1c39f472eSBen Skeggs /*
2c39f472eSBen Skeggs * Copyright 2012 Red Hat Inc.
3c39f472eSBen Skeggs *
4c39f472eSBen Skeggs * Permission is hereby granted, free of charge, to any person obtaining a
5c39f472eSBen Skeggs * copy of this software and associated documentation files (the "Software"),
6c39f472eSBen Skeggs * to deal in the Software without restriction, including without limitation
7c39f472eSBen Skeggs * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8c39f472eSBen Skeggs * and/or sell copies of the Software, and to permit persons to whom the
9c39f472eSBen Skeggs * Software is furnished to do so, subject to the following conditions:
10c39f472eSBen Skeggs *
11c39f472eSBen Skeggs * The above copyright notice and this permission notice shall be included in
12c39f472eSBen Skeggs * all copies or substantial portions of the Software.
13c39f472eSBen Skeggs *
14c39f472eSBen Skeggs * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15c39f472eSBen Skeggs * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16c39f472eSBen Skeggs * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17c39f472eSBen Skeggs * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18c39f472eSBen Skeggs * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19c39f472eSBen Skeggs * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20c39f472eSBen Skeggs * OTHER DEALINGS IN THE SOFTWARE.
21c39f472eSBen Skeggs *
22c39f472eSBen Skeggs * Authors: Ben Skeggs
23c39f472eSBen Skeggs */
24c39f472eSBen Skeggs #include <subdev/bios.h>
25c39f472eSBen Skeggs #include <subdev/bios/dcb.h>
26c39f472eSBen Skeggs #include <subdev/bios/gpio.h>
27c39f472eSBen Skeggs #include <subdev/bios/xpio.h>
28c39f472eSBen Skeggs
29c39f472eSBen Skeggs u16
dcb_gpio_table(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len)30d390b480SBen Skeggs dcb_gpio_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
31c39f472eSBen Skeggs {
32c39f472eSBen Skeggs u16 data = 0x0000;
33c39f472eSBen Skeggs u16 dcb = dcb_table(bios, ver, hdr, cnt, len);
34c39f472eSBen Skeggs if (dcb) {
35c39f472eSBen Skeggs if (*ver >= 0x30 && *hdr >= 0x0c)
36*7f5f518fSBen Skeggs data = nvbios_rd16(bios, dcb + 0x0a);
37c39f472eSBen Skeggs else
38*7f5f518fSBen Skeggs if (*ver >= 0x22 && nvbios_rd08(bios, dcb - 1) >= 0x13)
39*7f5f518fSBen Skeggs data = nvbios_rd16(bios, dcb - 0x0f);
40c39f472eSBen Skeggs
41c39f472eSBen Skeggs if (data) {
42*7f5f518fSBen Skeggs *ver = nvbios_rd08(bios, data + 0x00);
43c39f472eSBen Skeggs if (*ver < 0x30) {
44c39f472eSBen Skeggs *hdr = 3;
45*7f5f518fSBen Skeggs *cnt = nvbios_rd08(bios, data + 0x02);
46*7f5f518fSBen Skeggs *len = nvbios_rd08(bios, data + 0x01);
47c39f472eSBen Skeggs } else
48c39f472eSBen Skeggs if (*ver <= 0x41) {
49*7f5f518fSBen Skeggs *hdr = nvbios_rd08(bios, data + 0x01);
50*7f5f518fSBen Skeggs *cnt = nvbios_rd08(bios, data + 0x02);
51*7f5f518fSBen Skeggs *len = nvbios_rd08(bios, data + 0x03);
52c39f472eSBen Skeggs } else {
53c39f472eSBen Skeggs data = 0x0000;
54c39f472eSBen Skeggs }
55c39f472eSBen Skeggs }
56c39f472eSBen Skeggs }
57c39f472eSBen Skeggs return data;
58c39f472eSBen Skeggs }
59c39f472eSBen Skeggs
60c39f472eSBen Skeggs u16
dcb_gpio_entry(struct nvkm_bios * bios,int idx,int ent,u8 * ver,u8 * len)61d390b480SBen Skeggs dcb_gpio_entry(struct nvkm_bios *bios, int idx, int ent, u8 *ver, u8 *len)
62c39f472eSBen Skeggs {
63c39f472eSBen Skeggs u8 hdr, cnt, xver; /* use gpio version for xpio entry parsing */
64c39f472eSBen Skeggs u16 gpio;
65c39f472eSBen Skeggs
66c39f472eSBen Skeggs if (!idx--)
67c39f472eSBen Skeggs gpio = dcb_gpio_table(bios, ver, &hdr, &cnt, len);
68c39f472eSBen Skeggs else
69c39f472eSBen Skeggs gpio = dcb_xpio_table(bios, idx, &xver, &hdr, &cnt, len);
70c39f472eSBen Skeggs
71c39f472eSBen Skeggs if (gpio && ent < cnt)
72c39f472eSBen Skeggs return gpio + hdr + (ent * *len);
73d390b480SBen Skeggs
74c39f472eSBen Skeggs return 0x0000;
75c39f472eSBen Skeggs }
76c39f472eSBen Skeggs
77c39f472eSBen Skeggs u16
dcb_gpio_parse(struct nvkm_bios * bios,int idx,int ent,u8 * ver,u8 * len,struct dcb_gpio_func * gpio)78d390b480SBen Skeggs dcb_gpio_parse(struct nvkm_bios *bios, int idx, int ent, u8 *ver, u8 *len,
79c39f472eSBen Skeggs struct dcb_gpio_func *gpio)
80c39f472eSBen Skeggs {
81c39f472eSBen Skeggs u16 data = dcb_gpio_entry(bios, idx, ent, ver, len);
82c39f472eSBen Skeggs if (data) {
83c39f472eSBen Skeggs if (*ver < 0x40) {
84*7f5f518fSBen Skeggs u16 info = nvbios_rd16(bios, data);
85c39f472eSBen Skeggs *gpio = (struct dcb_gpio_func) {
86c39f472eSBen Skeggs .line = (info & 0x001f) >> 0,
87c39f472eSBen Skeggs .func = (info & 0x07e0) >> 5,
88c39f472eSBen Skeggs .log[0] = (info & 0x1800) >> 11,
89c39f472eSBen Skeggs .log[1] = (info & 0x6000) >> 13,
90c39f472eSBen Skeggs .param = !!(info & 0x8000),
91c39f472eSBen Skeggs };
92c39f472eSBen Skeggs } else
93c39f472eSBen Skeggs if (*ver < 0x41) {
94*7f5f518fSBen Skeggs u32 info = nvbios_rd32(bios, data);
95c39f472eSBen Skeggs *gpio = (struct dcb_gpio_func) {
96c39f472eSBen Skeggs .line = (info & 0x0000001f) >> 0,
97c39f472eSBen Skeggs .func = (info & 0x0000ff00) >> 8,
98c39f472eSBen Skeggs .log[0] = (info & 0x18000000) >> 27,
99c39f472eSBen Skeggs .log[1] = (info & 0x60000000) >> 29,
100c39f472eSBen Skeggs .param = !!(info & 0x80000000),
101c39f472eSBen Skeggs };
102c39f472eSBen Skeggs } else {
103*7f5f518fSBen Skeggs u32 info = nvbios_rd32(bios, data + 0);
104*7f5f518fSBen Skeggs u8 info1 = nvbios_rd32(bios, data + 4);
105c39f472eSBen Skeggs *gpio = (struct dcb_gpio_func) {
106c39f472eSBen Skeggs .line = (info & 0x0000003f) >> 0,
107c39f472eSBen Skeggs .func = (info & 0x0000ff00) >> 8,
108c39f472eSBen Skeggs .log[0] = (info1 & 0x30) >> 4,
109c39f472eSBen Skeggs .log[1] = (info1 & 0xc0) >> 6,
110c39f472eSBen Skeggs .param = !!(info & 0x80000000),
111c39f472eSBen Skeggs };
112c39f472eSBen Skeggs }
113c39f472eSBen Skeggs }
114c39f472eSBen Skeggs
115c39f472eSBen Skeggs return data;
116c39f472eSBen Skeggs }
117c39f472eSBen Skeggs
118c39f472eSBen Skeggs u16
dcb_gpio_match(struct nvkm_bios * bios,int idx,u8 func,u8 line,u8 * ver,u8 * len,struct dcb_gpio_func * gpio)119d390b480SBen Skeggs dcb_gpio_match(struct nvkm_bios *bios, int idx, u8 func, u8 line,
120c39f472eSBen Skeggs u8 *ver, u8 *len, struct dcb_gpio_func *gpio)
121c39f472eSBen Skeggs {
122c39f472eSBen Skeggs u8 hdr, cnt, i = 0;
123c39f472eSBen Skeggs u16 data;
124c39f472eSBen Skeggs
125c39f472eSBen Skeggs while ((data = dcb_gpio_parse(bios, idx, i++, ver, len, gpio))) {
126c39f472eSBen Skeggs if ((line == 0xff || line == gpio->line) &&
127c39f472eSBen Skeggs (func == 0xff || func == gpio->func))
128c39f472eSBen Skeggs return data;
129c39f472eSBen Skeggs }
130c39f472eSBen Skeggs
131c39f472eSBen Skeggs /* DCB 2.2, fixed TVDAC GPIO data */
132c39f472eSBen Skeggs if ((data = dcb_table(bios, ver, &hdr, &cnt, len))) {
133c39f472eSBen Skeggs if (*ver >= 0x22 && *ver < 0x30 && func == DCB_GPIO_TVDAC0) {
134*7f5f518fSBen Skeggs u8 conf = nvbios_rd08(bios, data - 5);
135*7f5f518fSBen Skeggs u8 addr = nvbios_rd08(bios, data - 4);
136c39f472eSBen Skeggs if (conf & 0x01) {
137c39f472eSBen Skeggs *gpio = (struct dcb_gpio_func) {
138c39f472eSBen Skeggs .func = DCB_GPIO_TVDAC0,
139c39f472eSBen Skeggs .line = addr >> 4,
140c39f472eSBen Skeggs .log[0] = !!(conf & 0x02),
141c39f472eSBen Skeggs .log[1] = !(conf & 0x02),
142c39f472eSBen Skeggs };
143c39f472eSBen Skeggs *ver = 0x00;
144c39f472eSBen Skeggs return data;
145c39f472eSBen Skeggs }
146c39f472eSBen Skeggs }
147c39f472eSBen Skeggs }
148c39f472eSBen Skeggs
149c39f472eSBen Skeggs return 0x0000;
150c39f472eSBen Skeggs }
151