drivers/pinctrl/mediatek/pinctrl-mt6797.c

   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", },
  62         { }
  63 };
  64
  65 static int mt6797_pinctrl_probe(struct platform_device *pdev)
  66 {
  67         return mtk_paris_pinctrl_probe(pdev, &mt6797_data);
  68 }
  69
  70 static struct platform_driver mt6797_pinctrl_driver = {
  71         .driver = {
  72                 .name = "mt6797-pinctrl",
  73                 .of_match_table = mt6797_pinctrl_of_match,
  74         },
  75         .probe = mt6797_pinctrl_probe,
  76 };
  77
  78 static int __init mt6797_pinctrl_init(void)
  79 {
  80         return platform_driver_register(&mt6797_pinctrl_driver);
  81 }
  82 arch_initcall(mt6797_pinctrl_init);