e286b0bbc0
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27188 a1c6a512-1295-4272-9138-f99709370657
523 lines
12 KiB
C
523 lines
12 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) 2007 by Greg White
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* Copyright (C) 2009 by Bob Cousins
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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 <sys/types.h> /* off_t */
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#include "config.h"
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#include "system.h"
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#include "cpu.h"
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#include "string.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "lcd-target.h"
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#define LCDADDR(x, y) (&lcd_framebuffer[(y)][(x)])
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static bool lcd_on = true;
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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static bool lcd_powered = true;
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#endif
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static unsigned lcd_yuv_options = 0;
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/* Copies a rectangle from one framebuffer to another. Can be used in
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single transfer mode with width = num pixels, and height = 1 which
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allows a full-width rectangle to be copied more efficiently. */
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extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
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int width, int height);
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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bool lcd_active(void)
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{
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return lcd_on;
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}
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#endif
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static unsigned int LCDBANK(unsigned int address)
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{
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return ((address >> 22) & 0xff);
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}
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static unsigned int LCDBASEU(unsigned int address)
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{
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return (address & ((1 << 22)-1)) >> 1;
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}
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static unsigned int LCDBASEL(unsigned int address)
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{
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address += 320*240*2;
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return (address & ((1 << 22)-1)) >> 1;
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}
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static inline void delay_cycles(volatile int delay)
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{
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while(delay>0) delay--;
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}
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static void LCD_CTRL_setup(void)
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{
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LCDCON1 = (LCD_CLKVAL << 8) | (LCD_MMODE << 7) | (LCD_PNRMODE << 5) |
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(LCD_BPPMODE << 1);
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LCDCON2 = (LCD_UPPER_MARGIN << 24) | ((LCD_HEIGHT - 1) << 14) |
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(LCD_LOWER_MARGIN << 6) | (LCD_VSYNC_LEN << 0);
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LCDCON3 = (LCD_LEFT_MARGIN << 19) | ((LCD_WIDTH - 1) << 8) |
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(LCD_RIGHT_MARGIN << 0);
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LCDCON4 = (LCD_HSYNC_LEN << 0);
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/* HWSWP = 1, INVVFRAM = 1, INVVLINE = 1, FRM565 = 1, All others = 0 */
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LCDCON5 = 0xB01;
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LCDSADDR1 = (LCDBANK((unsigned)FRAME) << 21) | (LCDBASEU((unsigned)FRAME));
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LCDSADDR2 = LCDBASEL((unsigned)FRAME);
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LCDSADDR3 = 0x000000F0;
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}
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static void LCD_CTRL_clock(bool onoff)
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{
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if(onoff)
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{
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GPCCON &=~0xFFF000FC;
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GPCCON |= 0xAAA000A8;
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GPCUP |= 0xFC0E;
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GPDCON &=~0xFFF0FFF0;
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GPDCON |= 0xAAA0AAA0;
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GPDUP |= 0xFCFC;
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bitset32(&CLKCON, 0x20); /* enable LCD clock */
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LCDCON1 |= LCD_ENVID;
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}
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else
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{
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GPCCON &= ~0xFFF000FC;
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GPCUP &= ~0xFC0E;
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GPDCON &= ~0xFFF0FFF0;
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GPDUP &= ~0xFCFC;
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LCDCON1 &= ~LCD_ENVID; /* Must disable first or bus may freeze */
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bitclr32(&CLKCON, 0x20); /* disable LCD clock */
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}
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}
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#ifdef GIGABEAT_F
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static void reset_LCD(bool reset)
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{
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GPBCON&=~0xC000;
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GPBCON|=0x4000;
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if(reset)
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GPBDAT|=0x80;
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else
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GPBDAT&=~0x80;
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}
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#endif
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/****************************************************************************/
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#ifdef GIGABEAT_F
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static void LCD_SPI_send(const unsigned char *array, int count)
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{
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while (count--)
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{
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while ((SPSTA0&0x01)==0){};
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SPTDAT0=*array++;
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}
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}
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static void LCD_SPI_setreg(unsigned char reg, unsigned char value)
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{
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unsigned char regval[] =
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{
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0x00,reg,0x01,value
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};
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LCD_SPI_send(regval, sizeof(regval));
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}
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static void LCD_SPI_SS(bool select)
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{
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delay_cycles(0x4FFF);
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GPBCON&=~0x30000;
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GPBCON|=0x10000;
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if(select)
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GPBDAT|=0x100;
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else
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GPBDAT&=~0x100;
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}
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static void LCD_SPI_start(void)
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{
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bitset32(&CLKCON, 0x40000); /* enable SPI clock */
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LCD_SPI_SS(false);
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SPCON0=0x3E;
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SPPRE0=24;
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reset_LCD(true);
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LCD_SPI_SS(true);
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}
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static void LCD_SPI_stop(void)
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{
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LCD_SPI_SS(false);
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SPCON0 &= ~0x10;
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bitclr32(&CLKCON, 0x40000); /* disable SPI clock */
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}
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static void LCD_SPI_init(void)
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{
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/*
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* SPI setup - Some of these registers are known; they are documented in
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* the wiki. Many thanks to Alex Gerchanovsky for discovering this
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* sequence.
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*/
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LCD_CTRL_clock(true);
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LCD_SPI_start();
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LCD_SPI_setreg(0x0F, 0x01);
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LCD_SPI_setreg(0x09, 0x06);
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LCD_SPI_setreg(0x16, 0xA6);
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LCD_SPI_setreg(0x1E, 0x49);
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LCD_SPI_setreg(0x1F, 0x26);
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LCD_SPI_setreg(0x0B, 0x2F);
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LCD_SPI_setreg(0x0C, 0x2B);
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LCD_SPI_setreg(0x19, 0x5E);
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LCD_SPI_setreg(0x1A, 0x15);
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LCD_SPI_setreg(0x1B, 0x15);
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LCD_SPI_setreg(0x1D, 0x01);
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LCD_SPI_setreg(0x00, 0x03);
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LCD_SPI_setreg(0x01, 0x10);
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LCD_SPI_setreg(0x02, 0x0A);
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LCD_SPI_setreg(0x06, 0x04); /* Set the orientation */
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LCD_SPI_setreg(0x08, 0x2E);
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LCD_SPI_setreg(0x24, 0x12);
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LCD_SPI_setreg(0x25, 0x3F);
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LCD_SPI_setreg(0x26, 0x0B);
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LCD_SPI_setreg(0x27, 0x00);
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LCD_SPI_setreg(0x28, 0x00);
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LCD_SPI_setreg(0x29, 0xF6);
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LCD_SPI_setreg(0x2A, 0x03);
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LCD_SPI_setreg(0x2B, 0x0A);
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LCD_SPI_setreg(0x04, 0x01); /* Turn the display on */
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LCD_SPI_stop();
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}
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#endif
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/****************************************************************************/
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/* LCD init */
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void lcd_init_device(void)
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{
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#ifdef BOOTLOADER
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int i;
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/* When the Rockbox bootloader starts the framebuffer address is changed
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* but the LCD display should stay the same til an lcd_update() occurs.
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* This copies the data from the old framebuffer to the new one to make the
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* change non-visable to the user.
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*/
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unsigned short *buf = (unsigned short*)(FRAME);
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unsigned short *oldbuf = (unsigned short*)(LCDSADDR1<<1);
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/* The Rockbox bootloader is transitioning from RGB555I to RGB565 mode
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so convert the frambuffer data accordingly */
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for(i=0; i< 320*240; i++)
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{
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*(buf++) = ((*oldbuf>>1) & 0x1F) | (*oldbuf & 0xffc0);
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oldbuf++;
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}
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#endif
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/* Set pins up */
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GPHUP &= 0x600;
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GPECON |= 0x0A800000;
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GPEUP |= 0x3800;
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#ifdef GIGABEAT_F
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GPBUP |= 0x181;
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#endif
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bitset32(&CLKCON, 0x20); /* enable LCD clock */
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LCD_CTRL_setup();
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#ifdef GIGABEAT_F
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LCD_SPI_init();
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#else
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LCD_CTRL_clock(true);
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#endif
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}
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#if defined(HAVE_LCD_SLEEP)
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static void LCD_SPI_powerdown(void)
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{
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lcd_powered = false;
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LCD_SPI_start();
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LCD_SPI_setreg(0x04, 0x00);
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LCD_SPI_stop();
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reset_LCD(false); /* This makes a big difference on power */
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LCD_CTRL_clock(false);
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}
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void lcd_sleep(void)
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{
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if (lcd_powered)
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{
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/* "not powered" implies "disabled" */
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if (lcd_on)
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lcd_enable(false);
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LCD_SPI_powerdown();
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}
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}
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#endif
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#if defined(HAVE_LCD_ENABLE)
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static void LCD_SPI_powerup(void)
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{
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LCD_CTRL_clock(true);
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LCD_SPI_start();
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LCD_SPI_setreg(0x04, 0x01);
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LCD_SPI_stop();
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lcd_powered = true;
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}
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void lcd_enable(bool state)
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{
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if (state == lcd_on)
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return;
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if(state)
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{
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/* "enabled" implies "powered" */
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if (!lcd_powered)
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{
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LCD_SPI_powerup();
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/* Wait long enough for a frame to be written - yes, it
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* takes awhile. */
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sleep(HZ/5);
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}
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lcd_on = true;
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lcd_update();
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send_event(LCD_EVENT_ACTIVATION, NULL);
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}
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else
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{
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lcd_on = false;
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}
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}
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#endif
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#ifdef GIGABEAT_F
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void lcd_set_flip(bool yesno) {
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if (!lcd_on)
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return;
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LCD_SPI_start();
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if(yesno)
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{
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LCD_SPI_setreg(0x06, 0x02);
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}
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else
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{
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LCD_SPI_setreg(0x06, 0x04);
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}
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LCD_SPI_stop();
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}
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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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if (!lcd_on)
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return;
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LCD_SPI_start();
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LCD_SPI_setreg(0x0B, (unsigned char) val);
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LCD_SPI_stop();
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}
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void lcd_set_invert_display(bool yesno) {
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if (!lcd_on)
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return;
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LCD_SPI_start();
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if(yesno)
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{
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LCD_SPI_setreg(0x27, 0x10);
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}
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else
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{
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LCD_SPI_setreg(0x27, 0x00);
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}
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LCD_SPI_stop();
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}
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#else
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void lcd_set_flip(bool yesno)
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{
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(void)yesno;
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/* Not implemented */
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}
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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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/* Not implemented */
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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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/* Not implemented */
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}
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#endif
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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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fb_data *dst, *src;
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if (!lcd_on)
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return;
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if (x + width > LCD_WIDTH)
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width = LCD_WIDTH - x; /* Clip right */
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if (x < 0)
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width += x, x = 0; /* Clip left */
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if (width <= 0)
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return; /* nothing left to do */
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if (y + height > LCD_HEIGHT)
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height = LCD_HEIGHT - y; /* Clip bottom */
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if (y < 0)
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height += y, y = 0; /* Clip top */
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if (height <= 0)
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return; /* nothing left to do */
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/* TODO: It may be faster to swap the addresses of lcd_driver_framebuffer
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* and lcd_framebuffer */
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dst = (fb_data *)FRAME + LCD_WIDTH*y + x;
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src = &lcd_framebuffer[y][x];
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/* Copy part of the Rockbox framebuffer to the second framebuffer */
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if (width < LCD_WIDTH)
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{
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/* Not full width - do line-by-line */
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lcd_copy_buffer_rect(dst, src, width, height);
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}
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else
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{
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/* Full width - copy as one line */
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lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1);
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}
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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_copy_buffer_rect((fb_data *)FRAME, &lcd_framebuffer[0][0],
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LCD_WIDTH*LCD_HEIGHT, 1);
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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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/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
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extern void lcd_write_yuv420_lines(fb_data *dst,
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unsigned char const * const src[3],
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int width,
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int stride);
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extern void lcd_write_yuv420_lines_odither(fb_data *dst,
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unsigned char const * const src[3],
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int width,
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int stride,
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int x_screen, /* To align dither pattern */
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int y_screen);
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/* Performance function to blit a YUV bitmap directly to the LCD */
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/* For the Gigabeat - show it rotated */
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/* So the LCD_WIDTH is now the height */
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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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/* Caches for chroma data so it only need be recaculated every other
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line */
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unsigned char const * yuv_src[3];
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off_t z;
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if (!lcd_on)
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return;
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/* Sorry, but width and height must be >= 2 or else */
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width &= ~1;
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height >>= 1;
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y = LCD_WIDTH - 1 - y;
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fb_data *dst = (fb_data*)FRAME + x * LCD_WIDTH + y;
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z = stride*src_y;
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yuv_src[0] = src[0] + z + src_x;
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yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
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yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
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if (lcd_yuv_options & LCD_YUV_DITHER)
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{
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do
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{
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lcd_write_yuv420_lines_odither(dst, yuv_src, width, stride, y, x);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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yuv_src[1] += stride >> 1; /* Skip down one chroma line */
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yuv_src[2] += stride >> 1;
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dst -= 2;
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y -= 2;
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}
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while (--height > 0);
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}
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else
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{
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do
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{
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lcd_write_yuv420_lines(dst, yuv_src, width, stride);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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yuv_src[1] += stride >> 1; /* Skip down one chroma line */
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yuv_src[2] += stride >> 1;
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dst -= 2;
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}
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while (--height > 0);
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}
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}
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