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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  * Copyright (c) 2010 - 2014, The Linux Foundation. All rights reserved.
      4  *
      5  * Not a Contribution, Apache license notifications and license are retained
      6  * for attribution purposes only.
      7  *
      8  * Licensed under the Apache License, Version 2.0 (the "License");
      9  * you may not use this file except in compliance with the License.
     10  * You may obtain a copy of the License at
     11  *
     12  *      http://www.apache.org/licenses/LICENSE-2.0
     13  *
     14  * Unless required by applicable law or agreed to in writing, software
     15  * distributed under the License is distributed on an "AS IS" BASIS,
     16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     17  * See the License for the specific language governing permissions and
     18  * limitations under the License.
     19  */
     20 
     21 #include <errno.h>
     22 #include <fcntl.h>
     23 #include <linux/msm_mdp.h>
     24 #include <linux/fb.h>
     25 #include <stdint.h>
     26 #include <string.h>
     27 #include <sys/ioctl.h>
     28 #include <sys/mman.h>
     29 #include <sys/types.h>
     30 #include <unistd.h>
     31 
     32 #include <log/log.h>
     33 
     34 #include <copybit.h>
     35 
     36 #include "gralloc_priv.h"
     37 #include "software_converter.h"
     38 #include <qdMetaData.h>
     39 
     40 #define DEBUG_MDP_ERRORS 1
     41 
     42 /******************************************************************************/
     43 
     44 #define MAX_SCALE_FACTOR    (4)
     45 #define MAX_DIMENSION       (4096)
     46 
     47 /******************************************************************************/
     48 struct blitReq{
     49     struct  mdp_buf_sync sync;
     50     uint32_t count;
     51     struct mdp_blit_req req[10];
     52 };
     53 
     54 /** State information for each device instance */
     55 struct copybit_context_t {
     56     struct copybit_device_t device;
     57     int     mFD;
     58     uint8_t mAlpha;
     59     int     mFlags;
     60     bool    mBlitToFB;
     61     int     acqFence[MDP_MAX_FENCE_FD];
     62     int     relFence;
     63     struct  mdp_buf_sync sync;
     64     struct  blitReq list;
     65     uint8_t dynamic_fps;
     66 };
     67 
     68 /**
     69  * Common hardware methods
     70  */
     71 
     72 static int open_copybit(const struct hw_module_t* module, const char* name,
     73                         struct hw_device_t** device);
     74 
     75 static struct hw_module_methods_t copybit_module_methods = {
     76 open:  open_copybit
     77 };
     78 
     79 /*
     80  * The COPYBIT Module
     81  */
     82 struct copybit_module_t HAL_MODULE_INFO_SYM = {
     83 common: {
     84 tag: HARDWARE_MODULE_TAG,
     85      version_major: 1,
     86      version_minor: 0,
     87      id: COPYBIT_HARDWARE_MODULE_ID,
     88      name: "QCT MSM7K COPYBIT Module",
     89      author: "Google, Inc.",
     90      methods: &copybit_module_methods
     91         }
     92 };
     93 
     94 /******************************************************************************/
     95 
     96 /** min of int a, b */
     97 static inline int min(int a, int b) {
     98     return (a<b) ? a : b;
     99 }
    100 
    101 /** max of int a, b */
    102 static inline int max(int a, int b) {
    103     return (a>b) ? a : b;
    104 }
    105 
    106 /** scale each parameter by mul/div. Assume div isn't 0 */
    107 static inline void MULDIV(uint32_t *a, uint32_t *b, int mul, int div) {
    108     if (mul != div) {
    109         *a = (mul * *a) / div;
    110         *b = (mul * *b) / div;
    111     }
    112 }
    113 
    114 /** Determine the intersection of lhs & rhs store in out */
    115 static void intersect(struct copybit_rect_t *out,
    116                       const struct copybit_rect_t *lhs,
    117                       const struct copybit_rect_t *rhs) {
    118     out->l = max(lhs->l, rhs->l);
    119     out->t = max(lhs->t, rhs->t);
    120     out->r = min(lhs->r, rhs->r);
    121     out->b = min(lhs->b, rhs->b);
    122 }
    123 
    124 static bool validateCopybitRect(struct copybit_rect_t *rect) {
    125     return ((rect->b > rect->t) && (rect->r > rect->l)) ;
    126 }
    127 
    128 /** convert COPYBIT_FORMAT to MDP format */
    129 static int get_format(int format) {
    130     switch (format) {
    131         case HAL_PIXEL_FORMAT_RGB_565:       return MDP_RGB_565;
    132         case HAL_PIXEL_FORMAT_RGBA_5551:     return MDP_RGBA_5551;
    133         case HAL_PIXEL_FORMAT_RGBA_4444:     return MDP_RGBA_4444;
    134         case HAL_PIXEL_FORMAT_RGBX_8888:     return MDP_RGBX_8888;
    135         case HAL_PIXEL_FORMAT_BGRX_8888:     return MDP_BGRX_8888;
    136         case HAL_PIXEL_FORMAT_RGB_888:       return MDP_RGB_888;
    137         case HAL_PIXEL_FORMAT_RGBA_8888:     return MDP_RGBA_8888;
    138         case HAL_PIXEL_FORMAT_BGRA_8888:     return MDP_BGRA_8888;
    139         case HAL_PIXEL_FORMAT_YCrCb_422_I:   return MDP_YCRYCB_H2V1;
    140         case HAL_PIXEL_FORMAT_YCbCr_422_I:   return MDP_YCBYCR_H2V1;
    141         case HAL_PIXEL_FORMAT_YCrCb_422_SP:  return MDP_Y_CRCB_H2V1;
    142         case HAL_PIXEL_FORMAT_YCrCb_420_SP:  return MDP_Y_CRCB_H2V2;
    143         case HAL_PIXEL_FORMAT_YCbCr_422_SP:  return MDP_Y_CBCR_H2V1;
    144         case HAL_PIXEL_FORMAT_YCbCr_420_SP:  return MDP_Y_CBCR_H2V2;
    145         case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO: return MDP_Y_CBCR_H2V2_ADRENO;
    146         case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS: return MDP_Y_CBCR_H2V2_VENUS;
    147         case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS: return MDP_Y_CRCB_H2V2_VENUS;
    148         case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: return MDP_Y_CBCR_H2V2;
    149         case HAL_PIXEL_FORMAT_CbYCrY_422_I: return MDP_CBYCRY_H2V1;
    150         case HAL_PIXEL_FORMAT_BGR_888: return MDP_BGR_888;
    151     }
    152     return -1;
    153 }
    154 
    155 /** convert from copybit image to mdp image structure */
    156 static void set_image(struct mdp_img *img, const struct copybit_image_t *rhs)
    157 {
    158     private_handle_t* hnd = (private_handle_t*)rhs->handle;
    159     if(hnd == NULL){
    160         ALOGE("copybit: Invalid handle");
    161         return;
    162     }
    163     img->width      = rhs->w;
    164     img->height     = rhs->h;
    165     img->format     = get_format(rhs->format);
    166     img->offset     = (uint32_t)hnd->offset;
    167     img->memory_id  = hnd->fd;
    168 }
    169 /** setup rectangles */
    170 static bool set_rects(struct copybit_context_t *dev,
    171                       struct mdp_blit_req *e,
    172                       const struct copybit_rect_t *dst,
    173                       const struct copybit_rect_t *src,
    174                       const struct copybit_rect_t *scissor) {
    175     struct copybit_rect_t clip;
    176     intersect(&clip, scissor, dst);
    177 
    178     if (!validateCopybitRect(&clip))
    179        return false;
    180 
    181     e->dst_rect.x  = clip.l;
    182     e->dst_rect.y  = clip.t;
    183     e->dst_rect.w  = clip.r - clip.l;
    184     e->dst_rect.h  = clip.b - clip.t;
    185 
    186     uint32_t W, H, delta_x, delta_y;
    187     if (dev->mFlags & COPYBIT_TRANSFORM_ROT_90) {
    188         delta_x = (clip.t - dst->t);
    189         delta_y = (dst->r - clip.r);
    190         e->src_rect.w = (clip.b - clip.t);
    191         e->src_rect.h = (clip.r - clip.l);
    192         W = dst->b - dst->t;
    193         H = dst->r - dst->l;
    194     } else {
    195         delta_x  = (clip.l - dst->l);
    196         delta_y  = (clip.t - dst->t);
    197         e->src_rect.w  = (clip.r - clip.l);
    198         e->src_rect.h  = (clip.b - clip.t);
    199         W = dst->r - dst->l;
    200         H = dst->b - dst->t;
    201     }
    202 
    203     MULDIV(&delta_x, &e->src_rect.w, src->r - src->l, W);
    204     MULDIV(&delta_y, &e->src_rect.h, src->b - src->t, H);
    205 
    206     e->src_rect.x = delta_x + src->l;
    207     e->src_rect.y = delta_y + src->t;
    208 
    209     if (dev->mFlags & COPYBIT_TRANSFORM_FLIP_V) {
    210         if (dev->mFlags & COPYBIT_TRANSFORM_ROT_90) {
    211             e->src_rect.x = (src->l + src->r) - (e->src_rect.x + e->src_rect.w);
    212         }else{
    213             e->src_rect.y = (src->t + src->b) - (e->src_rect.y + e->src_rect.h);
    214         }
    215     }
    216 
    217     if (dev->mFlags & COPYBIT_TRANSFORM_FLIP_H) {
    218         if (dev->mFlags & COPYBIT_TRANSFORM_ROT_90) {
    219             e->src_rect.y = (src->t + src->b) - (e->src_rect.y + e->src_rect.h);
    220         }else{
    221             e->src_rect.x = (src->l + src->r) - (e->src_rect.x + e->src_rect.w);
    222         }
    223     }
    224     return true;
    225 }
    226 
    227 /** setup mdp request */
    228 static void set_infos(struct copybit_context_t *dev,
    229                       struct mdp_blit_req *req, int flags)
    230 {
    231     req->alpha = dev->mAlpha;
    232     req->fps = dev->dynamic_fps;
    233     req->transp_mask = MDP_TRANSP_NOP;
    234     req->flags = dev->mFlags | flags;
    235     // check if we are blitting to f/b
    236     if (COPYBIT_ENABLE == dev->mBlitToFB) {
    237         req->flags |= MDP_MEMORY_ID_TYPE_FB;
    238     }
    239 #if defined(COPYBIT_QSD8K)
    240     req->flags |= MDP_BLEND_FG_PREMULT;
    241 #endif
    242 }
    243 
    244 /** copy the bits */
    245 static int msm_copybit(struct copybit_context_t *dev, void const *list)
    246 {
    247     int err;
    248     if (dev->relFence != -1) {
    249         close(dev->relFence);
    250         dev->relFence = -1;
    251     }
    252     err = ioctl(dev->mFD, MSMFB_ASYNC_BLIT,
    253                     (struct mdp_async_blit_req_list const*)list);
    254     ALOGE_IF(err<0, "copyBits failed (%s)", strerror(errno));
    255     if (err == 0) {
    256         return 0;
    257     } else {
    258 #if DEBUG_MDP_ERRORS
    259         struct mdp_async_blit_req_list const* l =
    260             (struct mdp_async_blit_req_list const*)list;
    261         for (unsigned int i=0 ; i<l->count ; i++) {
    262             ALOGE("%d: src={w=%d, h=%d, f=%d, rect={%d,%d,%d,%d}}\n"
    263                   "    dst={w=%d, h=%d, f=%d, rect={%d,%d,%d,%d}}\n"
    264                   "    flags=%08x, fps=%d"
    265                   ,
    266                   i,
    267                   l->req[i].src.width,
    268                   l->req[i].src.height,
    269                   l->req[i].src.format,
    270                   l->req[i].src_rect.x,
    271                   l->req[i].src_rect.y,
    272                   l->req[i].src_rect.w,
    273                   l->req[i].src_rect.h,
    274                   l->req[i].dst.width,
    275                   l->req[i].dst.height,
    276                   l->req[i].dst.format,
    277                   l->req[i].dst_rect.x,
    278                   l->req[i].dst_rect.y,
    279                   l->req[i].dst_rect.w,
    280                   l->req[i].dst_rect.h,
    281                   l->req[i].flags,
    282                   l->req[i].fps
    283                  );
    284         }
    285 #endif
    286         return -errno;
    287     }
    288 }
    289 
    290 /*****************************************************************************/
    291 
    292 /** Set a parameter to value */
    293 static int set_parameter_copybit(
    294     struct copybit_device_t *dev,
    295     int name,
    296     int value)
    297 {
    298     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    299     int status = 0;
    300     if (ctx) {
    301         switch(name) {
    302             case COPYBIT_ROTATION_DEG:
    303                 switch (value) {
    304                     case 0:
    305                         ctx->mFlags &= ~0x7;
    306                         break;
    307                     case 90:
    308                         ctx->mFlags &= ~0x7;
    309                         ctx->mFlags |= MDP_ROT_90;
    310                         break;
    311                     case 180:
    312                         ctx->mFlags &= ~0x7;
    313                         ctx->mFlags |= MDP_ROT_180;
    314                         break;
    315                     case 270:
    316                         ctx->mFlags &= ~0x7;
    317                         ctx->mFlags |= MDP_ROT_270;
    318                         break;
    319                     default:
    320                         ALOGE("Invalid value for COPYBIT_ROTATION_DEG");
    321                         status = -EINVAL;
    322                         break;
    323                 }
    324                 break;
    325             case COPYBIT_PLANE_ALPHA:
    326                 if (value < 0)      value = MDP_ALPHA_NOP;
    327                 if (value >= 256)   value = 255;
    328                 ctx->mAlpha = (uint8_t)value;
    329                 break;
    330             case COPYBIT_DYNAMIC_FPS:
    331                 ctx->dynamic_fps = (uint8_t)value;
    332                 break;
    333             case COPYBIT_DITHER:
    334                 if (value == COPYBIT_ENABLE) {
    335                     ctx->mFlags |= MDP_DITHER;
    336                 } else if (value == COPYBIT_DISABLE) {
    337                     ctx->mFlags &= ~MDP_DITHER;
    338                 }
    339                 break;
    340             case COPYBIT_BLUR:
    341                 if (value == COPYBIT_ENABLE) {
    342                     ctx->mFlags |= MDP_BLUR;
    343                 } else if (value == COPYBIT_DISABLE) {
    344                     ctx->mFlags &= ~MDP_BLUR;
    345                 }
    346                 break;
    347             case COPYBIT_BLEND_MODE:
    348                 if(value == COPYBIT_BLENDING_PREMULT) {
    349                     ctx->mFlags |= MDP_BLEND_FG_PREMULT;
    350                 } else {
    351                     ctx->mFlags &= ~MDP_BLEND_FG_PREMULT;
    352                 }
    353                 break;
    354             case COPYBIT_TRANSFORM:
    355                 ctx->mFlags &= ~0x7;
    356                 ctx->mFlags |= value & 0x7;
    357                 break;
    358             case COPYBIT_BLIT_TO_FRAMEBUFFER:
    359                 if (COPYBIT_ENABLE == value) {
    360                     ctx->mBlitToFB = value;
    361                 } else if (COPYBIT_DISABLE == value) {
    362                     ctx->mBlitToFB = value;
    363                 } else {
    364                     ALOGE ("%s:Invalid input for COPYBIT_BLIT_TO_FRAMEBUFFER : %d",
    365                             __FUNCTION__, value);
    366                 }
    367                 break;
    368             case COPYBIT_FG_LAYER:
    369                 if(value == COPYBIT_ENABLE) {
    370                      ctx->mFlags |= MDP_IS_FG;
    371                 } else if (value == COPYBIT_DISABLE) {
    372                     ctx->mFlags &= ~MDP_IS_FG;
    373                 }
    374                 break ;
    375             default:
    376                 status = -EINVAL;
    377                 break;
    378         }
    379     } else {
    380         status = -EINVAL;
    381     }
    382     return status;
    383 }
    384 
    385 /** Get a static info value */
    386 static int get(struct copybit_device_t *dev, int name)
    387 {
    388     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    389     int value;
    390     if (ctx) {
    391         switch(name) {
    392             case COPYBIT_MINIFICATION_LIMIT:
    393                 value = MAX_SCALE_FACTOR;
    394                 break;
    395             case COPYBIT_MAGNIFICATION_LIMIT:
    396                 value = MAX_SCALE_FACTOR;
    397                 break;
    398             case COPYBIT_SCALING_FRAC_BITS:
    399                 value = 32;
    400                 break;
    401             case COPYBIT_ROTATION_STEP_DEG:
    402                 value = 90;
    403                 break;
    404             default:
    405                 value = -EINVAL;
    406         }
    407     } else {
    408         value = -EINVAL;
    409     }
    410     return value;
    411 }
    412 
    413 static int set_sync_copybit(struct copybit_device_t *dev,
    414     int acquireFenceFd)
    415 {
    416     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    417     if (acquireFenceFd != -1) {
    418         if (ctx->list.sync.acq_fen_fd_cnt < (MDP_MAX_FENCE_FD - 1)) {
    419             ctx->acqFence[ctx->list.sync.acq_fen_fd_cnt++] = acquireFenceFd;
    420         } else {
    421             int ret = -EINVAL;
    422             struct blitReq *list = &ctx->list;
    423 
    424             // Since fence is full kick off what is already in the list
    425             ret = msm_copybit(ctx, list);
    426             if (ret < 0) {
    427                 ALOGE("%s: Blit call failed", __FUNCTION__);
    428                 return -EINVAL;
    429             }
    430             list->count = 0;
    431             list->sync.acq_fen_fd_cnt = 0;
    432             ctx->acqFence[list->sync.acq_fen_fd_cnt++] = acquireFenceFd;
    433         }
    434     }
    435     return 0;
    436 }
    437 
    438 /** do a stretch blit type operation */
    439 static int stretch_copybit(
    440     struct copybit_device_t *dev,
    441     struct copybit_image_t const *dst,
    442     struct copybit_image_t const *src,
    443     struct copybit_rect_t const *dst_rect,
    444     struct copybit_rect_t const *src_rect,
    445     struct copybit_region_t const *region)
    446 {
    447     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    448     struct blitReq *list;
    449     int status = 0;
    450     private_handle_t *yv12_handle = NULL;
    451 
    452     if (ctx) {
    453         list = &ctx->list;
    454 
    455         if (ctx->mAlpha < 255) {
    456             switch (src->format) {
    457                 // we don't support plane alpha with RGBA formats
    458                 case HAL_PIXEL_FORMAT_RGBA_8888:
    459                 case HAL_PIXEL_FORMAT_BGRA_8888:
    460                 case HAL_PIXEL_FORMAT_RGBA_5551:
    461                 case HAL_PIXEL_FORMAT_RGBA_4444:
    462                     ALOGE ("%s : Unsupported Pixel format %d", __FUNCTION__,
    463                            src->format);
    464                     return -EINVAL;
    465             }
    466         }
    467 
    468         if (src_rect->l < 0 || (uint32_t)src_rect->r > src->w ||
    469             src_rect->t < 0 || (uint32_t)src_rect->b > src->h) {
    470             // this is always invalid
    471             ALOGE ("%s : Invalid source rectangle : src_rect l %d t %d r %d b %d",\
    472                    __FUNCTION__, src_rect->l, src_rect->t, src_rect->r, src_rect->b);
    473 
    474             return -EINVAL;
    475         }
    476 
    477         if (src->w > MAX_DIMENSION || src->h > MAX_DIMENSION) {
    478             ALOGE ("%s : Invalid source dimensions w %d h %d", __FUNCTION__, src->w, src->h);
    479             return -EINVAL;
    480         }
    481 
    482         if (dst->w > MAX_DIMENSION || dst->h > MAX_DIMENSION) {
    483             ALOGE ("%s : Invalid DST dimensions w %d h %d", __FUNCTION__, dst->w, dst->h);
    484             return -EINVAL;
    485         }
    486 
    487         if(src->format ==  HAL_PIXEL_FORMAT_YV12) {
    488             int usage =
    489             GRALLOC_USAGE_PRIVATE_IOMMU_HEAP | GRALLOC_USAGE_PRIVATE_UNCACHED;
    490             if (0 == alloc_buffer(&yv12_handle,src->w,src->h,
    491                                   src->format, usage)){
    492                 if(0 == convertYV12toYCrCb420SP(src,yv12_handle)){
    493                     (const_cast<copybit_image_t *>(src))->format =
    494                         HAL_PIXEL_FORMAT_YCrCb_420_SP;
    495                     (const_cast<copybit_image_t *>(src))->handle =
    496                         yv12_handle;
    497                     (const_cast<copybit_image_t *>(src))->base =
    498                         (void *)yv12_handle->base;
    499                 }
    500                 else{
    501                     ALOGE("Error copybit conversion from yv12 failed");
    502                     if(yv12_handle)
    503                         free_buffer(yv12_handle);
    504                     return -EINVAL;
    505                 }
    506             }
    507             else{
    508                 ALOGE("Error:unable to allocate memeory for yv12 software conversion");
    509                 return -EINVAL;
    510             }
    511         }
    512         const uint32_t maxCount =
    513                 (uint32_t)(sizeof(list->req)/sizeof(list->req[0]));
    514         const struct copybit_rect_t bounds = { 0, 0, (int)dst->w, (int)dst->h };
    515         struct copybit_rect_t clip;
    516         status = 0;
    517         while ((status == 0) && region->next(region, &clip)) {
    518             intersect(&clip, &bounds, &clip);
    519             mdp_blit_req* req = &list->req[list->count];
    520             int flags = 0;
    521 
    522             private_handle_t* src_hnd = (private_handle_t*)src->handle;
    523             if(src_hnd != NULL &&
    524                 (!(src_hnd->flags & private_handle_t::PRIV_FLAGS_CACHED))) {
    525                 flags |=  MDP_BLIT_NON_CACHED;
    526             }
    527 
    528             // Set Color Space for MDP to configure CSC matrix
    529             req->color_space = ITU_R_601;
    530             MetaData_t *metadata = NULL;
    531 
    532             if (src_hnd != NULL)
    533                 metadata = (MetaData_t *)src_hnd->base_metadata;
    534 
    535             if (metadata && (metadata->operation & UPDATE_COLOR_SPACE)) {
    536                 req->color_space = metadata->colorSpace;
    537             }
    538 
    539             set_infos(ctx, req, flags);
    540             set_image(&req->dst, dst);
    541             set_image(&req->src, src);
    542             if (set_rects(ctx, req, dst_rect, src_rect, &clip) == false)
    543                 continue;
    544 
    545             if (req->src_rect.w<=0 || req->src_rect.h<=0)
    546                 continue;
    547 
    548             if (req->dst_rect.w<=0 || req->dst_rect.h<=0)
    549                 continue;
    550 
    551             if (++list->count == maxCount) {
    552                 status = msm_copybit(ctx, list);
    553                 list->sync.acq_fen_fd_cnt = 0;
    554                 list->count = 0;
    555             }
    556         }
    557         if(yv12_handle) {
    558             //Before freeing the buffer we need buffer passed through blit call
    559             if (list->count != 0) {
    560                 status = msm_copybit(ctx, list);
    561                 list->sync.acq_fen_fd_cnt = 0;
    562                 list->count = 0;
    563             }
    564             free_buffer(yv12_handle);
    565         }
    566     } else {
    567         ALOGE ("%s : Invalid COPYBIT context", __FUNCTION__);
    568         status = -EINVAL;
    569     }
    570     return status;
    571 }
    572 
    573 /** Perform a blit type operation */
    574 static int blit_copybit(
    575     struct copybit_device_t *dev,
    576     struct copybit_image_t const *dst,
    577     struct copybit_image_t const *src,
    578     struct copybit_region_t const *region)
    579 {
    580     struct copybit_rect_t dr = { 0, 0, (int)dst->w, (int)dst->h };
    581     struct copybit_rect_t sr = { 0, 0, (int)src->w, (int)src->h };
    582     return stretch_copybit(dev, dst, src, &dr, &sr, region);
    583 }
    584 
    585 static int finish_copybit(struct copybit_device_t *dev)
    586 {
    587     // NOP for MDP copybit
    588     if(!dev)
    589        return -EINVAL;
    590 
    591     return 0;
    592 }
    593 static int clear_copybit(struct copybit_device_t *dev,
    594                          struct copybit_image_t const *buf,
    595                          struct copybit_rect_t *rect)
    596 {
    597     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    598     uint32_t color = 0; // black color
    599 
    600     if (!ctx) {
    601         ALOGE ("%s: Invalid copybit context", __FUNCTION__);
    602         return -EINVAL;
    603     }
    604 
    605     struct blitReq list1;
    606     memset((char *)&list1 , 0 ,sizeof (struct blitReq) );
    607     list1.count = 1;
    608     int my_tmp_get_fence = -1;
    609 
    610     list1.sync.acq_fen_fd  =  ctx->acqFence;
    611     list1.sync.rel_fen_fd  =  &my_tmp_get_fence;
    612     list1.sync.acq_fen_fd_cnt = ctx->list.sync.acq_fen_fd_cnt;
    613     mdp_blit_req* req = &list1.req[0];
    614 
    615     if(!req) {
    616         ALOGE ("%s : Invalid request", __FUNCTION__);
    617         return -EINVAL;
    618     }
    619 
    620     set_image(&req->dst, buf);
    621     set_image(&req->src, buf);
    622 
    623     if (rect->l < 0 || (uint32_t)(rect->r - rect->l) > req->dst.width ||
    624        rect->t < 0 || (uint32_t)(rect->b - rect->t) > req->dst.height) {
    625        ALOGE ("%s : Invalid rect : src_rect l %d t %d r %d b %d",\
    626        __FUNCTION__, rect->l, rect->t, rect->r, rect->b);
    627        return -EINVAL;
    628     }
    629 
    630     req->dst_rect.x  = rect->l;
    631     req->dst_rect.y  = rect->t;
    632     req->dst_rect.w  = rect->r - rect->l;
    633     req->dst_rect.h  = rect->b - rect->t;
    634 
    635     req->src_rect = req->dst_rect;
    636 
    637     req->const_color.b = (uint32_t)((color >> 16) & 0xff);
    638     req->const_color.g = (uint32_t)((color >> 8) & 0xff);
    639     req->const_color.r = (uint32_t)((color >> 0) & 0xff);
    640     req->const_color.alpha = MDP_ALPHA_NOP;
    641 
    642     req->transp_mask = MDP_TRANSP_NOP;
    643     req->flags = MDP_SOLID_FILL | MDP_MEMORY_ID_TYPE_FB | MDP_BLEND_FG_PREMULT;
    644     int status = msm_copybit(ctx, &list1);
    645 
    646     ctx->list.sync.acq_fen_fd_cnt = 0;
    647     if (my_tmp_get_fence !=  -1)
    648         close(my_tmp_get_fence);
    649 
    650     return status;
    651 }
    652 
    653 /** Fill the rect on dst with RGBA color **/
    654 static int fill_color(struct copybit_device_t *dev,
    655                       struct copybit_image_t const *dst,
    656                       struct copybit_rect_t const *rect,
    657                       uint32_t color)
    658 {
    659     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    660     if (!ctx) {
    661         ALOGE("%s: Invalid copybit context", __FUNCTION__);
    662         return -EINVAL;
    663     }
    664 
    665     if (dst->w > MAX_DIMENSION || dst->h > MAX_DIMENSION) {
    666         ALOGE("%s: Invalid DST w=%d h=%d", __FUNCTION__, dst->w, dst->h);
    667         return -EINVAL;
    668     }
    669 
    670     if (rect->l < 0 || (uint32_t)(rect->r - rect->l) > dst->w ||
    671         rect->t < 0 || (uint32_t)(rect->b - rect->t) > dst->h) {
    672         ALOGE("%s: Invalid destination rect: l=%d t=%d r=%d b=%d",
    673                 __FUNCTION__, rect->l, rect->t, rect->r, rect->b);
    674         return -EINVAL;
    675     }
    676 
    677     int status = 0;
    678     struct blitReq* list = &ctx->list;
    679     mdp_blit_req* req = &list->req[list->count++];
    680     set_infos(ctx, req, MDP_SOLID_FILL);
    681     set_image(&req->src, dst);
    682     set_image(&req->dst, dst);
    683 
    684     req->dst_rect.x = rect->l;
    685     req->dst_rect.y = rect->t;
    686     req->dst_rect.w = rect->r - rect->l;
    687     req->dst_rect.h = rect->b - rect->t;
    688     req->src_rect = req->dst_rect;
    689 
    690     req->const_color.r = (uint32_t)((color >> 0) & 0xff);
    691     req->const_color.g = (uint32_t)((color >> 8) & 0xff);
    692     req->const_color.b = (uint32_t)((color >> 16) & 0xff);
    693     req->const_color.alpha = (uint32_t)((color >> 24) & 0xff);
    694 
    695     if (list->count == sizeof(list->req)/sizeof(list->req[0])) {
    696         status = msm_copybit(ctx, list);
    697         list->sync.acq_fen_fd_cnt = 0;
    698         list->count = 0;
    699     }
    700     return status;
    701 }
    702 
    703 /*****************************************************************************/
    704 
    705 /** Close the copybit device */
    706 static int close_copybit(struct hw_device_t *dev)
    707 {
    708     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    709     if (ctx) {
    710         close(ctx->mFD);
    711         free(ctx);
    712     }
    713     return 0;
    714 }
    715 
    716 static int flush_get_fence(struct copybit_device_t *dev, int* fd)
    717 {
    718     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    719     struct blitReq *list = &ctx->list;
    720     int ret = -EINVAL;
    721 
    722     if (list->count) {
    723         ret = msm_copybit(ctx, list);
    724         if (ret < 0)
    725             ALOGE("%s: Blit call failed", __FUNCTION__);
    726         list->count = 0;
    727     }
    728     *fd = ctx->relFence;
    729     list->sync.acq_fen_fd_cnt = 0;
    730     ctx->relFence = -1;
    731     return ret;
    732 }
    733 
    734 /** Open a new instance of a copybit device using name */
    735 static int open_copybit(const struct hw_module_t* module, const char* name,
    736                         struct hw_device_t** device)
    737 {
    738     int status = -EINVAL;
    739 
    740     if (strcmp(name, COPYBIT_HARDWARE_COPYBIT0)) {
    741         return COPYBIT_FAILURE;
    742     }
    743     copybit_context_t *ctx;
    744     ctx = (copybit_context_t *)malloc(sizeof(copybit_context_t));
    745 
    746     if (ctx == NULL ) {
    747        return COPYBIT_FAILURE;
    748     }
    749 
    750     memset(ctx, 0, sizeof(*ctx));
    751 
    752     ctx->device.common.tag = HARDWARE_DEVICE_TAG;
    753     ctx->device.common.version = 1;
    754     ctx->device.common.module = const_cast<hw_module_t*>(module);
    755     ctx->device.common.close = close_copybit;
    756     ctx->device.set_parameter = set_parameter_copybit;
    757     ctx->device.get = get;
    758     ctx->device.blit = blit_copybit;
    759     ctx->device.set_sync = set_sync_copybit;
    760     ctx->device.stretch = stretch_copybit;
    761     ctx->device.finish = finish_copybit;
    762     ctx->device.fill_color = fill_color;
    763     ctx->device.flush_get_fence = flush_get_fence;
    764     ctx->device.clear = clear_copybit;
    765     ctx->mAlpha = MDP_ALPHA_NOP;
    766     //dynamic_fps is zero means default
    767     //panel refresh rate for driver.
    768     ctx->dynamic_fps = 0;
    769     ctx->mFlags = 0;
    770     ctx->sync.flags = 0;
    771     ctx->relFence = -1;
    772     for (int i=0; i < MDP_MAX_FENCE_FD; i++) {
    773         ctx->acqFence[i] = -1;
    774     }
    775     ctx->sync.acq_fen_fd = ctx->acqFence;
    776     ctx->sync.rel_fen_fd = &ctx->relFence;
    777     ctx->list.count = 0;
    778     ctx->list.sync.acq_fen_fd_cnt = 0;
    779     ctx->list.sync.rel_fen_fd = ctx->sync.rel_fen_fd;
    780     ctx->list.sync.acq_fen_fd = ctx->sync.acq_fen_fd;
    781     ctx->mFD = open("/dev/graphics/fb0", O_RDWR, 0);
    782     if (ctx->mFD < 0) {
    783         status = errno;
    784         ALOGE("Error opening frame buffer errno=%d (%s)",
    785               status, strerror(status));
    786         status = -status;
    787     } else {
    788         status = 0;
    789         *device = &ctx->device.common;
    790     }
    791     return status;
    792 }
    793