/* * (C) Copyright 2000 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it * (C) Copyright 2002 * Wolfgang Denk, wd@denx.de * (C) Copyright 2006 * Aubrey Li, aubrey.li@analog.com * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <stdarg.h> #include <common.h> #include <config.h> #include <asm/blackfin.h> #include <i2c.h> #include <linux/types.h> #include <devices.h> #ifdef CONFIG_VIDEO #define NTSC_FRAME_ADDR 0x06000000 #include "video.h" /* NTSC OUTPUT SIZE 720 * 240 */ #define VERTICAL 2 #define HORIZONTAL 4 int is_vblank_line(const int line) { /* * This array contains a single bit for each line in * an NTSC frame. */ if ((line <= 18) || (line >= 264 && line <= 281) || (line == 528)) return true; return false; } int NTSC_framebuffer_init(char *base_address) { const int NTSC_frames = 1; const int NTSC_lines = 525; char *dest = base_address; int frame_num, line_num; for (frame_num = 0; frame_num < NTSC_frames; ++frame_num) { for (line_num = 1; line_num <= NTSC_lines; ++line_num) { unsigned int code; int offset = 0; int i; if (is_vblank_line(line_num)) offset++; if (line_num > 266 || line_num < 3) offset += 2; /* Output EAV code */ code = SystemCodeMap[offset].EAV; write_dest_byte((char)(code >> 24) & 0xff); write_dest_byte((char)(code >> 16) & 0xff); write_dest_byte((char)(code >> 8) & 0xff); write_dest_byte((char)(code) & 0xff); /* Output horizontal blanking */ for (i = 0; i < 67 * 2; ++i) { write_dest_byte(0x80); write_dest_byte(0x10); } /* Output SAV */ code = SystemCodeMap[offset].SAV; write_dest_byte((char)(code >> 24) & 0xff); write_dest_byte((char)(code >> 16) & 0xff); write_dest_byte((char)(code >> 8) & 0xff); write_dest_byte((char)(code) & 0xff); /* Output empty horizontal data */ for (i = 0; i < 360 * 2; ++i) { write_dest_byte(0x80); write_dest_byte(0x10); } } } return dest - base_address; } void fill_frame(char *Frame, int Value) { int *OddPtr32; int OddLine; int *EvenPtr32; int EvenLine; int i; int *data; int m, n; /* fill odd and even frames */ for (OddLine = 22, EvenLine = 285; OddLine < 263; OddLine++, EvenLine++) { OddPtr32 = (int *)((Frame + (OddLine * 1716)) + 276); EvenPtr32 = (int *)((Frame + (EvenLine * 1716)) + 276); for (i = 0; i < 360; i++, OddPtr32++, EvenPtr32++) { *OddPtr32 = Value; *EvenPtr32 = Value; } } for (m = 0; m < VERTICAL; m++) { data = (int *)u_boot_logo.data; for (OddLine = (22 + m), EvenLine = (285 + m); OddLine < (u_boot_logo.height * VERTICAL) + (22 + m); OddLine += VERTICAL, EvenLine += VERTICAL) { OddPtr32 = (int *)((Frame + ((OddLine) * 1716)) + 276); EvenPtr32 = (int *)((Frame + ((EvenLine) * 1716)) + 276); for (i = 0; i < u_boot_logo.width / 2; i++) { /* enlarge one pixel to m x n */ for (n = 0; n < HORIZONTAL; n++) { *OddPtr32++ = *data; *EvenPtr32++ = *data; } data++; } } } } void video_putc(const char c) { } void video_puts(const char *s) { } static int video_init(void) { char *NTSCFrame; NTSCFrame = (char *)NTSC_FRAME_ADDR; NTSC_framebuffer_init(NTSCFrame); fill_frame(NTSCFrame, BLUE); *pPPI_CONTROL = 0x0082; *pPPI_FRAME = 0x020D; *pDMA0_START_ADDR = NTSCFrame; *pDMA0_X_COUNT = 0x035A; *pDMA0_X_MODIFY = 0x0002; *pDMA0_Y_COUNT = 0x020D; *pDMA0_Y_MODIFY = 0x0002; *pDMA0_CONFIG = 0x1015; *pPPI_CONTROL = 0x0083; return 0; } int drv_video_init(void) { int error, devices = 1; device_t videodev; video_init(); /* Video initialization */ memset(&videodev, 0, sizeof(videodev)); strcpy(videodev.name, "video"); videodev.ext = DEV_EXT_VIDEO; /* Video extensions */ videodev.flags = DEV_FLAGS_OUTPUT; /* Output only */ videodev.putc = video_putc; /* 'putc' function */ videodev.puts = video_puts; /* 'puts' function */ error = device_register(&videodev); return (error == 0) ? devices : error; } #endif