drivers/pinctrl/pinctrl-tb10x.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Abilis Systems TB10x pin control driver
   4  *
   5  * Copyright (C) Abilis Systems 2012
   6  *
   7  * Author: Christian Ruppert <christian.ruppert@abilis.com>
   8  */
   9
  10 #include <linux/stringify.h>
  11 #include <linux/pinctrl/pinctrl.h>
  12 #include <linux/pinctrl/pinmux.h>
  13 #include <linux/pinctrl/machine.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/module.h>
  16 #include <linux/mutex.h>
  17 #include <linux/err.h>
  18 #include <linux/io.h>
  19 #include <linux/of.h>
  20 #include <linux/slab.h>
  21
  22 #include "pinctrl-utils.h"
  23
  24 #define TB10X_PORT1 (0)
  25 #define TB10X_PORT2 (16)
  26 #define TB10X_PORT3 (32)
  27 #define TB10X_PORT4 (48)
  28 #define TB10X_PORT5 (128)
  29 #define TB10X_PORT6 (64)
  30 #define TB10X_PORT7 (80)
  31 #define TB10X_PORT8 (96)
  32 #define TB10X_PORT9 (112)
  33 #define TB10X_GPIOS (256)
  34
  35 #define PCFG_PORT_BITWIDTH (2)
  36 #define PCFG_PORT_MASK(PORT) \
  37         (((1 << PCFG_PORT_BITWIDTH) - 1) << (PCFG_PORT_BITWIDTH * (PORT)))
  38
  39 static const struct pinctrl_pin_desc tb10x_pins[] = {
  40         /* Port 1 */
  41         PINCTRL_PIN(TB10X_PORT1 +  0, "MICLK_S0"),
  42         PINCTRL_PIN(TB10X_PORT1 +  1, "MISTRT_S0"),
  43         PINCTRL_PIN(TB10X_PORT1 +  2, "MIVAL_S0"),
  44         PINCTRL_PIN(TB10X_PORT1 +  3, "MDI_S0"),
  45         PINCTRL_PIN(TB10X_PORT1 +  4, "GPIOA0"),
  46         PINCTRL_PIN(TB10X_PORT1 +  5, "GPIOA1"),
  47         PINCTRL_PIN(TB10X_PORT1 +  6, "GPIOA2"),
  48         PINCTRL_PIN(TB10X_PORT1 +  7, "MDI_S1"),
  49         PINCTRL_PIN(TB10X_PORT1 +  8, "MIVAL_S1"),
  50         PINCTRL_PIN(TB10X_PORT1 +  9, "MISTRT_S1"),
  51         PINCTRL_PIN(TB10X_PORT1 + 10, "MICLK_S1"),
  52         /* Port 2 */
  53         PINCTRL_PIN(TB10X_PORT2 +  0, "MICLK_S2"),
  54         PINCTRL_PIN(TB10X_PORT2 +  1, "MISTRT_S2"),
  55         PINCTRL_PIN(TB10X_PORT2 +  2, "MIVAL_S2"),
  56         PINCTRL_PIN(TB10X_PORT2 +  3, "MDI_S2"),
  57         PINCTRL_PIN(TB10X_PORT2 +  4, "GPIOC0"),
  58         PINCTRL_PIN(TB10X_PORT2 +  5, "GPIOC1"),
  59         PINCTRL_PIN(TB10X_PORT2 +  6, "GPIOC2"),
  60         PINCTRL_PIN(TB10X_PORT2 +  7, "MDI_S3"),
  61         PINCTRL_PIN(TB10X_PORT2 +  8, "MIVAL_S3"),
  62         PINCTRL_PIN(TB10X_PORT2 +  9, "MISTRT_S3"),
  63         PINCTRL_PIN(TB10X_PORT2 + 10, "MICLK_S3"),
  64         /* Port 3 */
  65         PINCTRL_PIN(TB10X_PORT3 +  0, "MICLK_S4"),
  66         PINCTRL_PIN(TB10X_PORT3 +  1, "MISTRT_S4"),
  67         PINCTRL_PIN(TB10X_PORT3 +  2, "MIVAL_S4"),
  68         PINCTRL_PIN(TB10X_PORT3 +  3, "MDI_S4"),
  69         PINCTRL_PIN(TB10X_PORT3 +  4, "GPIOE0"),
  70         PINCTRL_PIN(TB10X_PORT3 +  5, "GPIOE1"),
  71         PINCTRL_PIN(TB10X_PORT3 +  6, "GPIOE2"),
  72         PINCTRL_PIN(TB10X_PORT3 +  7, "MDI_S5"),
  73         PINCTRL_PIN(TB10X_PORT3 +  8, "MIVAL_S5"),
  74         PINCTRL_PIN(TB10X_PORT3 +  9, "MISTRT_S5"),
  75         PINCTRL_PIN(TB10X_PORT3 + 10, "MICLK_S5"),
  76         /* Port 4 */
  77         PINCTRL_PIN(TB10X_PORT4 +  0, "MICLK_S6"),
  78         PINCTRL_PIN(TB10X_PORT4 +  1, "MISTRT_S6"),
  79         PINCTRL_PIN(TB10X_PORT4 +  2, "MIVAL_S6"),
  80         PINCTRL_PIN(TB10X_PORT4 +  3, "MDI_S6"),
  81         PINCTRL_PIN(TB10X_PORT4 +  4, "GPIOG0"),
  82         PINCTRL_PIN(TB10X_PORT4 +  5, "GPIOG1"),
  83         PINCTRL_PIN(TB10X_PORT4 +  6, "GPIOG2"),
  84         PINCTRL_PIN(TB10X_PORT4 +  7, "MDI_S7"),
  85         PINCTRL_PIN(TB10X_PORT4 +  8, "MIVAL_S7"),
  86         PINCTRL_PIN(TB10X_PORT4 +  9, "MISTRT_S7"),
  87         PINCTRL_PIN(TB10X_PORT4 + 10, "MICLK_S7"),
  88         /* Port 5 */
  89         PINCTRL_PIN(TB10X_PORT5 +  0, "PC_CE1N"),
  90         PINCTRL_PIN(TB10X_PORT5 +  1, "PC_CE2N"),
  91         PINCTRL_PIN(TB10X_PORT5 +  2, "PC_REGN"),
  92         PINCTRL_PIN(TB10X_PORT5 +  3, "PC_INPACKN"),
  93         PINCTRL_PIN(TB10X_PORT5 +  4, "PC_OEN"),
  94         PINCTRL_PIN(TB10X_PORT5 +  5, "PC_WEN"),
  95         PINCTRL_PIN(TB10X_PORT5 +  6, "PC_IORDN"),
  96         PINCTRL_PIN(TB10X_PORT5 +  7, "PC_IOWRN"),
  97         PINCTRL_PIN(TB10X_PORT5 +  8, "PC_RDYIRQN"),
  98         PINCTRL_PIN(TB10X_PORT5 +  9, "PC_WAITN"),
  99         PINCTRL_PIN(TB10X_PORT5 + 10, "PC_A0"),
 100         PINCTRL_PIN(TB10X_PORT5 + 11, "PC_A1"),
 101         PINCTRL_PIN(TB10X_PORT5 + 12, "PC_A2"),
 102         PINCTRL_PIN(TB10X_PORT5 + 13, "PC_A3"),
 103         PINCTRL_PIN(TB10X_PORT5 + 14, "PC_A4"),
 104         PINCTRL_PIN(TB10X_PORT5 + 15, "PC_A5"),
 105         PINCTRL_PIN(TB10X_PORT5 + 16, "PC_A6"),
 106         PINCTRL_PIN(TB10X_PORT5 + 17, "PC_A7"),
 107         PINCTRL_PIN(TB10X_PORT5 + 18, "PC_A8"),
 108         PINCTRL_PIN(TB10X_PORT5 + 19, "PC_A9"),
 109         PINCTRL_PIN(TB10X_PORT5 + 20, "PC_A10"),
 110         PINCTRL_PIN(TB10X_PORT5 + 21, "PC_A11"),
 111         PINCTRL_PIN(TB10X_PORT5 + 22, "PC_A12"),
 112         PINCTRL_PIN(TB10X_PORT5 + 23, "PC_A13"),
 113         PINCTRL_PIN(TB10X_PORT5 + 24, "PC_A14"),
 114         PINCTRL_PIN(TB10X_PORT5 + 25, "PC_D0"),
 115         PINCTRL_PIN(TB10X_PORT5 + 26, "PC_D1"),
 116         PINCTRL_PIN(TB10X_PORT5 + 27, "PC_D2"),
 117         PINCTRL_PIN(TB10X_PORT5 + 28, "PC_D3"),
 118         PINCTRL_PIN(TB10X_PORT5 + 29, "PC_D4"),
 119         PINCTRL_PIN(TB10X_PORT5 + 30, "PC_D5"),
 120         PINCTRL_PIN(TB10X_PORT5 + 31, "PC_D6"),
 121         PINCTRL_PIN(TB10X_PORT5 + 32, "PC_D7"),
 122         PINCTRL_PIN(TB10X_PORT5 + 33, "PC_MOSTRT"),
 123         PINCTRL_PIN(TB10X_PORT5 + 34, "PC_MOVAL"),
 124         PINCTRL_PIN(TB10X_PORT5 + 35, "PC_MDO0"),
 125         PINCTRL_PIN(TB10X_PORT5 + 36, "PC_MDO1"),
 126         PINCTRL_PIN(TB10X_PORT5 + 37, "PC_MDO2"),
 127         PINCTRL_PIN(TB10X_PORT5 + 38, "PC_MDO3"),
 128         PINCTRL_PIN(TB10X_PORT5 + 39, "PC_MDO4"),
 129         PINCTRL_PIN(TB10X_PORT5 + 40, "PC_MDO5"),
 130         PINCTRL_PIN(TB10X_PORT5 + 41, "PC_MDO6"),
 131         PINCTRL_PIN(TB10X_PORT5 + 42, "PC_MDO7"),
 132         PINCTRL_PIN(TB10X_PORT5 + 43, "PC_MISTRT"),
 133         PINCTRL_PIN(TB10X_PORT5 + 44, "PC_MIVAL"),
 134         PINCTRL_PIN(TB10X_PORT5 + 45, "PC_MDI0"),
 135         PINCTRL_PIN(TB10X_PORT5 + 46, "PC_MDI1"),
 136         PINCTRL_PIN(TB10X_PORT5 + 47, "PC_MDI2"),
 137         PINCTRL_PIN(TB10X_PORT5 + 48, "PC_MDI3"),
 138         PINCTRL_PIN(TB10X_PORT5 + 49, "PC_MDI4"),
 139         PINCTRL_PIN(TB10X_PORT5 + 50, "PC_MDI5"),
 140         PINCTRL_PIN(TB10X_PORT5 + 51, "PC_MDI6"),
 141         PINCTRL_PIN(TB10X_PORT5 + 52, "PC_MDI7"),
 142         PINCTRL_PIN(TB10X_PORT5 + 53, "PC_MICLK"),
 143         /* Port 6 */
 144         PINCTRL_PIN(TB10X_PORT6 + 0, "T_MOSTRT_S0"),
 145         PINCTRL_PIN(TB10X_PORT6 + 1, "T_MOVAL_S0"),
 146         PINCTRL_PIN(TB10X_PORT6 + 2, "T_MDO_S0"),
 147         PINCTRL_PIN(TB10X_PORT6 + 3, "T_MOSTRT_S1"),
 148         PINCTRL_PIN(TB10X_PORT6 + 4, "T_MOVAL_S1"),
 149         PINCTRL_PIN(TB10X_PORT6 + 5, "T_MDO_S1"),
 150         PINCTRL_PIN(TB10X_PORT6 + 6, "T_MOSTRT_S2"),
 151         PINCTRL_PIN(TB10X_PORT6 + 7, "T_MOVAL_S2"),
 152         PINCTRL_PIN(TB10X_PORT6 + 8, "T_MDO_S2"),
 153         PINCTRL_PIN(TB10X_PORT6 + 9, "T_MOSTRT_S3"),
 154         /* Port 7 */
 155         PINCTRL_PIN(TB10X_PORT7 + 0, "UART0_TXD"),
 156         PINCTRL_PIN(TB10X_PORT7 + 1, "UART0_RXD"),
 157         PINCTRL_PIN(TB10X_PORT7 + 2, "UART0_CTS"),
 158         PINCTRL_PIN(TB10X_PORT7 + 3, "UART0_RTS"),
 159         PINCTRL_PIN(TB10X_PORT7 + 4, "UART1_TXD"),
 160         PINCTRL_PIN(TB10X_PORT7 + 5, "UART1_RXD"),
 161         PINCTRL_PIN(TB10X_PORT7 + 6, "UART1_CTS"),
 162         PINCTRL_PIN(TB10X_PORT7 + 7, "UART1_RTS"),
 163         /* Port 8 */
 164         PINCTRL_PIN(TB10X_PORT8 + 0, "SPI3_CLK"),
 165         PINCTRL_PIN(TB10X_PORT8 + 1, "SPI3_MISO"),
 166         PINCTRL_PIN(TB10X_PORT8 + 2, "SPI3_MOSI"),
 167         PINCTRL_PIN(TB10X_PORT8 + 3, "SPI3_SSN"),
 168         /* Port 9 */
 169         PINCTRL_PIN(TB10X_PORT9 + 0, "SPI1_CLK"),
 170         PINCTRL_PIN(TB10X_PORT9 + 1, "SPI1_MISO"),
 171         PINCTRL_PIN(TB10X_PORT9 + 2, "SPI1_MOSI"),
 172         PINCTRL_PIN(TB10X_PORT9 + 3, "SPI1_SSN0"),
 173         PINCTRL_PIN(TB10X_PORT9 + 4, "SPI1_SSN1"),
 174         /* Unmuxed GPIOs */
 175         PINCTRL_PIN(TB10X_GPIOS +  0, "GPIOB0"),
 176         PINCTRL_PIN(TB10X_GPIOS +  1, "GPIOB1"),
 177
 178         PINCTRL_PIN(TB10X_GPIOS +  2, "GPIOD0"),
 179         PINCTRL_PIN(TB10X_GPIOS +  3, "GPIOD1"),
 180
 181         PINCTRL_PIN(TB10X_GPIOS +  4, "GPIOF0"),
 182         PINCTRL_PIN(TB10X_GPIOS +  5, "GPIOF1"),
 183
 184         PINCTRL_PIN(TB10X_GPIOS +  6, "GPIOH0"),
 185         PINCTRL_PIN(TB10X_GPIOS +  7, "GPIOH1"),
 186
 187         PINCTRL_PIN(TB10X_GPIOS +  8, "GPIOI0"),
 188         PINCTRL_PIN(TB10X_GPIOS +  9, "GPIOI1"),
 189         PINCTRL_PIN(TB10X_GPIOS + 10, "GPIOI2"),
 190         PINCTRL_PIN(TB10X_GPIOS + 11, "GPIOI3"),
 191         PINCTRL_PIN(TB10X_GPIOS + 12, "GPIOI4"),
 192         PINCTRL_PIN(TB10X_GPIOS + 13, "GPIOI5"),
 193         PINCTRL_PIN(TB10X_GPIOS + 14, "GPIOI6"),
 194         PINCTRL_PIN(TB10X_GPIOS + 15, "GPIOI7"),
 195         PINCTRL_PIN(TB10X_GPIOS + 16, "GPIOI8"),
 196         PINCTRL_PIN(TB10X_GPIOS + 17, "GPIOI9"),
 197         PINCTRL_PIN(TB10X_GPIOS + 18, "GPIOI10"),
 198         PINCTRL_PIN(TB10X_GPIOS + 19, "GPIOI11"),
 199
 200         PINCTRL_PIN(TB10X_GPIOS + 20, "GPION0"),
 201         PINCTRL_PIN(TB10X_GPIOS + 21, "GPION1"),
 202         PINCTRL_PIN(TB10X_GPIOS + 22, "GPION2"),
 203         PINCTRL_PIN(TB10X_GPIOS + 23, "GPION3"),
 204 #define MAX_PIN (TB10X_GPIOS + 24)
 205         PINCTRL_PIN(MAX_PIN,  "GPION4"),
 206 };
 207
 208
 209 /* Port 1 */
 210 static const unsigned mis0_pins[]  = {  TB10X_PORT1 + 0, TB10X_PORT1 + 1,
 211                                         TB10X_PORT1 + 2, TB10X_PORT1 + 3};
 212 static const unsigned gpioa_pins[] = {  TB10X_PORT1 + 4, TB10X_PORT1 + 5,
 213                                         TB10X_PORT1 + 6};
 214 static const unsigned mis1_pins[]  = {  TB10X_PORT1 + 7, TB10X_PORT1 + 8,
 215                                         TB10X_PORT1 + 9, TB10X_PORT1 + 10};
 216 static const unsigned mip1_pins[]  = {  TB10X_PORT1 + 0, TB10X_PORT1 + 1,
 217                                         TB10X_PORT1 + 2, TB10X_PORT1 + 3,
 218                                         TB10X_PORT1 + 4, TB10X_PORT1 + 5,
 219                                         TB10X_PORT1 + 6, TB10X_PORT1 + 7,
 220                                         TB10X_PORT1 + 8, TB10X_PORT1 + 9,
 221                                         TB10X_PORT1 + 10};
 222
 223 /* Port 2 */
 224 static const unsigned mis2_pins[]  = {  TB10X_PORT2 + 0, TB10X_PORT2 + 1,
 225                                         TB10X_PORT2 + 2, TB10X_PORT2 + 3};
 226 static const unsigned gpioc_pins[] = {  TB10X_PORT2 + 4, TB10X_PORT2 + 5,
 227                                         TB10X_PORT2 + 6};
 228 static const unsigned mis3_pins[]  = {  TB10X_PORT2 + 7, TB10X_PORT2 + 8,
 229                                         TB10X_PORT2 + 9, TB10X_PORT2 + 10};
 230 static const unsigned mip3_pins[]  = {  TB10X_PORT2 + 0, TB10X_PORT2 + 1,
 231                                         TB10X_PORT2 + 2, TB10X_PORT2 + 3,
 232                                         TB10X_PORT2 + 4, TB10X_PORT2 + 5,
 233                                         TB10X_PORT2 + 6, TB10X_PORT2 + 7,
 234                                         TB10X_PORT2 + 8, TB10X_PORT2 + 9,
 235                                         TB10X_PORT2 + 10};
 236
 237 /* Port 3 */
 238 static const unsigned mis4_pins[]  = {  TB10X_PORT3 + 0, TB10X_PORT3 + 1,
 239                                         TB10X_PORT3 + 2, TB10X_PORT3 + 3};
 240 static const unsigned gpioe_pins[] = {  TB10X_PORT3 + 4, TB10X_PORT3 + 5,
 241                                         TB10X_PORT3 + 6};
 242 static const unsigned mis5_pins[]  = {  TB10X_PORT3 + 7, TB10X_PORT3 + 8,
 243                                         TB10X_PORT3 + 9, TB10X_PORT3 + 10};
 244 static const unsigned mip5_pins[]  = {  TB10X_PORT3 + 0, TB10X_PORT3 + 1,
 245                                         TB10X_PORT3 + 2, TB10X_PORT3 + 3,
 246                                         TB10X_PORT3 + 4, TB10X_PORT3 + 5,
 247                                         TB10X_PORT3 + 6, TB10X_PORT3 + 7,
 248                                         TB10X_PORT3 + 8, TB10X_PORT3 + 9,
 249                                         TB10X_PORT3 + 10};
 250
 251 /* Port 4 */
 252 static const unsigned mis6_pins[]  = {  TB10X_PORT4 + 0, TB10X_PORT4 + 1,
 253                                         TB10X_PORT4 + 2, TB10X_PORT4 + 3};
 254 static const unsigned gpiog_pins[] = {  TB10X_PORT4 + 4, TB10X_PORT4 + 5,
 255                                         TB10X_PORT4 + 6};
 256 static const unsigned mis7_pins[]  = {  TB10X_PORT4 + 7, TB10X_PORT4 + 8,
 257                                         TB10X_PORT4 + 9, TB10X_PORT4 + 10};
 258 static const unsigned mip7_pins[]  = {  TB10X_PORT4 + 0, TB10X_PORT4 + 1,
 259                                         TB10X_PORT4 + 2, TB10X_PORT4 + 3,
 260                                         TB10X_PORT4 + 4, TB10X_PORT4 + 5,
 261                                         TB10X_PORT4 + 6, TB10X_PORT4 + 7,
 262                                         TB10X_PORT4 + 8, TB10X_PORT4 + 9,
 263                                         TB10X_PORT4 + 10};
 264
 265 /* Port 6 */
 266 static const unsigned mop_pins[] = {    TB10X_PORT6 + 0, TB10X_PORT6 + 1,
 267                                         TB10X_PORT6 + 2, TB10X_PORT6 + 3,
 268                                         TB10X_PORT6 + 4, TB10X_PORT6 + 5,
 269                                         TB10X_PORT6 + 6, TB10X_PORT6 + 7,
 270                                         TB10X_PORT6 + 8, TB10X_PORT6 + 9};
 271 static const unsigned mos0_pins[] = {   TB10X_PORT6 + 0, TB10X_PORT6 + 1,
 272                                         TB10X_PORT6 + 2};
 273 static const unsigned mos1_pins[] = {   TB10X_PORT6 + 3, TB10X_PORT6 + 4,
 274                                         TB10X_PORT6 + 5};
 275 static const unsigned mos2_pins[] = {   TB10X_PORT6 + 6, TB10X_PORT6 + 7,
 276                                         TB10X_PORT6 + 8};
 277 static const unsigned mos3_pins[] = {   TB10X_PORT6 + 9};
 278
 279 /* Port 7 */
 280 static const unsigned uart0_pins[] = {  TB10X_PORT7 + 0, TB10X_PORT7 + 1,
 281                                         TB10X_PORT7 + 2, TB10X_PORT7 + 3};
 282 static const unsigned uart1_pins[] = {  TB10X_PORT7 + 4, TB10X_PORT7 + 5,
 283                                         TB10X_PORT7 + 6, TB10X_PORT7 + 7};
 284 static const unsigned gpiol_pins[] = {  TB10X_PORT7 + 0, TB10X_PORT7 + 1,
 285                                         TB10X_PORT7 + 2, TB10X_PORT7 + 3};
 286 static const unsigned gpiom_pins[] = {  TB10X_PORT7 + 4, TB10X_PORT7 + 5,
 287                                         TB10X_PORT7 + 6, TB10X_PORT7 + 7};
 288
 289 /* Port 8 */
 290 static const unsigned spi3_pins[] = {   TB10X_PORT8 + 0, TB10X_PORT8 + 1,
 291                                         TB10X_PORT8 + 2, TB10X_PORT8 + 3};
 292 static const unsigned jtag_pins[] = {   TB10X_PORT8 + 0, TB10X_PORT8 + 1,
 293                                         TB10X_PORT8 + 2, TB10X_PORT8 + 3};
 294
 295 /* Port 9 */
 296 static const unsigned spi1_pins[] = {   TB10X_PORT9 + 0, TB10X_PORT9 + 1,
 297                                         TB10X_PORT9 + 2, TB10X_PORT9 + 3,
 298                                         TB10X_PORT9 + 4};
 299 static const unsigned gpion_pins[] = {  TB10X_PORT9 + 0, TB10X_PORT9 + 1,
 300                                         TB10X_PORT9 + 2, TB10X_PORT9 + 3,
 301                                         TB10X_PORT9 + 4};
 302
 303 /* Port 5 */
 304 static const unsigned gpioj_pins[] = {  TB10X_PORT5 + 0, TB10X_PORT5 + 1,
 305                                         TB10X_PORT5 + 2, TB10X_PORT5 + 3,
 306                                         TB10X_PORT5 + 4, TB10X_PORT5 + 5,
 307                                         TB10X_PORT5 + 6, TB10X_PORT5 + 7,
 308                                         TB10X_PORT5 + 8, TB10X_PORT5 + 9,
 309                                         TB10X_PORT5 + 10, TB10X_PORT5 + 11,
 310                                         TB10X_PORT5 + 12, TB10X_PORT5 + 13,
 311                                         TB10X_PORT5 + 14, TB10X_PORT5 + 15,
 312                                         TB10X_PORT5 + 16, TB10X_PORT5 + 17,
 313                                         TB10X_PORT5 + 18, TB10X_PORT5 + 19,
 314                                         TB10X_PORT5 + 20, TB10X_PORT5 + 21,
 315                                         TB10X_PORT5 + 22, TB10X_PORT5 + 23,
 316                                         TB10X_PORT5 + 24, TB10X_PORT5 + 25,
 317                                         TB10X_PORT5 + 26, TB10X_PORT5 + 27,
 318                                         TB10X_PORT5 + 28, TB10X_PORT5 + 29,
 319                                         TB10X_PORT5 + 30, TB10X_PORT5 + 31};
 320 static const unsigned gpiok_pins[] = {  TB10X_PORT5 + 32, TB10X_PORT5 + 33,
 321                                         TB10X_PORT5 + 34, TB10X_PORT5 + 35,
 322                                         TB10X_PORT5 + 36, TB10X_PORT5 + 37,
 323                                         TB10X_PORT5 + 38, TB10X_PORT5 + 39,
 324                                         TB10X_PORT5 + 40, TB10X_PORT5 + 41,
 325                                         TB10X_PORT5 + 42, TB10X_PORT5 + 43,
 326                                         TB10X_PORT5 + 44, TB10X_PORT5 + 45,
 327                                         TB10X_PORT5 + 46, TB10X_PORT5 + 47,
 328                                         TB10X_PORT5 + 48, TB10X_PORT5 + 49,
 329                                         TB10X_PORT5 + 50, TB10X_PORT5 + 51,
 330                                         TB10X_PORT5 + 52, TB10X_PORT5 + 53};
 331 static const unsigned ciplus_pins[] = { TB10X_PORT5 + 0, TB10X_PORT5 + 1,
 332                                         TB10X_PORT5 + 2, TB10X_PORT5 + 3,
 333                                         TB10X_PORT5 + 4, TB10X_PORT5 + 5,
 334                                         TB10X_PORT5 + 6, TB10X_PORT5 + 7,
 335                                         TB10X_PORT5 + 8, TB10X_PORT5 + 9,
 336                                         TB10X_PORT5 + 10, TB10X_PORT5 + 11,
 337                                         TB10X_PORT5 + 12, TB10X_PORT5 + 13,
 338                                         TB10X_PORT5 + 14, TB10X_PORT5 + 15,
 339                                         TB10X_PORT5 + 16, TB10X_PORT5 + 17,
 340                                         TB10X_PORT5 + 18, TB10X_PORT5 + 19,
 341                                         TB10X_PORT5 + 20, TB10X_PORT5 + 21,
 342                                         TB10X_PORT5 + 22, TB10X_PORT5 + 23,
 343                                         TB10X_PORT5 + 24, TB10X_PORT5 + 25,
 344                                         TB10X_PORT5 + 26, TB10X_PORT5 + 27,
 345                                         TB10X_PORT5 + 28, TB10X_PORT5 + 29,
 346                                         TB10X_PORT5 + 30, TB10X_PORT5 + 31,
 347                                         TB10X_PORT5 + 32, TB10X_PORT5 + 33,
 348                                         TB10X_PORT5 + 34, TB10X_PORT5 + 35,
 349                                         TB10X_PORT5 + 36, TB10X_PORT5 + 37,
 350                                         TB10X_PORT5 + 38, TB10X_PORT5 + 39,
 351                                         TB10X_PORT5 + 40, TB10X_PORT5 + 41,
 352                                         TB10X_PORT5 + 42, TB10X_PORT5 + 43,
 353                                         TB10X_PORT5 + 44, TB10X_PORT5 + 45,
 354                                         TB10X_PORT5 + 46, TB10X_PORT5 + 47,
 355                                         TB10X_PORT5 + 48, TB10X_PORT5 + 49,
 356                                         TB10X_PORT5 + 50, TB10X_PORT5 + 51,
 357                                         TB10X_PORT5 + 52, TB10X_PORT5 + 53};
 358 static const unsigned mcard_pins[] = {  TB10X_PORT5 + 3, TB10X_PORT5 + 10,
 359                                         TB10X_PORT5 + 11, TB10X_PORT5 + 12,
 360                                         TB10X_PORT5 + 22, TB10X_PORT5 + 23,
 361                                         TB10X_PORT5 + 33, TB10X_PORT5 + 35,
 362                                         TB10X_PORT5 + 36, TB10X_PORT5 + 37,
 363                                         TB10X_PORT5 + 38, TB10X_PORT5 + 39,
 364                                         TB10X_PORT5 + 40, TB10X_PORT5 + 41,
 365                                         TB10X_PORT5 + 42, TB10X_PORT5 + 43,
 366                                         TB10X_PORT5 + 45, TB10X_PORT5 + 46,
 367                                         TB10X_PORT5 + 47, TB10X_PORT5 + 48,
 368                                         TB10X_PORT5 + 49, TB10X_PORT5 + 50,
 369                                         TB10X_PORT5 + 51, TB10X_PORT5 + 52,
 370                                         TB10X_PORT5 + 53};
 371 static const unsigned stc0_pins[] = {   TB10X_PORT5 + 34, TB10X_PORT5 + 35,
 372                                         TB10X_PORT5 + 36, TB10X_PORT5 + 37,
 373                                         TB10X_PORT5 + 38, TB10X_PORT5 + 39,
 374                                         TB10X_PORT5 + 40};
 375 static const unsigned stc1_pins[] = {   TB10X_PORT5 + 25, TB10X_PORT5 + 26,
 376                                         TB10X_PORT5 + 27, TB10X_PORT5 + 28,
 377                                         TB10X_PORT5 + 29, TB10X_PORT5 + 30,
 378                                         TB10X_PORT5 + 44};
 379
 380 /* Unmuxed GPIOs */
 381 static const unsigned gpiob_pins[] = {  TB10X_GPIOS + 0, TB10X_GPIOS + 1};
 382 static const unsigned gpiod_pins[] = {  TB10X_GPIOS + 2, TB10X_GPIOS + 3};
 383 static const unsigned gpiof_pins[] = {  TB10X_GPIOS + 4, TB10X_GPIOS + 5};
 384 static const unsigned gpioh_pins[] = {  TB10X_GPIOS + 6, TB10X_GPIOS + 7};
 385 static const unsigned gpioi_pins[] = {  TB10X_GPIOS + 8, TB10X_GPIOS + 9,
 386                                         TB10X_GPIOS + 10, TB10X_GPIOS + 11,
 387                                         TB10X_GPIOS + 12, TB10X_GPIOS + 13,
 388                                         TB10X_GPIOS + 14, TB10X_GPIOS + 15,
 389                                         TB10X_GPIOS + 16, TB10X_GPIOS + 17,
 390                                         TB10X_GPIOS + 18, TB10X_GPIOS + 19};
 391
 392 struct tb10x_pinfuncgrp {
 393         const char *name;
 394         const unsigned int *pins;
 395         const unsigned int pincnt;
 396         const int port;
 397         const unsigned int mode;
 398         const int isgpio;
 399 };
 400 #define DEFPINFUNCGRP(NAME, PORT, MODE, ISGPIO) { \
 401                 .name = __stringify(NAME), \
 402                 .pins = NAME##_pins, .pincnt = ARRAY_SIZE(NAME##_pins), \
 403                 .port = (PORT), .mode = (MODE), \
 404                 .isgpio = (ISGPIO), \
 405         }
 406 static const struct tb10x_pinfuncgrp tb10x_pingroups[] = {
 407         DEFPINFUNCGRP(mis0,   0, 0, 0),
 408         DEFPINFUNCGRP(gpioa,  0, 0, 1),
 409         DEFPINFUNCGRP(mis1,   0, 0, 0),
 410         DEFPINFUNCGRP(mip1,   0, 1, 0),
 411         DEFPINFUNCGRP(mis2,   1, 0, 0),
 412         DEFPINFUNCGRP(gpioc,  1, 0, 1),
 413         DEFPINFUNCGRP(mis3,   1, 0, 0),
 414         DEFPINFUNCGRP(mip3,   1, 1, 0),
 415         DEFPINFUNCGRP(mis4,   2, 0, 0),
 416         DEFPINFUNCGRP(gpioe,  2, 0, 1),
 417         DEFPINFUNCGRP(mis5,   2, 0, 0),
 418         DEFPINFUNCGRP(mip5,   2, 1, 0),
 419         DEFPINFUNCGRP(mis6,   3, 0, 0),
 420         DEFPINFUNCGRP(gpiog,  3, 0, 1),
 421         DEFPINFUNCGRP(mis7,   3, 0, 0),
 422         DEFPINFUNCGRP(mip7,   3, 1, 0),
 423         DEFPINFUNCGRP(gpioj,  4, 0, 1),
 424         DEFPINFUNCGRP(gpiok,  4, 0, 1),
 425         DEFPINFUNCGRP(ciplus, 4, 1, 0),
 426         DEFPINFUNCGRP(mcard,  4, 2, 0),
 427         DEFPINFUNCGRP(stc0,   4, 3, 0),
 428         DEFPINFUNCGRP(stc1,   4, 3, 0),
 429         DEFPINFUNCGRP(mop,    5, 0, 0),
 430         DEFPINFUNCGRP(mos0,   5, 1, 0),
 431         DEFPINFUNCGRP(mos1,   5, 1, 0),
 432         DEFPINFUNCGRP(mos2,   5, 1, 0),
 433         DEFPINFUNCGRP(mos3,   5, 1, 0),
 434         DEFPINFUNCGRP(uart0,  6, 0, 0),
 435         DEFPINFUNCGRP(uart1,  6, 0, 0),
 436         DEFPINFUNCGRP(gpiol,  6, 1, 1),
 437         DEFPINFUNCGRP(gpiom,  6, 1, 1),
 438         DEFPINFUNCGRP(spi3,   7, 0, 0),
 439         DEFPINFUNCGRP(jtag,   7, 1, 0),
 440         DEFPINFUNCGRP(spi1,   8, 0, 0),
 441         DEFPINFUNCGRP(gpion,  8, 1, 1),
 442         DEFPINFUNCGRP(gpiob, -1, 0, 1),
 443         DEFPINFUNCGRP(gpiod, -1, 0, 1),
 444         DEFPINFUNCGRP(gpiof, -1, 0, 1),
 445         DEFPINFUNCGRP(gpioh, -1, 0, 1),
 446         DEFPINFUNCGRP(gpioi, -1, 0, 1),
 447 };
 448 #undef DEFPINFUNCGRP
 449
 450 struct tb10x_of_pinfunc {
 451         const char *name;
 452         const char *group;
 453 };
 454
 455 #define TB10X_PORTS (9)
 456
 457 /**
 458  * struct tb10x_port - state of an I/O port
 459  * @mode: Node this port is currently in.
 460  * @count: Number of enabled functions which require this port to be
 461  *         configured in @mode.
 462  */
 463 struct tb10x_port {
 464         unsigned int mode;
 465         unsigned int count;
 466 };
 467
 468 /**
 469  * struct tb10x_pinctrl - TB10x pin controller internal state
 470  * @pctl: pointer to the pinctrl_dev structure of this pin controller.
 471  * @base: register set base address.
 472  * @pingroups: pointer to an array of the pin groups this driver manages.
 473  * @pinfuncgrpcnt: number of pingroups in @pingroups.
 474  * @pinfuncnt: number of pin functions in @pinfuncs.
 475  * @mutex: mutex for exclusive access to a pin controller's state.
 476  * @ports: current state of each port.
 477  * @gpios: Indicates if a given pin is currently used as GPIO (1) or not (0).
 478  * @pinfuncs: flexible array of pin functions this driver manages.
 479  */
 480 struct tb10x_pinctrl {
 481         struct pinctrl_dev *pctl;
 482         void *base;
 483         const struct tb10x_pinfuncgrp *pingroups;
 484         unsigned int pinfuncgrpcnt;
 485         unsigned int pinfuncnt;
 486         struct mutex mutex;
 487         struct tb10x_port ports[TB10X_PORTS];
 488         DECLARE_BITMAP(gpios, MAX_PIN + 1);
 489         struct tb10x_of_pinfunc pinfuncs[];
 490 };
 491
 492 static inline void tb10x_pinctrl_set_config(struct tb10x_pinctrl *state,
 493                                 unsigned int port, unsigned int mode)
 494 {
 495         u32 pcfg;
 496
 497         if (state->ports[port].count)
 498                 return;
 499
 500         state->ports[port].mode = mode;
 501
 502         pcfg = ioread32(state->base) & ~(PCFG_PORT_MASK(port));
 503         pcfg |= (mode << (PCFG_PORT_BITWIDTH * port)) & PCFG_PORT_MASK(port);
 504         iowrite32(pcfg, state->base);
 505 }
 506
 507 static inline unsigned int tb10x_pinctrl_get_config(
 508                                 struct tb10x_pinctrl *state,
 509                                 unsigned int port)
 510 {
 511         return (ioread32(state->base) & PCFG_PORT_MASK(port))
 512                 >> (PCFG_PORT_BITWIDTH * port);
 513 }
 514
 515 static int tb10x_get_groups_count(struct pinctrl_dev *pctl)
 516 {
 517         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 518         return state->pinfuncgrpcnt;
 519 }
 520
 521 static const char *tb10x_get_group_name(struct pinctrl_dev *pctl, unsigned n)
 522 {
 523         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 524         return state->pingroups[n].name;
 525 }
 526
 527 static int tb10x_get_group_pins(struct pinctrl_dev *pctl, unsigned n,
 528                                 unsigned const **pins,
 529                                 unsigned * const num_pins)
 530 {
 531         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 532
 533         *pins = state->pingroups[n].pins;
 534         *num_pins = state->pingroups[n].pincnt;
 535
 536         return 0;
 537 }
 538
 539 static int tb10x_dt_node_to_map(struct pinctrl_dev *pctl,
 540                                 struct device_node *np_config,
 541                                 struct pinctrl_map **map, unsigned *num_maps)
 542 {
 543         const char *string;
 544         unsigned reserved_maps = 0;
 545         int ret = 0;
 546
 547         if (of_property_read_string(np_config, "abilis,function", &string)) {
 548                 pr_err("%pOF: No abilis,function property in device tree.\n",
 549                         np_config);
 550                 return -EINVAL;
 551         }
 552
 553         *map = NULL;
 554         *num_maps = 0;
 555
 556         ret = pinctrl_utils_reserve_map(pctl, map, &reserved_maps,
 557                                         num_maps, 1);
 558         if (ret)
 559                 goto out;
 560
 561         ret = pinctrl_utils_add_map_mux(pctl, map, &reserved_maps,
 562                                         num_maps, string, np_config->name);
 563
 564 out:
 565         return ret;
 566 }
 567
 568 static const struct pinctrl_ops tb10x_pinctrl_ops = {
 569         .get_groups_count = tb10x_get_groups_count,
 570         .get_group_name   = tb10x_get_group_name,
 571         .get_group_pins   = tb10x_get_group_pins,
 572         .dt_node_to_map   = tb10x_dt_node_to_map,
 573         .dt_free_map      = pinctrl_utils_free_map,
 574 };
 575
 576 static int tb10x_get_functions_count(struct pinctrl_dev *pctl)
 577 {
 578         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 579         return state->pinfuncnt;
 580 }
 581
 582 static const char *tb10x_get_function_name(struct pinctrl_dev *pctl,
 583                                         unsigned n)
 584 {
 585         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 586         return state->pinfuncs[n].name;
 587 }
 588
 589 static int tb10x_get_function_groups(struct pinctrl_dev *pctl,
 590                                 unsigned n, const char * const **groups,
 591                                 unsigned * const num_groups)
 592 {
 593         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 594
 595         *groups = &state->pinfuncs[n].group;
 596         *num_groups = 1;
 597
 598         return 0;
 599 }
 600
 601 static int tb10x_gpio_request_enable(struct pinctrl_dev *pctl,
 602                                         struct pinctrl_gpio_range *range,
 603                                         unsigned pin)
 604 {
 605         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 606         int muxport = -1;
 607         int muxmode = -1;
 608         int i;
 609
 610         mutex_lock(&state->mutex);
 611
 612         /*
 613          * Figure out to which port the requested GPIO belongs and how to
 614          * configure that port.
 615          * This loop also checks for pin conflicts between GPIOs and other
 616          * functions.
 617          */
 618         for (i = 0; i < state->pinfuncgrpcnt; i++) {
 619                 const struct tb10x_pinfuncgrp *pfg = &state->pingroups[i];
 620                 unsigned int mode = pfg->mode;
 621                 int j, port = pfg->port;
 622
 623                 /*
 624                  * Skip pin groups which are always mapped and don't need
 625                  * to be configured.
 626                  */
 627                 if (port < 0)
 628                         continue;
 629
 630                 for (j = 0; j < pfg->pincnt; j++) {
 631                         if (pin == pfg->pins[j]) {
 632                                 if (pfg->isgpio) {
 633                                         /*
 634                                          * Remember the GPIO-only setting of
 635                                          * the port this pin belongs to.
 636                                          */
 637                                         muxport = port;
 638                                         muxmode = mode;
 639                                 } else if (state->ports[port].count
 640                                         && (state->ports[port].mode == mode)) {
 641                                         /*
 642                                          * Error: The requested pin is already
 643                                          * used for something else.
 644                                          */
 645                                         mutex_unlock(&state->mutex);
 646                                         return -EBUSY;
 647                                 }
 648                                 break;
 649                         }
 650                 }
 651         }
 652
 653         /*
 654          * If we haven't returned an error at this point, the GPIO pin is not
 655          * used by another function and the GPIO request can be granted:
 656          * Register pin as being used as GPIO so we don't allocate it to
 657          * another function later.
 658          */
 659         set_bit(pin, state->gpios);
 660
 661         /*
 662          * Potential conflicts between GPIOs and pin functions were caught
 663          * earlier in this function and tb10x_pinctrl_set_config will do the
 664          * Right Thing, either configure the port in GPIO only mode or leave
 665          * another mode compatible with this GPIO request untouched.
 666          */
 667         if (muxport >= 0)
 668                 tb10x_pinctrl_set_config(state, muxport, muxmode);
 669
 670         mutex_unlock(&state->mutex);
 671
 672         return 0;
 673 }
 674
 675 static void tb10x_gpio_disable_free(struct pinctrl_dev *pctl,
 676                                         struct pinctrl_gpio_range *range,
 677                                         unsigned pin)
 678 {
 679         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 680
 681         mutex_lock(&state->mutex);
 682
 683         clear_bit(pin, state->gpios);
 684
 685         mutex_unlock(&state->mutex);
 686 }
 687
 688 static int tb10x_pctl_set_mux(struct pinctrl_dev *pctl,
 689                         unsigned func_selector, unsigned group_selector)
 690 {
 691         struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
 692         const struct tb10x_pinfuncgrp *grp = &state->pingroups[group_selector];
 693         int i;
 694
 695         if (grp->port < 0)
 696                 return 0;
 697
 698         mutex_lock(&state->mutex);
 699
 700         /*
 701          * Check if the requested function is compatible with previously
 702          * requested functions.
 703          */
 704         if (state->ports[grp->port].count
 705                         && (state->ports[grp->port].mode != grp->mode)) {
 706                 mutex_unlock(&state->mutex);
 707                 return -EBUSY;
 708         }
 709
 710         /*
 711          * Check if the requested function is compatible with previously
 712          * requested GPIOs.
 713          */
 714         for (i = 0; i < grp->pincnt; i++)
 715                 if (test_bit(grp->pins[i], state->gpios)) {
 716                         mutex_unlock(&state->mutex);
 717                         return -EBUSY;
 718                 }
 719
 720         tb10x_pinctrl_set_config(state, grp->port, grp->mode);
 721
 722         state->ports[grp->port].count++;
 723
 724         mutex_unlock(&state->mutex);
 725
 726         return 0;
 727 }
 728
 729 static const struct pinmux_ops tb10x_pinmux_ops = {
 730         .get_functions_count = tb10x_get_functions_count,
 731         .get_function_name = tb10x_get_function_name,
 732         .get_function_groups = tb10x_get_function_groups,
 733         .gpio_request_enable = tb10x_gpio_request_enable,
 734         .gpio_disable_free = tb10x_gpio_disable_free,
 735         .set_mux = tb10x_pctl_set_mux,
 736 };
 737
 738 static struct pinctrl_desc tb10x_pindesc = {
 739         .name = "TB10x",
 740         .pins = tb10x_pins,
 741         .npins = ARRAY_SIZE(tb10x_pins),
 742         .owner = THIS_MODULE,
 743         .pctlops = &tb10x_pinctrl_ops,
 744         .pmxops  = &tb10x_pinmux_ops,
 745 };
 746
 747 static int tb10x_pinctrl_probe(struct platform_device *pdev)
 748 {
 749         int ret = -EINVAL;
 750         struct device *dev = &pdev->dev;
 751         struct device_node *of_node = dev->of_node;
 752         struct device_node *child;
 753         struct tb10x_pinctrl *state;
 754         int i;
 755
 756         if (!of_node) {
 757                 dev_err(dev, "No device tree node found.\n");
 758                 return -EINVAL;
 759         }
 760
 761         state = devm_kzalloc(dev, struct_size(state, pinfuncs,
 762                                               of_get_child_count(of_node)),
 763                              GFP_KERNEL);
 764         if (!state)
 765                 return -ENOMEM;
 766
 767         platform_set_drvdata(pdev, state);
 768         mutex_init(&state->mutex);
 769
 770         state->base = devm_platform_ioremap_resource(pdev, 0);
 771         if (IS_ERR(state->base)) {
 772                 ret = PTR_ERR(state->base);
 773                 goto fail;
 774         }
 775
 776         state->pingroups = tb10x_pingroups;
 777         state->pinfuncgrpcnt = ARRAY_SIZE(tb10x_pingroups);
 778
 779         for (i = 0; i < TB10X_PORTS; i++)
 780                 state->ports[i].mode = tb10x_pinctrl_get_config(state, i);
 781
 782         for_each_child_of_node(of_node, child) {
 783                 const char *name;
 784
 785                 if (!of_property_read_string(child, "abilis,function",
 786                                                 &name)) {
 787                         state->pinfuncs[state->pinfuncnt].name = child->name;
 788                         state->pinfuncs[state->pinfuncnt].group = name;
 789                         state->pinfuncnt++;
 790                 }
 791         }
 792
 793         state->pctl = devm_pinctrl_register(dev, &tb10x_pindesc, state);
 794         if (IS_ERR(state->pctl)) {
 795                 dev_err(dev, "could not register TB10x pin driver\n");
 796                 ret = PTR_ERR(state->pctl);
 797                 goto fail;
 798         }
 799
 800         return 0;
 801
 802 fail:
 803         mutex_destroy(&state->mutex);
 804         return ret;
 805 }
 806
 807 static int tb10x_pinctrl_remove(struct platform_device *pdev)
 808 {
 809         struct tb10x_pinctrl *state = platform_get_drvdata(pdev);
 810
 811         mutex_destroy(&state->mutex);
 812
 813         return 0;
 814 }
 815
 816
 817 static const struct of_device_id tb10x_pinctrl_dt_ids[] = {
 818         { .compatible = "abilis,tb10x-iomux" },
 819         { }
 820 };
 821 MODULE_DEVICE_TABLE(of, tb10x_pinctrl_dt_ids);
 822
 823 static struct platform_driver tb10x_pinctrl_pdrv = {
 824         .probe   = tb10x_pinctrl_probe,
 825         .remove  = tb10x_pinctrl_remove,
 826         .driver  = {
 827                 .name  = "tb10x_pinctrl",
 828                 .of_match_table = of_match_ptr(tb10x_pinctrl_dt_ids),
 829         }
 830 };
 831
 832 module_platform_driver(tb10x_pinctrl_pdrv);
 833
 834 MODULE_AUTHOR("Christian Ruppert <christian.ruppert@abilis.com>");
 835 MODULE_LICENSE("GPL");