1 /* 2 * Copyright 2012 Nouveau Community 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: Martin Peres <martin.peres@labri.fr> 23 * Ben Skeggs 24 */ 25 #include "priv.h" 26 27 #include <subdev/gpio.h> 28 29 #include <subdev/gpio.h> 30 31 static void 32 nv04_bus_intr(struct nvkm_bus *bus) 33 { 34 struct nvkm_subdev *subdev = &bus->subdev; 35 struct nvkm_device *device = subdev->device; 36 u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140); 37 38 if (stat & 0x00000001) { 39 nvkm_error(subdev, "BUS ERROR\n"); 40 stat &= ~0x00000001; 41 nvkm_wr32(device, 0x001100, 0x00000001); 42 } 43 44 if (stat & 0x00000110) { 45 struct nvkm_gpio *gpio = device->gpio; 46 if (gpio) 47 nvkm_subdev_intr(&gpio->subdev); 48 stat &= ~0x00000110; 49 nvkm_wr32(device, 0x001100, 0x00000110); 50 } 51 52 if (stat) { 53 nvkm_error(subdev, "intr %08x\n", stat); 54 nvkm_mask(device, 0x001140, stat, 0x00000000); 55 } 56 } 57 58 static void 59 nv04_bus_init(struct nvkm_bus *bus) 60 { 61 struct nvkm_device *device = bus->subdev.device; 62 nvkm_wr32(device, 0x001100, 0xffffffff); 63 nvkm_wr32(device, 0x001140, 0x00000111); 64 } 65 66 static const struct nvkm_bus_func 67 nv04_bus = { 68 .init = nv04_bus_init, 69 .intr = nv04_bus_intr, 70 }; 71 72 int 73 nv04_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus) 74 { 75 return nvkm_bus_new_(&nv04_bus, device, index, pbus); 76 } 77