1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
4  * Copyright (c) 2020-2023 Linaro Ltd.
5  */
6 
7 #include <linux/gpio/driver.h>
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 
11 #include "pinctrl-lpass-lpi.h"
12 
13 enum lpass_lpi_functions {
14 	LPI_MUX_dmic1_clk,
15 	LPI_MUX_dmic1_data,
16 	LPI_MUX_dmic2_clk,
17 	LPI_MUX_dmic2_data,
18 	LPI_MUX_dmic3_clk,
19 	LPI_MUX_dmic3_data,
20 	LPI_MUX_i2s1_clk,
21 	LPI_MUX_i2s1_data,
22 	LPI_MUX_i2s1_ws,
23 	LPI_MUX_i2s2_clk,
24 	LPI_MUX_i2s2_data,
25 	LPI_MUX_i2s2_ws,
26 	LPI_MUX_qua_mi2s_data,
27 	LPI_MUX_qua_mi2s_sclk,
28 	LPI_MUX_qua_mi2s_ws,
29 	LPI_MUX_swr_rx_clk,
30 	LPI_MUX_swr_rx_data,
31 	LPI_MUX_swr_tx_clk,
32 	LPI_MUX_swr_tx_data,
33 	LPI_MUX_wsa_swr_clk,
34 	LPI_MUX_wsa_swr_data,
35 	LPI_MUX_gpio,
36 	LPI_MUX__,
37 };
38 
39 static const struct pinctrl_pin_desc sm8350_lpi_pins[] = {
40 	PINCTRL_PIN(0, "gpio0"),
41 	PINCTRL_PIN(1, "gpio1"),
42 	PINCTRL_PIN(2, "gpio2"),
43 	PINCTRL_PIN(3, "gpio3"),
44 	PINCTRL_PIN(4, "gpio4"),
45 	PINCTRL_PIN(5, "gpio5"),
46 	PINCTRL_PIN(6, "gpio6"),
47 	PINCTRL_PIN(7, "gpio7"),
48 	PINCTRL_PIN(8, "gpio8"),
49 	PINCTRL_PIN(9, "gpio9"),
50 	PINCTRL_PIN(10, "gpio10"),
51 	PINCTRL_PIN(11, "gpio11"),
52 	PINCTRL_PIN(12, "gpio12"),
53 	PINCTRL_PIN(13, "gpio13"),
54 	PINCTRL_PIN(14, "gpio14"),
55 };
56 
57 static const char * const swr_tx_clk_groups[] = { "gpio0" };
58 static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5", "gpio14" };
59 static const char * const swr_rx_clk_groups[] = { "gpio3" };
60 static const char * const swr_rx_data_groups[] = { "gpio4", "gpio5" };
61 static const char * const dmic1_clk_groups[] = { "gpio6" };
62 static const char * const dmic1_data_groups[] = { "gpio7" };
63 static const char * const dmic2_clk_groups[] = { "gpio8" };
64 static const char * const dmic2_data_groups[] = { "gpio9" };
65 static const char * const i2s2_clk_groups[] = { "gpio10" };
66 static const char * const i2s2_ws_groups[] = { "gpio11" };
67 static const char * const dmic3_clk_groups[] = { "gpio12" };
68 static const char * const dmic3_data_groups[] = { "gpio13" };
69 static const char * const qua_mi2s_sclk_groups[] = { "gpio0" };
70 static const char * const qua_mi2s_ws_groups[] = { "gpio1" };
71 static const char * const qua_mi2s_data_groups[] = { "gpio2", "gpio3", "gpio4" };
72 static const char * const i2s1_clk_groups[] = { "gpio6" };
73 static const char * const i2s1_ws_groups[] = { "gpio7" };
74 static const char * const i2s1_data_groups[] = { "gpio8", "gpio9" };
75 static const char * const wsa_swr_clk_groups[] = { "gpio10" };
76 static const char * const wsa_swr_data_groups[] = { "gpio11" };
77 static const char * const i2s2_data_groups[] = { "gpio12", "gpio12" };
78 
79 static const struct lpi_pingroup sm8350_groups[] = {
80 	LPI_PINGROUP(0, 0, swr_tx_clk, qua_mi2s_sclk, _, _),
81 	LPI_PINGROUP(1, 2, swr_tx_data, qua_mi2s_ws, _, _),
82 	LPI_PINGROUP(2, 4, swr_tx_data, qua_mi2s_data, _, _),
83 	LPI_PINGROUP(3, 8, swr_rx_clk, qua_mi2s_data, _, _),
84 	LPI_PINGROUP(4, 10, swr_rx_data, qua_mi2s_data, _, _),
85 	LPI_PINGROUP(5, 12, swr_tx_data, swr_rx_data, _, _),
86 	LPI_PINGROUP(6, LPI_NO_SLEW, dmic1_clk, i2s1_clk, _,  _),
87 	LPI_PINGROUP(7, LPI_NO_SLEW, dmic1_data, i2s1_ws, _, _),
88 	LPI_PINGROUP(8, LPI_NO_SLEW, dmic2_clk, i2s1_data, _, _),
89 	LPI_PINGROUP(9, LPI_NO_SLEW, dmic2_data, i2s1_data, _, _),
90 	LPI_PINGROUP(10, 16, i2s2_clk, wsa_swr_clk, _, _),
91 	LPI_PINGROUP(11, 18, i2s2_ws, wsa_swr_data, _, _),
92 	LPI_PINGROUP(12, LPI_NO_SLEW, dmic3_clk, i2s2_data, _, _),
93 	LPI_PINGROUP(13, LPI_NO_SLEW, dmic3_data, i2s2_data, _, _),
94 	LPI_PINGROUP(14, 6, swr_tx_data, _, _, _),
95 };
96 
97 static const struct lpi_function sm8350_functions[] = {
98 	LPI_FUNCTION(dmic1_clk),
99 	LPI_FUNCTION(dmic1_data),
100 	LPI_FUNCTION(dmic2_clk),
101 	LPI_FUNCTION(dmic2_data),
102 	LPI_FUNCTION(dmic3_clk),
103 	LPI_FUNCTION(dmic3_data),
104 	LPI_FUNCTION(i2s1_clk),
105 	LPI_FUNCTION(i2s1_data),
106 	LPI_FUNCTION(i2s1_ws),
107 	LPI_FUNCTION(i2s2_clk),
108 	LPI_FUNCTION(i2s2_data),
109 	LPI_FUNCTION(i2s2_ws),
110 	LPI_FUNCTION(qua_mi2s_data),
111 	LPI_FUNCTION(qua_mi2s_sclk),
112 	LPI_FUNCTION(qua_mi2s_ws),
113 	LPI_FUNCTION(swr_rx_clk),
114 	LPI_FUNCTION(swr_rx_data),
115 	LPI_FUNCTION(swr_tx_clk),
116 	LPI_FUNCTION(swr_tx_data),
117 	LPI_FUNCTION(wsa_swr_clk),
118 	LPI_FUNCTION(wsa_swr_data),
119 };
120 
121 static const struct lpi_pinctrl_variant_data sm8350_lpi_data = {
122 	.pins = sm8350_lpi_pins,
123 	.npins = ARRAY_SIZE(sm8350_lpi_pins),
124 	.groups = sm8350_groups,
125 	.ngroups = ARRAY_SIZE(sm8350_groups),
126 	.functions = sm8350_functions,
127 	.nfunctions = ARRAY_SIZE(sm8350_functions),
128 };
129 
130 static const struct of_device_id lpi_pinctrl_of_match[] = {
131 	{
132 	       .compatible = "qcom,sm8350-lpass-lpi-pinctrl",
133 	       .data = &sm8350_lpi_data,
134 	},
135 	{ }
136 };
137 MODULE_DEVICE_TABLE(of, lpi_pinctrl_of_match);
138 
139 static struct platform_driver lpi_pinctrl_driver = {
140 	.driver = {
141 		   .name = "qcom-sm8350-lpass-lpi-pinctrl",
142 		   .of_match_table = lpi_pinctrl_of_match,
143 	},
144 	.probe = lpi_pinctrl_probe,
145 	.remove_new = lpi_pinctrl_remove,
146 };
147 module_platform_driver(lpi_pinctrl_driver);
148 
149 MODULE_AUTHOR("Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>");
150 MODULE_DESCRIPTION("QTI SM8350 LPI GPIO pin control driver");
151 MODULE_LICENSE("GPL");
152