pinctrl/nomadik/pinctrl-ab8500.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) ST-Ericsson SA 2012
5  * Author: Patrice Chotard <patrice.chotard@stericsson.com> for ST-Ericsson.
13 #include "pinctrl-abx500.h"
134  * The groups are arranged as sets per altfunction column, so we can
135  * mux in one group at a time by selecting the same altfunction for them
358  * ALTERNATE_FUNCTIONS(GPIO_NUMBER, GPIOSEL bit, ALTERNATFUNC bit1,
364  *	means that pin AB8500_PIN_W17 (pin 13) supports 4 mux (default/ALT_A,
366  *	select the mux.  ALTA, ALTB and ALTC val indicates values to write in
368  *	designers didn't apply the same logic on how to select mux in the
371  *	As this pins supports at least ALT_B mux, default mux is
372  *	selected by writing 1 in GPIOSEL bit :
374  *		| GPIOSEL bit=4 | alternatfunc bit2=4 | alternatfunc bit1=3
381  *	means that pin AB8500_PIN_W18 (pin 8) supports 2 mux, so only GPIOSEL
382  *	register is used to select the mux. As this pins doesn't support at
383  *	least ALT_B mux, default mux is by writing 0 in GPIOSEL bit :
385  *		| GPIOSEL bit=7 | alternatfunc bit2=  | alternatfunc bit1=
393 	ALTERNATE_FUNCTIONS(1,	    0, UNUSED, UNUSED, 0, 0, 0), /* GPIO1, altA controlled by bit 0 */
394 	ALTERNATE_FUNCTIONS(2,      1, UNUSED, UNUSED, 0, 0, 0), /* GPIO2, altA controlled by bit 1 */
395 	ALTERNATE_FUNCTIONS(3,      2, UNUSED, UNUSED, 0, 0, 0), /* GPIO3, altA controlled by bit 2*/
396 	ALTERNATE_FUNCTIONS(4,      3, UNUSED, UNUSED, 0, 0, 0), /* GPIO4, altA controlled by bit 3*/
397 	/* bit 4 reserved */
399 	ALTERNATE_FUNCTIONS(6,      5, UNUSED, UNUSED, 0, 0, 0), /* GPIO6, altA controlled by bit 5*/
400 	ALTERNATE_FUNCTIONS(7,      6, UNUSED, UNUSED, 0, 0, 0), /* GPIO7, altA controlled by bit 6*/
401 	ALTERNATE_FUNCTIONS(8,      7, UNUSED, UNUSED, 0, 0, 0), /* GPIO8, altA controlled by bit 7*/
403 	ALTERNATE_FUNCTIONS(9,      0, UNUSED, UNUSED, 0, 0, 0), /* GPIO9, altA controlled by bit 0*/
404 …NATE_FUNCTIONS(10,     1,      0, UNUSED, 0, 1, 0), /* GPIO10, altA and altB controlled by bit 0 */
405 …NATE_FUNCTIONS(11,     2,      1, UNUSED, 0, 1, 0), /* GPIO11, altA and altB controlled by bit 1 */
406 …NATE_FUNCTIONS(12,     3,      2, UNUSED, 0, 1, 0), /* GPIO12, altA and altB controlled by bit 2 */
407 …ONS(13,     4,      3,      4, 0, 1, 2), /* GPIO13, altA altB and altC controlled by bit 3 and 4 */
408 	ALTERNATE_FUNCTIONS(14,     5, UNUSED, UNUSED, 0, 0, 0), /* GPIO14, altA controlled by bit 5 */
409 	ALTERNATE_FUNCTIONS(15,     6, UNUSED, UNUSED, 0, 0, 0), /* GPIO15, altA controlled by bit 6 */
410 	ALTERNATE_FUNCTIONS(16,     7, UNUSED, UNUSED, 0, 0, 0), /* GPIO16, altA controlled by bit 7 */
412 	 * pins 17 to 20 are special case, only bit 0 is used to select
416 	ALTERNATE_FUNCTIONS(17,      0, UNUSED, UNUSED, 0, 0, 0), /* GPIO17, altA controlled by bit 0 */
417 	ALTERNATE_FUNCTIONS(18,      0, UNUSED, UNUSED, 0, 0, 0), /* GPIO18, altA controlled by bit 0 */
418 	ALTERNATE_FUNCTIONS(19,      0, UNUSED, UNUSED, 0, 0, 0), /* GPIO19, altA controlled by bit 0 */
419 	ALTERNATE_FUNCTIONS(20,      0, UNUSED, UNUSED, 0, 0, 0), /* GPIO20, altA controlled by bit 0 */
420 	ALTERNATE_FUNCTIONS(21,      4, UNUSED, UNUSED, 0, 0, 0), /* GPIO21, altA controlled by bit 4 */
421 	ALTERNATE_FUNCTIONS(22,      5, UNUSED, UNUSED, 0, 0, 0), /* GPIO22, altA controlled by bit 5 */
422 	ALTERNATE_FUNCTIONS(23,      6, UNUSED, UNUSED, 0, 0, 0), /* GPIO23, altA controlled by bit 6 */
423 	ALTERNATE_FUNCTIONS(24,      7, UNUSED, UNUSED, 0, 0, 0), /* GPIO24, altA controlled by bit 7 */
425 	ALTERNATE_FUNCTIONS(25,      0, UNUSED, UNUSED, 0, 0, 0), /* GPIO25, altA controlled by bit 0 */
426 	/* pin 26 special case, no alternate function, bit 1 reserved */
428 	ALTERNATE_FUNCTIONS(27,      2, UNUSED, UNUSED, 0, 0, 0), /* GPIO27, altA controlled by bit 2 */
429 	ALTERNATE_FUNCTIONS(28,      3, UNUSED, UNUSED, 0, 0, 0), /* GPIO28, altA controlled by bit 3 */
430 	ALTERNATE_FUNCTIONS(29,      4, UNUSED, UNUSED, 0, 0, 0), /* GPIO29, altA controlled by bit 4 */
431 	ALTERNATE_FUNCTIONS(30,      5, UNUSED, UNUSED, 0, 0, 0), /* GPIO30, altA controlled by bit 5 */
432 	ALTERNATE_FUNCTIONS(31,      6, UNUSED, UNUSED, 0, 0, 0), /* GPIO31, altA controlled by bit 6 */
433 	ALTERNATE_FUNCTIONS(32,      7, UNUSED, UNUSED, 0, 0, 0), /* GPIO32, altA controlled by bit 7 */
436 	ALTERNATE_FUNCTIONS(34,      1, UNUSED, UNUSED, 0, 0, 0), /* GPIO34, altA controlled by bit 1 */
437 	/* pin 35 special case, no alternate function, bit 2 reserved */
439 	ALTERNATE_FUNCTIONS(36,      3, UNUSED, UNUSED, 0, 0, 0), /* GPIO36, altA controlled by bit 3 */
440 	ALTERNATE_FUNCTIONS(37,      4, UNUSED, UNUSED, 0, 0, 0), /* GPIO37, altA controlled by bit 4 */
441 	ALTERNATE_FUNCTIONS(38,      5, UNUSED, UNUSED, 0, 0, 0), /* GPIO38, altA controlled by bit 5 */
442 	ALTERNATE_FUNCTIONS(39,      6, UNUSED, UNUSED, 0, 0, 0), /* GPIO39, altA controlled by bit 6 */
443 	ALTERNATE_FUNCTIONS(40,      7, UNUSED, UNUSED, 0, 0, 0), /* GPIO40, altA controlled by bit 7 */
445 	ALTERNATE_FUNCTIONS(41,      0, UNUSED, UNUSED, 0, 0, 0), /* GPIO41, altA controlled by bit 0 */
446 	ALTERNATE_FUNCTIONS(42,      1, UNUSED, UNUSED, 0, 0, 0), /* GPIO42, altA controlled by bit 1 */