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
  29 GraphicDevice sed13806;
  30
  31 /*-----------------------------------------------------------------------------
  32  * EpsonSetRegs --
  33  *-----------------------------------------------------------------------------
  34  */
  35 static 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  */
  49 void *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  */
  99 static 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  */
 111 void 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  */
 163 void 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  */
 211 void 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  */
 228 void 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  */
 240 void 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