drivers/pinctrl/rockchip/pinctrl-rk3036.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2019 Rockchip Electronics Co., Ltd
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <dm/pinctrl.h>
   9 #include <regmap.h>
  10 #include <syscon.h>
  11
  12 #include "pinctrl-rockchip.h"
  13
  14 #define RK3036_PULL_OFFSET              0x118
  15 #define RK3036_PULL_PINS_PER_REG        16
  16 #define RK3036_PULL_BANK_STRIDE         8
  17
  18 static void rk3036_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
  19                                          int pin_num, struct regmap **regmap,
  20                                          int *reg, u8 *bit)
  21 {
  22         struct rockchip_pinctrl_priv *priv = bank->priv;
  23
  24         *regmap = priv->regmap_base;
  25         *reg = RK3036_PULL_OFFSET;
  26         *reg += bank->bank_num * RK3036_PULL_BANK_STRIDE;
  27         *reg += (pin_num / RK3036_PULL_PINS_PER_REG) * 4;
  28
  29         *bit = pin_num % RK3036_PULL_PINS_PER_REG;
  30 };
  31
  32 static struct rockchip_pin_bank rk3036_pin_banks[] = {
  33         PIN_BANK(0, 32, "gpio0"),
  34         PIN_BANK(1, 32, "gpio1"),
  35         PIN_BANK(2, 32, "gpio2"),
  36 };
  37
  38 static struct rockchip_pin_ctrl rk3036_pin_ctrl = {
  39                 .pin_banks              = rk3036_pin_banks,
  40                 .nr_banks               = ARRAY_SIZE(rk3036_pin_banks),
  41                 .label                  = "RK3036-GPIO",
  42                 .type                   = RK3036,
  43                 .grf_mux_offset         = 0xa8,
  44                 .pull_calc_reg          = rk3036_calc_pull_reg_and_bit,
  45 };
  46
  47 static const struct udevice_id rk3036_pinctrl_ids[] = {
  48         {
  49                 .compatible = "rockchip,rk3036-pinctrl",
  50                 .data = (ulong)&rk3036_pin_ctrl
  51         },
  52         {}
  53 };
  54
  55 U_BOOT_DRIVER(pinctrl_rockchip) = {
  56         .name           = "rk3036-pinctrl",
  57         .id             = UCLASS_PINCTRL,
  58         .of_match       = rk3036_pinctrl_ids,
  59         .priv_auto_alloc_size = sizeof(struct rockchip_pinctrl_priv),
  60         .ops            = &rockchip_pinctrl_ops,
  61 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
  62         .bind           = dm_scan_fdt_dev,
  63 #endif
  64         .probe          = rockchip_pinctrl_probe,
  65 };