6908cc5235
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24112 a1c6a512-1295-4272-9138-f99709370657
159 lines
3.6 KiB
C
159 lines
3.6 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) 2009 by Mark Arigo
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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 "cpu.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "system.h"
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/* Display status */
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static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
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/* wait for LCD */
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static inline void lcd_wait_write(void)
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{
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int i = 0;
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while (LCD2_PORT & LCD2_BUSY_MASK)
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{
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if (i < 2000)
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i++;
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else
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LCD2_PORT &= ~LCD2_BUSY_MASK;
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}
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}
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/* send LCD data */
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static void lcd_send_data(unsigned data)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_DATA_MASK | (data & 0xff);
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}
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/* send LCD command */
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static void lcd_send_cmd(unsigned cmd)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_CMD_MASK | (cmd & 0xff);
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lcd_wait_write();
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}
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static inline void lcd_send_pixel(unsigned pixel)
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{
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lcd_send_data(pixel >> 8);
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lcd_send_data(pixel);
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}
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void lcd_init_device(void)
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{
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/* init handled by the OF bootloader */
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}
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/*** hardware configuration ***/
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int lcd_default_contrast(void)
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{
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return DEFAULT_CONTRAST_SETTING;
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}
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void lcd_set_contrast(int val)
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{
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(void)val;
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}
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void lcd_set_invert_display(bool yesno)
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{
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(void)yesno;
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}
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/* turn the display upside down (call lcd_update() afterwards) */
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void lcd_set_flip(bool yesno)
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{
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(void)yesno;
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}
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void lcd_yuv_set_options(unsigned options)
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{
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lcd_yuv_options = options;
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}
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/* Performance function to blit a YUV bitmap directly to the LCD */
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void lcd_blit_yuv(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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(void)src;
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(void)src_x;
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(void)src_y;
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(void)stride;
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(void)x;
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(void)y;
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(void)width;
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(void)height;
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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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lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
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}
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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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const fb_data *addr;
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if (x + width >= LCD_WIDTH)
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width = LCD_WIDTH - x;
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if (y + height >= LCD_HEIGHT)
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height = LCD_HEIGHT - y;
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if ((width <= 0) || (height <= 0))
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return; /* Nothing left to do. */
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addr = &lcd_framebuffer[y][x];
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lcd_send_cmd(0x01);
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lcd_send_data(0x48);
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lcd_send_cmd(0x05);
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lcd_send_data(0x0f);
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lcd_send_cmd(0x08);
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lcd_send_data(y);
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lcd_send_cmd(0x09);
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lcd_send_data(y + height - 1);
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lcd_send_cmd(0x0a);
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lcd_send_data(x + 16);
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lcd_send_cmd(0x0b);
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lcd_send_data(x + width - 1 + 16);
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lcd_send_cmd(0x06);
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do {
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int w = width;
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do {
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lcd_send_pixel(*addr++);
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} while (--w > 0);
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addr += LCD_WIDTH - width;
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} while (--height > 0);
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}
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