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
23static const struct mtk_pin_field_calc mt6797_pin_mode_range[] = {
24 PIN_FIELD(0, 261, 0x300, 0x10, 0, 4),
25};
26
27static const struct mtk_pin_field_calc mt6797_pin_dir_range[] = {
28 PIN_FIELD(0, 261, 0x0, 0x10, 0, 1),
29};
30
31static const struct mtk_pin_field_calc mt6797_pin_di_range[] = {
32 PIN_FIELD(0, 261, 0x200, 0x10, 0, 1),
33};
34
35static const struct mtk_pin_field_calc mt6797_pin_do_range[] = {
36 PIN_FIELD(0, 261, 0x100, 0x10, 0, 1),
37};
38
39static 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
46static const char * const mt6797_pinctrl_register_base_names[] = {
47 "gpio", "iocfgl", "iocfgb", "iocfgr", "iocfgt",
48};
49
50static 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
60static const struct of_device_id mt6797_pinctrl_of_match[] = {
61 { .compatible = "mediatek,mt6797-pinctrl", .data = &mt6797_data },
62 { }
63};
64
65static 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
73static int __init mt6797_pinctrl_init(void)
74{
75 return platform_driver_register(&mt6797_pinctrl_driver);
76}
77arch_initcall(mt6797_pinctrl_init);
78

source code of linux/drivers/pinctrl/mediatek/pinctrl-mt6797.c