1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Based on pinctrl-mt6765.c
4  *
5  * Copyright (C) 2018 MediaTek Inc.
6  *
7  * Author: ZH Chen <zh.chen@mediatek.com>
8  *
9  * Copyright (C) Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
10  *
11  */
12 
13 #include "pinctrl-mtk-mt6797.h"
14 #include "pinctrl-paris.h"
15 
16 /*
17  * MT6797 have multiple bases to program pin configuration listed as the below:
18  * gpio:0x10005000, iocfg[l]:0x10002000, iocfg[b]:0x10002400,
19  * iocfg[r]:0x10002800, iocfg[t]:0x10002C00.
20  * _i_base could be used to indicate what base the pin should be mapped into.
21  */
22 
23 static const struct mtk_pin_field_calc mt6797_pin_mode_range[] = {
24 	PIN_FIELD(0, 261, 0x300, 0x10, 0, 4),
25 };
26 
27 static const struct mtk_pin_field_calc mt6797_pin_dir_range[] = {
28 	PIN_FIELD(0, 261, 0x0, 0x10, 0, 1),
29 };
30 
31 static const struct mtk_pin_field_calc mt6797_pin_di_range[] = {
32 	PIN_FIELD(0, 261, 0x200, 0x10, 0, 1),
33 };
34 
35 static const struct mtk_pin_field_calc mt6797_pin_do_range[] = {
36 	PIN_FIELD(0, 261, 0x100, 0x10, 0, 1),
37 };
38 
39 static const struct mtk_pin_reg_calc mt6797_reg_cals[PINCTRL_PIN_REG_MAX] = {
40 	[PINCTRL_PIN_REG_MODE] = MTK_RANGE(mt6797_pin_mode_range),
41 	[PINCTRL_PIN_REG_DIR] = MTK_RANGE(mt6797_pin_dir_range),
42 	[PINCTRL_PIN_REG_DI] = MTK_RANGE(mt6797_pin_di_range),
43 	[PINCTRL_PIN_REG_DO] = MTK_RANGE(mt6797_pin_do_range),
44 };
45 
46 static const char * const mt6797_pinctrl_register_base_names[] = {
47 	"gpio", "iocfgl", "iocfgb", "iocfgr", "iocfgt",
48 };
49 
50 static const struct mtk_pin_soc mt6797_data = {
51 	.reg_cal = mt6797_reg_cals,
52 	.pins = mtk_pins_mt6797,
53 	.npins = ARRAY_SIZE(mtk_pins_mt6797),
54 	.ngrps = ARRAY_SIZE(mtk_pins_mt6797),
55 	.gpio_m = 0,
56 	.base_names = mt6797_pinctrl_register_base_names,
57 	.nbase_names = ARRAY_SIZE(mt6797_pinctrl_register_base_names),
58 };
59 
60 static const struct of_device_id mt6797_pinctrl_of_match[] = {
61 	{ .compatible = "mediatek,mt6797-pinctrl", .data = &mt6797_data },
62 	{ }
63 };
64 
65 static struct platform_driver mt6797_pinctrl_driver = {
66 	.driver = {
67 		.name = "mt6797-pinctrl",
68 		.of_match_table = mt6797_pinctrl_of_match,
69 	},
70 	.probe = mtk_paris_pinctrl_probe,
71 };
72 
73 static int __init mt6797_pinctrl_init(void)
74 {
75 	return platform_driver_register(&mt6797_pinctrl_driver);
76 }
77 arch_initcall(mt6797_pinctrl_init);
78