Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 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 | |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame^] | 25 | #include "priv.h" |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 26 | |
| 27 | struct nvd0_gpio_priv { |
| 28 | struct nouveau_gpio base; |
| 29 | }; |
| 30 | |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame^] | 31 | void |
Ben Skeggs | 1ed7316 | 2012-12-07 13:46:52 +1000 | [diff] [blame] | 32 | nvd0_gpio_reset(struct nouveau_gpio *gpio, u8 match) |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 33 | { |
| 34 | struct nouveau_bios *bios = nouveau_bios(gpio); |
| 35 | struct nvd0_gpio_priv *priv = (void *)gpio; |
Ben Skeggs | d2bcea6 | 2012-12-07 10:09:17 +1000 | [diff] [blame] | 36 | u8 ver, len; |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 37 | u16 entry; |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 38 | int ent = -1; |
| 39 | |
Ben Skeggs | d2bcea6 | 2012-12-07 10:09:17 +1000 | [diff] [blame] | 40 | while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) { |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 41 | u32 data = nv_ro32(bios, entry); |
| 42 | u8 line = (data & 0x0000003f); |
| 43 | u8 defs = !!(data & 0x00000080); |
| 44 | u8 func = (data & 0x0000ff00) >> 8; |
| 45 | u8 unk0 = (data & 0x00ff0000) >> 16; |
| 46 | u8 unk1 = (data & 0x1f000000) >> 24; |
| 47 | |
Ben Skeggs | 1ed7316 | 2012-12-07 13:46:52 +1000 | [diff] [blame] | 48 | if ( func == DCB_GPIO_UNUSED || |
| 49 | (match != DCB_GPIO_UNUSED && match != func)) |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 50 | continue; |
| 51 | |
| 52 | gpio->set(gpio, 0, func, line, defs); |
| 53 | |
| 54 | nv_mask(priv, 0x00d610 + (line * 4), 0xff, unk0); |
| 55 | if (unk1--) |
| 56 | nv_mask(priv, 0x00d740 + (unk1 * 4), 0xff, line); |
| 57 | } |
| 58 | } |
| 59 | |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame^] | 60 | int |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 61 | nvd0_gpio_drive(struct nouveau_gpio *gpio, int line, int dir, int out) |
| 62 | { |
| 63 | u32 data = ((dir ^ 1) << 13) | (out << 12); |
| 64 | nv_mask(gpio, 0x00d610 + (line * 4), 0x00003000, data); |
| 65 | nv_mask(gpio, 0x00d604, 0x00000001, 0x00000001); /* update? */ |
| 66 | return 0; |
| 67 | } |
| 68 | |
Ben Skeggs | fa531bc | 2013-02-13 13:34:39 +1000 | [diff] [blame^] | 69 | int |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 70 | nvd0_gpio_sense(struct nouveau_gpio *gpio, int line) |
| 71 | { |
| 72 | return !!(nv_rd32(gpio, 0x00d610 + (line * 4)) & 0x00004000); |
| 73 | } |
| 74 | |
| 75 | static int |
| 76 | nvd0_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 77 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 78 | struct nouveau_object **pobject) |
| 79 | { |
| 80 | struct nvd0_gpio_priv *priv; |
| 81 | int ret; |
| 82 | |
Ben Skeggs | 0f08006 | 2013-02-04 07:08:20 +1000 | [diff] [blame] | 83 | ret = nouveau_gpio_create(parent, engine, oclass, 32, &priv); |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 84 | *pobject = nv_object(priv); |
| 85 | if (ret) |
| 86 | return ret; |
| 87 | |
| 88 | priv->base.reset = nvd0_gpio_reset; |
| 89 | priv->base.drive = nvd0_gpio_drive; |
| 90 | priv->base.sense = nvd0_gpio_sense; |
Ben Skeggs | 4f47643 | 2013-02-03 12:56:16 +1000 | [diff] [blame] | 91 | priv->base.events->priv = priv; |
| 92 | priv->base.events->enable = nv50_gpio_intr_enable; |
| 93 | priv->base.events->disable = nv50_gpio_intr_disable; |
Ben Skeggs | e0996ae | 2012-07-10 12:20:17 +1000 | [diff] [blame] | 94 | nv_subdev(priv)->intr = nv50_gpio_intr; |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | struct nouveau_oclass |
| 99 | nvd0_gpio_oclass = { |
| 100 | .handle = NV_SUBDEV(GPIO, 0xd0), |
| 101 | .ofuncs = &(struct nouveau_ofuncs) { |
| 102 | .ctor = nvd0_gpio_ctor, |
| 103 | .dtor = nv50_gpio_dtor, |
| 104 | .init = nv50_gpio_init, |
| 105 | .fini = nv50_gpio_fini, |
| 106 | }, |
| 107 | }; |