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/*
* (C) Copyright 2003-2004
* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include "lcd.h"
int palette_index;
int palette_value;
#ifdef CFG_LCD_ENDIAN
void lcd_setup(int lcd, int config)
{
if (lcd == 0) {
/*
* Set endianess and reset lcd controller 0 (small)
*/
out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD0_RST); /* set reset to low */
udelay(10); /* wait 10us */
if (config == 1) {
out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* big-endian */
} else {
out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD_ENDIAN); /* little-endian */
}
udelay(10); /* wait 10us */
out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD0_RST); /* set reset to high */
} else {
/*
* Set endianess and reset lcd controller 1 (big)
*/
out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD1_RST); /* set reset to low */
udelay(10); /* wait 10us */
if (config == 1) {
out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* big-endian */
} else {
out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD_ENDIAN); /* little-endian */
}
udelay(10); /* wait 10us */
out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD1_RST); /* set reset to high */
}
/*
* CFG_LCD_ENDIAN may also be FPGA_RESET, so set inactive
*/
out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* set reset high again */
}
#endif /* #ifdef CFG_LCD_ENDIAN */
void lcd_init(uchar *lcd_reg, uchar *lcd_mem, S1D_REGS *regs, int reg_count,
uchar *logo_bmp, ulong len)
{
int i;
ushort s1dReg;
uchar s1dValue;
uchar *ptr;
ushort *ptr2;
ushort val;
unsigned char *dst;
int x, y;
int width, height, bpp, colors, line_size;
int header_size;
unsigned char *bmp;
unsigned char r, g, b;
BITMAPINFOHEADER *bm_info;
int reg_byte_swap;
/*
* Detect epson
*/
if (lcd_reg[0] == 0x1c) {
/*
* Big epson detected
*/
reg_byte_swap = FALSE;
palette_index = 0x1e2;
palette_value = 0x1e4;
puts("LCD: S1D13806");
} else if (lcd_reg[1] == 0x1c) {
/*
* Big epson detected (with register swap bug)
*/
reg_byte_swap = TRUE;
palette_index = 0x1e3;
palette_value = 0x1e5;
puts("LCD: S1D13806S");
} else if (lcd_reg[0] == 0x18) {
/*
* Small epson detected (704)
*/
reg_byte_swap = FALSE;
palette_index = 0x15;
palette_value = 0x17;
puts("LCD: S1D13704");
} else if (lcd_reg[0x10000] == 0x24) {
/*
* Small epson detected (705)
*/
reg_byte_swap = FALSE;
palette_index = 0x15;
palette_value = 0x17;
lcd_reg += 0x10000; /* add offset for 705 regs */
puts("LCD: S1D13705");
} else {
puts("LCD: No controller detected!\n");
return;
}
for (i = 0; i<reg_count; i++) {
s1dReg = regs[i].Index;
if (reg_byte_swap) {
if ((s1dReg & 0x0001) == 0)
s1dReg |= 0x0001;
else
s1dReg &= ~0x0001;
}
s1dValue = regs[i].Value;
lcd_reg[s1dReg] = s1dValue;
}
/*
* Decompress bmp image
*/
dst = malloc(CFG_LCD_LOGO_MAX_SIZE);
if (gunzip(dst, CFG_LCD_LOGO_MAX_SIZE, (uchar *)logo_bmp, &len) != 0) {
return;
}
/*
* Check for bmp mark 'BM'
*/
if (*(ushort *)dst != 0x424d) {
printf("LCD: Unknown image format!\n");
free(dst);
return;
}
/*
* Get image info from bmp-header
*/
bm_info = (BITMAPINFOHEADER *)(dst + 14);
bpp = LOAD_SHORT(bm_info->biBitCount);
width = LOAD_LONG(bm_info->biWidth);
height = LOAD_LONG(bm_info->biHeight);
switch (bpp) {
case 1:
colors = 1;
line_size = width >> 3;
break;
case 4:
colors = 16;
line_size = width >> 1;
break;
case 8:
colors = 256;
line_size = width;
break;
case 24:
colors = 0;
line_size = width * 3;
break;
default:
printf("LCD: Unknown bpp (%d) im image!\n", bpp);
free(dst);
return;
}
printf(" (%d*%d, %dbpp)\n", width, height, bpp);
/*
* Write color palette
*/
if (colors <= 256) {
ptr = (unsigned char *)(dst + 14 + 40);
for (i=0; i<colors; i++) {
b = *ptr++;
g = *ptr++;
r = *ptr++;
ptr++;
S1D_WRITE_PALETTE(lcd_reg, i, r, g, b);
}
}
/*
* Write bitmap data into framebuffer
*/
ptr = lcd_mem;
ptr2 = (ushort *)lcd_mem;
header_size = 14 + 40 + 4*colors; /* skip bmp header */
for (y=0; y<height; y++) {
bmp = &dst[(height-1-y)*line_size + header_size];
if (bpp == 24) {
for (x=0; x<width; x++) {
/*
* Generate epson 16bpp fb-format from 24bpp image
*/
b = *bmp++ >> 3;
g = *bmp++ >> 2;
r = *bmp++ >> 3;
val = ((r & 0x1f) << 11) | ((g & 0x3f) << 5) | (b & 0x1f);
*ptr2++ = val;
}
} else {
for (x=0; x<line_size; x++) {
*ptr++ = *bmp++;
}
}
}
free(dst);
}
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