drivers/pinctrl/rockchip/pinctrl-rk3288.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 static struct rockchip_mux_route_data rk3288_mux_route_data[] = {
  15         {
  16                 /* edphdmi_cecinoutt1 */
  17                 .bank_num = 7,
  18                 .pin = 16,
  19                 .func = 2,
  20                 .route_offset = 0x264,
  21                 .route_val = BIT(16 + 12) | BIT(12),
  22         }, {
  23                 /* edphdmi_cecinout */
  24                 .bank_num = 7,
  25                 .pin = 23,
  26                 .func = 4,
  27                 .route_offset = 0x264,
  28                 .route_val = BIT(16 + 12),
  29         },
  30 };
  31
  32 #define RK3288_PULL_OFFSET              0x140
  33 #define RK3288_PULL_PMU_OFFSET          0x64
  34
  35 static void rk3288_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
  36                                          int pin_num, struct regmap **regmap,
  37                                          int *reg, u8 *bit)
  38 {
  39         struct rockchip_pinctrl_priv *priv = bank->priv;
  40
  41         /* The first 24 pins of the first bank are located in PMU */
  42         if (bank->bank_num == 0) {
  43                 *regmap = priv->regmap_pmu;
  44                 *reg = RK3288_PULL_PMU_OFFSET;
  45
  46                 *reg += ((pin_num / ROCKCHIP_PULL_PINS_PER_REG) * 4);
  47                 *bit = pin_num % ROCKCHIP_PULL_PINS_PER_REG;
  48                 *bit *= ROCKCHIP_PULL_BITS_PER_PIN;
  49         } else {
  50                 *regmap = priv->regmap_base;
  51                 *reg = RK3288_PULL_OFFSET;
  52
  53                 /* correct the offset, as we're starting with the 2nd bank */
  54                 *reg -= 0x10;
  55                 *reg += bank->bank_num * ROCKCHIP_PULL_BANK_STRIDE;
  56                 *reg += ((pin_num / ROCKCHIP_PULL_PINS_PER_REG) * 4);
  57
  58                 *bit = (pin_num % ROCKCHIP_PULL_PINS_PER_REG);
  59                 *bit *= ROCKCHIP_PULL_BITS_PER_PIN;
  60         }
  61 }
  62
  63 #define RK3288_DRV_PMU_OFFSET           0x70
  64 #define RK3288_DRV_GRF_OFFSET           0x1c0
  65
  66 static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
  67                                         int pin_num, struct regmap **regmap,
  68                                         int *reg, u8 *bit)
  69 {
  70         struct rockchip_pinctrl_priv *priv = bank->priv;
  71
  72         /* The first 24 pins of the first bank are located in PMU */
  73         if (bank->bank_num == 0) {
  74                 *regmap = priv->regmap_pmu;
  75                 *reg = RK3288_DRV_PMU_OFFSET;
  76
  77                 *reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4);
  78                 *bit = pin_num % ROCKCHIP_DRV_PINS_PER_REG;
  79                 *bit *= ROCKCHIP_DRV_BITS_PER_PIN;
  80         } else {
  81                 *regmap = priv->regmap_base;
  82                 *reg = RK3288_DRV_GRF_OFFSET;
  83
  84                 /* correct the offset, as we're starting with the 2nd bank */
  85                 *reg -= 0x10;
  86                 *reg += bank->bank_num * ROCKCHIP_DRV_BANK_STRIDE;
  87                 *reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4);
  88
  89                 *bit = (pin_num % ROCKCHIP_DRV_PINS_PER_REG);
  90                 *bit *= ROCKCHIP_DRV_BITS_PER_PIN;
  91         }
  92 }
  93
  94 static struct rockchip_pin_bank rk3288_pin_banks[] = {
  95         PIN_BANK_IOMUX_FLAGS(0, 24, "gpio0", IOMUX_SOURCE_PMU,
  96                                              IOMUX_SOURCE_PMU,
  97                                              IOMUX_SOURCE_PMU,
  98                                              IOMUX_UNROUTED
  99                             ),
 100         PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_UNROUTED,
 101                                              IOMUX_UNROUTED,
 102                                              IOMUX_UNROUTED,
 103                                              0
 104                             ),
 105         PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, IOMUX_UNROUTED),
 106         PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, IOMUX_WIDTH_4BIT),
 107         PIN_BANK_IOMUX_FLAGS(4, 32, "gpio4", IOMUX_WIDTH_4BIT,
 108                                              IOMUX_WIDTH_4BIT,
 109                                              0,
 110                                              0
 111                             ),
 112         PIN_BANK_IOMUX_FLAGS(5, 32, "gpio5", IOMUX_UNROUTED,
 113                                              0,
 114                                              0,
 115                                              IOMUX_UNROUTED
 116                             ),
 117         PIN_BANK_IOMUX_FLAGS(6, 32, "gpio6", 0, 0, 0, IOMUX_UNROUTED),
 118         PIN_BANK_IOMUX_FLAGS(7, 32, "gpio7", 0,
 119                                              0,
 120                                              IOMUX_WIDTH_4BIT,
 121                                              IOMUX_UNROUTED
 122                             ),
 123         PIN_BANK(8, 16, "gpio8"),
 124 };
 125
 126 static struct rockchip_pin_ctrl rk3288_pin_ctrl = {
 127                 .pin_banks              = rk3288_pin_banks,
 128                 .nr_banks               = ARRAY_SIZE(rk3288_pin_banks),
 129                 .label                  = "RK3288-GPIO",
 130                 .type                   = RK3288,
 131                 .grf_mux_offset         = 0x0,
 132                 .pmu_mux_offset         = 0x84,
 133                 .iomux_routes           = rk3288_mux_route_data,
 134                 .niomux_routes          = ARRAY_SIZE(rk3288_mux_route_data),
 135                 .pull_calc_reg          = rk3288_calc_pull_reg_and_bit,
 136                 .drv_calc_reg           = rk3288_calc_drv_reg_and_bit,
 137 };
 138
 139 static const struct udevice_id rk3288_pinctrl_ids[] = {
 140         {
 141                 .compatible = "rockchip,rk3288-pinctrl",
 142                 .data = (ulong)&rk3288_pin_ctrl
 143         },
 144         { }
 145 };
 146
 147 U_BOOT_DRIVER(pinctrl_rk3288) = {
 148         .name           = "rockchip_rk3288_pinctrl",
 149         .id             = UCLASS_PINCTRL,
 150         .of_match       = rk3288_pinctrl_ids,
 151         .priv_auto_alloc_size = sizeof(struct rockchip_pinctrl_priv),
 152         .ops            = &rockchip_pinctrl_ops,
 153 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 154         .bind           = dm_scan_fdt_dev,
 155 #endif
 156         .probe          = rockchip_pinctrl_probe,
 157 };