drivers/pinctrl/mediatek/pinctrl-mt6397.c

   1 /*
   2  * Copyright (c) 2015 MediaTek Inc.
   3  * Author: Hongzhou.Yang <hongzhou.yang@mediatek.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/of.h>
  18 #include <linux/of_device.h>
  19 #include <linux/pinctrl/pinctrl.h>
  20 #include <linux/pinctrl/pinconf-generic.h>
  21 #include <linux/mfd/mt6397/core.h>
  22
  23 #include "pinctrl-mtk-common.h"
  24 #include "pinctrl-mtk-mt6397.h"
  25
  26 #define MT6397_PIN_REG_BASE  0xc000
  27
  28 static const struct mtk_pinctrl_devdata mt6397_pinctrl_data = {
  29         .pins = mtk_pins_mt6397,
  30         .npins = ARRAY_SIZE(mtk_pins_mt6397),
  31         .dir_offset = (MT6397_PIN_REG_BASE + 0x000),
  32         .ies_offset = MTK_PINCTRL_NOT_SUPPORT,
  33         .smt_offset = MTK_PINCTRL_NOT_SUPPORT,
  34         .pullen_offset = (MT6397_PIN_REG_BASE + 0x020),
  35         .pullsel_offset = (MT6397_PIN_REG_BASE + 0x040),
  36         .dout_offset = (MT6397_PIN_REG_BASE + 0x080),
  37         .din_offset = (MT6397_PIN_REG_BASE + 0x0a0),
  38         .pinmux_offset = (MT6397_PIN_REG_BASE + 0x0c0),
  39         .type1_start = 41,
  40         .type1_end = 41,
  41         .port_shf = 3,
  42         .port_mask = 0x3,
  43         .port_align = 2,
  44 };
  45
  46 static int mt6397_pinctrl_probe(struct platform_device *pdev)
  47 {
  48         struct mt6397_chip *mt6397;
  49
  50         mt6397 = dev_get_drvdata(pdev->dev.parent);
  51         return mtk_pctrl_init(pdev, &mt6397_pinctrl_data, mt6397->regmap);
  52 }
  53
  54 static const struct of_device_id mt6397_pctrl_match[] = {
  55         { .compatible = "mediatek,mt6397-pinctrl", },
  56         { }
  57 };
  58 MODULE_DEVICE_TABLE(of, mt6397_pctrl_match);
  59
  60 static struct platform_driver mtk_pinctrl_driver = {
  61         .probe = mt6397_pinctrl_probe,
  62         .driver = {
  63                 .name = "mediatek-mt6397-pinctrl",
  64                 .of_match_table = mt6397_pctrl_match,
  65         },
  66 };
  67
  68 static int __init mtk_pinctrl_init(void)
  69 {
  70         return platform_driver_register(&mtk_pinctrl_driver);
  71 }
  72
  73 module_init(mtk_pinctrl_init);
  74
  75 MODULE_LICENSE("GPL v2");
  76 MODULE_DESCRIPTION("MediaTek MT6397 Pinctrl Driver");
  77 MODULE_AUTHOR("Hongzhou Yang <hongzhou.yang@mediatek.com>");