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 void 27 g94_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo) 28 { 29 struct nvkm_device *device = gpio->subdev.device; 30 u32 intr0 = nvkm_rd32(device, 0x00e054); 31 u32 intr1 = nvkm_rd32(device, 0x00e074); 32 u32 stat0 = nvkm_rd32(device, 0x00e050) & intr0; 33 u32 stat1 = nvkm_rd32(device, 0x00e070) & intr1; 34 *lo = (stat1 & 0xffff0000) | (stat0 >> 16); 35 *hi = (stat1 << 16) | (stat0 & 0x0000ffff); 36 nvkm_wr32(device, 0x00e054, intr0); 37 nvkm_wr32(device, 0x00e074, intr1); 38 } 39 40 void 41 g94_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data) 42 { 43 struct nvkm_device *device = gpio->subdev.device; 44 u32 inte0 = nvkm_rd32(device, 0x00e050); 45 u32 inte1 = nvkm_rd32(device, 0x00e070); 46 if (type & NVKM_GPIO_LO) 47 inte0 = (inte0 & ~(mask << 16)) | (data << 16); 48 if (type & NVKM_GPIO_HI) 49 inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff); 50 mask >>= 16; 51 data >>= 16; 52 if (type & NVKM_GPIO_LO) 53 inte1 = (inte1 & ~(mask << 16)) | (data << 16); 54 if (type & NVKM_GPIO_HI) 55 inte1 = (inte1 & ~mask) | data; 56 nvkm_wr32(device, 0x00e050, inte0); 57 nvkm_wr32(device, 0x00e070, inte1); 58 } 59 60 static const struct nvkm_gpio_func 61 g94_gpio = { 62 .lines = 32, 63 .intr_stat = g94_gpio_intr_stat, 64 .intr_mask = g94_gpio_intr_mask, 65 .drive = nv50_gpio_drive, 66 .sense = nv50_gpio_sense, 67 .reset = nv50_gpio_reset, 68 }; 69 70 int 71 g94_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 72 struct nvkm_gpio **pgpio) 73 { 74 return nvkm_gpio_new_(&g94_gpio, device, type, inst, pgpio); 75 } 76