67     lv_fs_drv_t * drv = lv_fs_get_drv(letter);  in lv_fs_is_ready()  local
69     if(drv == NULL) return false; /*An unknown driver in not ready*/  in lv_fs_is_ready()
71 …if(drv->ready_cb == NULL) return true; /*Assume the driver is always ready if no handler provided*/  in lv_fs_is_ready()
73     return drv->ready_cb(drv);  in lv_fs_is_ready()
85     lv_fs_drv_t * drv = lv_fs_get_drv(resolved_path.driver_letter);  in lv_fs_open()  local
87     if(drv == NULL) {  in lv_fs_open()
92     if(drv->ready_cb) {  in lv_fs_open()
93         if(drv->ready_cb(drv) == false) {  in lv_fs_open()
99     if(drv->open_cb == NULL) {  in lv_fs_open()
106     file_p->drv = drv;  in lv_fs_open()
109     if(drv->cache_size == LV_FS_CACHE_FROM_BUFFER) {  in lv_fs_open()
113         void * file_d = drv->open_cb(drv, resolved_path.real_path, mode);  in lv_fs_open()
121     if(drv->cache_size) {  in lv_fs_open()
126         if(drv->cache_size == LV_FS_CACHE_FROM_BUFFER) {  in lv_fs_open()
156     if(file_p->drv == NULL) {  in lv_fs_close()
160     if(file_p->drv->close_cb == NULL) {  in lv_fs_close()
166     lv_fs_res_t res = file_p->drv->close_cb(file_p->drv, file_p->file_d);  in lv_fs_close()
168     if(file_p->drv->cache_size && file_p->cache) {  in lv_fs_close()
170         if(file_p->drv->cache_size != LV_FS_CACHE_FROM_BUFFER && file_p->cache->buffer) {  in lv_fs_close()
178     file_p->drv    = NULL;  in lv_fs_close()
189     if(file_p->drv == NULL) return LV_FS_RES_INV_PARAM;  in lv_fs_read()
191     if(file_p->drv->cache_size) {  in lv_fs_read()
192         if(file_p->drv->read_cb == NULL || file_p->drv->seek_cb == NULL) return LV_FS_RES_NOT_IMP;  in lv_fs_read()
195         if(file_p->drv->read_cb == NULL) return LV_FS_RES_NOT_IMP;  in lv_fs_read()
203     if(file_p->drv->cache_size) {  in lv_fs_read()
207         res = file_p->drv->read_cb(file_p->drv, file_p->file_d, buf, btr, &br_tmp);  in lv_fs_read()
221     if(file_p->drv == NULL) {  in lv_fs_write()
225     if(file_p->drv->cache_size) {  in lv_fs_write()
226         if(file_p->drv->write_cb == NULL || file_p->drv->seek_cb == NULL) return LV_FS_RES_NOT_IMP;  in lv_fs_write()
229         if(file_p->drv->write_cb == NULL) return LV_FS_RES_NOT_IMP;  in lv_fs_write()
236     if(file_p->drv->cache_size) {  in lv_fs_write()
240         res = file_p->drv->write_cb(file_p->drv, file_p->file_d, buf, btw, &bw_tmp);  in lv_fs_write()
250     if(file_p->drv == NULL) {  in lv_fs_seek()
254     if(file_p->drv->cache_size) {  in lv_fs_seek()
255         if(file_p->drv->seek_cb == NULL || file_p->drv->tell_cb == NULL) return LV_FS_RES_NOT_IMP;  in lv_fs_seek()
258         if(file_p->drv->seek_cb == NULL) return LV_FS_RES_NOT_IMP;  in lv_fs_seek()
264     if(file_p->drv->cache_size) {  in lv_fs_seek()
268         res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, pos, whence);  in lv_fs_seek()
278     if(file_p->drv == NULL) {  in lv_fs_tell()
283     if(file_p->drv->cache_size == 0 && file_p->drv->tell_cb == NULL) {  in lv_fs_tell()
291     if(file_p->drv->cache_size) {  in lv_fs_tell()
296         res = file_p->drv->tell_cb(file_p->drv, file_p->file_d, pos);  in lv_fs_tell()
310     lv_fs_drv_t * drv = lv_fs_get_drv(resolved_path.driver_letter);  in lv_fs_dir_open()  local
312     if(drv == NULL) {  in lv_fs_dir_open()
316     if(drv->ready_cb) {  in lv_fs_dir_open()
317         if(drv->ready_cb(drv) == false) {  in lv_fs_dir_open()
322     if(drv->dir_open_cb == NULL) {  in lv_fs_dir_open()
328     void * dir_d = drv->dir_open_cb(drv, resolved_path.real_path);  in lv_fs_dir_open()
335     rddir_p->drv = drv;  in lv_fs_dir_open()
349     if(rddir_p->drv == NULL || rddir_p->dir_d == NULL) {  in lv_fs_dir_read()
354     if(rddir_p->drv->dir_read_cb == NULL) {  in lv_fs_dir_read()
361     lv_fs_res_t res = rddir_p->drv->dir_read_cb(rddir_p->drv, rddir_p->dir_d, fn, fn_len);  in lv_fs_dir_read()
370     if(rddir_p->drv == NULL || rddir_p->dir_d == NULL) {  in lv_fs_dir_close()
374     if(rddir_p->drv->dir_close_cb == NULL) {  in lv_fs_dir_close()
380     lv_fs_res_t res = rddir_p->drv->dir_close_cb(rddir_p->drv, rddir_p->dir_d);  in lv_fs_dir_close()
383     rddir_p->drv   = NULL;  in lv_fs_dir_close()
390 void lv_fs_drv_init(lv_fs_drv_t * drv)  in lv_fs_drv_init()  argument
392     lv_memzero(drv, sizeof(lv_fs_drv_t));  in lv_fs_drv_init()
408     lv_fs_drv_t ** drv;  in lv_fs_get_drv()  local
410     LV_LL_READ(fsdrv_ll_p, drv) {  in lv_fs_get_drv()
411         if((*drv)->letter == letter) {  in lv_fs_get_drv()
412             return *drv;  in lv_fs_get_drv()
421     lv_fs_drv_t ** drv;  in lv_fs_get_letters()  local
424     LV_LL_READ(fsdrv_ll_p, drv) {  in lv_fs_get_letters()
425         buf[i] = (*drv)->letter;  in lv_fs_get_letters()
544     uint32_t buffer_size = file_p->drv->cache_size;  in lv_fs_read_cached()
552         if(file_p->drv->cache_size == LV_FS_CACHE_FROM_BUFFER) {  in lv_fs_read_cached()
566             file_p->drv->seek_cb(file_p->drv, file_p->file_d, file_p->cache->end + 1,  in lv_fs_read_cached()
572 …     res = file_p->drv->read_cb(file_p->drv, file_p->file_d, (char *)buf + buffer_remaining_length,  in lv_fs_read_cached()
577 …res = file_p->drv->read_cb(file_p->drv, file_p->file_d, buffer, buffer_size, &bytes_read_to_buffer…  in lv_fs_read_cached()
588         file_p->drv->seek_cb(file_p->drv, file_p->file_d, file_p->cache->file_position,  in lv_fs_read_cached()
594             res = file_p->drv->read_cb(file_p->drv, file_p->file_d, (void *)buf, btr, br);  in lv_fs_read_cached()
605 …res = file_p->drv->read_cb(file_p->drv, file_p->file_d, (void *)buffer, buffer_size, &bytes_read_t…  in lv_fs_read_cached()
627 …res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, file_p->cache->file_position, LV_FS_SEEK_S…  in lv_fs_write_cached()
630     res = file_p->drv->write_cb(file_p->drv, file_p->file_d, buf, btw, bw);  in lv_fs_write_cached()
680                 res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, pos, whence);  in lv_fs_seek_cached()
683                     res = file_p->drv->tell_cb(file_p->drv, file_p->file_d, &tmp_position);  in lv_fs_seek_cached()