1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Pistachio SoC pinctrl driver 4 * 5 * Copyright (C) 2014 Imagination Technologies Ltd. 6 * Copyright (C) 2014 Google, Inc. 7 */ 8 9 #include <linux/gpio/driver.h> 10 #include <linux/interrupt.h> 11 #include <linux/io.h> 12 #include <linux/irq.h> 13 #include <linux/of.h> 14 #include <linux/of_irq.h> 15 #include <linux/pinctrl/pinconf.h> 16 #include <linux/pinctrl/pinconf-generic.h> 17 #include <linux/pinctrl/pinctrl.h> 18 #include <linux/pinctrl/pinmux.h> 19 #include <linux/platform_device.h> 20 #include <linux/slab.h> 21 #include <linux/spinlock.h> 22 23 #include "pinctrl-utils.h" 24 25 #define PADS_SCHMITT_EN0 0x000 26 #define PADS_SCHMITT_EN_REG(pin) (PADS_SCHMITT_EN0 + 0x4 * ((pin) / 32)) 27 #define PADS_SCHMITT_EN_BIT(pin) BIT((pin) % 32) 28 29 #define PADS_PU_PD0 0x040 30 #define PADS_PU_PD_REG(pin) (PADS_PU_PD0 + 0x4 * ((pin) / 16)) 31 #define PADS_PU_PD_SHIFT(pin) (2 * ((pin) % 16)) 32 #define PADS_PU_PD_MASK 0x3 33 #define PADS_PU_PD_HIGHZ 0x0 34 #define PADS_PU_PD_UP 0x1 35 #define PADS_PU_PD_DOWN 0x2 36 #define PADS_PU_PD_BUS 0x3 37 38 #define PADS_FUNCTION_SELECT0 0x0c0 39 #define PADS_FUNCTION_SELECT1 0x0c4 40 #define PADS_FUNCTION_SELECT2 0x0c8 41 #define PADS_SCENARIO_SELECT 0x0f8 42 43 #define PADS_SLEW_RATE0 0x100 44 #define PADS_SLEW_RATE_REG(pin) (PADS_SLEW_RATE0 + 0x4 * ((pin) / 32)) 45 #define PADS_SLEW_RATE_BIT(pin) BIT((pin) % 32) 46 47 #define PADS_DRIVE_STRENGTH0 0x120 48 #define PADS_DRIVE_STRENGTH_REG(pin) \ 49 (PADS_DRIVE_STRENGTH0 + 0x4 * ((pin) / 16)) 50 #define PADS_DRIVE_STRENGTH_SHIFT(pin) (2 * ((pin) % 16)) 51 #define PADS_DRIVE_STRENGTH_MASK 0x3 52 #define PADS_DRIVE_STRENGTH_2MA 0x0 53 #define PADS_DRIVE_STRENGTH_4MA 0x1 54 #define PADS_DRIVE_STRENGTH_8MA 0x2 55 #define PADS_DRIVE_STRENGTH_12MA 0x3 56 57 #define GPIO_BANK_BASE(bank) (0x200 + 0x24 * (bank)) 58 59 #define GPIO_BIT_EN 0x00 60 #define GPIO_OUTPUT_EN 0x04 61 #define GPIO_OUTPUT 0x08 62 #define GPIO_INPUT 0x0c 63 #define GPIO_INPUT_POLARITY 0x10 64 #define GPIO_INTERRUPT_TYPE 0x14 65 #define GPIO_INTERRUPT_TYPE_LEVEL 0x0 66 #define GPIO_INTERRUPT_TYPE_EDGE 0x1 67 #define GPIO_INTERRUPT_EDGE 0x18 68 #define GPIO_INTERRUPT_EDGE_SINGLE 0x0 69 #define GPIO_INTERRUPT_EDGE_DUAL 0x1 70 #define GPIO_INTERRUPT_EN 0x1c 71 #define GPIO_INTERRUPT_STATUS 0x20 72 73 struct pistachio_function { 74 const char *name; 75 const char * const *groups; 76 unsigned int ngroups; 77 const int *scenarios; 78 unsigned int nscenarios; 79 unsigned int scenario_reg; 80 unsigned int scenario_shift; 81 unsigned int scenario_mask; 82 }; 83 84 struct pistachio_pin_group { 85 const char *name; 86 unsigned int pin; 87 int mux_option[3]; 88 int mux_reg; 89 int mux_shift; 90 int mux_mask; 91 }; 92 93 struct pistachio_gpio_bank { 94 struct pistachio_pinctrl *pctl; 95 void __iomem *base; 96 unsigned int pin_base; 97 unsigned int npins; 98 struct gpio_chip gpio_chip; 99 struct irq_chip irq_chip; 100 }; 101 102 struct pistachio_pinctrl { 103 struct device *dev; 104 void __iomem *base; 105 struct pinctrl_dev *pctldev; 106 const struct pinctrl_pin_desc *pins; 107 unsigned int npins; 108 const struct pistachio_function *functions; 109 unsigned int nfunctions; 110 const struct pistachio_pin_group *groups; 111 unsigned int ngroups; 112 struct pistachio_gpio_bank *gpio_banks; 113 unsigned int nbanks; 114 }; 115 116 #define PISTACHIO_PIN_MFIO(p) (p) 117 #define PISTACHIO_PIN_TCK 90 118 #define PISTACHIO_PIN_TRSTN 91 119 #define PISTACHIO_PIN_TDI 92 120 #define PISTACHIO_PIN_TMS 93 121 #define PISTACHIO_PIN_TDO 94 122 #define PISTACHIO_PIN_JTAG_COMPLY 95 123 #define PISTACHIO_PIN_SAFE_MODE 96 124 #define PISTACHIO_PIN_POR_DISABLE 97 125 #define PISTACHIO_PIN_RESETN 98 126 127 #define MFIO_PIN_DESC(p) PINCTRL_PIN(PISTACHIO_PIN_MFIO(p), "mfio" #p) 128 129 static const struct pinctrl_pin_desc pistachio_pins[] = { 130 MFIO_PIN_DESC(0), 131 MFIO_PIN_DESC(1), 132 MFIO_PIN_DESC(2), 133 MFIO_PIN_DESC(3), 134 MFIO_PIN_DESC(4), 135 MFIO_PIN_DESC(5), 136 MFIO_PIN_DESC(6), 137 MFIO_PIN_DESC(7), 138 MFIO_PIN_DESC(8), 139 MFIO_PIN_DESC(9), 140 MFIO_PIN_DESC(10), 141 MFIO_PIN_DESC(11), 142 MFIO_PIN_DESC(12), 143 MFIO_PIN_DESC(13), 144 MFIO_PIN_DESC(14), 145 MFIO_PIN_DESC(15), 146 MFIO_PIN_DESC(16), 147 MFIO_PIN_DESC(17), 148 MFIO_PIN_DESC(18), 149 MFIO_PIN_DESC(19), 150 MFIO_PIN_DESC(20), 151 MFIO_PIN_DESC(21), 152 MFIO_PIN_DESC(22), 153 MFIO_PIN_DESC(23), 154 MFIO_PIN_DESC(24), 155 MFIO_PIN_DESC(25), 156 MFIO_PIN_DESC(26), 157 MFIO_PIN_DESC(27), 158 MFIO_PIN_DESC(28), 159 MFIO_PIN_DESC(29), 160 MFIO_PIN_DESC(30), 161 MFIO_PIN_DESC(31), 162 MFIO_PIN_DESC(32), 163 MFIO_PIN_DESC(33), 164 MFIO_PIN_DESC(34), 165 MFIO_PIN_DESC(35), 166 MFIO_PIN_DESC(36), 167 MFIO_PIN_DESC(37), 168 MFIO_PIN_DESC(38), 169 MFIO_PIN_DESC(39), 170 MFIO_PIN_DESC(40), 171 MFIO_PIN_DESC(41), 172 MFIO_PIN_DESC(42), 173 MFIO_PIN_DESC(43), 174 MFIO_PIN_DESC(44), 175 MFIO_PIN_DESC(45), 176 MFIO_PIN_DESC(46), 177 MFIO_PIN_DESC(47), 178 MFIO_PIN_DESC(48), 179 MFIO_PIN_DESC(49), 180 MFIO_PIN_DESC(50), 181 MFIO_PIN_DESC(51), 182 MFIO_PIN_DESC(52), 183 MFIO_PIN_DESC(53), 184 MFIO_PIN_DESC(54), 185 MFIO_PIN_DESC(55), 186 MFIO_PIN_DESC(56), 187 MFIO_PIN_DESC(57), 188 MFIO_PIN_DESC(58), 189 MFIO_PIN_DESC(59), 190 MFIO_PIN_DESC(60), 191 MFIO_PIN_DESC(61), 192 MFIO_PIN_DESC(62), 193 MFIO_PIN_DESC(63), 194 MFIO_PIN_DESC(64), 195 MFIO_PIN_DESC(65), 196 MFIO_PIN_DESC(66), 197 MFIO_PIN_DESC(67), 198 MFIO_PIN_DESC(68), 199 MFIO_PIN_DESC(69), 200 MFIO_PIN_DESC(70), 201 MFIO_PIN_DESC(71), 202 MFIO_PIN_DESC(72), 203 MFIO_PIN_DESC(73), 204 MFIO_PIN_DESC(74), 205 MFIO_PIN_DESC(75), 206 MFIO_PIN_DESC(76), 207 MFIO_PIN_DESC(77), 208 MFIO_PIN_DESC(78), 209 MFIO_PIN_DESC(79), 210 MFIO_PIN_DESC(80), 211 MFIO_PIN_DESC(81), 212 MFIO_PIN_DESC(82), 213 MFIO_PIN_DESC(83), 214 MFIO_PIN_DESC(84), 215 MFIO_PIN_DESC(85), 216 MFIO_PIN_DESC(86), 217 MFIO_PIN_DESC(87), 218 MFIO_PIN_DESC(88), 219 MFIO_PIN_DESC(89), 220 PINCTRL_PIN(PISTACHIO_PIN_TCK, "tck"), 221 PINCTRL_PIN(PISTACHIO_PIN_TRSTN, "trstn"), 222 PINCTRL_PIN(PISTACHIO_PIN_TDI, "tdi"), 223 PINCTRL_PIN(PISTACHIO_PIN_TMS, "tms"), 224 PINCTRL_PIN(PISTACHIO_PIN_TDO, "tdo"), 225 PINCTRL_PIN(PISTACHIO_PIN_JTAG_COMPLY, "jtag_comply"), 226 PINCTRL_PIN(PISTACHIO_PIN_SAFE_MODE, "safe_mode"), 227 PINCTRL_PIN(PISTACHIO_PIN_POR_DISABLE, "por_disable"), 228 PINCTRL_PIN(PISTACHIO_PIN_RESETN, "resetn"), 229 }; 230 231 static const char * const pistachio_spim0_groups[] = { 232 "mfio1", "mfio2", "mfio8", "mfio9", "mfio10", "mfio28", "mfio29", 233 "mfio30", "mfio55", "mfio56", "mfio57", 234 }; 235 236 static const char * const pistachio_spim1_groups[] = { 237 "mfio0", "mfio1", "mfio2", "mfio3", "mfio4", "mfio5", "mfio6", 238 "mfio7", "mfio31", "mfio55", "mfio56", "mfio57", "mfio58", 239 }; 240 241 static const char * const pistachio_spis_groups[] = { 242 "mfio11", "mfio12", "mfio13", "mfio14", 243 }; 244 245 static const char *const pistachio_sdhost_groups[] = { 246 "mfio15", "mfio16", "mfio17", "mfio18", "mfio19", "mfio20", 247 "mfio21", "mfio22", "mfio23", "mfio24", "mfio25", "mfio26", 248 "mfio27", 249 }; 250 251 static const char * const pistachio_i2c0_groups[] = { 252 "mfio28", "mfio29", 253 }; 254 255 static const char * const pistachio_i2c1_groups[] = { 256 "mfio30", "mfio31", 257 }; 258 259 static const char * const pistachio_i2c2_groups[] = { 260 "mfio32", "mfio33", 261 }; 262 263 static const char * const pistachio_i2c3_groups[] = { 264 "mfio34", "mfio35", 265 }; 266 267 static const char * const pistachio_audio_clk_in_groups[] = { 268 "mfio36", 269 }; 270 271 static const char * const pistachio_i2s_out_groups[] = { 272 "mfio36", "mfio37", "mfio38", "mfio39", "mfio40", "mfio41", 273 "mfio42", "mfio43", "mfio44", 274 }; 275 276 static const char * const pistachio_debug_raw_cca_ind_groups[] = { 277 "mfio37", 278 }; 279 280 static const char * const pistachio_debug_ed_sec20_cca_ind_groups[] = { 281 "mfio38", 282 }; 283 284 static const char * const pistachio_debug_ed_sec40_cca_ind_groups[] = { 285 "mfio39", 286 }; 287 288 static const char * const pistachio_debug_agc_done_0_groups[] = { 289 "mfio40", 290 }; 291 292 static const char * const pistachio_debug_agc_done_1_groups[] = { 293 "mfio41", 294 }; 295 296 static const char * const pistachio_debug_ed_cca_ind_groups[] = { 297 "mfio42", 298 }; 299 300 static const char * const pistachio_debug_s2l_done_groups[] = { 301 "mfio43", 302 }; 303 304 static const char * const pistachio_i2s_dac_clk_groups[] = { 305 "mfio45", 306 }; 307 308 static const char * const pistachio_audio_sync_groups[] = { 309 "mfio45", 310 }; 311 312 static const char * const pistachio_audio_trigger_groups[] = { 313 "mfio46", 314 }; 315 316 static const char * const pistachio_i2s_in_groups[] = { 317 "mfio47", "mfio48", "mfio49", "mfio50", "mfio51", "mfio52", 318 "mfio53", "mfio54", 319 }; 320 321 static const char * const pistachio_uart0_groups[] = { 322 "mfio55", "mfio56", "mfio57", "mfio58", 323 }; 324 325 static const char * const pistachio_uart1_groups[] = { 326 "mfio59", "mfio60", "mfio1", "mfio2", 327 }; 328 329 static const char * const pistachio_spdif_out_groups[] = { 330 "mfio61", 331 }; 332 333 static const char * const pistachio_spdif_in_groups[] = { 334 "mfio62", "mfio54", 335 }; 336 static const int pistachio_spdif_in_scenarios[] = { 337 PISTACHIO_PIN_MFIO(62), 338 PISTACHIO_PIN_MFIO(54), 339 }; 340 341 static const char * const pistachio_eth_groups[] = { 342 "mfio63", "mfio64", "mfio65", "mfio66", "mfio67", "mfio68", 343 "mfio69", "mfio70", "mfio71", 344 }; 345 346 static const char * const pistachio_ir_groups[] = { 347 "mfio72", 348 }; 349 350 static const char * const pistachio_pwmpdm_groups[] = { 351 "mfio73", "mfio74", "mfio75", "mfio76", 352 }; 353 354 static const char * const pistachio_mips_trace_clk_groups[] = { 355 "mfio15", "mfio63", "mfio73", 356 }; 357 358 static const char * const pistachio_mips_trace_dint_groups[] = { 359 "mfio16", "mfio64", "mfio74", 360 }; 361 static const int pistachio_mips_trace_dint_scenarios[] = { 362 PISTACHIO_PIN_MFIO(16), 363 PISTACHIO_PIN_MFIO(64), 364 PISTACHIO_PIN_MFIO(74), 365 }; 366 367 static const char * const pistachio_mips_trace_trigout_groups[] = { 368 "mfio17", "mfio65", "mfio75", 369 }; 370 371 static const char * const pistachio_mips_trace_trigin_groups[] = { 372 "mfio18", "mfio66", "mfio76", 373 }; 374 static const int pistachio_mips_trace_trigin_scenarios[] = { 375 PISTACHIO_PIN_MFIO(18), 376 PISTACHIO_PIN_MFIO(66), 377 PISTACHIO_PIN_MFIO(76), 378 }; 379 380 static const char * const pistachio_mips_trace_dm_groups[] = { 381 "mfio19", "mfio67", "mfio77", 382 }; 383 384 static const char * const pistachio_mips_probe_n_groups[] = { 385 "mfio20", "mfio68", "mfio78", 386 }; 387 static const int pistachio_mips_probe_n_scenarios[] = { 388 PISTACHIO_PIN_MFIO(20), 389 PISTACHIO_PIN_MFIO(68), 390 PISTACHIO_PIN_MFIO(78), 391 }; 392 393 static const char * const pistachio_mips_trace_data_groups[] = { 394 "mfio15", "mfio16", "mfio17", "mfio18", "mfio19", "mfio20", 395 "mfio21", "mfio22", "mfio63", "mfio64", "mfio65", "mfio66", 396 "mfio67", "mfio68", "mfio69", "mfio70", "mfio79", "mfio80", 397 "mfio81", "mfio82", "mfio83", "mfio84", "mfio85", "mfio86", 398 }; 399 400 static const char * const pistachio_sram_debug_groups[] = { 401 "mfio73", "mfio74", 402 }; 403 404 static const char * const pistachio_rom_debug_groups[] = { 405 "mfio75", "mfio76", 406 }; 407 408 static const char * const pistachio_rpu_debug_groups[] = { 409 "mfio77", "mfio78", 410 }; 411 412 static const char * const pistachio_mips_debug_groups[] = { 413 "mfio79", "mfio80", 414 }; 415 416 static const char * const pistachio_eth_debug_groups[] = { 417 "mfio81", "mfio82", 418 }; 419 420 static const char * const pistachio_usb_debug_groups[] = { 421 "mfio83", "mfio84", 422 }; 423 424 static const char * const pistachio_sdhost_debug_groups[] = { 425 "mfio85", "mfio86", 426 }; 427 428 static const char * const pistachio_socif_debug_groups[] = { 429 "mfio87", "mfio88", 430 }; 431 432 static const char * const pistachio_mdc_debug_groups[] = { 433 "mfio77", "mfio78", 434 }; 435 436 static const char * const pistachio_ddr_debug_groups[] = { 437 "mfio79", "mfio80", 438 }; 439 440 static const char * const pistachio_dreq0_groups[] = { 441 "mfio81", 442 }; 443 444 static const char * const pistachio_dreq1_groups[] = { 445 "mfio82", 446 }; 447 448 static const char * const pistachio_dreq2_groups[] = { 449 "mfio87", 450 }; 451 452 static const char * const pistachio_dreq3_groups[] = { 453 "mfio88", 454 }; 455 456 static const char * const pistachio_dreq4_groups[] = { 457 "mfio89", 458 }; 459 460 static const char * const pistachio_dreq5_groups[] = { 461 "mfio89", 462 }; 463 464 static const char * const pistachio_mips_pll_lock_groups[] = { 465 "mfio83", 466 }; 467 468 static const char * const pistachio_audio_pll_lock_groups[] = { 469 "mfio84", 470 }; 471 472 static const char * const pistachio_rpu_v_pll_lock_groups[] = { 473 "mfio85", 474 }; 475 476 static const char * const pistachio_rpu_l_pll_lock_groups[] = { 477 "mfio86", 478 }; 479 480 static const char * const pistachio_sys_pll_lock_groups[] = { 481 "mfio87", 482 }; 483 484 static const char * const pistachio_wifi_pll_lock_groups[] = { 485 "mfio88", 486 }; 487 488 static const char * const pistachio_bt_pll_lock_groups[] = { 489 "mfio89", 490 }; 491 492 #define FUNCTION(_name) \ 493 { \ 494 .name = #_name, \ 495 .groups = pistachio_##_name##_groups, \ 496 .ngroups = ARRAY_SIZE(pistachio_##_name##_groups), \ 497 } 498 499 #define FUNCTION_SCENARIO(_name, _reg, _shift, _mask) \ 500 { \ 501 .name = #_name, \ 502 .groups = pistachio_##_name##_groups, \ 503 .ngroups = ARRAY_SIZE(pistachio_##_name##_groups), \ 504 .scenarios = pistachio_##_name##_scenarios, \ 505 .nscenarios = ARRAY_SIZE(pistachio_##_name##_scenarios),\ 506 .scenario_reg = _reg, \ 507 .scenario_shift = _shift, \ 508 .scenario_mask = _mask, \ 509 } 510 511 enum pistachio_mux_option { 512 PISTACHIO_FUNCTION_NONE = -1, 513 PISTACHIO_FUNCTION_SPIM0, 514 PISTACHIO_FUNCTION_SPIM1, 515 PISTACHIO_FUNCTION_SPIS, 516 PISTACHIO_FUNCTION_SDHOST, 517 PISTACHIO_FUNCTION_I2C0, 518 PISTACHIO_FUNCTION_I2C1, 519 PISTACHIO_FUNCTION_I2C2, 520 PISTACHIO_FUNCTION_I2C3, 521 PISTACHIO_FUNCTION_AUDIO_CLK_IN, 522 PISTACHIO_FUNCTION_I2S_OUT, 523 PISTACHIO_FUNCTION_I2S_DAC_CLK, 524 PISTACHIO_FUNCTION_AUDIO_SYNC, 525 PISTACHIO_FUNCTION_AUDIO_TRIGGER, 526 PISTACHIO_FUNCTION_I2S_IN, 527 PISTACHIO_FUNCTION_UART0, 528 PISTACHIO_FUNCTION_UART1, 529 PISTACHIO_FUNCTION_SPDIF_OUT, 530 PISTACHIO_FUNCTION_SPDIF_IN, 531 PISTACHIO_FUNCTION_ETH, 532 PISTACHIO_FUNCTION_IR, 533 PISTACHIO_FUNCTION_PWMPDM, 534 PISTACHIO_FUNCTION_MIPS_TRACE_CLK, 535 PISTACHIO_FUNCTION_MIPS_TRACE_DINT, 536 PISTACHIO_FUNCTION_MIPS_TRACE_TRIGOUT, 537 PISTACHIO_FUNCTION_MIPS_TRACE_TRIGIN, 538 PISTACHIO_FUNCTION_MIPS_TRACE_DM, 539 PISTACHIO_FUNCTION_MIPS_TRACE_PROBE_N, 540 PISTACHIO_FUNCTION_MIPS_TRACE_DATA, 541 PISTACHIO_FUNCTION_SRAM_DEBUG, 542 PISTACHIO_FUNCTION_ROM_DEBUG, 543 PISTACHIO_FUNCTION_RPU_DEBUG, 544 PISTACHIO_FUNCTION_MIPS_DEBUG, 545 PISTACHIO_FUNCTION_ETH_DEBUG, 546 PISTACHIO_FUNCTION_USB_DEBUG, 547 PISTACHIO_FUNCTION_SDHOST_DEBUG, 548 PISTACHIO_FUNCTION_SOCIF_DEBUG, 549 PISTACHIO_FUNCTION_MDC_DEBUG, 550 PISTACHIO_FUNCTION_DDR_DEBUG, 551 PISTACHIO_FUNCTION_DREQ0, 552 PISTACHIO_FUNCTION_DREQ1, 553 PISTACHIO_FUNCTION_DREQ2, 554 PISTACHIO_FUNCTION_DREQ3, 555 PISTACHIO_FUNCTION_DREQ4, 556 PISTACHIO_FUNCTION_DREQ5, 557 PISTACHIO_FUNCTION_MIPS_PLL_LOCK, 558 PISTACHIO_FUNCTION_AUDIO_PLL_LOCK, 559 PISTACHIO_FUNCTION_RPU_V_PLL_LOCK, 560 PISTACHIO_FUNCTION_RPU_L_PLL_LOCK, 561 PISTACHIO_FUNCTION_SYS_PLL_LOCK, 562 PISTACHIO_FUNCTION_WIFI_PLL_LOCK, 563 PISTACHIO_FUNCTION_BT_PLL_LOCK, 564 PISTACHIO_FUNCTION_DEBUG_RAW_CCA_IND, 565 PISTACHIO_FUNCTION_DEBUG_ED_SEC20_CCA_IND, 566 PISTACHIO_FUNCTION_DEBUG_ED_SEC40_CCA_IND, 567 PISTACHIO_FUNCTION_DEBUG_AGC_DONE_0, 568 PISTACHIO_FUNCTION_DEBUG_AGC_DONE_1, 569 PISTACHIO_FUNCTION_DEBUG_ED_CCA_IND, 570 PISTACHIO_FUNCTION_DEBUG_S2L_DONE, 571 }; 572 573 static const struct pistachio_function pistachio_functions[] = { 574 FUNCTION(spim0), 575 FUNCTION(spim1), 576 FUNCTION(spis), 577 FUNCTION(sdhost), 578 FUNCTION(i2c0), 579 FUNCTION(i2c1), 580 FUNCTION(i2c2), 581 FUNCTION(i2c3), 582 FUNCTION(audio_clk_in), 583 FUNCTION(i2s_out), 584 FUNCTION(i2s_dac_clk), 585 FUNCTION(audio_sync), 586 FUNCTION(audio_trigger), 587 FUNCTION(i2s_in), 588 FUNCTION(uart0), 589 FUNCTION(uart1), 590 FUNCTION(spdif_out), 591 FUNCTION_SCENARIO(spdif_in, PADS_SCENARIO_SELECT, 0, 0x1), 592 FUNCTION(eth), 593 FUNCTION(ir), 594 FUNCTION(pwmpdm), 595 FUNCTION(mips_trace_clk), 596 FUNCTION_SCENARIO(mips_trace_dint, PADS_SCENARIO_SELECT, 1, 0x3), 597 FUNCTION(mips_trace_trigout), 598 FUNCTION_SCENARIO(mips_trace_trigin, PADS_SCENARIO_SELECT, 3, 0x3), 599 FUNCTION(mips_trace_dm), 600 FUNCTION_SCENARIO(mips_probe_n, PADS_SCENARIO_SELECT, 5, 0x3), 601 FUNCTION(mips_trace_data), 602 FUNCTION(sram_debug), 603 FUNCTION(rom_debug), 604 FUNCTION(rpu_debug), 605 FUNCTION(mips_debug), 606 FUNCTION(eth_debug), 607 FUNCTION(usb_debug), 608 FUNCTION(sdhost_debug), 609 FUNCTION(socif_debug), 610 FUNCTION(mdc_debug), 611 FUNCTION(ddr_debug), 612 FUNCTION(dreq0), 613 FUNCTION(dreq1), 614 FUNCTION(dreq2), 615 FUNCTION(dreq3), 616 FUNCTION(dreq4), 617 FUNCTION(dreq5), 618 FUNCTION(mips_pll_lock), 619 FUNCTION(audio_pll_lock), 620 FUNCTION(rpu_v_pll_lock), 621 FUNCTION(rpu_l_pll_lock), 622 FUNCTION(sys_pll_lock), 623 FUNCTION(wifi_pll_lock), 624 FUNCTION(bt_pll_lock), 625 FUNCTION(debug_raw_cca_ind), 626 FUNCTION(debug_ed_sec20_cca_ind), 627 FUNCTION(debug_ed_sec40_cca_ind), 628 FUNCTION(debug_agc_done_0), 629 FUNCTION(debug_agc_done_1), 630 FUNCTION(debug_ed_cca_ind), 631 FUNCTION(debug_s2l_done), 632 }; 633 634 #define PIN_GROUP(_pin, _name) \ 635 { \ 636 .name = #_name, \ 637 .pin = PISTACHIO_PIN_##_pin, \ 638 .mux_option = { \ 639 PISTACHIO_FUNCTION_NONE, \ 640 PISTACHIO_FUNCTION_NONE, \ 641 PISTACHIO_FUNCTION_NONE, \ 642 }, \ 643 .mux_reg = -1, \ 644 .mux_shift = -1, \ 645 .mux_mask = -1, \ 646 } 647 648 #define MFIO_PIN_GROUP(_pin, _func) \ 649 { \ 650 .name = "mfio" #_pin, \ 651 .pin = PISTACHIO_PIN_MFIO(_pin), \ 652 .mux_option = { \ 653 PISTACHIO_FUNCTION_##_func, \ 654 PISTACHIO_FUNCTION_NONE, \ 655 PISTACHIO_FUNCTION_NONE, \ 656 }, \ 657 .mux_reg = -1, \ 658 .mux_shift = -1, \ 659 .mux_mask = -1, \ 660 } 661 662 #define MFIO_MUX_PIN_GROUP(_pin, _f0, _f1, _f2, _reg, _shift, _mask) \ 663 { \ 664 .name = "mfio" #_pin, \ 665 .pin = PISTACHIO_PIN_MFIO(_pin), \ 666 .mux_option = { \ 667 PISTACHIO_FUNCTION_##_f0, \ 668 PISTACHIO_FUNCTION_##_f1, \ 669 PISTACHIO_FUNCTION_##_f2, \ 670 }, \ 671 .mux_reg = _reg, \ 672 .mux_shift = _shift, \ 673 .mux_mask = _mask, \ 674 } 675 676 static const struct pistachio_pin_group pistachio_groups[] = { 677 MFIO_PIN_GROUP(0, SPIM1), 678 MFIO_MUX_PIN_GROUP(1, SPIM1, SPIM0, UART1, 679 PADS_FUNCTION_SELECT0, 0, 0x3), 680 MFIO_MUX_PIN_GROUP(2, SPIM1, SPIM0, UART1, 681 PADS_FUNCTION_SELECT0, 2, 0x3), 682 MFIO_PIN_GROUP(3, SPIM1), 683 MFIO_PIN_GROUP(4, SPIM1), 684 MFIO_PIN_GROUP(5, SPIM1), 685 MFIO_PIN_GROUP(6, SPIM1), 686 MFIO_PIN_GROUP(7, SPIM1), 687 MFIO_PIN_GROUP(8, SPIM0), 688 MFIO_PIN_GROUP(9, SPIM0), 689 MFIO_PIN_GROUP(10, SPIM0), 690 MFIO_PIN_GROUP(11, SPIS), 691 MFIO_PIN_GROUP(12, SPIS), 692 MFIO_PIN_GROUP(13, SPIS), 693 MFIO_PIN_GROUP(14, SPIS), 694 MFIO_MUX_PIN_GROUP(15, SDHOST, MIPS_TRACE_CLK, MIPS_TRACE_DATA, 695 PADS_FUNCTION_SELECT0, 4, 0x3), 696 MFIO_MUX_PIN_GROUP(16, SDHOST, MIPS_TRACE_DINT, MIPS_TRACE_DATA, 697 PADS_FUNCTION_SELECT0, 6, 0x3), 698 MFIO_MUX_PIN_GROUP(17, SDHOST, MIPS_TRACE_TRIGOUT, MIPS_TRACE_DATA, 699 PADS_FUNCTION_SELECT0, 8, 0x3), 700 MFIO_MUX_PIN_GROUP(18, SDHOST, MIPS_TRACE_TRIGIN, MIPS_TRACE_DATA, 701 PADS_FUNCTION_SELECT0, 10, 0x3), 702 MFIO_MUX_PIN_GROUP(19, SDHOST, MIPS_TRACE_DM, MIPS_TRACE_DATA, 703 PADS_FUNCTION_SELECT0, 12, 0x3), 704 MFIO_MUX_PIN_GROUP(20, SDHOST, MIPS_TRACE_PROBE_N, MIPS_TRACE_DATA, 705 PADS_FUNCTION_SELECT0, 14, 0x3), 706 MFIO_MUX_PIN_GROUP(21, SDHOST, NONE, MIPS_TRACE_DATA, 707 PADS_FUNCTION_SELECT0, 16, 0x3), 708 MFIO_MUX_PIN_GROUP(22, SDHOST, NONE, MIPS_TRACE_DATA, 709 PADS_FUNCTION_SELECT0, 18, 0x3), 710 MFIO_PIN_GROUP(23, SDHOST), 711 MFIO_PIN_GROUP(24, SDHOST), 712 MFIO_PIN_GROUP(25, SDHOST), 713 MFIO_PIN_GROUP(26, SDHOST), 714 MFIO_PIN_GROUP(27, SDHOST), 715 MFIO_MUX_PIN_GROUP(28, I2C0, SPIM0, NONE, 716 PADS_FUNCTION_SELECT0, 20, 0x1), 717 MFIO_MUX_PIN_GROUP(29, I2C0, SPIM0, NONE, 718 PADS_FUNCTION_SELECT0, 21, 0x1), 719 MFIO_MUX_PIN_GROUP(30, I2C1, SPIM0, NONE, 720 PADS_FUNCTION_SELECT0, 22, 0x1), 721 MFIO_MUX_PIN_GROUP(31, I2C1, SPIM1, NONE, 722 PADS_FUNCTION_SELECT0, 23, 0x1), 723 MFIO_PIN_GROUP(32, I2C2), 724 MFIO_PIN_GROUP(33, I2C2), 725 MFIO_PIN_GROUP(34, I2C3), 726 MFIO_PIN_GROUP(35, I2C3), 727 MFIO_MUX_PIN_GROUP(36, I2S_OUT, AUDIO_CLK_IN, NONE, 728 PADS_FUNCTION_SELECT0, 24, 0x1), 729 MFIO_MUX_PIN_GROUP(37, I2S_OUT, DEBUG_RAW_CCA_IND, NONE, 730 PADS_FUNCTION_SELECT0, 25, 0x1), 731 MFIO_MUX_PIN_GROUP(38, I2S_OUT, DEBUG_ED_SEC20_CCA_IND, NONE, 732 PADS_FUNCTION_SELECT0, 26, 0x1), 733 MFIO_MUX_PIN_GROUP(39, I2S_OUT, DEBUG_ED_SEC40_CCA_IND, NONE, 734 PADS_FUNCTION_SELECT0, 27, 0x1), 735 MFIO_MUX_PIN_GROUP(40, I2S_OUT, DEBUG_AGC_DONE_0, NONE, 736 PADS_FUNCTION_SELECT0, 28, 0x1), 737 MFIO_MUX_PIN_GROUP(41, I2S_OUT, DEBUG_AGC_DONE_1, NONE, 738 PADS_FUNCTION_SELECT0, 29, 0x1), 739 MFIO_MUX_PIN_GROUP(42, I2S_OUT, DEBUG_ED_CCA_IND, NONE, 740 PADS_FUNCTION_SELECT0, 30, 0x1), 741 MFIO_MUX_PIN_GROUP(43, I2S_OUT, DEBUG_S2L_DONE, NONE, 742 PADS_FUNCTION_SELECT0, 31, 0x1), 743 MFIO_PIN_GROUP(44, I2S_OUT), 744 MFIO_MUX_PIN_GROUP(45, I2S_DAC_CLK, AUDIO_SYNC, NONE, 745 PADS_FUNCTION_SELECT1, 0, 0x1), 746 MFIO_PIN_GROUP(46, AUDIO_TRIGGER), 747 MFIO_PIN_GROUP(47, I2S_IN), 748 MFIO_PIN_GROUP(48, I2S_IN), 749 MFIO_PIN_GROUP(49, I2S_IN), 750 MFIO_PIN_GROUP(50, I2S_IN), 751 MFIO_PIN_GROUP(51, I2S_IN), 752 MFIO_PIN_GROUP(52, I2S_IN), 753 MFIO_PIN_GROUP(53, I2S_IN), 754 MFIO_MUX_PIN_GROUP(54, I2S_IN, NONE, SPDIF_IN, 755 PADS_FUNCTION_SELECT1, 1, 0x3), 756 MFIO_MUX_PIN_GROUP(55, UART0, SPIM0, SPIM1, 757 PADS_FUNCTION_SELECT1, 3, 0x3), 758 MFIO_MUX_PIN_GROUP(56, UART0, SPIM0, SPIM1, 759 PADS_FUNCTION_SELECT1, 5, 0x3), 760 MFIO_MUX_PIN_GROUP(57, UART0, SPIM0, SPIM1, 761 PADS_FUNCTION_SELECT1, 7, 0x3), 762 MFIO_MUX_PIN_GROUP(58, UART0, SPIM1, NONE, 763 PADS_FUNCTION_SELECT1, 9, 0x1), 764 MFIO_PIN_GROUP(59, UART1), 765 MFIO_PIN_GROUP(60, UART1), 766 MFIO_PIN_GROUP(61, SPDIF_OUT), 767 MFIO_PIN_GROUP(62, SPDIF_IN), 768 MFIO_MUX_PIN_GROUP(63, ETH, MIPS_TRACE_CLK, MIPS_TRACE_DATA, 769 PADS_FUNCTION_SELECT1, 10, 0x3), 770 MFIO_MUX_PIN_GROUP(64, ETH, MIPS_TRACE_DINT, MIPS_TRACE_DATA, 771 PADS_FUNCTION_SELECT1, 12, 0x3), 772 MFIO_MUX_PIN_GROUP(65, ETH, MIPS_TRACE_TRIGOUT, MIPS_TRACE_DATA, 773 PADS_FUNCTION_SELECT1, 14, 0x3), 774 MFIO_MUX_PIN_GROUP(66, ETH, MIPS_TRACE_TRIGIN, MIPS_TRACE_DATA, 775 PADS_FUNCTION_SELECT1, 16, 0x3), 776 MFIO_MUX_PIN_GROUP(67, ETH, MIPS_TRACE_DM, MIPS_TRACE_DATA, 777 PADS_FUNCTION_SELECT1, 18, 0x3), 778 MFIO_MUX_PIN_GROUP(68, ETH, MIPS_TRACE_PROBE_N, MIPS_TRACE_DATA, 779 PADS_FUNCTION_SELECT1, 20, 0x3), 780 MFIO_MUX_PIN_GROUP(69, ETH, NONE, MIPS_TRACE_DATA, 781 PADS_FUNCTION_SELECT1, 22, 0x3), 782 MFIO_MUX_PIN_GROUP(70, ETH, NONE, MIPS_TRACE_DATA, 783 PADS_FUNCTION_SELECT1, 24, 0x3), 784 MFIO_PIN_GROUP(71, ETH), 785 MFIO_PIN_GROUP(72, IR), 786 MFIO_MUX_PIN_GROUP(73, PWMPDM, MIPS_TRACE_CLK, SRAM_DEBUG, 787 PADS_FUNCTION_SELECT1, 26, 0x3), 788 MFIO_MUX_PIN_GROUP(74, PWMPDM, MIPS_TRACE_DINT, SRAM_DEBUG, 789 PADS_FUNCTION_SELECT1, 28, 0x3), 790 MFIO_MUX_PIN_GROUP(75, PWMPDM, MIPS_TRACE_TRIGOUT, ROM_DEBUG, 791 PADS_FUNCTION_SELECT1, 30, 0x3), 792 MFIO_MUX_PIN_GROUP(76, PWMPDM, MIPS_TRACE_TRIGIN, ROM_DEBUG, 793 PADS_FUNCTION_SELECT2, 0, 0x3), 794 MFIO_MUX_PIN_GROUP(77, MDC_DEBUG, MIPS_TRACE_DM, RPU_DEBUG, 795 PADS_FUNCTION_SELECT2, 2, 0x3), 796 MFIO_MUX_PIN_GROUP(78, MDC_DEBUG, MIPS_TRACE_PROBE_N, RPU_DEBUG, 797 PADS_FUNCTION_SELECT2, 4, 0x3), 798 MFIO_MUX_PIN_GROUP(79, DDR_DEBUG, MIPS_TRACE_DATA, MIPS_DEBUG, 799 PADS_FUNCTION_SELECT2, 6, 0x3), 800 MFIO_MUX_PIN_GROUP(80, DDR_DEBUG, MIPS_TRACE_DATA, MIPS_DEBUG, 801 PADS_FUNCTION_SELECT2, 8, 0x3), 802 MFIO_MUX_PIN_GROUP(81, DREQ0, MIPS_TRACE_DATA, ETH_DEBUG, 803 PADS_FUNCTION_SELECT2, 10, 0x3), 804 MFIO_MUX_PIN_GROUP(82, DREQ1, MIPS_TRACE_DATA, ETH_DEBUG, 805 PADS_FUNCTION_SELECT2, 12, 0x3), 806 MFIO_MUX_PIN_GROUP(83, MIPS_PLL_LOCK, MIPS_TRACE_DATA, USB_DEBUG, 807 PADS_FUNCTION_SELECT2, 14, 0x3), 808 MFIO_MUX_PIN_GROUP(84, AUDIO_PLL_LOCK, MIPS_TRACE_DATA, USB_DEBUG, 809 PADS_FUNCTION_SELECT2, 16, 0x3), 810 MFIO_MUX_PIN_GROUP(85, RPU_V_PLL_LOCK, MIPS_TRACE_DATA, SDHOST_DEBUG, 811 PADS_FUNCTION_SELECT2, 18, 0x3), 812 MFIO_MUX_PIN_GROUP(86, RPU_L_PLL_LOCK, MIPS_TRACE_DATA, SDHOST_DEBUG, 813 PADS_FUNCTION_SELECT2, 20, 0x3), 814 MFIO_MUX_PIN_GROUP(87, SYS_PLL_LOCK, DREQ2, SOCIF_DEBUG, 815 PADS_FUNCTION_SELECT2, 22, 0x3), 816 MFIO_MUX_PIN_GROUP(88, WIFI_PLL_LOCK, DREQ3, SOCIF_DEBUG, 817 PADS_FUNCTION_SELECT2, 24, 0x3), 818 MFIO_MUX_PIN_GROUP(89, BT_PLL_LOCK, DREQ4, DREQ5, 819 PADS_FUNCTION_SELECT2, 26, 0x3), 820 PIN_GROUP(TCK, "tck"), 821 PIN_GROUP(TRSTN, "trstn"), 822 PIN_GROUP(TDI, "tdi"), 823 PIN_GROUP(TMS, "tms"), 824 PIN_GROUP(TDO, "tdo"), 825 PIN_GROUP(JTAG_COMPLY, "jtag_comply"), 826 PIN_GROUP(SAFE_MODE, "safe_mode"), 827 PIN_GROUP(POR_DISABLE, "por_disable"), 828 PIN_GROUP(RESETN, "resetn"), 829 }; 830 831 static inline u32 pctl_readl(struct pistachio_pinctrl *pctl, u32 reg) 832 { 833 return readl(pctl->base + reg); 834 } 835 836 static inline void pctl_writel(struct pistachio_pinctrl *pctl, u32 val, u32 reg) 837 { 838 writel(val, pctl->base + reg); 839 } 840 841 static inline struct pistachio_gpio_bank *irqd_to_bank(struct irq_data *d) 842 { 843 return gpiochip_get_data(irq_data_get_irq_chip_data(d)); 844 } 845 846 static inline u32 gpio_readl(struct pistachio_gpio_bank *bank, u32 reg) 847 { 848 return readl(bank->base + reg); 849 } 850 851 static inline void gpio_writel(struct pistachio_gpio_bank *bank, u32 val, 852 u32 reg) 853 { 854 writel(val, bank->base + reg); 855 } 856 857 static inline void gpio_mask_writel(struct pistachio_gpio_bank *bank, 858 u32 reg, unsigned int bit, u32 val) 859 { 860 /* 861 * For most of the GPIO registers, bit 16 + X must be set in order to 862 * write bit X. 863 */ 864 gpio_writel(bank, (0x10000 | val) << bit, reg); 865 } 866 867 static inline void gpio_enable(struct pistachio_gpio_bank *bank, 868 unsigned offset) 869 { 870 gpio_mask_writel(bank, GPIO_BIT_EN, offset, 1); 871 } 872 873 static inline void gpio_disable(struct pistachio_gpio_bank *bank, 874 unsigned offset) 875 { 876 gpio_mask_writel(bank, GPIO_BIT_EN, offset, 0); 877 } 878 879 static int pistachio_pinctrl_get_groups_count(struct pinctrl_dev *pctldev) 880 { 881 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 882 883 return pctl->ngroups; 884 } 885 886 static const char *pistachio_pinctrl_get_group_name(struct pinctrl_dev *pctldev, 887 unsigned group) 888 { 889 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 890 891 return pctl->groups[group].name; 892 } 893 894 static int pistachio_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, 895 unsigned group, 896 const unsigned **pins, 897 unsigned *num_pins) 898 { 899 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 900 901 *pins = &pctl->groups[group].pin; 902 *num_pins = 1; 903 904 return 0; 905 } 906 907 static const struct pinctrl_ops pistachio_pinctrl_ops = { 908 .get_groups_count = pistachio_pinctrl_get_groups_count, 909 .get_group_name = pistachio_pinctrl_get_group_name, 910 .get_group_pins = pistachio_pinctrl_get_group_pins, 911 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, 912 .dt_free_map = pinctrl_utils_free_map, 913 }; 914 915 static int pistachio_pinmux_get_functions_count(struct pinctrl_dev *pctldev) 916 { 917 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 918 919 return pctl->nfunctions; 920 } 921 922 static const char * 923 pistachio_pinmux_get_function_name(struct pinctrl_dev *pctldev, unsigned func) 924 { 925 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 926 927 return pctl->functions[func].name; 928 } 929 930 static int pistachio_pinmux_get_function_groups(struct pinctrl_dev *pctldev, 931 unsigned func, 932 const char * const **groups, 933 unsigned * const num_groups) 934 { 935 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 936 937 *groups = pctl->functions[func].groups; 938 *num_groups = pctl->functions[func].ngroups; 939 940 return 0; 941 } 942 943 static int pistachio_pinmux_enable(struct pinctrl_dev *pctldev, 944 unsigned func, unsigned group) 945 { 946 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 947 const struct pistachio_pin_group *pg = &pctl->groups[group]; 948 const struct pistachio_function *pf = &pctl->functions[func]; 949 struct pinctrl_gpio_range *range; 950 unsigned int i; 951 u32 val; 952 953 if (pg->mux_reg > 0) { 954 for (i = 0; i < ARRAY_SIZE(pg->mux_option); i++) { 955 if (pg->mux_option[i] == func) 956 break; 957 } 958 if (i == ARRAY_SIZE(pg->mux_option)) { 959 dev_err(pctl->dev, "Cannot mux pin %u to function %u\n", 960 group, func); 961 return -EINVAL; 962 } 963 964 val = pctl_readl(pctl, pg->mux_reg); 965 val &= ~(pg->mux_mask << pg->mux_shift); 966 val |= i << pg->mux_shift; 967 pctl_writel(pctl, val, pg->mux_reg); 968 969 if (pf->scenarios) { 970 for (i = 0; i < pf->nscenarios; i++) { 971 if (pf->scenarios[i] == group) 972 break; 973 } 974 if (WARN_ON(i == pf->nscenarios)) 975 return -EINVAL; 976 977 val = pctl_readl(pctl, pf->scenario_reg); 978 val &= ~(pf->scenario_mask << pf->scenario_shift); 979 val |= i << pf->scenario_shift; 980 pctl_writel(pctl, val, pf->scenario_reg); 981 } 982 } 983 984 range = pinctrl_find_gpio_range_from_pin(pctl->pctldev, pg->pin); 985 if (range) 986 gpio_disable(gpiochip_get_data(range->gc), pg->pin - range->pin_base); 987 988 return 0; 989 } 990 991 static const struct pinmux_ops pistachio_pinmux_ops = { 992 .get_functions_count = pistachio_pinmux_get_functions_count, 993 .get_function_name = pistachio_pinmux_get_function_name, 994 .get_function_groups = pistachio_pinmux_get_function_groups, 995 .set_mux = pistachio_pinmux_enable, 996 }; 997 998 static int pistachio_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin, 999 unsigned long *config) 1000 { 1001 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 1002 enum pin_config_param param = pinconf_to_config_param(*config); 1003 u32 val, arg; 1004 1005 switch (param) { 1006 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 1007 val = pctl_readl(pctl, PADS_SCHMITT_EN_REG(pin)); 1008 arg = !!(val & PADS_SCHMITT_EN_BIT(pin)); 1009 break; 1010 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: 1011 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)) >> 1012 PADS_PU_PD_SHIFT(pin); 1013 arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_HIGHZ; 1014 break; 1015 case PIN_CONFIG_BIAS_PULL_UP: 1016 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)) >> 1017 PADS_PU_PD_SHIFT(pin); 1018 arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_UP; 1019 break; 1020 case PIN_CONFIG_BIAS_PULL_DOWN: 1021 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)) >> 1022 PADS_PU_PD_SHIFT(pin); 1023 arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_DOWN; 1024 break; 1025 case PIN_CONFIG_BIAS_BUS_HOLD: 1026 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)) >> 1027 PADS_PU_PD_SHIFT(pin); 1028 arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_BUS; 1029 break; 1030 case PIN_CONFIG_SLEW_RATE: 1031 val = pctl_readl(pctl, PADS_SLEW_RATE_REG(pin)); 1032 arg = !!(val & PADS_SLEW_RATE_BIT(pin)); 1033 break; 1034 case PIN_CONFIG_DRIVE_STRENGTH: 1035 val = pctl_readl(pctl, PADS_DRIVE_STRENGTH_REG(pin)) >> 1036 PADS_DRIVE_STRENGTH_SHIFT(pin); 1037 switch (val & PADS_DRIVE_STRENGTH_MASK) { 1038 case PADS_DRIVE_STRENGTH_2MA: 1039 arg = 2; 1040 break; 1041 case PADS_DRIVE_STRENGTH_4MA: 1042 arg = 4; 1043 break; 1044 case PADS_DRIVE_STRENGTH_8MA: 1045 arg = 8; 1046 break; 1047 case PADS_DRIVE_STRENGTH_12MA: 1048 default: 1049 arg = 12; 1050 break; 1051 } 1052 break; 1053 default: 1054 dev_dbg(pctl->dev, "Property %u not supported\n", param); 1055 return -ENOTSUPP; 1056 } 1057 1058 *config = pinconf_to_config_packed(param, arg); 1059 1060 return 0; 1061 } 1062 1063 static int pistachio_pinconf_set(struct pinctrl_dev *pctldev, unsigned pin, 1064 unsigned long *configs, unsigned num_configs) 1065 { 1066 struct pistachio_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev); 1067 enum pin_config_param param; 1068 u32 drv, val, arg; 1069 unsigned int i; 1070 1071 for (i = 0; i < num_configs; i++) { 1072 param = pinconf_to_config_param(configs[i]); 1073 arg = pinconf_to_config_argument(configs[i]); 1074 1075 switch (param) { 1076 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 1077 val = pctl_readl(pctl, PADS_SCHMITT_EN_REG(pin)); 1078 if (arg) 1079 val |= PADS_SCHMITT_EN_BIT(pin); 1080 else 1081 val &= ~PADS_SCHMITT_EN_BIT(pin); 1082 pctl_writel(pctl, val, PADS_SCHMITT_EN_REG(pin)); 1083 break; 1084 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: 1085 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)); 1086 val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin)); 1087 val |= PADS_PU_PD_HIGHZ << PADS_PU_PD_SHIFT(pin); 1088 pctl_writel(pctl, val, PADS_PU_PD_REG(pin)); 1089 break; 1090 case PIN_CONFIG_BIAS_PULL_UP: 1091 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)); 1092 val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin)); 1093 val |= PADS_PU_PD_UP << PADS_PU_PD_SHIFT(pin); 1094 pctl_writel(pctl, val, PADS_PU_PD_REG(pin)); 1095 break; 1096 case PIN_CONFIG_BIAS_PULL_DOWN: 1097 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)); 1098 val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin)); 1099 val |= PADS_PU_PD_DOWN << PADS_PU_PD_SHIFT(pin); 1100 pctl_writel(pctl, val, PADS_PU_PD_REG(pin)); 1101 break; 1102 case PIN_CONFIG_BIAS_BUS_HOLD: 1103 val = pctl_readl(pctl, PADS_PU_PD_REG(pin)); 1104 val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin)); 1105 val |= PADS_PU_PD_BUS << PADS_PU_PD_SHIFT(pin); 1106 pctl_writel(pctl, val, PADS_PU_PD_REG(pin)); 1107 break; 1108 case PIN_CONFIG_SLEW_RATE: 1109 val = pctl_readl(pctl, PADS_SLEW_RATE_REG(pin)); 1110 if (arg) 1111 val |= PADS_SLEW_RATE_BIT(pin); 1112 else 1113 val &= ~PADS_SLEW_RATE_BIT(pin); 1114 pctl_writel(pctl, val, PADS_SLEW_RATE_REG(pin)); 1115 break; 1116 case PIN_CONFIG_DRIVE_STRENGTH: 1117 val = pctl_readl(pctl, PADS_DRIVE_STRENGTH_REG(pin)); 1118 val &= ~(PADS_DRIVE_STRENGTH_MASK << 1119 PADS_DRIVE_STRENGTH_SHIFT(pin)); 1120 switch (arg) { 1121 case 2: 1122 drv = PADS_DRIVE_STRENGTH_2MA; 1123 break; 1124 case 4: 1125 drv = PADS_DRIVE_STRENGTH_4MA; 1126 break; 1127 case 8: 1128 drv = PADS_DRIVE_STRENGTH_8MA; 1129 break; 1130 case 12: 1131 drv = PADS_DRIVE_STRENGTH_12MA; 1132 break; 1133 default: 1134 dev_err(pctl->dev, 1135 "Drive strength %umA not supported\n", 1136 arg); 1137 return -EINVAL; 1138 } 1139 val |= drv << PADS_DRIVE_STRENGTH_SHIFT(pin); 1140 pctl_writel(pctl, val, PADS_DRIVE_STRENGTH_REG(pin)); 1141 break; 1142 default: 1143 dev_err(pctl->dev, "Property %u not supported\n", 1144 param); 1145 return -ENOTSUPP; 1146 } 1147 } 1148 1149 return 0; 1150 } 1151 1152 static const struct pinconf_ops pistachio_pinconf_ops = { 1153 .pin_config_get = pistachio_pinconf_get, 1154 .pin_config_set = pistachio_pinconf_set, 1155 .is_generic = true, 1156 }; 1157 1158 static struct pinctrl_desc pistachio_pinctrl_desc = { 1159 .name = "pistachio-pinctrl", 1160 .pctlops = &pistachio_pinctrl_ops, 1161 .pmxops = &pistachio_pinmux_ops, 1162 .confops = &pistachio_pinconf_ops, 1163 }; 1164 1165 static int pistachio_gpio_get_direction(struct gpio_chip *chip, unsigned offset) 1166 { 1167 struct pistachio_gpio_bank *bank = gpiochip_get_data(chip); 1168 1169 if (gpio_readl(bank, GPIO_OUTPUT_EN) & BIT(offset)) 1170 return GPIO_LINE_DIRECTION_OUT; 1171 1172 return GPIO_LINE_DIRECTION_IN; 1173 } 1174 1175 static int pistachio_gpio_get(struct gpio_chip *chip, unsigned offset) 1176 { 1177 struct pistachio_gpio_bank *bank = gpiochip_get_data(chip); 1178 u32 reg; 1179 1180 if (gpio_readl(bank, GPIO_OUTPUT_EN) & BIT(offset)) 1181 reg = GPIO_OUTPUT; 1182 else 1183 reg = GPIO_INPUT; 1184 1185 return !!(gpio_readl(bank, reg) & BIT(offset)); 1186 } 1187 1188 static void pistachio_gpio_set(struct gpio_chip *chip, unsigned offset, 1189 int value) 1190 { 1191 struct pistachio_gpio_bank *bank = gpiochip_get_data(chip); 1192 1193 gpio_mask_writel(bank, GPIO_OUTPUT, offset, !!value); 1194 } 1195 1196 static int pistachio_gpio_direction_input(struct gpio_chip *chip, 1197 unsigned offset) 1198 { 1199 struct pistachio_gpio_bank *bank = gpiochip_get_data(chip); 1200 1201 gpio_mask_writel(bank, GPIO_OUTPUT_EN, offset, 0); 1202 gpio_enable(bank, offset); 1203 1204 return 0; 1205 } 1206 1207 static int pistachio_gpio_direction_output(struct gpio_chip *chip, 1208 unsigned offset, int value) 1209 { 1210 struct pistachio_gpio_bank *bank = gpiochip_get_data(chip); 1211 1212 pistachio_gpio_set(chip, offset, value); 1213 gpio_mask_writel(bank, GPIO_OUTPUT_EN, offset, 1); 1214 gpio_enable(bank, offset); 1215 1216 return 0; 1217 } 1218 1219 static void pistachio_gpio_irq_ack(struct irq_data *data) 1220 { 1221 struct pistachio_gpio_bank *bank = irqd_to_bank(data); 1222 1223 gpio_mask_writel(bank, GPIO_INTERRUPT_STATUS, data->hwirq, 0); 1224 } 1225 1226 static void pistachio_gpio_irq_mask(struct irq_data *data) 1227 { 1228 struct pistachio_gpio_bank *bank = irqd_to_bank(data); 1229 1230 gpio_mask_writel(bank, GPIO_INTERRUPT_EN, data->hwirq, 0); 1231 } 1232 1233 static void pistachio_gpio_irq_unmask(struct irq_data *data) 1234 { 1235 struct pistachio_gpio_bank *bank = irqd_to_bank(data); 1236 1237 gpio_mask_writel(bank, GPIO_INTERRUPT_EN, data->hwirq, 1); 1238 } 1239 1240 static unsigned int pistachio_gpio_irq_startup(struct irq_data *data) 1241 { 1242 struct gpio_chip *chip = irq_data_get_irq_chip_data(data); 1243 1244 pistachio_gpio_direction_input(chip, data->hwirq); 1245 pistachio_gpio_irq_unmask(data); 1246 1247 return 0; 1248 } 1249 1250 static int pistachio_gpio_irq_set_type(struct irq_data *data, unsigned int type) 1251 { 1252 struct pistachio_gpio_bank *bank = irqd_to_bank(data); 1253 1254 switch (type & IRQ_TYPE_SENSE_MASK) { 1255 case IRQ_TYPE_EDGE_RISING: 1256 gpio_mask_writel(bank, GPIO_INPUT_POLARITY, data->hwirq, 1); 1257 gpio_mask_writel(bank, GPIO_INTERRUPT_TYPE, data->hwirq, 1258 GPIO_INTERRUPT_TYPE_EDGE); 1259 gpio_mask_writel(bank, GPIO_INTERRUPT_EDGE, data->hwirq, 1260 GPIO_INTERRUPT_EDGE_SINGLE); 1261 break; 1262 case IRQ_TYPE_EDGE_FALLING: 1263 gpio_mask_writel(bank, GPIO_INPUT_POLARITY, data->hwirq, 0); 1264 gpio_mask_writel(bank, GPIO_INTERRUPT_TYPE, data->hwirq, 1265 GPIO_INTERRUPT_TYPE_EDGE); 1266 gpio_mask_writel(bank, GPIO_INTERRUPT_EDGE, data->hwirq, 1267 GPIO_INTERRUPT_EDGE_SINGLE); 1268 break; 1269 case IRQ_TYPE_EDGE_BOTH: 1270 gpio_mask_writel(bank, GPIO_INTERRUPT_TYPE, data->hwirq, 1271 GPIO_INTERRUPT_TYPE_EDGE); 1272 gpio_mask_writel(bank, GPIO_INTERRUPT_EDGE, data->hwirq, 1273 GPIO_INTERRUPT_EDGE_DUAL); 1274 break; 1275 case IRQ_TYPE_LEVEL_HIGH: 1276 gpio_mask_writel(bank, GPIO_INPUT_POLARITY, data->hwirq, 1); 1277 gpio_mask_writel(bank, GPIO_INTERRUPT_TYPE, data->hwirq, 1278 GPIO_INTERRUPT_TYPE_LEVEL); 1279 break; 1280 case IRQ_TYPE_LEVEL_LOW: 1281 gpio_mask_writel(bank, GPIO_INPUT_POLARITY, data->hwirq, 0); 1282 gpio_mask_writel(bank, GPIO_INTERRUPT_TYPE, data->hwirq, 1283 GPIO_INTERRUPT_TYPE_LEVEL); 1284 break; 1285 default: 1286 return -EINVAL; 1287 } 1288 1289 if (type & IRQ_TYPE_LEVEL_MASK) 1290 irq_set_handler_locked(data, handle_level_irq); 1291 else 1292 irq_set_handler_locked(data, handle_edge_irq); 1293 1294 return 0; 1295 } 1296 1297 static void pistachio_gpio_irq_handler(struct irq_desc *desc) 1298 { 1299 struct gpio_chip *gc = irq_desc_get_handler_data(desc); 1300 struct pistachio_gpio_bank *bank = gpiochip_get_data(gc); 1301 struct irq_chip *chip = irq_desc_get_chip(desc); 1302 unsigned long pending; 1303 unsigned int pin; 1304 1305 chained_irq_enter(chip, desc); 1306 pending = gpio_readl(bank, GPIO_INTERRUPT_STATUS) & 1307 gpio_readl(bank, GPIO_INTERRUPT_EN); 1308 for_each_set_bit(pin, &pending, 16) 1309 generic_handle_domain_irq(gc->irq.domain, pin); 1310 chained_irq_exit(chip, desc); 1311 } 1312 1313 #define GPIO_BANK(_bank, _pin_base, _npins) \ 1314 { \ 1315 .pin_base = _pin_base, \ 1316 .npins = _npins, \ 1317 .gpio_chip = { \ 1318 .label = "GPIO" #_bank, \ 1319 .request = gpiochip_generic_request, \ 1320 .free = gpiochip_generic_free, \ 1321 .get_direction = pistachio_gpio_get_direction, \ 1322 .direction_input = pistachio_gpio_direction_input, \ 1323 .direction_output = pistachio_gpio_direction_output, \ 1324 .get = pistachio_gpio_get, \ 1325 .set = pistachio_gpio_set, \ 1326 .base = _pin_base, \ 1327 .ngpio = _npins, \ 1328 }, \ 1329 .irq_chip = { \ 1330 .name = "GPIO" #_bank, \ 1331 .irq_startup = pistachio_gpio_irq_startup, \ 1332 .irq_ack = pistachio_gpio_irq_ack, \ 1333 .irq_mask = pistachio_gpio_irq_mask, \ 1334 .irq_unmask = pistachio_gpio_irq_unmask, \ 1335 .irq_set_type = pistachio_gpio_irq_set_type, \ 1336 }, \ 1337 } 1338 1339 static struct pistachio_gpio_bank pistachio_gpio_banks[] = { 1340 GPIO_BANK(0, PISTACHIO_PIN_MFIO(0), 16), 1341 GPIO_BANK(1, PISTACHIO_PIN_MFIO(16), 16), 1342 GPIO_BANK(2, PISTACHIO_PIN_MFIO(32), 16), 1343 GPIO_BANK(3, PISTACHIO_PIN_MFIO(48), 16), 1344 GPIO_BANK(4, PISTACHIO_PIN_MFIO(64), 16), 1345 GPIO_BANK(5, PISTACHIO_PIN_MFIO(80), 10), 1346 }; 1347 1348 static int pistachio_gpio_register(struct pistachio_pinctrl *pctl) 1349 { 1350 struct device_node *node = pctl->dev->of_node; 1351 struct pistachio_gpio_bank *bank; 1352 unsigned int i; 1353 int irq, ret = 0; 1354 1355 for (i = 0; i < pctl->nbanks; i++) { 1356 char child_name[sizeof("gpioXX")]; 1357 struct device_node *child; 1358 struct gpio_irq_chip *girq; 1359 1360 snprintf(child_name, sizeof(child_name), "gpio%d", i); 1361 child = of_get_child_by_name(node, child_name); 1362 if (!child) { 1363 dev_err(pctl->dev, "No node for bank %u\n", i); 1364 ret = -ENODEV; 1365 goto err; 1366 } 1367 1368 if (!of_find_property(child, "gpio-controller", NULL)) { 1369 dev_err(pctl->dev, 1370 "No gpio-controller property for bank %u\n", i); 1371 of_node_put(child); 1372 ret = -ENODEV; 1373 goto err; 1374 } 1375 1376 irq = irq_of_parse_and_map(child, 0); 1377 if (!irq) { 1378 dev_err(pctl->dev, "No IRQ for bank %u\n", i); 1379 of_node_put(child); 1380 ret = -EINVAL; 1381 goto err; 1382 } 1383 1384 bank = &pctl->gpio_banks[i]; 1385 bank->pctl = pctl; 1386 bank->base = pctl->base + GPIO_BANK_BASE(i); 1387 1388 bank->gpio_chip.parent = pctl->dev; 1389 bank->gpio_chip.of_node = child; 1390 1391 girq = &bank->gpio_chip.irq; 1392 girq->chip = &bank->irq_chip; 1393 girq->parent_handler = pistachio_gpio_irq_handler; 1394 girq->num_parents = 1; 1395 girq->parents = devm_kcalloc(pctl->dev, 1, 1396 sizeof(*girq->parents), 1397 GFP_KERNEL); 1398 if (!girq->parents) { 1399 ret = -ENOMEM; 1400 goto err; 1401 } 1402 girq->parents[0] = irq; 1403 girq->default_type = IRQ_TYPE_NONE; 1404 girq->handler = handle_level_irq; 1405 1406 ret = gpiochip_add_data(&bank->gpio_chip, bank); 1407 if (ret < 0) { 1408 dev_err(pctl->dev, "Failed to add GPIO chip %u: %d\n", 1409 i, ret); 1410 goto err; 1411 } 1412 1413 ret = gpiochip_add_pin_range(&bank->gpio_chip, 1414 dev_name(pctl->dev), 0, 1415 bank->pin_base, bank->npins); 1416 if (ret < 0) { 1417 dev_err(pctl->dev, "Failed to add GPIO range %u: %d\n", 1418 i, ret); 1419 gpiochip_remove(&bank->gpio_chip); 1420 goto err; 1421 } 1422 } 1423 1424 return 0; 1425 err: 1426 for (; i > 0; i--) { 1427 bank = &pctl->gpio_banks[i - 1]; 1428 gpiochip_remove(&bank->gpio_chip); 1429 } 1430 return ret; 1431 } 1432 1433 static const struct of_device_id pistachio_pinctrl_of_match[] = { 1434 { .compatible = "img,pistachio-system-pinctrl", }, 1435 { }, 1436 }; 1437 1438 static int pistachio_pinctrl_probe(struct platform_device *pdev) 1439 { 1440 struct pistachio_pinctrl *pctl; 1441 1442 pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL); 1443 if (!pctl) 1444 return -ENOMEM; 1445 pctl->dev = &pdev->dev; 1446 dev_set_drvdata(&pdev->dev, pctl); 1447 1448 pctl->base = devm_platform_ioremap_resource(pdev, 0); 1449 if (IS_ERR(pctl->base)) 1450 return PTR_ERR(pctl->base); 1451 1452 pctl->pins = pistachio_pins; 1453 pctl->npins = ARRAY_SIZE(pistachio_pins); 1454 pctl->functions = pistachio_functions; 1455 pctl->nfunctions = ARRAY_SIZE(pistachio_functions); 1456 pctl->groups = pistachio_groups; 1457 pctl->ngroups = ARRAY_SIZE(pistachio_groups); 1458 pctl->gpio_banks = pistachio_gpio_banks; 1459 pctl->nbanks = ARRAY_SIZE(pistachio_gpio_banks); 1460 1461 pistachio_pinctrl_desc.pins = pctl->pins; 1462 pistachio_pinctrl_desc.npins = pctl->npins; 1463 1464 pctl->pctldev = devm_pinctrl_register(&pdev->dev, &pistachio_pinctrl_desc, 1465 pctl); 1466 if (IS_ERR(pctl->pctldev)) { 1467 dev_err(&pdev->dev, "Failed to register pinctrl device\n"); 1468 return PTR_ERR(pctl->pctldev); 1469 } 1470 1471 return pistachio_gpio_register(pctl); 1472 } 1473 1474 static struct platform_driver pistachio_pinctrl_driver = { 1475 .driver = { 1476 .name = "pistachio-pinctrl", 1477 .of_match_table = pistachio_pinctrl_of_match, 1478 .suppress_bind_attrs = true, 1479 }, 1480 .probe = pistachio_pinctrl_probe, 1481 }; 1482 1483 static int __init pistachio_pinctrl_register(void) 1484 { 1485 return platform_driver_register(&pistachio_pinctrl_driver); 1486 } 1487 arch_initcall(pistachio_pinctrl_register); 1488