Blackfin: resurrect BF533-STAMP video splash driver
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>
This commit is contained in:
Mike Frysinger
parent
a750d038f2
commit
fee531eeef
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@ -1,7 +1,7 @@
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#
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# U-boot - Makefile
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#
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# Copyright (c) 2005-2007 Analog Device Inc.
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# Copyright (c) 2005-2008 Analog Device Inc.
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#
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# (C) Copyright 2000-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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@ -29,10 +29,11 @@ include $(TOPDIR)/config.mk
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LIB = $(obj)lib$(BOARD).a
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COBJS := $(BOARD).o spi_flash.o
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COBJS-y := $(BOARD).o spi_flash.o
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COBJS-$(CONFIG_VIDEO) += video.o
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SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS))
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SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS-y))
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SOBJS := $(addprefix $(obj),$(SOBJS))
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$(LIB): $(obj).depend $(OBJS) $(SOBJS) $(obj)u-boot.lds
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@ -0,0 +1,167 @@
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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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}
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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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