1// SPDX-License-Identifier: MIT
2/*
3 * Copyright (c) 2005 ASPEED Technology Inc.
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of the authors not be used in
10 * advertising or publicity pertaining to distribution of the software without
11 * specific, written prior permission. The authors makes no representations
12 * about the suitability of this software for any purpose. It is provided
13 * "as is" without express or implied warranty.
14 *
15 * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
21 * PERFORMANCE OF THIS SOFTWARE.
22 */
23
24#include "ast_drv.h"
25#include "ast_vbios.h"
26
27/* 4:3 */
28
29static const struct ast_vbios_enhtable res_640x480[] = {
30 { .ht: 800, .hde: 640, .hfp: 8, .hsync: 96, .vt: 525, .vde: 480, .vfp: 2, .vsync: 2, VCLK25_175, /* 60 Hz */
31 .flags: (SyncNN | HBorder | VBorder | Charx8Dot), .refresh_rate: 60, .refresh_rate_index: 1, .mode_id: 0x2e },
32 { 832, 640, 16, 40, 520, 480, 1, 3, VCLK31_5, /* 72 Hz */
33 (SyncNN | HBorder | VBorder | Charx8Dot), 72, 2, 0x2e },
34 { 840, 640, 16, 64, 500, 480, 1, 3, VCLK31_5, /* 75 Hz */
35 (SyncNN | Charx8Dot), 75, 3, 0x2e },
36 { 832, 640, 56, 56, 509, 480, 1, 3, VCLK36, /* 85 Hz */
37 (SyncNN | Charx8Dot), 85, 4, 0x2e },
38 AST_VBIOS_INVALID_MODE, /* end */
39};
40
41static const struct ast_vbios_enhtable res_800x600[] = {
42 { 1024, 800, 24, 72, 625, 600, 1, 2, VCLK36, /* 56 Hz */
43 (SyncPP | Charx8Dot), 56, 1, 0x30 },
44 { 1056, 800, 40, 128, 628, 600, 1, 4, VCLK40, /* 60 Hz */
45 (SyncPP | Charx8Dot), 60, 2, 0x30 },
46 { 1040, 800, 56, 120, 666, 600, 37, 6, VCLK50, /* 72 Hz */
47 (SyncPP | Charx8Dot), 72, 3, 0x30 },
48 { 1056, 800, 16, 80, 625, 600, 1, 3, VCLK49_5, /* 75 Hz */
49 (SyncPP | Charx8Dot), 75, 4, 0x30 },
50 { 1048, 800, 32, 64, 631, 600, 1, 3, VCLK56_25, /* 85 Hz */
51 (SyncPP | Charx8Dot), 84, 5, 0x30 },
52 AST_VBIOS_INVALID_MODE, /* end */
53};
54
55static const struct ast_vbios_enhtable res_1024x768[] = {
56 { 1344, 1024, 24, 136, 806, 768, 3, 6, VCLK65, /* 60 Hz */
57 (SyncNN | Charx8Dot), 60, 1, 0x31 },
58 { 1328, 1024, 24, 136, 806, 768, 3, 6, VCLK75, /* 70 Hz */
59 (SyncNN | Charx8Dot), 70, 2, 0x31 },
60 { 1312, 1024, 16, 96, 800, 768, 1, 3, VCLK78_75, /* 75 Hz */
61 (SyncPP | Charx8Dot), 75, 3, 0x31 },
62 { 1376, 1024, 48, 96, 808, 768, 1, 3, VCLK94_5, /* 85 Hz */
63 (SyncPP | Charx8Dot), 84, 4, 0x31 },
64 AST_VBIOS_INVALID_MODE, /* end */
65};
66
67static const struct ast_vbios_enhtable res_1152x864[] = {
68 { 1600, 1152, 64, 128, 900, 864, 1, 3, VCLK108, /* 75 Hz */
69 (SyncPP | Charx8Dot | NewModeInfo), 75, 1, 0x3b },
70 AST_VBIOS_INVALID_MODE, /* end */
71};
72
73static const struct ast_vbios_enhtable res_1280x1024[] = {
74 { 1688, 1280, 48, 112, 1066, 1024, 1, 3, VCLK108, /* 60 Hz */
75 (SyncPP | Charx8Dot), 60, 1, 0x32 },
76 { 1688, 1280, 16, 144, 1066, 1024, 1, 3, VCLK135, /* 75 Hz */
77 (SyncPP | Charx8Dot), 75, 2, 0x32 },
78 { 1728, 1280, 64, 160, 1072, 1024, 1, 3, VCLK157_5, /* 85 Hz */
79 (SyncPP | Charx8Dot), 85, 3, 0x32 },
80 AST_VBIOS_INVALID_MODE, /* end */
81};
82
83static const struct ast_vbios_enhtable res_1600x1200[] = {
84 { 2160, 1600, 64, 192, 1250, 1200, 1, 3, VCLK162, /* 60 Hz */
85 (SyncPP | Charx8Dot), 60, 1, 0x33 },
86 AST_VBIOS_INVALID_MODE, /* end */
87};
88
89/* 16:9 */
90
91static const struct ast_vbios_enhtable res_1360x768[] = {
92 { 1792, 1360, 64, 112, 795, 768, 3, 6, VCLK85_5, /* 60 Hz */
93 (SyncPP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 1, 0x39 },
94 AST_VBIOS_INVALID_MODE, /* end */
95};
96
97static const struct ast_vbios_enhtable res_1600x900[] = {
98 { 1760, 1600, 48, 32, 926, 900, 3, 5, VCLK97_75, /* 60 Hz CVT RB */
99 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
100 AST2500PreCatchCRT), 60, 1, 0x3a },
101 { 2112, 1600, 88, 168, 934, 900, 3, 5, VCLK118_25, /* 60 Hz CVT */
102 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x3a },
103 AST_VBIOS_INVALID_MODE, /* end */
104};
105
106static const struct ast_vbios_enhtable res_1920x1080[] = {
107 { 2200, 1920, 88, 44, 1125, 1080, 4, 5, VCLK148_5, /* 60 Hz */
108 (SyncPP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
109 AST2500PreCatchCRT), 60, 1, 0x38 },
110 AST_VBIOS_INVALID_MODE, /* end */
111};
112
113/* 16:10 */
114
115static const struct ast_vbios_enhtable res_1280x800[] = {
116 { 1440, 1280, 48, 32, 823, 800, 3, 6, VCLK71, /* 60 Hz RB */
117 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
118 AST2500PreCatchCRT), 60, 1, 0x35 },
119 { 1680, 1280, 72, 128, 831, 800, 3, 6, VCLK83_5, /* 60 Hz */
120 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x35 },
121 AST_VBIOS_INVALID_MODE, /* end */
122};
123
124static const struct ast_vbios_enhtable res_1440x900[] = {
125 { 1600, 1440, 48, 32, 926, 900, 3, 6, VCLK88_75, /* 60 Hz RB */
126 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
127 AST2500PreCatchCRT), 60, 1, 0x36 },
128 { 1904, 1440, 80, 152, 934, 900, 3, 6, VCLK106_5, /* 60 Hz */
129 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x36 },
130 AST_VBIOS_INVALID_MODE, /* end */
131};
132
133static const struct ast_vbios_enhtable res_1680x1050[] = {
134 { 1840, 1680, 48, 32, 1080, 1050, 3, 6, VCLK119, /* 60 Hz RB */
135 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
136 AST2500PreCatchCRT), 60, 1, 0x37 },
137 { 2240, 1680, 104, 176, 1089, 1050, 3, 6, VCLK146_25, /* 60 Hz */
138 (SyncPN | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo), 60, 2, 0x37 },
139 AST_VBIOS_INVALID_MODE, /* end */
140};
141
142static const struct ast_vbios_enhtable res_1920x1200[] = {
143 { 2080, 1920, 48, 32, 1235, 1200, 3, 6, VCLK154, /* 60 Hz RB*/
144 (SyncNP | Charx8Dot | LineCompareOff | WideScreenMode | NewModeInfo |
145 AST2500PreCatchCRT), 60, 1, 0x34 },
146 AST_VBIOS_INVALID_MODE, /* end */
147};
148
149/*
150 * VBIOS mode tables
151 */
152
153static const struct ast_vbios_enhtable *res_table_wuxga[] = {
154 &res_1920x1200[0],
155 NULL,
156};
157
158static const struct ast_vbios_enhtable *res_table_fullhd[] = {
159 &res_1920x1080[0],
160 NULL,
161};
162
163static const struct ast_vbios_enhtable *res_table_wsxga_p[] = {
164 &res_1280x800[0],
165 &res_1360x768[0],
166 &res_1440x900[0],
167 &res_1600x900[0],
168 &res_1680x1050[0],
169 NULL,
170};
171
172static const struct ast_vbios_enhtable *res_table[] = {
173 &res_640x480[0],
174 &res_800x600[0],
175 &res_1024x768[0],
176 &res_1152x864[0],
177 &res_1280x1024[0],
178 &res_1600x1200[0],
179 NULL,
180};
181
182static const struct ast_vbios_enhtable *
183__ast_vbios_find_mode_table(const struct ast_vbios_enhtable **vmode_tables,
184 unsigned int hdisplay,
185 unsigned int vdisplay)
186{
187 while (*vmode_tables) {
188 if ((*vmode_tables)->hde == hdisplay && (*vmode_tables)->vde == vdisplay)
189 return *vmode_tables;
190 ++vmode_tables;
191 }
192
193 return NULL;
194}
195
196static const struct ast_vbios_enhtable *ast_vbios_find_mode_table(const struct ast_device *ast,
197 unsigned int hdisplay,
198 unsigned int vdisplay)
199{
200 const struct ast_vbios_enhtable *vmode_table = NULL;
201
202 if (ast->support_wuxga)
203 vmode_table = __ast_vbios_find_mode_table(vmode_tables: res_table_wuxga, hdisplay, vdisplay);
204 if (!vmode_table && ast->support_fullhd)
205 vmode_table = __ast_vbios_find_mode_table(vmode_tables: res_table_fullhd, hdisplay, vdisplay);
206 if (!vmode_table && ast->support_wsxga_p)
207 vmode_table = __ast_vbios_find_mode_table(vmode_tables: res_table_wsxga_p, hdisplay, vdisplay);
208 if (!vmode_table)
209 vmode_table = __ast_vbios_find_mode_table(vmode_tables: res_table, hdisplay, vdisplay);
210
211 return vmode_table;
212}
213
214const struct ast_vbios_enhtable *ast_vbios_find_mode(const struct ast_device *ast,
215 const struct drm_display_mode *mode)
216{
217 const struct ast_vbios_enhtable *best_vmode = NULL;
218 const struct ast_vbios_enhtable *vmode_table;
219 const struct ast_vbios_enhtable *vmode;
220 u32 refresh_rate;
221
222 vmode_table = ast_vbios_find_mode_table(ast, hdisplay: mode->hdisplay, vdisplay: mode->vdisplay);
223 if (!vmode_table)
224 return NULL;
225
226 refresh_rate = drm_mode_vrefresh(mode);
227
228 for (vmode = vmode_table; ast_vbios_mode_is_valid(vmode); ++vmode) {
229 if (((mode->flags & DRM_MODE_FLAG_NVSYNC) && (vmode->flags & PVSync)) ||
230 ((mode->flags & DRM_MODE_FLAG_PVSYNC) && (vmode->flags & NVSync)) ||
231 ((mode->flags & DRM_MODE_FLAG_NHSYNC) && (vmode->flags & PHSync)) ||
232 ((mode->flags & DRM_MODE_FLAG_PHSYNC) && (vmode->flags & NHSync))) {
233 continue;
234 }
235 if (vmode->refresh_rate <= refresh_rate &&
236 (!best_vmode || vmode->refresh_rate > best_vmode->refresh_rate))
237 best_vmode = vmode;
238 }
239
240 return best_vmode;
241}
242

source code of linux/drivers/gpu/drm/ast/ast_vbios.c