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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 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 | ||
fa531bc8 | 27 | #include "priv.h" |
6ee73861 | 28 | |
e0996aea BS |
29 | struct nv10_gpio_priv { |
30 | struct nouveau_gpio base; | |
31 | }; | |
32 | ||
33 | static int | |
34 | nv10_gpio_sense(struct nouveau_gpio *gpio, int line) | |
6ee73861 | 35 | { |
a0b25635 BS |
36 | if (line < 2) { |
37 | line = line * 16; | |
e0996aea | 38 | line = nv_rd32(gpio, 0x600818) >> line; |
a0b25635 BS |
39 | return !!(line & 0x0100); |
40 | } else | |
41 | if (line < 10) { | |
42 | line = (line - 2) * 4; | |
e0996aea | 43 | line = nv_rd32(gpio, 0x60081c) >> line; |
a0b25635 BS |
44 | return !!(line & 0x04); |
45 | } else | |
46 | if (line < 14) { | |
47 | line = (line - 10) * 4; | |
e0996aea | 48 | line = nv_rd32(gpio, 0x600850) >> line; |
a0b25635 BS |
49 | return !!(line & 0x04); |
50 | } | |
6ee73861 | 51 | |
a0b25635 | 52 | return -EINVAL; |
6ee73861 BS |
53 | } |
54 | ||
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55 | static int |
56 | nv10_gpio_drive(struct nouveau_gpio *gpio, int line, int dir, int out) | |
6ee73861 | 57 | { |
a0b25635 BS |
58 | u32 reg, mask, data; |
59 | ||
60 | if (line < 2) { | |
61 | line = line * 16; | |
e0996aea | 62 | reg = 0x600818; |
a0b25635 BS |
63 | mask = 0x00000011; |
64 | data = (dir << 4) | out; | |
65 | } else | |
66 | if (line < 10) { | |
67 | line = (line - 2) * 4; | |
e0996aea | 68 | reg = 0x60081c; |
b99da31e | 69 | mask = 0x00000003; |
a0b25635 BS |
70 | data = (dir << 1) | out; |
71 | } else | |
72 | if (line < 14) { | |
73 | line = (line - 10) * 4; | |
e0996aea | 74 | reg = 0x600850; |
a0b25635 BS |
75 | mask = 0x00000003; |
76 | data = (dir << 1) | out; | |
77 | } else { | |
78 | return -EINVAL; | |
79 | } | |
6ee73861 | 80 | |
e0996aea | 81 | nv_mask(gpio, reg, mask << line, data << line); |
6ee73861 BS |
82 | return 0; |
83 | } | |
47e5d5cb | 84 | |
47e5d5cb | 85 | static void |
e0996aea | 86 | nv10_gpio_intr(struct nouveau_subdev *subdev) |
47e5d5cb | 87 | { |
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88 | struct nv10_gpio_priv *priv = (void *)subdev; |
89 | u32 intr = nv_rd32(priv, 0x001104); | |
47e5d5cb BS |
90 | u32 hi = (intr & 0x0000ffff) >> 0; |
91 | u32 lo = (intr & 0xffff0000) >> 16; | |
4f47643d | 92 | int i; |
47e5d5cb | 93 | |
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94 | for (i = 0; (hi | lo) && i < 32; i++) { |
95 | if ((hi | lo) & (1 << i)) | |
8e8832e8 | 96 | nouveau_event_trigger(priv->base.events, 1, i); |
4f47643d | 97 | } |
47e5d5cb | 98 | |
e0996aea | 99 | nv_wr32(priv, 0x001104, intr); |
47e5d5cb BS |
100 | } |
101 | ||
4f47643d BS |
102 | static void |
103 | nv10_gpio_intr_enable(struct nouveau_event *event, int line) | |
104 | { | |
105 | nv_wr32(event->priv, 0x001104, 0x00010001 << line); | |
106 | nv_mask(event->priv, 0x001144, 0x00010001 << line, 0x00010001 << line); | |
107 | } | |
108 | ||
109 | static void | |
110 | nv10_gpio_intr_disable(struct nouveau_event *event, int line) | |
111 | { | |
112 | nv_wr32(event->priv, 0x001104, 0x00010001 << line); | |
113 | nv_mask(event->priv, 0x001144, 0x00010001 << line, 0x00000000); | |
114 | } | |
115 | ||
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116 | static int |
117 | nv10_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine, | |
118 | struct nouveau_oclass *oclass, void *data, u32 size, | |
119 | struct nouveau_object **pobject) | |
47e5d5cb | 120 | { |
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121 | struct nv10_gpio_priv *priv; |
122 | int ret; | |
123 | ||
7356859a | 124 | ret = nouveau_gpio_create(parent, engine, oclass, &priv); |
e0996aea BS |
125 | *pobject = nv_object(priv); |
126 | if (ret) | |
127 | return ret; | |
128 | ||
129 | priv->base.drive = nv10_gpio_drive; | |
130 | priv->base.sense = nv10_gpio_sense; | |
4f47643d BS |
131 | priv->base.events->priv = priv; |
132 | priv->base.events->enable = nv10_gpio_intr_enable; | |
133 | priv->base.events->disable = nv10_gpio_intr_disable; | |
e0996aea | 134 | nv_subdev(priv)->intr = nv10_gpio_intr; |
47e5d5cb BS |
135 | return 0; |
136 | } | |
137 | ||
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138 | static void |
139 | nv10_gpio_dtor(struct nouveau_object *object) | |
47e5d5cb | 140 | { |
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141 | struct nv10_gpio_priv *priv = (void *)object; |
142 | nouveau_gpio_destroy(&priv->base); | |
47e5d5cb | 143 | } |
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144 | |
145 | static int | |
146 | nv10_gpio_init(struct nouveau_object *object) | |
147 | { | |
148 | struct nv10_gpio_priv *priv = (void *)object; | |
149 | int ret; | |
150 | ||
151 | ret = nouveau_gpio_init(&priv->base); | |
152 | if (ret) | |
153 | return ret; | |
154 | ||
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155 | nv_wr32(priv, 0x001144, 0x00000000); |
156 | nv_wr32(priv, 0x001104, 0xffffffff); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static int | |
161 | nv10_gpio_fini(struct nouveau_object *object, bool suspend) | |
162 | { | |
163 | struct nv10_gpio_priv *priv = (void *)object; | |
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164 | nv_wr32(priv, 0x001144, 0x00000000); |
165 | return nouveau_gpio_fini(&priv->base, suspend); | |
166 | } | |
167 | ||
d93174ec | 168 | struct nouveau_oclass * |
7356859a BS |
169 | nv10_gpio_oclass = &(struct nouveau_gpio_impl) { |
170 | .base.handle = NV_SUBDEV(GPIO, 0x10), | |
171 | .base.ofuncs = &(struct nouveau_ofuncs) { | |
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172 | .ctor = nv10_gpio_ctor, |
173 | .dtor = nv10_gpio_dtor, | |
174 | .init = nv10_gpio_init, | |
175 | .fini = nv10_gpio_fini, | |
176 | }, | |
7356859a BS |
177 | .lines = 16, |
178 | }.base; |