1 /* $NetBSD: sunxi_ccu.h,v 1.17 2018/04/01 21:19:17 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _ARM_SUNXI_CCU_H 30 #define _ARM_SUNXI_CCU_H 31 32 #include <dev/clk/clk_backend.h> 33 34 struct sunxi_ccu_softc; 35 struct sunxi_ccu_clk; 36 struct sunxi_ccu_reset; 37 38 /* 39 * Resets 40 */ 41 42 struct sunxi_ccu_reset { 43 bus_size_t reg; 44 uint32_t mask; 45 }; 46 47 #define SUNXI_CCU_RESET(_id, _reg, _bit) \ 48 [_id] = { \ 49 .reg = (_reg), \ 50 .mask = __BIT(_bit), \ 51 } 52 53 /* 54 * Clocks 55 */ 56 57 enum sunxi_ccu_clktype { 58 SUNXI_CCU_UNKNOWN, 59 SUNXI_CCU_GATE, 60 SUNXI_CCU_NM, 61 SUNXI_CCU_NKMP, 62 SUNXI_CCU_PREDIV, 63 SUNXI_CCU_DIV, 64 SUNXI_CCU_PHASE, 65 SUNXI_CCU_FIXED_FACTOR, 66 SUNXI_CCU_FRACTIONAL, 67 }; 68 69 struct sunxi_ccu_gate { 70 bus_size_t reg; 71 uint32_t mask; 72 const char *parent; 73 }; 74 75 int sunxi_ccu_gate_enable(struct sunxi_ccu_softc *, 76 struct sunxi_ccu_clk *, int); 77 const char *sunxi_ccu_gate_get_parent(struct sunxi_ccu_softc *, 78 struct sunxi_ccu_clk *); 79 80 #define SUNXI_CCU_GATE(_id, _name, _pname, _reg, _bit) \ 81 [_id] = { \ 82 .type = SUNXI_CCU_GATE, \ 83 .base.name = (_name), \ 84 .base.flags = CLK_SET_RATE_PARENT, \ 85 .u.gate.parent = (_pname), \ 86 .u.gate.reg = (_reg), \ 87 .u.gate.mask = __BIT(_bit), \ 88 .enable = sunxi_ccu_gate_enable, \ 89 .get_parent = sunxi_ccu_gate_get_parent, \ 90 } 91 92 struct sunxi_ccu_nkmp_tbl { 93 u_int rate; 94 uint32_t n; 95 uint32_t k; 96 uint32_t m; 97 uint32_t p; 98 }; 99 100 struct sunxi_ccu_nkmp { 101 bus_size_t reg; 102 const char *parent; 103 uint32_t n; 104 uint32_t k; 105 uint32_t m; 106 uint32_t p; 107 uint32_t lock; 108 uint32_t enable; 109 uint32_t flags; 110 const struct sunxi_ccu_nkmp_tbl *table; 111 #define SUNXI_CCU_NKMP_DIVIDE_BY_TWO __BIT(0) 112 #define SUNXI_CCU_NKMP_FACTOR_N_EXACT __BIT(1) 113 #define SUNXI_CCU_NKMP_SCALE_CLOCK __BIT(2) 114 #define SUNXI_CCU_NKMP_FACTOR_P_POW2 __BIT(3) 115 #define SUNXI_CCU_NKMP_FACTOR_N_ZERO_IS_ONE __BIT(4) 116 }; 117 118 int sunxi_ccu_nkmp_enable(struct sunxi_ccu_softc *, 119 struct sunxi_ccu_clk *, int); 120 u_int sunxi_ccu_nkmp_get_rate(struct sunxi_ccu_softc *, 121 struct sunxi_ccu_clk *); 122 int sunxi_ccu_nkmp_set_rate(struct sunxi_ccu_softc *, 123 struct sunxi_ccu_clk *, u_int); 124 const char *sunxi_ccu_nkmp_get_parent(struct sunxi_ccu_softc *, 125 struct sunxi_ccu_clk *); 126 127 #define SUNXI_CCU_NKMP_TABLE(_id, _name, _parent, _reg, _n, _k, _m, \ 128 _p, _enable, _lock, _tbl, _flags) \ 129 [_id] = { \ 130 .type = SUNXI_CCU_NKMP, \ 131 .base.name = (_name), \ 132 .u.nkmp.reg = (_reg), \ 133 .u.nkmp.parent = (_parent), \ 134 .u.nkmp.n = (_n), \ 135 .u.nkmp.k = (_k), \ 136 .u.nkmp.m = (_m), \ 137 .u.nkmp.p = (_p), \ 138 .u.nkmp.enable = (_enable), \ 139 .u.nkmp.flags = (_flags), \ 140 .u.nkmp.lock = (_lock), \ 141 .u.nkmp.table = (_tbl), \ 142 .enable = sunxi_ccu_nkmp_enable, \ 143 .get_rate = sunxi_ccu_nkmp_get_rate, \ 144 .set_rate = sunxi_ccu_nkmp_set_rate, \ 145 .get_parent = sunxi_ccu_nkmp_get_parent, \ 146 } 147 148 #define SUNXI_CCU_NKMP(_id, _name, _parent, _reg, _n, _k, _m, \ 149 _p, _enable, _flags) \ 150 SUNXI_CCU_NKMP_TABLE(_id, _name, _parent, _reg, _n, _k, _m, \ 151 _p, _enable, 0, NULL, _flags) 152 153 154 struct sunxi_ccu_nm { 155 bus_size_t reg; 156 const char **parents; 157 u_int nparents; 158 uint32_t n; 159 uint32_t m; 160 uint32_t sel; 161 uint32_t enable; 162 uint32_t flags; 163 #define SUNXI_CCU_NM_POWER_OF_TWO __BIT(0) 164 #define SUNXI_CCU_NM_ROUND_DOWN __BIT(1) 165 #define SUNXI_CCU_NM_DIVIDE_BY_TWO __BIT(2) 166 }; 167 168 int sunxi_ccu_nm_enable(struct sunxi_ccu_softc *, 169 struct sunxi_ccu_clk *, int); 170 u_int sunxi_ccu_nm_get_rate(struct sunxi_ccu_softc *, 171 struct sunxi_ccu_clk *); 172 int sunxi_ccu_nm_set_rate(struct sunxi_ccu_softc *, 173 struct sunxi_ccu_clk *, u_int); 174 int sunxi_ccu_nm_set_parent(struct sunxi_ccu_softc *, 175 struct sunxi_ccu_clk *, 176 const char *); 177 const char *sunxi_ccu_nm_get_parent(struct sunxi_ccu_softc *, 178 struct sunxi_ccu_clk *); 179 180 #define SUNXI_CCU_NM(_id, _name, _parents, _reg, _n, _m, _sel, \ 181 _enable, _flags) \ 182 [_id] = { \ 183 .type = SUNXI_CCU_NM, \ 184 .base.name = (_name), \ 185 .u.nm.reg = (_reg), \ 186 .u.nm.parents = (_parents), \ 187 .u.nm.nparents = __arraycount(_parents), \ 188 .u.nm.n = (_n), \ 189 .u.nm.m = (_m), \ 190 .u.nm.sel = (_sel), \ 191 .u.nm.enable = (_enable), \ 192 .u.nm.flags = (_flags), \ 193 .enable = sunxi_ccu_nm_enable, \ 194 .get_rate = sunxi_ccu_nm_get_rate, \ 195 .set_rate = sunxi_ccu_nm_set_rate, \ 196 .set_parent = sunxi_ccu_nm_set_parent, \ 197 .get_parent = sunxi_ccu_nm_get_parent, \ 198 } 199 200 struct sunxi_ccu_div { 201 bus_size_t reg; 202 const char **parents; 203 u_int nparents; 204 uint32_t div; 205 uint32_t sel; 206 uint32_t enable; 207 uint32_t flags; 208 #define SUNXI_CCU_DIV_POWER_OF_TWO __BIT(0) 209 #define SUNXI_CCU_DIV_ZERO_IS_ONE __BIT(1) 210 #define SUNXI_CCU_DIV_TIMES_TWO __BIT(2) 211 #define SUNXI_CCU_DIV_SET_RATE_PARENT __BIT(3) 212 }; 213 214 int sunxi_ccu_div_enable(struct sunxi_ccu_softc *, 215 struct sunxi_ccu_clk *, int); 216 u_int sunxi_ccu_div_get_rate(struct sunxi_ccu_softc *, 217 struct sunxi_ccu_clk *); 218 int sunxi_ccu_div_set_rate(struct sunxi_ccu_softc *, 219 struct sunxi_ccu_clk *, u_int); 220 int sunxi_ccu_div_set_parent(struct sunxi_ccu_softc *, 221 struct sunxi_ccu_clk *, 222 const char *); 223 const char *sunxi_ccu_div_get_parent(struct sunxi_ccu_softc *, 224 struct sunxi_ccu_clk *); 225 226 #define SUNXI_CCU_DIV(_id, _name, _parents, _reg, _div, \ 227 _sel, _flags) \ 228 SUNXI_CCU_DIV_GATE(_id, _name, _parents, _reg, _div, \ 229 _sel, 0, _flags) 230 231 #define SUNXI_CCU_DIV_GATE(_id, _name, _parents, _reg, _div, \ 232 _sel, _enable, _flags) \ 233 [_id] = { \ 234 .type = SUNXI_CCU_DIV, \ 235 .base.name = (_name), \ 236 .u.div.reg = (_reg), \ 237 .u.div.parents = (_parents), \ 238 .u.div.nparents = __arraycount(_parents), \ 239 .u.div.div = (_div), \ 240 .u.div.sel = (_sel), \ 241 .u.div.enable = (_enable), \ 242 .u.div.flags = (_flags), \ 243 .enable = sunxi_ccu_div_enable, \ 244 .get_rate = sunxi_ccu_div_get_rate, \ 245 .set_rate = sunxi_ccu_div_set_rate, \ 246 .set_parent = sunxi_ccu_div_set_parent, \ 247 .get_parent = sunxi_ccu_div_get_parent, \ 248 } 249 250 /* special case of the div model for display clocks */ 251 int sunxi_ccu_lcdxch0_set_rate(struct sunxi_ccu_softc *, 252 struct sunxi_ccu_clk *, struct sunxi_ccu_clk *, 253 struct sunxi_ccu_clk *, u_int); 254 u_int sunxi_ccu_lcdxch0_round_rate(struct sunxi_ccu_softc *, 255 struct sunxi_ccu_clk *, struct sunxi_ccu_clk *, 256 struct sunxi_ccu_clk *, u_int); 257 258 int sunxi_ccu_lcdxch1_set_rate(struct sunxi_ccu_softc *sc, 259 struct sunxi_ccu_clk *clk, struct sunxi_ccu_clk *pclk, 260 struct sunxi_ccu_clk *pclk_x2, u_int); 261 262 struct sunxi_ccu_prediv { 263 bus_size_t reg; 264 const char **parents; 265 u_int nparents; 266 uint32_t prediv; 267 uint32_t prediv_sel; 268 uint32_t prediv_fixed; 269 uint32_t div; 270 uint32_t sel; 271 uint32_t flags; 272 #define SUNXI_CCU_PREDIV_POWER_OF_TWO __BIT(0) 273 #define SUNXI_CCU_PREDIV_DIVIDE_BY_TWO __BIT(1) 274 }; 275 276 u_int sunxi_ccu_prediv_get_rate(struct sunxi_ccu_softc *, 277 struct sunxi_ccu_clk *); 278 int sunxi_ccu_prediv_set_rate(struct sunxi_ccu_softc *, 279 struct sunxi_ccu_clk *, u_int); 280 int sunxi_ccu_prediv_set_parent(struct sunxi_ccu_softc *, 281 struct sunxi_ccu_clk *, 282 const char *); 283 const char *sunxi_ccu_prediv_get_parent(struct sunxi_ccu_softc *, 284 struct sunxi_ccu_clk *); 285 286 #define SUNXI_CCU_PREDIV(_id, _name, _parents, _reg, _prediv, \ 287 _prediv_sel, _div, _sel, _flags) \ 288 SUNXI_CCU_PREDIV_FIXED(_id, _name, _parents, _reg, _prediv, \ 289 _prediv_sel, 0, _div, _sel, _flags) 290 291 #define SUNXI_CCU_PREDIV_FIXED(_id, _name, _parents, _reg, _prediv, \ 292 _prediv_sel, _prediv_fixed, _div, _sel, _flags) \ 293 [_id] = { \ 294 .type = SUNXI_CCU_PREDIV, \ 295 .base.name = (_name), \ 296 .u.prediv.reg = (_reg), \ 297 .u.prediv.parents = (_parents), \ 298 .u.prediv.nparents = __arraycount(_parents), \ 299 .u.prediv.prediv = (_prediv), \ 300 .u.prediv.prediv_sel = (_prediv_sel), \ 301 .u.prediv.prediv_fixed = (_prediv_fixed), \ 302 .u.prediv.div = (_div), \ 303 .u.prediv.sel = (_sel), \ 304 .u.prediv.flags = (_flags), \ 305 .get_rate = sunxi_ccu_prediv_get_rate, \ 306 .set_rate = sunxi_ccu_prediv_set_rate, \ 307 .set_parent = sunxi_ccu_prediv_set_parent, \ 308 .get_parent = sunxi_ccu_prediv_get_parent, \ 309 } 310 311 struct sunxi_ccu_phase { 312 bus_size_t reg; 313 const char *parent; 314 uint32_t mask; 315 }; 316 317 u_int sunxi_ccu_phase_get_rate(struct sunxi_ccu_softc *, 318 struct sunxi_ccu_clk *); 319 int sunxi_ccu_phase_set_rate(struct sunxi_ccu_softc *, 320 struct sunxi_ccu_clk *, u_int); 321 const char *sunxi_ccu_phase_get_parent(struct sunxi_ccu_softc *, 322 struct sunxi_ccu_clk *); 323 324 #define SUNXI_CCU_PHASE(_id, _name, _parent, _reg, _mask) \ 325 [_id] = { \ 326 .type = SUNXI_CCU_PHASE, \ 327 .base.name = (_name), \ 328 .u.phase.reg = (_reg), \ 329 .u.phase.parent = (_parent), \ 330 .u.phase.mask = (_mask), \ 331 .get_rate = sunxi_ccu_phase_get_rate, \ 332 .set_rate = sunxi_ccu_phase_set_rate, \ 333 .get_parent = sunxi_ccu_phase_get_parent, \ 334 } 335 336 struct sunxi_ccu_fixed_factor { 337 const char *parent; 338 u_int div; 339 u_int mult; 340 }; 341 342 u_int sunxi_ccu_fixed_factor_get_rate(struct sunxi_ccu_softc *, 343 struct sunxi_ccu_clk *); 344 const char *sunxi_ccu_fixed_factor_get_parent(struct sunxi_ccu_softc *, 345 struct sunxi_ccu_clk *); 346 347 #define SUNXI_CCU_FIXED_FACTOR(_id, _name, _parent, _div, _mult) \ 348 [_id] = { \ 349 .type = SUNXI_CCU_FIXED_FACTOR, \ 350 .base.name = (_name), \ 351 .u.fixed_factor.parent = (_parent), \ 352 .u.fixed_factor.div = (_div), \ 353 .u.fixed_factor.mult = (_mult), \ 354 .get_rate = sunxi_ccu_fixed_factor_get_rate, \ 355 .get_parent = sunxi_ccu_fixed_factor_get_parent, \ 356 } 357 358 struct sunxi_ccu_fractional { 359 bus_size_t reg; 360 const char *parent; 361 uint32_t m; 362 uint32_t m_min; 363 uint32_t m_max; 364 uint32_t div_en; 365 uint32_t frac_sel; 366 uint32_t frac[2]; 367 uint32_t prediv; 368 uint32_t enable; 369 }; 370 371 int sunxi_ccu_fractional_enable(struct sunxi_ccu_softc *, 372 struct sunxi_ccu_clk *, int); 373 u_int sunxi_ccu_fractional_get_rate(struct sunxi_ccu_softc *, 374 struct sunxi_ccu_clk *); 375 int sunxi_ccu_fractional_set_rate(struct sunxi_ccu_softc *, 376 struct sunxi_ccu_clk *, u_int); 377 u_int sunxi_ccu_fractional_round_rate(struct sunxi_ccu_softc *, 378 struct sunxi_ccu_clk *, u_int); 379 const char *sunxi_ccu_fractional_get_parent(struct sunxi_ccu_softc *, 380 struct sunxi_ccu_clk *); 381 382 #define SUNXI_CCU_FRACTIONAL(_id, _name, _parent, _reg, _m, _m_min, _m_max, \ 383 _div_en, _frac_sel, _frac0, _frac1, _prediv, _enable) \ 384 [_id] = { \ 385 .type = SUNXI_CCU_FRACTIONAL, \ 386 .base.name = (_name), \ 387 .u.fractional.reg = (_reg), \ 388 .u.fractional.parent = (_parent), \ 389 .u.fractional.m = (_m), \ 390 .u.fractional.m_min = (_m_min), \ 391 .u.fractional.m_max = (_m_max), \ 392 .u.fractional.prediv = (_prediv), \ 393 .u.fractional.div_en = (_div_en), \ 394 .u.fractional.frac_sel = (_frac_sel), \ 395 .u.fractional.frac[0] = (_frac0), \ 396 .u.fractional.frac[1] = (_frac1), \ 397 .u.fractional.enable = (_enable), \ 398 .enable = sunxi_ccu_fractional_enable, \ 399 .get_rate = sunxi_ccu_fractional_get_rate, \ 400 .set_rate = sunxi_ccu_fractional_set_rate, \ 401 .round_rate = sunxi_ccu_fractional_round_rate, \ 402 .get_parent = sunxi_ccu_fractional_get_parent, \ 403 } 404 405 struct sunxi_ccu_clk { 406 struct clk base; 407 enum sunxi_ccu_clktype type; 408 union { 409 struct sunxi_ccu_gate gate; 410 struct sunxi_ccu_nm nm; 411 struct sunxi_ccu_nkmp nkmp; 412 struct sunxi_ccu_prediv prediv; 413 struct sunxi_ccu_div div; 414 struct sunxi_ccu_phase phase; 415 struct sunxi_ccu_fixed_factor fixed_factor; 416 struct sunxi_ccu_fractional fractional; 417 } u; 418 419 int (*enable)(struct sunxi_ccu_softc *, 420 struct sunxi_ccu_clk *, int); 421 u_int (*get_rate)(struct sunxi_ccu_softc *, 422 struct sunxi_ccu_clk *); 423 int (*set_rate)(struct sunxi_ccu_softc *, 424 struct sunxi_ccu_clk *, u_int); 425 u_int (*round_rate)(struct sunxi_ccu_softc *, 426 struct sunxi_ccu_clk *, u_int); 427 const char * (*get_parent)(struct sunxi_ccu_softc *, 428 struct sunxi_ccu_clk *); 429 int (*set_parent)(struct sunxi_ccu_softc *, 430 struct sunxi_ccu_clk *, 431 const char *); 432 }; 433 434 struct sunxi_ccu_softc { 435 device_t sc_dev; 436 int sc_phandle; 437 bus_space_tag_t sc_bst; 438 bus_space_handle_t sc_bsh; 439 440 struct clk_domain sc_clkdom; 441 442 struct sunxi_ccu_reset *sc_resets; 443 u_int sc_nresets; 444 445 struct sunxi_ccu_clk *sc_clks; 446 u_int sc_nclks; 447 }; 448 449 int sunxi_ccu_attach(struct sunxi_ccu_softc *); 450 struct sunxi_ccu_clk *sunxi_ccu_clock_find(struct sunxi_ccu_softc *, 451 const char *); 452 void sunxi_ccu_print(struct sunxi_ccu_softc *); 453 454 #define CCU_READ(sc, reg) \ 455 bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) 456 #define CCU_WRITE(sc, reg, val) \ 457 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) 458 459 #endif /* _ARM_SUNXI_CCU_H */ 460