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>

diff --git a/board/bf533-stamp/Makefile b/board/bf533-stamp/Makefile
index 5ae022885e4a9630fce4e5ae0d6b966271b512df..5b5e199974a8b7993f2c2793c115e5aaa1f5dfd4 100644 (file)
--- 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 (file)
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 (file)
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 },
+};