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rockbox/firmware/target/arm/gigabeat/meg-fx/lcd-meg-fx.c
Greg White 186623e709 Move mono DRMODE optimizations from Gigabeat to all 16-bit targets 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12062 a1c6a512-1295-4272-9138-f99709370657
2007-01-18 02:29:58 +00:00

426 lines
11 KiB
C
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#include "config.h"
#include <string.h>
#include "cpu.h"
#include "lcd.h"
#include "kernel.h"
#include "system.h"
#include "mmu-meg-fx.h"
#include <stdlib.h>
#include "memory.h"
#include "lcd-target.h"
#include "font.h"
#include "rbunicode.h"
#include "bidi.h"
#define LCDADDR(x, y) (&lcd_framebuffer[(y)][(x)])
/*
** We prepare foreground and background fills ahead of time - DMA fills in 16 byte groups
*/
unsigned long fg_pattern_blit[4];
unsigned long bg_pattern_blit[4];
volatile bool use_dma_blit = false;
static volatile bool lcd_on = true;
volatile bool lcd_poweroff = false;
/*
** These are imported from lcd-16bit.c
*/
extern unsigned fg_pattern;
extern unsigned bg_pattern;
bool lcd_enabled()
{
return lcd_on;
}
unsigned int LCDBANK(unsigned int address)
{
return ((address >> 22) & 0xff);
}
unsigned int LCDBASEU(unsigned int address)
{
return (address & ((1 << 22)-1)) >> 1;
}
unsigned int LCDBASEL(unsigned int address)
{
address += 320*240*2;
return (address & ((1 << 22)-1)) >> 1;
}
/* LCD init */
void lcd_init_device(void)
{
LCDSADDR1 = (LCDBANK((unsigned)FRAME) << 21) | (LCDBASEU((unsigned)FRAME));
LCDSADDR2 = LCDBASEL((unsigned)FRAME);
LCDSADDR3 = 0x000000F0;
LCDCON5 |= 1 << 11; /* Switch from 555I mode to 565 mode */
#if !defined(BOOTLOADER)
memset16(fg_pattern_blit, fg_pattern, sizeof(fg_pattern_blit)/2);
memset16(bg_pattern_blit, bg_pattern, sizeof(bg_pattern_blit)/2);
clean_dcache_range((void *)fg_pattern_blit, sizeof(fg_pattern_blit));
clean_dcache_range((void *)bg_pattern_blit, sizeof(bg_pattern_blit));
use_dma_blit = true;
lcd_poweroff = true;
#endif
}
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height)
{
(void)x;
(void)width;
(void)y;
(void)height;
if(!lcd_on)
{
sleep(200);
return;
}
if (use_dma_blit)
{
/* Wait for this controller to stop pending transfer */
while((DSTAT1 & 0x000fffff))
CLKCON |= (1 << 2); /* set IDLE bit */
/* Flush DCache */
invalidate_dcache_range((void *)(((int) &lcd_framebuffer[0][0])+(y * sizeof(fb_data) * LCD_WIDTH)), (height * sizeof(fb_data) * LCD_WIDTH));
/* set DMA dest */
DIDST1 = ((int) FRAME) + (y * sizeof(fb_data) * LCD_WIDTH);
/* FRAME on AHB buf, increment */
DIDSTC1 = 0;
/* Handshake on AHB, Burst transfer, Whole service, Don't reload, transfer 32-bits */
DCON1 = ((1<<30) | (1<<28) | (1<<27) | (1<<22) | (2<<20)) | ((height * sizeof(fb_data) * LCD_WIDTH) >> 4);
/* set DMA source */
DISRC1 = ((int) &lcd_framebuffer[0][0]) + (y * sizeof(fb_data) * LCD_WIDTH) + 0x30000000;
/* memory is on AHB bus, increment addresses */
DISRCC1 = 0x00;
/* Activate the channel */
DMASKTRIG1 = 0x2;
/* Start DMA */
DMASKTRIG1 |= 0x1;
/* Wait for transfer to complete */
while((DSTAT1 & 0x000fffff))
CLKCON |= (1 << 2); /* set IDLE bit */
}
else
memcpy(((char*)FRAME) + (y * sizeof(fb_data) * LCD_WIDTH), ((char *)&lcd_framebuffer) + (y * sizeof(fb_data) * LCD_WIDTH), ((height * sizeof(fb_data) * LCD_WIDTH)));
}
void lcd_enable(bool state)
{
if(!lcd_poweroff)
return;
if(state) {
if(!lcd_on) {
lcd_on = true;
memcpy(FRAME, lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT*2);
LCDCON1 |= 1;
}
}
else {
if(lcd_on) {
lcd_on = false;
LCDCON1 &= ~1;
}
}
}
void lcd_set_foreground(unsigned color)
{
fg_pattern = color;
memset16(fg_pattern_blit, fg_pattern, sizeof(fg_pattern_blit)/2);
invalidate_dcache_range((void *)fg_pattern_blit, sizeof(fg_pattern_blit));
}
void lcd_set_background(unsigned color)
{
bg_pattern = color;
memset16(bg_pattern_blit, bg_pattern, sizeof(bg_pattern_blit)/2);
invalidate_dcache_range((void *)bg_pattern_blit, sizeof(bg_pattern_blit));
}
void lcd_device_prepare_backdrop(fb_data* backdrop)
{
if(backdrop)
invalidate_dcache_range((void *)backdrop, (LCD_HEIGHT * sizeof(fb_data) * LCD_WIDTH));
}
void lcd_clear_display_dma(void)
{
void *src;
bool inc = false;
if(!lcd_on) {
sleep(200);
}
if (lcd_get_drawmode() & DRMODE_INVERSEVID)
src = fg_pattern_blit;
else
{
fb_data* lcd_backdrop = lcd_get_backdrop();
if (!lcd_backdrop)
src = bg_pattern_blit;
else
{
src = lcd_backdrop;
inc = true;
}
}
/* Wait for any pending transfer to complete */
while((DSTAT3 & 0x000fffff))
CLKCON |= (1 << 2); /* set IDLE bit */
DMASKTRIG3 |= 0x4; /* Stop controller */
DIDST3 = ((int) &lcd_framebuffer[0][0]) + 0x30000000; /* set DMA dest, physical address */
DIDSTC3 = 0; /* Dest on AHB, increment */
DISRC3 = ((int) src) + 0x30000000; /* Set source, in physical space */
DISRCC3 = inc ? 0x00 : 0x01; /* memory is on AHB bus, increment addresses based on backdrop */
/* Handshake on AHB, Burst mode, whole service mode, no reload, move 32-bits */
DCON3 = ((1<<30) | (1<<28) | (1<<27) | (1<<22) | (2<<20)) | ((LCD_WIDTH*LCD_HEIGHT*sizeof(fb_data)) >> 4);
/* Dump DCache for dest, we are about to overwrite it with DMA */
invalidate_dcache_range((void *)lcd_framebuffer, sizeof(lcd_framebuffer));
/* Activate the channel */
DMASKTRIG3 = 2;
/* Start DMA */
DMASKTRIG3 |= 1;
/* Wait for transfer to complete */
while((DSTAT3 & 0x000fffff))
CLKCON |= (1 << 2); /* set IDLE bit */
}
void lcd_clear_display(void)
{
lcd_stop_scroll();
if(use_dma_blit)
{
lcd_clear_display_dma();
return;
}
fb_data *dst = &lcd_framebuffer[0][0];
if (lcd_get_drawmode() & DRMODE_INVERSEVID)
{
memset16(dst, fg_pattern, LCD_WIDTH*LCD_HEIGHT);
}
else
{
fb_data* lcd_backdrop = lcd_get_backdrop();
if (!lcd_backdrop)
memset16(dst, bg_pattern, LCD_WIDTH*LCD_HEIGHT);
else
memcpy(dst, lcd_backdrop, sizeof(lcd_framebuffer));
}
}
/* 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_bitmap_transparent_part(const fb_data *src, int src_x, int src_y,
int stride, int x, int y, int width,
int height)
{
fb_data *dst, *dst_end;
unsigned int transcolor;
/* 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 + src_x; /* move starting point */
dst = &lcd_framebuffer[(y)][(x)];
dst_end = dst + height * LCD_WIDTH;
width *= 2;
stride *= 2;
transcolor = TRANSPARENT_COLOR;
asm volatile(
"rowstart: \n"
"mov r0, #0 \n"
"nextpixel: \n"
"ldrh r1, [%0, r0] \n" /* Load word src+r0 */
"cmp r1, %5 \n" /* Compare to transparent color */
"strneh r1, [%1, r0] \n" /* Store dst+r0 if not transparent */
"add r0, r0, #2 \n"
"cmp r0, %2 \n" /* r0 == width? */
"bne nextpixel \n" /* More in this row? */
"add %0, %0, %4 \n" /* src += stride */
"add %1, %1, #480 \n" /* dst += LCD_WIDTH (x2) */
"cmp %1, %3 \n"
"bne rowstart \n" /* if(dst != dst_end), keep going */
: : "r" (src), "r" (dst), "r" (width), "r" (dst_end), "r" (stride), "r" (transcolor) : "r0", "r1" );
}
#define CSUB_X 2
#define CSUB_Y 2
#define RYFAC (31*257)
#define GYFAC (63*257)
#define BYFAC (31*257)
#define RVFAC 11170 /* 31 * 257 * 1.402 */
#define GVFAC (-11563) /* 63 * 257 * -0.714136 */
#define GUFAC (-5572) /* 63 * 257 * -0.344136 */
#define BUFAC 14118 /* 31 * 257 * 1.772 */
#define ROUNDOFFS (127*257)
/* Performance function to blit a YUV bitmap directly to the LCD */
/* For the Gigabeat - show it rotated */
/* So the LCD_WIDTH is now the height */
void lcd_yuv_blit(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height)
{
width = (width + 1) & ~1;
fb_data *dst = (fb_data*)FRAME + x * LCD_WIDTH + (LCD_WIDTH - y) - 1;
fb_data *dst_last = dst - (height - 1);
for (;;)
{
fb_data *dst_row = dst;
int count = width;
const unsigned char *ysrc = src[0] + stride * src_y + src_x;
int y, u, v;
int red, green, blue;
unsigned rbits, gbits, bbits;
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
const unsigned char *usrc = src[1] + (stride/CSUB_X) * (src_y/CSUB_Y)
+ (src_x/CSUB_X);
const unsigned char *vsrc = src[2] + (stride/CSUB_X) * (src_y/CSUB_Y)
+ (src_x/CSUB_X);
int xphase = src_x % CSUB_X;
int rc, gc, bc;
u = *usrc++ - 128;
v = *vsrc++ - 128;
rc = RVFAC * v + ROUNDOFFS;
gc = GVFAC * v + GUFAC * u + ROUNDOFFS;
bc = BUFAC * u + ROUNDOFFS;
do
{
y = *ysrc++;
red = RYFAC * y + rc;
green = GYFAC * y + gc;
blue = BYFAC * y + bc;
if ((unsigned)red > (RYFAC*255+ROUNDOFFS))
{
if (red < 0)
red = 0;
else
red = (RYFAC*255+ROUNDOFFS);
}
if ((unsigned)green > (GYFAC*255+ROUNDOFFS))
{
if (green < 0)
green = 0;
else
green = (GYFAC*255+ROUNDOFFS);
}
if ((unsigned)blue > (BYFAC*255+ROUNDOFFS))
{
if (blue < 0)
blue = 0;
else
blue = (BYFAC*255+ROUNDOFFS);
}
rbits = ((unsigned)red) >> 16 ;
gbits = ((unsigned)green) >> 16 ;
bbits = ((unsigned)blue) >> 16 ;
*dst_row = (rbits << 11) | (gbits << 5) | bbits;
/* next pixel - since rotated, add WIDTH */
dst_row += LCD_WIDTH;
if (++xphase >= CSUB_X)
{
u = *usrc++ - 128;
v = *vsrc++ - 128;
rc = RVFAC * v + ROUNDOFFS;
gc = GVFAC * v + GUFAC * u + ROUNDOFFS;
bc = BUFAC * u + ROUNDOFFS;
xphase = 0;
}
}
while (--count);
if (dst == dst_last) break;
dst--;
src_y++;
}
}
void lcd_set_contrast(int val) {
(void) val;
// TODO:
}
void lcd_set_invert_display(bool yesno) {
(void) yesno;
// TODO:
}
void lcd_blit(const fb_data* data, int bx, int y, int bwidth,
int height, int stride)
{
(void) data;
(void) bx;
(void) y;
(void) bwidth;
(void) height;
(void) stride;
//TODO:
}
void lcd_set_flip(bool yesno) {
(void) yesno;
// TODO:
}
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