This video driver used to live in the Blackfin cpu directory, but it was lost during the unification process. This brings it back. Signed-off-by: Mike Frysinger <vapier@gentoo.org>master
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/*
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* BF533-STAMP splash driver |
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* |
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* Copyright (c) 2006-2008 Analog Devices Inc. |
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* (C) Copyright 2000 |
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* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it |
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* (C) Copyright 2002 |
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* Wolfgang Denk, wd@denx.de |
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* |
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* Licensed under the GPL-2 or later. |
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*/ |
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#include <stdarg.h> |
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#include <common.h> |
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#include <config.h> |
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#include <malloc.h> |
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#include <asm/blackfin.h> |
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#include <asm/mach-common/bits/dma.h> |
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#include <i2c.h> |
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#include <linux/types.h> |
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#include <devices.h> |
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int gunzip(void *, int, unsigned char *, unsigned long *); |
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#define DMA_SIZE16 2 |
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#include <asm/mach-common/bits/ppi.h> |
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#define NTSC_FRAME_ADDR 0x06000000 |
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#include "video.h" |
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/* NTSC OUTPUT SIZE 720 * 240 */ |
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#define VERTICAL 2 |
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#define HORIZONTAL 4 |
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int is_vblank_line(const int line) |
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{ |
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/*
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* This array contains a single bit for each line in |
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* an NTSC frame. |
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*/ |
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if ((line <= 18) || (line >= 264 && line <= 281) || (line == 528)) |
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return true; |
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return false; |
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} |
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int NTSC_framebuffer_init(char *base_address) |
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{ |
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const int NTSC_frames = 1; |
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const int NTSC_lines = 525; |
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char *dest = base_address; |
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int frame_num, line_num; |
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for (frame_num = 0; frame_num < NTSC_frames; ++frame_num) { |
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for (line_num = 1; line_num <= NTSC_lines; ++line_num) { |
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unsigned int code; |
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int offset = 0; |
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int i; |
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if (is_vblank_line(line_num)) |
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offset++; |
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if (line_num > 266 || line_num < 3) |
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offset += 2; |
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/* Output EAV code */ |
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code = system_code_map[offset].eav; |
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write_dest_byte((char)(code >> 24) & 0xff); |
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write_dest_byte((char)(code >> 16) & 0xff); |
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write_dest_byte((char)(code >> 8) & 0xff); |
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write_dest_byte((char)(code) & 0xff); |
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/* Output horizontal blanking */ |
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for (i = 0; i < 67 * 2; ++i) { |
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write_dest_byte(0x80); |
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write_dest_byte(0x10); |
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} |
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/* Output SAV */ |
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code = system_code_map[offset].sav; |
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write_dest_byte((char)(code >> 24) & 0xff); |
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write_dest_byte((char)(code >> 16) & 0xff); |
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write_dest_byte((char)(code >> 8) & 0xff); |
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write_dest_byte((char)(code) & 0xff); |
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/* Output empty horizontal data */ |
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for (i = 0; i < 360 * 2; ++i) { |
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write_dest_byte(0x80); |
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write_dest_byte(0x10); |
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} |
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} |
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} |
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return dest - base_address; |
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} |
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void fill_frame(char *Frame, int Value) |
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{ |
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int *OddPtr32; |
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int OddLine; |
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int *EvenPtr32; |
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int EvenLine; |
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int i; |
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int *data; |
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int m, n; |
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/* fill odd and even frames */ |
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for (OddLine = 22, EvenLine = 285; OddLine < 263; OddLine++, EvenLine++) { |
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OddPtr32 = (int *)((Frame + (OddLine * 1716)) + 276); |
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EvenPtr32 = (int *)((Frame + (EvenLine * 1716)) + 276); |
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for (i = 0; i < 360; i++, OddPtr32++, EvenPtr32++) { |
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*OddPtr32 = Value; |
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*EvenPtr32 = Value; |
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} |
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} |
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for (m = 0; m < VERTICAL; m++) { |
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data = (int *)u_boot_logo.data; |
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for (OddLine = (22 + m), EvenLine = (285 + m); |
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OddLine < (u_boot_logo.height * VERTICAL) + (22 + m); |
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OddLine += VERTICAL, EvenLine += VERTICAL) { |
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OddPtr32 = (int *)((Frame + ((OddLine) * 1716)) + 276); |
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EvenPtr32 = |
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(int *)((Frame + ((EvenLine) * 1716)) + 276); |
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for (i = 0; i < u_boot_logo.width / 2; i++) { |
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/* enlarge one pixel to m x n */ |
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for (n = 0; n < HORIZONTAL; n++) { |
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*OddPtr32++ = *data; |
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*EvenPtr32++ = *data; |
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} |
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data++; |
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} |
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} |
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} |
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} |
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static void video_init(char *NTSCFrame) |
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{ |
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NTSC_framebuffer_init(NTSCFrame); |
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fill_frame(NTSCFrame, BLUE); |
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bfin_write_PPI_CONTROL(0x0082); |
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bfin_write_PPI_FRAME(0x020D); |
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bfin_write_DMA0_START_ADDR(NTSCFrame); |
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bfin_write_DMA0_X_COUNT(0x035A); |
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bfin_write_DMA0_X_MODIFY(0x0002); |
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bfin_write_DMA0_Y_COUNT(0x020D); |
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bfin_write_DMA0_Y_MODIFY(0x0002); |
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bfin_write_DMA0_CONFIG(0x1015); |
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bfin_write_PPI_CONTROL(0x0083); |
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} |
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int drv_video_init(void) |
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{ |
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device_t videodev; |
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video_init((void *)NTSC_FRAME_ADDR); |
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memset(&videodev, 0, sizeof(videodev)); |
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strcpy(videodev.name, "video"); |
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videodev.ext = DEV_EXT_VIDEO; |
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videodev.flags = DEV_FLAGS_SYSTEM; |
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return device_register(&videodev); |
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} |
@ -0,0 +1,25 @@ |
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#include <video_logo.h> |
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#define write_dest_byte(val) {*dest++=val;} |
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#define BLACK (0x01800180) /* black pixel pattern */ |
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#define BLUE (0x296E29F0) /* blue pixel pattern */ |
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#define RED (0x51F0515A) /* red pixel pattern */ |
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#define MAGENTA (0x6ADE6ACA) /* magenta pixel pattern */ |
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#define GREEN (0x91229136) /* green pixel pattern */ |
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#define CYAN (0xAA10AAA6) /* cyan pixel pattern */ |
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#define YELLOW (0xD292D210) /* yellow pixel pattern */ |
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#define WHITE (0xFE80FE80) /* white pixel pattern */ |
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#define true 1 |
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#define false 0 |
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typedef struct { |
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unsigned int sav; |
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unsigned int eav; |
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} system_code_type; |
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const system_code_type system_code_map[] = { |
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{ 0xFF000080, 0xFF00009D }, |
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{ 0xFF0000AB, 0xFF0000B6 }, |
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{ 0xFF0000C7, 0xFF0000DA }, |
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{ 0xFF0000EC, 0xFF0000F1 }, |
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}; |
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