e6248f2e5d
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18033 a1c6a512-1295-4272-9138-f99709370657
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 by Maurus Cuelenaere
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "jz4740.h"
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#include "lcd.h"
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#include "lcd-target.h"
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static volatile bool _lcd_on = false;
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static volatile bool lcd_poweroff = false;
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/* LCD init */
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void lcd_init_device(void)
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{
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lcd_init_controller();
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_lcd_on = true;
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}
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void lcd_enable(bool state)
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{
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if(state)
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lcd_on();
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else
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lcd_off();
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_lcd_on = state;
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}
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bool lcd_enabled(void)
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{
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return _lcd_on;
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}
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#define LCDADDR(x, y) ((unsigned int)&lcd_framebuffer[(y)][(x)])
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#define LCD_UNCACHED(addr) ((unsigned int)(addr) | 0xA0000000)
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/* Update a fraction of the display. */
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void lcd_update_rect(int x, int y, int width, int height)
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{
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/* HACKY... */
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x=0; y=0; width=400; height=240;
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lcd_set_target(x, y, width-1, height-1);
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REG_DMAC_DCCSR(0) = 0;
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REG_DMAC_DRSR(0) = DMAC_DRSR_RS_SLCD; /* source = SLCD */
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REG_DMAC_DSAR(0) = LCDADDR(x,y) & 0x1FFFFFFF;
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#if 0
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REG_DMAC_DTAR(0) = LCD_UNCACHED(SLCD_FIFO);
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#else
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REG_DMAC_DTAR(0) = 0x130500B0; /* SLCD_FIFO */
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#endif
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REG_DMAC_DTCR(0) = (width*height);
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REG_DMAC_DCMD(0) = (DMAC_DCMD_SAI | DMAC_DCMD_RDIL_IGN | DMAC_DCMD_SWDH_32 /* (1 << 23) | (0 << 16) | (0 << 14) */
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| DMAC_DCMD_DWDH_16 | DMAC_DCMD_DS_16BIT); /* | (2 << 12) | (3 << 8) */
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REG_DMAC_DCCSR(0) = (DMAC_DCCSR_NDES | DMAC_DCCSR_EN); /* (1 << 31) | (1 << 0) */
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jz_flush_icache();
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REG_DMAC_DMACR = DMAC_DMACR_DMAE;
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while( !(REG_DMAC_DCCSR(0) & DMAC_DCCSR_TT) )
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asm("nop");
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//REG_DMAC_DCCSR(0) &= ~DMAC_DCCSR_TT;
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}
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/* Update the display.
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This must be called after all other LCD functions that change the display. */
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void lcd_update(void)
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{
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if (!_lcd_on)
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return;
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lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
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}
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