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https://github.com/AsahiLinux/u-boot
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307 lines
9.7 KiB
C
307 lines
9.7 KiB
C
/*
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* (C) Copyright 2002
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* Stäubli Faverges - <www.staubli.com>
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* Pierre AUBERT p.aubert@staubli.com
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* Video support for Epson SED13806 chipset */
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#include <common.h>
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#include <video_fb.h>
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#include <sed13806.h>
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#define readByte(ptrReg) \
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*(volatile unsigned char *)(sed13806.isaBase + ptrReg)
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#define writeByte(ptrReg,value) \
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*(volatile unsigned char *)(sed13806.isaBase + ptrReg) = value
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#ifdef CONFIG_TOTAL5200
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#define writeWord(ptrReg,value) \
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(*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = value)
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#else
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#define writeWord(ptrReg,value) \
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(*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = ((value >> 8 ) & 0xff) | ((value << 8) & 0xff00))
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#endif
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GraphicDevice sed13806;
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/*-----------------------------------------------------------------------------
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* EpsonSetRegs --
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*-----------------------------------------------------------------------------
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*/
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static void EpsonSetRegs (void)
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{
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/* the content of the chipset register depends on the board (clocks, ...)*/
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const S1D_REGS *preg = board_get_regs ();
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while (preg -> Index) {
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writeByte (preg -> Index, preg -> Value);
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preg ++;
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}
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}
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/*-----------------------------------------------------------------------------
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* video_hw_init --
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*-----------------------------------------------------------------------------
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*/
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void *video_hw_init (void)
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{
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unsigned int *vm, i;
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memset (&sed13806, 0, sizeof (GraphicDevice));
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/* Initialization of the access to the graphic chipset
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Retreive base address of the chipset
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(see board/RPXClassic/eccx.c) */
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if ((sed13806.isaBase = board_video_init ()) == 0) {
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return (NULL);
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}
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sed13806.frameAdrs = sed13806.isaBase + FRAME_BUFFER_OFFSET;
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sed13806.winSizeX = board_get_width ();
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sed13806.winSizeY = board_get_height ();
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#if defined(CONFIG_VIDEO_SED13806_8BPP)
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sed13806.gdfIndex = GDF__8BIT_INDEX;
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sed13806.gdfBytesPP = 1;
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#elif defined(CONFIG_VIDEO_SED13806_16BPP)
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sed13806.gdfIndex = GDF_16BIT_565RGB;
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sed13806.gdfBytesPP = 2;
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#else
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#error Unsupported SED13806 BPP
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#endif
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sed13806.memSize = sed13806.winSizeX * sed13806.winSizeY * sed13806.gdfBytesPP;
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/* Load SED registers */
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EpsonSetRegs ();
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/* (see board/RPXClassic/RPXClassic.c) */
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board_validate_screen (sed13806.isaBase);
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/* Clear video memory */
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i = sed13806.memSize/4;
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vm = (unsigned int *)sed13806.frameAdrs;
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while(i--)
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*vm++ = 0;
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return (&sed13806);
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}
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/*-----------------------------------------------------------------------------
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* Epson_wait_idle -- Wait for hardware to become idle
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*-----------------------------------------------------------------------------
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*/
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static void Epson_wait_idle (void)
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{
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while (readByte (BLT_CTRL0) & 0x80);
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/* Read a word in the BitBLT memory area to shutdown the BitBLT engine */
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*(volatile unsigned short *)(sed13806.isaBase + BLT_REG);
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}
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/*-----------------------------------------------------------------------------
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* video_hw_bitblt --
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*-----------------------------------------------------------------------------
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*/
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void video_hw_bitblt (
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unsigned int bpp, /* bytes per pixel */
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unsigned int src_x, /* source pos x */
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unsigned int src_y, /* source pos y */
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unsigned int dst_x, /* dest pos x */
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unsigned int dst_y, /* dest pos y */
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unsigned int dim_x, /* frame width */
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unsigned int dim_y /* frame height */
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)
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{
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register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
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unsigned long srcAddr, dstAddr;
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unsigned int stride = bpp * pGD -> winSizeX;
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srcAddr = (src_y * stride) + (src_x * bpp);
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dstAddr = (dst_y * stride) + (dst_x * bpp);
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Epson_wait_idle ();
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writeByte(BLT_ROP,0x0C); /* source */
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writeByte(BLT_OP,0x02);/* move blit in positive direction with ROP */
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writeWord(BLT_MEM_OFF0, stride / 2);
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if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
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writeByte(BLT_CTRL1,0x00);
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}
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else {
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writeByte(BLT_CTRL1,0x01);
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}
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writeWord(BLT_WIDTH0,(dim_x - 1));
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writeWord(BLT_HEIGHT0,(dim_y - 1));
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/* set up blit registers */
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writeByte(BLT_SRC_ADDR0,srcAddr);
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writeByte(BLT_SRC_ADDR1,srcAddr>>8);
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writeByte(BLT_SRC_ADDR2,srcAddr>>16);
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writeByte(BLT_DST_ADDR0,dstAddr);
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writeByte(BLT_DST_ADDR1,dstAddr>>8);
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writeByte(BLT_DST_ADDR2,dstAddr>>16);
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/* Engage the blt engine */
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/* rectangular region for src and dst */
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writeByte(BLT_CTRL0,0x80);
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/* wait untill current blits finished */
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Epson_wait_idle ();
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}
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/*-----------------------------------------------------------------------------
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* video_hw_rectfill --
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*-----------------------------------------------------------------------------
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*/
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void video_hw_rectfill (
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unsigned int bpp, /* bytes per pixel */
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unsigned int dst_x, /* dest pos x */
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unsigned int dst_y, /* dest pos y */
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unsigned int dim_x, /* frame width */
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unsigned int dim_y, /* frame height */
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unsigned int color /* fill color */
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)
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{
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register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
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unsigned long dstAddr;
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unsigned int stride = bpp * pGD -> winSizeX;
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dstAddr = (dst_y * stride) + (dst_x * bpp);
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Epson_wait_idle ();
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/* set up blit registers */
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writeByte(BLT_DST_ADDR0,dstAddr);
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writeByte(BLT_DST_ADDR1,dstAddr>>8);
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writeByte(BLT_DST_ADDR2,dstAddr>>16);
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writeWord(BLT_WIDTH0,(dim_x - 1));
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writeWord(BLT_HEIGHT0,(dim_y - 1));
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writeWord(BLT_FGCOLOR0,color);
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writeByte(BLT_OP,0x0C); /* solid fill */
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writeWord(BLT_MEM_OFF0,stride / 2);
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if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
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writeByte(BLT_CTRL1,0x00);
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}
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else {
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writeByte(BLT_CTRL1,0x01);
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}
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/* Engage the blt engine */
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/* rectangular region for src and dst */
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writeByte(BLT_CTRL0,0x80);
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/* wait untill current blits finished */
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Epson_wait_idle ();
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}
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/*-----------------------------------------------------------------------------
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* video_set_lut --
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*-----------------------------------------------------------------------------
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*/
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void video_set_lut (
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unsigned int index, /* color number */
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unsigned char r, /* red */
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unsigned char g, /* green */
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unsigned char b /* blue */
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)
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{
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writeByte(REG_LUT_ADDR, index );
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writeByte(REG_LUT_DATA, r);
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writeByte(REG_LUT_DATA, g);
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writeByte(REG_LUT_DATA, b);
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}
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#ifdef CONFIG_VIDEO_HW_CURSOR
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/*-----------------------------------------------------------------------------
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* video_set_hw_cursor --
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*-----------------------------------------------------------------------------
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*/
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void video_set_hw_cursor (int x, int y)
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{
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writeByte (LCD_CURSOR_XL, (x & 0xff));
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writeByte (LCD_CURSOR_XM, (x >> 8));
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writeByte (LCD_CURSOR_YL, (y & 0xff));
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writeByte (LCD_CURSOR_YM, (y >> 8));
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}
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/*-----------------------------------------------------------------------------
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* video_init_hw_cursor --
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*-----------------------------------------------------------------------------
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*/
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void video_init_hw_cursor (int font_width, int font_height)
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{
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volatile unsigned char *ptr;
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unsigned char pattern;
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int i;
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/* Init cursor content
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Cursor size is 64x64 pixels
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Start of the cursor memory depends on panel type (dual panel ...) */
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if ((i = readByte (LCD_CURSOR_START)) == 0) {
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ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - HWCURSORSIZE);
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}
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else {
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ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - (i * 8192));
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}
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/* Fill the first line and the first empty line after cursor */
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for (i = 0, pattern = 0; i < 64; i++) {
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if (i < font_width) {
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/* Invert background */
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pattern |= 0x3;
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}
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else {
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/* Background */
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pattern |= 0x2;
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}
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if ((i & 3) == 3) {
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*ptr = pattern;
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*(ptr + font_height * 16) = 0xaa;
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ptr ++;
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pattern = 0;
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}
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pattern <<= 2;
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}
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/* Duplicate this line */
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for (i = 1; i < font_height; i++) {
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memcpy ((void *)ptr, (void *)(ptr - 16), 16);
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ptr += 16;
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}
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for (; i < 64; i++) {
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memcpy ((void *)(ptr + 16), (void *)ptr, 16);
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ptr += 16;
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}
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/* Select cursor mode */
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writeByte (LCD_CURSOR_CNTL, 1);
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}
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#endif
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