LXR uboot/drivers/video/sed13806.c

   1/*
   2 * (C) Copyright 2002
   3 * Stäubli Faverges - <www.staubli.com>
   4 * Pierre AUBERT  p.aubert@staubli.com
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8/* Video support for Epson SED13806 chipset                                  */
   9
  10#include <common.h>
  11
  12#include <video_fb.h>
  13#include <sed13806.h>
  14
  15#define readByte(ptrReg)                \
  16    *(volatile unsigned char *)(sed13806.isaBase + ptrReg)
  17
  18#define writeByte(ptrReg,value) \
  19    *(volatile unsigned char *)(sed13806.isaBase + ptrReg) = value
  20
  21#ifdef CONFIG_TOTAL5200
  22#define writeWord(ptrReg,value) \
  23    (*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = value)
  24#else
  25#define writeWord(ptrReg,value) \
  26    (*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = ((value >> 8 ) & 0xff) | ((value << 8) & 0xff00))
  27#endif
  28
  29GraphicDevice sed13806;
  30
  31/*-----------------------------------------------------------------------------
  32 * EpsonSetRegs --
  33 *-----------------------------------------------------------------------------
  34 */
  35static void EpsonSetRegs (void)
  36{
  37    /* the content of the chipset register depends on the board (clocks, ...)*/
  38    const S1D_REGS *preg = board_get_regs ();
  39    while (preg -> Index) {
  40        writeByte (preg -> Index, preg -> Value);
  41        preg ++;
  42    }
  43}
  44
  45/*-----------------------------------------------------------------------------
  46 * video_hw_init --
  47 *-----------------------------------------------------------------------------
  48 */
  49void *video_hw_init (void)
  50{
  51    unsigned int *vm, i;
  52
  53    memset (&sed13806, 0, sizeof (GraphicDevice));
  54
  55    /* Initialization of the access to the graphic chipset
  56       Retreive base address of the chipset
  57       (see board/RPXClassic/eccx.c)                                         */
  58    if ((sed13806.isaBase = board_video_init ()) == 0) {
  59        return (NULL);
  60    }
  61
  62    sed13806.frameAdrs = sed13806.isaBase + FRAME_BUFFER_OFFSET;
  63    sed13806.winSizeX = board_get_width ();
  64    sed13806.winSizeY = board_get_height ();
  65
  66#if defined(CONFIG_VIDEO_SED13806_8BPP)
  67    sed13806.gdfIndex = GDF__8BIT_INDEX;
  68    sed13806.gdfBytesPP = 1;
  69
  70#elif defined(CONFIG_VIDEO_SED13806_16BPP)
  71    sed13806.gdfIndex = GDF_16BIT_565RGB;
  72    sed13806.gdfBytesPP = 2;
  73
  74#else
  75#error Unsupported SED13806 BPP
  76#endif
  77
  78    sed13806.memSize = sed13806.winSizeX * sed13806.winSizeY * sed13806.gdfBytesPP;
  79
  80    /* Load SED registers                                                    */
  81    EpsonSetRegs ();
  82
  83    /* (see board/RPXClassic/RPXClassic.c)                                   */
  84    board_validate_screen (sed13806.isaBase);
  85
  86    /* Clear video memory */
  87    i = sed13806.memSize/4;
  88    vm = (unsigned int *)sed13806.frameAdrs;
  89    while(i--)
  90        *vm++ = 0;
  91
  92
  93    return (&sed13806);
  94}
  95/*-----------------------------------------------------------------------------
  96 * Epson_wait_idle -- Wait for hardware to become idle
  97 *-----------------------------------------------------------------------------
  98 */
  99static void Epson_wait_idle (void)
 100{
 101    while (readByte (BLT_CTRL0) & 0x80);
 102
 103    /* Read a word in the BitBLT memory area to shutdown the BitBLT engine   */
 104    *(volatile unsigned short *)(sed13806.isaBase + BLT_REG);
 105}
 106
 107/*-----------------------------------------------------------------------------
 108 * video_hw_bitblt --
 109 *-----------------------------------------------------------------------------
 110 */
 111void video_hw_bitblt (
 112    unsigned int bpp,             /* bytes per pixel */
 113    unsigned int src_x,           /* source pos x */
 114    unsigned int src_y,           /* source pos y */
 115    unsigned int dst_x,           /* dest pos x */
 116    unsigned int dst_y,           /* dest pos y */
 117    unsigned int dim_x,           /* frame width */
 118    unsigned int dim_y            /* frame height */
 119    )
 120{
 121    register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
 122    unsigned long       srcAddr, dstAddr;
 123    unsigned int stride = bpp * pGD -> winSizeX;
 124
 125    srcAddr = (src_y * stride) + (src_x * bpp);
 126    dstAddr = (dst_y * stride) + (dst_x * bpp);
 127
 128    Epson_wait_idle ();
 129
 130    writeByte(BLT_ROP,0x0C);    /* source */
 131    writeByte(BLT_OP,0x02);/* move blit in positive direction with ROP */
 132    writeWord(BLT_MEM_OFF0, stride / 2);
 133    if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
 134        writeByte(BLT_CTRL1,0x00);
 135    }
 136    else {
 137        writeByte(BLT_CTRL1,0x01);
 138    }
 139
 140    writeWord(BLT_WIDTH0,(dim_x - 1));
 141    writeWord(BLT_HEIGHT0,(dim_y - 1));
 142
 143    /* set up blit registers                                                 */
 144    writeByte(BLT_SRC_ADDR0,srcAddr);
 145    writeByte(BLT_SRC_ADDR1,srcAddr>>8);
 146    writeByte(BLT_SRC_ADDR2,srcAddr>>16);
 147
 148    writeByte(BLT_DST_ADDR0,dstAddr);
 149    writeByte(BLT_DST_ADDR1,dstAddr>>8);
 150    writeByte(BLT_DST_ADDR2,dstAddr>>16);
 151
 152    /* Engage the blt engine                                                 */
 153    /* rectangular region for src and dst                                    */
 154    writeByte(BLT_CTRL0,0x80);
 155
 156    /* wait untill current blits finished                                    */
 157    Epson_wait_idle ();
 158}
 159/*-----------------------------------------------------------------------------
 160 * video_hw_rectfill --
 161 *-----------------------------------------------------------------------------
 162 */
 163void video_hw_rectfill (
 164    unsigned int bpp,             /* bytes per pixel */
 165    unsigned int dst_x,           /* dest pos x */
 166    unsigned int dst_y,           /* dest pos y */
 167    unsigned int dim_x,           /* frame width */
 168    unsigned int dim_y,           /* frame height */
 169    unsigned int color            /* fill color */
 170     )
 171{
 172    register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
 173    unsigned long       dstAddr;
 174    unsigned int stride = bpp * pGD -> winSizeX;
 175
 176    dstAddr = (dst_y * stride) + (dst_x * bpp);
 177
 178    Epson_wait_idle ();
 179
 180    /* set up blit registers                                                 */
 181    writeByte(BLT_DST_ADDR0,dstAddr);
 182    writeByte(BLT_DST_ADDR1,dstAddr>>8);
 183    writeByte(BLT_DST_ADDR2,dstAddr>>16);
 184
 185    writeWord(BLT_WIDTH0,(dim_x - 1));
 186    writeWord(BLT_HEIGHT0,(dim_y - 1));
 187    writeWord(BLT_FGCOLOR0,color);
 188
 189    writeByte(BLT_OP,0x0C);  /* solid fill                                   */
 190    writeWord(BLT_MEM_OFF0,stride / 2);
 191
 192    if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
 193        writeByte(BLT_CTRL1,0x00);
 194    }
 195    else {
 196        writeByte(BLT_CTRL1,0x01);
 197    }
 198
 199    /* Engage the blt engine                                                 */
 200    /* rectangular region for src and dst                                    */
 201    writeByte(BLT_CTRL0,0x80);
 202
 203    /* wait untill current blits finished                                    */
 204    Epson_wait_idle ();
 205}
 206
 207/*-----------------------------------------------------------------------------
 208 * video_set_lut --
 209 *-----------------------------------------------------------------------------
 210 */
 211void video_set_lut (
 212    unsigned int index,           /* color number */
 213    unsigned char r,              /* red */
 214    unsigned char g,              /* green */
 215    unsigned char b               /* blue */
 216    )
 217{
 218    writeByte(REG_LUT_ADDR, index );
 219    writeByte(REG_LUT_DATA, r);
 220    writeByte(REG_LUT_DATA, g);
 221    writeByte(REG_LUT_DATA, b);
 222}
 223#ifdef CONFIG_VIDEO_HW_CURSOR
 224/*-----------------------------------------------------------------------------
 225 * video_set_hw_cursor --
 226 *-----------------------------------------------------------------------------
 227 */
 228void video_set_hw_cursor (int x, int y)
 229{
 230    writeByte (LCD_CURSOR_XL, (x & 0xff));
 231    writeByte (LCD_CURSOR_XM, (x >> 8));
 232    writeByte (LCD_CURSOR_YL, (y & 0xff));
 233    writeByte (LCD_CURSOR_YM, (y >> 8));
 234}
 235
 236/*-----------------------------------------------------------------------------
 237 * video_init_hw_cursor --
 238 *-----------------------------------------------------------------------------
 239 */
 240void video_init_hw_cursor (int font_width, int font_height)
 241{
 242    volatile unsigned char *ptr;
 243    unsigned char pattern;
 244    int i;
 245
 246
 247    /* Init cursor content
 248       Cursor size is 64x64 pixels
 249       Start of the cursor memory depends on panel type (dual panel ...)     */
 250    if ((i = readByte (LCD_CURSOR_START)) == 0) {
 251        ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - HWCURSORSIZE);
 252    }
 253    else {
 254        ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - (i * 8192));
 255    }
 256
 257    /* Fill the first line and the first empty line after cursor             */
 258    for (i = 0, pattern = 0; i < 64; i++) {
 259        if (i < font_width) {
 260            /* Invert background                                             */
 261            pattern |= 0x3;
 262
 263        }
 264        else {
 265            /* Background                                                    */
 266            pattern |= 0x2;
 267        }
 268        if ((i & 3) == 3) {
 269            *ptr = pattern;
 270            *(ptr + font_height * 16) = 0xaa;
 271            ptr ++;
 272            pattern = 0;
 273        }
 274        pattern <<= 2;
 275    }
 276
 277    /* Duplicate this line                                                   */
 278    for (i = 1; i < font_height; i++) {
 279        memcpy ((void *)ptr, (void *)(ptr - 16), 16);
 280        ptr += 16;
 281    }
 282
 283    for (; i < 64; i++) {
 284        memcpy ((void *)(ptr + 16), (void *)ptr, 16);
 285        ptr += 16;
 286    }
 287
 288    /* Select cursor mode                                                    */
 289    writeByte (LCD_CURSOR_CNTL, 1);
 290}
 291#endif
 292