1 /* 2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #ifndef __TEGRA_CLK_H 18 #define __TEGRA_CLK_H 19 20 #include <linux/clk-provider.h> 21 #include <linux/clkdev.h> 22 23 /** 24 * struct tegra_clk_sync_source - external clock source from codec 25 * 26 * @hw: handle between common and hardware-specific interfaces 27 * @rate: input frequency from source 28 * @max_rate: max rate allowed 29 */ 30 struct tegra_clk_sync_source { 31 struct clk_hw hw; 32 unsigned long rate; 33 unsigned long max_rate; 34 }; 35 36 #define to_clk_sync_source(_hw) \ 37 container_of(_hw, struct tegra_clk_sync_source, hw) 38 39 extern const struct clk_ops tegra_clk_sync_source_ops; 40 extern int *periph_clk_enb_refcnt; 41 42 struct clk *tegra_clk_register_sync_source(const char *name, 43 unsigned long fixed_rate, unsigned long max_rate); 44 45 /** 46 * struct tegra_clk_frac_div - fractional divider clock 47 * 48 * @hw: handle between common and hardware-specific interfaces 49 * @reg: register containing divider 50 * @flags: hardware-specific flags 51 * @shift: shift to the divider bit field 52 * @width: width of the divider bit field 53 * @frac_width: width of the fractional bit field 54 * @lock: register lock 55 * 56 * Flags: 57 * TEGRA_DIVIDER_ROUND_UP - This flags indicates to round up the divider value. 58 * TEGRA_DIVIDER_FIXED - Fixed rate PLL dividers has addition override bit, this 59 * flag indicates that this divider is for fixed rate PLL. 60 * TEGRA_DIVIDER_INT - Some modules can not cope with the duty cycle when 61 * fraction bit is set. This flags indicates to calculate divider for which 62 * fracton bit will be zero. 63 * TEGRA_DIVIDER_UART - UART module divider has additional enable bit which is 64 * set when divider value is not 0. This flags indicates that the divider 65 * is for UART module. 66 */ 67 struct tegra_clk_frac_div { 68 struct clk_hw hw; 69 void __iomem *reg; 70 u8 flags; 71 u8 shift; 72 u8 width; 73 u8 frac_width; 74 spinlock_t *lock; 75 }; 76 77 #define to_clk_frac_div(_hw) container_of(_hw, struct tegra_clk_frac_div, hw) 78 79 #define TEGRA_DIVIDER_ROUND_UP BIT(0) 80 #define TEGRA_DIVIDER_FIXED BIT(1) 81 #define TEGRA_DIVIDER_INT BIT(2) 82 #define TEGRA_DIVIDER_UART BIT(3) 83 84 extern const struct clk_ops tegra_clk_frac_div_ops; 85 struct clk *tegra_clk_register_divider(const char *name, 86 const char *parent_name, void __iomem *reg, 87 unsigned long flags, u8 clk_divider_flags, u8 shift, u8 width, 88 u8 frac_width, spinlock_t *lock); 89 struct clk *tegra_clk_register_mc(const char *name, const char *parent_name, 90 void __iomem *reg, spinlock_t *lock); 91 92 /* 93 * Tegra PLL: 94 * 95 * In general, there are 3 requirements for each PLL 96 * that SW needs to be comply with. 97 * (1) Input frequency range (REF). 98 * (2) Comparison frequency range (CF). CF = REF/DIVM. 99 * (3) VCO frequency range (VCO). VCO = CF * DIVN. 100 * 101 * The final PLL output frequency (FO) = VCO >> DIVP. 102 */ 103 104 /** 105 * struct tegra_clk_pll_freq_table - PLL frequecy table 106 * 107 * @input_rate: input rate from source 108 * @output_rate: output rate from PLL for the input rate 109 * @n: feedback divider 110 * @m: input divider 111 * @p: post divider 112 * @cpcon: charge pump current 113 * @sdm_data: fraction divider setting (0 = disabled) 114 */ 115 struct tegra_clk_pll_freq_table { 116 unsigned long input_rate; 117 unsigned long output_rate; 118 u32 n; 119 u32 m; 120 u8 p; 121 u8 cpcon; 122 u16 sdm_data; 123 }; 124 125 /** 126 * struct pdiv_map - map post divider to hw value 127 * 128 * @pdiv: post divider 129 * @hw_val: value to be written to the PLL hw 130 */ 131 struct pdiv_map { 132 u8 pdiv; 133 u8 hw_val; 134 }; 135 136 /** 137 * struct div_nmp - offset and width of m,n and p fields 138 * 139 * @divn_shift: shift to the feedback divider bit field 140 * @divn_width: width of the feedback divider bit field 141 * @divm_shift: shift to the input divider bit field 142 * @divm_width: width of the input divider bit field 143 * @divp_shift: shift to the post divider bit field 144 * @divp_width: width of the post divider bit field 145 * @override_divn_shift: shift to the feedback divider bitfield in override reg 146 * @override_divm_shift: shift to the input divider bitfield in override reg 147 * @override_divp_shift: shift to the post divider bitfield in override reg 148 */ 149 struct div_nmp { 150 u8 divn_shift; 151 u8 divn_width; 152 u8 divm_shift; 153 u8 divm_width; 154 u8 divp_shift; 155 u8 divp_width; 156 u8 override_divn_shift; 157 u8 override_divm_shift; 158 u8 override_divp_shift; 159 }; 160 161 #define MAX_PLL_MISC_REG_COUNT 6 162 163 struct tegra_clk_pll; 164 165 /** 166 * struct tegra_clk_pll_params - PLL parameters 167 * 168 * @input_min: Minimum input frequency 169 * @input_max: Maximum input frequency 170 * @cf_min: Minimum comparison frequency 171 * @cf_max: Maximum comparison frequency 172 * @vco_min: Minimum VCO frequency 173 * @vco_max: Maximum VCO frequency 174 * @base_reg: PLL base reg offset 175 * @misc_reg: PLL misc reg offset 176 * @lock_reg: PLL lock reg offset 177 * @lock_mask: Bitmask for PLL lock status 178 * @lock_enable_bit_idx: Bit index to enable PLL lock 179 * @iddq_reg: PLL IDDQ register offset 180 * @iddq_bit_idx: Bit index to enable PLL IDDQ 181 * @reset_reg: Register offset of where RESET bit is 182 * @reset_bit_idx: Shift of reset bit in reset_reg 183 * @sdm_din_reg: Register offset where SDM settings are 184 * @sdm_din_mask: Mask of SDM divider bits 185 * @sdm_ctrl_reg: Register offset where SDM enable is 186 * @sdm_ctrl_en_mask: Mask of SDM enable bit 187 * @ssc_ctrl_reg: Register offset where SSC settings are 188 * @ssc_ctrl_en_mask: Mask of SSC enable bit 189 * @aux_reg: AUX register offset 190 * @dyn_ramp_reg: Dynamic ramp control register offset 191 * @ext_misc_reg: Miscellaneous control register offsets 192 * @pmc_divnm_reg: n, m divider PMC override register offset (PLLM) 193 * @pmc_divp_reg: p divider PMC override register offset (PLLM) 194 * @flags: PLL flags 195 * @stepa_shift: Dynamic ramp step A field shift 196 * @stepb_shift: Dynamic ramp step B field shift 197 * @lock_delay: Delay in us if PLL lock is not used 198 * @max_p: maximum value for the p divider 199 * @defaults_set: Boolean signaling all reg defaults for PLL set. 200 * @pdiv_tohw: mapping of p divider to register values 201 * @div_nmp: offsets and widths on n, m and p fields 202 * @freq_table: array of frequencies supported by PLL 203 * @fixed_rate: PLL rate if it is fixed 204 * @mdiv_default: Default value for fixed mdiv for this PLL 205 * @round_p_to_pdiv: Callback used to round p to the closed pdiv 206 * @set_gain: Callback to adjust N div for SDM enabled 207 * PLL's based on fractional divider value. 208 * @calc_rate: Callback used to change how out of table 209 * rates (dividers and multipler) are calculated. 210 * @adjust_vco: Callback to adjust the programming range of the 211 * divider range (if SDM is present) 212 * @set_defaults: Callback which will try to initialize PLL 213 * registers to sane default values. This is first 214 * tried during PLL registration, but if the PLL 215 * is already enabled, it will be done the first 216 * time the rate is changed while the PLL is 217 * disabled. 218 * @dyn_ramp: Callback which can be used to define a custom 219 * dynamic ramp function for a given PLL. 220 * 221 * Flags: 222 * TEGRA_PLL_USE_LOCK - This flag indicated to use lock bits for 223 * PLL locking. If not set it will use lock_delay value to wait. 224 * TEGRA_PLL_HAS_CPCON - This flag indicates that CPCON value needs 225 * to be programmed to change output frequency of the PLL. 226 * TEGRA_PLL_SET_LFCON - This flag indicates that LFCON value needs 227 * to be programmed to change output frequency of the PLL. 228 * TEGRA_PLL_SET_DCCON - This flag indicates that DCCON value needs 229 * to be programmed to change output frequency of the PLL. 230 * TEGRA_PLLU - PLLU has inverted post divider. This flags indicated 231 * that it is PLLU and invert post divider value. 232 * TEGRA_PLLM - PLLM has additional override settings in PMC. This 233 * flag indicates that it is PLLM and use override settings. 234 * TEGRA_PLL_FIXED - We are not supposed to change output frequency 235 * of some plls. 236 * TEGRA_PLLE_CONFIGURE - Configure PLLE when enabling. 237 * TEGRA_PLL_LOCK_MISC - Lock bit is in the misc register instead of the 238 * base register. 239 * TEGRA_PLL_BYPASS - PLL has bypass bit 240 * TEGRA_PLL_HAS_LOCK_ENABLE - PLL has bit to enable lock monitoring 241 * TEGRA_MDIV_NEW - Switch to new method for calculating fixed mdiv 242 * it may be more accurate (especially if SDM present) 243 * TEGRA_PLLMB - PLLMB has should be treated similar to PLLM. This 244 * flag indicated that it is PLLMB. 245 * TEGRA_PLL_VCO_OUT - Used to indicate that the PLL has a VCO output 246 */ 247 struct tegra_clk_pll_params { 248 unsigned long input_min; 249 unsigned long input_max; 250 unsigned long cf_min; 251 unsigned long cf_max; 252 unsigned long vco_min; 253 unsigned long vco_max; 254 255 u32 base_reg; 256 u32 misc_reg; 257 u32 lock_reg; 258 u32 lock_mask; 259 u32 lock_enable_bit_idx; 260 u32 iddq_reg; 261 u32 iddq_bit_idx; 262 u32 reset_reg; 263 u32 reset_bit_idx; 264 u32 sdm_din_reg; 265 u32 sdm_din_mask; 266 u32 sdm_ctrl_reg; 267 u32 sdm_ctrl_en_mask; 268 u32 ssc_ctrl_reg; 269 u32 ssc_ctrl_en_mask; 270 u32 aux_reg; 271 u32 dyn_ramp_reg; 272 u32 ext_misc_reg[MAX_PLL_MISC_REG_COUNT]; 273 u32 pmc_divnm_reg; 274 u32 pmc_divp_reg; 275 u32 flags; 276 int stepa_shift; 277 int stepb_shift; 278 int lock_delay; 279 int max_p; 280 bool defaults_set; 281 const struct pdiv_map *pdiv_tohw; 282 struct div_nmp *div_nmp; 283 struct tegra_clk_pll_freq_table *freq_table; 284 unsigned long fixed_rate; 285 u16 mdiv_default; 286 u32 (*round_p_to_pdiv)(u32 p, u32 *pdiv); 287 void (*set_gain)(struct tegra_clk_pll_freq_table *cfg); 288 int (*calc_rate)(struct clk_hw *hw, 289 struct tegra_clk_pll_freq_table *cfg, 290 unsigned long rate, unsigned long parent_rate); 291 unsigned long (*adjust_vco)(struct tegra_clk_pll_params *pll_params, 292 unsigned long parent_rate); 293 void (*set_defaults)(struct tegra_clk_pll *pll); 294 int (*dyn_ramp)(struct tegra_clk_pll *pll, 295 struct tegra_clk_pll_freq_table *cfg); 296 }; 297 298 #define TEGRA_PLL_USE_LOCK BIT(0) 299 #define TEGRA_PLL_HAS_CPCON BIT(1) 300 #define TEGRA_PLL_SET_LFCON BIT(2) 301 #define TEGRA_PLL_SET_DCCON BIT(3) 302 #define TEGRA_PLLU BIT(4) 303 #define TEGRA_PLLM BIT(5) 304 #define TEGRA_PLL_FIXED BIT(6) 305 #define TEGRA_PLLE_CONFIGURE BIT(7) 306 #define TEGRA_PLL_LOCK_MISC BIT(8) 307 #define TEGRA_PLL_BYPASS BIT(9) 308 #define TEGRA_PLL_HAS_LOCK_ENABLE BIT(10) 309 #define TEGRA_MDIV_NEW BIT(11) 310 #define TEGRA_PLLMB BIT(12) 311 #define TEGRA_PLL_VCO_OUT BIT(13) 312 313 /** 314 * struct tegra_clk_pll - Tegra PLL clock 315 * 316 * @hw: handle between common and hardware-specifix interfaces 317 * @clk_base: address of CAR controller 318 * @pmc: address of PMC, required to read override bits 319 * @lock: register lock 320 * @params: PLL parameters 321 */ 322 struct tegra_clk_pll { 323 struct clk_hw hw; 324 void __iomem *clk_base; 325 void __iomem *pmc; 326 spinlock_t *lock; 327 struct tegra_clk_pll_params *params; 328 }; 329 330 #define to_clk_pll(_hw) container_of(_hw, struct tegra_clk_pll, hw) 331 332 /** 333 * struct tegra_audio_clk_info - Tegra Audio Clk Information 334 * 335 * @name: name for the audio pll 336 * @pll_params: pll_params for audio pll 337 * @clk_id: clk_ids for the audio pll 338 * @parent: name of the parent of the audio pll 339 */ 340 struct tegra_audio_clk_info { 341 char *name; 342 struct tegra_clk_pll_params *pll_params; 343 int clk_id; 344 char *parent; 345 }; 346 347 extern const struct clk_ops tegra_clk_pll_ops; 348 extern const struct clk_ops tegra_clk_plle_ops; 349 struct clk *tegra_clk_register_pll(const char *name, const char *parent_name, 350 void __iomem *clk_base, void __iomem *pmc, 351 unsigned long flags, struct tegra_clk_pll_params *pll_params, 352 spinlock_t *lock); 353 354 struct clk *tegra_clk_register_plle(const char *name, const char *parent_name, 355 void __iomem *clk_base, void __iomem *pmc, 356 unsigned long flags, struct tegra_clk_pll_params *pll_params, 357 spinlock_t *lock); 358 359 struct clk *tegra_clk_register_pllxc(const char *name, const char *parent_name, 360 void __iomem *clk_base, void __iomem *pmc, 361 unsigned long flags, 362 struct tegra_clk_pll_params *pll_params, 363 spinlock_t *lock); 364 365 struct clk *tegra_clk_register_pllm(const char *name, const char *parent_name, 366 void __iomem *clk_base, void __iomem *pmc, 367 unsigned long flags, 368 struct tegra_clk_pll_params *pll_params, 369 spinlock_t *lock); 370 371 struct clk *tegra_clk_register_pllc(const char *name, const char *parent_name, 372 void __iomem *clk_base, void __iomem *pmc, 373 unsigned long flags, 374 struct tegra_clk_pll_params *pll_params, 375 spinlock_t *lock); 376 377 struct clk *tegra_clk_register_pllre(const char *name, const char *parent_name, 378 void __iomem *clk_base, void __iomem *pmc, 379 unsigned long flags, 380 struct tegra_clk_pll_params *pll_params, 381 spinlock_t *lock, unsigned long parent_rate); 382 383 struct clk *tegra_clk_register_pllre_tegra210(const char *name, 384 const char *parent_name, void __iomem *clk_base, 385 void __iomem *pmc, unsigned long flags, 386 struct tegra_clk_pll_params *pll_params, 387 spinlock_t *lock, unsigned long parent_rate); 388 389 struct clk *tegra_clk_register_plle_tegra114(const char *name, 390 const char *parent_name, 391 void __iomem *clk_base, unsigned long flags, 392 struct tegra_clk_pll_params *pll_params, 393 spinlock_t *lock); 394 395 struct clk *tegra_clk_register_plle_tegra210(const char *name, 396 const char *parent_name, 397 void __iomem *clk_base, unsigned long flags, 398 struct tegra_clk_pll_params *pll_params, 399 spinlock_t *lock); 400 401 struct clk *tegra_clk_register_pllc_tegra210(const char *name, 402 const char *parent_name, void __iomem *clk_base, 403 void __iomem *pmc, unsigned long flags, 404 struct tegra_clk_pll_params *pll_params, 405 spinlock_t *lock); 406 407 struct clk *tegra_clk_register_pllss_tegra210(const char *name, 408 const char *parent_name, void __iomem *clk_base, 409 unsigned long flags, 410 struct tegra_clk_pll_params *pll_params, 411 spinlock_t *lock); 412 413 struct clk *tegra_clk_register_pllss(const char *name, const char *parent_name, 414 void __iomem *clk_base, unsigned long flags, 415 struct tegra_clk_pll_params *pll_params, 416 spinlock_t *lock); 417 418 struct clk *tegra_clk_register_pllmb(const char *name, const char *parent_name, 419 void __iomem *clk_base, void __iomem *pmc, 420 unsigned long flags, 421 struct tegra_clk_pll_params *pll_params, 422 spinlock_t *lock); 423 424 struct clk *tegra_clk_register_pllu(const char *name, const char *parent_name, 425 void __iomem *clk_base, unsigned long flags, 426 struct tegra_clk_pll_params *pll_params, 427 spinlock_t *lock); 428 429 struct clk *tegra_clk_register_pllu_tegra114(const char *name, 430 const char *parent_name, 431 void __iomem *clk_base, unsigned long flags, 432 struct tegra_clk_pll_params *pll_params, 433 spinlock_t *lock); 434 435 struct clk *tegra_clk_register_pllu_tegra210(const char *name, 436 const char *parent_name, 437 void __iomem *clk_base, unsigned long flags, 438 struct tegra_clk_pll_params *pll_params, 439 spinlock_t *lock); 440 441 /** 442 * struct tegra_clk_pll_out - PLL divider down clock 443 * 444 * @hw: handle between common and hardware-specific interfaces 445 * @reg: register containing the PLL divider 446 * @enb_bit_idx: bit to enable/disable PLL divider 447 * @rst_bit_idx: bit to reset PLL divider 448 * @lock: register lock 449 * @flags: hardware-specific flags 450 */ 451 struct tegra_clk_pll_out { 452 struct clk_hw hw; 453 void __iomem *reg; 454 u8 enb_bit_idx; 455 u8 rst_bit_idx; 456 spinlock_t *lock; 457 u8 flags; 458 }; 459 460 #define to_clk_pll_out(_hw) container_of(_hw, struct tegra_clk_pll_out, hw) 461 462 extern const struct clk_ops tegra_clk_pll_out_ops; 463 struct clk *tegra_clk_register_pll_out(const char *name, 464 const char *parent_name, void __iomem *reg, u8 enb_bit_idx, 465 u8 rst_bit_idx, unsigned long flags, u8 pll_div_flags, 466 spinlock_t *lock); 467 468 /** 469 * struct tegra_clk_periph_regs - Registers controlling peripheral clock 470 * 471 * @enb_reg: read the enable status 472 * @enb_set_reg: write 1 to enable clock 473 * @enb_clr_reg: write 1 to disable clock 474 * @rst_reg: read the reset status 475 * @rst_set_reg: write 1 to assert the reset of peripheral 476 * @rst_clr_reg: write 1 to deassert the reset of peripheral 477 */ 478 struct tegra_clk_periph_regs { 479 u32 enb_reg; 480 u32 enb_set_reg; 481 u32 enb_clr_reg; 482 u32 rst_reg; 483 u32 rst_set_reg; 484 u32 rst_clr_reg; 485 }; 486 487 /** 488 * struct tegra_clk_periph_gate - peripheral gate clock 489 * 490 * @magic: magic number to validate type 491 * @hw: handle between common and hardware-specific interfaces 492 * @clk_base: address of CAR controller 493 * @regs: Registers to control the peripheral 494 * @flags: hardware-specific flags 495 * @clk_num: Clock number 496 * @enable_refcnt: array to maintain reference count of the clock 497 * 498 * Flags: 499 * TEGRA_PERIPH_NO_RESET - This flag indicates that reset is not allowed 500 * for this module. 501 * TEGRA_PERIPH_MANUAL_RESET - This flag indicates not to reset module 502 * after clock enable and driver for the module is responsible for 503 * doing reset. 504 * TEGRA_PERIPH_ON_APB - If peripheral is in the APB bus then read the 505 * bus to flush the write operation in apb bus. This flag indicates 506 * that this peripheral is in apb bus. 507 * TEGRA_PERIPH_WAR_1005168 - Apply workaround for Tegra114 MSENC bug 508 */ 509 struct tegra_clk_periph_gate { 510 u32 magic; 511 struct clk_hw hw; 512 void __iomem *clk_base; 513 u8 flags; 514 int clk_num; 515 int *enable_refcnt; 516 const struct tegra_clk_periph_regs *regs; 517 }; 518 519 #define to_clk_periph_gate(_hw) \ 520 container_of(_hw, struct tegra_clk_periph_gate, hw) 521 522 #define TEGRA_CLK_PERIPH_GATE_MAGIC 0x17760309 523 524 #define TEGRA_PERIPH_NO_RESET BIT(0) 525 #define TEGRA_PERIPH_MANUAL_RESET BIT(1) 526 #define TEGRA_PERIPH_ON_APB BIT(2) 527 #define TEGRA_PERIPH_WAR_1005168 BIT(3) 528 #define TEGRA_PERIPH_NO_DIV BIT(4) 529 #define TEGRA_PERIPH_NO_GATE BIT(5) 530 531 extern const struct clk_ops tegra_clk_periph_gate_ops; 532 struct clk *tegra_clk_register_periph_gate(const char *name, 533 const char *parent_name, u8 gate_flags, void __iomem *clk_base, 534 unsigned long flags, int clk_num, int *enable_refcnt); 535 536 struct tegra_clk_periph_fixed { 537 struct clk_hw hw; 538 void __iomem *base; 539 const struct tegra_clk_periph_regs *regs; 540 unsigned int mul; 541 unsigned int div; 542 unsigned int num; 543 }; 544 545 struct clk *tegra_clk_register_periph_fixed(const char *name, 546 const char *parent, 547 unsigned long flags, 548 void __iomem *base, 549 unsigned int mul, 550 unsigned int div, 551 unsigned int num); 552 553 /** 554 * struct clk-periph - peripheral clock 555 * 556 * @magic: magic number to validate type 557 * @hw: handle between common and hardware-specific interfaces 558 * @mux: mux clock 559 * @divider: divider clock 560 * @gate: gate clock 561 * @mux_ops: mux clock ops 562 * @div_ops: divider clock ops 563 * @gate_ops: gate clock ops 564 */ 565 struct tegra_clk_periph { 566 u32 magic; 567 struct clk_hw hw; 568 struct clk_mux mux; 569 struct tegra_clk_frac_div divider; 570 struct tegra_clk_periph_gate gate; 571 572 const struct clk_ops *mux_ops; 573 const struct clk_ops *div_ops; 574 const struct clk_ops *gate_ops; 575 }; 576 577 #define to_clk_periph(_hw) container_of(_hw, struct tegra_clk_periph, hw) 578 579 #define TEGRA_CLK_PERIPH_MAGIC 0x18221223 580 581 extern const struct clk_ops tegra_clk_periph_ops; 582 struct clk *tegra_clk_register_periph(const char *name, 583 const char * const *parent_names, int num_parents, 584 struct tegra_clk_periph *periph, void __iomem *clk_base, 585 u32 offset, unsigned long flags); 586 struct clk *tegra_clk_register_periph_nodiv(const char *name, 587 const char * const *parent_names, int num_parents, 588 struct tegra_clk_periph *periph, void __iomem *clk_base, 589 u32 offset); 590 591 #define TEGRA_CLK_PERIPH(_mux_shift, _mux_mask, _mux_flags, \ 592 _div_shift, _div_width, _div_frac_width, \ 593 _div_flags, _clk_num,\ 594 _gate_flags, _table, _lock) \ 595 { \ 596 .mux = { \ 597 .flags = _mux_flags, \ 598 .shift = _mux_shift, \ 599 .mask = _mux_mask, \ 600 .table = _table, \ 601 .lock = _lock, \ 602 }, \ 603 .divider = { \ 604 .flags = _div_flags, \ 605 .shift = _div_shift, \ 606 .width = _div_width, \ 607 .frac_width = _div_frac_width, \ 608 .lock = _lock, \ 609 }, \ 610 .gate = { \ 611 .flags = _gate_flags, \ 612 .clk_num = _clk_num, \ 613 }, \ 614 .mux_ops = &clk_mux_ops, \ 615 .div_ops = &tegra_clk_frac_div_ops, \ 616 .gate_ops = &tegra_clk_periph_gate_ops, \ 617 } 618 619 struct tegra_periph_init_data { 620 const char *name; 621 int clk_id; 622 union { 623 const char *const *parent_names; 624 const char *parent_name; 625 } p; 626 int num_parents; 627 struct tegra_clk_periph periph; 628 u32 offset; 629 const char *con_id; 630 const char *dev_id; 631 unsigned long flags; 632 }; 633 634 #define TEGRA_INIT_DATA_TABLE(_name, _con_id, _dev_id, _parent_names, _offset,\ 635 _mux_shift, _mux_mask, _mux_flags, _div_shift, \ 636 _div_width, _div_frac_width, _div_flags, \ 637 _clk_num, _gate_flags, _clk_id, _table, \ 638 _flags, _lock) \ 639 { \ 640 .name = _name, \ 641 .clk_id = _clk_id, \ 642 .p.parent_names = _parent_names, \ 643 .num_parents = ARRAY_SIZE(_parent_names), \ 644 .periph = TEGRA_CLK_PERIPH(_mux_shift, _mux_mask, \ 645 _mux_flags, _div_shift, \ 646 _div_width, _div_frac_width, \ 647 _div_flags, _clk_num, \ 648 _gate_flags, _table, _lock), \ 649 .offset = _offset, \ 650 .con_id = _con_id, \ 651 .dev_id = _dev_id, \ 652 .flags = _flags \ 653 } 654 655 #define TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parent_names, _offset,\ 656 _mux_shift, _mux_width, _mux_flags, _div_shift, \ 657 _div_width, _div_frac_width, _div_flags, \ 658 _clk_num, _gate_flags, _clk_id) \ 659 TEGRA_INIT_DATA_TABLE(_name, _con_id, _dev_id, _parent_names, _offset,\ 660 _mux_shift, BIT(_mux_width) - 1, _mux_flags, \ 661 _div_shift, _div_width, _div_frac_width, _div_flags, \ 662 _clk_num, _gate_flags, _clk_id,\ 663 NULL, 0, NULL) 664 665 struct clk *tegra_clk_register_periph_data(void __iomem *clk_base, 666 struct tegra_periph_init_data *init); 667 668 /** 669 * struct clk_super_mux - super clock 670 * 671 * @hw: handle between common and hardware-specific interfaces 672 * @reg: register controlling multiplexer 673 * @width: width of the multiplexer bit field 674 * @flags: hardware-specific flags 675 * @div2_index: bit controlling divide-by-2 676 * @pllx_index: PLLX index in the parent list 677 * @lock: register lock 678 * 679 * Flags: 680 * TEGRA_DIVIDER_2 - LP cluster has additional divider. This flag indicates 681 * that this is LP cluster clock. 682 */ 683 struct tegra_clk_super_mux { 684 struct clk_hw hw; 685 void __iomem *reg; 686 struct tegra_clk_frac_div frac_div; 687 const struct clk_ops *div_ops; 688 u8 width; 689 u8 flags; 690 u8 div2_index; 691 u8 pllx_index; 692 spinlock_t *lock; 693 }; 694 695 #define to_clk_super_mux(_hw) container_of(_hw, struct tegra_clk_super_mux, hw) 696 697 #define TEGRA_DIVIDER_2 BIT(0) 698 699 extern const struct clk_ops tegra_clk_super_ops; 700 struct clk *tegra_clk_register_super_mux(const char *name, 701 const char **parent_names, u8 num_parents, 702 unsigned long flags, void __iomem *reg, u8 clk_super_flags, 703 u8 width, u8 pllx_index, u8 div2_index, spinlock_t *lock); 704 struct clk *tegra_clk_register_super_clk(const char *name, 705 const char * const *parent_names, u8 num_parents, 706 unsigned long flags, void __iomem *reg, u8 clk_super_flags, 707 spinlock_t *lock); 708 /** 709 * struct clk_init_table - clock initialization table 710 * @clk_id: clock id as mentioned in device tree bindings 711 * @parent_id: parent clock id as mentioned in device tree bindings 712 * @rate: rate to set 713 * @state: enable/disable 714 */ 715 struct tegra_clk_init_table { 716 unsigned int clk_id; 717 unsigned int parent_id; 718 unsigned long rate; 719 int state; 720 }; 721 722 /** 723 * struct clk_duplicate - duplicate clocks 724 * @clk_id: clock id as mentioned in device tree bindings 725 * @lookup: duplicate lookup entry for the clock 726 */ 727 struct tegra_clk_duplicate { 728 int clk_id; 729 struct clk_lookup lookup; 730 }; 731 732 #define TEGRA_CLK_DUPLICATE(_clk_id, _dev, _con) \ 733 { \ 734 .clk_id = _clk_id, \ 735 .lookup = { \ 736 .dev_id = _dev, \ 737 .con_id = _con, \ 738 }, \ 739 } 740 741 struct tegra_clk { 742 int dt_id; 743 bool present; 744 }; 745 746 struct tegra_devclk { 747 int dt_id; 748 char *dev_id; 749 char *con_id; 750 }; 751 752 void tegra_init_special_resets(unsigned int num, int (*assert)(unsigned long), 753 int (*deassert)(unsigned long)); 754 755 void tegra_init_from_table(struct tegra_clk_init_table *tbl, 756 struct clk *clks[], int clk_max); 757 758 void tegra_init_dup_clks(struct tegra_clk_duplicate *dup_list, 759 struct clk *clks[], int clk_max); 760 761 const struct tegra_clk_periph_regs *get_reg_bank(int clkid); 762 struct clk **tegra_clk_init(void __iomem *clk_base, int num, int periph_banks); 763 764 struct clk **tegra_lookup_dt_id(int clk_id, struct tegra_clk *tegra_clk); 765 766 void tegra_add_of_provider(struct device_node *np); 767 void tegra_register_devclks(struct tegra_devclk *dev_clks, int num); 768 769 void tegra_audio_clk_init(void __iomem *clk_base, 770 void __iomem *pmc_base, struct tegra_clk *tegra_clks, 771 struct tegra_audio_clk_info *audio_info, 772 unsigned int num_plls); 773 774 void tegra_periph_clk_init(void __iomem *clk_base, void __iomem *pmc_base, 775 struct tegra_clk *tegra_clks, 776 struct tegra_clk_pll_params *pll_params); 777 778 void tegra_pmc_clk_init(void __iomem *pmc_base, struct tegra_clk *tegra_clks); 779 void tegra_fixed_clk_init(struct tegra_clk *tegra_clks); 780 int tegra_osc_clk_init(void __iomem *clk_base, struct tegra_clk *clks, 781 unsigned long *input_freqs, unsigned int num, 782 unsigned int clk_m_div, unsigned long *osc_freq, 783 unsigned long *pll_ref_freq); 784 void tegra_super_clk_gen4_init(void __iomem *clk_base, 785 void __iomem *pmc_base, struct tegra_clk *tegra_clks, 786 struct tegra_clk_pll_params *pll_params); 787 void tegra_super_clk_gen5_init(void __iomem *clk_base, 788 void __iomem *pmc_base, struct tegra_clk *tegra_clks, 789 struct tegra_clk_pll_params *pll_params); 790 791 #ifdef CONFIG_TEGRA_CLK_EMC 792 struct clk *tegra_clk_register_emc(void __iomem *base, struct device_node *np, 793 spinlock_t *lock); 794 #else 795 static inline struct clk *tegra_clk_register_emc(void __iomem *base, 796 struct device_node *np, 797 spinlock_t *lock) 798 { 799 return NULL; 800 } 801 #endif 802 803 void tegra114_clock_tune_cpu_trimmers_high(void); 804 void tegra114_clock_tune_cpu_trimmers_low(void); 805 void tegra114_clock_tune_cpu_trimmers_init(void); 806 void tegra114_clock_assert_dfll_dvco_reset(void); 807 void tegra114_clock_deassert_dfll_dvco_reset(void); 808 809 typedef void (*tegra_clk_apply_init_table_func)(void); 810 extern tegra_clk_apply_init_table_func tegra_clk_apply_init_table; 811 int tegra_pll_wait_for_lock(struct tegra_clk_pll *pll); 812 u16 tegra_pll_get_fixed_mdiv(struct clk_hw *hw, unsigned long input_rate); 813 int tegra_pll_p_div_to_hw(struct tegra_clk_pll *pll, u8 p_div); 814 815 /* Combined read fence with delay */ 816 #define fence_udelay(delay, reg) \ 817 do { \ 818 readl(reg); \ 819 udelay(delay); \ 820 } while (0) 821 822 #endif /* TEGRA_CLK_H */ 823