2 * Copyright 2011 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
25 #include <subdev/bios.h>
26 #include <subdev/bios/gpio.h>
31 nouveau_gpio_drive(struct nouveau_gpio *gpio,
32 int idx, int line, int dir, int out)
34 const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
35 return impl->drive ? impl->drive(gpio, line, dir, out) : -ENODEV;
39 nouveau_gpio_sense(struct nouveau_gpio *gpio, int idx, int line)
41 const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
42 return impl->sense ? impl->sense(gpio, line) : -ENODEV;
46 nouveau_gpio_find(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line,
47 struct dcb_gpio_func *func)
49 struct nouveau_bios *bios = nouveau_bios(gpio);
53 if (line == 0xff && tag == 0xff)
56 data = dcb_gpio_match(bios, idx, tag, line, &ver, &len, func);
60 /* Apple iMac G4 NV18 */
61 if (nv_device_match(nv_object(gpio), 0x0189, 0x10de, 0x0010)) {
62 if (tag == DCB_GPIO_TVDAC0) {
63 *func = (struct dcb_gpio_func) {
64 .func = DCB_GPIO_TVDAC0,
77 nouveau_gpio_set(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, int state)
79 struct dcb_gpio_func func;
82 ret = nouveau_gpio_find(gpio, idx, tag, line, &func);
84 int dir = !!(func.log[state] & 0x02);
85 int out = !!(func.log[state] & 0x01);
86 ret = nouveau_gpio_drive(gpio, idx, func.line, dir, out);
93 nouveau_gpio_get(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line)
95 struct dcb_gpio_func func;
98 ret = nouveau_gpio_find(gpio, idx, tag, line, &func);
100 ret = nouveau_gpio_sense(gpio, idx, func.line);
102 ret = (ret == (func.log[1] & 1));
109 nouveau_gpio_intr_disable(struct nouveau_event *event, int type, int index)
111 struct nouveau_gpio *gpio = nouveau_gpio(event->priv);
112 const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
113 impl->intr_mask(gpio, type, 1 << index, 0);
117 nouveau_gpio_intr_enable(struct nouveau_event *event, int type, int index)
119 struct nouveau_gpio *gpio = nouveau_gpio(event->priv);
120 const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
121 impl->intr_mask(gpio, type, 1 << index, 1 << index);
125 nouveau_gpio_intr(struct nouveau_subdev *subdev)
127 struct nouveau_gpio *gpio = nouveau_gpio(subdev);
128 const struct nouveau_gpio_impl *impl = (void *)nv_object(gpio)->oclass;
131 impl->intr_stat(gpio, &hi, &lo);
133 for (i = 0; e = 0, (hi | lo) && i < impl->lines; i++) {
138 nouveau_event_trigger(gpio->events, e, i);
143 _nouveau_gpio_fini(struct nouveau_object *object, bool suspend)
145 const struct nouveau_gpio_impl *impl = (void *)object->oclass;
146 struct nouveau_gpio *gpio = nouveau_gpio(object);
147 u32 mask = (1 << impl->lines) - 1;
149 impl->intr_mask(gpio, NVKM_GPIO_TOGGLED, mask, 0);
150 impl->intr_stat(gpio, &mask, &mask);
152 return nouveau_subdev_fini(&gpio->base, suspend);
155 static struct dmi_system_id gpio_reset_ids[] = {
157 .ident = "Apple Macbook 10,1",
159 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
160 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro10,1"),
167 _nouveau_gpio_init(struct nouveau_object *object)
169 struct nouveau_gpio *gpio = nouveau_gpio(object);
172 ret = nouveau_subdev_init(&gpio->base);
176 if (gpio->reset && dmi_check_system(gpio_reset_ids))
177 gpio->reset(gpio, DCB_GPIO_UNUSED);
183 _nouveau_gpio_dtor(struct nouveau_object *object)
185 struct nouveau_gpio *gpio = (void *)object;
186 nouveau_event_destroy(&gpio->events);
187 nouveau_subdev_destroy(&gpio->base);
191 nouveau_gpio_create_(struct nouveau_object *parent,
192 struct nouveau_object *engine,
193 struct nouveau_oclass *oclass,
194 int length, void **pobject)
196 const struct nouveau_gpio_impl *impl = (void *)oclass;
197 struct nouveau_gpio *gpio;
200 ret = nouveau_subdev_create_(parent, engine, oclass, 0, "GPIO", "gpio",
206 gpio->find = nouveau_gpio_find;
207 gpio->set = nouveau_gpio_set;
208 gpio->get = nouveau_gpio_get;
209 gpio->reset = impl->reset;
211 ret = nouveau_event_create(2, impl->lines, &gpio->events);
215 gpio->events->priv = gpio;
216 gpio->events->enable = nouveau_gpio_intr_enable;
217 gpio->events->disable = nouveau_gpio_intr_disable;
218 nv_subdev(gpio)->intr = nouveau_gpio_intr;
223 _nouveau_gpio_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
224 struct nouveau_oclass *oclass, void *data, u32 size,
225 struct nouveau_object **pobject)
227 struct nouveau_gpio *gpio;
230 ret = nouveau_gpio_create(parent, engine, oclass, &gpio);
231 *pobject = nv_object(gpio);