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 --- board/bf533-stamp/Makefile | 9 ++- board/bf533-stamp/video.c | 167 ++++++++++++++++++++++++++++++++++++++++++++ board/bf533-stamp/video.h | 25 +++++++ 3 files changed, 197 insertions(+), 4 deletions(-) create mode 100644 board/bf533-stamp/video.c create mode 100644 board/bf533-stamp/video.h
diff --git a/board/bf533-stamp/Makefile b/board/bf533-stamp/Makefile index 5ae0228..5b5e199 100644 --- a/board/bf533-stamp/Makefile +++ b/board/bf533-stamp/Makefile @@ -1,7 +1,7 @@ # # U-boot - Makefile # -# Copyright (c) 2005-2007 Analog Device Inc. +# Copyright (c) 2005-2008 Analog Device Inc. # # (C) Copyright 2000-2006 # Wolfgang Denk, DENX Software Engineering, wd@denx.de. @@ -29,10 +29,11 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := $(BOARD).o spi_flash.o +COBJS-y := $(BOARD).o spi_flash.o +COBJS-$(CONFIG_VIDEO) += video.o
-SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) -OBJS := $(addprefix $(obj),$(COBJS)) +SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS-y)) SOBJS := $(addprefix $(obj),$(SOBJS))
$(LIB): $(obj).depend $(OBJS) $(SOBJS) $(obj)u-boot.lds diff --git a/board/bf533-stamp/video.c b/board/bf533-stamp/video.c new file mode 100644 index 0000000..3c15eaa --- /dev/null +++ b/board/bf533-stamp/video.c @@ -0,0 +1,167 @@ +/* + * BF533-STAMP splash driver + * + * Copyright (c) 2006-2008 Analog Devices Inc. + * (C) Copyright 2000 + * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it + * (C) Copyright 2002 + * Wolfgang Denk, wd@denx.de + * + * Licensed under the GPL-2 or later. + */ + +#include <stdarg.h> +#include <common.h> +#include <config.h> +#include <malloc.h> +#include <asm/blackfin.h> +#include <asm/mach-common/bits/dma.h> +#include <i2c.h> +#include <linux/types.h> +#include <devices.h> + +int gunzip(void *, int, unsigned char *, unsigned long *); + +#define DMA_SIZE16 2 + +#include <asm/mach-common/bits/ppi.h> + +#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 = system_code_map[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 = system_code_map[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++; + } + } + } +} + +static void video_init(char *NTSCFrame) +{ + NTSC_framebuffer_init(NTSCFrame); + fill_frame(NTSCFrame, BLUE); + + bfin_write_PPI_CONTROL(0x0082); + bfin_write_PPI_FRAME(0x020D); + + bfin_write_DMA0_START_ADDR(NTSCFrame); + bfin_write_DMA0_X_COUNT(0x035A); + bfin_write_DMA0_X_MODIFY(0x0002); + bfin_write_DMA0_Y_COUNT(0x020D); + bfin_write_DMA0_Y_MODIFY(0x0002); + bfin_write_DMA0_CONFIG(0x1015); + bfin_write_PPI_CONTROL(0x0083); +} + +int drv_video_init(void) +{ + device_t videodev; + + video_init((void *)NTSC_FRAME_ADDR); + + memset(&videodev, 0, sizeof(videodev)); + strcpy(videodev.name, "video"); + videodev.ext = DEV_EXT_VIDEO; + videodev.flags = DEV_FLAGS_SYSTEM; + + return device_register(&videodev); +} diff --git a/board/bf533-stamp/video.h b/board/bf533-stamp/video.h new file mode 100644 index 0000000..80837e2 --- /dev/null +++ b/board/bf533-stamp/video.h @@ -0,0 +1,25 @@ +#include <video_logo.h> +#define write_dest_byte(val) {*dest++=val;} +#define BLACK (0x01800180) /* black pixel pattern */ +#define BLUE (0x296E29F0) /* blue pixel pattern */ +#define RED (0x51F0515A) /* red pixel pattern */ +#define MAGENTA (0x6ADE6ACA) /* magenta pixel pattern */ +#define GREEN (0x91229136) /* green pixel pattern */ +#define CYAN (0xAA10AAA6) /* cyan pixel pattern */ +#define YELLOW (0xD292D210) /* yellow pixel pattern */ +#define WHITE (0xFE80FE80) /* white pixel pattern */ + +#define true 1 +#define false 0 + +typedef struct { + unsigned int sav; + unsigned int eav; +} system_code_type; + +const system_code_type system_code_map[] = { + { 0xFF000080, 0xFF00009D }, + { 0xFF0000AB, 0xFF0000B6 }, + { 0xFF0000C7, 0xFF0000DA }, + { 0xFF0000EC, 0xFF0000F1 }, +};