f472eSBen Skeggs struct dcb_gpio_func *func) 45c39f472eSBen Skeggs { 46e7d65181SBen Skeggs struct nvkm_device *device = gpio->subdev.device; 474e7659fcSBen Skeggs struct nvkm_bios *bios = nvkm_bios(gpio); 48c39f472eSBen Skeggs u8 ver, len; 49c39f472eSBen Skeggs u16 data; 50c39f472eSBen Skeggs 51c39f472eSBen Skeggs if (line == 0xff && tag == 0xff) 52c39f472eSBen Skeggs return -EINVAL; 53c39f472eSBen Skeggs 54c39f472eSBen Skeggs data = dcb_gpio_match(bios, idx, tag, line, &ver, &len, func); 55c39f472eSBen Skeggs if (data) 56c39f472eSBen Skeggs return 0; 57c39f472eSBen Skeggs 58c39f472eSBen Skeggs /* Apple iMac G4 NV18 */ 59d351b856SBen Skeggs if (nv_device_match(device, 0x0189, 0x10de, 0x0010)) { 60c39f472eSBen Skeggs if (tag == DCB_GPIO_TVDAC0) { 61c39f472eSBen Skeggs *func = (struct dcb_gpio_func) { 62c39f472eSBen Skeggs .func = DCB_GPIO_TVDAC0, 63c39f472eSBen Skeggs .line = 4, 64c39f472eSBen Skeggs .log[0] = 0, 65c39f472eSBen Skeggs .log[1] = 1, 66c39f472eSBen Skeggs }; 67c39f472eSBen Skeggs return 0; 68c39f472eSBen Skeggs } 69c39f472eSBen Skeggs } 70c39f472eSBen Skeggs 71c39f472eSBen Skeggs return -ENOENT; 72c39f472eSBen Skeggs } 73c39f472eSBen Skeggs 74c39f472eSBen Skeggs static int 754e7659fcSBen Skeggs nvkm_gpio_set(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line, int state) 76c39f472eSBen Skeggs { 77c39f472eSBen Skeggs struct dcb_gpio_func func; 78c39f472eSBen Skeggs int ret; 79c39f472eSBen Skeggs 804e7659fcSBen Skeggs ret = nvkm_gpio_find(gpio, idx, tag, line, &func); 81c39f472eSBen Skeggs if (ret == 0) { 82c39f472eSBen Skeggs int dir = !!(func.log[state] & 0x02); 83c39f472eSBen Skeggs int out = !!(func.log[state] & 0x01); 844e7659fcSBen Skeggs ret = nvkm_gpio_drive(gpio, idx, func.line, dir, out); 85c39f472eSBen Skeggs } 86c39f472eSBen Skeggs 87c39f472eSBen Skeggs return ret; 88c39f472eSBen Skeggs } 89c39f472eSBen Skeggs 90c39f472eSBen Skeggs static int 914e7659fcSBen Skeggs nvkm_gpio_get(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line) 92c39f472eSBen Skeggs { 93c39f472eSBen Skeggs struct dcb_gpio_func func; 94c39f472eSBen Skeggs int ret; 95c39f472eSBen Skeggs 964e7659fcSBen Skeggs ret = nvkm_gpio_find(gpio, idx, tag, line, &func); 97c39f472eSBen Skeggs if (ret == 0) { 984e7659fcSBen Skeggs ret = nvkm_gpio_sense(gpio, idx, func.line); 99c39f472eSBen Skeggs if (ret >= 0) 100c39f472eSBen Skeggs ret = (ret == (func.log[1] & 1)); 101c39f472eSBen Skeggs } 102c39f472eSBen Skeggs 103c39f472eSBen Skeggs return ret; 104c39f472eSBen Skeggs } 105c39f472eSBen Skeggs 106c39f472eSBen Skeggs static void 1074e7659fcSBen Skeggs nvkm_gpio_intr_fini(struct nvkm_event *event, int type, int index) 108c39f472eSBen Skeggs { 1094e7659fcSBen Skeggs struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event); 1104e7659fcSBen Skeggs const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 111c39f472eSBen Skeggs impl->intr_mask(gpio, type, 1 << index, 0); 112c39f472eSBen Skeggs } 113c39f472eSBen Skeggs 114c39f472eSBen Skeggs static void 1154e7659fcSBen Skeggs nvkm_gpio_intr_init(struct nvkm_event *event, int type, int index) 116c39f472eSBen Skeggs { 1174e7659fcSBen Skeggs struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event); 1184e7659fcSBen Skeggs const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 119c39f472eSBen Skeggs impl->intr_mask(gpio, type, 1 << index, 1 << index); 120c39f472eSBen Skeggs } 121c39f472eSBen Skeggs 122c39f472eSBen Skeggs static int 1234e7659fcSBen Skeggs nvkm_gpio_intr_ctor(struct nvkm_object *object, void *data, u32 size, 124c39f472eSBen Skeggs struct nvkm_notify *notify) 125c39f472eSBen Skeggs { 126c39f472eSBen Skeggs struct nvkm_gpio_ntfy_req *req = data; 127c39f472eSBen Skeggs if (!WARN_ON(size != sizeof(*req))) { 128c39f472eSBen Skeggs notify->size = sizeof(struct nvkm_gpio_ntfy_rep); 129c39f472eSBen Skeggs notify->types = req->mask; 130c39f472eSBen Skeggs notify->index = req->line; 131c39f472eSBen Skeggs return 0; 132c39f472eSBen Skeggs } 133c39f472eSBen Skeggs return -EINVAL; 134c39f472eSBen Skeggs } 135c39f472eSBen Skeggs 136c39f472eSBen Skeggs static void 1374e7659fcSBen Skeggs nvkm_gpio_intr(struct nvkm_subdev *subdev) 138c39f472eSBen Skeggs { 1394e7659fcSBen Skeggs struct nvkm_gpio *gpio = nvkm_gpio(subdev); 1404e7659fcSBen Skeggs const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass; 141c39f472eSBen Skeggs u32 hi, lo, i; 142c39f472eSBen Skeggs 143c39f472eSBen Skeggs impl->intr_stat(gpio, &hi, &lo); 144c39f472eSBen Skeggs 145c39f472eSBen Skeggs for (i = 0; (hi | lo) && i < impl->lines; i++) { 146c39f472eSBen Skeggs struct nvkm_gpio_ntfy_rep rep = { 147c39f472eSBen Skeggs .mask = (NVKM_GPIO_HI * !!(hi & (1 << i))) | 148c39f472eSBen Skeggs (NVKM_GPIO_LO * !!(lo & (1 << i))), 149c39f472eSBen Skeggs }; 150c39f472eSBen Skeggs nvkm_event_send(&gpio->event, rep.mask, i, &rep, sizeof(rep)); 151c39f472eSBen Skeggs } 152c39f472eSBen Skeggs } 153c39f472eSBen Skeggs 154c39f472eSBen Skeggs static const struct nvkm_event_func 1554e7659fcSBen Skeggs nvkm_gpio_intr_func = { 1564e7659fcSBen Skeggs .ctor = nvkm_gpio_intr_ctor, 1574e7659fcSBen Skeggs .init = nvkm_gpio_intr_init, 1584e7659fcSBen Skeggs .fini = nvkm_gpio_intr_fini, 159c39f472eSBen Skeggs }; 160c39f472eSBen Skeggs 161c39f472eSBen Skeggs int 1624e7659fcSBen Skeggs _nvkm_gpio_fini(struct nvkm_object *object, bool suspend) 163c39f472eSBen Skeggs { 1644e7659fcSBen Skeggs const struct nvkm_gpio_impl *impl = (void *)object->oclass; 1654e7659fcSBen Skeggs struct nvkm_gpio *gpio = nvkm_gpio(object); 166c39f472eSBen Skeggs u32 mask = (1 << impl->lines) - 1; 167c39f472eSBen Skeggs 168c39f472eSBen Skeggs impl->intr_mask(gpio, NVKM_GPIO_TOGGLED, mask, 0); 169c39f472eSBen Skeggs impl->intr_stat(gpio, &mask, &mask); 170c39f472eSBen Skeggs 171e7d65181SBen Skeggs return nvkm_subdev_fini(&gpio->subdev, suspend); 172c39f472eSBen Skeggs } 173c39f472eSBen Skeggs 174c39f472eSBen Skeggs static struct dmi_system_id gpio_reset_ids[] = { 175c39f472eSBen Skeggs { 176c39f472eSBen Skeggs .ident = "Apple Macbook 10,1", 177c39f472eSBen Skeggs .matches = { 178c39f472eSBen Skeggs DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), 179c39f472eSBen Skeggs DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro10,1"), 180c39f472eSBen Skeggs } 181c39f472eSBen Skeggs }, 182c39f472eSBen Skeggs { } 183c39f472eSBen Skeggs }; 184c39f472eSBen Skeggs 185c39f472eSBen Skeggs int 1864e7659fcSBen Skeggs _nvkm_gpio_init(struct nvkm_object *object) 187c39f472eSBen Skeggs { 1884e7659fcSBen Skeggs struct nvkm_gpio *gpio = nvkm_gpio(object); 189c39f472eSBen Skeggs int ret; 190c39f472eSBen Skeggs 191e7d65181SBen Skeggs ret = nvkm_subdev_init(&gpio->subdev); 192c39f472eSBen Skeggs if (ret) 193c39f472eSBen Skeggs return ret; 194c39f472eSBen Skeggs 195c39f472eSBen Skeggs if (gpio->reset && dmi_check_system(gpio_reset_ids)) 196c39f472eSBen Skeggs gpio->reset(gpio, DCB_GPIO_UNUSED); 197c39f472eSBen Skeggs 198c39f472eSBen Skeggs return ret; 199c39f472eSBen Skeggs } 200c39f472eSBen Skeggs 201c39f472eSBen Skeggs void 2024e7659fcSBen Skeggs _nvkm_gpio_dtor(struct nvkm_object *object) 203c39f472eSBen Skeggs { 2044e7659fcSBen Skeggs struct nvkm_gpio *gpio = (void *)object; 205c39f472eSBen Skeggs nvkm_event_fini(&gpio->event); 206e7d65181SBen Skeggs nvkm_subdev_destroy(&gpio->subdev); 207c39f472eSBen Skeggs } 208c39f472eSBen Skeggs 209c39f472eSBen Skeggs int 2104e7659fcSBen Skeggs nvkm_gpio_create_(struct nvkm_object *parent, struct nvkm_object *engine, 2114e7659fcSBen Skeggs struct nvkm_oclass *oclass, int length, void **pobject) 212c39f472eSBen Skeggs { 2134e7659fcSBen Skeggs const struct nvkm_gpio_impl *impl = (void *)oclass; 2144e7659fcSBen Skeggs struct nvkm_gpio *gpio; 215c39f472eSBen Skeggs int ret; 216c39f472eSBen Skeggs 2174e7659fcSBen Skeggs ret = nvkm_subdev_create_(parent, engine, oclass, 0, "GPIO", 2184e7659fcSBen Skeggs "gpio", length, pobject); 219c39f472eSBen Skeggs gpio = *pobject; 220c39f472eSBen Skeggs if (ret) 221c39f472eSBen Skeggs return ret; 222c39f472eSBen Skeggs 2234e7659fcSBen Skeggs gpio->find = nvkm_gpio_find; 2244e7659fcSBen Skeggs gpio->set = nvkm_gpio_set; 2254e7659fcSBen Skeggs gpio->get = nvkm_gpio_get; 226c39f472eSBen Skeggs gpio->reset = impl->reset; 227c39f472eSBen Skeggs 2284e7659fcSBen Skeggs ret = nvkm_event_init(&nvkm_gpio_intr_func, 2, impl->lines, 229c39f472eSBen Skeggs &gpio->event); 230c39f472eSBen Skeggs if (ret) 231c39f472eSBen Skeggs return ret; 232c39f472eSBen Skeggs 2334e7659fcSBen Skeggs nv_subdev(gpio)->intr = nvkm_gpio_intr; 234c39f472eSBen Skeggs return 0; 235c39f472eSBen Skeggs } 236c39f472eSBen Skeggs 237c39f472eSBen Skeggs int 2384e7659fcSBen Skeggs _nvkm_gpio_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 2394e7659fcSBen Skeggs struct nvkm_oclass *oclass, void *data, u32 size, 2404e7659fcSBen Skeggs struct nvkm_object **pobject) 241c39f472eSBen Skeggs { 2424e7659fcSBen Skeggs struct nvkm_gpio *gpio; 243c39f472eSBen Skeggs int ret; 244c39f472eSBen Skeggs 2454e7659fcSBen Skeggs ret = nvkm_gpio_create(parent, engine, oclass, &gpio); 246c39f472eSBen Skeggs *pobject = nv_object(gpio); 247c39f472eSBen Skeggs if (ret) 248c39f472eSBen Skeggs return ret; 249c39f472eSBen Skeggs 250c39f472eSBen Skeggs return 0; 251c39f472eSBen Skeggs } 252