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1/*2 * Copyright (C) 2009 Francisco Jerez.3 * All Rights Reserved.4 *5 * Permission is hereby granted, free of charge, to any person obtaining6 * a copy of this software and associated documentation files (the7 * "Software"), to deal in the Software without restriction, including8 * without limitation the rights to use, copy, modify, merge, publish,9 * distribute, sublicense, and/or sell copies of the Software, and to10 * permit persons to whom the Software is furnished to do so, subject to11 * the following conditions:12 *13 * The above copyright notice and this permission notice (including the14 * next paragraph) shall be included in all copies or substantial15 * portions of the Software.16 *17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.24 *25 */26#include "priv.h"27 28static int29nv10_gpio_sense(struct nvkm_gpio *gpio, int line)30{31 struct nvkm_device *device = gpio->subdev.device;32 if (line < 2) {33 line = line * 16;34 line = nvkm_rd32(device, 0x600818) >> line;35 return !!(line & 0x0100);36 } else37 if (line < 10) {38 line = (line - 2) * 4;39 line = nvkm_rd32(device, 0x60081c) >> line;40 return !!(line & 0x04);41 } else42 if (line < 14) {43 line = (line - 10) * 4;44 line = nvkm_rd32(device, 0x600850) >> line;45 return !!(line & 0x04);46 }47 48 return -EINVAL;49}50 51static int52nv10_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out)53{54 struct nvkm_device *device = gpio->subdev.device;55 u32 reg, mask, data;56 57 if (line < 2) {58 line = line * 16;59 reg = 0x600818;60 mask = 0x00000011;61 data = (dir << 4) | out;62 } else63 if (line < 10) {64 line = (line - 2) * 4;65 reg = 0x60081c;66 mask = 0x00000003;67 data = (dir << 1) | out;68 } else69 if (line < 14) {70 line = (line - 10) * 4;71 reg = 0x600850;72 mask = 0x00000003;73 data = (dir << 1) | out;74 } else {75 return -EINVAL;76 }77 78 nvkm_mask(device, reg, mask << line, data << line);79 return 0;80}81 82static void83nv10_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)84{85 struct nvkm_device *device = gpio->subdev.device;86 u32 intr = nvkm_rd32(device, 0x001104);87 u32 stat = nvkm_rd32(device, 0x001144) & intr;88 *lo = (stat & 0xffff0000) >> 16;89 *hi = (stat & 0x0000ffff);90 nvkm_wr32(device, 0x001104, intr);91}92 93static void94nv10_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)95{96 struct nvkm_device *device = gpio->subdev.device;97 u32 inte = nvkm_rd32(device, 0x001144);98 if (type & NVKM_GPIO_LO)99 inte = (inte & ~(mask << 16)) | (data << 16);100 if (type & NVKM_GPIO_HI)101 inte = (inte & ~mask) | data;102 nvkm_wr32(device, 0x001144, inte);103}104 105static const struct nvkm_gpio_func106nv10_gpio = {107 .lines = 16,108 .intr_stat = nv10_gpio_intr_stat,109 .intr_mask = nv10_gpio_intr_mask,110 .drive = nv10_gpio_drive,111 .sense = nv10_gpio_sense,112};113 114int115nv10_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,116 struct nvkm_gpio **pgpio)117{118 return nvkm_gpio_new_(&nv10_gpio, device, type, inst, pgpio);119}120