2 * Copyright 2012 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/dcb.h>
27 #include <subdev/bios/gpio.h>
30 dcb_gpio_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
33 u16 dcb = dcb_table(bios, ver, hdr, cnt, len);
35 if (*ver >= 0x30 && *hdr >= 0x0c)
36 data = nv_ro16(bios, dcb + 0x0a);
38 if (*ver >= 0x22 && nv_ro08(bios, dcb - 1) >= 0x13)
39 data = nv_ro16(bios, dcb - 0x0f);
42 *ver = nv_ro08(bios, data + 0x00);
45 *cnt = nv_ro08(bios, data + 0x02);
46 *len = nv_ro08(bios, data + 0x01);
49 *hdr = nv_ro08(bios, data + 0x01);
50 *cnt = nv_ro08(bios, data + 0x02);
51 *len = nv_ro08(bios, data + 0x03);
61 dcb_gpio_entry(struct nouveau_bios *bios, int idx, int ent, u8 *ver, u8 *len)
64 u16 gpio = !idx ? dcb_gpio_table(bios, ver, &hdr, &cnt, len) : 0x0000;
65 if (gpio && ent < cnt)
66 return gpio + hdr + (ent * *len);
71 dcb_gpio_parse(struct nouveau_bios *bios, int idx, int ent, u8 *ver, u8 *len,
72 struct dcb_gpio_func *gpio)
74 u16 data = dcb_gpio_entry(bios, idx, ent, ver, len);
77 u16 info = nv_ro16(bios, data);
78 *gpio = (struct dcb_gpio_func) {
79 .line = (info & 0x001f) >> 0,
80 .func = (info & 0x07e0) >> 5,
81 .log[0] = (info & 0x1800) >> 11,
82 .log[1] = (info & 0x6000) >> 13,
83 .param = !!(info & 0x8000),
87 u32 info = nv_ro32(bios, data);
88 *gpio = (struct dcb_gpio_func) {
89 .line = (info & 0x0000001f) >> 0,
90 .func = (info & 0x0000ff00) >> 8,
91 .log[0] = (info & 0x18000000) >> 27,
92 .log[1] = (info & 0x60000000) >> 29,
93 .param = !!(info & 0x80000000),
96 u32 info = nv_ro32(bios, data + 0);
97 u8 info1 = nv_ro32(bios, data + 4);
98 *gpio = (struct dcb_gpio_func) {
99 .line = (info & 0x0000003f) >> 0,
100 .func = (info & 0x0000ff00) >> 8,
101 .log[0] = (info1 & 0x30) >> 4,
102 .log[1] = (info1 & 0xc0) >> 6,
103 .param = !!(info & 0x80000000),
112 dcb_gpio_match(struct nouveau_bios *bios, int idx, u8 func, u8 line,
113 u8 *ver, u8 *len, struct dcb_gpio_func *gpio)
118 while ((data = dcb_gpio_parse(bios, idx, i++, ver, len, gpio))) {
119 if ((line == 0xff || line == gpio->line) &&
120 (func == 0xff || func == gpio->func))
124 /* DCB 2.2, fixed TVDAC GPIO data */
125 if ((data = dcb_table(bios, ver, &hdr, &cnt, len))) {
126 if (*ver >= 0x22 && *ver < 0x30 && func == DCB_GPIO_TVDAC0) {
127 u8 conf = nv_ro08(bios, data - 5);
128 u8 addr = nv_ro08(bios, data - 4);
130 *gpio = (struct dcb_gpio_func) {
131 .func = DCB_GPIO_TVDAC0,
133 .log[0] = !!(conf & 0x02),
134 .log[1] = !(conf & 0x02),