1 /* 2 * Copyright 2012 Red Hat Inc. 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 */ 24 #include "priv.h" 25 26 #include <subdev/gsp.h> 27 28 static void 29 gk104_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo) 30 { 31 struct nvkm_device *device = gpio->subdev.device; 32 u32 intr0 = nvkm_rd32(device, 0x00dc00); 33 u32 intr1 = nvkm_rd32(device, 0x00dc80); 34 u32 stat0 = nvkm_rd32(device, 0x00dc08) & intr0; 35 u32 stat1 = nvkm_rd32(device, 0x00dc88) & intr1; 36 *lo = (stat1 & 0xffff0000) | (stat0 >> 16); 37 *hi = (stat1 << 16) | (stat0 & 0x0000ffff); 38 nvkm_wr32(device, 0x00dc00, intr0); 39 nvkm_wr32(device, 0x00dc80, intr1); 40 } 41 42 static void 43 gk104_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data) 44 { 45 struct nvkm_device *device = gpio->subdev.device; 46 u32 inte0 = nvkm_rd32(device, 0x00dc08); 47 u32 inte1 = nvkm_rd32(device, 0x00dc88); 48 if (type & NVKM_GPIO_LO) 49 inte0 = (inte0 & ~(mask << 16)) | (data << 16); 50 if (type & NVKM_GPIO_HI) 51 inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff); 52 mask >>= 16; 53 data >>= 16; 54 if (type & NVKM_GPIO_LO) 55 inte1 = (inte1 & ~(mask << 16)) | (data << 16); 56 if (type & NVKM_GPIO_HI) 57 inte1 = (inte1 & ~mask) | data; 58 nvkm_wr32(device, 0x00dc08, inte0); 59 nvkm_wr32(device, 0x00dc88, inte1); 60 } 61 62 static const struct nvkm_gpio_func 63 gk104_gpio = { 64 .lines = 32, 65 .intr_stat = gk104_gpio_intr_stat, 66 .intr_mask = gk104_gpio_intr_mask, 67 .drive = gf119_gpio_drive, 68 .sense = gf119_gpio_sense, 69 .reset = gf119_gpio_reset, 70 }; 71 72 int 73 gk104_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 74 struct nvkm_gpio **pgpio) 75 { 76 if (nvkm_gsp_rm(device->gsp)) 77 return -ENODEV; 78 79 return nvkm_gpio_new_(&gk104_gpio, device, type, inst, pgpio); 80 } 81