1 /* 2 * Copyright (C) 2009 Francisco Jerez. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * 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 OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 */ 26 #include "priv.h" 27 28 static int 29 nv10_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 } else 37 if (line < 10) { 38 line = (line - 2) * 4; 39 line = nvkm_rd32(device, 0x60081c) >> line; 40 return !!(line & 0x04); 41 } else 42 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 51 static int 52 nv10_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 } else 63 if (line < 10) { 64 line = (line - 2) * 4; 65 reg = 0x60081c; 66 mask = 0x00000003; 67 data = (dir << 1) | out; 68 } else 69 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 82 static void 83 nv10_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 93 static void 94 nv10_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 } 104 105 static const struct nvkm_gpio_func 106 nv10_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 }; 113 114 int 115 nv10_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