linux/arch/mips/pic32/pic32mzda/early_pin.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Joshua Henderson <joshua.henderson@microchip.com>
   4 * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
   5 */
   6#include <asm/io.h>
   7
   8#include "early_pin.h"
   9
  10#define PPS_BASE 0x1f800000
  11
  12/* Input PPS Registers */
  13#define INT1R 0x1404
  14#define INT2R 0x1408
  15#define INT3R 0x140C
  16#define INT4R 0x1410
  17#define T2CKR 0x1418
  18#define T3CKR 0x141C
  19#define T4CKR 0x1420
  20#define T5CKR 0x1424
  21#define T6CKR 0x1428
  22#define T7CKR 0x142C
  23#define T8CKR 0x1430
  24#define T9CKR 0x1434
  25#define IC1R 0x1438
  26#define IC2R 0x143C
  27#define IC3R 0x1440
  28#define IC4R 0x1444
  29#define IC5R 0x1448
  30#define IC6R 0x144C
  31#define IC7R 0x1450
  32#define IC8R 0x1454
  33#define IC9R 0x1458
  34#define OCFAR 0x1460
  35#define U1RXR 0x1468
  36#define U1CTSR 0x146C
  37#define U2RXR 0x1470
  38#define U2CTSR 0x1474
  39#define U3RXR 0x1478
  40#define U3CTSR 0x147C
  41#define U4RXR 0x1480
  42#define U4CTSR 0x1484
  43#define U5RXR 0x1488
  44#define U5CTSR 0x148C
  45#define U6RXR 0x1490
  46#define U6CTSR 0x1494
  47#define SDI1R 0x149C
  48#define SS1R 0x14A0
  49#define SDI2R 0x14A8
  50#define SS2R 0x14AC
  51#define SDI3R 0x14B4
  52#define SS3R 0x14B8
  53#define SDI4R 0x14C0
  54#define SS4R 0x14C4
  55#define SDI5R 0x14CC
  56#define SS5R 0x14D0
  57#define SDI6R 0x14D8
  58#define SS6R 0x14DC
  59#define C1RXR 0x14E0
  60#define C2RXR 0x14E4
  61#define REFCLKI1R 0x14E8
  62#define REFCLKI3R 0x14F0
  63#define REFCLKI4R 0x14F4
  64
  65static const struct
  66{
  67        int function;
  68        int reg;
  69} input_pin_reg[] = {
  70        { IN_FUNC_INT3, INT3R },
  71        { IN_FUNC_T2CK, T2CKR },
  72        { IN_FUNC_T6CK, T6CKR },
  73        { IN_FUNC_IC3, IC3R  },
  74        { IN_FUNC_IC7, IC7R },
  75        { IN_FUNC_U1RX, U1RXR },
  76        { IN_FUNC_U2CTS, U2CTSR },
  77        { IN_FUNC_U5RX, U5RXR },
  78        { IN_FUNC_U6CTS, U6CTSR },
  79        { IN_FUNC_SDI1, SDI1R },
  80        { IN_FUNC_SDI3, SDI3R },
  81        { IN_FUNC_SDI5, SDI5R },
  82        { IN_FUNC_SS6, SS6R },
  83        { IN_FUNC_REFCLKI1, REFCLKI1R },
  84        { IN_FUNC_INT4, INT4R },
  85        { IN_FUNC_T5CK, T5CKR },
  86        { IN_FUNC_T7CK, T7CKR },
  87        { IN_FUNC_IC4, IC4R },
  88        { IN_FUNC_IC8, IC8R },
  89        { IN_FUNC_U3RX, U3RXR },
  90        { IN_FUNC_U4CTS, U4CTSR },
  91        { IN_FUNC_SDI2, SDI2R },
  92        { IN_FUNC_SDI4, SDI4R },
  93        { IN_FUNC_C1RX, C1RXR },
  94        { IN_FUNC_REFCLKI4, REFCLKI4R },
  95        { IN_FUNC_INT2, INT2R },
  96        { IN_FUNC_T3CK, T3CKR },
  97        { IN_FUNC_T8CK, T8CKR },
  98        { IN_FUNC_IC2, IC2R },
  99        { IN_FUNC_IC5, IC5R },
 100        { IN_FUNC_IC9, IC9R },
 101        { IN_FUNC_U1CTS, U1CTSR },
 102        { IN_FUNC_U2RX, U2RXR },
 103        { IN_FUNC_U5CTS, U5CTSR },
 104        { IN_FUNC_SS1, SS1R },
 105        { IN_FUNC_SS3, SS3R },
 106        { IN_FUNC_SS4, SS4R },
 107        { IN_FUNC_SS5, SS5R },
 108        { IN_FUNC_C2RX, C2RXR },
 109        { IN_FUNC_INT1, INT1R },
 110        { IN_FUNC_T4CK, T4CKR },
 111        { IN_FUNC_T9CK, T9CKR },
 112        { IN_FUNC_IC1, IC1R },
 113        { IN_FUNC_IC6, IC6R },
 114        { IN_FUNC_U3CTS, U3CTSR },
 115        { IN_FUNC_U4RX, U4RXR },
 116        { IN_FUNC_U6RX, U6RXR },
 117        { IN_FUNC_SS2, SS2R },
 118        { IN_FUNC_SDI6, SDI6R },
 119        { IN_FUNC_OCFA, OCFAR },
 120        { IN_FUNC_REFCLKI3, REFCLKI3R },
 121};
 122
 123void pic32_pps_input(int function, int pin)
 124{
 125        void __iomem *pps_base = ioremap(PPS_BASE, 0xF4);
 126        int i;
 127
 128        for (i = 0; i < ARRAY_SIZE(input_pin_reg); i++) {
 129                if (input_pin_reg[i].function == function) {
 130                        __raw_writel(pin, pps_base + input_pin_reg[i].reg);
 131                        return;
 132                }
 133        }
 134
 135        iounmap(pps_base);
 136}
 137
 138/* Output PPS Registers */
 139#define RPA14R 0x1538
 140#define RPA15R 0x153C
 141#define RPB0R 0x1540
 142#define RPB1R 0x1544
 143#define RPB2R 0x1548
 144#define RPB3R 0x154C
 145#define RPB5R 0x1554
 146#define RPB6R 0x1558
 147#define RPB7R 0x155C
 148#define RPB8R 0x1560
 149#define RPB9R 0x1564
 150#define RPB10R 0x1568
 151#define RPB14R 0x1578
 152#define RPB15R 0x157C
 153#define RPC1R 0x1584
 154#define RPC2R 0x1588
 155#define RPC3R 0x158C
 156#define RPC4R 0x1590
 157#define RPC13R 0x15B4
 158#define RPC14R 0x15B8
 159#define RPD0R 0x15C0
 160#define RPD1R 0x15C4
 161#define RPD2R 0x15C8
 162#define RPD3R 0x15CC
 163#define RPD4R 0x15D0
 164#define RPD5R 0x15D4
 165#define RPD6R 0x15D8
 166#define RPD7R 0x15DC
 167#define RPD9R 0x15E4
 168#define RPD10R 0x15E8
 169#define RPD11R 0x15EC
 170#define RPD12R 0x15F0
 171#define RPD14R 0x15F8
 172#define RPD15R 0x15FC
 173#define RPE3R 0x160C
 174#define RPE5R 0x1614
 175#define RPE8R 0x1620
 176#define RPE9R 0x1624
 177#define RPF0R 0x1640
 178#define RPF1R 0x1644
 179#define RPF2R 0x1648
 180#define RPF3R 0x164C
 181#define RPF4R 0x1650
 182#define RPF5R 0x1654
 183#define RPF8R 0x1660
 184#define RPF12R 0x1670
 185#define RPF13R 0x1674
 186#define RPG0R 0x1680
 187#define RPG1R 0x1684
 188#define RPG6R 0x1698
 189#define RPG7R 0x169C
 190#define RPG8R 0x16A0
 191#define RPG9R 0x16A4
 192
 193static const struct
 194{
 195        int pin;
 196        int reg;
 197} output_pin_reg[] = {
 198        { OUT_RPD2, RPD2R },
 199        { OUT_RPG8, RPG8R },
 200        { OUT_RPF4, RPF4R },
 201        { OUT_RPD10, RPD10R },
 202        { OUT_RPF1, RPF1R },
 203        { OUT_RPB9, RPB9R },
 204        { OUT_RPB10, RPB10R },
 205        { OUT_RPC14, RPC14R },
 206        { OUT_RPB5, RPB5R },
 207        { OUT_RPC1, RPC1R },
 208        { OUT_RPD14, RPD14R },
 209        { OUT_RPG1, RPG1R },
 210        { OUT_RPA14, RPA14R },
 211        { OUT_RPD6, RPD6R },
 212        { OUT_RPD3, RPD3R },
 213        { OUT_RPG7, RPG7R },
 214        { OUT_RPF5, RPF5R },
 215        { OUT_RPD11, RPD11R },
 216        { OUT_RPF0, RPF0R },
 217        { OUT_RPB1, RPB1R },
 218        { OUT_RPE5, RPE5R },
 219        { OUT_RPC13, RPC13R },
 220        { OUT_RPB3, RPB3R },
 221        { OUT_RPC4, RPC4R },
 222        { OUT_RPD15, RPD15R },
 223        { OUT_RPG0, RPG0R },
 224        { OUT_RPA15, RPA15R },
 225        { OUT_RPD7, RPD7R },
 226        { OUT_RPD9, RPD9R },
 227        { OUT_RPG6, RPG6R },
 228        { OUT_RPB8, RPB8R },
 229        { OUT_RPB15, RPB15R },
 230        { OUT_RPD4, RPD4R },
 231        { OUT_RPB0, RPB0R },
 232        { OUT_RPE3, RPE3R },
 233        { OUT_RPB7, RPB7R },
 234        { OUT_RPF12, RPF12R },
 235        { OUT_RPD12, RPD12R },
 236        { OUT_RPF8, RPF8R },
 237        { OUT_RPC3, RPC3R },
 238        { OUT_RPE9, RPE9R },
 239        { OUT_RPD1, RPD1R },
 240        { OUT_RPG9, RPG9R },
 241        { OUT_RPB14, RPB14R },
 242        { OUT_RPD0, RPD0R },
 243        { OUT_RPB6, RPB6R },
 244        { OUT_RPD5, RPD5R },
 245        { OUT_RPB2, RPB2R },
 246        { OUT_RPF3, RPF3R },
 247        { OUT_RPF13, RPF13R },
 248        { OUT_RPC2, RPC2R },
 249        { OUT_RPE8, RPE8R },
 250        { OUT_RPF2, RPF2R },
 251};
 252
 253void pic32_pps_output(int function, int pin)
 254{
 255        void __iomem *pps_base = ioremap(PPS_BASE, 0x170);
 256        int i;
 257
 258        for (i = 0; i < ARRAY_SIZE(output_pin_reg); i++) {
 259                if (output_pin_reg[i].pin == pin) {
 260                        __raw_writel(function,
 261                                pps_base + output_pin_reg[i].reg);
 262                        return;
 263                }
 264        }
 265
 266        iounmap(pps_base);
 267}
 268