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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 <cutils/log.h>
     22 
     23 #include <linux/msm_mdp.h>
     24 #include <linux/fb.h>
     25 
     26 #include <stdint.h>
     27 #include <string.h>
     28 #include <unistd.h>
     29 #include <errno.h>
     30 #include <fcntl.h>
     31 
     32 #include <sys/ioctl.h>
     33 #include <sys/types.h>
     34 #include <sys/mman.h>
     35 
     36 #include <copybit.h>
     37 
     38 #include "gralloc_priv.h"
     39 #include "software_converter.h"
     40 #include <qdMetaData.h>
     41 
     42 #define DEBUG_MDP_ERRORS 1
     43 
     44 /******************************************************************************/
     45 
     46 #define MAX_SCALE_FACTOR    (4)
     47 #define MAX_DIMENSION       (4096)
     48 
     49 /******************************************************************************/
     50 struct blitReq{
     51     struct  mdp_buf_sync sync;
     52     uint32_t count;
     53     struct mdp_blit_req req[10];
     54 };
     55 
     56 /** State information for each device instance */
     57 struct copybit_context_t {
     58     struct copybit_device_t device;
     59     int     mFD;
     60     uint8_t mAlpha;
     61     int     mFlags;
     62     bool    mBlitToFB;
     63     int     acqFence[MDP_MAX_FENCE_FD];
     64     int     relFence;
     65     struct  mdp_buf_sync sync;
     66     struct  blitReq list;
     67     uint8_t dynamic_fps;
     68 };
     69 
     70 /**
     71  * Common hardware methods
     72  */
     73 
     74 static int open_copybit(const struct hw_module_t* module, const char* name,
     75                         struct hw_device_t** device);
     76 
     77 static struct hw_module_methods_t copybit_module_methods = {
     78 open:  open_copybit
     79 };
     80 
     81 /*
     82  * The COPYBIT Module
     83  */
     84 struct copybit_module_t HAL_MODULE_INFO_SYM = {
     85 common: {
     86 tag: HARDWARE_MODULE_TAG,
     87      version_major: 1,
     88      version_minor: 0,
     89      id: COPYBIT_HARDWARE_MODULE_ID,
     90      name: "QCT MSM7K COPYBIT Module",
     91      author: "Google, Inc.",
     92      methods: &copybit_module_methods
     93         }
     94 };
     95 
     96 /******************************************************************************/
     97 
     98 /** min of int a, b */
     99 static inline int min(int a, int b) {
    100     return (a<b) ? a : b;
    101 }
    102 
    103 /** max of int a, b */
    104 static inline int max(int a, int b) {
    105     return (a>b) ? a : b;
    106 }
    107 
    108 /** scale each parameter by mul/div. Assume div isn't 0 */
    109 static inline void MULDIV(uint32_t *a, uint32_t *b, int mul, int div) {
    110     if (mul != div) {
    111         *a = (mul * *a) / div;
    112         *b = (mul * *b) / div;
    113     }
    114 }
    115 
    116 /** Determine the intersection of lhs & rhs store in out */
    117 static void intersect(struct copybit_rect_t *out,
    118                       const struct copybit_rect_t *lhs,
    119                       const struct copybit_rect_t *rhs) {
    120     out->l = max(lhs->l, rhs->l);
    121     out->t = max(lhs->t, rhs->t);
    122     out->r = min(lhs->r, rhs->r);
    123     out->b = min(lhs->b, rhs->b);
    124 }
    125 
    126 static bool validateCopybitRect(struct copybit_rect_t *rect) {
    127     return ((rect->b > rect->t) && (rect->r > rect->l)) ;
    128 }
    129 
    130 /** convert COPYBIT_FORMAT to MDP format */
    131 static int get_format(int format) {
    132     switch (format) {
    133         case HAL_PIXEL_FORMAT_RGB_565:       return MDP_RGB_565;
    134         case HAL_PIXEL_FORMAT_RGBA_5551:     return MDP_RGBA_5551;
    135         case HAL_PIXEL_FORMAT_RGBA_4444:     return MDP_RGBA_4444;
    136         case HAL_PIXEL_FORMAT_RGBX_8888:     return MDP_RGBX_8888;
    137         case HAL_PIXEL_FORMAT_BGRX_8888:     return MDP_BGRX_8888;
    138         case HAL_PIXEL_FORMAT_RGB_888:       return MDP_RGB_888;
    139         case HAL_PIXEL_FORMAT_RGBA_8888:     return MDP_RGBA_8888;
    140         case HAL_PIXEL_FORMAT_BGRA_8888:     return MDP_BGRA_8888;
    141         case HAL_PIXEL_FORMAT_YCrCb_422_I:   return MDP_YCRYCB_H2V1;
    142         case HAL_PIXEL_FORMAT_YCbCr_422_I:   return MDP_YCBYCR_H2V1;
    143         case HAL_PIXEL_FORMAT_YCrCb_422_SP:  return MDP_Y_CRCB_H2V1;
    144         case HAL_PIXEL_FORMAT_YCrCb_420_SP:  return MDP_Y_CRCB_H2V2;
    145         case HAL_PIXEL_FORMAT_YCbCr_422_SP:  return MDP_Y_CBCR_H2V1;
    146         case HAL_PIXEL_FORMAT_YCbCr_420_SP:  return MDP_Y_CBCR_H2V2;
    147         case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO: return MDP_Y_CBCR_H2V2_ADRENO;
    148         case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS: return MDP_Y_CBCR_H2V2_VENUS;
    149         case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS: return MDP_Y_CRCB_H2V2_VENUS;
    150         case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: return MDP_Y_CBCR_H2V2;
    151         case HAL_PIXEL_FORMAT_CbYCrY_422_I: return MDP_CBYCRY_H2V1;
    152         case HAL_PIXEL_FORMAT_BGR_888: return MDP_BGR_888;
    153     }
    154     return -1;
    155 }
    156 
    157 /** convert from copybit image to mdp image structure */
    158 static void set_image(struct mdp_img *img, const struct copybit_image_t *rhs)
    159 {
    160     private_handle_t* hnd = (private_handle_t*)rhs->handle;
    161     if(hnd == NULL){
    162         ALOGE("copybit: Invalid handle");
    163         return;
    164     }
    165     img->width      = rhs->w;
    166     img->height     = rhs->h;
    167     img->format     = get_format(rhs->format);
    168     img->offset     = (uint32_t)hnd->offset;
    169     img->memory_id  = hnd->fd;
    170 }
    171 /** setup rectangles */
    172 static bool set_rects(struct copybit_context_t *dev,
    173                       struct mdp_blit_req *e,
    174                       const struct copybit_rect_t *dst,
    175                       const struct copybit_rect_t *src,
    176                       const struct copybit_rect_t *scissor) {
    177     struct copybit_rect_t clip;
    178     intersect(&clip, scissor, dst);
    179 
    180     if (!validateCopybitRect(&clip))
    181        return false;
    182 
    183     e->dst_rect.x  = clip.l;
    184     e->dst_rect.y  = clip.t;
    185     e->dst_rect.w  = clip.r - clip.l;
    186     e->dst_rect.h  = clip.b - clip.t;
    187 
    188     uint32_t W, H, delta_x, delta_y;
    189     if (dev->mFlags & COPYBIT_TRANSFORM_ROT_90) {
    190         delta_x = (clip.t - dst->t);
    191         delta_y = (dst->r - clip.r);
    192         e->src_rect.w = (clip.b - clip.t);
    193         e->src_rect.h = (clip.r - clip.l);
    194         W = dst->b - dst->t;
    195         H = dst->r - dst->l;
    196     } else {
    197         delta_x  = (clip.l - dst->l);
    198         delta_y  = (clip.t - dst->t);
    199         e->src_rect.w  = (clip.r - clip.l);
    200         e->src_rect.h  = (clip.b - clip.t);
    201         W = dst->r - dst->l;
    202         H = dst->b - dst->t;
    203     }
    204 
    205     MULDIV(&delta_x, &e->src_rect.w, src->r - src->l, W);
    206     MULDIV(&delta_y, &e->src_rect.h, src->b - src->t, H);
    207 
    208     e->src_rect.x = delta_x + src->l;
    209     e->src_rect.y = delta_y + src->t;
    210 
    211     if (dev->mFlags & COPYBIT_TRANSFORM_FLIP_V) {
    212         if (dev->mFlags & COPYBIT_TRANSFORM_ROT_90) {
    213             e->src_rect.x = (src->l + src->r) - (e->src_rect.x + e->src_rect.w);
    214         }else{
    215             e->src_rect.y = (src->t + src->b) - (e->src_rect.y + e->src_rect.h);
    216         }
    217     }
    218 
    219     if (dev->mFlags & COPYBIT_TRANSFORM_FLIP_H) {
    220         if (dev->mFlags & COPYBIT_TRANSFORM_ROT_90) {
    221             e->src_rect.y = (src->t + src->b) - (e->src_rect.y + e->src_rect.h);
    222         }else{
    223             e->src_rect.x = (src->l + src->r) - (e->src_rect.x + e->src_rect.w);
    224         }
    225     }
    226     return true;
    227 }
    228 
    229 /** setup mdp request */
    230 static void set_infos(struct copybit_context_t *dev,
    231                       struct mdp_blit_req *req, int flags)
    232 {
    233     req->alpha = dev->mAlpha;
    234     req->fps = dev->dynamic_fps;
    235     req->transp_mask = MDP_TRANSP_NOP;
    236     req->flags = dev->mFlags | flags;
    237     // check if we are blitting to f/b
    238     if (COPYBIT_ENABLE == dev->mBlitToFB) {
    239         req->flags |= MDP_MEMORY_ID_TYPE_FB;
    240     }
    241 #if defined(COPYBIT_QSD8K)
    242     req->flags |= MDP_BLEND_FG_PREMULT;
    243 #endif
    244 }
    245 
    246 /** copy the bits */
    247 static int msm_copybit(struct copybit_context_t *dev, void const *list)
    248 {
    249     int err;
    250     if (dev->relFence != -1) {
    251         close(dev->relFence);
    252         dev->relFence = -1;
    253     }
    254     err = ioctl(dev->mFD, MSMFB_ASYNC_BLIT,
    255                     (struct mdp_async_blit_req_list const*)list);
    256     ALOGE_IF(err<0, "copyBits failed (%s)", strerror(errno));
    257     if (err == 0) {
    258         return 0;
    259     } else {
    260 #if DEBUG_MDP_ERRORS
    261         struct mdp_async_blit_req_list const* l =
    262             (struct mdp_async_blit_req_list const*)list;
    263         for (unsigned int i=0 ; i<l->count ; i++) {
    264             ALOGE("%d: src={w=%d, h=%d, f=%d, rect={%d,%d,%d,%d}}\n"
    265                   "    dst={w=%d, h=%d, f=%d, rect={%d,%d,%d,%d}}\n"
    266                   "    flags=%08x, fps=%d"
    267                   ,
    268                   i,
    269                   l->req[i].src.width,
    270                   l->req[i].src.height,
    271                   l->req[i].src.format,
    272                   l->req[i].src_rect.x,
    273                   l->req[i].src_rect.y,
    274                   l->req[i].src_rect.w,
    275                   l->req[i].src_rect.h,
    276                   l->req[i].dst.width,
    277                   l->req[i].dst.height,
    278                   l->req[i].dst.format,
    279                   l->req[i].dst_rect.x,
    280                   l->req[i].dst_rect.y,
    281                   l->req[i].dst_rect.w,
    282                   l->req[i].dst_rect.h,
    283                   l->req[i].flags,
    284                   l->req[i].fps
    285                  );
    286         }
    287 #endif
    288         return -errno;
    289     }
    290 }
    291 
    292 /*****************************************************************************/
    293 
    294 /** Set a parameter to value */
    295 static int set_parameter_copybit(
    296     struct copybit_device_t *dev,
    297     int name,
    298     int value)
    299 {
    300     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    301     int status = 0;
    302     if (ctx) {
    303         switch(name) {
    304             case COPYBIT_ROTATION_DEG:
    305                 switch (value) {
    306                     case 0:
    307                         ctx->mFlags &= ~0x7;
    308                         break;
    309                     case 90:
    310                         ctx->mFlags &= ~0x7;
    311                         ctx->mFlags |= MDP_ROT_90;
    312                         break;
    313                     case 180:
    314                         ctx->mFlags &= ~0x7;
    315                         ctx->mFlags |= MDP_ROT_180;
    316                         break;
    317                     case 270:
    318                         ctx->mFlags &= ~0x7;
    319                         ctx->mFlags |= MDP_ROT_270;
    320                         break;
    321                     default:
    322                         ALOGE("Invalid value for COPYBIT_ROTATION_DEG");
    323                         status = -EINVAL;
    324                         break;
    325                 }
    326                 break;
    327             case COPYBIT_PLANE_ALPHA:
    328                 if (value < 0)      value = MDP_ALPHA_NOP;
    329                 if (value >= 256)   value = 255;
    330                 ctx->mAlpha = (uint8_t)value;
    331                 break;
    332             case COPYBIT_DYNAMIC_FPS:
    333                 ctx->dynamic_fps = (uint8_t)value;
    334                 break;
    335             case COPYBIT_DITHER:
    336                 if (value == COPYBIT_ENABLE) {
    337                     ctx->mFlags |= MDP_DITHER;
    338                 } else if (value == COPYBIT_DISABLE) {
    339                     ctx->mFlags &= ~MDP_DITHER;
    340                 }
    341                 break;
    342             case COPYBIT_BLUR:
    343                 if (value == COPYBIT_ENABLE) {
    344                     ctx->mFlags |= MDP_BLUR;
    345                 } else if (value == COPYBIT_DISABLE) {
    346                     ctx->mFlags &= ~MDP_BLUR;
    347                 }
    348                 break;
    349             case COPYBIT_BLEND_MODE:
    350                 if(value == COPYBIT_BLENDING_PREMULT) {
    351                     ctx->mFlags |= MDP_BLEND_FG_PREMULT;
    352                 } else {
    353                     ctx->mFlags &= ~MDP_BLEND_FG_PREMULT;
    354                 }
    355                 break;
    356             case COPYBIT_TRANSFORM:
    357                 ctx->mFlags &= ~0x7;
    358                 ctx->mFlags |= value & 0x7;
    359                 break;
    360             case COPYBIT_BLIT_TO_FRAMEBUFFER:
    361                 if (COPYBIT_ENABLE == value) {
    362                     ctx->mBlitToFB = value;
    363                 } else if (COPYBIT_DISABLE == value) {
    364                     ctx->mBlitToFB = value;
    365                 } else {
    366                     ALOGE ("%s:Invalid input for COPYBIT_BLIT_TO_FRAMEBUFFER : %d",
    367                             __FUNCTION__, value);
    368                 }
    369                 break;
    370             case COPYBIT_FG_LAYER:
    371                 if(value == COPYBIT_ENABLE) {
    372                      ctx->mFlags |= MDP_IS_FG;
    373                 } else if (value == COPYBIT_DISABLE) {
    374                     ctx->mFlags &= ~MDP_IS_FG;
    375                 }
    376                 break ;
    377             default:
    378                 status = -EINVAL;
    379                 break;
    380         }
    381     } else {
    382         status = -EINVAL;
    383     }
    384     return status;
    385 }
    386 
    387 /** Get a static info value */
    388 static int get(struct copybit_device_t *dev, int name)
    389 {
    390     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    391     int value;
    392     if (ctx) {
    393         switch(name) {
    394             case COPYBIT_MINIFICATION_LIMIT:
    395                 value = MAX_SCALE_FACTOR;
    396                 break;
    397             case COPYBIT_MAGNIFICATION_LIMIT:
    398                 value = MAX_SCALE_FACTOR;
    399                 break;
    400             case COPYBIT_SCALING_FRAC_BITS:
    401                 value = 32;
    402                 break;
    403             case COPYBIT_ROTATION_STEP_DEG:
    404                 value = 90;
    405                 break;
    406             default:
    407                 value = -EINVAL;
    408         }
    409     } else {
    410         value = -EINVAL;
    411     }
    412     return value;
    413 }
    414 
    415 static int set_sync_copybit(struct copybit_device_t *dev,
    416     int acquireFenceFd)
    417 {
    418     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    419     if (acquireFenceFd != -1) {
    420         if (ctx->list.sync.acq_fen_fd_cnt < (MDP_MAX_FENCE_FD - 1)) {
    421             ctx->acqFence[ctx->list.sync.acq_fen_fd_cnt++] = acquireFenceFd;
    422         } else {
    423             int ret = -EINVAL;
    424             struct blitReq *list = &ctx->list;
    425 
    426             // Since fence is full kick off what is already in the list
    427             ret = msm_copybit(ctx, list);
    428             if (ret < 0) {
    429                 ALOGE("%s: Blit call failed", __FUNCTION__);
    430                 return -EINVAL;
    431             }
    432             list->count = 0;
    433             list->sync.acq_fen_fd_cnt = 0;
    434             ctx->acqFence[list->sync.acq_fen_fd_cnt++] = acquireFenceFd;
    435         }
    436     }
    437     return 0;
    438 }
    439 
    440 /** do a stretch blit type operation */
    441 static int stretch_copybit(
    442     struct copybit_device_t *dev,
    443     struct copybit_image_t const *dst,
    444     struct copybit_image_t const *src,
    445     struct copybit_rect_t const *dst_rect,
    446     struct copybit_rect_t const *src_rect,
    447     struct copybit_region_t const *region)
    448 {
    449     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    450     struct blitReq *list;
    451     int status = 0;
    452     private_handle_t *yv12_handle = NULL;
    453 
    454     if (ctx) {
    455         list = &ctx->list;
    456 
    457         if (ctx->mAlpha < 255) {
    458             switch (src->format) {
    459                 // we don't support plane alpha with RGBA formats
    460                 case HAL_PIXEL_FORMAT_RGBA_8888:
    461                 case HAL_PIXEL_FORMAT_BGRA_8888:
    462                 case HAL_PIXEL_FORMAT_RGBA_5551:
    463                 case HAL_PIXEL_FORMAT_RGBA_4444:
    464                     ALOGE ("%s : Unsupported Pixel format %d", __FUNCTION__,
    465                            src->format);
    466                     return -EINVAL;
    467             }
    468         }
    469 
    470         if (src_rect->l < 0 || (uint32_t)src_rect->r > src->w ||
    471             src_rect->t < 0 || (uint32_t)src_rect->b > src->h) {
    472             // this is always invalid
    473             ALOGE ("%s : Invalid source rectangle : src_rect l %d t %d r %d b %d",\
    474                    __FUNCTION__, src_rect->l, src_rect->t, src_rect->r, src_rect->b);
    475 
    476             return -EINVAL;
    477         }
    478 
    479         if (src->w > MAX_DIMENSION || src->h > MAX_DIMENSION) {
    480             ALOGE ("%s : Invalid source dimensions w %d h %d", __FUNCTION__, src->w, src->h);
    481             return -EINVAL;
    482         }
    483 
    484         if (dst->w > MAX_DIMENSION || dst->h > MAX_DIMENSION) {
    485             ALOGE ("%s : Invalid DST dimensions w %d h %d", __FUNCTION__, dst->w, dst->h);
    486             return -EINVAL;
    487         }
    488 
    489         if(src->format ==  HAL_PIXEL_FORMAT_YV12) {
    490             int usage =
    491             GRALLOC_USAGE_PRIVATE_IOMMU_HEAP | GRALLOC_USAGE_PRIVATE_UNCACHED;
    492             if (0 == alloc_buffer(&yv12_handle,src->w,src->h,
    493                                   src->format, usage)){
    494                 if(0 == convertYV12toYCrCb420SP(src,yv12_handle)){
    495                     (const_cast<copybit_image_t *>(src))->format =
    496                         HAL_PIXEL_FORMAT_YCrCb_420_SP;
    497                     (const_cast<copybit_image_t *>(src))->handle =
    498                         yv12_handle;
    499                     (const_cast<copybit_image_t *>(src))->base =
    500                         (void *)yv12_handle->base;
    501                 }
    502                 else{
    503                     ALOGE("Error copybit conversion from yv12 failed");
    504                     if(yv12_handle)
    505                         free_buffer(yv12_handle);
    506                     return -EINVAL;
    507                 }
    508             }
    509             else{
    510                 ALOGE("Error:unable to allocate memeory for yv12 software conversion");
    511                 return -EINVAL;
    512             }
    513         }
    514         const uint32_t maxCount =
    515                 (uint32_t)(sizeof(list->req)/sizeof(list->req[0]));
    516         const struct copybit_rect_t bounds = { 0, 0, (int)dst->w, (int)dst->h };
    517         struct copybit_rect_t clip;
    518         status = 0;
    519         while ((status == 0) && region->next(region, &clip)) {
    520             intersect(&clip, &bounds, &clip);
    521             mdp_blit_req* req = &list->req[list->count];
    522             int flags = 0;
    523 
    524             private_handle_t* src_hnd = (private_handle_t*)src->handle;
    525             if(src_hnd != NULL &&
    526                 (!(src_hnd->flags & private_handle_t::PRIV_FLAGS_CACHED))) {
    527                 flags |=  MDP_BLIT_NON_CACHED;
    528             }
    529 
    530             // Set Color Space for MDP to configure CSC matrix
    531             req->color_space = ITU_R_601;
    532             MetaData_t *metadata = NULL;
    533 
    534             if (src_hnd != NULL)
    535                 metadata = (MetaData_t *)src_hnd->base_metadata;
    536 
    537             if (metadata && (metadata->operation & UPDATE_COLOR_SPACE)) {
    538                 req->color_space = metadata->colorSpace;
    539             }
    540 
    541             set_infos(ctx, req, flags);
    542             set_image(&req->dst, dst);
    543             set_image(&req->src, src);
    544             if (set_rects(ctx, req, dst_rect, src_rect, &clip) == false)
    545                 continue;
    546 
    547             if (req->src_rect.w<=0 || req->src_rect.h<=0)
    548                 continue;
    549 
    550             if (req->dst_rect.w<=0 || req->dst_rect.h<=0)
    551                 continue;
    552 
    553             if (++list->count == maxCount) {
    554                 status = msm_copybit(ctx, list);
    555                 list->sync.acq_fen_fd_cnt = 0;
    556                 list->count = 0;
    557             }
    558         }
    559         if(yv12_handle) {
    560             //Before freeing the buffer we need buffer passed through blit call
    561             if (list->count != 0) {
    562                 status = msm_copybit(ctx, list);
    563                 list->sync.acq_fen_fd_cnt = 0;
    564                 list->count = 0;
    565             }
    566             free_buffer(yv12_handle);
    567         }
    568     } else {
    569         ALOGE ("%s : Invalid COPYBIT context", __FUNCTION__);
    570         status = -EINVAL;
    571     }
    572     return status;
    573 }
    574 
    575 /** Perform a blit type operation */
    576 static int blit_copybit(
    577     struct copybit_device_t *dev,
    578     struct copybit_image_t const *dst,
    579     struct copybit_image_t const *src,
    580     struct copybit_region_t const *region)
    581 {
    582     struct copybit_rect_t dr = { 0, 0, (int)dst->w, (int)dst->h };
    583     struct copybit_rect_t sr = { 0, 0, (int)src->w, (int)src->h };
    584     return stretch_copybit(dev, dst, src, &dr, &sr, region);
    585 }
    586 
    587 static int finish_copybit(struct copybit_device_t *dev)
    588 {
    589     // NOP for MDP copybit
    590     if(!dev)
    591        return -EINVAL;
    592 
    593     return 0;
    594 }
    595 static int clear_copybit(struct copybit_device_t *dev,
    596                          struct copybit_image_t const *buf,
    597                          struct copybit_rect_t *rect)
    598 {
    599     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    600     uint32_t color = 0; // black color
    601 
    602     if (!ctx) {
    603         ALOGE ("%s: Invalid copybit context", __FUNCTION__);
    604         return -EINVAL;
    605     }
    606 
    607     struct blitReq list1;
    608     memset((char *)&list1 , 0 ,sizeof (struct blitReq) );
    609     list1.count = 1;
    610     int my_tmp_get_fence = -1;
    611 
    612     list1.sync.acq_fen_fd  =  ctx->acqFence;
    613     list1.sync.rel_fen_fd  =  &my_tmp_get_fence;
    614     list1.sync.acq_fen_fd_cnt = ctx->list.sync.acq_fen_fd_cnt;
    615     mdp_blit_req* req = &list1.req[0];
    616 
    617     if(!req) {
    618         ALOGE ("%s : Invalid request", __FUNCTION__);
    619         return -EINVAL;
    620     }
    621 
    622     set_image(&req->dst, buf);
    623     set_image(&req->src, buf);
    624 
    625     if (rect->l < 0 || (uint32_t)(rect->r - rect->l) > req->dst.width ||
    626        rect->t < 0 || (uint32_t)(rect->b - rect->t) > req->dst.height) {
    627        ALOGE ("%s : Invalid rect : src_rect l %d t %d r %d b %d",\
    628        __FUNCTION__, rect->l, rect->t, rect->r, rect->b);
    629        return -EINVAL;
    630     }
    631 
    632     req->dst_rect.x  = rect->l;
    633     req->dst_rect.y  = rect->t;
    634     req->dst_rect.w  = rect->r - rect->l;
    635     req->dst_rect.h  = rect->b - rect->t;
    636 
    637     req->src_rect = req->dst_rect;
    638 
    639     req->const_color.b = (uint32_t)((color >> 16) & 0xff);
    640     req->const_color.g = (uint32_t)((color >> 8) & 0xff);
    641     req->const_color.r = (uint32_t)((color >> 0) & 0xff);
    642     req->const_color.alpha = MDP_ALPHA_NOP;
    643 
    644     req->transp_mask = MDP_TRANSP_NOP;
    645     req->flags = MDP_SOLID_FILL | MDP_MEMORY_ID_TYPE_FB | MDP_BLEND_FG_PREMULT;
    646     int status = msm_copybit(ctx, &list1);
    647 
    648     ctx->list.sync.acq_fen_fd_cnt = 0;
    649     if (my_tmp_get_fence !=  -1)
    650         close(my_tmp_get_fence);
    651 
    652     return status;
    653 }
    654 
    655 /** Fill the rect on dst with RGBA color **/
    656 static int fill_color(struct copybit_device_t *dev,
    657                       struct copybit_image_t const *dst,
    658                       struct copybit_rect_t const *rect,
    659                       uint32_t color)
    660 {
    661     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    662     if (!ctx) {
    663         ALOGE("%s: Invalid copybit context", __FUNCTION__);
    664         return -EINVAL;
    665     }
    666 
    667     if (dst->w > MAX_DIMENSION || dst->h > MAX_DIMENSION) {
    668         ALOGE("%s: Invalid DST w=%d h=%d", __FUNCTION__, dst->w, dst->h);
    669         return -EINVAL;
    670     }
    671 
    672     if (rect->l < 0 || (uint32_t)(rect->r - rect->l) > dst->w ||
    673         rect->t < 0 || (uint32_t)(rect->b - rect->t) > dst->h) {
    674         ALOGE("%s: Invalid destination rect: l=%d t=%d r=%d b=%d",
    675                 __FUNCTION__, rect->l, rect->t, rect->r, rect->b);
    676         return -EINVAL;
    677     }
    678 
    679     int status = 0;
    680     struct blitReq* list = &ctx->list;
    681     mdp_blit_req* req = &list->req[list->count++];
    682     set_infos(ctx, req, MDP_SOLID_FILL);
    683     set_image(&req->src, dst);
    684     set_image(&req->dst, dst);
    685 
    686     req->dst_rect.x = rect->l;
    687     req->dst_rect.y = rect->t;
    688     req->dst_rect.w = rect->r - rect->l;
    689     req->dst_rect.h = rect->b - rect->t;
    690     req->src_rect = req->dst_rect;
    691 
    692     req->const_color.r = (uint32_t)((color >> 0) & 0xff);
    693     req->const_color.g = (uint32_t)((color >> 8) & 0xff);
    694     req->const_color.b = (uint32_t)((color >> 16) & 0xff);
    695     req->const_color.alpha = (uint32_t)((color >> 24) & 0xff);
    696 
    697     if (list->count == sizeof(list->req)/sizeof(list->req[0])) {
    698         status = msm_copybit(ctx, list);
    699         list->sync.acq_fen_fd_cnt = 0;
    700         list->count = 0;
    701     }
    702     return status;
    703 }
    704 
    705 /*****************************************************************************/
    706 
    707 /** Close the copybit device */
    708 static int close_copybit(struct hw_device_t *dev)
    709 {
    710     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    711     if (ctx) {
    712         close(ctx->mFD);
    713         free(ctx);
    714     }
    715     return 0;
    716 }
    717 
    718 static int flush_get_fence(struct copybit_device_t *dev, int* fd)
    719 {
    720     struct copybit_context_t* ctx = (struct copybit_context_t*)dev;
    721     struct blitReq *list = &ctx->list;
    722     int ret = -EINVAL;
    723 
    724     if (list->count) {
    725         ret = msm_copybit(ctx, list);
    726         if (ret < 0)
    727             ALOGE("%s: Blit call failed", __FUNCTION__);
    728         list->count = 0;
    729     }
    730     *fd = ctx->relFence;
    731     list->sync.acq_fen_fd_cnt = 0;
    732     ctx->relFence = -1;
    733     return ret;
    734 }
    735 
    736 /** Open a new instance of a copybit device using name */
    737 static int open_copybit(const struct hw_module_t* module, const char* name,
    738                         struct hw_device_t** device)
    739 {
    740     int status = -EINVAL;
    741 
    742     if (strcmp(name, COPYBIT_HARDWARE_COPYBIT0)) {
    743         return COPYBIT_FAILURE;
    744     }
    745     copybit_context_t *ctx;
    746     ctx = (copybit_context_t *)malloc(sizeof(copybit_context_t));
    747 
    748     if (ctx == NULL ) {
    749        return COPYBIT_FAILURE;
    750     }
    751 
    752     memset(ctx, 0, sizeof(*ctx));
    753 
    754     ctx->device.common.tag = HARDWARE_DEVICE_TAG;
    755     ctx->device.common.version = 1;
    756     ctx->device.common.module = const_cast<hw_module_t*>(module);
    757     ctx->device.common.close = close_copybit;
    758     ctx->device.set_parameter = set_parameter_copybit;
    759     ctx->device.get = get;
    760     ctx->device.blit = blit_copybit;
    761     ctx->device.set_sync = set_sync_copybit;
    762     ctx->device.stretch = stretch_copybit;
    763     ctx->device.finish = finish_copybit;
    764     ctx->device.fill_color = fill_color;
    765     ctx->device.flush_get_fence = flush_get_fence;
    766     ctx->device.clear = clear_copybit;
    767     ctx->mAlpha = MDP_ALPHA_NOP;
    768     //dynamic_fps is zero means default
    769     //panel refresh rate for driver.
    770     ctx->dynamic_fps = 0;
    771     ctx->mFlags = 0;
    772     ctx->sync.flags = 0;
    773     ctx->relFence = -1;
    774     for (int i=0; i < MDP_MAX_FENCE_FD; i++) {
    775         ctx->acqFence[i] = -1;
    776     }
    777     ctx->sync.acq_fen_fd = ctx->acqFence;
    778     ctx->sync.rel_fen_fd = &ctx->relFence;
    779     ctx->list.count = 0;
    780     ctx->list.sync.acq_fen_fd_cnt = 0;
    781     ctx->list.sync.rel_fen_fd = ctx->sync.rel_fen_fd;
    782     ctx->list.sync.acq_fen_fd = ctx->sync.acq_fen_fd;
    783     ctx->mFD = open("/dev/graphics/fb0", O_RDWR, 0);
    784     if (ctx->mFD < 0) {
    785         status = errno;
    786         ALOGE("Error opening frame buffer errno=%d (%s)",
    787               status, strerror(status));
    788         status = -status;
    789     } else {
    790         status = 0;
    791         *device = &ctx->device.common;
    792     }
    793     return status;
    794 }
    795