forked from len0rd/rockbox
Initial version of iPod greyscale LCD driver from Seven Le Mesle. This is currently written to use vertically-packed mono and native bitmap formats.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8580 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman
parent
c6c584e4c1
commit
e8048cefed
3 changed files with 1002 additions and 13 deletions
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@ -164,3 +164,4 @@ Tim Crist
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Jvo Studer
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Dan Everton
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Imre Herceg
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Seven Le Mesle
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813
firmware/drivers/lcd-2bit-horz.c
Normal file
813
firmware/drivers/lcd-2bit-horz.c
Normal file
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@ -0,0 +1,813 @@
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/***************************************************************************
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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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* LCD driver for horizontally-packed 2bpp greyscale display
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*
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* Based on code from the rockbox lcd's driver
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*
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* Copyright (c) 2006 Seven Le Mesle (sevlm@free.fr)
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 "thread.h"
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#include <string.h>
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#include <stdlib.h>
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#include "file.h"
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#include "debug.h"
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#include "system.h"
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#include "font.h"
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#include "rbunicode.h"
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#include "bidi.h"
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#define SCROLLABLE_LINES 26
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/*** globals ***/
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unsigned char lcd_framebuffer[LCD_HEIGHT][LCD_WIDTH/4] IBSS_ATTR;
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static const unsigned char dibits[16] ICONST_ATTR = {
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0x00, 0x03, 0x0C, 0x0F, 0x30, 0x33, 0x3C, 0x3F,
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0xC0, 0xC3, 0xCC, 0xCF, 0xF0, 0xF3, 0xFC, 0xFF
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};
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static unsigned fg_pattern IDATA_ATTR = 0xFF; /* initially black */
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static unsigned bg_pattern IDATA_ATTR = 0x00; /* initially white */
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static int drawmode = DRMODE_SOLID;
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static int xmargin = 0;
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static int ymargin = 0;
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static int curfont = FONT_SYSFIXED;
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/* scrolling */
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static volatile int scrolling_lines=0; /* Bitpattern of which lines are scrolling */
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static void scroll_thread(void);
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static long scroll_stack[DEFAULT_STACK_SIZE/sizeof(long)];
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static const char scroll_name[] = "scroll";
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static int scroll_ticks = 12; /* # of ticks between updates*/
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static int scroll_delay = HZ/2; /* ticks delay before start */
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static int scroll_step = 6; /* pixels per scroll step */
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static int bidir_limit = 50; /* percent */
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static struct scrollinfo scroll[SCROLLABLE_LINES];
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static const char scroll_tick_table[16] = {
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/* Hz values:
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1, 1.25, 1.55, 2, 2.5, 3.12, 4, 5, 6.25, 8.33, 10, 12.5, 16.7, 20, 25, 33 */
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100, 80, 64, 50, 40, 32, 25, 20, 16, 12, 10, 8, 6, 5, 4, 3
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};
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static unsigned char notmask[4] = { 0xfc, 0xf3, 0xcf, 0x3f };
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/* LCD init */
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void lcd_init(void)
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{
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lcd_clear_display();
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/* Call device specific init */
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lcd_init_device();
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create_thread(scroll_thread, scroll_stack,
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sizeof(scroll_stack), scroll_name);
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}
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/*** parameter handling ***/
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void lcd_set_drawmode(int mode)
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{
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drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
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}
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int lcd_get_drawmode(void)
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{
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return drawmode;
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}
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void lcd_set_foreground(unsigned brightness)
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{
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fg_pattern = 0x55 * (~brightness & 3);
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}
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unsigned lcd_get_foreground(void)
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{
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return ~fg_pattern & 3;
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}
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void lcd_set_background(unsigned brightness)
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{
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bg_pattern = 0x55 * (~brightness & 3);
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}
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unsigned lcd_get_background(void)
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{
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return ~bg_pattern & 3;
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}
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void lcd_set_drawinfo(int mode, unsigned fg_brightness, unsigned bg_brightness)
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{
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lcd_set_drawmode(mode);
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lcd_set_foreground(fg_brightness);
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lcd_set_background(bg_brightness);
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}
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void lcd_setmargins(int x, int y)
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{
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xmargin = x;
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ymargin = y;
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}
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int lcd_getxmargin(void)
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{
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return xmargin;
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}
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int lcd_getymargin(void)
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{
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return ymargin;
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}
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void lcd_setfont(int newfont)
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{
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curfont = newfont;
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}
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int lcd_getstringsize(const unsigned char *str, int *w, int *h)
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{
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return font_getstringsize(str, w, h, curfont);
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}
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/*** low-level drawing functions ***/
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static void setpixel_value(int x, int y, unsigned val)
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{
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unsigned char *data = &lcd_framebuffer[y][x>>2];
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*data = (*data & notmask[x&3]) | (val << ((x&3)<<1));
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}
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static void setpixel(int x, int y)
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{
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unsigned char *data = &lcd_framebuffer[y][x>>2];
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*data = (*data & notmask[x&3]) | (fg_pattern << ((x&3)<<1));
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}
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static void clearpixel(int x, int y)
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{
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unsigned char *data = &lcd_framebuffer[y][x>>2];
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*data = (*data & notmask[x&3]) | (bg_pattern << ((x&3)<<1));
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}
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static void flippixel(int x, int y)
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{
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lcd_framebuffer[y][x>>2] ^= 3 << (2 * (x & 3));
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}
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static void nopixel(int x, int y)
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{
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(void)x;
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(void)y;
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}
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lcd_pixelfunc_type* const lcd_pixelfuncs[8] = {
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flippixel, nopixel, setpixel, setpixel,
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nopixel, clearpixel, nopixel, clearpixel
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};
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/*** drawing functions ***/
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/* Clear the whole display */
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void lcd_clear_display(void)
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{
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unsigned bits = (drawmode & DRMODE_INVERSEVID) ? fg_pattern : bg_pattern;
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memset(lcd_framebuffer, bits, sizeof lcd_framebuffer);
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scrolling_lines = 0;
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}
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/* Set a single pixel */
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void lcd_drawpixel(int x, int y)
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{
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if (((unsigned)x < LCD_WIDTH) && ((unsigned)y < LCD_HEIGHT))
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lcd_pixelfuncs[drawmode](x, y);
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}
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/* Draw a line */
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void lcd_drawline(int x1, int y1, int x2, int y2)
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{
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int numpixels;
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int i;
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int deltax, deltay;
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int d, dinc1, dinc2;
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int x, xinc1, xinc2;
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int y, yinc1, yinc2;
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lcd_pixelfunc_type *pfunc = lcd_pixelfuncs[drawmode];
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deltax = abs(x2 - x1);
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deltay = abs(y2 - y1);
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xinc2 = 1;
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yinc2 = 1;
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if (deltax >= deltay)
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{
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numpixels = deltax;
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d = 2 * deltay - deltax;
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dinc1 = deltay * 2;
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dinc2 = (deltay - deltax) * 2;
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xinc1 = 1;
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yinc1 = 0;
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}
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else
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{
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numpixels = deltay;
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d = 2 * deltax - deltay;
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dinc1 = deltax * 2;
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dinc2 = (deltax - deltay) * 2;
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xinc1 = 0;
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yinc1 = 1;
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}
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numpixels++; /* include endpoints */
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if (x1 > x2)
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{
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xinc1 = -xinc1;
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xinc2 = -xinc2;
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}
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if (y1 > y2)
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{
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yinc1 = -yinc1;
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yinc2 = -yinc2;
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}
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x = x1;
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y = y1;
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for (i = 0; i < numpixels; i++)
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{
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if (((unsigned)x < LCD_WIDTH) && ((unsigned)y < LCD_HEIGHT))
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pfunc(x, y);
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if (d < 0)
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{
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d += dinc1;
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x += xinc1;
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y += yinc1;
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}
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else
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{
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d += dinc2;
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x += xinc2;
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y += yinc2;
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}
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}
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}
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/* Draw a horizontal line (optimised) */
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void lcd_hline(int x1, int x2, int y)
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{
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int x;
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lcd_pixelfunc_type *pfunc = lcd_pixelfuncs[drawmode];
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/* direction flip */
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if (x2 < x1)
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{
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x = x1;
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x1 = x2;
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x2 = x;
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}
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/* nothing to draw? */
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if (((unsigned)y >= LCD_HEIGHT) || (x1 >= LCD_WIDTH) || (x2 < 0))
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return;
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/* clipping */
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if (x1 < 0)
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x1 = 0;
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if (x2 >= LCD_WIDTH)
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x2 = LCD_WIDTH-1;
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while(x1 <= x2) {
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pfunc(x1,y);
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++x1;
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}
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}
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/* Draw a vertical line (optimised) */
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void lcd_vline(int x, int y1, int y2)
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{
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int ny;
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lcd_pixelfunc_type *pfunc = lcd_pixelfuncs[drawmode];
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/* direction flip */
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if (y2 < y1)
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{
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ny = y1;
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y1 = y2;
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y2 = ny;
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}
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/* nothing to draw? */
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if (((unsigned)x >= LCD_WIDTH) || (y1 >= LCD_HEIGHT) || (y2 < 0))
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return;
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/* clipping */
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if (y1 < 0)
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y1 = 0;
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if (y2 >= LCD_HEIGHT)
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y2 = LCD_HEIGHT-1;
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while(y1++ <= y2) {
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pfunc(x, y1);
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}
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}
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/* Draw a rectangular box */
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void lcd_drawrect(int x, int y, int width, int height)
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{
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if ((width <= 0) || (height <= 0))
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return;
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int x2 = x + width - 1;
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int y2 = y + height - 1;
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lcd_vline(x, y, y2);
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lcd_vline(x2, y, y2);
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lcd_hline(x, x2, y);
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lcd_hline(x, x2, y2);
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}
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/* Fill a rectangular area */
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void lcd_fillrect(int x, int y, int width, int height)
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{
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int ny;
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/* nothing to draw? */
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if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
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|| (x + width <= 0) || (y + height <= 0))
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return;
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/* clipping */
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if (x < 0)
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{
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width += x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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y = 0;
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}
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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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ny = y;
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while (ny <= height)
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{
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lcd_hline (x, width, ny);
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ny++;
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}
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}
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/* About Rockbox' internal monochrome bitmap format:
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*
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* A bitmap contains one bit for every pixel that defines if that pixel is
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* black (1) or white (0). Bits within a byte are arranged horizontally, LSB
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* at top.
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* The bytes are stored in row-major order, with byte 0 being top left,
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* byte 1 2nd from left etc. The first row of bytes defines pixel row
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* 0, the second row defines pixel row 1 etc.
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*
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* This is similar to the internal lcd hw format. */
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/* Draw a partial monochrome bitmap */
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void lcd_mono_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height)
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ICODE_ATTR;
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void lcd_mono_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height)
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{
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int ny, nx, ymax;
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const unsigned char * src_end;
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/* nothing to draw? */
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if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
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|| (x + width <= 0) || (y + height <= 0))
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return;
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/* clipping */
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if (x < 0)
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{
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width += x;
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src_x -= x;
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x = 0;
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}
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if (y < 0)
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{
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height += y;
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src_y -= y;
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y = 0;
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}
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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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src += stride * (src_y >> 3) + src_x; /* move starting point */
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src_y &= 7;
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src_end = src + width;
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nx = x;
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do
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{
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const unsigned char *src_col = src++;
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unsigned data = *src_col >> src_y;
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int numbits = 8 - ((int)src_y);
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ymax = y + height;
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ny = y;
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do
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{
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if (data & 0x01)
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setpixel (nx,ny);
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else
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clearpixel (nx,ny);
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ny++;
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data >>= 1;
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if (--numbits == 0)
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{
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src_col += stride;
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data = *src_col;
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numbits = 8;
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}
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}
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while (ny < ymax);
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nx++;
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}
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while (src < src_end);
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}
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/* Draw a full monochrome bitmap */
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void lcd_mono_bitmap(const unsigned char *src, int x, int y, int width, int height)
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{
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lcd_mono_bitmap_part(src, 0, 0, width, x, y, width, height);
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}
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/* About Rockbox' internal native bitmap format:
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*
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* A bitmap contains two bits for every pixel. 00 = white, 01 = light grey,
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* 10 = dark grey, 11 = black. Bits within a byte are arranged vertically, LSB
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* at top.
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* The bytes are stored in row-major order, with byte 0 being top left,
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* byte 1 2nd from left etc. The first row of bytes defines pixel rows
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* 0..3, the second row defines pixel row 4..7 etc.
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*
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* This is the same as the internal lcd hw format. */
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/* Draw a partial native bitmap */
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void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height)
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ICODE_ATTR;
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void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y,
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int stride, int x, int y, int width, int height)
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{
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int ny, nx, ymax;
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const unsigned char * src_end;
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||||
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||||
/* nothing to draw? */
|
||||
if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|
||||
|| (x + width <= 0) || (y + height <= 0))
|
||||
return;
|
||||
|
||||
/* clipping */
|
||||
if (x < 0)
|
||||
{
|
||||
width += x;
|
||||
src_x -= x;
|
||||
x = 0;
|
||||
}
|
||||
if (y < 0)
|
||||
{
|
||||
height += y;
|
||||
src_y -= y;
|
||||
y = 0;
|
||||
}
|
||||
if (x + width > LCD_WIDTH)
|
||||
width = LCD_WIDTH - x;
|
||||
if (y + height > LCD_HEIGHT)
|
||||
height = LCD_HEIGHT - y;
|
||||
|
||||
src += stride * (src_y >> 3) + src_x; /* move starting point */
|
||||
src_y &= 7;
|
||||
src_end = src + width;
|
||||
|
||||
nx = x;
|
||||
do
|
||||
{
|
||||
const unsigned char *src_col = src++;
|
||||
unsigned data = *src_col >> src_y;
|
||||
int numbits = 8 - src_y;
|
||||
|
||||
ymax = y + height;
|
||||
ny = y;
|
||||
do
|
||||
{
|
||||
if (data & 0x03)
|
||||
setpixel_value (nx,ny, 0xFF);
|
||||
else
|
||||
if (data & 0x01)
|
||||
setpixel_value (nx,ny, 0x3F);
|
||||
else
|
||||
if (data & 0x02)
|
||||
setpixel_value (nx,ny, 0xCF);
|
||||
else
|
||||
setpixel_value (nx,ny, 0x00);
|
||||
|
||||
ny++;
|
||||
|
||||
data >>= 2;
|
||||
if (--numbits == 0)
|
||||
{
|
||||
src_col += stride;
|
||||
data = *src_col;
|
||||
numbits = 4;
|
||||
}
|
||||
}
|
||||
while (ny < ymax);
|
||||
nx++;
|
||||
}
|
||||
while (src < src_end);
|
||||
}
|
||||
|
||||
/* Draw a full native bitmap */
|
||||
void lcd_bitmap(const unsigned char *src, int x, int y, int width, int height)
|
||||
{
|
||||
lcd_bitmap_part(src, 0, 0, width, x, y, width, height);
|
||||
}
|
||||
|
||||
/* put a string at a given pixel position, skipping first ofs pixel columns */
|
||||
static void lcd_putsxyofs(int x, int y, int ofs, const unsigned char *str)
|
||||
{
|
||||
unsigned short ch;
|
||||
unsigned short *ucs;
|
||||
struct font* pf = font_get(curfont);
|
||||
|
||||
ucs = bidi_l2v(str, 1);
|
||||
|
||||
while ((ch = *ucs++) != 0 && x < LCD_WIDTH)
|
||||
{
|
||||
int width;
|
||||
const unsigned char *bits;
|
||||
|
||||
/* check input range */
|
||||
if (ch < pf->firstchar || ch >= pf->firstchar+pf->size)
|
||||
ch = pf->defaultchar;
|
||||
ch -= pf->firstchar;
|
||||
|
||||
/* get proportional width and glyph bits */
|
||||
width = font_get_width(pf,ch);
|
||||
|
||||
if (ofs > width)
|
||||
{
|
||||
ofs -= width;
|
||||
continue;
|
||||
}
|
||||
|
||||
bits = font_get_bits(pf, ch);
|
||||
|
||||
lcd_mono_bitmap_part(bits, ofs, 0, width, x, y, width - ofs, pf->height);
|
||||
|
||||
x += width - ofs;
|
||||
ofs = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* put a string at a given pixel position */
|
||||
void lcd_putsxy(int x, int y, const unsigned char *str)
|
||||
{
|
||||
lcd_putsxyofs(x, y, 0, str);
|
||||
}
|
||||
|
||||
/*** line oriented text output ***/
|
||||
|
||||
void lcd_puts_style(int x, int y, const unsigned char *str, int style)
|
||||
{
|
||||
int xpos,ypos,w,h;
|
||||
int lastmode = drawmode;
|
||||
|
||||
/* make sure scrolling is turned off on the line we are updating */
|
||||
scrolling_lines &= ~(1 << y);
|
||||
|
||||
if(!str || !str[0])
|
||||
return;
|
||||
|
||||
lcd_getstringsize(str, &w, &h);
|
||||
xpos = xmargin + x*w / utf8length((char *)str);
|
||||
ypos = ymargin + y*h;
|
||||
lcd_putsxy(xpos, ypos, str);
|
||||
drawmode = (DRMODE_SOLID|DRMODE_INVERSEVID);
|
||||
lcd_fillrect(xpos + w, ypos, LCD_WIDTH - (xpos + w), h);
|
||||
if (style & STYLE_INVERT)
|
||||
{
|
||||
drawmode = DRMODE_COMPLEMENT;
|
||||
lcd_fillrect(xpos, ypos, LCD_WIDTH - xpos, h);
|
||||
}
|
||||
drawmode = lastmode;
|
||||
}
|
||||
|
||||
/* put a string at a given char position */
|
||||
void lcd_puts(int x, int y, const unsigned char *str)
|
||||
{
|
||||
lcd_puts_style(x, y, str, STYLE_DEFAULT);
|
||||
}
|
||||
|
||||
/*** scrolling ***/
|
||||
|
||||
/* Reverse the invert setting of the scrolling line (if any) at given char
|
||||
position. Setting will go into affect next time line scrolls. */
|
||||
void lcd_invertscroll(int x, int y)
|
||||
{
|
||||
struct scrollinfo* s;
|
||||
|
||||
(void)x;
|
||||
|
||||
s = &scroll[y];
|
||||
s->invert = !s->invert;
|
||||
}
|
||||
|
||||
void lcd_stop_scroll(void)
|
||||
{
|
||||
scrolling_lines=0;
|
||||
}
|
||||
|
||||
void lcd_scroll_speed(int speed)
|
||||
{
|
||||
scroll_ticks = scroll_tick_table[speed];
|
||||
}
|
||||
|
||||
void lcd_scroll_step(int step)
|
||||
{
|
||||
scroll_step = step;
|
||||
}
|
||||
|
||||
void lcd_scroll_delay(int ms)
|
||||
{
|
||||
scroll_delay = ms / (HZ / 10);
|
||||
}
|
||||
|
||||
void lcd_bidir_scroll(int percent)
|
||||
{
|
||||
bidir_limit = percent;
|
||||
}
|
||||
|
||||
void lcd_puts_scroll(int x, int y, const unsigned char *string)
|
||||
{
|
||||
lcd_puts_scroll_style(x, y, string, STYLE_DEFAULT);
|
||||
}
|
||||
|
||||
void lcd_puts_scroll_style(int x, int y, const unsigned char *string, int style)
|
||||
{
|
||||
struct scrollinfo* s;
|
||||
int w, h;
|
||||
|
||||
s = &scroll[y];
|
||||
|
||||
s->start_tick = current_tick + scroll_delay;
|
||||
s->invert = false;
|
||||
if (style & STYLE_INVERT) {
|
||||
s->invert = true;
|
||||
lcd_puts_style(x,y,string,STYLE_INVERT);
|
||||
}
|
||||
else
|
||||
lcd_puts(x,y,string);
|
||||
|
||||
lcd_getstringsize(string, &w, &h);
|
||||
|
||||
if (LCD_WIDTH - x * 8 - xmargin < w) {
|
||||
/* prepare scroll line */
|
||||
char *end;
|
||||
|
||||
memset(s->line, 0, sizeof s->line);
|
||||
strcpy(s->line, (char *)string);
|
||||
|
||||
/* get width */
|
||||
s->width = lcd_getstringsize((unsigned char *)s->line, &w, &h);
|
||||
|
||||
/* scroll bidirectional or forward only depending on the string
|
||||
width */
|
||||
if ( bidir_limit ) {
|
||||
s->bidir = s->width < (LCD_WIDTH - xmargin) *
|
||||
(100 + bidir_limit) / 100;
|
||||
}
|
||||
else
|
||||
s->bidir = false;
|
||||
|
||||
if (!s->bidir) { /* add spaces if scrolling in the round */
|
||||
strcat(s->line, " ");
|
||||
/* get new width incl. spaces */
|
||||
s->width = lcd_getstringsize((unsigned char *)s->line, &w, &h);
|
||||
}
|
||||
|
||||
end = strchr(s->line, '\0');
|
||||
strncpy(end, (char *)string, LCD_WIDTH/2);
|
||||
|
||||
s->len = utf8length((char *)string);
|
||||
s->offset = 0;
|
||||
s->startx = x;
|
||||
s->backward = false;
|
||||
scrolling_lines |= (1<<y);
|
||||
}
|
||||
else
|
||||
/* force a bit switch-off since it doesn't scroll */
|
||||
scrolling_lines &= ~(1<<y);
|
||||
}
|
||||
|
||||
static void scroll_thread(void)
|
||||
{
|
||||
struct font* pf;
|
||||
struct scrollinfo* s;
|
||||
int index;
|
||||
int xpos, ypos;
|
||||
int lastmode;
|
||||
|
||||
/* initialize scroll struct array */
|
||||
scrolling_lines = 0;
|
||||
|
||||
while ( 1 ) {
|
||||
for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
|
||||
/* really scroll? */
|
||||
if ( !(scrolling_lines&(1<<index)) )
|
||||
continue;
|
||||
|
||||
s = &scroll[index];
|
||||
|
||||
/* check pause */
|
||||
if (TIME_BEFORE(current_tick, s->start_tick))
|
||||
continue;
|
||||
|
||||
if (s->backward)
|
||||
s->offset -= scroll_step;
|
||||
else
|
||||
s->offset += scroll_step;
|
||||
|
||||
pf = font_get(curfont);
|
||||
xpos = xmargin + s->startx * s->width / s->len;
|
||||
ypos = ymargin + index * pf->height;
|
||||
|
||||
if (s->bidir) { /* scroll bidirectional */
|
||||
if (s->offset <= 0) {
|
||||
/* at beginning of line */
|
||||
s->offset = 0;
|
||||
s->backward = false;
|
||||
s->start_tick = current_tick + scroll_delay * 2;
|
||||
}
|
||||
if (s->offset >= s->width - (LCD_WIDTH - xpos)) {
|
||||
/* at end of line */
|
||||
s->offset = s->width - (LCD_WIDTH - xpos);
|
||||
s->backward = true;
|
||||
s->start_tick = current_tick + scroll_delay * 2;
|
||||
}
|
||||
}
|
||||
else {
|
||||
/* scroll forward the whole time */
|
||||
if (s->offset >= s->width)
|
||||
s->offset %= s->width;
|
||||
}
|
||||
|
||||
lastmode = drawmode;
|
||||
drawmode = (DRMODE_SOLID|DRMODE_INVERSEVID);
|
||||
lcd_fillrect(xpos, ypos, LCD_WIDTH - xpos, pf->height);
|
||||
drawmode = DRMODE_SOLID;
|
||||
lcd_putsxyofs(xpos, ypos, s->offset, (unsigned char *)s->line);
|
||||
if (s->invert)
|
||||
{
|
||||
drawmode = DRMODE_COMPLEMENT;
|
||||
lcd_fillrect(xpos, ypos, LCD_WIDTH - xpos, pf->height);
|
||||
}
|
||||
drawmode = lastmode;
|
||||
lcd_update_rect(xpos, ypos, LCD_WIDTH - xpos, pf->height);
|
||||
}
|
||||
|
||||
sleep(scroll_ticks);
|
||||
}
|
||||
}
|
||||
|
|
@ -29,7 +29,192 @@
|
|||
#include "kernel.h"
|
||||
#include "system.h"
|
||||
|
||||
/*** definitions ***/
|
||||
|
||||
/* check if number of useconds has past */
|
||||
static int timer_check(int clock_start, int usecs)
|
||||
{
|
||||
if ( ((int)(USEC_TIMER - clock_start)) >= usecs ) {
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#if (CONFIG_LCD == LCD_IPOD2BPP)
|
||||
|
||||
/*** hardware configuration ***/
|
||||
|
||||
#define IPOD_LCD_BASE 0xc0001000
|
||||
#define IPOD_LCD_BUSY_MASK 0x80000000
|
||||
|
||||
/* LCD command codes for HD66789R */
|
||||
|
||||
|
||||
#define LCD_CMD 0x08
|
||||
#define LCD_DATA 0x10
|
||||
|
||||
static unsigned int lcd_contrast = 0x6a;
|
||||
|
||||
|
||||
/* wait for LCD with timeout */
|
||||
static void lcd_wait_write(void)
|
||||
{
|
||||
int start = USEC_TIMER;
|
||||
|
||||
do {
|
||||
if ((inl(IPOD_LCD_BASE) & 0x8000) == 0) break;
|
||||
} while (timer_check(start, 1000) == 0);
|
||||
}
|
||||
|
||||
|
||||
/* send LCD data */
|
||||
static void lcd_send_data(int data_lo, int data_hi)
|
||||
{
|
||||
lcd_wait_write();
|
||||
outl(data_lo, IPOD_LCD_BASE + LCD_DATA);
|
||||
lcd_wait_write();
|
||||
outl(data_hi, IPOD_LCD_BASE + LCD_DATA);
|
||||
}
|
||||
|
||||
/* send LCD command */
|
||||
static void lcd_prepare_cmd(int cmd)
|
||||
{
|
||||
lcd_wait_write();
|
||||
|
||||
outl(0x0, IPOD_LCD_BASE + LCD_CMD);
|
||||
lcd_wait_write();
|
||||
outl(cmd, IPOD_LCD_BASE + LCD_CMD);
|
||||
|
||||
}
|
||||
|
||||
/* send LCD command and data */
|
||||
static void lcd_cmd_and_data(int cmd, int data_lo, int data_hi)
|
||||
{
|
||||
lcd_prepare_cmd(cmd);
|
||||
|
||||
lcd_send_data(data_lo, data_hi);
|
||||
}
|
||||
|
||||
int lcd_default_contrast(void)
|
||||
{
|
||||
return 28;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* LCD init
|
||||
**/
|
||||
void lcd_init_device(void){
|
||||
/* driver output control - 160x128 */
|
||||
lcd_cmd_and_data(0x1, 0x1, 0xf);
|
||||
lcd_cmd_and_data(0x5, 0x0, 0x10);
|
||||
}
|
||||
|
||||
/*** update functions ***/
|
||||
/* srccopy bitblt, opcode is currently ignored*/
|
||||
|
||||
/* Performance function that works with an external buffer
|
||||
note that x and bwidtht are in 8-pixel units! */
|
||||
void lcd_blit(const unsigned char* data, int x, int by, int width,
|
||||
int bheight, int stride)
|
||||
{
|
||||
/* TODO implement this on iPod */
|
||||
(void)data;
|
||||
(void)x;
|
||||
(void)by;
|
||||
(void)width;
|
||||
(void)bheight;
|
||||
(void)stride;
|
||||
}
|
||||
|
||||
/* Rolls up the lcd display by the specified amount of lines.
|
||||
* Lines that are rolled out over the top of the screen are
|
||||
* rolled in from the bottom again. This is a hardware
|
||||
* remapping only and all operations on the lcd are affected.
|
||||
* ->
|
||||
* @param int lines - The number of lines that are rolled.
|
||||
* The value must be 0 <= pixels < LCD_HEIGHT. */
|
||||
void lcd_roll(int lines)
|
||||
{
|
||||
/* TODO Implement lcd_roll() */
|
||||
lines &= LCD_HEIGHT-1;
|
||||
}
|
||||
|
||||
/*** hardware configuration ***/
|
||||
|
||||
/* Update the display.
|
||||
This must be called after all other LCD functions that change the display. */
|
||||
void lcd_update(void)
|
||||
{
|
||||
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
|
||||
}
|
||||
|
||||
void lcd_set_contrast(int val)
|
||||
{
|
||||
lcd_cmd_and_data(0x4, 0x4, val);
|
||||
lcd_contrast = val;
|
||||
}
|
||||
|
||||
void lcd_update_rect(int x, int y, int width, int height)
|
||||
{
|
||||
int cursor_pos, xx;
|
||||
int ny;
|
||||
int sx = x, sy = y, mx = width, my = height;
|
||||
|
||||
/* only update the ipod if we are writing to the screen */
|
||||
|
||||
sx >>= 3;
|
||||
//mx = (mx+7)>>3;
|
||||
mx >>= 3;
|
||||
|
||||
cursor_pos = sx + (sy << 5);
|
||||
|
||||
for ( ny = sy; ny <= my; ny++ ) {
|
||||
unsigned char * img_data;
|
||||
|
||||
|
||||
// move the cursor
|
||||
lcd_cmd_and_data(0x11, cursor_pos >> 8, cursor_pos & 0xff);
|
||||
|
||||
// setup for printing
|
||||
lcd_prepare_cmd(0x12);
|
||||
|
||||
img_data = &lcd_framebuffer[ny][sx<<1];
|
||||
|
||||
// 160/8 -> 20 == loops 20 times
|
||||
// make sure we loop at least once
|
||||
for ( xx = sx; xx <= mx; xx++ ) {
|
||||
// display a character
|
||||
lcd_send_data(*(img_data+1), *img_data);
|
||||
|
||||
img_data += 2;
|
||||
}
|
||||
|
||||
// update cursor pos counter
|
||||
cursor_pos += 0x20;
|
||||
}
|
||||
}
|
||||
|
||||
/** Switch on or off the backlight **/
|
||||
void lcd_enable (bool on){
|
||||
int lcd_state;
|
||||
|
||||
lcd_state = inl(IPOD_LCD_BASE);
|
||||
if (on){
|
||||
lcd_state = lcd_state | 0x2;
|
||||
outl(lcd_state, IPOD_LCD_BASE);
|
||||
lcd_cmd_and_data(0x7, 0x0, 0x11);
|
||||
}
|
||||
else {
|
||||
lcd_state = lcd_state & ~0x2;
|
||||
outl(lcd_state, IPOD_LCD_BASE);
|
||||
lcd_cmd_and_data(0x7, 0x0, 0x9);
|
||||
}
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
#define IPOD_LCD_BASE 0x70008a0c
|
||||
#define IPOD_LCD_BUSY_MASK 0x80000000
|
||||
|
||||
|
|
@ -42,17 +227,6 @@
|
|||
/*** globals ***/
|
||||
static int lcd_type = 1; /* 0 = "old" Color/Photo, 1 = "new" Color & Nano */
|
||||
|
||||
|
||||
/* check if number of useconds has past */
|
||||
static inline int timer_check(unsigned long clock_start, unsigned long usecs)
|
||||
{
|
||||
if ( (USEC_TIMER - clock_start) >= usecs ) {
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static void lcd_wait_write(void)
|
||||
{
|
||||
if ((inl(IPOD_LCD_BASE) & IPOD_LCD_BUSY_MASK) != 0) {
|
||||
|
|
@ -288,3 +462,4 @@ void lcd_update(void)
|
|||
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue