1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/module.h> 3 #include <linux/kernel.h> 4 #include <linux/errno.h> 5 #include <linux/string.h> 6 #include <linux/mm.h> 7 #include <linux/slab.h> 8 #include <linux/delay.h> 9 #include <linux/fb.h> 10 #include <linux/ioport.h> 11 #include <linux/init.h> 12 #include <linux/pci.h> 13 #include <linux/vmalloc.h> 14 #include <linux/pagemap.h> 15 #include <linux/console.h> 16 #include <linux/platform_device.h> 17 #include <linux/screen_info.h> 18 19 #include "sm750.h" 20 #include "sm750_accel.h" 21 static inline void write_dpr(struct lynx_accel *accel, int offset, u32 regValue) 22 { 23 writel(regValue, accel->dprBase + offset); 24 } 25 26 static inline u32 read_dpr(struct lynx_accel *accel, int offset) 27 { 28 return readl(accel->dprBase + offset); 29 } 30 31 static inline void write_dpPort(struct lynx_accel *accel, u32 data) 32 { 33 writel(data, accel->dpPortBase); 34 } 35 36 void sm750_hw_de_init(struct lynx_accel *accel) 37 { 38 /* setup 2d engine registers */ 39 u32 reg, clr; 40 41 write_dpr(accel, DE_MASKS, 0xFFFFFFFF); 42 43 /* dpr1c */ 44 reg = 0x3; 45 46 clr = DE_STRETCH_FORMAT_PATTERN_XY | 47 DE_STRETCH_FORMAT_PATTERN_Y_MASK | 48 DE_STRETCH_FORMAT_PATTERN_X_MASK | 49 DE_STRETCH_FORMAT_ADDRESSING_MASK | 50 DE_STRETCH_FORMAT_SOURCE_HEIGHT_MASK; 51 52 /* DE_STRETCH bpp format need be initialized in setMode routine */ 53 write_dpr(accel, DE_STRETCH_FORMAT, 54 (read_dpr(accel, DE_STRETCH_FORMAT) & ~clr) | reg); 55 56 /* disable clipping and transparent */ 57 write_dpr(accel, DE_CLIP_TL, 0); /* dpr2c */ 58 write_dpr(accel, DE_CLIP_BR, 0); /* dpr30 */ 59 60 write_dpr(accel, DE_COLOR_COMPARE_MASK, 0); /* dpr24 */ 61 write_dpr(accel, DE_COLOR_COMPARE, 0); 62 63 clr = DE_CONTROL_TRANSPARENCY | DE_CONTROL_TRANSPARENCY_MATCH | 64 DE_CONTROL_TRANSPARENCY_SELECT; 65 66 /* dpr0c */ 67 write_dpr(accel, DE_CONTROL, read_dpr(accel, DE_CONTROL) & ~clr); 68 } 69 70 /* 71 * set2dformat only be called from setmode functions 72 * but if you need dual framebuffer driver,need call set2dformat 73 * every time you use 2d function 74 */ 75 76 void sm750_hw_set2dformat(struct lynx_accel *accel, int fmt) 77 { 78 u32 reg; 79 80 /* fmt=0,1,2 for 8,16,32,bpp on sm718/750/502 */ 81 reg = read_dpr(accel, DE_STRETCH_FORMAT); 82 reg &= ~DE_STRETCH_FORMAT_PIXEL_FORMAT_MASK; 83 reg |= ((fmt << DE_STRETCH_FORMAT_PIXEL_FORMAT_SHIFT) & 84 DE_STRETCH_FORMAT_PIXEL_FORMAT_MASK); 85 write_dpr(accel, DE_STRETCH_FORMAT, reg); 86 } 87 88 int sm750_hw_fillrect(struct lynx_accel *accel, 89 u32 base, u32 pitch, u32 Bpp, 90 u32 x, u32 y, u32 width, u32 height, 91 u32 color, u32 rop) 92 { 93 u32 deCtrl; 94 95 if (accel->de_wait() != 0) { 96 /* 97 * int time wait and always busy,seems hardware 98 * got something error 99 */ 100 pr_debug("De engine always busy\n"); 101 return -1; 102 } 103 104 write_dpr(accel, DE_WINDOW_DESTINATION_BASE, base); /* dpr40 */ 105 write_dpr(accel, DE_PITCH, 106 ((pitch / Bpp << DE_PITCH_DESTINATION_SHIFT) & 107 DE_PITCH_DESTINATION_MASK) | 108 (pitch / Bpp & DE_PITCH_SOURCE_MASK)); /* dpr10 */ 109 110 write_dpr(accel, DE_WINDOW_WIDTH, 111 ((pitch / Bpp << DE_WINDOW_WIDTH_DST_SHIFT) & 112 DE_WINDOW_WIDTH_DST_MASK) | 113 (pitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr44 */ 114 115 write_dpr(accel, DE_FOREGROUND, color); /* DPR14 */ 116 117 write_dpr(accel, DE_DESTINATION, 118 ((x << DE_DESTINATION_X_SHIFT) & DE_DESTINATION_X_MASK) | 119 (y & DE_DESTINATION_Y_MASK)); /* dpr4 */ 120 121 write_dpr(accel, DE_DIMENSION, 122 ((width << DE_DIMENSION_X_SHIFT) & DE_DIMENSION_X_MASK) | 123 (height & DE_DIMENSION_Y_ET_MASK)); /* dpr8 */ 124 125 deCtrl = DE_CONTROL_STATUS | DE_CONTROL_LAST_PIXEL | 126 DE_CONTROL_COMMAND_RECTANGLE_FILL | DE_CONTROL_ROP_SELECT | 127 (rop & DE_CONTROL_ROP_MASK); /* dpr0xc */ 128 129 write_dpr(accel, DE_CONTROL, deCtrl); 130 return 0; 131 } 132 133 /** 134 * sm750_hw_copyarea 135 * @accel: Acceleration device data 136 * @sBase: Address of source: offset in frame buffer 137 * @sPitch: Pitch value of source surface in BYTE 138 * @sx: Starting x coordinate of source surface 139 * @sy: Starting y coordinate of source surface 140 * @dBase: Address of destination: offset in frame buffer 141 * @dPitch: Pitch value of destination surface in BYTE 142 * @Bpp: Color depth of destination surface 143 * @dx: Starting x coordinate of destination surface 144 * @dy: Starting y coordinate of destination surface 145 * @width: width of rectangle in pixel value 146 * @height: height of rectangle in pixel value 147 * @rop2: ROP value 148 */ 149 int sm750_hw_copyarea(struct lynx_accel *accel, 150 unsigned int sBase, unsigned int sPitch, 151 unsigned int sx, unsigned int sy, 152 unsigned int dBase, unsigned int dPitch, 153 unsigned int Bpp, unsigned int dx, unsigned int dy, 154 unsigned int width, unsigned int height, 155 unsigned int rop2) 156 { 157 unsigned int nDirection, de_ctrl; 158 159 nDirection = LEFT_TO_RIGHT; 160 /* Direction of ROP2 operation: 1 = Left to Right, (-1) = Right to Left */ 161 de_ctrl = 0; 162 163 /* If source and destination are the same surface, need to check for overlay cases */ 164 if (sBase == dBase && sPitch == dPitch) { 165 /* Determine direction of operation */ 166 if (sy < dy) { 167 /* +----------+ 168 * |S | 169 * | +----------+ 170 * | | | | 171 * | | | | 172 * +---|------+ | 173 * | D| 174 * +----------+ 175 */ 176 177 nDirection = BOTTOM_TO_TOP; 178 } else if (sy > dy) { 179 /* +----------+ 180 * |D | 181 * | +----------+ 182 * | | | | 183 * | | | | 184 * +---|------+ | 185 * | S| 186 * +----------+ 187 */ 188 189 nDirection = TOP_TO_BOTTOM; 190 } else { 191 /* sy == dy */ 192 193 if (sx <= dx) { 194 /* +------+---+------+ 195 * |S | | D| 196 * | | | | 197 * | | | | 198 * | | | | 199 * +------+---+------+ 200 */ 201 202 nDirection = RIGHT_TO_LEFT; 203 } else { 204 /* sx > dx */ 205 206 /* +------+---+------+ 207 * |D | | S| 208 * | | | | 209 * | | | | 210 * | | | | 211 * +------+---+------+ 212 */ 213 214 nDirection = LEFT_TO_RIGHT; 215 } 216 } 217 } 218 219 if ((nDirection == BOTTOM_TO_TOP) || (nDirection == RIGHT_TO_LEFT)) { 220 sx += width - 1; 221 sy += height - 1; 222 dx += width - 1; 223 dy += height - 1; 224 } 225 226 /* 227 * Note: 228 * DE_FOREGROUND and DE_BACKGROUND are don't care. 229 * DE_COLOR_COMPARE and DE_COLOR_COMPARE_MAKS 230 * are set by set deSetTransparency(). 231 */ 232 233 /* 234 * 2D Source Base. 235 * It is an address offset (128 bit aligned) 236 * from the beginning of frame buffer. 237 */ 238 write_dpr(accel, DE_WINDOW_SOURCE_BASE, sBase); /* dpr40 */ 239 240 /* 241 * 2D Destination Base. 242 * It is an address offset (128 bit aligned) 243 * from the beginning of frame buffer. 244 */ 245 write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dBase); /* dpr44 */ 246 247 /* 248 * Program pitch (distance between the 1st points of two adjacent lines). 249 * Note that input pitch is BYTE value, but the 2D Pitch register uses 250 * pixel values. Need Byte to pixel conversion. 251 */ 252 write_dpr(accel, DE_PITCH, 253 ((dPitch / Bpp << DE_PITCH_DESTINATION_SHIFT) & 254 DE_PITCH_DESTINATION_MASK) | 255 (sPitch / Bpp & DE_PITCH_SOURCE_MASK)); /* dpr10 */ 256 257 /* 258 * Screen Window width in Pixels. 259 * 2D engine uses this value to calculate the linear address in frame buffer 260 * for a given point. 261 */ 262 write_dpr(accel, DE_WINDOW_WIDTH, 263 ((dPitch / Bpp << DE_WINDOW_WIDTH_DST_SHIFT) & 264 DE_WINDOW_WIDTH_DST_MASK) | 265 (sPitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr3c */ 266 267 if (accel->de_wait() != 0) 268 return -1; 269 270 write_dpr(accel, DE_SOURCE, 271 ((sx << DE_SOURCE_X_K1_SHIFT) & DE_SOURCE_X_K1_MASK) | 272 (sy & DE_SOURCE_Y_K2_MASK)); /* dpr0 */ 273 write_dpr(accel, DE_DESTINATION, 274 ((dx << DE_DESTINATION_X_SHIFT) & DE_DESTINATION_X_MASK) | 275 (dy & DE_DESTINATION_Y_MASK)); /* dpr04 */ 276 write_dpr(accel, DE_DIMENSION, 277 ((width << DE_DIMENSION_X_SHIFT) & DE_DIMENSION_X_MASK) | 278 (height & DE_DIMENSION_Y_ET_MASK)); /* dpr08 */ 279 280 de_ctrl = (rop2 & DE_CONTROL_ROP_MASK) | DE_CONTROL_ROP_SELECT | 281 ((nDirection == RIGHT_TO_LEFT) ? DE_CONTROL_DIRECTION : 0) | 282 DE_CONTROL_COMMAND_BITBLT | DE_CONTROL_STATUS; 283 write_dpr(accel, DE_CONTROL, de_ctrl); /* dpr0c */ 284 285 return 0; 286 } 287 288 static unsigned int deGetTransparency(struct lynx_accel *accel) 289 { 290 unsigned int de_ctrl; 291 292 de_ctrl = read_dpr(accel, DE_CONTROL); 293 294 de_ctrl &= (DE_CONTROL_TRANSPARENCY_MATCH | 295 DE_CONTROL_TRANSPARENCY_SELECT | DE_CONTROL_TRANSPARENCY); 296 297 return de_ctrl; 298 } 299 300 /** 301 * sm750_hw_imageblit 302 * @accel: Acceleration device data 303 * @pSrcbuf: pointer to start of source buffer in system memory 304 * @srcDelta: Pitch value (in bytes) of the source buffer, +ive means top down 305 * and -ive mean button up 306 * @startBit: Mono data can start at any bit in a byte, this value should be 307 * 0 to 7 308 * @dBase: Address of destination: offset in frame buffer 309 * @dPitch: Pitch value of destination surface in BYTE 310 * @bytePerPixel: Color depth of destination surface 311 * @dx: Starting x coordinate of destination surface 312 * @dy: Starting y coordinate of destination surface 313 * @width: width of rectangle in pixel value 314 * @height: height of rectangle in pixel value 315 * @fColor: Foreground color (corresponding to a 1 in the monochrome data 316 * @bColor: Background color (corresponding to a 0 in the monochrome data 317 * @rop2: ROP value 318 */ 319 int sm750_hw_imageblit(struct lynx_accel *accel, const char *pSrcbuf, 320 u32 srcDelta, u32 startBit, u32 dBase, u32 dPitch, 321 u32 bytePerPixel, u32 dx, u32 dy, u32 width, 322 u32 height, u32 fColor, u32 bColor, u32 rop2) 323 { 324 unsigned int ulBytesPerScan; 325 unsigned int ul4BytesPerScan; 326 unsigned int ulBytesRemain; 327 unsigned int de_ctrl = 0; 328 unsigned char ajRemain[4]; 329 int i, j; 330 331 startBit &= 7; /* Just make sure the start bit is within legal range */ 332 ulBytesPerScan = (width + startBit + 7) / 8; 333 ul4BytesPerScan = ulBytesPerScan & ~3; 334 ulBytesRemain = ulBytesPerScan & 3; 335 336 if (accel->de_wait() != 0) 337 return -1; 338 339 /* 340 * 2D Source Base. 341 * Use 0 for HOST Blt. 342 */ 343 write_dpr(accel, DE_WINDOW_SOURCE_BASE, 0); 344 345 /* 2D Destination Base. 346 * It is an address offset (128 bit aligned) 347 * from the beginning of frame buffer. 348 */ 349 write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dBase); 350 351 /* 352 * Program pitch (distance between the 1st points of two adjacent 353 * lines). Note that input pitch is BYTE value, but the 2D Pitch 354 * register uses pixel values. Need Byte to pixel conversion. 355 */ 356 write_dpr(accel, DE_PITCH, 357 ((dPitch / bytePerPixel << DE_PITCH_DESTINATION_SHIFT) & 358 DE_PITCH_DESTINATION_MASK) | 359 (dPitch / bytePerPixel & DE_PITCH_SOURCE_MASK)); /* dpr10 */ 360 361 /* 362 * Screen Window width in Pixels. 363 * 2D engine uses this value to calculate the linear address 364 * in frame buffer for a given point. 365 */ 366 write_dpr(accel, DE_WINDOW_WIDTH, 367 ((dPitch / bytePerPixel << DE_WINDOW_WIDTH_DST_SHIFT) & 368 DE_WINDOW_WIDTH_DST_MASK) | 369 (dPitch / bytePerPixel & DE_WINDOW_WIDTH_SRC_MASK)); 370 371 /* 372 * Note: For 2D Source in Host Write, only X_K1_MONO field is needed, 373 * and Y_K2 field is not used. 374 * For mono bitmap, use startBit for X_K1. 375 */ 376 write_dpr(accel, DE_SOURCE, 377 (startBit << DE_SOURCE_X_K1_SHIFT) & 378 DE_SOURCE_X_K1_MONO_MASK); /* dpr00 */ 379 380 write_dpr(accel, DE_DESTINATION, 381 ((dx << DE_DESTINATION_X_SHIFT) & DE_DESTINATION_X_MASK) | 382 (dy & DE_DESTINATION_Y_MASK)); /* dpr04 */ 383 384 write_dpr(accel, DE_DIMENSION, 385 ((width << DE_DIMENSION_X_SHIFT) & DE_DIMENSION_X_MASK) | 386 (height & DE_DIMENSION_Y_ET_MASK)); /* dpr08 */ 387 388 write_dpr(accel, DE_FOREGROUND, fColor); 389 write_dpr(accel, DE_BACKGROUND, bColor); 390 391 de_ctrl = (rop2 & DE_CONTROL_ROP_MASK) | 392 DE_CONTROL_ROP_SELECT | DE_CONTROL_COMMAND_HOST_WRITE | 393 DE_CONTROL_HOST | DE_CONTROL_STATUS; 394 395 write_dpr(accel, DE_CONTROL, de_ctrl | deGetTransparency(accel)); 396 397 /* Write MONO data (line by line) to 2D Engine data port */ 398 for (i = 0; i < height; i++) { 399 /* For each line, send the data in chunks of 4 bytes */ 400 for (j = 0; j < (ul4BytesPerScan / 4); j++) 401 write_dpPort(accel, *(unsigned int *)(pSrcbuf + (j * 4))); 402 403 if (ulBytesRemain) { 404 memcpy(ajRemain, pSrcbuf + ul4BytesPerScan, 405 ulBytesRemain); 406 write_dpPort(accel, *(unsigned int *)ajRemain); 407 } 408 409 pSrcbuf += srcDelta; 410 } 411 412 return 0; 413 } 414 415