1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
|
/*
* Copyright 2011 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include "priv.h"
#include <core/notify.h>
static int
nvkm_gpio_drive(struct nvkm_gpio *gpio, int idx, int line, int dir, int out)
{
const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
return impl->drive ? impl->drive(gpio, line, dir, out) : -ENODEV;
}
static int
nvkm_gpio_sense(struct nvkm_gpio *gpio, int idx, int line)
{
const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
return impl->sense ? impl->sense(gpio, line) : -ENODEV;
}
static int
nvkm_gpio_find(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line,
struct dcb_gpio_func *func)
{
struct nvkm_device *device = gpio->subdev.device;
struct nvkm_bios *bios = nvkm_bios(gpio);
u8 ver, len;
u16 data;
if (line == 0xff && tag == 0xff)
return -EINVAL;
data = dcb_gpio_match(bios, idx, tag, line, &ver, &len, func);
if (data)
return 0;
/* Apple iMac G4 NV18 */
if (nv_device_match(device, 0x0189, 0x10de, 0x0010)) {
if (tag == DCB_GPIO_TVDAC0) {
*func = (struct dcb_gpio_func) {
.func = DCB_GPIO_TVDAC0,
.line = 4,
.log[0] = 0,
.log[1] = 1,
};
return 0;
}
}
return -ENOENT;
}
static int
nvkm_gpio_set(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line, int state)
{
struct dcb_gpio_func func;
int ret;
ret = nvkm_gpio_find(gpio, idx, tag, line, &func);
if (ret == 0) {
int dir = !!(func.log[state] & 0x02);
int out = !!(func.log[state] & 0x01);
ret = nvkm_gpio_drive(gpio, idx, func.line, dir, out);
}
return ret;
}
static int
nvkm_gpio_get(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line)
{
struct dcb_gpio_func func;
int ret;
ret = nvkm_gpio_find(gpio, idx, tag, line, &func);
if (ret == 0) {
ret = nvkm_gpio_sense(gpio, idx, func.line);
if (ret >= 0)
ret = (ret == (func.log[1] & 1));
}
return ret;
}
static void
nvkm_gpio_intr_fini(struct nvkm_event *event, int type, int index)
{
struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event);
const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
impl->intr_mask(gpio, type, 1 << index, 0);
}
static void
nvkm_gpio_intr_init(struct nvkm_event *event, int type, int index)
{
struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event);
const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
impl->intr_mask(gpio, type, 1 << index, 1 << index);
}
static int
nvkm_gpio_intr_ctor(struct nvkm_object *object, void *data, u32 size,
struct nvkm_notify *notify)
{
struct nvkm_gpio_ntfy_req *req = data;
if (!WARN_ON(size != sizeof(*req))) {
notify->size = sizeof(struct nvkm_gpio_ntfy_rep);
notify->types = req->mask;
notify->index = req->line;
return 0;
}
return -EINVAL;
}
static void
nvkm_gpio_intr(struct nvkm_subdev *subdev)
{
struct nvkm_gpio *gpio = nvkm_gpio(subdev);
const struct nvkm_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
u32 hi, lo, i;
impl->intr_stat(gpio, &hi, &lo);
for (i = 0; (hi | lo) && i < impl->lines; i++) {
struct nvkm_gpio_ntfy_rep rep = {
.mask = (NVKM_GPIO_HI * !!(hi & (1 << i))) |
(NVKM_GPIO_LO * !!(lo & (1 << i))),
};
nvkm_event_send(&gpio->event, rep.mask, i, &rep, sizeof(rep));
}
}
static const struct nvkm_event_func
nvkm_gpio_intr_func = {
.ctor = nvkm_gpio_intr_ctor,
.init = nvkm_gpio_intr_init,
.fini = nvkm_gpio_intr_fini,
};
int
_nvkm_gpio_fini(struct nvkm_object *object, bool suspend)
{
const struct nvkm_gpio_impl *impl = (void *)object->oclass;
struct nvkm_gpio *gpio = nvkm_gpio(object);
u32 mask = (1 << impl->lines) - 1;
impl->intr_mask(gpio, NVKM_GPIO_TOGGLED, mask, 0);
impl->intr_stat(gpio, &mask, &mask);
return nvkm_subdev_fini_old(&gpio->subdev, suspend);
}
static struct dmi_system_id gpio_reset_ids[] = {
{
.ident = "Apple Macbook 10,1",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro10,1"),
}
},
{ }
};
int
_nvkm_gpio_init(struct nvkm_object *object)
{
struct nvkm_gpio *gpio = nvkm_gpio(object);
int ret;
ret = nvkm_subdev_init_old(&gpio->subdev);
if (ret)
return ret;
if (gpio->reset && dmi_check_system(gpio_reset_ids))
gpio->reset(gpio, DCB_GPIO_UNUSED);
return ret;
}
void
_nvkm_gpio_dtor(struct nvkm_object *object)
{
struct nvkm_gpio *gpio = (void *)object;
nvkm_event_fini(&gpio->event);
nvkm_subdev_destroy(&gpio->subdev);
}
int
nvkm_gpio_create_(struct nvkm_object *parent, struct nvkm_object *engine,
struct nvkm_oclass *oclass, int length, void **pobject)
{
const struct nvkm_gpio_impl *impl = (void *)oclass;
struct nvkm_gpio *gpio;
int ret;
ret = nvkm_subdev_create_(parent, engine, oclass, 0, "GPIO",
"gpio", length, pobject);
gpio = *pobject;
if (ret)
return ret;
gpio->find = nvkm_gpio_find;
gpio->set = nvkm_gpio_set;
gpio->get = nvkm_gpio_get;
gpio->reset = impl->reset;
ret = nvkm_event_init(&nvkm_gpio_intr_func, 2, impl->lines,
&gpio->event);
if (ret)
return ret;
nv_subdev(gpio)->intr = nvkm_gpio_intr;
return 0;
}
int
_nvkm_gpio_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
struct nvkm_gpio *gpio;
int ret;
ret = nvkm_gpio_create(parent, engine, oclass, &gpio);
*pobject = nv_object(gpio);
if (ret)
return ret;
return 0;
}
|
