blob: e9b9a9abdfdd5b60b74f0fd6cdad0f6d79354147 [file] [log] [blame]
Mike Frysingerfee531e2008-04-18 20:44:11 -04001/*
2 * BF533-STAMP splash driver
3 *
4 * Copyright (c) 2006-2008 Analog Devices Inc.
5 * (C) Copyright 2000
6 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
7 * (C) Copyright 2002
8 * Wolfgang Denk, wd@denx.de
9 *
10 * Licensed under the GPL-2 or later.
11 */
12
13#include <stdarg.h>
14#include <common.h>
15#include <config.h>
16#include <malloc.h>
17#include <asm/blackfin.h>
18#include <asm/mach-common/bits/dma.h>
19#include <i2c.h>
20#include <linux/types.h>
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020021#include <stdio_dev.h>
Mike Frysingerfee531e2008-04-18 20:44:11 -040022
Mike Frysingerfee531e2008-04-18 20:44:11 -040023#define DMA_SIZE16 2
24
25#include <asm/mach-common/bits/ppi.h>
26
27#define NTSC_FRAME_ADDR 0x06000000
28#include "video.h"
29
30/* NTSC OUTPUT SIZE 720 * 240 */
31#define VERTICAL 2
32#define HORIZONTAL 4
33
34int is_vblank_line(const int line)
35{
36 /*
37 * This array contains a single bit for each line in
38 * an NTSC frame.
39 */
40 if ((line <= 18) || (line >= 264 && line <= 281) || (line == 528))
41 return true;
42
43 return false;
44}
45
46int NTSC_framebuffer_init(char *base_address)
47{
48 const int NTSC_frames = 1;
49 const int NTSC_lines = 525;
50 char *dest = base_address;
51 int frame_num, line_num;
52
53 for (frame_num = 0; frame_num < NTSC_frames; ++frame_num) {
54 for (line_num = 1; line_num <= NTSC_lines; ++line_num) {
55 unsigned int code;
56 int offset = 0;
57 int i;
58
59 if (is_vblank_line(line_num))
60 offset++;
61
62 if (line_num > 266 || line_num < 3)
63 offset += 2;
64
65 /* Output EAV code */
66 code = system_code_map[offset].eav;
67 write_dest_byte((char)(code >> 24) & 0xff);
68 write_dest_byte((char)(code >> 16) & 0xff);
69 write_dest_byte((char)(code >> 8) & 0xff);
70 write_dest_byte((char)(code) & 0xff);
71
72 /* Output horizontal blanking */
73 for (i = 0; i < 67 * 2; ++i) {
74 write_dest_byte(0x80);
75 write_dest_byte(0x10);
76 }
77
78 /* Output SAV */
79 code = system_code_map[offset].sav;
80 write_dest_byte((char)(code >> 24) & 0xff);
81 write_dest_byte((char)(code >> 16) & 0xff);
82 write_dest_byte((char)(code >> 8) & 0xff);
83 write_dest_byte((char)(code) & 0xff);
84
85 /* Output empty horizontal data */
86 for (i = 0; i < 360 * 2; ++i) {
87 write_dest_byte(0x80);
88 write_dest_byte(0x10);
89 }
90 }
91 }
92
93 return dest - base_address;
94}
95
96void fill_frame(char *Frame, int Value)
97{
98 int *OddPtr32;
99 int OddLine;
100 int *EvenPtr32;
101 int EvenLine;
102 int i;
103 int *data;
104 int m, n;
105
106 /* fill odd and even frames */
107 for (OddLine = 22, EvenLine = 285; OddLine < 263; OddLine++, EvenLine++) {
108 OddPtr32 = (int *)((Frame + (OddLine * 1716)) + 276);
109 EvenPtr32 = (int *)((Frame + (EvenLine * 1716)) + 276);
110 for (i = 0; i < 360; i++, OddPtr32++, EvenPtr32++) {
111 *OddPtr32 = Value;
112 *EvenPtr32 = Value;
113 }
114 }
115
116 for (m = 0; m < VERTICAL; m++) {
117 data = (int *)u_boot_logo.data;
118 for (OddLine = (22 + m), EvenLine = (285 + m);
119 OddLine < (u_boot_logo.height * VERTICAL) + (22 + m);
120 OddLine += VERTICAL, EvenLine += VERTICAL) {
121 OddPtr32 = (int *)((Frame + ((OddLine) * 1716)) + 276);
122 EvenPtr32 =
123 (int *)((Frame + ((EvenLine) * 1716)) + 276);
124 for (i = 0; i < u_boot_logo.width / 2; i++) {
125 /* enlarge one pixel to m x n */
126 for (n = 0; n < HORIZONTAL; n++) {
127 *OddPtr32++ = *data;
128 *EvenPtr32++ = *data;
129 }
130 data++;
131 }
132 }
133 }
134}
135
136static void video_init(char *NTSCFrame)
137{
138 NTSC_framebuffer_init(NTSCFrame);
139 fill_frame(NTSCFrame, BLUE);
140
141 bfin_write_PPI_CONTROL(0x0082);
142 bfin_write_PPI_FRAME(0x020D);
143
144 bfin_write_DMA0_START_ADDR(NTSCFrame);
145 bfin_write_DMA0_X_COUNT(0x035A);
146 bfin_write_DMA0_X_MODIFY(0x0002);
147 bfin_write_DMA0_Y_COUNT(0x020D);
148 bfin_write_DMA0_Y_MODIFY(0x0002);
149 bfin_write_DMA0_CONFIG(0x1015);
150 bfin_write_PPI_CONTROL(0x0083);
151}
152
Michael Hennerich5fc564e2009-08-07 02:47:54 +0000153void video_stop(void)
154{
155 bfin_write_PPI_CONTROL(0);
156 bfin_write_DMA0_CONFIG(0);
157}
158
Mike Frysingerfee531e2008-04-18 20:44:11 -0400159int drv_video_init(void)
160{
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200161 struct stdio_dev videodev;
Mike Frysingerfee531e2008-04-18 20:44:11 -0400162
163 video_init((void *)NTSC_FRAME_ADDR);
164
165 memset(&videodev, 0, sizeof(videodev));
166 strcpy(videodev.name, "video");
Mike Frysingerfee531e2008-04-18 20:44:11 -0400167
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200168 return stdio_register(&videodev);
Mike Frysingerfee531e2008-04-18 20:44:11 -0400169}