drivers/video/msm/mdp_ppp.c

   1 /* drivers/video/msm/mdp_ppp.c
   2  *
   3  * Copyright (C) 2007 QUALCOMM Incorporated
   4  * Copyright (C) 2007 Google Incorporated
   5  *
   6  * This software is licensed under the terms of the GNU General Public
   7  * License version 2, as published by the Free Software Foundation, and
   8  * may be copied, distributed, and modified under those terms.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15 #include <linux/fb.h>
  16 #include <linux/file.h>
  17 #include <linux/delay.h>
  18 #include <linux/msm_mdp.h>
  19 #include <mach/msm_fb.h>
  20
  21 #include "mdp_hw.h"
  22 #include "mdp_scale_tables.h"
  23
  24 #define DLOG(x...) do {} while (0)
  25
  26 #define MDP_DOWNSCALE_BLUR (MDP_DOWNSCALE_MAX + 1)
  27 static int downscale_y_table = MDP_DOWNSCALE_MAX;
  28 static int downscale_x_table = MDP_DOWNSCALE_MAX;
  29
  30 struct mdp_regs {
  31         uint32_t src0;
  32         uint32_t src1;
  33         uint32_t dst0;
  34         uint32_t dst1;
  35         uint32_t src_cfg;
  36         uint32_t dst_cfg;
  37         uint32_t src_pack;
  38         uint32_t dst_pack;
  39         uint32_t src_rect;
  40         uint32_t dst_rect;
  41         uint32_t src_ystride;
  42         uint32_t dst_ystride;
  43         uint32_t op;
  44         uint32_t src_bpp;
  45         uint32_t dst_bpp;
  46         uint32_t edge;
  47         uint32_t phasex_init;
  48         uint32_t phasey_init;
  49         uint32_t phasex_step;
  50         uint32_t phasey_step;
  51 };
  52
  53 static uint32_t pack_pattern[] = {
  54         PPP_ARRAY0(PACK_PATTERN)
  55 };
  56
  57 static uint32_t src_img_cfg[] = {
  58         PPP_ARRAY1(CFG, SRC)
  59 };
  60
  61 static uint32_t dst_img_cfg[] = {
  62         PPP_ARRAY1(CFG, DST)
  63 };
  64
  65 static uint32_t bytes_per_pixel[] = {
  66         [MDP_RGB_565] = 2,
  67         [MDP_RGB_888] = 3,
  68         [MDP_XRGB_8888] = 4,
  69         [MDP_ARGB_8888] = 4,
  70         [MDP_RGBA_8888] = 4,
  71         [MDP_BGRA_8888] = 4,
  72         [MDP_RGBX_8888] = 4,
  73         [MDP_Y_CBCR_H2V1] = 1,
  74         [MDP_Y_CBCR_H2V2] = 1,
  75         [MDP_Y_CRCB_H2V1] = 1,
  76         [MDP_Y_CRCB_H2V2] = 1,
  77         [MDP_YCRYCB_H2V1] = 2
  78 };
  79
  80 static uint32_t dst_op_chroma[] = {
  81         PPP_ARRAY1(CHROMA_SAMP, DST)
  82 };
  83
  84 static uint32_t src_op_chroma[] = {
  85         PPP_ARRAY1(CHROMA_SAMP, SRC)
  86 };
  87
  88 static uint32_t bg_op_chroma[] = {
  89         PPP_ARRAY1(CHROMA_SAMP, BG)
  90 };
  91
  92 static void rotate_dst_addr_x(struct mdp_blit_req *req, struct mdp_regs *regs)
  93 {
  94         regs->dst0 += (req->dst_rect.w -
  95                        min((uint32_t)16, req->dst_rect.w)) * regs->dst_bpp;
  96         regs->dst1 += (req->dst_rect.w -
  97                        min((uint32_t)16, req->dst_rect.w)) * regs->dst_bpp;
  98 }
  99
 100 static void rotate_dst_addr_y(struct mdp_blit_req *req, struct mdp_regs *regs)
 101 {
 102         regs->dst0 += (req->dst_rect.h -
 103                        min((uint32_t)16, req->dst_rect.h)) *
 104                        regs->dst_ystride;
 105         regs->dst1 += (req->dst_rect.h -
 106                        min((uint32_t)16, req->dst_rect.h)) *
 107                        regs->dst_ystride;
 108 }
 109
 110 static void blit_rotate(struct mdp_blit_req *req,
 111                         struct mdp_regs *regs)
 112 {
 113         if (req->flags == MDP_ROT_NOP)
 114                 return;
 115
 116         regs->op |= PPP_OP_ROT_ON;
 117         if ((req->flags & MDP_ROT_90 || req->flags & MDP_FLIP_LR) &&
 118             !(req->flags & MDP_ROT_90 && req->flags & MDP_FLIP_LR))
 119                 rotate_dst_addr_x(req, regs);
 120         if (req->flags & MDP_ROT_90)
 121                 regs->op |= PPP_OP_ROT_90;
 122         if (req->flags & MDP_FLIP_UD) {
 123                 regs->op |= PPP_OP_FLIP_UD;
 124                 rotate_dst_addr_y(req, regs);
 125         }
 126         if (req->flags & MDP_FLIP_LR)
 127                 regs->op |= PPP_OP_FLIP_LR;
 128 }
 129
 130 static void blit_convert(struct mdp_blit_req *req, struct mdp_regs *regs)
 131 {
 132         if (req->src.format == req->dst.format)
 133                 return;
 134         if (IS_RGB(req->src.format) && IS_YCRCB(req->dst.format)) {
 135                 regs->op |= PPP_OP_CONVERT_RGB2YCBCR | PPP_OP_CONVERT_ON;
 136         } else if (IS_YCRCB(req->src.format) && IS_RGB(req->dst.format)) {
 137                 regs->op |= PPP_OP_CONVERT_YCBCR2RGB | PPP_OP_CONVERT_ON;
 138                 if (req->dst.format == MDP_RGB_565)
 139                         regs->op |= PPP_OP_CONVERT_MATRIX_SECONDARY;
 140         }
 141 }
 142
 143 #define GET_BIT_RANGE(value, high, low) \
 144         (((1 << (high - low + 1)) - 1) & (value >> low))
 145 static uint32_t transp_convert(struct mdp_blit_req *req)
 146 {
 147         uint32_t transp = 0;
 148         if (req->src.format == MDP_RGB_565) {
 149                 /* pad each value to 8 bits by copying the high bits into the
 150                  * low end, convert RGB to RBG by switching low 2 components */
 151                 transp |= ((GET_BIT_RANGE(req->transp_mask, 15, 11) << 3) |
 152                            (GET_BIT_RANGE(req->transp_mask, 15, 13))) << 16;
 153
 154                 transp |= ((GET_BIT_RANGE(req->transp_mask, 4, 0) << 3) |
 155                            (GET_BIT_RANGE(req->transp_mask, 4, 2))) << 8;
 156
 157                 transp |= (GET_BIT_RANGE(req->transp_mask, 10, 5) << 2) |
 158                           (GET_BIT_RANGE(req->transp_mask, 10, 9));
 159         } else {
 160                 /* convert RGB to RBG */
 161                 transp |= (GET_BIT_RANGE(req->transp_mask, 15, 8)) |
 162                           (GET_BIT_RANGE(req->transp_mask, 23, 16) << 16) |
 163                           (GET_BIT_RANGE(req->transp_mask, 7, 0) << 8);
 164         }
 165         return transp;
 166 }
 167 #undef GET_BIT_RANGE
 168
 169 static void blit_blend(struct mdp_blit_req *req, struct mdp_regs *regs)
 170 {
 171         /* TRANSP BLEND */
 172         if (req->transp_mask != MDP_TRANSP_NOP) {
 173                 req->transp_mask = transp_convert(req);
 174                 if (req->alpha != MDP_ALPHA_NOP) {
 175                         /* use blended transparancy mode
 176                          * pixel = (src == transp) ? dst : blend
 177                          * blend is combo of blend_eq_sel and
 178                          * blend_alpha_sel */
 179                         regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
 180                                 PPP_OP_BLEND_ALPHA_BLEND_NORMAL |
 181                                 PPP_OP_BLEND_CONSTANT_ALPHA |
 182                                 PPP_BLEND_ALPHA_TRANSP;
 183                 } else {
 184                         /* simple transparancy mode
 185                          * pixel = (src == transp) ? dst : src */
 186                         regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
 187                                 PPP_OP_BLEND_SRCPIXEL_TRANSP;
 188                 }
 189         }
 190
 191         req->alpha &= 0xff;
 192         /* ALPHA BLEND */
 193         if (HAS_ALPHA(req->src.format)) {
 194                 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
 195                         PPP_OP_BLEND_SRCPIXEL_ALPHA;
 196         } else if (req->alpha < MDP_ALPHA_NOP) {
 197                 /* just blend by alpha */
 198                 regs->op |= PPP_OP_ROT_ON | PPP_OP_BLEND_ON |
 199                         PPP_OP_BLEND_ALPHA_BLEND_NORMAL |
 200                         PPP_OP_BLEND_CONSTANT_ALPHA;
 201         }
 202
 203         regs->op |= bg_op_chroma[req->dst.format];
 204 }
 205
 206 #define ONE_HALF        (1LL << 32)
 207 #define ONE             (1LL << 33)
 208 #define TWO             (2LL << 33)
 209 #define THREE           (3LL << 33)
 210 #define FRAC_MASK (ONE - 1)
 211 #define INT_MASK (~FRAC_MASK)
 212
 213 static int scale_params(uint32_t dim_in, uint32_t dim_out, uint32_t origin,
 214                         uint32_t *phase_init, uint32_t *phase_step)
 215 {
 216         /* to improve precicsion calculations are done in U31.33 and converted
 217          * to U3.29 at the end */
 218         int64_t k1, k2, k3, k4, tmp;
 219         uint64_t n, d, os, os_p, od, od_p, oreq;
 220         unsigned rpa = 0;
 221         int64_t ip64, delta;
 222
 223         if (dim_out % 3 == 0)
 224                 rpa = !(dim_in % (dim_out / 3));
 225
 226         n = ((uint64_t)dim_out) << 34;
 227         d = dim_in;
 228         if (!d)
 229                 return -1;
 230         do_div(n, d);
 231         k3 = (n + 1) >> 1;
 232         if ((k3 >> 4) < (1LL << 27) || (k3 >> 4) > (1LL << 31)) {
 233                 DLOG("crap bad scale\n");
 234                 return -1;
 235         }
 236         n = ((uint64_t)dim_in) << 34;
 237         d = (uint64_t)dim_out;
 238         if (!d)
 239                 return -1;
 240         do_div(n, d);
 241         k1 = (n + 1) >> 1;
 242         k2 = (k1 - ONE) >> 1;
 243
 244         *phase_init = (int)(k2 >> 4);
 245         k4 = (k3 - ONE) >> 1;
 246
 247         if (rpa) {
 248                 os = ((uint64_t)origin << 33) - ONE_HALF;
 249                 tmp = (dim_out * os) + ONE_HALF;
 250                 if (!dim_in)
 251                         return -1;
 252                 do_div(tmp, dim_in);
 253                 od = tmp - ONE_HALF;
 254         } else {
 255                 os = ((uint64_t)origin << 1) - 1;
 256                 od = (((k3 * os) >> 1) + k4);
 257         }
 258
 259         od_p = od & INT_MASK;
 260         if (od_p != od)
 261                 od_p += ONE;
 262
 263         if (rpa) {
 264                 tmp = (dim_in * od_p) + ONE_HALF;
 265                 if (!dim_in)
 266                         return -1;
 267                 do_div(tmp, dim_in);
 268                 os_p = tmp - ONE_HALF;
 269         } else {
 270                 os_p = ((k1 * (od_p >> 33)) + k2);
 271         }
 272
 273         oreq = (os_p & INT_MASK) - ONE;
 274
 275         ip64 = os_p - oreq;
 276         delta = ((int64_t)(origin) << 33) - oreq;
 277         ip64 -= delta;
 278         /* limit to valid range before the left shift */
 279         delta = (ip64 & (1LL << 63)) ? 4 : -4;
 280         delta <<= 33;
 281         while (abs((int)(ip64 >> 33)) > 4)
 282                 ip64 += delta;
 283         *phase_init = (int)(ip64 >> 4);
 284         *phase_step = (uint32_t)(k1 >> 4);
 285         return 0;
 286 }
 287
 288 static void load_scale_table(const struct mdp_info *mdp,
 289                              struct mdp_table_entry *table, int len)
 290 {
 291         int i;
 292         for (i = 0; i < len; i++)
 293                 mdp_writel(mdp, table[i].val, table[i].reg);
 294 }
 295
 296 enum {
 297 IMG_LEFT,
 298 IMG_RIGHT,
 299 IMG_TOP,
 300 IMG_BOTTOM,
 301 };
 302
 303 static void get_edge_info(uint32_t src, uint32_t src_coord, uint32_t dst,
 304                           uint32_t *interp1, uint32_t *interp2,
 305                           uint32_t *repeat1, uint32_t *repeat2) {
 306         if (src > 3 * dst) {
 307                 *interp1 = 0;
 308                 *interp2 = src - 1;
 309                 *repeat1 = 0;
 310                 *repeat2 = 0;
 311         } else if (src == 3 * dst) {
 312                 *interp1 = 0;
 313                 *interp2 = src;
 314                 *repeat1 = 0;
 315                 *repeat2 = 1;
 316         } else if (src > dst && src < 3 * dst) {
 317                 *interp1 = -1;
 318                 *interp2 = src;
 319                 *repeat1 = 1;
 320                 *repeat2 = 1;
 321         } else if (src == dst) {
 322                 *interp1 = -1;
 323                 *interp2 = src + 1;
 324                 *repeat1 = 1;
 325                 *repeat2 = 2;
 326         } else {
 327                 *interp1 = -2;
 328                 *interp2 = src + 1;
 329                 *repeat1 = 2;
 330                 *repeat2 = 2;
 331         }
 332         *interp1 += src_coord;
 333         *interp2 += src_coord;
 334 }
 335
 336 static int get_edge_cond(struct mdp_blit_req *req, struct mdp_regs *regs)
 337 {
 338         int32_t luma_interp[4];
 339         int32_t luma_repeat[4];
 340         int32_t chroma_interp[4];
 341         int32_t chroma_bound[4];
 342         int32_t chroma_repeat[4];
 343         uint32_t dst_w, dst_h;
 344
 345         memset(&luma_interp, 0, sizeof(int32_t) * 4);
 346         memset(&luma_repeat, 0, sizeof(int32_t) * 4);
 347         memset(&chroma_interp, 0, sizeof(int32_t) * 4);
 348         memset(&chroma_bound, 0, sizeof(int32_t) * 4);
 349         memset(&chroma_repeat, 0, sizeof(int32_t) * 4);
 350         regs->edge = 0;
 351
 352         if (req->flags & MDP_ROT_90) {
 353                 dst_w = req->dst_rect.h;
 354                 dst_h = req->dst_rect.w;
 355         } else {
 356                 dst_w = req->dst_rect.w;
 357                 dst_h = req->dst_rect.h;
 358         }
 359
 360         if (regs->op & (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON)) {
 361                 get_edge_info(req->src_rect.h, req->src_rect.y, dst_h,
 362                               &luma_interp[IMG_TOP], &luma_interp[IMG_BOTTOM],
 363                               &luma_repeat[IMG_TOP], &luma_repeat[IMG_BOTTOM]);
 364                 get_edge_info(req->src_rect.w, req->src_rect.x, dst_w,
 365                               &luma_interp[IMG_LEFT], &luma_interp[IMG_RIGHT],
 366                               &luma_repeat[IMG_LEFT], &luma_repeat[IMG_RIGHT]);
 367         } else {
 368                 luma_interp[IMG_LEFT] = req->src_rect.x;
 369                 luma_interp[IMG_RIGHT] = req->src_rect.x + req->src_rect.w - 1;
 370                 luma_interp[IMG_TOP] = req->src_rect.y;
 371                 luma_interp[IMG_BOTTOM] = req->src_rect.y + req->src_rect.h - 1;
 372                 luma_repeat[IMG_LEFT] = 0;
 373                 luma_repeat[IMG_TOP] = 0;
 374                 luma_repeat[IMG_RIGHT] = 0;
 375                 luma_repeat[IMG_BOTTOM] = 0;
 376         }
 377
 378         chroma_interp[IMG_LEFT] = luma_interp[IMG_LEFT];
 379         chroma_interp[IMG_RIGHT] = luma_interp[IMG_RIGHT];
 380         chroma_interp[IMG_TOP] = luma_interp[IMG_TOP];
 381         chroma_interp[IMG_BOTTOM] = luma_interp[IMG_BOTTOM];
 382
 383         chroma_bound[IMG_LEFT] = req->src_rect.x;
 384         chroma_bound[IMG_RIGHT] = req->src_rect.x + req->src_rect.w - 1;
 385         chroma_bound[IMG_TOP] = req->src_rect.y;
 386         chroma_bound[IMG_BOTTOM] = req->src_rect.y + req->src_rect.h - 1;
 387
 388         if (IS_YCRCB(req->src.format)) {
 389                 chroma_interp[IMG_LEFT] = chroma_interp[IMG_LEFT] >> 1;
 390                 chroma_interp[IMG_RIGHT] = (chroma_interp[IMG_RIGHT] + 1) >> 1;
 391
 392                 chroma_bound[IMG_LEFT] = chroma_bound[IMG_LEFT] >> 1;
 393                 chroma_bound[IMG_RIGHT] = chroma_bound[IMG_RIGHT] >> 1;
 394         }
 395
 396         if (req->src.format == MDP_Y_CBCR_H2V2 ||
 397             req->src.format == MDP_Y_CRCB_H2V2) {
 398                 chroma_interp[IMG_TOP] = (chroma_interp[IMG_TOP] - 1) >> 1;
 399                 chroma_interp[IMG_BOTTOM] = (chroma_interp[IMG_BOTTOM] + 1)
 400                                             >> 1;
 401                 chroma_bound[IMG_TOP] = (chroma_bound[IMG_TOP] + 1) >> 1;
 402                 chroma_bound[IMG_BOTTOM] = chroma_bound[IMG_BOTTOM] >> 1;
 403         }
 404
 405         chroma_repeat[IMG_LEFT] = chroma_bound[IMG_LEFT] -
 406                                   chroma_interp[IMG_LEFT];
 407         chroma_repeat[IMG_RIGHT] = chroma_interp[IMG_RIGHT] -
 408                                   chroma_bound[IMG_RIGHT];
 409         chroma_repeat[IMG_TOP] = chroma_bound[IMG_TOP] -
 410                                   chroma_interp[IMG_TOP];
 411         chroma_repeat[IMG_BOTTOM] = chroma_interp[IMG_BOTTOM] -
 412                                   chroma_bound[IMG_BOTTOM];
 413
 414         if (chroma_repeat[IMG_LEFT] < 0 || chroma_repeat[IMG_LEFT] > 3 ||
 415             chroma_repeat[IMG_RIGHT] < 0 || chroma_repeat[IMG_RIGHT] > 3 ||
 416             chroma_repeat[IMG_TOP] < 0 || chroma_repeat[IMG_TOP] > 3 ||
 417             chroma_repeat[IMG_BOTTOM] < 0 || chroma_repeat[IMG_BOTTOM] > 3 ||
 418             luma_repeat[IMG_LEFT] < 0 || luma_repeat[IMG_LEFT] > 3 ||
 419             luma_repeat[IMG_RIGHT] < 0 || luma_repeat[IMG_RIGHT] > 3 ||
 420             luma_repeat[IMG_TOP] < 0 || luma_repeat[IMG_TOP] > 3 ||
 421             luma_repeat[IMG_BOTTOM] < 0 || luma_repeat[IMG_BOTTOM] > 3)
 422                 return -1;
 423
 424         regs->edge |= (chroma_repeat[IMG_LEFT] & 3) << MDP_LEFT_CHROMA;
 425         regs->edge |= (chroma_repeat[IMG_RIGHT] & 3) << MDP_RIGHT_CHROMA;
 426         regs->edge |= (chroma_repeat[IMG_TOP] & 3) << MDP_TOP_CHROMA;
 427         regs->edge |= (chroma_repeat[IMG_BOTTOM] & 3) << MDP_BOTTOM_CHROMA;
 428         regs->edge |= (luma_repeat[IMG_LEFT] & 3) << MDP_LEFT_LUMA;
 429         regs->edge |= (luma_repeat[IMG_RIGHT] & 3) << MDP_RIGHT_LUMA;
 430         regs->edge |= (luma_repeat[IMG_TOP] & 3) << MDP_TOP_LUMA;
 431         regs->edge |= (luma_repeat[IMG_BOTTOM] & 3) << MDP_BOTTOM_LUMA;
 432         return 0;
 433 }
 434
 435 static int blit_scale(const struct mdp_info *mdp, struct mdp_blit_req *req,
 436                       struct mdp_regs *regs)
 437 {
 438         uint32_t phase_init_x, phase_init_y, phase_step_x, phase_step_y;
 439         uint32_t scale_factor_x, scale_factor_y;
 440         uint32_t downscale;
 441         uint32_t dst_w, dst_h;
 442
 443         if (req->flags & MDP_ROT_90) {
 444                 dst_w = req->dst_rect.h;
 445                 dst_h = req->dst_rect.w;
 446         } else {
 447                 dst_w = req->dst_rect.w;
 448                 dst_h = req->dst_rect.h;
 449         }
 450         if ((req->src_rect.w == dst_w)  && (req->src_rect.h == dst_h) &&
 451             !(req->flags & MDP_BLUR)) {
 452                 regs->phasex_init = 0;
 453                 regs->phasey_init = 0;
 454                 regs->phasex_step = 0;
 455                 regs->phasey_step = 0;
 456                 return 0;
 457         }
 458
 459         if (scale_params(req->src_rect.w, dst_w, 1, &phase_init_x,
 460                          &phase_step_x) ||
 461             scale_params(req->src_rect.h, dst_h, 1, &phase_init_y,
 462                          &phase_step_y))
 463                 return -1;
 464
 465         scale_factor_x = (dst_w * 10) / req->src_rect.w;
 466         scale_factor_y = (dst_h * 10) / req->src_rect.h;
 467
 468         if (scale_factor_x > 8)
 469                 downscale = MDP_DOWNSCALE_PT8TO1;
 470         else if (scale_factor_x > 6)
 471                 downscale = MDP_DOWNSCALE_PT6TOPT8;
 472         else if (scale_factor_x > 4)
 473                 downscale = MDP_DOWNSCALE_PT4TOPT6;
 474         else
 475                 downscale = MDP_DOWNSCALE_PT2TOPT4;
 476         if (downscale != downscale_x_table) {
 477                 load_scale_table(mdp, mdp_downscale_x_table[downscale], 64);
 478                 downscale_x_table = downscale;
 479         }
 480
 481         if (scale_factor_y > 8)
 482                 downscale = MDP_DOWNSCALE_PT8TO1;
 483         else if (scale_factor_y > 6)
 484                 downscale = MDP_DOWNSCALE_PT6TOPT8;
 485         else if (scale_factor_y > 4)
 486                 downscale = MDP_DOWNSCALE_PT4TOPT6;
 487         else
 488                 downscale = MDP_DOWNSCALE_PT2TOPT4;
 489         if (downscale != downscale_y_table) {
 490                 load_scale_table(mdp, mdp_downscale_y_table[downscale], 64);
 491                 downscale_y_table = downscale;
 492         }
 493
 494         regs->phasex_init = phase_init_x;
 495         regs->phasey_init = phase_init_y;
 496         regs->phasex_step = phase_step_x;
 497         regs->phasey_step = phase_step_y;
 498         regs->op |= (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON);
 499         return 0;
 500
 501 }
 502
 503 static void blit_blur(const struct mdp_info *mdp, struct mdp_blit_req *req,
 504                       struct mdp_regs *regs)
 505 {
 506         if (!(req->flags & MDP_BLUR))
 507                 return;
 508
 509         if (!(downscale_x_table == MDP_DOWNSCALE_BLUR &&
 510               downscale_y_table == MDP_DOWNSCALE_BLUR)) {
 511                 load_scale_table(mdp, mdp_gaussian_blur_table, 128);
 512                 downscale_x_table = MDP_DOWNSCALE_BLUR;
 513                 downscale_y_table = MDP_DOWNSCALE_BLUR;
 514         }
 515
 516         regs->op |= (PPP_OP_SCALE_Y_ON | PPP_OP_SCALE_X_ON);
 517 }
 518
 519
 520 #define IMG_LEN(rect_h, w, rect_w, bpp) (((rect_h) * w) * bpp)
 521
 522 #define Y_TO_CRCB_RATIO(format) \
 523         ((format == MDP_Y_CBCR_H2V2 || format == MDP_Y_CRCB_H2V2) ?  2 :\
 524          (format == MDP_Y_CBCR_H2V1 || format == MDP_Y_CRCB_H2V1) ?  1 : 1)
 525
 526 static void get_len(struct mdp_img *img, struct mdp_rect *rect, uint32_t bpp,
 527                     uint32_t *len0, uint32_t *len1)
 528 {
 529         *len0 = IMG_LEN(rect->h, img->width, rect->w, bpp);
 530         if (IS_PSEUDOPLNR(img->format))
 531                 *len1 = *len0/Y_TO_CRCB_RATIO(img->format);
 532         else
 533                 *len1 = 0;
 534 }
 535
 536 static int valid_src_dst(unsigned long src_start, unsigned long src_len,
 537                          unsigned long dst_start, unsigned long dst_len,
 538                          struct mdp_blit_req *req, struct mdp_regs *regs)
 539 {
 540         unsigned long src_min_ok = src_start;
 541         unsigned long src_max_ok = src_start + src_len;
 542         unsigned long dst_min_ok = dst_start;
 543         unsigned long dst_max_ok = dst_start + dst_len;
 544         uint32_t src0_len, src1_len, dst0_len, dst1_len;
 545         get_len(&req->src, &req->src_rect, regs->src_bpp, &src0_len,
 546                  &src1_len);
 547         get_len(&req->dst, &req->dst_rect, regs->dst_bpp, &dst0_len,
 548                  &dst1_len);
 549
 550         if (regs->src0 < src_min_ok || regs->src0 > src_max_ok ||
 551             regs->src0 + src0_len > src_max_ok) {
 552                 DLOG("invalid_src %x %x %lx %lx\n", regs->src0,
 553                       src0_len, src_min_ok, src_max_ok);
 554                 return 0;
 555         }
 556         if (regs->src_cfg & PPP_SRC_PLANE_PSEUDOPLNR) {
 557                 if (regs->src1 < src_min_ok || regs->src1 > src_max_ok ||
 558                     regs->src1 + src1_len > src_max_ok) {
 559                         DLOG("invalid_src1");
 560                         return 0;
 561                 }
 562         }
 563         if (regs->dst0 < dst_min_ok || regs->dst0 > dst_max_ok ||
 564             regs->dst0 + dst0_len > dst_max_ok) {
 565                 DLOG("invalid_dst");
 566                 return 0;
 567         }
 568         if (regs->dst_cfg & PPP_SRC_PLANE_PSEUDOPLNR) {
 569                 if (regs->dst1 < dst_min_ok || regs->dst1 > dst_max_ok ||
 570                     regs->dst1 + dst1_len > dst_max_ok) {
 571                         DLOG("invalid_dst1");
 572                         return 0;
 573                 }
 574         }
 575         return 1;
 576 }
 577
 578
 579 static void flush_imgs(struct mdp_blit_req *req, struct mdp_regs *regs,
 580                        struct file *src_file, struct file *dst_file)
 581 {
 582 }
 583
 584 static void get_chroma_addr(struct mdp_img *img, struct mdp_rect *rect,
 585                             uint32_t base, uint32_t bpp, uint32_t cfg,
 586                             uint32_t *addr, uint32_t *ystride)
 587 {
 588         uint32_t compress_v = Y_TO_CRCB_RATIO(img->format);
 589         uint32_t compress_h = 2;
 590         uint32_t  offset;
 591
 592         if (IS_PSEUDOPLNR(img->format)) {
 593                 offset = (rect->x / compress_h) * compress_h;
 594                 offset += rect->y == 0 ? 0 :
 595                           ((rect->y + 1) / compress_v) * img->width;
 596                 *addr = base + (img->width * img->height * bpp);
 597                 *addr += offset * bpp;
 598                 *ystride |= *ystride << 16;
 599         } else {
 600                 *addr = 0;
 601         }
 602 }
 603
 604 static int send_blit(const struct mdp_info *mdp, struct mdp_blit_req *req,
 605                      struct mdp_regs *regs, struct file *src_file,
 606                      struct file *dst_file)
 607 {
 608         mdp_writel(mdp, 1, 0x060);
 609         mdp_writel(mdp, regs->src_rect, PPP_ADDR_SRC_ROI);
 610         mdp_writel(mdp, regs->src0, PPP_ADDR_SRC0);
 611         mdp_writel(mdp, regs->src1, PPP_ADDR_SRC1);
 612         mdp_writel(mdp, regs->src_ystride, PPP_ADDR_SRC_YSTRIDE);
 613         mdp_writel(mdp, regs->src_cfg, PPP_ADDR_SRC_CFG);
 614         mdp_writel(mdp, regs->src_pack, PPP_ADDR_SRC_PACK_PATTERN);
 615
 616         mdp_writel(mdp, regs->op, PPP_ADDR_OPERATION);
 617         mdp_writel(mdp, regs->phasex_init, PPP_ADDR_PHASEX_INIT);
 618         mdp_writel(mdp, regs->phasey_init, PPP_ADDR_PHASEY_INIT);
 619         mdp_writel(mdp, regs->phasex_step, PPP_ADDR_PHASEX_STEP);
 620         mdp_writel(mdp, regs->phasey_step, PPP_ADDR_PHASEY_STEP);
 621
 622         mdp_writel(mdp, (req->alpha << 24) | (req->transp_mask & 0xffffff),
 623                PPP_ADDR_ALPHA_TRANSP);
 624
 625         mdp_writel(mdp, regs->dst_cfg, PPP_ADDR_DST_CFG);
 626         mdp_writel(mdp, regs->dst_pack, PPP_ADDR_DST_PACK_PATTERN);
 627         mdp_writel(mdp, regs->dst_rect, PPP_ADDR_DST_ROI);
 628         mdp_writel(mdp, regs->dst0, PPP_ADDR_DST0);
 629         mdp_writel(mdp, regs->dst1, PPP_ADDR_DST1);
 630         mdp_writel(mdp, regs->dst_ystride, PPP_ADDR_DST_YSTRIDE);
 631
 632         mdp_writel(mdp, regs->edge, PPP_ADDR_EDGE);
 633         if (regs->op & PPP_OP_BLEND_ON) {
 634                 mdp_writel(mdp, regs->dst0, PPP_ADDR_BG0);
 635                 mdp_writel(mdp, regs->dst1, PPP_ADDR_BG1);
 636                 mdp_writel(mdp, regs->dst_ystride, PPP_ADDR_BG_YSTRIDE);
 637                 mdp_writel(mdp, src_img_cfg[req->dst.format], PPP_ADDR_BG_CFG);
 638                 mdp_writel(mdp, pack_pattern[req->dst.format],
 639                            PPP_ADDR_BG_PACK_PATTERN);
 640         }
 641         flush_imgs(req, regs, src_file, dst_file);
 642         mdp_writel(mdp, 0x1000, MDP_DISPLAY0_START);
 643         return 0;
 644 }
 645
 646 int mdp_ppp_blit(const struct mdp_info *mdp, struct mdp_blit_req *req,
 647                  struct file *src_file, unsigned long src_start, unsigned long src_len,
 648                  struct file *dst_file, unsigned long dst_start, unsigned long dst_len)
 649 {
 650         struct mdp_regs regs = {0};
 651
 652         if (unlikely(req->src.format >= MDP_IMGTYPE_LIMIT ||
 653                      req->dst.format >= MDP_IMGTYPE_LIMIT)) {
 654                 printk(KERN_ERR "mpd_ppp: img is of wrong format\n");
 655                 return -EINVAL;
 656         }
 657
 658         if (unlikely(req->src_rect.x > req->src.width ||
 659                      req->src_rect.y > req->src.height ||
 660                      req->dst_rect.x > req->dst.width ||
 661                      req->dst_rect.y > req->dst.height)) {
 662                 printk(KERN_ERR "mpd_ppp: img rect is outside of img!\n");
 663                 return -EINVAL;
 664         }
 665
 666         /* set the src image configuration */
 667         regs.src_cfg = src_img_cfg[req->src.format];
 668         regs.src_cfg |= (req->src_rect.x & 0x1) ? PPP_SRC_BPP_ROI_ODD_X : 0;
 669         regs.src_cfg |= (req->src_rect.y & 0x1) ? PPP_SRC_BPP_ROI_ODD_Y : 0;
 670         regs.src_rect = (req->src_rect.h << 16) | req->src_rect.w;
 671         regs.src_pack = pack_pattern[req->src.format];
 672
 673         /* set the dest image configuration */
 674         regs.dst_cfg = dst_img_cfg[req->dst.format] | PPP_DST_OUT_SEL_AXI;
 675         regs.dst_rect = (req->dst_rect.h << 16) | req->dst_rect.w;
 676         regs.dst_pack = pack_pattern[req->dst.format];
 677
 678         /* set src, bpp, start pixel and ystride */
 679         regs.src_bpp = bytes_per_pixel[req->src.format];
 680         regs.src0 = src_start + req->src.offset;
 681         regs.src_ystride = req->src.width * regs.src_bpp;
 682         get_chroma_addr(&req->src, &req->src_rect, regs.src0, regs.src_bpp,
 683                         regs.src_cfg, &regs.src1, &regs.src_ystride);
 684         regs.src0 += (req->src_rect.x + (req->src_rect.y * req->src.width)) *
 685                       regs.src_bpp;
 686
 687         /* set dst, bpp, start pixel and ystride */
 688         regs.dst_bpp = bytes_per_pixel[req->dst.format];
 689         regs.dst0 = dst_start + req->dst.offset;
 690         regs.dst_ystride = req->dst.width * regs.dst_bpp;
 691         get_chroma_addr(&req->dst, &req->dst_rect, regs.dst0, regs.dst_bpp,
 692                         regs.dst_cfg, &regs.dst1, &regs.dst_ystride);
 693         regs.dst0 += (req->dst_rect.x + (req->dst_rect.y * req->dst.width)) *
 694                       regs.dst_bpp;
 695
 696         if (!valid_src_dst(src_start, src_len, dst_start, dst_len, req,
 697                            &regs)) {
 698                 printk(KERN_ERR "mpd_ppp: final src or dst location is "
 699                         "invalid, are you trying to make an image too large "
 700                         "or to place it outside the screen?\n");
 701                 return -EINVAL;
 702         }
 703
 704         /* set up operation register */
 705         regs.op = 0;
 706         blit_rotate(req, &regs);
 707         blit_convert(req, &regs);
 708         if (req->flags & MDP_DITHER)
 709                 regs.op |= PPP_OP_DITHER_EN;
 710         blit_blend(req, &regs);
 711         if (blit_scale(mdp, req, &regs)) {
 712                 printk(KERN_ERR "mpd_ppp: error computing scale for img.\n");
 713                 return -EINVAL;
 714         }
 715         blit_blur(mdp, req, &regs);
 716         regs.op |= dst_op_chroma[req->dst.format] |
 717                    src_op_chroma[req->src.format];
 718
 719         /* if the image is YCRYCB, the x and w must be even */
 720         if (unlikely(req->src.format == MDP_YCRYCB_H2V1)) {
 721                 req->src_rect.x = req->src_rect.x & (~0x1);
 722                 req->src_rect.w = req->src_rect.w & (~0x1);
 723                 req->dst_rect.x = req->dst_rect.x & (~0x1);
 724                 req->dst_rect.w = req->dst_rect.w & (~0x1);
 725         }
 726         if (get_edge_cond(req, &regs))
 727                 return -EINVAL;
 728
 729         send_blit(mdp, req, &regs, src_file, dst_file);
 730         return 0;
 731 }