2 * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
3 * Copyright (c) 2011 The Chromium OS Authors.
5 * SPDX-License-Identifier: GPL-2.0+
10 #include <asm/arch/pinmux.h>
12 /* return 1 if a pingrp is in range */
13 #define pmux_pingrp_isvalid(pin) (((pin) >= 0) && ((pin) < PMUX_PINGRP_COUNT))
15 /* return 1 if a pmux_func is in range */
16 #define pmux_func_isvalid(func) \
17 (((func) >= 0) && ((func) < PMUX_FUNC_COUNT))
19 /* return 1 if a pin_pupd_is in range */
20 #define pmux_pin_pupd_isvalid(pupd) \
21 (((pupd) >= PMUX_PULL_NORMAL) && ((pupd) <= PMUX_PULL_UP))
23 /* return 1 if a pin_tristate_is in range */
24 #define pmux_pin_tristate_isvalid(tristate) \
25 (((tristate) >= PMUX_TRI_NORMAL) && ((tristate) <= PMUX_TRI_TRISTATE))
27 #ifdef TEGRA_PMX_PINS_HAVE_E_INPUT
28 /* return 1 if a pin_io_is in range */
29 #define pmux_pin_io_isvalid(io) \
30 (((io) >= PMUX_PIN_OUTPUT) && ((io) <= PMUX_PIN_INPUT))
33 #ifdef TEGRA_PMX_PINS_HAVE_LOCK
34 /* return 1 if a pin_lock is in range */
35 #define pmux_pin_lock_isvalid(lock) \
36 (((lock) >= PMUX_PIN_LOCK_DISABLE) && ((lock) <= PMUX_PIN_LOCK_ENABLE))
39 #ifdef TEGRA_PMX_PINS_HAVE_OD
40 /* return 1 if a pin_od is in range */
41 #define pmux_pin_od_isvalid(od) \
42 (((od) >= PMUX_PIN_OD_DISABLE) && ((od) <= PMUX_PIN_OD_ENABLE))
45 #ifdef TEGRA_PMX_PINS_HAVE_IO_RESET
46 /* return 1 if a pin_ioreset_is in range */
47 #define pmux_pin_ioreset_isvalid(ioreset) \
48 (((ioreset) >= PMUX_PIN_IO_RESET_DISABLE) && \
49 ((ioreset) <= PMUX_PIN_IO_RESET_ENABLE))
52 #ifdef TEGRA_PMX_PINS_HAVE_RCV_SEL
53 /* return 1 if a pin_rcv_sel_is in range */
54 #define pmux_pin_rcv_sel_isvalid(rcv_sel) \
55 (((rcv_sel) >= PMUX_PIN_RCV_SEL_NORMAL) && \
56 ((rcv_sel) <= PMUX_PIN_RCV_SEL_HIGH))
59 #ifdef TEGRA_PMX_GRPS_HAVE_LPMD
60 #define pmux_lpmd_isvalid(lpm) \
61 (((lpm) >= PMUX_LPMD_X8) && ((lpm) <= PMUX_LPMD_X))
64 #if defined(TEGRA_PMX_PINS_HAVE_SCHMT) || defined(TEGRA_PMX_GRPS_HAVE_SCHMT)
65 #define pmux_schmt_isvalid(schmt) \
66 (((schmt) >= PMUX_SCHMT_DISABLE) && ((schmt) <= PMUX_SCHMT_ENABLE))
69 #if defined(TEGRA_PMX_PINS_HAVE_HSM) || defined(TEGRA_PMX_GRPS_HAVE_HSM)
70 #define pmux_hsm_isvalid(hsm) \
71 (((hsm) >= PMUX_HSM_DISABLE) && ((hsm) <= PMUX_HSM_ENABLE))
74 #define _R(offset) (u32 *)(NV_PA_APB_MISC_BASE + (offset))
76 #if defined(CONFIG_TEGRA20)
78 #define MUX_REG(grp) _R(0x80 + ((tegra_soc_pingroups[grp].ctl_id / 16) * 4))
79 #define MUX_SHIFT(grp) ((tegra_soc_pingroups[grp].ctl_id % 16) * 2)
81 #define PULL_REG(grp) _R(0xa0 + ((tegra_soc_pingroups[grp].pull_id / 16) * 4))
82 #define PULL_SHIFT(grp) ((tegra_soc_pingroups[grp].pull_id % 16) * 2)
84 #define TRI_REG(grp) _R(0x14 + (((grp) / 32) * 4))
85 #define TRI_SHIFT(grp) ((grp) % 32)
89 #define REG(pin) _R(0x3000 + ((pin) * 4))
91 #define MUX_REG(pin) REG(pin)
92 #define MUX_SHIFT(pin) 0
94 #define PULL_REG(pin) REG(pin)
95 #define PULL_SHIFT(pin) 2
97 #define TRI_REG(pin) REG(pin)
98 #define TRI_SHIFT(pin) 4
100 #endif /* CONFIG_TEGRA20 */
102 #define DRV_REG(group) _R(0x868 + ((group) * 4))
105 * We could force arch-tegraNN/pinmux.h to define all of these. However,
106 * that's a lot of defines, and for now it's manageable to just put a
107 * special case here. It's possible this decision will change with future
110 #ifdef CONFIG_TEGRA210
113 #ifdef TEGRA_PMX_PINS_HAVE_HSM
117 #ifdef TEGRA_PMX_PINS_HAVE_SCHMT
118 #define SCHMT_SHIFT 12
124 #define IO_RESET_SHIFT 8
125 #define RCV_SEL_SHIFT 9
128 #ifdef TEGRA_PMX_SOC_HAS_IO_CLAMPING
129 /* This register/field only exists on Tegra114 and later */
130 #define APB_MISC_PP_PINMUX_GLOBAL_0 0x40
131 #define CLAMP_INPUTS_WHEN_TRISTATED 1
133 void pinmux_set_tristate_input_clamping(void)
135 u32 *reg = _R(APB_MISC_PP_PINMUX_GLOBAL_0);
137 setbits_le32(reg, CLAMP_INPUTS_WHEN_TRISTATED);
140 void pinmux_clear_tristate_input_clamping(void)
142 u32 *reg = _R(APB_MISC_PP_PINMUX_GLOBAL_0);
144 clrbits_le32(reg, CLAMP_INPUTS_WHEN_TRISTATED);
148 void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func)
150 u32 *reg = MUX_REG(pin);
154 if (func == PMUX_FUNC_DEFAULT)
157 /* Error check on pin and func */
158 assert(pmux_pingrp_isvalid(pin));
159 assert(pmux_func_isvalid(func));
161 if (func >= PMUX_FUNC_RSVD1) {
162 mux = (func - PMUX_FUNC_RSVD1) & 3;
164 /* Search for the appropriate function */
165 for (i = 0; i < 4; i++) {
166 if (tegra_soc_pingroups[pin].funcs[i] == func) {
175 val &= ~(3 << MUX_SHIFT(pin));
176 val |= (mux << MUX_SHIFT(pin));
180 void pinmux_set_pullupdown(enum pmux_pingrp pin, enum pmux_pull pupd)
182 u32 *reg = PULL_REG(pin);
185 /* Error check on pin and pupd */
186 assert(pmux_pingrp_isvalid(pin));
187 assert(pmux_pin_pupd_isvalid(pupd));
190 val &= ~(3 << PULL_SHIFT(pin));
191 val |= (pupd << PULL_SHIFT(pin));
195 static void pinmux_set_tristate(enum pmux_pingrp pin, int tri)
197 u32 *reg = TRI_REG(pin);
200 /* Error check on pin */
201 assert(pmux_pingrp_isvalid(pin));
202 assert(pmux_pin_tristate_isvalid(tri));
205 if (tri == PMUX_TRI_TRISTATE)
206 val |= (1 << TRI_SHIFT(pin));
208 val &= ~(1 << TRI_SHIFT(pin));
212 void pinmux_tristate_enable(enum pmux_pingrp pin)
214 pinmux_set_tristate(pin, PMUX_TRI_TRISTATE);
217 void pinmux_tristate_disable(enum pmux_pingrp pin)
219 pinmux_set_tristate(pin, PMUX_TRI_NORMAL);
222 #ifdef TEGRA_PMX_PINS_HAVE_E_INPUT
223 void pinmux_set_io(enum pmux_pingrp pin, enum pmux_pin_io io)
228 if (io == PMUX_PIN_NONE)
231 /* Error check on pin and io */
232 assert(pmux_pingrp_isvalid(pin));
233 assert(pmux_pin_io_isvalid(io));
236 if (io == PMUX_PIN_INPUT)
237 val |= (io & 1) << IO_SHIFT;
239 val &= ~(1 << IO_SHIFT);
244 #ifdef TEGRA_PMX_PINS_HAVE_LOCK
245 static void pinmux_set_lock(enum pmux_pingrp pin, enum pmux_pin_lock lock)
250 if (lock == PMUX_PIN_LOCK_DEFAULT)
253 /* Error check on pin and lock */
254 assert(pmux_pingrp_isvalid(pin));
255 assert(pmux_pin_lock_isvalid(lock));
258 if (lock == PMUX_PIN_LOCK_ENABLE) {
259 val |= (1 << LOCK_SHIFT);
261 if (val & (1 << LOCK_SHIFT))
262 printf("%s: Cannot clear LOCK bit!\n", __func__);
263 val &= ~(1 << LOCK_SHIFT);
271 #ifdef TEGRA_PMX_PINS_HAVE_OD
272 static void pinmux_set_od(enum pmux_pingrp pin, enum pmux_pin_od od)
277 if (od == PMUX_PIN_OD_DEFAULT)
280 /* Error check on pin and od */
281 assert(pmux_pingrp_isvalid(pin));
282 assert(pmux_pin_od_isvalid(od));
285 if (od == PMUX_PIN_OD_ENABLE)
286 val |= (1 << OD_SHIFT);
288 val &= ~(1 << OD_SHIFT);
295 #ifdef TEGRA_PMX_PINS_HAVE_IO_RESET
296 static void pinmux_set_ioreset(enum pmux_pingrp pin,
297 enum pmux_pin_ioreset ioreset)
302 if (ioreset == PMUX_PIN_IO_RESET_DEFAULT)
305 /* Error check on pin and ioreset */
306 assert(pmux_pingrp_isvalid(pin));
307 assert(pmux_pin_ioreset_isvalid(ioreset));
310 if (ioreset == PMUX_PIN_IO_RESET_ENABLE)
311 val |= (1 << IO_RESET_SHIFT);
313 val &= ~(1 << IO_RESET_SHIFT);
320 #ifdef TEGRA_PMX_PINS_HAVE_RCV_SEL
321 static void pinmux_set_rcv_sel(enum pmux_pingrp pin,
322 enum pmux_pin_rcv_sel rcv_sel)
327 if (rcv_sel == PMUX_PIN_RCV_SEL_DEFAULT)
330 /* Error check on pin and rcv_sel */
331 assert(pmux_pingrp_isvalid(pin));
332 assert(pmux_pin_rcv_sel_isvalid(rcv_sel));
335 if (rcv_sel == PMUX_PIN_RCV_SEL_HIGH)
336 val |= (1 << RCV_SEL_SHIFT);
338 val &= ~(1 << RCV_SEL_SHIFT);
345 #ifdef TEGRA_PMX_PINS_HAVE_SCHMT
346 static void pinmux_set_schmt(enum pmux_pingrp pin, enum pmux_schmt schmt)
351 /* NONE means unspecified/do not change/use POR value */
352 if (schmt == PMUX_SCHMT_NONE)
355 /* Error check pad */
356 assert(pmux_pingrp_isvalid(pin));
357 assert(pmux_schmt_isvalid(schmt));
360 if (schmt == PMUX_SCHMT_ENABLE)
361 val |= (1 << SCHMT_SHIFT);
363 val &= ~(1 << SCHMT_SHIFT);
370 #ifdef TEGRA_PMX_PINS_HAVE_HSM
371 static void pinmux_set_hsm(enum pmux_pingrp pin, enum pmux_hsm hsm)
376 /* NONE means unspecified/do not change/use POR value */
377 if (hsm == PMUX_HSM_NONE)
380 /* Error check pad */
381 assert(pmux_pingrp_isvalid(pin));
382 assert(pmux_hsm_isvalid(hsm));
385 if (hsm == PMUX_HSM_ENABLE)
386 val |= (1 << HSM_SHIFT);
388 val &= ~(1 << HSM_SHIFT);
395 static void pinmux_config_pingrp(const struct pmux_pingrp_config *config)
397 enum pmux_pingrp pin = config->pingrp;
399 pinmux_set_func(pin, config->func);
400 pinmux_set_pullupdown(pin, config->pull);
401 pinmux_set_tristate(pin, config->tristate);
402 #ifdef TEGRA_PMX_PINS_HAVE_E_INPUT
403 pinmux_set_io(pin, config->io);
405 #ifdef TEGRA_PMX_PINS_HAVE_LOCK
406 pinmux_set_lock(pin, config->lock);
408 #ifdef TEGRA_PMX_PINS_HAVE_OD
409 pinmux_set_od(pin, config->od);
411 #ifdef TEGRA_PMX_PINS_HAVE_IO_RESET
412 pinmux_set_ioreset(pin, config->ioreset);
414 #ifdef TEGRA_PMX_PINS_HAVE_RCV_SEL
415 pinmux_set_rcv_sel(pin, config->rcv_sel);
417 #ifdef TEGRA_PMX_PINS_HAVE_SCHMT
418 pinmux_set_schmt(pin, config->schmt);
420 #ifdef TEGRA_PMX_PINS_HAVE_HSM
421 pinmux_set_hsm(pin, config->hsm);
425 void pinmux_config_pingrp_table(const struct pmux_pingrp_config *config,
430 for (i = 0; i < len; i++)
431 pinmux_config_pingrp(&config[i]);
434 #ifdef TEGRA_PMX_SOC_HAS_DRVGRPS
436 #define pmux_drvgrp_isvalid(pd) (((pd) >= 0) && ((pd) < PMUX_DRVGRP_COUNT))
438 #define pmux_slw_isvalid(slw) \
439 (((slw) >= PMUX_SLWF_MIN) && ((slw) <= PMUX_SLWF_MAX))
441 #define pmux_drv_isvalid(drv) \
442 (((drv) >= PMUX_DRVUP_MIN) && ((drv) <= PMUX_DRVUP_MAX))
444 #ifdef TEGRA_PMX_GRPS_HAVE_HSM
447 #ifdef TEGRA_PMX_GRPS_HAVE_SCHMT
448 #define SCHMT_SHIFT 3
450 #ifdef TEGRA_PMX_GRPS_HAVE_LPMD
452 #define LPMD_MASK (3 << LPMD_SHIFT)
455 * Note that the following DRV* and SLW* defines are accurate for many drive
456 * groups on many SoCs. We really need a per-group data structure to solve
457 * this, since the fields are in different positions/sizes in different
458 * registers (for different groups).
460 * On Tegra30/114/124, the DRV*_SHIFT values vary.
461 * On Tegra30, the SLW*_SHIFT values vary.
462 * On Tegra30/114/124/210, the DRV*_MASK values vary, although the values
463 * below are wide enough to cover the widest fields, and hopefully don't
464 * interfere with any other fields.
465 * On Tegra30, the SLW*_MASK values vary, but we can't use a value that's
466 * wide enough to cover all cases, since that would cause the field to
467 * overlap with other fields in the narrower cases.
469 #define DRVDN_SHIFT 12
470 #define DRVDN_MASK (0x7F << DRVDN_SHIFT)
471 #define DRVUP_SHIFT 20
472 #define DRVUP_MASK (0x7F << DRVUP_SHIFT)
473 #define SLWR_SHIFT 28
474 #define SLWR_MASK (3 << SLWR_SHIFT)
475 #define SLWF_SHIFT 30
476 #define SLWF_MASK (3 << SLWF_SHIFT)
478 static void pinmux_set_drvup_slwf(enum pmux_drvgrp grp, int slwf)
480 u32 *reg = DRV_REG(grp);
483 /* NONE means unspecified/do not change/use POR value */
484 if (slwf == PMUX_SLWF_NONE)
487 /* Error check on pad and slwf */
488 assert(pmux_drvgrp_isvalid(grp));
489 assert(pmux_slw_isvalid(slwf));
493 val |= (slwf << SLWF_SHIFT);
499 static void pinmux_set_drvdn_slwr(enum pmux_drvgrp grp, int slwr)
501 u32 *reg = DRV_REG(grp);
504 /* NONE means unspecified/do not change/use POR value */
505 if (slwr == PMUX_SLWR_NONE)
508 /* Error check on pad and slwr */
509 assert(pmux_drvgrp_isvalid(grp));
510 assert(pmux_slw_isvalid(slwr));
514 val |= (slwr << SLWR_SHIFT);
520 static void pinmux_set_drvup(enum pmux_drvgrp grp, int drvup)
522 u32 *reg = DRV_REG(grp);
525 /* NONE means unspecified/do not change/use POR value */
526 if (drvup == PMUX_DRVUP_NONE)
529 /* Error check on pad and drvup */
530 assert(pmux_drvgrp_isvalid(grp));
531 assert(pmux_drv_isvalid(drvup));
535 val |= (drvup << DRVUP_SHIFT);
541 static void pinmux_set_drvdn(enum pmux_drvgrp grp, int drvdn)
543 u32 *reg = DRV_REG(grp);
546 /* NONE means unspecified/do not change/use POR value */
547 if (drvdn == PMUX_DRVDN_NONE)
550 /* Error check on pad and drvdn */
551 assert(pmux_drvgrp_isvalid(grp));
552 assert(pmux_drv_isvalid(drvdn));
556 val |= (drvdn << DRVDN_SHIFT);
562 #ifdef TEGRA_PMX_GRPS_HAVE_LPMD
563 static void pinmux_set_lpmd(enum pmux_drvgrp grp, enum pmux_lpmd lpmd)
565 u32 *reg = DRV_REG(grp);
568 /* NONE means unspecified/do not change/use POR value */
569 if (lpmd == PMUX_LPMD_NONE)
572 /* Error check pad and lpmd value */
573 assert(pmux_drvgrp_isvalid(grp));
574 assert(pmux_lpmd_isvalid(lpmd));
578 val |= (lpmd << LPMD_SHIFT);
585 #ifdef TEGRA_PMX_GRPS_HAVE_SCHMT
586 static void pinmux_set_schmt(enum pmux_drvgrp grp, enum pmux_schmt schmt)
588 u32 *reg = DRV_REG(grp);
591 /* NONE means unspecified/do not change/use POR value */
592 if (schmt == PMUX_SCHMT_NONE)
595 /* Error check pad */
596 assert(pmux_drvgrp_isvalid(grp));
597 assert(pmux_schmt_isvalid(schmt));
600 if (schmt == PMUX_SCHMT_ENABLE)
601 val |= (1 << SCHMT_SHIFT);
603 val &= ~(1 << SCHMT_SHIFT);
610 #ifdef TEGRA_PMX_GRPS_HAVE_HSM
611 static void pinmux_set_hsm(enum pmux_drvgrp grp, enum pmux_hsm hsm)
613 u32 *reg = DRV_REG(grp);
616 /* NONE means unspecified/do not change/use POR value */
617 if (hsm == PMUX_HSM_NONE)
620 /* Error check pad */
621 assert(pmux_drvgrp_isvalid(grp));
622 assert(pmux_hsm_isvalid(hsm));
625 if (hsm == PMUX_HSM_ENABLE)
626 val |= (1 << HSM_SHIFT);
628 val &= ~(1 << HSM_SHIFT);
635 static void pinmux_config_drvgrp(const struct pmux_drvgrp_config *config)
637 enum pmux_drvgrp grp = config->drvgrp;
639 pinmux_set_drvup_slwf(grp, config->slwf);
640 pinmux_set_drvdn_slwr(grp, config->slwr);
641 pinmux_set_drvup(grp, config->drvup);
642 pinmux_set_drvdn(grp, config->drvdn);
643 #ifdef TEGRA_PMX_GRPS_HAVE_LPMD
644 pinmux_set_lpmd(grp, config->lpmd);
646 #ifdef TEGRA_PMX_GRPS_HAVE_SCHMT
647 pinmux_set_schmt(grp, config->schmt);
649 #ifdef TEGRA_PMX_GRPS_HAVE_HSM
650 pinmux_set_hsm(grp, config->hsm);
654 void pinmux_config_drvgrp_table(const struct pmux_drvgrp_config *config,
659 for (i = 0; i < len; i++)
660 pinmux_config_drvgrp(&config[i]);
662 #endif /* TEGRA_PMX_HAS_DRVGRPS */