1 /* 2 * linux/drivers/pinctrl/pinmux-xway.c 3 * based on linux/drivers/pinctrl/pinmux-pxa910.c 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * publishhed by the Free Software Foundation. 8 * 9 * Copyright (C) 2012 John Crispin <blogic@openwrt.org> 10 */ 11 12 #include <linux/err.h> 13 #include <linux/slab.h> 14 #include <linux/module.h> 15 #include <linux/of_platform.h> 16 #include <linux/of_address.h> 17 #include <linux/of_gpio.h> 18 #include <linux/ioport.h> 19 #include <linux/io.h> 20 #include <linux/device.h> 21 #include <linux/platform_device.h> 22 23 #include "pinctrl-lantiq.h" 24 25 #include <lantiq_soc.h> 26 27 /* we have 3 1/2 banks of 16 bit each */ 28 #define PINS 16 29 #define PORT3 3 30 #define PORT(x) (x / PINS) 31 #define PORT_PIN(x) (x % PINS) 32 33 /* we have 2 mux bits that can be set for each pin */ 34 #define MUX_ALT0 0x1 35 #define MUX_ALT1 0x2 36 37 /* 38 * each bank has this offset apart from the 1/2 bank that is mixed into the 39 * other 3 ranges 40 */ 41 #define REG_OFF 0x30 42 43 /* these are the offsets to our registers */ 44 #define GPIO_BASE(p) (REG_OFF * PORT(p)) 45 #define GPIO_OUT(p) GPIO_BASE(p) 46 #define GPIO_IN(p) (GPIO_BASE(p) + 0x04) 47 #define GPIO_DIR(p) (GPIO_BASE(p) + 0x08) 48 #define GPIO_ALT0(p) (GPIO_BASE(p) + 0x0C) 49 #define GPIO_ALT1(p) (GPIO_BASE(p) + 0x10) 50 #define GPIO_OD(p) (GPIO_BASE(p) + 0x14) 51 #define GPIO_PUDSEL(p) (GPIO_BASE(p) + 0x1c) 52 #define GPIO_PUDEN(p) (GPIO_BASE(p) + 0x20) 53 54 /* the 1/2 port needs special offsets for some registers */ 55 #define GPIO3_OD (GPIO_BASE(0) + 0x24) 56 #define GPIO3_PUDSEL (GPIO_BASE(0) + 0x28) 57 #define GPIO3_PUDEN (GPIO_BASE(0) + 0x2C) 58 #define GPIO3_ALT1 (GPIO_BASE(PINS) + 0x24) 59 60 /* macros to help us access the registers */ 61 #define gpio_getbit(m, r, p) (!!(ltq_r32(m + r) & BIT(p))) 62 #define gpio_setbit(m, r, p) ltq_w32_mask(0, BIT(p), m + r) 63 #define gpio_clearbit(m, r, p) ltq_w32_mask(BIT(p), 0, m + r) 64 65 #define MFP_XWAY(a, f0, f1, f2, f3) \ 66 { \ 67 .name = #a, \ 68 .pin = a, \ 69 .func = { \ 70 XWAY_MUX_##f0, \ 71 XWAY_MUX_##f1, \ 72 XWAY_MUX_##f2, \ 73 XWAY_MUX_##f3, \ 74 }, \ 75 } 76 77 #define GRP_MUX(a, m, p) \ 78 { .name = a, .mux = XWAY_MUX_##m, .pins = p, .npins = ARRAY_SIZE(p), } 79 80 #define FUNC_MUX(f, m) \ 81 { .func = f, .mux = XWAY_MUX_##m, } 82 83 #define XWAY_MAX_PIN 32 84 #define XR9_MAX_PIN 56 85 86 enum xway_mux { 87 XWAY_MUX_GPIO = 0, 88 XWAY_MUX_SPI, 89 XWAY_MUX_ASC, 90 XWAY_MUX_PCI, 91 XWAY_MUX_CGU, 92 XWAY_MUX_EBU, 93 XWAY_MUX_JTAG, 94 XWAY_MUX_EXIN, 95 XWAY_MUX_TDM, 96 XWAY_MUX_STP, 97 XWAY_MUX_SIN, 98 XWAY_MUX_GPT, 99 XWAY_MUX_NMI, 100 XWAY_MUX_MDIO, 101 XWAY_MUX_MII, 102 XWAY_MUX_EPHY, 103 XWAY_MUX_DFE, 104 XWAY_MUX_SDIO, 105 XWAY_MUX_GPHY, 106 XWAY_MUX_NONE = 0xffff, 107 }; 108 109 static const struct ltq_mfp_pin xway_mfp[] = { 110 /* pin f0 f1 f2 f3 */ 111 MFP_XWAY(GPIO0, GPIO, EXIN, NONE, TDM), 112 MFP_XWAY(GPIO1, GPIO, EXIN, NONE, NONE), 113 MFP_XWAY(GPIO2, GPIO, CGU, EXIN, GPHY), 114 MFP_XWAY(GPIO3, GPIO, CGU, NONE, PCI), 115 MFP_XWAY(GPIO4, GPIO, STP, NONE, ASC), 116 MFP_XWAY(GPIO5, GPIO, STP, NONE, GPHY), 117 MFP_XWAY(GPIO6, GPIO, STP, GPT, ASC), 118 MFP_XWAY(GPIO7, GPIO, CGU, PCI, GPHY), 119 MFP_XWAY(GPIO8, GPIO, CGU, NMI, NONE), 120 MFP_XWAY(GPIO9, GPIO, ASC, SPI, EXIN), 121 MFP_XWAY(GPIO10, GPIO, ASC, SPI, NONE), 122 MFP_XWAY(GPIO11, GPIO, ASC, PCI, SPI), 123 MFP_XWAY(GPIO12, GPIO, ASC, NONE, NONE), 124 MFP_XWAY(GPIO13, GPIO, EBU, SPI, NONE), 125 MFP_XWAY(GPIO14, GPIO, CGU, PCI, NONE), 126 MFP_XWAY(GPIO15, GPIO, SPI, JTAG, NONE), 127 MFP_XWAY(GPIO16, GPIO, SPI, NONE, JTAG), 128 MFP_XWAY(GPIO17, GPIO, SPI, NONE, JTAG), 129 MFP_XWAY(GPIO18, GPIO, SPI, NONE, JTAG), 130 MFP_XWAY(GPIO19, GPIO, PCI, NONE, NONE), 131 MFP_XWAY(GPIO20, GPIO, JTAG, NONE, NONE), 132 MFP_XWAY(GPIO21, GPIO, PCI, EBU, GPT), 133 MFP_XWAY(GPIO22, GPIO, SPI, NONE, NONE), 134 MFP_XWAY(GPIO23, GPIO, EBU, PCI, STP), 135 MFP_XWAY(GPIO24, GPIO, EBU, TDM, PCI), 136 MFP_XWAY(GPIO25, GPIO, TDM, NONE, ASC), 137 MFP_XWAY(GPIO26, GPIO, EBU, NONE, TDM), 138 MFP_XWAY(GPIO27, GPIO, TDM, NONE, ASC), 139 MFP_XWAY(GPIO28, GPIO, GPT, NONE, NONE), 140 MFP_XWAY(GPIO29, GPIO, PCI, NONE, NONE), 141 MFP_XWAY(GPIO30, GPIO, PCI, NONE, NONE), 142 MFP_XWAY(GPIO31, GPIO, EBU, PCI, NONE), 143 MFP_XWAY(GPIO32, GPIO, NONE, NONE, EBU), 144 MFP_XWAY(GPIO33, GPIO, NONE, NONE, EBU), 145 MFP_XWAY(GPIO34, GPIO, NONE, NONE, EBU), 146 MFP_XWAY(GPIO35, GPIO, NONE, NONE, EBU), 147 MFP_XWAY(GPIO36, GPIO, SIN, NONE, EBU), 148 MFP_XWAY(GPIO37, GPIO, PCI, NONE, NONE), 149 MFP_XWAY(GPIO38, GPIO, PCI, NONE, NONE), 150 MFP_XWAY(GPIO39, GPIO, EXIN, NONE, NONE), 151 MFP_XWAY(GPIO40, GPIO, NONE, NONE, NONE), 152 MFP_XWAY(GPIO41, GPIO, NONE, NONE, NONE), 153 MFP_XWAY(GPIO42, GPIO, MDIO, NONE, NONE), 154 MFP_XWAY(GPIO43, GPIO, MDIO, NONE, NONE), 155 MFP_XWAY(GPIO44, GPIO, NONE, GPHY, SIN), 156 MFP_XWAY(GPIO45, GPIO, NONE, GPHY, SIN), 157 MFP_XWAY(GPIO46, GPIO, NONE, NONE, EXIN), 158 MFP_XWAY(GPIO47, GPIO, NONE, GPHY, SIN), 159 MFP_XWAY(GPIO48, GPIO, EBU, NONE, NONE), 160 MFP_XWAY(GPIO49, GPIO, EBU, NONE, NONE), 161 MFP_XWAY(GPIO50, GPIO, NONE, NONE, NONE), 162 MFP_XWAY(GPIO51, GPIO, NONE, NONE, NONE), 163 MFP_XWAY(GPIO52, GPIO, NONE, NONE, NONE), 164 MFP_XWAY(GPIO53, GPIO, NONE, NONE, NONE), 165 MFP_XWAY(GPIO54, GPIO, NONE, NONE, NONE), 166 MFP_XWAY(GPIO55, GPIO, NONE, NONE, NONE), 167 }; 168 169 static const struct ltq_mfp_pin ase_mfp[] = { 170 /* pin f0 f1 f2 f3 */ 171 MFP_XWAY(GPIO0, GPIO, EXIN, MII, TDM), 172 MFP_XWAY(GPIO1, GPIO, STP, DFE, EBU), 173 MFP_XWAY(GPIO2, GPIO, STP, DFE, EPHY), 174 MFP_XWAY(GPIO3, GPIO, STP, EPHY, EBU), 175 MFP_XWAY(GPIO4, GPIO, GPT, EPHY, MII), 176 MFP_XWAY(GPIO5, GPIO, MII, ASC, GPT), 177 MFP_XWAY(GPIO6, GPIO, MII, ASC, EXIN), 178 MFP_XWAY(GPIO7, GPIO, SPI, MII, JTAG), 179 MFP_XWAY(GPIO8, GPIO, SPI, MII, JTAG), 180 MFP_XWAY(GPIO9, GPIO, SPI, MII, JTAG), 181 MFP_XWAY(GPIO10, GPIO, SPI, MII, JTAG), 182 MFP_XWAY(GPIO11, GPIO, EBU, CGU, JTAG), 183 MFP_XWAY(GPIO12, GPIO, EBU, MII, SDIO), 184 MFP_XWAY(GPIO13, GPIO, EBU, MII, CGU), 185 MFP_XWAY(GPIO14, GPIO, EBU, SPI, CGU), 186 MFP_XWAY(GPIO15, GPIO, EBU, SPI, SDIO), 187 MFP_XWAY(GPIO16, GPIO, NONE, NONE, NONE), 188 MFP_XWAY(GPIO17, GPIO, NONE, NONE, NONE), 189 MFP_XWAY(GPIO18, GPIO, NONE, NONE, NONE), 190 MFP_XWAY(GPIO19, GPIO, EBU, MII, SDIO), 191 MFP_XWAY(GPIO20, GPIO, EBU, MII, SDIO), 192 MFP_XWAY(GPIO21, GPIO, EBU, MII, SDIO), 193 MFP_XWAY(GPIO22, GPIO, EBU, MII, CGU), 194 MFP_XWAY(GPIO23, GPIO, EBU, MII, CGU), 195 MFP_XWAY(GPIO24, GPIO, EBU, NONE, MII), 196 MFP_XWAY(GPIO25, GPIO, EBU, MII, GPT), 197 MFP_XWAY(GPIO26, GPIO, EBU, MII, SDIO), 198 MFP_XWAY(GPIO27, GPIO, EBU, NONE, MII), 199 MFP_XWAY(GPIO28, GPIO, MII, EBU, SDIO), 200 MFP_XWAY(GPIO29, GPIO, EBU, MII, EXIN), 201 MFP_XWAY(GPIO30, GPIO, NONE, NONE, NONE), 202 MFP_XWAY(GPIO31, GPIO, NONE, NONE, NONE), 203 }; 204 205 static const unsigned pins_jtag[] = {GPIO15, GPIO16, GPIO17, GPIO19, GPIO35}; 206 static const unsigned pins_asc0[] = {GPIO11, GPIO12}; 207 static const unsigned pins_asc0_cts_rts[] = {GPIO9, GPIO10}; 208 static const unsigned pins_stp[] = {GPIO4, GPIO5, GPIO6}; 209 static const unsigned pins_nmi[] = {GPIO8}; 210 static const unsigned pins_mdio[] = {GPIO42, GPIO43}; 211 212 static const unsigned pins_gphy0_led0[] = {GPIO5}; 213 static const unsigned pins_gphy0_led1[] = {GPIO7}; 214 static const unsigned pins_gphy0_led2[] = {GPIO2}; 215 static const unsigned pins_gphy1_led0[] = {GPIO44}; 216 static const unsigned pins_gphy1_led1[] = {GPIO45}; 217 static const unsigned pins_gphy1_led2[] = {GPIO47}; 218 219 static const unsigned pins_ebu_a24[] = {GPIO13}; 220 static const unsigned pins_ebu_clk[] = {GPIO21}; 221 static const unsigned pins_ebu_cs1[] = {GPIO23}; 222 static const unsigned pins_ebu_a23[] = {GPIO24}; 223 static const unsigned pins_ebu_wait[] = {GPIO26}; 224 static const unsigned pins_ebu_a25[] = {GPIO31}; 225 static const unsigned pins_ebu_rdy[] = {GPIO48}; 226 static const unsigned pins_ebu_rd[] = {GPIO49}; 227 228 static const unsigned pins_nand_ale[] = {GPIO13}; 229 static const unsigned pins_nand_cs1[] = {GPIO23}; 230 static const unsigned pins_nand_cle[] = {GPIO24}; 231 static const unsigned pins_nand_rdy[] = {GPIO48}; 232 static const unsigned pins_nand_rd[] = {GPIO49}; 233 234 static const unsigned pins_exin0[] = {GPIO0}; 235 static const unsigned pins_exin1[] = {GPIO1}; 236 static const unsigned pins_exin2[] = {GPIO2}; 237 static const unsigned pins_exin3[] = {GPIO39}; 238 static const unsigned pins_exin4[] = {GPIO46}; 239 static const unsigned pins_exin5[] = {GPIO9}; 240 241 static const unsigned pins_spi[] = {GPIO16, GPIO17, GPIO18}; 242 static const unsigned pins_spi_cs1[] = {GPIO15}; 243 static const unsigned pins_spi_cs2[] = {GPIO21}; 244 static const unsigned pins_spi_cs3[] = {GPIO13}; 245 static const unsigned pins_spi_cs4[] = {GPIO10}; 246 static const unsigned pins_spi_cs5[] = {GPIO9}; 247 static const unsigned pins_spi_cs6[] = {GPIO11}; 248 249 static const unsigned pins_gpt1[] = {GPIO28}; 250 static const unsigned pins_gpt2[] = {GPIO21}; 251 static const unsigned pins_gpt3[] = {GPIO6}; 252 253 static const unsigned pins_clkout0[] = {GPIO8}; 254 static const unsigned pins_clkout1[] = {GPIO7}; 255 static const unsigned pins_clkout2[] = {GPIO3}; 256 static const unsigned pins_clkout3[] = {GPIO2}; 257 258 static const unsigned pins_pci_gnt1[] = {GPIO30}; 259 static const unsigned pins_pci_gnt2[] = {GPIO23}; 260 static const unsigned pins_pci_gnt3[] = {GPIO19}; 261 static const unsigned pins_pci_gnt4[] = {GPIO38}; 262 static const unsigned pins_pci_req1[] = {GPIO29}; 263 static const unsigned pins_pci_req2[] = {GPIO31}; 264 static const unsigned pins_pci_req3[] = {GPIO3}; 265 static const unsigned pins_pci_req4[] = {GPIO37}; 266 267 static const unsigned ase_pins_jtag[] = {GPIO7, GPIO8, GPIO9, GPIO10, GPIO11}; 268 static const unsigned ase_pins_asc[] = {GPIO5, GPIO6}; 269 static const unsigned ase_pins_stp[] = {GPIO1, GPIO2, GPIO3}; 270 static const unsigned ase_pins_ephy[] = {GPIO2, GPIO3, GPIO4}; 271 static const unsigned ase_pins_dfe[] = {GPIO1, GPIO2}; 272 273 static const unsigned ase_pins_spi[] = {GPIO8, GPIO9, GPIO10}; 274 static const unsigned ase_pins_spi_cs1[] = {GPIO7}; 275 static const unsigned ase_pins_spi_cs2[] = {GPIO15}; 276 static const unsigned ase_pins_spi_cs3[] = {GPIO14}; 277 278 static const unsigned ase_pins_exin0[] = {GPIO6}; 279 static const unsigned ase_pins_exin1[] = {GPIO29}; 280 static const unsigned ase_pins_exin2[] = {GPIO0}; 281 282 static const unsigned ase_pins_gpt1[] = {GPIO5}; 283 static const unsigned ase_pins_gpt2[] = {GPIO4}; 284 static const unsigned ase_pins_gpt3[] = {GPIO25}; 285 286 static const struct ltq_pin_group xway_grps[] = { 287 GRP_MUX("exin0", EXIN, pins_exin0), 288 GRP_MUX("exin1", EXIN, pins_exin1), 289 GRP_MUX("exin2", EXIN, pins_exin2), 290 GRP_MUX("jtag", JTAG, pins_jtag), 291 GRP_MUX("ebu a23", EBU, pins_ebu_a23), 292 GRP_MUX("ebu a24", EBU, pins_ebu_a24), 293 GRP_MUX("ebu a25", EBU, pins_ebu_a25), 294 GRP_MUX("ebu clk", EBU, pins_ebu_clk), 295 GRP_MUX("ebu cs1", EBU, pins_ebu_cs1), 296 GRP_MUX("ebu wait", EBU, pins_ebu_wait), 297 GRP_MUX("nand ale", EBU, pins_nand_ale), 298 GRP_MUX("nand cs1", EBU, pins_nand_cs1), 299 GRP_MUX("nand cle", EBU, pins_nand_cle), 300 GRP_MUX("spi", SPI, pins_spi), 301 GRP_MUX("spi_cs1", SPI, pins_spi_cs1), 302 GRP_MUX("spi_cs2", SPI, pins_spi_cs2), 303 GRP_MUX("spi_cs3", SPI, pins_spi_cs3), 304 GRP_MUX("spi_cs4", SPI, pins_spi_cs4), 305 GRP_MUX("spi_cs5", SPI, pins_spi_cs5), 306 GRP_MUX("spi_cs6", SPI, pins_spi_cs6), 307 GRP_MUX("asc0", ASC, pins_asc0), 308 GRP_MUX("asc0 cts rts", ASC, pins_asc0_cts_rts), 309 GRP_MUX("stp", STP, pins_stp), 310 GRP_MUX("nmi", NMI, pins_nmi), 311 GRP_MUX("gpt1", GPT, pins_gpt1), 312 GRP_MUX("gpt2", GPT, pins_gpt2), 313 GRP_MUX("gpt3", GPT, pins_gpt3), 314 GRP_MUX("clkout0", CGU, pins_clkout0), 315 GRP_MUX("clkout1", CGU, pins_clkout1), 316 GRP_MUX("clkout2", CGU, pins_clkout2), 317 GRP_MUX("clkout3", CGU, pins_clkout3), 318 GRP_MUX("gnt1", PCI, pins_pci_gnt1), 319 GRP_MUX("gnt2", PCI, pins_pci_gnt2), 320 GRP_MUX("gnt3", PCI, pins_pci_gnt3), 321 GRP_MUX("req1", PCI, pins_pci_req1), 322 GRP_MUX("req2", PCI, pins_pci_req2), 323 GRP_MUX("req3", PCI, pins_pci_req3), 324 /* xrx only */ 325 GRP_MUX("nand rdy", EBU, pins_nand_rdy), 326 GRP_MUX("nand rd", EBU, pins_nand_rd), 327 GRP_MUX("exin3", EXIN, pins_exin3), 328 GRP_MUX("exin4", EXIN, pins_exin4), 329 GRP_MUX("exin5", EXIN, pins_exin5), 330 GRP_MUX("gnt4", PCI, pins_pci_gnt4), 331 GRP_MUX("req4", PCI, pins_pci_gnt4), 332 GRP_MUX("mdio", MDIO, pins_mdio), 333 GRP_MUX("gphy0 led0", GPHY, pins_gphy0_led0), 334 GRP_MUX("gphy0 led1", GPHY, pins_gphy0_led1), 335 GRP_MUX("gphy0 led2", GPHY, pins_gphy0_led2), 336 GRP_MUX("gphy1 led0", GPHY, pins_gphy1_led0), 337 GRP_MUX("gphy1 led1", GPHY, pins_gphy1_led1), 338 GRP_MUX("gphy1 led2", GPHY, pins_gphy1_led2), 339 }; 340 341 static const struct ltq_pin_group ase_grps[] = { 342 GRP_MUX("exin0", EXIN, ase_pins_exin0), 343 GRP_MUX("exin1", EXIN, ase_pins_exin1), 344 GRP_MUX("exin2", EXIN, ase_pins_exin2), 345 GRP_MUX("jtag", JTAG, ase_pins_jtag), 346 GRP_MUX("stp", STP, ase_pins_stp), 347 GRP_MUX("asc", ASC, ase_pins_asc), 348 GRP_MUX("gpt1", GPT, ase_pins_gpt1), 349 GRP_MUX("gpt2", GPT, ase_pins_gpt2), 350 GRP_MUX("gpt3", GPT, ase_pins_gpt3), 351 GRP_MUX("ephy", EPHY, ase_pins_ephy), 352 GRP_MUX("dfe", DFE, ase_pins_dfe), 353 GRP_MUX("spi", SPI, ase_pins_spi), 354 GRP_MUX("spi_cs1", SPI, ase_pins_spi_cs1), 355 GRP_MUX("spi_cs2", SPI, ase_pins_spi_cs2), 356 GRP_MUX("spi_cs3", SPI, ase_pins_spi_cs3), 357 }; 358 359 static const char * const xway_pci_grps[] = {"gnt1", "gnt2", 360 "gnt3", "req1", 361 "req2", "req3"}; 362 static const char * const xway_spi_grps[] = {"spi", "spi_cs1", 363 "spi_cs2", "spi_cs3", 364 "spi_cs4", "spi_cs5", 365 "spi_cs6"}; 366 static const char * const xway_cgu_grps[] = {"clkout0", "clkout1", 367 "clkout2", "clkout3"}; 368 static const char * const xway_ebu_grps[] = {"ebu a23", "ebu a24", 369 "ebu a25", "ebu cs1", 370 "ebu wait", "ebu clk", 371 "nand ale", "nand cs1", 372 "nand cle"}; 373 static const char * const xway_exin_grps[] = {"exin0", "exin1", "exin2"}; 374 static const char * const xway_gpt_grps[] = {"gpt1", "gpt2", "gpt3"}; 375 static const char * const xway_asc_grps[] = {"asc0", "asc0 cts rts"}; 376 static const char * const xway_jtag_grps[] = {"jtag"}; 377 static const char * const xway_stp_grps[] = {"stp"}; 378 static const char * const xway_nmi_grps[] = {"nmi"}; 379 380 /* ar9/vr9/gr9 */ 381 static const char * const xrx_mdio_grps[] = {"mdio"}; 382 static const char * const xrx_gphy_grps[] = {"gphy0 led0", "gphy0 led1", 383 "gphy0 led2", "gphy1 led0", 384 "gphy1 led1", "gphy1 led2"}; 385 static const char * const xrx_ebu_grps[] = {"ebu a23", "ebu a24", 386 "ebu a25", "ebu cs1", 387 "ebu wait", "ebu clk", 388 "nand ale", "nand cs1", 389 "nand cle", "nand rdy", 390 "nand rd"}; 391 static const char * const xrx_exin_grps[] = {"exin0", "exin1", "exin2", 392 "exin3", "exin4", "exin5"}; 393 static const char * const xrx_pci_grps[] = {"gnt1", "gnt2", 394 "gnt3", "gnt4", 395 "req1", "req2", 396 "req3", "req4"}; 397 398 /* ase */ 399 static const char * const ase_exin_grps[] = {"exin0", "exin1", "exin2"}; 400 static const char * const ase_gpt_grps[] = {"gpt1", "gpt2", "gpt3"}; 401 static const char * const ase_dfe_grps[] = {"dfe"}; 402 static const char * const ase_ephy_grps[] = {"ephy"}; 403 static const char * const ase_asc_grps[] = {"asc"}; 404 static const char * const ase_jtag_grps[] = {"jtag"}; 405 static const char * const ase_stp_grps[] = {"stp"}; 406 static const char * const ase_spi_grps[] = {"spi", "spi_cs1", 407 "spi_cs2", "spi_cs3"}; 408 409 static const struct ltq_pmx_func danube_funcs[] = { 410 {"spi", ARRAY_AND_SIZE(xway_spi_grps)}, 411 {"asc", ARRAY_AND_SIZE(xway_asc_grps)}, 412 {"cgu", ARRAY_AND_SIZE(xway_cgu_grps)}, 413 {"jtag", ARRAY_AND_SIZE(xway_jtag_grps)}, 414 {"exin", ARRAY_AND_SIZE(xway_exin_grps)}, 415 {"stp", ARRAY_AND_SIZE(xway_stp_grps)}, 416 {"gpt", ARRAY_AND_SIZE(xway_gpt_grps)}, 417 {"nmi", ARRAY_AND_SIZE(xway_nmi_grps)}, 418 {"pci", ARRAY_AND_SIZE(xway_pci_grps)}, 419 {"ebu", ARRAY_AND_SIZE(xway_ebu_grps)}, 420 }; 421 422 static const struct ltq_pmx_func xrx_funcs[] = { 423 {"spi", ARRAY_AND_SIZE(xway_spi_grps)}, 424 {"asc", ARRAY_AND_SIZE(xway_asc_grps)}, 425 {"cgu", ARRAY_AND_SIZE(xway_cgu_grps)}, 426 {"jtag", ARRAY_AND_SIZE(xway_jtag_grps)}, 427 {"exin", ARRAY_AND_SIZE(xrx_exin_grps)}, 428 {"stp", ARRAY_AND_SIZE(xway_stp_grps)}, 429 {"gpt", ARRAY_AND_SIZE(xway_gpt_grps)}, 430 {"nmi", ARRAY_AND_SIZE(xway_nmi_grps)}, 431 {"pci", ARRAY_AND_SIZE(xrx_pci_grps)}, 432 {"ebu", ARRAY_AND_SIZE(xrx_ebu_grps)}, 433 {"mdio", ARRAY_AND_SIZE(xrx_mdio_grps)}, 434 {"gphy", ARRAY_AND_SIZE(xrx_gphy_grps)}, 435 }; 436 437 static const struct ltq_pmx_func ase_funcs[] = { 438 {"spi", ARRAY_AND_SIZE(ase_spi_grps)}, 439 {"asc", ARRAY_AND_SIZE(ase_asc_grps)}, 440 {"jtag", ARRAY_AND_SIZE(ase_jtag_grps)}, 441 {"exin", ARRAY_AND_SIZE(ase_exin_grps)}, 442 {"stp", ARRAY_AND_SIZE(ase_stp_grps)}, 443 {"gpt", ARRAY_AND_SIZE(ase_gpt_grps)}, 444 {"ephy", ARRAY_AND_SIZE(ase_ephy_grps)}, 445 {"dfe", ARRAY_AND_SIZE(ase_dfe_grps)}, 446 }; 447 448 /* --------- pinconf related code --------- */ 449 static int xway_pinconf_get(struct pinctrl_dev *pctldev, 450 unsigned pin, 451 unsigned long *config) 452 { 453 struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev); 454 enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(*config); 455 int port = PORT(pin); 456 u32 reg; 457 458 switch (param) { 459 case LTQ_PINCONF_PARAM_OPEN_DRAIN: 460 if (port == PORT3) 461 reg = GPIO3_OD; 462 else 463 reg = GPIO_OD(pin); 464 *config = LTQ_PINCONF_PACK(param, 465 !gpio_getbit(info->membase[0], reg, PORT_PIN(pin))); 466 break; 467 468 case LTQ_PINCONF_PARAM_PULL: 469 if (port == PORT3) 470 reg = GPIO3_PUDEN; 471 else 472 reg = GPIO_PUDEN(pin); 473 if (!gpio_getbit(info->membase[0], reg, PORT_PIN(pin))) { 474 *config = LTQ_PINCONF_PACK(param, 0); 475 break; 476 } 477 478 if (port == PORT3) 479 reg = GPIO3_PUDSEL; 480 else 481 reg = GPIO_PUDSEL(pin); 482 if (!gpio_getbit(info->membase[0], reg, PORT_PIN(pin))) 483 *config = LTQ_PINCONF_PACK(param, 2); 484 else 485 *config = LTQ_PINCONF_PACK(param, 1); 486 break; 487 488 case LTQ_PINCONF_PARAM_OUTPUT: 489 reg = GPIO_DIR(pin); 490 *config = LTQ_PINCONF_PACK(param, 491 gpio_getbit(info->membase[0], reg, PORT_PIN(pin))); 492 break; 493 default: 494 dev_err(pctldev->dev, "Invalid config param %04x\n", param); 495 return -ENOTSUPP; 496 } 497 return 0; 498 } 499 500 static int xway_pinconf_set(struct pinctrl_dev *pctldev, 501 unsigned pin, 502 unsigned long *configs, 503 unsigned num_configs) 504 { 505 struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev); 506 enum ltq_pinconf_param param; 507 int arg; 508 int port = PORT(pin); 509 u32 reg; 510 int i; 511 512 for (i = 0; i < num_configs; i++) { 513 param = LTQ_PINCONF_UNPACK_PARAM(configs[i]); 514 arg = LTQ_PINCONF_UNPACK_ARG(configs[i]); 515 516 switch (param) { 517 case LTQ_PINCONF_PARAM_OPEN_DRAIN: 518 if (port == PORT3) 519 reg = GPIO3_OD; 520 else 521 reg = GPIO_OD(pin); 522 if (arg == 0) 523 gpio_setbit(info->membase[0], 524 reg, 525 PORT_PIN(pin)); 526 else 527 gpio_clearbit(info->membase[0], 528 reg, 529 PORT_PIN(pin)); 530 break; 531 532 case LTQ_PINCONF_PARAM_PULL: 533 if (port == PORT3) 534 reg = GPIO3_PUDEN; 535 else 536 reg = GPIO_PUDEN(pin); 537 if (arg == 0) { 538 gpio_clearbit(info->membase[0], 539 reg, 540 PORT_PIN(pin)); 541 break; 542 } 543 gpio_setbit(info->membase[0], reg, PORT_PIN(pin)); 544 545 if (port == PORT3) 546 reg = GPIO3_PUDSEL; 547 else 548 reg = GPIO_PUDSEL(pin); 549 if (arg == 1) 550 gpio_clearbit(info->membase[0], 551 reg, 552 PORT_PIN(pin)); 553 else if (arg == 2) 554 gpio_setbit(info->membase[0], 555 reg, 556 PORT_PIN(pin)); 557 else 558 dev_err(pctldev->dev, 559 "Invalid pull value %d\n", arg); 560 break; 561 562 case LTQ_PINCONF_PARAM_OUTPUT: 563 reg = GPIO_DIR(pin); 564 if (arg == 0) 565 gpio_clearbit(info->membase[0], 566 reg, 567 PORT_PIN(pin)); 568 else 569 gpio_setbit(info->membase[0], 570 reg, 571 PORT_PIN(pin)); 572 break; 573 574 default: 575 dev_err(pctldev->dev, 576 "Invalid config param %04x\n", param); 577 return -ENOTSUPP; 578 } 579 } /* for each config */ 580 581 return 0; 582 } 583 584 int xway_pinconf_group_set(struct pinctrl_dev *pctldev, 585 unsigned selector, 586 unsigned long *configs, 587 unsigned num_configs) 588 { 589 struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev); 590 int i, ret = 0; 591 592 for (i = 0; i < info->grps[selector].npins && !ret; i++) 593 ret = xway_pinconf_set(pctldev, 594 info->grps[selector].pins[i], 595 configs, 596 num_configs); 597 598 return ret; 599 } 600 601 static const struct pinconf_ops xway_pinconf_ops = { 602 .pin_config_get = xway_pinconf_get, 603 .pin_config_set = xway_pinconf_set, 604 .pin_config_group_set = xway_pinconf_group_set, 605 }; 606 607 static struct pinctrl_desc xway_pctrl_desc = { 608 .owner = THIS_MODULE, 609 .confops = &xway_pinconf_ops, 610 }; 611 612 static inline int xway_mux_apply(struct pinctrl_dev *pctrldev, 613 int pin, int mux) 614 { 615 struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev); 616 int port = PORT(pin); 617 u32 alt1_reg = GPIO_ALT1(pin); 618 619 if (port == PORT3) 620 alt1_reg = GPIO3_ALT1; 621 622 if (mux & MUX_ALT0) 623 gpio_setbit(info->membase[0], GPIO_ALT0(pin), PORT_PIN(pin)); 624 else 625 gpio_clearbit(info->membase[0], GPIO_ALT0(pin), PORT_PIN(pin)); 626 627 if (mux & MUX_ALT1) 628 gpio_setbit(info->membase[0], alt1_reg, PORT_PIN(pin)); 629 else 630 gpio_clearbit(info->membase[0], alt1_reg, PORT_PIN(pin)); 631 632 return 0; 633 } 634 635 static const struct ltq_cfg_param xway_cfg_params[] = { 636 {"lantiq,pull", LTQ_PINCONF_PARAM_PULL}, 637 {"lantiq,open-drain", LTQ_PINCONF_PARAM_OPEN_DRAIN}, 638 {"lantiq,output", LTQ_PINCONF_PARAM_OUTPUT}, 639 }; 640 641 static struct ltq_pinmux_info xway_info = { 642 .desc = &xway_pctrl_desc, 643 .apply_mux = xway_mux_apply, 644 .params = xway_cfg_params, 645 .num_params = ARRAY_SIZE(xway_cfg_params), 646 }; 647 648 /* --------- gpio_chip related code --------- */ 649 static void xway_gpio_set(struct gpio_chip *chip, unsigned int pin, int val) 650 { 651 struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); 652 653 if (val) 654 gpio_setbit(info->membase[0], GPIO_OUT(pin), PORT_PIN(pin)); 655 else 656 gpio_clearbit(info->membase[0], GPIO_OUT(pin), PORT_PIN(pin)); 657 } 658 659 static int xway_gpio_get(struct gpio_chip *chip, unsigned int pin) 660 { 661 struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); 662 663 return gpio_getbit(info->membase[0], GPIO_IN(pin), PORT_PIN(pin)); 664 } 665 666 static int xway_gpio_dir_in(struct gpio_chip *chip, unsigned int pin) 667 { 668 struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); 669 670 gpio_clearbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin)); 671 672 return 0; 673 } 674 675 static int xway_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, int val) 676 { 677 struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); 678 679 gpio_setbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin)); 680 xway_gpio_set(chip, pin, val); 681 682 return 0; 683 } 684 685 static int xway_gpio_req(struct gpio_chip *chip, unsigned offset) 686 { 687 int gpio = chip->base + offset; 688 689 return pinctrl_request_gpio(gpio); 690 } 691 692 static void xway_gpio_free(struct gpio_chip *chip, unsigned offset) 693 { 694 int gpio = chip->base + offset; 695 696 pinctrl_free_gpio(gpio); 697 } 698 699 static struct gpio_chip xway_chip = { 700 .label = "gpio-xway", 701 .direction_input = xway_gpio_dir_in, 702 .direction_output = xway_gpio_dir_out, 703 .get = xway_gpio_get, 704 .set = xway_gpio_set, 705 .request = xway_gpio_req, 706 .free = xway_gpio_free, 707 .base = -1, 708 }; 709 710 711 /* --------- register the pinctrl layer --------- */ 712 static const unsigned xway_exin_pin_map[] = {GPIO0, GPIO1, GPIO2, GPIO39, GPIO46, GPIO9}; 713 static const unsigned ase_exin_pins_map[] = {GPIO6, GPIO29, GPIO0}; 714 715 static struct pinctrl_xway_soc { 716 int pin_count; 717 const struct ltq_mfp_pin *mfp; 718 const struct ltq_pin_group *grps; 719 unsigned int num_grps; 720 const struct ltq_pmx_func *funcs; 721 unsigned int num_funcs; 722 const unsigned *exin; 723 unsigned int num_exin; 724 } soc_cfg[] = { 725 /* legacy xway */ 726 {XWAY_MAX_PIN, xway_mfp, 727 xway_grps, ARRAY_SIZE(xway_grps), 728 danube_funcs, ARRAY_SIZE(danube_funcs), 729 xway_exin_pin_map, 3}, 730 /* xway xr9 series */ 731 {XR9_MAX_PIN, xway_mfp, 732 xway_grps, ARRAY_SIZE(xway_grps), 733 xrx_funcs, ARRAY_SIZE(xrx_funcs), 734 xway_exin_pin_map, 6}, 735 /* xway ase series */ 736 {XWAY_MAX_PIN, ase_mfp, 737 ase_grps, ARRAY_SIZE(ase_grps), 738 ase_funcs, ARRAY_SIZE(ase_funcs), 739 ase_exin_pins_map, 3}, 740 }; 741 742 static struct pinctrl_gpio_range xway_gpio_range = { 743 .name = "XWAY GPIO", 744 .gc = &xway_chip, 745 }; 746 747 static const struct of_device_id xway_match[] = { 748 { .compatible = "lantiq,pinctrl-xway", .data = &soc_cfg[0]}, 749 { .compatible = "lantiq,pinctrl-xr9", .data = &soc_cfg[1]}, 750 { .compatible = "lantiq,pinctrl-ase", .data = &soc_cfg[2]}, 751 {}, 752 }; 753 MODULE_DEVICE_TABLE(of, xway_match); 754 755 static int pinmux_xway_probe(struct platform_device *pdev) 756 { 757 const struct of_device_id *match; 758 const struct pinctrl_xway_soc *xway_soc; 759 struct resource *res; 760 int ret, i; 761 762 /* get and remap our register range */ 763 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 764 xway_info.membase[0] = devm_ioremap_resource(&pdev->dev, res); 765 if (IS_ERR(xway_info.membase[0])) 766 return PTR_ERR(xway_info.membase[0]); 767 768 match = of_match_device(xway_match, &pdev->dev); 769 if (match) 770 xway_soc = (const struct pinctrl_xway_soc *) match->data; 771 else 772 xway_soc = &soc_cfg[0]; 773 774 /* find out how many pads we have */ 775 xway_chip.ngpio = xway_soc->pin_count; 776 777 /* load our pad descriptors */ 778 xway_info.pads = devm_kzalloc(&pdev->dev, 779 sizeof(struct pinctrl_pin_desc) * xway_chip.ngpio, 780 GFP_KERNEL); 781 if (!xway_info.pads) { 782 dev_err(&pdev->dev, "Failed to allocate pads\n"); 783 return -ENOMEM; 784 } 785 for (i = 0; i < xway_chip.ngpio; i++) { 786 /* strlen("ioXY") + 1 = 5 */ 787 char *name = devm_kzalloc(&pdev->dev, 5, GFP_KERNEL); 788 789 if (!name) { 790 dev_err(&pdev->dev, "Failed to allocate pad name\n"); 791 return -ENOMEM; 792 } 793 snprintf(name, 5, "io%d", i); 794 xway_info.pads[i].number = GPIO0 + i; 795 xway_info.pads[i].name = name; 796 } 797 xway_pctrl_desc.pins = xway_info.pads; 798 799 /* load the gpio chip */ 800 xway_chip.dev = &pdev->dev; 801 ret = gpiochip_add(&xway_chip); 802 if (ret) { 803 dev_err(&pdev->dev, "Failed to register gpio chip\n"); 804 return ret; 805 } 806 807 /* setup the data needed by pinctrl */ 808 xway_pctrl_desc.name = dev_name(&pdev->dev); 809 xway_pctrl_desc.npins = xway_chip.ngpio; 810 811 xway_info.num_pads = xway_chip.ngpio; 812 xway_info.num_mfp = xway_chip.ngpio; 813 xway_info.mfp = xway_soc->mfp; 814 xway_info.grps = xway_soc->grps; 815 xway_info.num_grps = xway_soc->num_grps; 816 xway_info.funcs = xway_soc->funcs; 817 xway_info.num_funcs = xway_soc->num_funcs; 818 xway_info.exin = xway_soc->exin; 819 xway_info.num_exin = xway_soc->num_exin; 820 821 /* register with the generic lantiq layer */ 822 ret = ltq_pinctrl_register(pdev, &xway_info); 823 if (ret) { 824 gpiochip_remove(&xway_chip); 825 dev_err(&pdev->dev, "Failed to register pinctrl driver\n"); 826 return ret; 827 } 828 829 /* finish with registering the gpio range in pinctrl */ 830 xway_gpio_range.npins = xway_chip.ngpio; 831 xway_gpio_range.base = xway_chip.base; 832 pinctrl_add_gpio_range(xway_info.pctrl, &xway_gpio_range); 833 dev_info(&pdev->dev, "Init done\n"); 834 return 0; 835 } 836 837 static struct platform_driver pinmux_xway_driver = { 838 .probe = pinmux_xway_probe, 839 .driver = { 840 .name = "pinctrl-xway", 841 .of_match_table = xway_match, 842 }, 843 }; 844 845 static int __init pinmux_xway_init(void) 846 { 847 return platform_driver_register(&pinmux_xway_driver); 848 } 849 850 core_initcall_sync(pinmux_xway_init); 851