pinctrl-sdm660-lpass-lpi.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * This driver is solely based on the limited information in downstream code.
  4 * Any verification with schematics would be greatly appreciated.
  5 *
  6 * Copyright (c) 2023, Richard Acayan. All rights reserved.
  7 */
  8
  9#include <linux/kernel.h>
 10#include <linux/module.h>
 11#include <linux/of.h>
 12#include <linux/platform_device.h>
 13#include <linux/pinctrl/pinctrl.h>
 14
 15#include "pinctrl-lpass-lpi.h"
 16
 17enum lpass_lpi_functions {
 18	LPI_MUX_comp_rx,
 19	LPI_MUX_dmic1_clk,
 20	LPI_MUX_dmic1_data,
 21	LPI_MUX_dmic2_clk,
 22	LPI_MUX_dmic2_data,
 23	LPI_MUX_mclk0,
 24	LPI_MUX_pdm_tx,
 25	LPI_MUX_pdm_clk,
 26	LPI_MUX_pdm_rx,
 27	LPI_MUX_pdm_sync,
 28
 29	LPI_MUX_gpio,
 30	LPI_MUX__,
 31};
 32
 33static const struct pinctrl_pin_desc sdm660_lpi_pinctrl_pins[] = {
 34	PINCTRL_PIN(0, "gpio0"),
 35	PINCTRL_PIN(1, "gpio1"),
 36	PINCTRL_PIN(2, "gpio2"),
 37	PINCTRL_PIN(3, "gpio3"),
 38	PINCTRL_PIN(4, "gpio4"),
 39	PINCTRL_PIN(5, "gpio5"),
 40	PINCTRL_PIN(6, "gpio6"),
 41	PINCTRL_PIN(7, "gpio7"),
 42	PINCTRL_PIN(8, "gpio8"),
 43	PINCTRL_PIN(9, "gpio9"),
 44	PINCTRL_PIN(10, "gpio10"),
 45	PINCTRL_PIN(11, "gpio11"),
 46	PINCTRL_PIN(12, "gpio12"),
 47	PINCTRL_PIN(13, "gpio13"),
 48	PINCTRL_PIN(14, "gpio14"),
 49	PINCTRL_PIN(15, "gpio15"),
 50	PINCTRL_PIN(16, "gpio16"),
 51	PINCTRL_PIN(17, "gpio17"),
 52	PINCTRL_PIN(18, "gpio18"),
 53	PINCTRL_PIN(19, "gpio19"),
 54	PINCTRL_PIN(20, "gpio20"),
 55	PINCTRL_PIN(21, "gpio21"),
 56	PINCTRL_PIN(22, "gpio22"),
 57	PINCTRL_PIN(23, "gpio23"),
 58	PINCTRL_PIN(24, "gpio24"),
 59	PINCTRL_PIN(25, "gpio25"),
 60	PINCTRL_PIN(26, "gpio26"),
 61	PINCTRL_PIN(27, "gpio27"),
 62	PINCTRL_PIN(28, "gpio28"),
 63	PINCTRL_PIN(29, "gpio29"),
 64	PINCTRL_PIN(30, "gpio30"),
 65	PINCTRL_PIN(31, "gpio31"),
 66};
 67
 68static const char * const comp_rx_groups[] = { "gpio22", "gpio24" };
 69static const char * const dmic1_clk_groups[] = { "gpio26" };
 70static const char * const dmic1_data_groups[] = { "gpio27" };
 71static const char * const dmic2_clk_groups[] = { "gpio28" };
 72static const char * const dmic2_data_groups[] = { "gpio29" };
 73static const char * const mclk0_groups[] = { "gpio18" };
 74static const char * const pdm_tx_groups[] = { "gpio20" };
 75static const char * const pdm_clk_groups[] = { "gpio18" };
 76static const char * const pdm_rx_groups[] = { "gpio21", "gpio23", "gpio25" };
 77static const char * const pdm_sync_groups[] = { "gpio19" };
 78
 79const struct lpi_pingroup sdm660_lpi_pinctrl_groups[] = {
 80	LPI_PINGROUP_OFFSET(0, LPI_NO_SLEW, _, _, _, _, 0x0000),
 81	LPI_PINGROUP_OFFSET(1, LPI_NO_SLEW, _, _, _, _, 0x1000),
 82	LPI_PINGROUP_OFFSET(2, LPI_NO_SLEW, _, _, _, _, 0x2000),
 83	LPI_PINGROUP_OFFSET(3, LPI_NO_SLEW, _, _, _, _, 0x2010),
 84	LPI_PINGROUP_OFFSET(4, LPI_NO_SLEW, _, _, _, _, 0x3000),
 85	LPI_PINGROUP_OFFSET(5, LPI_NO_SLEW, _, _, _, _, 0x3010),
 86	LPI_PINGROUP_OFFSET(6, LPI_NO_SLEW, _, _, _, _, 0x4000),
 87	LPI_PINGROUP_OFFSET(7, LPI_NO_SLEW, _, _, _, _, 0x4010),
 88	LPI_PINGROUP_OFFSET(8, LPI_NO_SLEW, _, _, _, _, 0x5000),
 89	LPI_PINGROUP_OFFSET(9, LPI_NO_SLEW, _, _, _, _, 0x5010),
 90	LPI_PINGROUP_OFFSET(10, LPI_NO_SLEW, _, _, _, _, 0x5020),
 91	LPI_PINGROUP_OFFSET(11, LPI_NO_SLEW, _, _, _, _, 0x5030),
 92	LPI_PINGROUP_OFFSET(12, LPI_NO_SLEW, _, _, _, _, 0x6000),
 93	LPI_PINGROUP_OFFSET(13, LPI_NO_SLEW, _, _, _, _, 0x6010),
 94	LPI_PINGROUP_OFFSET(14, LPI_NO_SLEW, _, _, _, _, 0x7000),
 95	LPI_PINGROUP_OFFSET(15, LPI_NO_SLEW, _, _, _, _, 0x7010),
 96	LPI_PINGROUP_OFFSET(16, LPI_NO_SLEW, _, _, _, _, 0x5040),
 97	LPI_PINGROUP_OFFSET(17, LPI_NO_SLEW, _, _, _, _, 0x5050),
 98
 99	LPI_PINGROUP_OFFSET(18, LPI_NO_SLEW, pdm_clk, mclk0, _, _, 0x8000),
100	LPI_PINGROUP_OFFSET(19, LPI_NO_SLEW, pdm_sync, _, _, _, 0x8010),
101	LPI_PINGROUP_OFFSET(20, LPI_NO_SLEW, pdm_tx, _, _, _, 0x8020),
102	LPI_PINGROUP_OFFSET(21, LPI_NO_SLEW, pdm_rx, _, _, _, 0x8030),
103	LPI_PINGROUP_OFFSET(22, LPI_NO_SLEW, comp_rx, _, _, _, 0x8040),
104	LPI_PINGROUP_OFFSET(23, LPI_NO_SLEW, pdm_rx, _, _, _, 0x8050),
105	LPI_PINGROUP_OFFSET(24, LPI_NO_SLEW, comp_rx, _, _, _, 0x8060),
106	LPI_PINGROUP_OFFSET(25, LPI_NO_SLEW, pdm_rx, _, _, _, 0x8070),
107	LPI_PINGROUP_OFFSET(26, LPI_NO_SLEW, dmic1_clk, _, _, _, 0x9000),
108	LPI_PINGROUP_OFFSET(27, LPI_NO_SLEW, dmic1_data, _, _, _, 0x9010),
109	LPI_PINGROUP_OFFSET(28, LPI_NO_SLEW, dmic2_clk, _, _, _, 0xa000),
110	LPI_PINGROUP_OFFSET(29, LPI_NO_SLEW, dmic2_data, _, _, _, 0xa010),
111
112	LPI_PINGROUP_OFFSET(30, LPI_NO_SLEW, _, _, _, _, 0xb000),
113	LPI_PINGROUP_OFFSET(31, LPI_NO_SLEW, _, _, _, _, 0xb010),
114};
115
116const struct lpi_function sdm660_lpi_pinctrl_functions[] = {
117	LPI_FUNCTION(comp_rx),
118	LPI_FUNCTION(dmic1_clk),
119	LPI_FUNCTION(dmic1_data),
120	LPI_FUNCTION(dmic2_clk),
121	LPI_FUNCTION(dmic2_data),
122	LPI_FUNCTION(mclk0),
123	LPI_FUNCTION(pdm_tx),
124	LPI_FUNCTION(pdm_clk),
125	LPI_FUNCTION(pdm_rx),
126	LPI_FUNCTION(pdm_sync),
127};
128
129static const struct lpi_pinctrl_variant_data sdm660_lpi_pinctrl_data = {
130	.pins = sdm660_lpi_pinctrl_pins,
131	.npins = ARRAY_SIZE(sdm660_lpi_pinctrl_pins),
132	.groups = sdm660_lpi_pinctrl_groups,
133	.ngroups = ARRAY_SIZE(sdm660_lpi_pinctrl_groups),
134	.functions = sdm660_lpi_pinctrl_functions,
135	.nfunctions = ARRAY_SIZE(sdm660_lpi_pinctrl_functions),
136	.flags = LPI_FLAG_SLEW_RATE_SAME_REG | LPI_FLAG_USE_PREDEFINED_PIN_OFFSET
137};
138
139static const struct of_device_id sdm660_lpi_pinctrl_of_match[] = {
140	{
141		.compatible = "qcom,sdm660-lpass-lpi-pinctrl",
142		.data = &sdm660_lpi_pinctrl_data,
143	},
144	{ }
145};
146MODULE_DEVICE_TABLE(of, sdm660_lpi_pinctrl_of_match);
147
148static struct platform_driver sdm660_lpi_pinctrl_driver = {
149	.driver = {
150		.name = "qcom-sdm660-lpass-lpi-pinctrl",
151		.of_match_table = sdm660_lpi_pinctrl_of_match,
152	},
153	.probe = lpi_pinctrl_probe,
154	.remove = lpi_pinctrl_remove,
155};
156module_platform_driver(sdm660_lpi_pinctrl_driver);
157
158MODULE_AUTHOR("Richard Acayan <mailingradian@gmail.com>");
159MODULE_DESCRIPTION("QTI SDM660 LPI GPIO pin control driver");
160MODULE_LICENSE("GPL");