From 0709f0a5c60b5525ff98708887f5f1e5b0b570c2 Mon Sep 17 00:00:00 2001
From: Maurus Cuelenaere <mcuelenaere@gmail.com>
Date: Mon, 14 Jul 2008 15:03:10 +0000
Subject: Add preliminary support for the Onda VX747 (MIPS target)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18032 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/mips/ingenic_jz47xx/lcd-jz4740.c | 94 ++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100755 firmware/target/mips/ingenic_jz47xx/lcd-jz4740.c

(limited to 'firmware/target/mips/ingenic_jz47xx/lcd-jz4740.c')

diff --git a/firmware/target/mips/ingenic_jz47xx/lcd-jz4740.c b/firmware/target/mips/ingenic_jz47xx/lcd-jz4740.c
new file mode 100755
index 0000000000..429178aeee
--- /dev/null
+++ b/firmware/target/mips/ingenic_jz47xx/lcd-jz4740.c
@@ -0,0 +1,94 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Maurus Cuelenaere
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+ 
+#include "config.h"
+#include "jz4740.h"
+#include "lcd.h"
+#include "lcd-target.h"
+
+static volatile bool _lcd_on = false;
+static volatile bool lcd_poweroff = false;
+
+/* LCD init */
+void lcd_init_device(void)
+{
+    lcd_init_controller();
+    _lcd_on = true;
+}
+
+void lcd_enable(bool state)
+{
+    if(state)
+        lcd_on();
+    else
+        lcd_off();
+    
+    _lcd_on = state;
+}
+
+bool lcd_enabled(void)
+{
+    return _lcd_on;
+}
+
+#define LCDADDR(x, y) ((unsigned int)&lcd_framebuffer[(y)][(x)])
+#define LCD_UNCACHED(addr)	((unsigned int)(addr) | 0xA0000000)
+
+/* Update a fraction of the display. */
+void lcd_update_rect(int x, int y, int width, int height)
+{
+    /* HACKY... */
+    x=0; y=0; width=400; height=240;
+    lcd_set_target(x, y, width-1, height-1);
+    
+    REG_DMAC_DCCSR(0) = 0;
+    REG_DMAC_DRSR(0) = DMAC_DRSR_RS_SLCD; /* source = SLCD */
+    REG_DMAC_DSAR(0) = LCDADDR(x,y) & 0x1FFFFFFF;
+#if 0
+    REG_DMAC_DTAR(0) = LCD_UNCACHED(SLCD_FIFO);
+#else
+    REG_DMAC_DTAR(0) = 0x130500B0; /* SLCD_FIFO */
+#endif
+    REG_DMAC_DTCR(0) = (width*height);
+    
+    REG_DMAC_DCMD(0) = (DMAC_DCMD_SAI | DMAC_DCMD_RDIL_IGN | DMAC_DCMD_SWDH_32 /* (1 << 23) | (0 << 16) | (0 << 14) */
+                       | DMAC_DCMD_DWDH_16 | DMAC_DCMD_DS_16BIT);             /* | (2 << 12) | (3 << 8) */
+    REG_DMAC_DCCSR(0) = (DMAC_DCCSR_NDES | DMAC_DCCSR_EN);                     /* (1 << 31) | (1 << 0) */
+    
+    jz_flush_icache();
+    
+    REG_DMAC_DMACR = DMAC_DMACR_DMAE;
+
+    while( !(REG_DMAC_DCCSR(0) & DMAC_DCCSR_TT) )
+        asm("nop");
+    
+    //REG_DMAC_DCCSR(0) &= ~DMAC_DCCSR_TT;
+}
+
+/* Update the display.
+   This must be called after all other LCD functions that change the display. */
+void lcd_update(void)
+{
+    if (!_lcd_on)
+        return;
+    
+    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+}
-- 
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