drivers/staging/sm750fb/sm750_accel.c

   1 #include <linux/module.h>
   2 #include <linux/kernel.h>
   3 #include <linux/errno.h>
   4 #include <linux/string.h>
   5 #include <linux/mm.h>
   6 #include <linux/slab.h>
   7 #include <linux/delay.h>
   8 #include <linux/fb.h>
   9 #include <linux/ioport.h>
  10 #include <linux/init.h>
  11 #include <linux/pci.h>
  12 #include <linux/vmalloc.h>
  13 #include <linux/pagemap.h>
  14 #include <linux/console.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/screen_info.h>
  17
  18 #include "sm750.h"
  19 #include "sm750_accel.h"
  20 static inline void write_dpr(struct lynx_accel *accel, int offset, u32 regValue)
  21 {
  22         writel(regValue, accel->dprBase + offset);
  23 }
  24
  25 static inline u32 read_dpr(struct lynx_accel *accel, int offset)
  26 {
  27         return readl(accel->dprBase + offset);
  28 }
  29
  30 static inline void write_dpPort(struct lynx_accel *accel, u32 data)
  31 {
  32         writel(data, accel->dpPortBase);
  33 }
  34
  35 void hw_de_init(struct lynx_accel *accel)
  36 {
  37         /* setup 2d engine registers */
  38         u32 reg, clr;
  39
  40         write_dpr(accel, DE_MASKS, 0xFFFFFFFF);
  41
  42         /* dpr1c */
  43         reg =  0x3;
  44
  45         clr = DE_STRETCH_FORMAT_PATTERN_XY | DE_STRETCH_FORMAT_PATTERN_Y_MASK |
  46                 DE_STRETCH_FORMAT_PATTERN_X_MASK |
  47                 DE_STRETCH_FORMAT_ADDRESSING_MASK |
  48                 DE_STRETCH_FORMAT_SOURCE_HEIGHT_MASK;
  49
  50         /* DE_STRETCH bpp format need be initialized in setMode routine */
  51         write_dpr(accel, DE_STRETCH_FORMAT,
  52                   (read_dpr(accel, DE_STRETCH_FORMAT) & ~clr) | reg);
  53
  54         /* disable clipping and transparent */
  55         write_dpr(accel, DE_CLIP_TL, 0); /* dpr2c */
  56         write_dpr(accel, DE_CLIP_BR, 0); /* dpr30 */
  57
  58         write_dpr(accel, DE_COLOR_COMPARE_MASK, 0); /* dpr24 */
  59         write_dpr(accel, DE_COLOR_COMPARE, 0);
  60
  61         clr = DE_CONTROL_TRANSPARENCY | DE_CONTROL_TRANSPARENCY_MATCH |
  62                 DE_CONTROL_TRANSPARENCY_SELECT;
  63
  64         /* dpr0c */
  65         write_dpr(accel, DE_CONTROL, read_dpr(accel, DE_CONTROL) & ~clr);
  66 }
  67
  68 /* set2dformat only be called from setmode functions
  69  * but if you need dual framebuffer driver,need call set2dformat
  70  * every time you use 2d function */
  71
  72 void hw_set2dformat(struct lynx_accel *accel, int fmt)
  73 {
  74         u32 reg;
  75
  76         /* fmt=0,1,2 for 8,16,32,bpp on sm718/750/502 */
  77         reg = read_dpr(accel, DE_STRETCH_FORMAT);
  78         reg &= ~DE_STRETCH_FORMAT_PIXEL_FORMAT_MASK;
  79         reg |= ((fmt << DE_STRETCH_FORMAT_PIXEL_FORMAT_SHIFT) &
  80                 DE_STRETCH_FORMAT_PIXEL_FORMAT_MASK);
  81         write_dpr(accel, DE_STRETCH_FORMAT, reg);
  82 }
  83
  84 int hw_fillrect(struct lynx_accel *accel,
  85                                 u32 base, u32 pitch, u32 Bpp,
  86                                 u32 x, u32 y, u32 width, u32 height,
  87                                 u32 color, u32 rop)
  88 {
  89         u32 deCtrl;
  90
  91         if (accel->de_wait() != 0) {
  92                 /* int time wait and always busy,seems hardware
  93                  * got something error */
  94                 pr_debug("De engine always busy\n");
  95                 return -1;
  96         }
  97
  98         write_dpr(accel, DE_WINDOW_DESTINATION_BASE, base); /* dpr40 */
  99         write_dpr(accel, DE_PITCH,
 100                   ((pitch / Bpp << DE_PITCH_DESTINATION_SHIFT) &
 101                    DE_PITCH_DESTINATION_MASK) |
 102                   (pitch / Bpp & DE_PITCH_SOURCE_MASK)); /* dpr10 */
 103
 104         write_dpr(accel, DE_WINDOW_WIDTH,
 105                   ((pitch / Bpp << DE_WINDOW_WIDTH_DST_SHIFT) &
 106                    DE_WINDOW_WIDTH_DST_MASK) |
 107                    (pitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr44 */
 108
 109         write_dpr(accel, DE_FOREGROUND, color); /* DPR14 */
 110
 111         write_dpr(accel, DE_DESTINATION,
 112                   ((x << DE_DESTINATION_X_SHIFT) & DE_DESTINATION_X_MASK) |
 113                   (y & DE_DESTINATION_Y_MASK)); /* dpr4 */
 114
 115         write_dpr(accel, DE_DIMENSION,
 116                   ((width << DE_DIMENSION_X_SHIFT) & DE_DIMENSION_X_MASK) |
 117                   (height & DE_DIMENSION_Y_ET_MASK)); /* dpr8 */
 118
 119         deCtrl = DE_CONTROL_STATUS | DE_CONTROL_LAST_PIXEL |
 120                 DE_CONTROL_COMMAND_RECTANGLE_FILL | DE_CONTROL_ROP_SELECT |
 121                 (rop & DE_CONTROL_ROP_MASK); /* dpr0xc */
 122
 123         write_dpr(accel, DE_CONTROL, deCtrl);
 124         return 0;
 125 }
 126
 127 int hw_copyarea(
 128 struct lynx_accel *accel,
 129 unsigned int sBase,  /* Address of source: offset in frame buffer */
 130 unsigned int sPitch, /* Pitch value of source surface in BYTE */
 131 unsigned int sx,
 132 unsigned int sy,     /* Starting coordinate of source surface */
 133 unsigned int dBase,  /* Address of destination: offset in frame buffer */
 134 unsigned int dPitch, /* Pitch value of destination surface in BYTE */
 135 unsigned int Bpp,    /* Color depth of destination surface */
 136 unsigned int dx,
 137 unsigned int dy,     /* Starting coordinate of destination surface */
 138 unsigned int width,
 139 unsigned int height, /* width and height of rectangle in pixel value */
 140 unsigned int rop2)   /* ROP value */
 141 {
 142         unsigned int nDirection, de_ctrl;
 143         int opSign;
 144
 145         nDirection = LEFT_TO_RIGHT;
 146         /* Direction of ROP2 operation: 1 = Left to Right, (-1) = Right to Left */
 147         opSign = 1;
 148         de_ctrl = 0;
 149
 150         /* If source and destination are the same surface, need to check for overlay cases */
 151         if (sBase == dBase && sPitch == dPitch) {
 152                 /* Determine direction of operation */
 153                 if (sy < dy) {
 154                         /* +----------+
 155                            |S         |
 156                            |   +----------+
 157                            |   |      |   |
 158                            |   |      |   |
 159                            +---|------+   |
 160                            |         D|
 161                            +----------+ */
 162
 163                         nDirection = BOTTOM_TO_TOP;
 164                 } else if (sy > dy) {
 165                         /* +----------+
 166                            |D         |
 167                            |   +----------+
 168                            |   |      |   |
 169                            |   |      |   |
 170                            +---|------+   |
 171                            |         S|
 172                            +----------+ */
 173
 174                         nDirection = TOP_TO_BOTTOM;
 175                 } else {
 176                         /* sy == dy */
 177
 178                         if (sx <= dx) {
 179                                 /* +------+---+------+
 180                                    |S     |   |     D|
 181                                    |      |   |      |
 182                                    |      |   |      |
 183                                    |      |   |      |
 184                                    +------+---+------+ */
 185
 186                                 nDirection = RIGHT_TO_LEFT;
 187                         } else {
 188                         /* sx > dx */
 189
 190                                 /* +------+---+------+
 191                                    |D     |   |     S|
 192                                    |      |   |      |
 193                                    |      |   |      |
 194                                    |      |   |      |
 195                                    +------+---+------+ */
 196
 197                                 nDirection = LEFT_TO_RIGHT;
 198                         }
 199                 }
 200         }
 201
 202         if ((nDirection == BOTTOM_TO_TOP) || (nDirection == RIGHT_TO_LEFT)) {
 203                 sx += width - 1;
 204                 sy += height - 1;
 205                 dx += width - 1;
 206                 dy += height - 1;
 207                 opSign = (-1);
 208         }
 209
 210         /* Note:
 211            DE_FOREGROUND are DE_BACKGROUND are don't care.
 212           DE_COLOR_COMPARE and DE_COLOR_COMPARE_MAKS are set by set deSetTransparency().
 213          */
 214
 215         /* 2D Source Base.
 216          It is an address offset (128 bit aligned) from the beginning of frame buffer.
 217          */
 218         write_dpr(accel, DE_WINDOW_SOURCE_BASE, sBase); /* dpr40 */
 219
 220         /* 2D Destination Base.
 221          It is an address offset (128 bit aligned) from the beginning of frame buffer.
 222          */
 223         write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dBase); /* dpr44 */
 224
 225     /* Program pitch (distance between the 1st points of two adjacent lines).
 226        Note that input pitch is BYTE value, but the 2D Pitch register uses
 227        pixel values. Need Byte to pixel conversion.
 228     */
 229         write_dpr(accel, DE_PITCH,
 230                   ((dPitch / Bpp << DE_PITCH_DESTINATION_SHIFT) &
 231                    DE_PITCH_DESTINATION_MASK) |
 232                   (sPitch / Bpp & DE_PITCH_SOURCE_MASK)); /* dpr10 */
 233
 234     /* Screen Window width in Pixels.
 235        2D engine uses this value to calculate the linear address in frame buffer for a given point.
 236     */
 237         write_dpr(accel, DE_WINDOW_WIDTH,
 238                   ((dPitch / Bpp << DE_WINDOW_WIDTH_DST_SHIFT) &
 239                    DE_WINDOW_WIDTH_DST_MASK) |
 240                   (sPitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr3c */
 241
 242         if (accel->de_wait() != 0)
 243                 return -1;
 244
 245         {
 246
 247         write_dpr(accel, DE_SOURCE,
 248                   ((sx << DE_SOURCE_X_K1_SHIFT) & DE_SOURCE_X_K1_MASK) |
 249                   (sy & DE_SOURCE_Y_K2_MASK)); /* dpr0 */
 250         write_dpr(accel, DE_DESTINATION,
 251                   ((dx << DE_DESTINATION_X_SHIFT) & DE_DESTINATION_X_MASK) |
 252                   (dy & DE_DESTINATION_Y_MASK)); /* dpr04 */
 253         write_dpr(accel, DE_DIMENSION,
 254                   ((width << DE_DIMENSION_X_SHIFT) & DE_DIMENSION_X_MASK) |
 255                   (height & DE_DIMENSION_Y_ET_MASK)); /* dpr08 */
 256
 257         de_ctrl = (rop2 & DE_CONTROL_ROP_MASK) | DE_CONTROL_ROP_SELECT |
 258                 ((nDirection == RIGHT_TO_LEFT) ? DE_CONTROL_DIRECTION : 0) |
 259                 DE_CONTROL_COMMAND_BITBLT | DE_CONTROL_STATUS;
 260         write_dpr(accel, DE_CONTROL, de_ctrl); /* dpr0c */
 261
 262         }
 263
 264         return 0;
 265 }
 266
 267 static unsigned int deGetTransparency(struct lynx_accel *accel)
 268 {
 269         unsigned int de_ctrl;
 270
 271         de_ctrl = read_dpr(accel, DE_CONTROL);
 272
 273         de_ctrl &= (DE_CONTROL_TRANSPARENCY_MATCH |
 274                     DE_CONTROL_TRANSPARENCY_SELECT | DE_CONTROL_TRANSPARENCY);
 275
 276         return de_ctrl;
 277 }
 278
 279 int hw_imageblit(struct lynx_accel *accel,
 280                  const char *pSrcbuf, /* pointer to start of source buffer in system memory */
 281                  u32 srcDelta,          /* Pitch value (in bytes) of the source buffer, +ive means top down and -ive mean button up */
 282                  u32 startBit, /* Mono data can start at any bit in a byte, this value should be 0 to 7 */
 283                  u32 dBase,    /* Address of destination: offset in frame buffer */
 284                  u32 dPitch,   /* Pitch value of destination surface in BYTE */
 285                  u32 bytePerPixel,      /* Color depth of destination surface */
 286                  u32 dx,
 287                  u32 dy,       /* Starting coordinate of destination surface */
 288                  u32 width,
 289                  u32 height,   /* width and height of rectangle in pixel value */
 290                  u32 fColor,   /* Foreground color (corresponding to a 1 in the monochrome data */
 291                  u32 bColor,   /* Background color (corresponding to a 0 in the monochrome data */
 292                  u32 rop2)     /* ROP value */
 293 {
 294         unsigned int ulBytesPerScan;
 295         unsigned int ul4BytesPerScan;
 296         unsigned int ulBytesRemain;
 297         unsigned int de_ctrl = 0;
 298         unsigned char ajRemain[4];
 299         int i, j;
 300
 301         startBit &= 7; /* Just make sure the start bit is within legal range */
 302         ulBytesPerScan = (width + startBit + 7) / 8;
 303         ul4BytesPerScan = ulBytesPerScan & ~3;
 304         ulBytesRemain = ulBytesPerScan & 3;
 305
 306         if (accel->de_wait() != 0)
 307                 return -1;
 308
 309         /* 2D Source Base.
 310          Use 0 for HOST Blt.
 311          */
 312         write_dpr(accel, DE_WINDOW_SOURCE_BASE, 0);
 313
 314         /* 2D Destination Base.
 315          It is an address offset (128 bit aligned) from the beginning of frame buffer.
 316          */
 317         write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dBase);
 318     /* Program pitch (distance between the 1st points of two adjacent lines).
 319        Note that input pitch is BYTE value, but the 2D Pitch register uses
 320        pixel values. Need Byte to pixel conversion.
 321     */
 322         write_dpr(accel, DE_PITCH,
 323                   ((dPitch / bytePerPixel << DE_PITCH_DESTINATION_SHIFT) &
 324                    DE_PITCH_DESTINATION_MASK) |
 325                   (dPitch / bytePerPixel & DE_PITCH_SOURCE_MASK)); /* dpr10 */
 326
 327         /* Screen Window width in Pixels.
 328          2D engine uses this value to calculate the linear address in frame buffer for a given point.
 329          */
 330         write_dpr(accel, DE_WINDOW_WIDTH,
 331                   ((dPitch / bytePerPixel << DE_WINDOW_WIDTH_DST_SHIFT) &
 332                    DE_WINDOW_WIDTH_DST_MASK) |
 333                   (dPitch / bytePerPixel & DE_WINDOW_WIDTH_SRC_MASK));
 334
 335          /* Note: For 2D Source in Host Write, only X_K1_MONO field is needed, and Y_K2 field is not used.
 336             For mono bitmap, use startBit for X_K1. */
 337         write_dpr(accel, DE_SOURCE,
 338                   (startBit << DE_SOURCE_X_K1_SHIFT) &
 339                   DE_SOURCE_X_K1_MONO_MASK); /* dpr00 */
 340
 341         write_dpr(accel, DE_DESTINATION,
 342                   ((dx << DE_DESTINATION_X_SHIFT) & DE_DESTINATION_X_MASK) |
 343                   (dy & DE_DESTINATION_Y_MASK)); /* dpr04 */
 344
 345         write_dpr(accel, DE_DIMENSION,
 346                   ((width << DE_DIMENSION_X_SHIFT) & DE_DIMENSION_X_MASK) |
 347                   (height & DE_DIMENSION_Y_ET_MASK)); /* dpr08 */
 348
 349         write_dpr(accel, DE_FOREGROUND, fColor);
 350         write_dpr(accel, DE_BACKGROUND, bColor);
 351
 352         de_ctrl = (rop2 & DE_CONTROL_ROP_MASK) |
 353                 DE_CONTROL_ROP_SELECT | DE_CONTROL_COMMAND_HOST_WRITE |
 354                 DE_CONTROL_HOST | DE_CONTROL_STATUS;
 355
 356         write_dpr(accel, DE_CONTROL, de_ctrl | deGetTransparency(accel));
 357
 358         /* Write MONO data (line by line) to 2D Engine data port */
 359         for (i = 0; i < height; i++) {
 360                 /* For each line, send the data in chunks of 4 bytes */
 361                 for (j = 0; j < (ul4BytesPerScan/4); j++)
 362                         write_dpPort(accel, *(unsigned int *)(pSrcbuf + (j * 4)));
 363
 364                 if (ulBytesRemain) {
 365                         memcpy(ajRemain, pSrcbuf+ul4BytesPerScan, ulBytesRemain);
 366                         write_dpPort(accel, *(unsigned int *)ajRemain);
 367                 }
 368
 369                 pSrcbuf += srcDelta;
 370         }
 371
 372             return 0;
 373 }
 374