tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Silicon Motion SM712 frame buffer device
3 *
4 * Copyright (C) 2006 Silicon Motion Technology Corp.
5 * Authors: Ge Wang, gewang@siliconmotion.com
6 * Boyod boyod.yang@siliconmotion.com.cn
7 *
8 * Copyright (C) 2009 Lemote, Inc.
9 * Author: Wu Zhangjin, wuzhangjin@gmail.com
10 *
11 * This file is subject to the terms and conditions of the GNU General Public
12 * License. See the file COPYING in the main directory of this archive for
13 * more details.
14 */
15
16#define FB_ACCEL_SMI_LYNX 88
17
18#define SCREEN_X_RES 1024
19#define SCREEN_Y_RES 600
20#define SCREEN_BPP 16
21
22/*Assume SM712 graphics chip has 4MB VRAM */
23#define SM712_VIDEOMEMORYSIZE 0x00400000
24/*Assume SM722 graphics chip has 8MB VRAM */
25#define SM722_VIDEOMEMORYSIZE 0x00800000
26
27#define dac_reg (0x3c8)
28#define dac_val (0x3c9)
29
30extern void __iomem *smtc_regbaseaddress;
31#define smtc_mmiowb(dat, reg) writeb(dat, smtc_regbaseaddress + reg)
32
33#define smtc_mmiorb(reg) readb(smtc_regbaseaddress + reg)
34
35#define SIZE_SR00_SR04 (0x04 - 0x00 + 1)
36#define SIZE_SR10_SR24 (0x24 - 0x10 + 1)
37#define SIZE_SR30_SR75 (0x75 - 0x30 + 1)
38#define SIZE_SR80_SR93 (0x93 - 0x80 + 1)
39#define SIZE_SRA0_SRAF (0xAF - 0xA0 + 1)
40#define SIZE_GR00_GR08 (0x08 - 0x00 + 1)
41#define SIZE_AR00_AR14 (0x14 - 0x00 + 1)
42#define SIZE_CR00_CR18 (0x18 - 0x00 + 1)
43#define SIZE_CR30_CR4D (0x4D - 0x30 + 1)
44#define SIZE_CR90_CRA7 (0xA7 - 0x90 + 1)
45
46static inline void smtc_crtcw(int reg, int val)
47{
48 smtc_mmiowb(reg, 0x3d4);
49 smtc_mmiowb(val, 0x3d5);
50}
51
52static inline void smtc_grphw(int reg, int val)
53{
54 smtc_mmiowb(reg, 0x3ce);
55 smtc_mmiowb(val, 0x3cf);
56}
57
58static inline void smtc_attrw(int reg, int val)
59{
60 smtc_mmiorb(0x3da);
61 smtc_mmiowb(reg, 0x3c0);
62 smtc_mmiorb(0x3c1);
63 smtc_mmiowb(val, 0x3c0);
64}
65
66static inline void smtc_seqw(int reg, int val)
67{
68 smtc_mmiowb(reg, 0x3c4);
69 smtc_mmiowb(val, 0x3c5);
70}
71
72static inline unsigned int smtc_seqr(int reg)
73{
74 smtc_mmiowb(reg, 0x3c4);
75 return smtc_mmiorb(0x3c5);
76}
77
78/* The next structure holds all information relevant for a specific video mode.
79 */
80
81struct modeinit {
82 int mmsizex;
83 int mmsizey;
84 int bpp;
85 int hz;
86 unsigned char init_misc;
87 unsigned char init_sr00_sr04[SIZE_SR00_SR04];
88 unsigned char init_sr10_sr24[SIZE_SR10_SR24];
89 unsigned char init_sr30_sr75[SIZE_SR30_SR75];
90 unsigned char init_sr80_sr93[SIZE_SR80_SR93];
91 unsigned char init_sra0_sraf[SIZE_SRA0_SRAF];
92 unsigned char init_gr00_gr08[SIZE_GR00_GR08];
93 unsigned char init_ar00_ar14[SIZE_AR00_AR14];
94 unsigned char init_cr00_cr18[SIZE_CR00_CR18];
95 unsigned char init_cr30_cr4d[SIZE_CR30_CR4D];
96 unsigned char init_cr90_cra7[SIZE_CR90_CRA7];
97};
98
99#ifdef __BIG_ENDIAN
100#define pal_rgb(r, g, b, val) (((r & 0xf800) >> 8) | \
101 ((g & 0xe000) >> 13) | \
102 ((g & 0x1c00) << 3) | \
103 ((b & 0xf800) >> 3))
104#define big_addr 0x800000
105#define mmio_addr 0x00800000
106#define seqw17() smtc_seqw(0x17, 0x30)
107#define big_pixel_depth(p, d) {if (p == 24) {p = 32; d = 32; } }
108#define big_swap(p) ((p & 0xff00ff00 >> 8) | (p & 0x00ff00ff << 8))
109#else
110#define pal_rgb(r, g, b, val) val
111#define big_addr 0
112#define mmio_addr 0x00c00000
113#define seqw17() do { } while (0)
114#define big_pixel_depth(p, d) do { } while (0)
115#define big_swap(p) p
116#endif