Commit | Line | Data |
---|---|---|
100e74a1 FTS |
1 | /* |
2 | * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. | |
3 | * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved. | |
4 | * Copyright 2010 Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public | |
8 | * License as published by the Free Software Foundation; | |
9 | * either version 2, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even | |
13 | * the implied warranty of MERCHANTABILITY or FITNESS FOR | |
14 | * A PARTICULAR PURPOSE.See the GNU General Public License | |
15 | * for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., | |
20 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | */ | |
22 | /* | |
23 | * basic modesetting functions | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
ec66841e | 27 | #include <linux/via-core.h> |
100e74a1 | 28 | #include "via_modesetting.h" |
100e74a1 FTS |
29 | #include "share.h" |
30 | #include "debug.h" | |
31 | ||
32 | void via_set_primary_address(u32 addr) | |
33 | { | |
34 | DEBUG_MSG(KERN_DEBUG "via_set_primary_address(0x%08X)\n", addr); | |
35 | via_write_reg(VIACR, 0x0D, addr & 0xFF); | |
36 | via_write_reg(VIACR, 0x0C, (addr >> 8) & 0xFF); | |
37 | via_write_reg(VIACR, 0x34, (addr >> 16) & 0xFF); | |
38 | via_write_reg_mask(VIACR, 0x48, (addr >> 24) & 0x1F, 0x1F); | |
39 | } | |
40 | ||
41 | void via_set_secondary_address(u32 addr) | |
42 | { | |
43 | DEBUG_MSG(KERN_DEBUG "via_set_secondary_address(0x%08X)\n", addr); | |
44 | /* secondary display supports only quadword aligned memory */ | |
45 | via_write_reg_mask(VIACR, 0x62, (addr >> 2) & 0xFE, 0xFE); | |
46 | via_write_reg(VIACR, 0x63, (addr >> 10) & 0xFF); | |
47 | via_write_reg(VIACR, 0x64, (addr >> 18) & 0xFF); | |
48 | via_write_reg_mask(VIACR, 0xA3, (addr >> 26) & 0x07, 0x07); | |
49 | } | |
50 | ||
51 | void via_set_primary_pitch(u32 pitch) | |
52 | { | |
53 | DEBUG_MSG(KERN_DEBUG "via_set_primary_pitch(0x%08X)\n", pitch); | |
54 | /* spec does not say that first adapter skips 3 bits but old | |
55 | * code did it and seems to be reasonable in analogy to 2nd adapter | |
56 | */ | |
57 | pitch = pitch >> 3; | |
58 | via_write_reg(VIACR, 0x13, pitch & 0xFF); | |
59 | via_write_reg_mask(VIACR, 0x35, (pitch >> (8 - 5)) & 0xE0, 0xE0); | |
60 | } | |
61 | ||
62 | void via_set_secondary_pitch(u32 pitch) | |
63 | { | |
64 | DEBUG_MSG(KERN_DEBUG "via_set_secondary_pitch(0x%08X)\n", pitch); | |
65 | pitch = pitch >> 3; | |
66 | via_write_reg(VIACR, 0x66, pitch & 0xFF); | |
67 | via_write_reg_mask(VIACR, 0x67, (pitch >> 8) & 0x03, 0x03); | |
68 | via_write_reg_mask(VIACR, 0x71, (pitch >> (10 - 7)) & 0x80, 0x80); | |
69 | } | |
70 | ||
71 | void via_set_primary_color_depth(u8 depth) | |
72 | { | |
73 | u8 value; | |
74 | ||
75 | DEBUG_MSG(KERN_DEBUG "via_set_primary_color_depth(%d)\n", depth); | |
76 | switch (depth) { | |
77 | case 8: | |
78 | value = 0x00; | |
79 | break; | |
80 | case 15: | |
81 | value = 0x04; | |
82 | break; | |
83 | case 16: | |
84 | value = 0x14; | |
85 | break; | |
86 | case 24: | |
87 | value = 0x0C; | |
88 | break; | |
89 | case 30: | |
90 | value = 0x08; | |
91 | break; | |
92 | default: | |
93 | printk(KERN_WARNING "via_set_primary_color_depth: " | |
94 | "Unsupported depth: %d\n", depth); | |
95 | return; | |
96 | } | |
97 | ||
98 | via_write_reg_mask(VIASR, 0x15, value, 0x1C); | |
99 | } | |
100 | ||
101 | void via_set_secondary_color_depth(u8 depth) | |
102 | { | |
103 | u8 value; | |
104 | ||
105 | DEBUG_MSG(KERN_DEBUG "via_set_secondary_color_depth(%d)\n", depth); | |
106 | switch (depth) { | |
107 | case 8: | |
108 | value = 0x00; | |
109 | break; | |
110 | case 16: | |
111 | value = 0x40; | |
112 | break; | |
113 | case 24: | |
114 | value = 0xC0; | |
115 | break; | |
116 | case 30: | |
117 | value = 0x80; | |
118 | break; | |
119 | default: | |
120 | printk(KERN_WARNING "via_set_secondary_color_depth: " | |
121 | "Unsupported depth: %d\n", depth); | |
122 | return; | |
123 | } | |
124 | ||
125 | via_write_reg_mask(VIACR, 0x67, value, 0xC0); | |
126 | } |