1 /* Copyright (C) 2016 Broadcom Corporation 2 * 3 * This program is free software; you can redistribute it and/or 4 * modify it under the terms of the GNU General Public License as 5 * published by the Free Software Foundation version 2. 6 * 7 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 8 * kind, whether express or implied; without even the implied warranty 9 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10 * GNU General Public License for more details. 11 * 12 * This file contains the Northstar2 IOMUX driver that supports group 13 * based PINMUX configuration. The PWM is functional only when the 14 * corresponding mfio pin group is selected as gpio. 15 */ 16 17 #include <linux/err.h> 18 #include <linux/io.h> 19 #include <linux/of.h> 20 #include <linux/pinctrl/pinconf.h> 21 #include <linux/pinctrl/pinconf-generic.h> 22 #include <linux/pinctrl/pinctrl.h> 23 #include <linux/pinctrl/pinmux.h> 24 #include <linux/platform_device.h> 25 #include <linux/slab.h> 26 27 #include "../core.h" 28 #include "../pinctrl-utils.h" 29 30 #define NS2_NUM_IOMUX 19 31 #define NS2_NUM_PWM_MUX 4 32 33 #define NS2_PIN_MUX_BASE0 0x00 34 #define NS2_PIN_MUX_BASE1 0x01 35 #define NS2_PIN_CONF_BASE 0x02 36 #define NS2_MUX_PAD_FUNC1_OFFSET 0x04 37 38 #define NS2_PIN_SRC_MASK 0x01 39 #define NS2_PIN_PULL_MASK 0x03 40 #define NS2_PIN_DRIVE_STRENGTH_MASK 0x07 41 42 #define NS2_PIN_PULL_UP 0x01 43 #define NS2_PIN_PULL_DOWN 0x02 44 45 #define NS2_PIN_INPUT_EN_MASK 0x01 46 47 /* 48 * Northstar2 IOMUX register description 49 * 50 * @base: base address number 51 * @offset: register offset for mux configuration of a group 52 * @shift: bit shift for mux configuration of a group 53 * @mask: mask bits 54 * @alt: alternate function to set to 55 */ 56 struct ns2_mux { 57 unsigned int base; 58 unsigned int offset; 59 unsigned int shift; 60 unsigned int mask; 61 unsigned int alt; 62 }; 63 64 /* 65 * Keep track of Northstar2 IOMUX configuration and prevent double 66 * configuration 67 * 68 * @ns2_mux: Northstar2 IOMUX register description 69 * @is_configured: flag to indicate whether a mux setting has already 70 * been configured 71 */ 72 struct ns2_mux_log { 73 struct ns2_mux mux; 74 bool is_configured; 75 }; 76 77 /* 78 * Group based IOMUX configuration 79 * 80 * @name: name of the group 81 * @pins: array of pins used by this group 82 * @num_pins: total number of pins used by this group 83 * @mux: Northstar2 group based IOMUX configuration 84 */ 85 struct ns2_pin_group { 86 const char *name; 87 const unsigned int *pins; 88 const unsigned int num_pins; 89 const struct ns2_mux mux; 90 }; 91 92 /* 93 * Northstar2 mux function and supported pin groups 94 * 95 * @name: name of the function 96 * @groups: array of groups that can be supported by this function 97 * @num_groups: total number of groups that can be supported by function 98 */ 99 struct ns2_pin_function { 100 const char *name; 101 const char * const *groups; 102 const unsigned int num_groups; 103 }; 104 105 /* 106 * Northstar2 IOMUX pinctrl core 107 * 108 * @pctl: pointer to pinctrl_dev 109 * @dev: pointer to device 110 * @base0: first IOMUX register base 111 * @base1: second IOMUX register base 112 * @pinconf_base: configuration register base 113 * @groups: pointer to array of groups 114 * @num_groups: total number of groups 115 * @functions: pointer to array of functions 116 * @num_functions: total number of functions 117 * @mux_log: pointer to the array of mux logs 118 * @lock: lock to protect register access 119 */ 120 struct ns2_pinctrl { 121 struct pinctrl_dev *pctl; 122 struct device *dev; 123 void __iomem *base0; 124 void __iomem *base1; 125 void __iomem *pinconf_base; 126 127 const struct ns2_pin_group *groups; 128 unsigned int num_groups; 129 130 const struct ns2_pin_function *functions; 131 unsigned int num_functions; 132 133 struct ns2_mux_log *mux_log; 134 135 spinlock_t lock; 136 }; 137 138 /* 139 * Pin configuration info 140 * 141 * @base: base address number 142 * @offset: register offset from base 143 * @src_shift: slew rate control bit shift in the register 144 * @input_en: input enable control bit shift 145 * @pull_shift: pull-up/pull-down control bit shift in the register 146 * @drive_shift: drive strength control bit shift in the register 147 */ 148 struct ns2_pinconf { 149 unsigned int base; 150 unsigned int offset; 151 unsigned int src_shift; 152 unsigned int input_en; 153 unsigned int pull_shift; 154 unsigned int drive_shift; 155 }; 156 157 /* 158 * Description of a pin in Northstar2 159 * 160 * @pin: pin number 161 * @name: pin name 162 * @pin_conf: pin configuration structure 163 */ 164 struct ns2_pin { 165 unsigned int pin; 166 char *name; 167 struct ns2_pinconf pin_conf; 168 }; 169 170 #define NS2_PIN_DESC(p, n, b, o, s, i, pu, d) \ 171 { \ 172 .pin = p, \ 173 .name = n, \ 174 .pin_conf = { \ 175 .base = b, \ 176 .offset = o, \ 177 .src_shift = s, \ 178 .input_en = i, \ 179 .pull_shift = pu, \ 180 .drive_shift = d, \ 181 } \ 182 } 183 184 /* 185 * List of pins in Northstar2 186 */ 187 static struct ns2_pin ns2_pins[] = { 188 NS2_PIN_DESC(0, "mfio_0", -1, 0, 0, 0, 0, 0), 189 NS2_PIN_DESC(1, "mfio_1", -1, 0, 0, 0, 0, 0), 190 NS2_PIN_DESC(2, "mfio_2", -1, 0, 0, 0, 0, 0), 191 NS2_PIN_DESC(3, "mfio_3", -1, 0, 0, 0, 0, 0), 192 NS2_PIN_DESC(4, "mfio_4", -1, 0, 0, 0, 0, 0), 193 NS2_PIN_DESC(5, "mfio_5", -1, 0, 0, 0, 0, 0), 194 NS2_PIN_DESC(6, "mfio_6", -1, 0, 0, 0, 0, 0), 195 NS2_PIN_DESC(7, "mfio_7", -1, 0, 0, 0, 0, 0), 196 NS2_PIN_DESC(8, "mfio_8", -1, 0, 0, 0, 0, 0), 197 NS2_PIN_DESC(9, "mfio_9", -1, 0, 0, 0, 0, 0), 198 NS2_PIN_DESC(10, "mfio_10", -1, 0, 0, 0, 0, 0), 199 NS2_PIN_DESC(11, "mfio_11", -1, 0, 0, 0, 0, 0), 200 NS2_PIN_DESC(12, "mfio_12", -1, 0, 0, 0, 0, 0), 201 NS2_PIN_DESC(13, "mfio_13", -1, 0, 0, 0, 0, 0), 202 NS2_PIN_DESC(14, "mfio_14", -1, 0, 0, 0, 0, 0), 203 NS2_PIN_DESC(15, "mfio_15", -1, 0, 0, 0, 0, 0), 204 NS2_PIN_DESC(16, "mfio_16", -1, 0, 0, 0, 0, 0), 205 NS2_PIN_DESC(17, "mfio_17", -1, 0, 0, 0, 0, 0), 206 NS2_PIN_DESC(18, "mfio_18", -1, 0, 0, 0, 0, 0), 207 NS2_PIN_DESC(19, "mfio_19", -1, 0, 0, 0, 0, 0), 208 NS2_PIN_DESC(20, "mfio_20", -1, 0, 0, 0, 0, 0), 209 NS2_PIN_DESC(21, "mfio_21", -1, 0, 0, 0, 0, 0), 210 NS2_PIN_DESC(22, "mfio_22", -1, 0, 0, 0, 0, 0), 211 NS2_PIN_DESC(23, "mfio_23", -1, 0, 0, 0, 0, 0), 212 NS2_PIN_DESC(24, "mfio_24", -1, 0, 0, 0, 0, 0), 213 NS2_PIN_DESC(25, "mfio_25", -1, 0, 0, 0, 0, 0), 214 NS2_PIN_DESC(26, "mfio_26", -1, 0, 0, 0, 0, 0), 215 NS2_PIN_DESC(27, "mfio_27", -1, 0, 0, 0, 0, 0), 216 NS2_PIN_DESC(28, "mfio_28", -1, 0, 0, 0, 0, 0), 217 NS2_PIN_DESC(29, "mfio_29", -1, 0, 0, 0, 0, 0), 218 NS2_PIN_DESC(30, "mfio_30", -1, 0, 0, 0, 0, 0), 219 NS2_PIN_DESC(31, "mfio_31", -1, 0, 0, 0, 0, 0), 220 NS2_PIN_DESC(32, "mfio_32", -1, 0, 0, 0, 0, 0), 221 NS2_PIN_DESC(33, "mfio_33", -1, 0, 0, 0, 0, 0), 222 NS2_PIN_DESC(34, "mfio_34", -1, 0, 0, 0, 0, 0), 223 NS2_PIN_DESC(35, "mfio_35", -1, 0, 0, 0, 0, 0), 224 NS2_PIN_DESC(36, "mfio_36", -1, 0, 0, 0, 0, 0), 225 NS2_PIN_DESC(37, "mfio_37", -1, 0, 0, 0, 0, 0), 226 NS2_PIN_DESC(38, "mfio_38", -1, 0, 0, 0, 0, 0), 227 NS2_PIN_DESC(39, "mfio_39", -1, 0, 0, 0, 0, 0), 228 NS2_PIN_DESC(40, "mfio_40", -1, 0, 0, 0, 0, 0), 229 NS2_PIN_DESC(41, "mfio_41", -1, 0, 0, 0, 0, 0), 230 NS2_PIN_DESC(42, "mfio_42", -1, 0, 0, 0, 0, 0), 231 NS2_PIN_DESC(43, "mfio_43", -1, 0, 0, 0, 0, 0), 232 NS2_PIN_DESC(44, "mfio_44", -1, 0, 0, 0, 0, 0), 233 NS2_PIN_DESC(45, "mfio_45", -1, 0, 0, 0, 0, 0), 234 NS2_PIN_DESC(46, "mfio_46", -1, 0, 0, 0, 0, 0), 235 NS2_PIN_DESC(47, "mfio_47", -1, 0, 0, 0, 0, 0), 236 NS2_PIN_DESC(48, "mfio_48", -1, 0, 0, 0, 0, 0), 237 NS2_PIN_DESC(49, "mfio_49", -1, 0, 0, 0, 0, 0), 238 NS2_PIN_DESC(50, "mfio_50", -1, 0, 0, 0, 0, 0), 239 NS2_PIN_DESC(51, "mfio_51", -1, 0, 0, 0, 0, 0), 240 NS2_PIN_DESC(52, "mfio_52", -1, 0, 0, 0, 0, 0), 241 NS2_PIN_DESC(53, "mfio_53", -1, 0, 0, 0, 0, 0), 242 NS2_PIN_DESC(54, "mfio_54", -1, 0, 0, 0, 0, 0), 243 NS2_PIN_DESC(55, "mfio_55", -1, 0, 0, 0, 0, 0), 244 NS2_PIN_DESC(56, "mfio_56", -1, 0, 0, 0, 0, 0), 245 NS2_PIN_DESC(57, "mfio_57", -1, 0, 0, 0, 0, 0), 246 NS2_PIN_DESC(58, "mfio_58", -1, 0, 0, 0, 0, 0), 247 NS2_PIN_DESC(59, "mfio_59", -1, 0, 0, 0, 0, 0), 248 NS2_PIN_DESC(60, "mfio_60", -1, 0, 0, 0, 0, 0), 249 NS2_PIN_DESC(61, "mfio_61", -1, 0, 0, 0, 0, 0), 250 NS2_PIN_DESC(62, "mfio_62", -1, 0, 0, 0, 0, 0), 251 NS2_PIN_DESC(63, "qspi_wp", 2, 0x0, 31, 30, 27, 24), 252 NS2_PIN_DESC(64, "qspi_hold", 2, 0x0, 23, 22, 19, 16), 253 NS2_PIN_DESC(65, "qspi_cs", 2, 0x0, 15, 14, 11, 8), 254 NS2_PIN_DESC(66, "qspi_sck", 2, 0x0, 7, 6, 3, 0), 255 NS2_PIN_DESC(67, "uart3_sin", 2, 0x04, 31, 30, 27, 24), 256 NS2_PIN_DESC(68, "uart3_sout", 2, 0x04, 23, 22, 19, 16), 257 NS2_PIN_DESC(69, "qspi_mosi", 2, 0x04, 15, 14, 11, 8), 258 NS2_PIN_DESC(70, "qspi_miso", 2, 0x04, 7, 6, 3, 0), 259 NS2_PIN_DESC(71, "spi0_fss", 2, 0x08, 31, 30, 27, 24), 260 NS2_PIN_DESC(72, "spi0_rxd", 2, 0x08, 23, 22, 19, 16), 261 NS2_PIN_DESC(73, "spi0_txd", 2, 0x08, 15, 14, 11, 8), 262 NS2_PIN_DESC(74, "spi0_sck", 2, 0x08, 7, 6, 3, 0), 263 NS2_PIN_DESC(75, "spi1_fss", 2, 0x0c, 31, 30, 27, 24), 264 NS2_PIN_DESC(76, "spi1_rxd", 2, 0x0c, 23, 22, 19, 16), 265 NS2_PIN_DESC(77, "spi1_txd", 2, 0x0c, 15, 14, 11, 8), 266 NS2_PIN_DESC(78, "spi1_sck", 2, 0x0c, 7, 6, 3, 0), 267 NS2_PIN_DESC(79, "sdio0_data7", 2, 0x10, 31, 30, 27, 24), 268 NS2_PIN_DESC(80, "sdio0_emmc_rst", 2, 0x10, 23, 22, 19, 16), 269 NS2_PIN_DESC(81, "sdio0_led_on", 2, 0x10, 15, 14, 11, 8), 270 NS2_PIN_DESC(82, "sdio0_wp", 2, 0x10, 7, 6, 3, 0), 271 NS2_PIN_DESC(83, "sdio0_data3", 2, 0x14, 31, 30, 27, 24), 272 NS2_PIN_DESC(84, "sdio0_data4", 2, 0x14, 23, 22, 19, 16), 273 NS2_PIN_DESC(85, "sdio0_data5", 2, 0x14, 15, 14, 11, 8), 274 NS2_PIN_DESC(86, "sdio0_data6", 2, 0x14, 7, 6, 3, 0), 275 NS2_PIN_DESC(87, "sdio0_cmd", 2, 0x18, 31, 30, 27, 24), 276 NS2_PIN_DESC(88, "sdio0_data0", 2, 0x18, 23, 22, 19, 16), 277 NS2_PIN_DESC(89, "sdio0_data1", 2, 0x18, 15, 14, 11, 8), 278 NS2_PIN_DESC(90, "sdio0_data2", 2, 0x18, 7, 6, 3, 0), 279 NS2_PIN_DESC(91, "sdio1_led_on", 2, 0x1c, 31, 30, 27, 24), 280 NS2_PIN_DESC(92, "sdio1_wp", 2, 0x1c, 23, 22, 19, 16), 281 NS2_PIN_DESC(93, "sdio0_cd_l", 2, 0x1c, 15, 14, 11, 8), 282 NS2_PIN_DESC(94, "sdio0_clk", 2, 0x1c, 7, 6, 3, 0), 283 NS2_PIN_DESC(95, "sdio1_data5", 2, 0x20, 31, 30, 27, 24), 284 NS2_PIN_DESC(96, "sdio1_data6", 2, 0x20, 23, 22, 19, 16), 285 NS2_PIN_DESC(97, "sdio1_data7", 2, 0x20, 15, 14, 11, 8), 286 NS2_PIN_DESC(98, "sdio1_emmc_rst", 2, 0x20, 7, 6, 3, 0), 287 NS2_PIN_DESC(99, "sdio1_data1", 2, 0x24, 31, 30, 27, 24), 288 NS2_PIN_DESC(100, "sdio1_data2", 2, 0x24, 23, 22, 19, 16), 289 NS2_PIN_DESC(101, "sdio1_data3", 2, 0x24, 15, 14, 11, 8), 290 NS2_PIN_DESC(102, "sdio1_data4", 2, 0x24, 7, 6, 3, 0), 291 NS2_PIN_DESC(103, "sdio1_cd_l", 2, 0x28, 31, 30, 27, 24), 292 NS2_PIN_DESC(104, "sdio1_clk", 2, 0x28, 23, 22, 19, 16), 293 NS2_PIN_DESC(105, "sdio1_cmd", 2, 0x28, 15, 14, 11, 8), 294 NS2_PIN_DESC(106, "sdio1_data0", 2, 0x28, 7, 6, 3, 0), 295 NS2_PIN_DESC(107, "ext_mdio_0", 2, 0x2c, 15, 14, 11, 8), 296 NS2_PIN_DESC(108, "ext_mdc_0", 2, 0x2c, 7, 6, 3, 0), 297 NS2_PIN_DESC(109, "usb3_p1_vbus_ppc", 2, 0x34, 31, 30, 27, 24), 298 NS2_PIN_DESC(110, "usb3_p1_overcurrent", 2, 0x34, 23, 22, 19, 16), 299 NS2_PIN_DESC(111, "usb3_p0_vbus_ppc", 2, 0x34, 15, 14, 11, 8), 300 NS2_PIN_DESC(112, "usb3_p0_overcurrent", 2, 0x34, 7, 6, 3, 0), 301 NS2_PIN_DESC(113, "usb2_presence_indication", 2, 0x38, 31, 30, 27, 24), 302 NS2_PIN_DESC(114, "usb2_vbus_present", 2, 0x38, 23, 22, 19, 16), 303 NS2_PIN_DESC(115, "usb2_vbus_ppc", 2, 0x38, 15, 14, 11, 8), 304 NS2_PIN_DESC(116, "usb2_overcurrent", 2, 0x38, 7, 6, 3, 0), 305 NS2_PIN_DESC(117, "sata_led1", 2, 0x3c, 15, 14, 11, 8), 306 NS2_PIN_DESC(118, "sata_led0", 2, 0x3c, 7, 6, 3, 0), 307 }; 308 309 /* 310 * List of groups of pins 311 */ 312 313 static const unsigned int nand_pins[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 314 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}; 315 static const unsigned int nor_data_pins[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 316 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25}; 317 318 static const unsigned int gpio_0_1_pins[] = {24, 25}; 319 static const unsigned int pwm_0_pins[] = {24}; 320 static const unsigned int pwm_1_pins[] = {25}; 321 322 static const unsigned int uart1_ext_clk_pins[] = {26}; 323 static const unsigned int nor_adv_pins[] = {26}; 324 325 static const unsigned int gpio_2_5_pins[] = {27, 28, 29, 30}; 326 static const unsigned int pcie_ab1_clk_wak_pins[] = {27, 28, 29, 30}; 327 static const unsigned int nor_addr_0_3_pins[] = {27, 28, 29, 30}; 328 static const unsigned int pwm_2_pins[] = {27}; 329 static const unsigned int pwm_3_pins[] = {28}; 330 331 static const unsigned int gpio_6_7_pins[] = {31, 32}; 332 static const unsigned int pcie_a3_clk_wak_pins[] = {31, 32}; 333 static const unsigned int nor_addr_4_5_pins[] = {31, 32}; 334 335 static const unsigned int gpio_8_9_pins[] = {33, 34}; 336 static const unsigned int pcie_b3_clk_wak_pins[] = {33, 34}; 337 static const unsigned int nor_addr_6_7_pins[] = {33, 34}; 338 339 static const unsigned int gpio_10_11_pins[] = {35, 36}; 340 static const unsigned int pcie_b2_clk_wak_pins[] = {35, 36}; 341 static const unsigned int nor_addr_8_9_pins[] = {35, 36}; 342 343 static const unsigned int gpio_12_13_pins[] = {37, 38}; 344 static const unsigned int pcie_a2_clk_wak_pins[] = {37, 38}; 345 static const unsigned int nor_addr_10_11_pins[] = {37, 38}; 346 347 static const unsigned int gpio_14_17_pins[] = {39, 40, 41, 42}; 348 static const unsigned int uart0_modem_pins[] = {39, 40, 41, 42}; 349 static const unsigned int nor_addr_12_15_pins[] = {39, 40, 41, 42}; 350 351 static const unsigned int gpio_18_19_pins[] = {43, 44}; 352 static const unsigned int uart0_rts_cts_pins[] = {43, 44}; 353 354 static const unsigned int gpio_20_21_pins[] = {45, 46}; 355 static const unsigned int uart0_in_out_pins[] = {45, 46}; 356 357 static const unsigned int gpio_22_23_pins[] = {47, 48}; 358 static const unsigned int uart1_dcd_dsr_pins[] = {47, 48}; 359 360 static const unsigned int gpio_24_25_pins[] = {49, 50}; 361 static const unsigned int uart1_ri_dtr_pins[] = {49, 50}; 362 363 static const unsigned int gpio_26_27_pins[] = {51, 52}; 364 static const unsigned int uart1_rts_cts_pins[] = {51, 52}; 365 366 static const unsigned int gpio_28_29_pins[] = {53, 54}; 367 static const unsigned int uart1_in_out_pins[] = {53, 54}; 368 369 static const unsigned int gpio_30_31_pins[] = {55, 56}; 370 static const unsigned int uart2_rts_cts_pins[] = {55, 56}; 371 372 #define NS2_PIN_GROUP(group_name, ba, off, sh, ma, al) \ 373 { \ 374 .name = __stringify(group_name) "_grp", \ 375 .pins = group_name ## _pins, \ 376 .num_pins = ARRAY_SIZE(group_name ## _pins), \ 377 .mux = { \ 378 .base = ba, \ 379 .offset = off, \ 380 .shift = sh, \ 381 .mask = ma, \ 382 .alt = al, \ 383 } \ 384 } 385 386 /* 387 * List of Northstar2 pin groups 388 */ 389 static const struct ns2_pin_group ns2_pin_groups[] = { 390 NS2_PIN_GROUP(nand, 0, 0, 31, 1, 0), 391 NS2_PIN_GROUP(nor_data, 0, 0, 31, 1, 1), 392 NS2_PIN_GROUP(gpio_0_1, 0, 0, 31, 1, 0), 393 394 NS2_PIN_GROUP(uart1_ext_clk, 0, 4, 30, 3, 1), 395 NS2_PIN_GROUP(nor_adv, 0, 4, 30, 3, 2), 396 397 NS2_PIN_GROUP(gpio_2_5, 0, 4, 28, 3, 0), 398 NS2_PIN_GROUP(pcie_ab1_clk_wak, 0, 4, 28, 3, 1), 399 NS2_PIN_GROUP(nor_addr_0_3, 0, 4, 28, 3, 2), 400 401 NS2_PIN_GROUP(gpio_6_7, 0, 4, 26, 3, 0), 402 NS2_PIN_GROUP(pcie_a3_clk_wak, 0, 4, 26, 3, 1), 403 NS2_PIN_GROUP(nor_addr_4_5, 0, 4, 26, 3, 2), 404 405 NS2_PIN_GROUP(gpio_8_9, 0, 4, 24, 3, 0), 406 NS2_PIN_GROUP(pcie_b3_clk_wak, 0, 4, 24, 3, 1), 407 NS2_PIN_GROUP(nor_addr_6_7, 0, 4, 24, 3, 2), 408 409 NS2_PIN_GROUP(gpio_10_11, 0, 4, 22, 3, 0), 410 NS2_PIN_GROUP(pcie_b2_clk_wak, 0, 4, 22, 3, 1), 411 NS2_PIN_GROUP(nor_addr_8_9, 0, 4, 22, 3, 2), 412 413 NS2_PIN_GROUP(gpio_12_13, 0, 4, 20, 3, 0), 414 NS2_PIN_GROUP(pcie_a2_clk_wak, 0, 4, 20, 3, 1), 415 NS2_PIN_GROUP(nor_addr_10_11, 0, 4, 20, 3, 2), 416 417 NS2_PIN_GROUP(gpio_14_17, 0, 4, 18, 3, 0), 418 NS2_PIN_GROUP(uart0_modem, 0, 4, 18, 3, 1), 419 NS2_PIN_GROUP(nor_addr_12_15, 0, 4, 18, 3, 2), 420 421 NS2_PIN_GROUP(gpio_18_19, 0, 4, 16, 3, 0), 422 NS2_PIN_GROUP(uart0_rts_cts, 0, 4, 16, 3, 1), 423 424 NS2_PIN_GROUP(gpio_20_21, 0, 4, 14, 3, 0), 425 NS2_PIN_GROUP(uart0_in_out, 0, 4, 14, 3, 1), 426 427 NS2_PIN_GROUP(gpio_22_23, 0, 4, 12, 3, 0), 428 NS2_PIN_GROUP(uart1_dcd_dsr, 0, 4, 12, 3, 1), 429 430 NS2_PIN_GROUP(gpio_24_25, 0, 4, 10, 3, 0), 431 NS2_PIN_GROUP(uart1_ri_dtr, 0, 4, 10, 3, 1), 432 433 NS2_PIN_GROUP(gpio_26_27, 0, 4, 8, 3, 0), 434 NS2_PIN_GROUP(uart1_rts_cts, 0, 4, 8, 3, 1), 435 436 NS2_PIN_GROUP(gpio_28_29, 0, 4, 6, 3, 0), 437 NS2_PIN_GROUP(uart1_in_out, 0, 4, 6, 3, 1), 438 439 NS2_PIN_GROUP(gpio_30_31, 0, 4, 4, 3, 0), 440 NS2_PIN_GROUP(uart2_rts_cts, 0, 4, 4, 3, 1), 441 442 NS2_PIN_GROUP(pwm_0, 1, 0, 0, 1, 1), 443 NS2_PIN_GROUP(pwm_1, 1, 0, 1, 1, 1), 444 NS2_PIN_GROUP(pwm_2, 1, 0, 2, 1, 1), 445 NS2_PIN_GROUP(pwm_3, 1, 0, 3, 1, 1), 446 }; 447 448 /* 449 * List of groups supported by functions 450 */ 451 452 static const char * const nand_grps[] = {"nand_grp"}; 453 454 static const char * const nor_grps[] = {"nor_data_grp", "nor_adv_grp", 455 "nor_addr_0_3_grp", "nor_addr_4_5_grp", "nor_addr_6_7_grp", 456 "nor_addr_8_9_grp", "nor_addr_10_11_grp", "nor_addr_12_15_grp"}; 457 458 static const char * const gpio_grps[] = {"gpio_0_1_grp", "gpio_2_5_grp", 459 "gpio_6_7_grp", "gpio_8_9_grp", "gpio_10_11_grp", "gpio_12_13_grp", 460 "gpio_14_17_grp", "gpio_18_19_grp", "gpio_20_21_grp", "gpio_22_23_grp", 461 "gpio_24_25_grp", "gpio_26_27_grp", "gpio_28_29_grp", 462 "gpio_30_31_grp"}; 463 464 static const char * const pcie_grps[] = {"pcie_ab1_clk_wak_grp", 465 "pcie_a3_clk_wak_grp", "pcie_b3_clk_wak_grp", "pcie_b2_clk_wak_grp", 466 "pcie_a2_clk_wak_grp"}; 467 468 static const char * const uart0_grps[] = {"uart0_modem_grp", 469 "uart0_rts_cts_grp", "uart0_in_out_grp"}; 470 471 static const char * const uart1_grps[] = {"uart1_ext_clk_grp", 472 "uart1_dcd_dsr_grp", "uart1_ri_dtr_grp", "uart1_rts_cts_grp", 473 "uart1_in_out_grp"}; 474 475 static const char * const uart2_grps[] = {"uart2_rts_cts_grp"}; 476 477 static const char * const pwm_grps[] = {"pwm_0_grp", "pwm_1_grp", 478 "pwm_2_grp", "pwm_3_grp"}; 479 480 #define NS2_PIN_FUNCTION(func) \ 481 { \ 482 .name = #func, \ 483 .groups = func ## _grps, \ 484 .num_groups = ARRAY_SIZE(func ## _grps), \ 485 } 486 487 /* 488 * List of supported functions 489 */ 490 static const struct ns2_pin_function ns2_pin_functions[] = { 491 NS2_PIN_FUNCTION(nand), 492 NS2_PIN_FUNCTION(nor), 493 NS2_PIN_FUNCTION(gpio), 494 NS2_PIN_FUNCTION(pcie), 495 NS2_PIN_FUNCTION(uart0), 496 NS2_PIN_FUNCTION(uart1), 497 NS2_PIN_FUNCTION(uart2), 498 NS2_PIN_FUNCTION(pwm), 499 }; 500 501 static int ns2_get_groups_count(struct pinctrl_dev *pctrl_dev) 502 { 503 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 504 505 return pinctrl->num_groups; 506 } 507 508 static const char *ns2_get_group_name(struct pinctrl_dev *pctrl_dev, 509 unsigned int selector) 510 { 511 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 512 513 return pinctrl->groups[selector].name; 514 } 515 516 static int ns2_get_group_pins(struct pinctrl_dev *pctrl_dev, 517 unsigned int selector, const unsigned int **pins, 518 unsigned int *num_pins) 519 { 520 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 521 522 *pins = pinctrl->groups[selector].pins; 523 *num_pins = pinctrl->groups[selector].num_pins; 524 525 return 0; 526 } 527 528 static void ns2_pin_dbg_show(struct pinctrl_dev *pctrl_dev, 529 struct seq_file *s, unsigned int offset) 530 { 531 seq_printf(s, " %s", dev_name(pctrl_dev->dev)); 532 } 533 534 static const struct pinctrl_ops ns2_pinctrl_ops = { 535 .get_groups_count = ns2_get_groups_count, 536 .get_group_name = ns2_get_group_name, 537 .get_group_pins = ns2_get_group_pins, 538 .pin_dbg_show = ns2_pin_dbg_show, 539 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, 540 .dt_free_map = pinctrl_utils_free_map, 541 }; 542 543 static int ns2_get_functions_count(struct pinctrl_dev *pctrl_dev) 544 { 545 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 546 547 return pinctrl->num_functions; 548 } 549 550 static const char *ns2_get_function_name(struct pinctrl_dev *pctrl_dev, 551 unsigned int selector) 552 { 553 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 554 555 return pinctrl->functions[selector].name; 556 } 557 558 static int ns2_get_function_groups(struct pinctrl_dev *pctrl_dev, 559 unsigned int selector, 560 const char * const **groups, 561 unsigned int * const num_groups) 562 { 563 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 564 565 *groups = pinctrl->functions[selector].groups; 566 *num_groups = pinctrl->functions[selector].num_groups; 567 568 return 0; 569 } 570 571 static int ns2_pinmux_set(struct ns2_pinctrl *pinctrl, 572 const struct ns2_pin_function *func, 573 const struct ns2_pin_group *grp, 574 struct ns2_mux_log *mux_log) 575 { 576 const struct ns2_mux *mux = &grp->mux; 577 int i; 578 u32 val, mask; 579 unsigned long flags; 580 void __iomem *base_address; 581 582 for (i = 0; i < NS2_NUM_IOMUX; i++) { 583 if ((mux->shift != mux_log[i].mux.shift) || 584 (mux->base != mux_log[i].mux.base) || 585 (mux->offset != mux_log[i].mux.offset)) 586 continue; 587 588 /* if this is a new configuration, just do it! */ 589 if (!mux_log[i].is_configured) 590 break; 591 592 /* 593 * IOMUX has been configured previously and one is trying to 594 * configure it to a different function 595 */ 596 if (mux_log[i].mux.alt != mux->alt) { 597 dev_err(pinctrl->dev, 598 "double configuration error detected!\n"); 599 dev_err(pinctrl->dev, "func:%s grp:%s\n", 600 func->name, grp->name); 601 return -EINVAL; 602 } 603 604 return 0; 605 } 606 if (i == NS2_NUM_IOMUX) 607 return -EINVAL; 608 609 mask = mux->mask; 610 mux_log[i].mux.alt = mux->alt; 611 mux_log[i].is_configured = true; 612 613 switch (mux->base) { 614 case NS2_PIN_MUX_BASE0: 615 base_address = pinctrl->base0; 616 break; 617 618 case NS2_PIN_MUX_BASE1: 619 base_address = pinctrl->base1; 620 break; 621 622 default: 623 return -EINVAL; 624 } 625 626 spin_lock_irqsave(&pinctrl->lock, flags); 627 val = readl(base_address + grp->mux.offset); 628 val &= ~(mask << grp->mux.shift); 629 val |= grp->mux.alt << grp->mux.shift; 630 writel(val, (base_address + grp->mux.offset)); 631 spin_unlock_irqrestore(&pinctrl->lock, flags); 632 633 return 0; 634 } 635 636 static int ns2_pinmux_enable(struct pinctrl_dev *pctrl_dev, 637 unsigned int func_select, unsigned int grp_select) 638 { 639 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 640 const struct ns2_pin_function *func; 641 const struct ns2_pin_group *grp; 642 643 if (grp_select >= pinctrl->num_groups || 644 func_select >= pinctrl->num_functions) 645 return -EINVAL; 646 647 func = &pinctrl->functions[func_select]; 648 grp = &pinctrl->groups[grp_select]; 649 650 dev_dbg(pctrl_dev->dev, "func:%u name:%s grp:%u name:%s\n", 651 func_select, func->name, grp_select, grp->name); 652 653 dev_dbg(pctrl_dev->dev, "offset:0x%08x shift:%u alt:%u\n", 654 grp->mux.offset, grp->mux.shift, grp->mux.alt); 655 656 return ns2_pinmux_set(pinctrl, func, grp, pinctrl->mux_log); 657 } 658 659 static int ns2_pin_set_enable(struct pinctrl_dev *pctrldev, unsigned int pin, 660 u16 enable) 661 { 662 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 663 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 664 unsigned long flags; 665 u32 val; 666 void __iomem *base_address; 667 668 base_address = pinctrl->pinconf_base; 669 spin_lock_irqsave(&pinctrl->lock, flags); 670 val = readl(base_address + pin_data->pin_conf.offset); 671 val &= ~(NS2_PIN_SRC_MASK << pin_data->pin_conf.input_en); 672 673 if (!enable) 674 val |= NS2_PIN_INPUT_EN_MASK << pin_data->pin_conf.input_en; 675 676 writel(val, (base_address + pin_data->pin_conf.offset)); 677 spin_unlock_irqrestore(&pinctrl->lock, flags); 678 679 dev_dbg(pctrldev->dev, "pin:%u set enable:%d\n", pin, enable); 680 return 0; 681 } 682 683 static int ns2_pin_get_enable(struct pinctrl_dev *pctrldev, unsigned int pin) 684 { 685 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 686 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 687 unsigned long flags; 688 int enable; 689 690 spin_lock_irqsave(&pinctrl->lock, flags); 691 enable = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); 692 enable = (enable >> pin_data->pin_conf.input_en) & 693 NS2_PIN_INPUT_EN_MASK; 694 spin_unlock_irqrestore(&pinctrl->lock, flags); 695 696 if (!enable) 697 enable = NS2_PIN_INPUT_EN_MASK; 698 else 699 enable = 0; 700 701 dev_dbg(pctrldev->dev, "pin:%u get disable:%d\n", pin, enable); 702 return enable; 703 } 704 705 static int ns2_pin_set_slew(struct pinctrl_dev *pctrldev, unsigned int pin, 706 u32 slew) 707 { 708 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 709 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 710 unsigned long flags; 711 u32 val; 712 void __iomem *base_address; 713 714 base_address = pinctrl->pinconf_base; 715 spin_lock_irqsave(&pinctrl->lock, flags); 716 val = readl(base_address + pin_data->pin_conf.offset); 717 val &= ~(NS2_PIN_SRC_MASK << pin_data->pin_conf.src_shift); 718 719 if (slew) 720 val |= NS2_PIN_SRC_MASK << pin_data->pin_conf.src_shift; 721 722 writel(val, (base_address + pin_data->pin_conf.offset)); 723 spin_unlock_irqrestore(&pinctrl->lock, flags); 724 725 dev_dbg(pctrldev->dev, "pin:%u set slew:%d\n", pin, slew); 726 return 0; 727 } 728 729 static int ns2_pin_get_slew(struct pinctrl_dev *pctrldev, unsigned int pin, 730 u16 *slew) 731 { 732 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 733 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 734 unsigned long flags; 735 u32 val; 736 737 spin_lock_irqsave(&pinctrl->lock, flags); 738 val = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); 739 *slew = (val >> pin_data->pin_conf.src_shift) & NS2_PIN_SRC_MASK; 740 spin_unlock_irqrestore(&pinctrl->lock, flags); 741 742 dev_dbg(pctrldev->dev, "pin:%u get slew:%d\n", pin, *slew); 743 return 0; 744 } 745 746 static int ns2_pin_set_pull(struct pinctrl_dev *pctrldev, unsigned int pin, 747 bool pull_up, bool pull_down) 748 { 749 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 750 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 751 unsigned long flags; 752 u32 val; 753 void __iomem *base_address; 754 755 base_address = pinctrl->pinconf_base; 756 spin_lock_irqsave(&pinctrl->lock, flags); 757 val = readl(base_address + pin_data->pin_conf.offset); 758 val &= ~(NS2_PIN_PULL_MASK << pin_data->pin_conf.pull_shift); 759 760 if (pull_up == true) 761 val |= NS2_PIN_PULL_UP << pin_data->pin_conf.pull_shift; 762 if (pull_down == true) 763 val |= NS2_PIN_PULL_DOWN << pin_data->pin_conf.pull_shift; 764 writel(val, (base_address + pin_data->pin_conf.offset)); 765 spin_unlock_irqrestore(&pinctrl->lock, flags); 766 767 dev_dbg(pctrldev->dev, "pin:%u set pullup:%d pulldown: %d\n", 768 pin, pull_up, pull_down); 769 return 0; 770 } 771 772 static void ns2_pin_get_pull(struct pinctrl_dev *pctrldev, 773 unsigned int pin, bool *pull_up, 774 bool *pull_down) 775 { 776 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 777 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 778 unsigned long flags; 779 u32 val; 780 781 spin_lock_irqsave(&pinctrl->lock, flags); 782 val = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); 783 val = (val >> pin_data->pin_conf.pull_shift) & NS2_PIN_PULL_MASK; 784 *pull_up = false; 785 *pull_down = false; 786 787 if (val == NS2_PIN_PULL_UP) 788 *pull_up = true; 789 790 if (val == NS2_PIN_PULL_DOWN) 791 *pull_down = true; 792 spin_unlock_irqrestore(&pinctrl->lock, flags); 793 } 794 795 static int ns2_pin_set_strength(struct pinctrl_dev *pctrldev, unsigned int pin, 796 u32 strength) 797 { 798 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 799 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 800 u32 val; 801 unsigned long flags; 802 void __iomem *base_address; 803 804 /* make sure drive strength is supported */ 805 if (strength < 2 || strength > 16 || (strength % 2)) 806 return -ENOTSUPP; 807 808 base_address = pinctrl->pinconf_base; 809 spin_lock_irqsave(&pinctrl->lock, flags); 810 val = readl(base_address + pin_data->pin_conf.offset); 811 val &= ~(NS2_PIN_DRIVE_STRENGTH_MASK << pin_data->pin_conf.drive_shift); 812 val |= ((strength / 2) - 1) << pin_data->pin_conf.drive_shift; 813 writel(val, (base_address + pin_data->pin_conf.offset)); 814 spin_unlock_irqrestore(&pinctrl->lock, flags); 815 816 dev_dbg(pctrldev->dev, "pin:%u set drive strength:%d mA\n", 817 pin, strength); 818 return 0; 819 } 820 821 static int ns2_pin_get_strength(struct pinctrl_dev *pctrldev, unsigned int pin, 822 u16 *strength) 823 { 824 struct ns2_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrldev); 825 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 826 u32 val; 827 unsigned long flags; 828 829 spin_lock_irqsave(&pinctrl->lock, flags); 830 val = readl(pinctrl->pinconf_base + pin_data->pin_conf.offset); 831 *strength = (val >> pin_data->pin_conf.drive_shift) & 832 NS2_PIN_DRIVE_STRENGTH_MASK; 833 *strength = (*strength + 1) * 2; 834 spin_unlock_irqrestore(&pinctrl->lock, flags); 835 836 dev_dbg(pctrldev->dev, "pin:%u get drive strength:%d mA\n", 837 pin, *strength); 838 return 0; 839 } 840 841 static int ns2_pin_config_get(struct pinctrl_dev *pctldev, unsigned int pin, 842 unsigned long *config) 843 { 844 struct ns2_pin *pin_data = pctldev->desc->pins[pin].drv_data; 845 enum pin_config_param param = pinconf_to_config_param(*config); 846 bool pull_up, pull_down; 847 u16 arg = 0; 848 int ret; 849 850 if (pin_data->pin_conf.base == -1) 851 return -ENOTSUPP; 852 853 switch (param) { 854 case PIN_CONFIG_BIAS_DISABLE: 855 ns2_pin_get_pull(pctldev, pin, &pull_up, &pull_down); 856 if ((pull_up == false) && (pull_down == false)) 857 return 0; 858 else 859 return -EINVAL; 860 861 case PIN_CONFIG_BIAS_PULL_UP: 862 ns2_pin_get_pull(pctldev, pin, &pull_up, &pull_down); 863 if (pull_up) 864 return 0; 865 else 866 return -EINVAL; 867 868 case PIN_CONFIG_BIAS_PULL_DOWN: 869 ns2_pin_get_pull(pctldev, pin, &pull_up, &pull_down); 870 if (pull_down) 871 return 0; 872 else 873 return -EINVAL; 874 875 case PIN_CONFIG_DRIVE_STRENGTH: 876 ret = ns2_pin_get_strength(pctldev, pin, &arg); 877 if (ret) 878 return ret; 879 *config = pinconf_to_config_packed(param, arg); 880 return 0; 881 882 case PIN_CONFIG_SLEW_RATE: 883 ret = ns2_pin_get_slew(pctldev, pin, &arg); 884 if (ret) 885 return ret; 886 *config = pinconf_to_config_packed(param, arg); 887 return 0; 888 889 case PIN_CONFIG_INPUT_ENABLE: 890 ret = ns2_pin_get_enable(pctldev, pin); 891 if (ret) 892 return 0; 893 else 894 return -EINVAL; 895 896 default: 897 return -ENOTSUPP; 898 } 899 } 900 901 static int ns2_pin_config_set(struct pinctrl_dev *pctrldev, unsigned int pin, 902 unsigned long *configs, unsigned int num_configs) 903 { 904 struct ns2_pin *pin_data = pctrldev->desc->pins[pin].drv_data; 905 enum pin_config_param param; 906 unsigned int i; 907 u32 arg; 908 int ret = -ENOTSUPP; 909 910 if (pin_data->pin_conf.base == -1) 911 return -ENOTSUPP; 912 913 for (i = 0; i < num_configs; i++) { 914 param = pinconf_to_config_param(configs[i]); 915 arg = pinconf_to_config_argument(configs[i]); 916 917 switch (param) { 918 case PIN_CONFIG_BIAS_DISABLE: 919 ret = ns2_pin_set_pull(pctrldev, pin, false, false); 920 if (ret < 0) 921 goto out; 922 break; 923 924 case PIN_CONFIG_BIAS_PULL_UP: 925 ret = ns2_pin_set_pull(pctrldev, pin, true, false); 926 if (ret < 0) 927 goto out; 928 break; 929 930 case PIN_CONFIG_BIAS_PULL_DOWN: 931 ret = ns2_pin_set_pull(pctrldev, pin, false, true); 932 if (ret < 0) 933 goto out; 934 break; 935 936 case PIN_CONFIG_DRIVE_STRENGTH: 937 ret = ns2_pin_set_strength(pctrldev, pin, arg); 938 if (ret < 0) 939 goto out; 940 break; 941 942 case PIN_CONFIG_SLEW_RATE: 943 ret = ns2_pin_set_slew(pctrldev, pin, arg); 944 if (ret < 0) 945 goto out; 946 break; 947 948 case PIN_CONFIG_INPUT_ENABLE: 949 ret = ns2_pin_set_enable(pctrldev, pin, arg); 950 if (ret < 0) 951 goto out; 952 break; 953 954 default: 955 dev_err(pctrldev->dev, "invalid configuration\n"); 956 return -ENOTSUPP; 957 } 958 } 959 out: 960 return ret; 961 } 962 static const struct pinmux_ops ns2_pinmux_ops = { 963 .get_functions_count = ns2_get_functions_count, 964 .get_function_name = ns2_get_function_name, 965 .get_function_groups = ns2_get_function_groups, 966 .set_mux = ns2_pinmux_enable, 967 }; 968 969 static const struct pinconf_ops ns2_pinconf_ops = { 970 .is_generic = true, 971 .pin_config_get = ns2_pin_config_get, 972 .pin_config_set = ns2_pin_config_set, 973 }; 974 975 static struct pinctrl_desc ns2_pinctrl_desc = { 976 .name = "ns2-pinmux", 977 .pctlops = &ns2_pinctrl_ops, 978 .pmxops = &ns2_pinmux_ops, 979 .confops = &ns2_pinconf_ops, 980 }; 981 982 static int ns2_mux_log_init(struct ns2_pinctrl *pinctrl) 983 { 984 struct ns2_mux_log *log; 985 unsigned int i; 986 987 pinctrl->mux_log = devm_kcalloc(pinctrl->dev, NS2_NUM_IOMUX, 988 sizeof(struct ns2_mux_log), 989 GFP_KERNEL); 990 if (!pinctrl->mux_log) 991 return -ENOMEM; 992 993 for (i = 0; i < NS2_NUM_IOMUX; i++) 994 pinctrl->mux_log[i].is_configured = false; 995 /* Group 0 uses bit 31 in the IOMUX_PAD_FUNCTION_0 register */ 996 log = &pinctrl->mux_log[0]; 997 log->mux.base = NS2_PIN_MUX_BASE0; 998 log->mux.offset = 0; 999 log->mux.shift = 31; 1000 log->mux.alt = 0; 1001 1002 /* 1003 * Groups 1 through 14 use two bits each in the 1004 * IOMUX_PAD_FUNCTION_1 register starting with 1005 * bit position 30. 1006 */ 1007 for (i = 1; i < (NS2_NUM_IOMUX - NS2_NUM_PWM_MUX); i++) { 1008 log = &pinctrl->mux_log[i]; 1009 log->mux.base = NS2_PIN_MUX_BASE0; 1010 log->mux.offset = NS2_MUX_PAD_FUNC1_OFFSET; 1011 log->mux.shift = 32 - (i * 2); 1012 log->mux.alt = 0; 1013 } 1014 1015 /* 1016 * Groups 15 through 18 use one bit each in the 1017 * AUX_SEL register. 1018 */ 1019 for (i = 0; i < NS2_NUM_PWM_MUX; i++) { 1020 log = &pinctrl->mux_log[(NS2_NUM_IOMUX - NS2_NUM_PWM_MUX) + i]; 1021 log->mux.base = NS2_PIN_MUX_BASE1; 1022 log->mux.offset = 0; 1023 log->mux.shift = i; 1024 log->mux.alt = 0; 1025 } 1026 return 0; 1027 } 1028 1029 static int ns2_pinmux_probe(struct platform_device *pdev) 1030 { 1031 struct ns2_pinctrl *pinctrl; 1032 struct resource *res; 1033 int i, ret; 1034 struct pinctrl_pin_desc *pins; 1035 unsigned int num_pins = ARRAY_SIZE(ns2_pins); 1036 1037 pinctrl = devm_kzalloc(&pdev->dev, sizeof(*pinctrl), GFP_KERNEL); 1038 if (!pinctrl) 1039 return -ENOMEM; 1040 1041 pinctrl->dev = &pdev->dev; 1042 platform_set_drvdata(pdev, pinctrl); 1043 spin_lock_init(&pinctrl->lock); 1044 1045 pinctrl->base0 = devm_platform_ioremap_resource(pdev, 0); 1046 if (IS_ERR(pinctrl->base0)) 1047 return PTR_ERR(pinctrl->base0); 1048 1049 res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 1050 if (!res) 1051 return -EINVAL; 1052 pinctrl->base1 = devm_ioremap_nocache(&pdev->dev, res->start, 1053 resource_size(res)); 1054 if (!pinctrl->base1) { 1055 dev_err(&pdev->dev, "unable to map I/O space\n"); 1056 return -ENOMEM; 1057 } 1058 1059 pinctrl->pinconf_base = devm_platform_ioremap_resource(pdev, 2); 1060 if (IS_ERR(pinctrl->pinconf_base)) 1061 return PTR_ERR(pinctrl->pinconf_base); 1062 1063 ret = ns2_mux_log_init(pinctrl); 1064 if (ret) { 1065 dev_err(&pdev->dev, "unable to initialize IOMUX log\n"); 1066 return ret; 1067 } 1068 1069 pins = devm_kcalloc(&pdev->dev, num_pins, sizeof(*pins), GFP_KERNEL); 1070 if (!pins) 1071 return -ENOMEM; 1072 1073 for (i = 0; i < num_pins; i++) { 1074 pins[i].number = ns2_pins[i].pin; 1075 pins[i].name = ns2_pins[i].name; 1076 pins[i].drv_data = &ns2_pins[i]; 1077 } 1078 1079 pinctrl->groups = ns2_pin_groups; 1080 pinctrl->num_groups = ARRAY_SIZE(ns2_pin_groups); 1081 pinctrl->functions = ns2_pin_functions; 1082 pinctrl->num_functions = ARRAY_SIZE(ns2_pin_functions); 1083 ns2_pinctrl_desc.pins = pins; 1084 ns2_pinctrl_desc.npins = num_pins; 1085 1086 pinctrl->pctl = pinctrl_register(&ns2_pinctrl_desc, &pdev->dev, 1087 pinctrl); 1088 if (IS_ERR(pinctrl->pctl)) { 1089 dev_err(&pdev->dev, "unable to register IOMUX pinctrl\n"); 1090 return PTR_ERR(pinctrl->pctl); 1091 } 1092 1093 return 0; 1094 } 1095 1096 static const struct of_device_id ns2_pinmux_of_match[] = { 1097 {.compatible = "brcm,ns2-pinmux"}, 1098 { } 1099 }; 1100 1101 static struct platform_driver ns2_pinmux_driver = { 1102 .driver = { 1103 .name = "ns2-pinmux", 1104 .of_match_table = ns2_pinmux_of_match, 1105 }, 1106 .probe = ns2_pinmux_probe, 1107 }; 1108 1109 static int __init ns2_pinmux_init(void) 1110 { 1111 return platform_driver_register(&ns2_pinmux_driver); 1112 } 1113 arch_initcall(ns2_pinmux_init); 1114