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/*
* (C) Copyright 2002
* Stäubli Faverges - <www.staubli.com>
* Pierre AUBERT p.aubert@staubli.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
/* Video support for Epson SED13806 chipset */
#include <common.h>
#include <video_fb.h>
#include <sed13806.h>
#define readByte(ptrReg) \
*(volatile unsigned char *)(sed13806.isaBase + ptrReg)
#define writeByte(ptrReg,value) \
*(volatile unsigned char *)(sed13806.isaBase + ptrReg) = value
#define writeWord(ptrReg,value) \
(*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = ((value >> 8 ) & 0xff) | ((value << 8) & 0xff00))
GraphicDevice sed13806;
/*-----------------------------------------------------------------------------
* EpsonSetRegs --
*-----------------------------------------------------------------------------
*/
static void EpsonSetRegs (void)
{
/* the content of the chipset register depends on the board (clocks, ...)*/
const S1D_REGS *preg = board_get_regs ();
while (preg -> Index) {
writeByte (preg -> Index, preg -> Value);
preg ++;
}
}
/*-----------------------------------------------------------------------------
* video_hw_init --
*-----------------------------------------------------------------------------
*/
void *video_hw_init (void)
{
unsigned int *vm, i;
memset (&sed13806, 0, sizeof (GraphicDevice));
/* Initialization of the access to the graphic chipset
Retreive base address of the chipset
(see board/RPXClassic/eccx.c) */
if ((sed13806.isaBase = board_video_init ()) == 0) {
return (NULL);
}
sed13806.frameAdrs = sed13806.isaBase + FRAME_BUFFER_OFFSET;
sed13806.winSizeX = board_get_width ();
sed13806.winSizeY = board_get_height ();
#if defined(CONFIG_VIDEO_SED13806_8BPP)
sed13806.gdfIndex = GDF__8BIT_INDEX;
sed13806.gdfBytesPP = 1;
#elif defined(CONFIG_VIDEO_SED13806_16BPP)
sed13806.gdfIndex = GDF_16BIT_565RGB;
sed13806.gdfBytesPP = 2;
#else
#error Unsupported SED13806 BPP
#endif
sed13806.memSize = sed13806.winSizeX * sed13806.winSizeY * sed13806.gdfBytesPP;
/* Load SED registers */
EpsonSetRegs ();
/* (see board/RPXClassic/RPXClassic.c) */
board_validate_screen (sed13806.isaBase);
/* Clear video memory */
i = sed13806.memSize/4;
vm = (unsigned int *)sed13806.frameAdrs;
while(i--)
*vm++ = 0;
return (&sed13806);
}
/*-----------------------------------------------------------------------------
* Epson_wait_idle -- Wait for hardware to become idle
*-----------------------------------------------------------------------------
*/
static void Epson_wait_idle (void)
{
while (readByte (BLT_CTRL0) & 0x80);
/* Read a word in the BitBLT memory area to shutdown the BitBLT engine */
*(volatile unsigned short *)(sed13806.isaBase + BLT_REG);
}
/*-----------------------------------------------------------------------------
* video_hw_bitblt --
*-----------------------------------------------------------------------------
*/
void video_hw_bitblt (
unsigned int bpp, /* bytes per pixel */
unsigned int src_x, /* source pos x */
unsigned int src_y, /* source pos y */
unsigned int dst_x, /* dest pos x */
unsigned int dst_y, /* dest pos y */
unsigned int dim_x, /* frame width */
unsigned int dim_y /* frame height */
)
{
register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
unsigned long srcAddr, dstAddr;
unsigned int stride = bpp * pGD -> winSizeX;
srcAddr = (src_y * stride) + (src_x * bpp);
dstAddr = (dst_y * stride) + (dst_x * bpp);
Epson_wait_idle ();
writeByte(BLT_ROP,0x0C); /* source */
writeByte(BLT_OP,0x02);/* move blit in positive direction with ROP */
writeWord(BLT_MEM_OFF0, stride / 2);
if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
writeByte(BLT_CTRL1,0x00);
}
else {
writeByte(BLT_CTRL1,0x01);
}
writeWord(BLT_WIDTH0,(dim_x - 1));
writeWord(BLT_HEIGHT0,(dim_y - 1));
/* set up blit registers */
writeByte(BLT_SRC_ADDR0,srcAddr);
writeByte(BLT_SRC_ADDR1,srcAddr>>8);
writeByte(BLT_SRC_ADDR2,srcAddr>>16);
writeByte(BLT_DST_ADDR0,dstAddr);
writeByte(BLT_DST_ADDR1,dstAddr>>8);
writeByte(BLT_DST_ADDR2,dstAddr>>16);
/* Engage the blt engine */
/* rectangular region for src and dst */
writeByte(BLT_CTRL0,0x80);
/* wait untill current blits finished */
Epson_wait_idle ();
}
/*-----------------------------------------------------------------------------
* video_hw_rectfill --
*-----------------------------------------------------------------------------
*/
void video_hw_rectfill (
unsigned int bpp, /* bytes per pixel */
unsigned int dst_x, /* dest pos x */
unsigned int dst_y, /* dest pos y */
unsigned int dim_x, /* frame width */
unsigned int dim_y, /* frame height */
unsigned int color /* fill color */
)
{
register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
unsigned long dstAddr;
unsigned int stride = bpp * pGD -> winSizeX;
dstAddr = (dst_y * stride) + (dst_x * bpp);
Epson_wait_idle ();
/* set up blit registers */
writeByte(BLT_DST_ADDR0,dstAddr);
writeByte(BLT_DST_ADDR1,dstAddr>>8);
writeByte(BLT_DST_ADDR2,dstAddr>>16);
writeWord(BLT_WIDTH0,(dim_x - 1));
writeWord(BLT_HEIGHT0,(dim_y - 1));
writeWord(BLT_FGCOLOR0,color);
writeByte(BLT_OP,0x0C); /* solid fill */
writeWord(BLT_MEM_OFF0,stride / 2);
if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
writeByte(BLT_CTRL1,0x00);
}
else {
writeByte(BLT_CTRL1,0x01);
}
/* Engage the blt engine */
/* rectangular region for src and dst */
writeByte(BLT_CTRL0,0x80);
/* wait untill current blits finished */
Epson_wait_idle ();
}
/*-----------------------------------------------------------------------------
* video_set_lut --
*-----------------------------------------------------------------------------
*/
void video_set_lut (
unsigned int index, /* color number */
unsigned char r, /* red */
unsigned char g, /* green */
unsigned char b /* blue */
)
{
writeByte(REG_LUT_ADDR, index );
writeByte(REG_LUT_DATA, r);
writeByte(REG_LUT_DATA, g);
writeByte(REG_LUT_DATA, b);
}
#ifdef CONFIG_VIDEO_HW_CURSOR
/*-----------------------------------------------------------------------------
* video_set_hw_cursor --
*-----------------------------------------------------------------------------
*/
void video_set_hw_cursor (int x, int y)
{
writeByte (LCD_CURSOR_XL, (x & 0xff));
writeByte (LCD_CURSOR_XM, (x >> 8));
writeByte (LCD_CURSOR_YL, (y & 0xff));
writeByte (LCD_CURSOR_YM, (y >> 8));
}
/*-----------------------------------------------------------------------------
* video_init_hw_cursor --
*-----------------------------------------------------------------------------
*/
void video_init_hw_cursor (int font_width, int font_height)
{
volatile unsigned char *ptr;
unsigned char pattern;
int i;
/* Init cursor content
Cursor size is 64x64 pixels
Start of the cursor memory depends on panel type (dual panel ...) */
if ((i = readByte (LCD_CURSOR_START)) == 0) {
ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - HWCURSORSIZE);
}
else {
ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - (i * 8192));
}
/* Fill the first line and the first empty line after cursor */
for (i = 0, pattern = 0; i < 64; i++) {
if (i < font_width) {
/* Invert background */
pattern |= 0x3;
}
else {
/* Background */
pattern |= 0x2;
}
if ((i & 3) == 3) {
*ptr = pattern;
*(ptr + font_height * 16) = 0xaa;
ptr ++;
pattern = 0;
}
pattern <<= 2;
}
/* Duplicate this line */
for (i = 1; i < font_height; i++) {
memcpy ((void *)ptr, (void *)(ptr - 16), 16);
ptr += 16;
}
for (; i < 64; i++) {
memcpy ((void *)(ptr + 16), (void *)ptr, 16);
ptr += 16;
}
/* Select cursor mode */
writeByte (LCD_CURSOR_CNTL, 1);
}
#endif
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