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 65 static 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 }; 122 123 void 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 192 193 static 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 }; 252 253 void 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