1 /* 2 * Copyright © 2021 Google, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 */ 23 24 #ifndef FREEDRENO_DT_H_ 25 #define FREEDRENO_DT_H_ 26 27 #include <stdbool.h> 28 #include <stdint.h> 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 /** 35 * A helper for extracting information about the GPU from devicetree, and 36 * mapping it's i/o space, etc. 37 * 38 * Note, not-reentrant (due to use of nftw(), etc). 39 */ 40 41 bool fd_dt_find_freqs(uint32_t *min_freq, uint32_t *max_freq); 42 void *fd_dt_find_io(void); 43 44 #ifdef __cplusplus 45 } /* end of extern "C" */ 46 #endif 47 48 #endif /* FREEDRENO_DT_H_ */ 49