1/* 2 * Copyright (C) 2014-2017 Broadcom 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation version 2. 7 * 8 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 9 * kind, whether express or implied; without even the implied warranty 10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 14/* 15 * Broadcom Cygnus IOMUX driver 16 * 17 * This file contains the Cygnus IOMUX driver that supports group based PINMUX 18 * configuration. Although PINMUX configuration is mainly group based, the 19 * Cygnus IOMUX controller allows certain pins to be individually muxed to GPIO 20 * function, and therefore be controlled by the Cygnus ASIU GPIO controller 21 */ 22 23#include <linux/err.h> 24#include <linux/io.h> 25#include <linux/of.h> 26#include <linux/slab.h> 27#include <linux/platform_device.h> 28#include <linux/pinctrl/pinctrl.h> 29#include <linux/pinctrl/pinmux.h> 30#include <linux/pinctrl/pinconf.h> 31#include <linux/pinctrl/pinconf-generic.h> 32#include "../core.h" 33#include "../pinctrl-utils.h" 34 35#define CYGNUS_NUM_IOMUX_REGS 8 36#define CYGNUS_NUM_MUX_PER_REG 8 37#define CYGNUS_NUM_IOMUX (CYGNUS_NUM_IOMUX_REGS * \ 38 CYGNUS_NUM_MUX_PER_REG) 39 40/* 41 * Cygnus IOMUX register description 42 * 43 * @offset: register offset for mux configuration of a group 44 * @shift: bit shift for mux configuration of a group 45 * @alt: alternate function to set to 46 */ 47struct cygnus_mux { 48 unsigned int offset; 49 unsigned int shift; 50 unsigned int alt; 51}; 52 53/* 54 * Keep track of Cygnus IOMUX configuration and prevent double configuration 55 * 56 * @cygnus_mux: Cygnus IOMUX register description 57 * @is_configured: flag to indicate whether a mux setting has already been 58 * configured 59 */ 60struct cygnus_mux_log { 61 struct cygnus_mux mux; 62 bool is_configured; 63}; 64 65/* 66 * Group based IOMUX configuration 67 * 68 * @name: name of the group 69 * @pins: array of pins used by this group 70 * @num_pins: total number of pins used by this group 71 * @mux: Cygnus group based IOMUX configuration 72 */ 73struct cygnus_pin_group { 74 const char *name; 75 const unsigned *pins; 76 unsigned num_pins; 77 struct cygnus_mux mux; 78}; 79 80/* 81 * Cygnus mux function and supported pin groups 82 * 83 * @name: name of the function 84 * @groups: array of groups that can be supported by this function 85 * @num_groups: total number of groups that can be supported by this function 86 */ 87struct cygnus_pin_function { 88 const char *name; 89 const char * const *groups; 90 unsigned num_groups; 91}; 92 93/* 94 * Cygnus IOMUX pinctrl core 95 * 96 * @pctl: pointer to pinctrl_dev 97 * @dev: pointer to device 98 * @base0: first I/O register base of the Cygnus IOMUX controller 99 * @base1: second I/O register base 100 * @groups: pointer to array of groups 101 * @num_groups: total number of groups 102 * @functions: pointer to array of functions 103 * @num_functions: total number of functions 104 * @mux_log: pointer to the array of mux logs 105 * @lock: lock to protect register access 106 */ 107struct cygnus_pinctrl { 108 struct pinctrl_dev *pctl; 109 struct device *dev; 110 void __iomem *base0; 111 void __iomem *base1; 112 113 const struct cygnus_pin_group *groups; 114 unsigned num_groups; 115 116 const struct cygnus_pin_function *functions; 117 unsigned num_functions; 118 119 struct cygnus_mux_log *mux_log; 120 121 spinlock_t lock; 122}; 123 124/* 125 * Certain pins can be individually muxed to GPIO function 126 * 127 * @is_supported: flag to indicate GPIO mux is supported for this pin 128 * @offset: register offset for GPIO mux override of a pin 129 * @shift: bit shift for GPIO mux override of a pin 130 */ 131struct cygnus_gpio_mux { 132 int is_supported; 133 unsigned int offset; 134 unsigned int shift; 135}; 136 137/* 138 * Description of a pin in Cygnus 139 * 140 * @pin: pin number 141 * @name: pin name 142 * @gpio_mux: GPIO override related information 143 */ 144struct cygnus_pin { 145 unsigned pin; 146 char *name; 147 struct cygnus_gpio_mux gpio_mux; 148}; 149 150#define CYGNUS_PIN_DESC(p, n, i, o, s) \ 151{ \ 152 .pin = p, \ 153 .name = n, \ 154 .gpio_mux = { \ 155 .is_supported = i, \ 156 .offset = o, \ 157 .shift = s, \ 158 }, \ 159} 160 161/* 162 * List of pins in Cygnus 163 */ 164static struct cygnus_pin cygnus_pins[] = { 165 CYGNUS_PIN_DESC(0, "ext_device_reset_n", 0, 0, 0), 166 CYGNUS_PIN_DESC(1, "chip_mode0", 0, 0, 0), 167 CYGNUS_PIN_DESC(2, "chip_mode1", 0, 0, 0), 168 CYGNUS_PIN_DESC(3, "chip_mode2", 0, 0, 0), 169 CYGNUS_PIN_DESC(4, "chip_mode3", 0, 0, 0), 170 CYGNUS_PIN_DESC(5, "chip_mode4", 0, 0, 0), 171 CYGNUS_PIN_DESC(6, "bsc0_scl", 0, 0, 0), 172 CYGNUS_PIN_DESC(7, "bsc0_sda", 0, 0, 0), 173 CYGNUS_PIN_DESC(8, "bsc1_scl", 0, 0, 0), 174 CYGNUS_PIN_DESC(9, "bsc1_sda", 0, 0, 0), 175 CYGNUS_PIN_DESC(10, "d1w_dq", 1, 0x28, 0), 176 CYGNUS_PIN_DESC(11, "d1wowstz_l", 1, 0x4, 28), 177 CYGNUS_PIN_DESC(12, "gpio0", 0, 0, 0), 178 CYGNUS_PIN_DESC(13, "gpio1", 0, 0, 0), 179 CYGNUS_PIN_DESC(14, "gpio2", 0, 0, 0), 180 CYGNUS_PIN_DESC(15, "gpio3", 0, 0, 0), 181 CYGNUS_PIN_DESC(16, "gpio4", 0, 0, 0), 182 CYGNUS_PIN_DESC(17, "gpio5", 0, 0, 0), 183 CYGNUS_PIN_DESC(18, "gpio6", 0, 0, 0), 184 CYGNUS_PIN_DESC(19, "gpio7", 0, 0, 0), 185 CYGNUS_PIN_DESC(20, "gpio8", 0, 0, 0), 186 CYGNUS_PIN_DESC(21, "gpio9", 0, 0, 0), 187 CYGNUS_PIN_DESC(22, "gpio10", 0, 0, 0), 188 CYGNUS_PIN_DESC(23, "gpio11", 0, 0, 0), 189 CYGNUS_PIN_DESC(24, "gpio12", 0, 0, 0), 190 CYGNUS_PIN_DESC(25, "gpio13", 0, 0, 0), 191 CYGNUS_PIN_DESC(26, "gpio14", 0, 0, 0), 192 CYGNUS_PIN_DESC(27, "gpio15", 0, 0, 0), 193 CYGNUS_PIN_DESC(28, "gpio16", 0, 0, 0), 194 CYGNUS_PIN_DESC(29, "gpio17", 0, 0, 0), 195 CYGNUS_PIN_DESC(30, "gpio18", 0, 0, 0), 196 CYGNUS_PIN_DESC(31, "gpio19", 0, 0, 0), 197 CYGNUS_PIN_DESC(32, "gpio20", 0, 0, 0), 198 CYGNUS_PIN_DESC(33, "gpio21", 0, 0, 0), 199 CYGNUS_PIN_DESC(34, "gpio22", 0, 0, 0), 200 CYGNUS_PIN_DESC(35, "gpio23", 0, 0, 0), 201 CYGNUS_PIN_DESC(36, "mdc", 0, 0, 0), 202 CYGNUS_PIN_DESC(37, "mdio", 0, 0, 0), 203 CYGNUS_PIN_DESC(38, "pwm0", 1, 0x10, 30), 204 CYGNUS_PIN_DESC(39, "pwm1", 1, 0x10, 28), 205 CYGNUS_PIN_DESC(40, "pwm2", 1, 0x10, 26), 206 CYGNUS_PIN_DESC(41, "pwm3", 1, 0x10, 24), 207 CYGNUS_PIN_DESC(42, "sc0_clk", 1, 0x10, 22), 208 CYGNUS_PIN_DESC(43, "sc0_cmdvcc_l", 1, 0x10, 20), 209 CYGNUS_PIN_DESC(44, "sc0_detect", 1, 0x10, 18), 210 CYGNUS_PIN_DESC(45, "sc0_fcb", 1, 0x10, 16), 211 CYGNUS_PIN_DESC(46, "sc0_io", 1, 0x10, 14), 212 CYGNUS_PIN_DESC(47, "sc0_rst_l", 1, 0x10, 12), 213 CYGNUS_PIN_DESC(48, "sc1_clk", 1, 0x10, 10), 214 CYGNUS_PIN_DESC(49, "sc1_cmdvcc_l", 1, 0x10, 8), 215 CYGNUS_PIN_DESC(50, "sc1_detect", 1, 0x10, 6), 216 CYGNUS_PIN_DESC(51, "sc1_fcb", 1, 0x10, 4), 217 CYGNUS_PIN_DESC(52, "sc1_io", 1, 0x10, 2), 218 CYGNUS_PIN_DESC(53, "sc1_rst_l", 1, 0x10, 0), 219 CYGNUS_PIN_DESC(54, "spi0_clk", 1, 0x18, 10), 220 CYGNUS_PIN_DESC(55, "spi0_mosi", 1, 0x18, 6), 221 CYGNUS_PIN_DESC(56, "spi0_miso", 1, 0x18, 8), 222 CYGNUS_PIN_DESC(57, "spi0_ss", 1, 0x18, 4), 223 CYGNUS_PIN_DESC(58, "spi1_clk", 1, 0x18, 2), 224 CYGNUS_PIN_DESC(59, "spi1_mosi", 1, 0x1c, 30), 225 CYGNUS_PIN_DESC(60, "spi1_miso", 1, 0x18, 0), 226 CYGNUS_PIN_DESC(61, "spi1_ss", 1, 0x1c, 28), 227 CYGNUS_PIN_DESC(62, "spi2_clk", 1, 0x1c, 26), 228 CYGNUS_PIN_DESC(63, "spi2_mosi", 1, 0x1c, 22), 229 CYGNUS_PIN_DESC(64, "spi2_miso", 1, 0x1c, 24), 230 CYGNUS_PIN_DESC(65, "spi2_ss", 1, 0x1c, 20), 231 CYGNUS_PIN_DESC(66, "spi3_clk", 1, 0x1c, 18), 232 CYGNUS_PIN_DESC(67, "spi3_mosi", 1, 0x1c, 14), 233 CYGNUS_PIN_DESC(68, "spi3_miso", 1, 0x1c, 16), 234 CYGNUS_PIN_DESC(69, "spi3_ss", 1, 0x1c, 12), 235 CYGNUS_PIN_DESC(70, "uart0_cts", 1, 0x1c, 10), 236 CYGNUS_PIN_DESC(71, "uart0_rts", 1, 0x1c, 8), 237 CYGNUS_PIN_DESC(72, "uart0_rx", 1, 0x1c, 6), 238 CYGNUS_PIN_DESC(73, "uart0_tx", 1, 0x1c, 4), 239 CYGNUS_PIN_DESC(74, "uart1_cts", 1, 0x1c, 2), 240 CYGNUS_PIN_DESC(75, "uart1_dcd", 1, 0x1c, 0), 241 CYGNUS_PIN_DESC(76, "uart1_dsr", 1, 0x20, 14), 242 CYGNUS_PIN_DESC(77, "uart1_dtr", 1, 0x20, 12), 243 CYGNUS_PIN_DESC(78, "uart1_ri", 1, 0x20, 10), 244 CYGNUS_PIN_DESC(79, "uart1_rts", 1, 0x20, 8), 245 CYGNUS_PIN_DESC(80, "uart1_rx", 1, 0x20, 6), 246 CYGNUS_PIN_DESC(81, "uart1_tx", 1, 0x20, 4), 247 CYGNUS_PIN_DESC(82, "uart3_rx", 1, 0x20, 2), 248 CYGNUS_PIN_DESC(83, "uart3_tx", 1, 0x20, 0), 249 CYGNUS_PIN_DESC(84, "sdio1_clk_sdcard", 1, 0x14, 6), 250 CYGNUS_PIN_DESC(85, "sdio1_cmd", 1, 0x14, 4), 251 CYGNUS_PIN_DESC(86, "sdio1_data0", 1, 0x14, 2), 252 CYGNUS_PIN_DESC(87, "sdio1_data1", 1, 0x14, 0), 253 CYGNUS_PIN_DESC(88, "sdio1_data2", 1, 0x18, 30), 254 CYGNUS_PIN_DESC(89, "sdio1_data3", 1, 0x18, 28), 255 CYGNUS_PIN_DESC(90, "sdio1_wp_n", 1, 0x18, 24), 256 CYGNUS_PIN_DESC(91, "sdio1_card_rst", 1, 0x14, 10), 257 CYGNUS_PIN_DESC(92, "sdio1_led_on", 1, 0x18, 26), 258 CYGNUS_PIN_DESC(93, "sdio1_cd", 1, 0x14, 8), 259 CYGNUS_PIN_DESC(94, "sdio0_clk_sdcard", 1, 0x14, 26), 260 CYGNUS_PIN_DESC(95, "sdio0_cmd", 1, 0x14, 24), 261 CYGNUS_PIN_DESC(96, "sdio0_data0", 1, 0x14, 22), 262 CYGNUS_PIN_DESC(97, "sdio0_data1", 1, 0x14, 20), 263 CYGNUS_PIN_DESC(98, "sdio0_data2", 1, 0x14, 18), 264 CYGNUS_PIN_DESC(99, "sdio0_data3", 1, 0x14, 16), 265 CYGNUS_PIN_DESC(100, "sdio0_wp_n", 1, 0x14, 12), 266 CYGNUS_PIN_DESC(101, "sdio0_card_rst", 1, 0x14, 30), 267 CYGNUS_PIN_DESC(102, "sdio0_led_on", 1, 0x14, 14), 268 CYGNUS_PIN_DESC(103, "sdio0_cd", 1, 0x14, 28), 269 CYGNUS_PIN_DESC(104, "sflash_clk", 1, 0x18, 22), 270 CYGNUS_PIN_DESC(105, "sflash_cs_l", 1, 0x18, 20), 271 CYGNUS_PIN_DESC(106, "sflash_mosi", 1, 0x18, 14), 272 CYGNUS_PIN_DESC(107, "sflash_miso", 1, 0x18, 16), 273 CYGNUS_PIN_DESC(108, "sflash_wp_n", 1, 0x18, 12), 274 CYGNUS_PIN_DESC(109, "sflash_hold_n", 1, 0x18, 18), 275 CYGNUS_PIN_DESC(110, "nand_ale", 1, 0xc, 30), 276 CYGNUS_PIN_DESC(111, "nand_ce0_l", 1, 0xc, 28), 277 CYGNUS_PIN_DESC(112, "nand_ce1_l", 1, 0xc, 26), 278 CYGNUS_PIN_DESC(113, "nand_cle", 1, 0xc, 24), 279 CYGNUS_PIN_DESC(114, "nand_dq0", 1, 0xc, 22), 280 CYGNUS_PIN_DESC(115, "nand_dq1", 1, 0xc, 20), 281 CYGNUS_PIN_DESC(116, "nand_dq2", 1, 0xc, 18), 282 CYGNUS_PIN_DESC(117, "nand_dq3", 1, 0xc, 16), 283 CYGNUS_PIN_DESC(118, "nand_dq4", 1, 0xc, 14), 284 CYGNUS_PIN_DESC(119, "nand_dq5", 1, 0xc, 12), 285 CYGNUS_PIN_DESC(120, "nand_dq6", 1, 0xc, 10), 286 CYGNUS_PIN_DESC(121, "nand_dq7", 1, 0xc, 8), 287 CYGNUS_PIN_DESC(122, "nand_rb_l", 1, 0xc, 6), 288 CYGNUS_PIN_DESC(123, "nand_re_l", 1, 0xc, 4), 289 CYGNUS_PIN_DESC(124, "nand_we_l", 1, 0xc, 2), 290 CYGNUS_PIN_DESC(125, "nand_wp_l", 1, 0xc, 0), 291 CYGNUS_PIN_DESC(126, "lcd_clac", 1, 0x4, 26), 292 CYGNUS_PIN_DESC(127, "lcd_clcp", 1, 0x4, 24), 293 CYGNUS_PIN_DESC(128, "lcd_cld0", 1, 0x4, 22), 294 CYGNUS_PIN_DESC(129, "lcd_cld1", 1, 0x4, 0), 295 CYGNUS_PIN_DESC(130, "lcd_cld10", 1, 0x4, 20), 296 CYGNUS_PIN_DESC(131, "lcd_cld11", 1, 0x4, 18), 297 CYGNUS_PIN_DESC(132, "lcd_cld12", 1, 0x4, 16), 298 CYGNUS_PIN_DESC(133, "lcd_cld13", 1, 0x4, 14), 299 CYGNUS_PIN_DESC(134, "lcd_cld14", 1, 0x4, 12), 300 CYGNUS_PIN_DESC(135, "lcd_cld15", 1, 0x4, 10), 301 CYGNUS_PIN_DESC(136, "lcd_cld16", 1, 0x4, 8), 302 CYGNUS_PIN_DESC(137, "lcd_cld17", 1, 0x4, 6), 303 CYGNUS_PIN_DESC(138, "lcd_cld18", 1, 0x4, 4), 304 CYGNUS_PIN_DESC(139, "lcd_cld19", 1, 0x4, 2), 305 CYGNUS_PIN_DESC(140, "lcd_cld2", 1, 0x8, 22), 306 CYGNUS_PIN_DESC(141, "lcd_cld20", 1, 0x8, 30), 307 CYGNUS_PIN_DESC(142, "lcd_cld21", 1, 0x8, 28), 308 CYGNUS_PIN_DESC(143, "lcd_cld22", 1, 0x8, 26), 309 CYGNUS_PIN_DESC(144, "lcd_cld23", 1, 0x8, 24), 310 CYGNUS_PIN_DESC(145, "lcd_cld3", 1, 0x8, 20), 311 CYGNUS_PIN_DESC(146, "lcd_cld4", 1, 0x8, 18), 312 CYGNUS_PIN_DESC(147, "lcd_cld5", 1, 0x8, 16), 313 CYGNUS_PIN_DESC(148, "lcd_cld6", 1, 0x8, 14), 314 CYGNUS_PIN_DESC(149, "lcd_cld7", 1, 0x8, 12), 315 CYGNUS_PIN_DESC(150, "lcd_cld8", 1, 0x8, 10), 316 CYGNUS_PIN_DESC(151, "lcd_cld9", 1, 0x8, 8), 317 CYGNUS_PIN_DESC(152, "lcd_clfp", 1, 0x8, 6), 318 CYGNUS_PIN_DESC(153, "lcd_clle", 1, 0x8, 4), 319 CYGNUS_PIN_DESC(154, "lcd_cllp", 1, 0x8, 2), 320 CYGNUS_PIN_DESC(155, "lcd_clpower", 1, 0x8, 0), 321 CYGNUS_PIN_DESC(156, "camera_vsync", 1, 0x4, 30), 322 CYGNUS_PIN_DESC(157, "camera_trigger", 1, 0x0, 0), 323 CYGNUS_PIN_DESC(158, "camera_strobe", 1, 0x0, 2), 324 CYGNUS_PIN_DESC(159, "camera_standby", 1, 0x0, 4), 325 CYGNUS_PIN_DESC(160, "camera_reset_n", 1, 0x0, 6), 326 CYGNUS_PIN_DESC(161, "camera_pixdata9", 1, 0x0, 8), 327 CYGNUS_PIN_DESC(162, "camera_pixdata8", 1, 0x0, 10), 328 CYGNUS_PIN_DESC(163, "camera_pixdata7", 1, 0x0, 12), 329 CYGNUS_PIN_DESC(164, "camera_pixdata6", 1, 0x0, 14), 330 CYGNUS_PIN_DESC(165, "camera_pixdata5", 1, 0x0, 16), 331 CYGNUS_PIN_DESC(166, "camera_pixdata4", 1, 0x0, 18), 332 CYGNUS_PIN_DESC(167, "camera_pixdata3", 1, 0x0, 20), 333 CYGNUS_PIN_DESC(168, "camera_pixdata2", 1, 0x0, 22), 334 CYGNUS_PIN_DESC(169, "camera_pixdata1", 1, 0x0, 24), 335 CYGNUS_PIN_DESC(170, "camera_pixdata0", 1, 0x0, 26), 336 CYGNUS_PIN_DESC(171, "camera_pixclk", 1, 0x0, 28), 337 CYGNUS_PIN_DESC(172, "camera_hsync", 1, 0x0, 30), 338 CYGNUS_PIN_DESC(173, "camera_pll_ref_clk", 0, 0, 0), 339 CYGNUS_PIN_DESC(174, "usb_id_indication", 0, 0, 0), 340 CYGNUS_PIN_DESC(175, "usb_vbus_indication", 0, 0, 0), 341 CYGNUS_PIN_DESC(176, "gpio0_3p3", 0, 0, 0), 342 CYGNUS_PIN_DESC(177, "gpio1_3p3", 0, 0, 0), 343 CYGNUS_PIN_DESC(178, "gpio2_3p3", 0, 0, 0), 344 CYGNUS_PIN_DESC(179, "gpio3_3p3", 0, 0, 0), 345}; 346 347/* 348 * List of groups of pins 349 */ 350static const unsigned bsc1_pins[] = { 8, 9 }; 351static const unsigned pcie_clkreq_pins[] = { 8, 9 }; 352 353static const unsigned i2s2_0_pins[] = { 12 }; 354static const unsigned i2s2_1_pins[] = { 13 }; 355static const unsigned i2s2_2_pins[] = { 14 }; 356static const unsigned i2s2_3_pins[] = { 15 }; 357static const unsigned i2s2_4_pins[] = { 16 }; 358 359static const unsigned pwm4_pins[] = { 17 }; 360static const unsigned pwm5_pins[] = { 18 }; 361 362static const unsigned key0_pins[] = { 20 }; 363static const unsigned key1_pins[] = { 21 }; 364static const unsigned key2_pins[] = { 22 }; 365static const unsigned key3_pins[] = { 23 }; 366static const unsigned key4_pins[] = { 24 }; 367static const unsigned key5_pins[] = { 25 }; 368 369static const unsigned key6_pins[] = { 26 }; 370static const unsigned audio_dte0_pins[] = { 26 }; 371 372static const unsigned key7_pins[] = { 27 }; 373static const unsigned audio_dte1_pins[] = { 27 }; 374 375static const unsigned key8_pins[] = { 28 }; 376static const unsigned key9_pins[] = { 29 }; 377static const unsigned key10_pins[] = { 30 }; 378static const unsigned key11_pins[] = { 31 }; 379static const unsigned key12_pins[] = { 32 }; 380static const unsigned key13_pins[] = { 33 }; 381 382static const unsigned key14_pins[] = { 34 }; 383static const unsigned audio_dte2_pins[] = { 34 }; 384 385static const unsigned key15_pins[] = { 35 }; 386static const unsigned audio_dte3_pins[] = { 35 }; 387 388static const unsigned pwm0_pins[] = { 38 }; 389static const unsigned pwm1_pins[] = { 39 }; 390static const unsigned pwm2_pins[] = { 40 }; 391static const unsigned pwm3_pins[] = { 41 }; 392 393static const unsigned sdio0_pins[] = { 94, 95, 96, 97, 98, 99 }; 394 395static const unsigned smart_card0_pins[] = { 42, 43, 44, 46, 47 }; 396static const unsigned i2s0_0_pins[] = { 42, 43, 44, 46 }; 397static const unsigned spdif_pins[] = { 47 }; 398 399static const unsigned smart_card1_pins[] = { 48, 49, 50, 52, 53 }; 400static const unsigned i2s1_0_pins[] = { 48, 49, 50, 52 }; 401 402static const unsigned spi0_pins[] = { 54, 55, 56, 57 }; 403 404static const unsigned spi1_pins[] = { 58, 59, 60, 61 }; 405 406static const unsigned spi2_pins[] = { 62, 63, 64, 65 }; 407 408static const unsigned spi3_pins[] = { 66, 67, 68, 69 }; 409static const unsigned sw_led0_0_pins[] = { 66, 67, 68, 69 }; 410 411static const unsigned d1w_pins[] = { 10, 11 }; 412static const unsigned uart4_pins[] = { 10, 11 }; 413static const unsigned sw_led2_0_pins[] = { 10, 11 }; 414 415static const unsigned lcd_pins[] = { 126, 127, 128, 129, 130, 131, 132, 133, 416 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 417 148, 149, 150, 151, 152, 153, 154, 155 }; 418static const unsigned sram_0_pins[] = { 126, 127, 128, 129, 130, 131, 132, 133, 419 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 420 148, 149, 150, 151, 152, 153, 154, 155 }; 421static const unsigned spi5_pins[] = { 141, 142, 143, 144 }; 422 423static const unsigned uart0_pins[] = { 70, 71, 72, 73 }; 424static const unsigned sw_led0_1_pins[] = { 70, 71, 72, 73 }; 425 426static const unsigned uart1_dte_pins[] = { 75, 76, 77, 78 }; 427static const unsigned uart2_pins[] = { 75, 76, 77, 78 }; 428 429static const unsigned uart1_pins[] = { 74, 79, 80, 81 }; 430 431static const unsigned uart3_pins[] = { 82, 83 }; 432 433static const unsigned qspi_0_pins[] = { 104, 105, 106, 107 }; 434 435static const unsigned nand_pins[] = { 110, 111, 112, 113, 114, 115, 116, 117, 436 118, 119, 120, 121, 122, 123, 124, 125 }; 437 438static const unsigned sdio0_cd_pins[] = { 103 }; 439 440static const unsigned sdio0_mmc_pins[] = { 100, 101, 102 }; 441 442static const unsigned sdio1_data_0_pins[] = { 86, 87 }; 443static const unsigned can0_pins[] = { 86, 87 }; 444static const unsigned spi4_0_pins[] = { 86, 87 }; 445 446static const unsigned sdio1_data_1_pins[] = { 88, 89 }; 447static const unsigned can1_pins[] = { 88, 89 }; 448static const unsigned spi4_1_pins[] = { 88, 89 }; 449 450static const unsigned sdio1_cd_pins[] = { 93 }; 451 452static const unsigned sdio1_led_pins[] = { 84, 85 }; 453static const unsigned sw_led2_1_pins[] = { 84, 85 }; 454 455static const unsigned sdio1_mmc_pins[] = { 90, 91, 92 }; 456 457static const unsigned cam_led_pins[] = { 156, 157, 158, 159, 160 }; 458static const unsigned sw_led1_pins[] = { 156, 157, 158, 159 }; 459 460static const unsigned cam_0_pins[] = { 169, 170, 171, 169, 170 }; 461 462static const unsigned cam_1_pins[] = { 161, 162, 163, 164, 165, 166, 167, 463 168 }; 464static const unsigned sram_1_pins[] = { 161, 162, 163, 164, 165, 166, 167, 465 168 }; 466 467static const unsigned qspi_1_pins[] = { 108, 109 }; 468 469static const unsigned smart_card0_fcb_pins[] = { 45 }; 470static const unsigned i2s0_1_pins[] = { 45 }; 471 472static const unsigned smart_card1_fcb_pins[] = { 51 }; 473static const unsigned i2s1_1_pins[] = { 51 }; 474 475static const unsigned gpio0_3p3_pins[] = { 176 }; 476static const unsigned usb0_oc_pins[] = { 176 }; 477 478static const unsigned gpio1_3p3_pins[] = { 177 }; 479static const unsigned usb1_oc_pins[] = { 177 }; 480 481static const unsigned gpio2_3p3_pins[] = { 178 }; 482static const unsigned usb2_oc_pins[] = { 178 }; 483 484#define CYGNUS_PIN_GROUP(group_name, off, sh, al) \ 485{ \ 486 .name = __stringify(group_name) "_grp", \ 487 .pins = group_name ## _pins, \ 488 .num_pins = ARRAY_SIZE(group_name ## _pins), \ 489 .mux = { \ 490 .offset = off, \ 491 .shift = sh, \ 492 .alt = al, \ 493 } \ 494} 495 496/* 497 * List of Cygnus pin groups 498 */ 499static const struct cygnus_pin_group cygnus_pin_groups[] = { 500 CYGNUS_PIN_GROUP(i2s2_0, 0x0, 0, 2), 501 CYGNUS_PIN_GROUP(i2s2_1, 0x0, 4, 2), 502 CYGNUS_PIN_GROUP(i2s2_2, 0x0, 8, 2), 503 CYGNUS_PIN_GROUP(i2s2_3, 0x0, 12, 2), 504 CYGNUS_PIN_GROUP(i2s2_4, 0x0, 16, 2), 505 CYGNUS_PIN_GROUP(pwm4, 0x0, 20, 0), 506 CYGNUS_PIN_GROUP(pwm5, 0x0, 24, 2), 507 CYGNUS_PIN_GROUP(key0, 0x4, 0, 1), 508 CYGNUS_PIN_GROUP(key1, 0x4, 4, 1), 509 CYGNUS_PIN_GROUP(key2, 0x4, 8, 1), 510 CYGNUS_PIN_GROUP(key3, 0x4, 12, 1), 511 CYGNUS_PIN_GROUP(key4, 0x4, 16, 1), 512 CYGNUS_PIN_GROUP(key5, 0x4, 20, 1), 513 CYGNUS_PIN_GROUP(key6, 0x4, 24, 1), 514 CYGNUS_PIN_GROUP(audio_dte0, 0x4, 24, 2), 515 CYGNUS_PIN_GROUP(key7, 0x4, 28, 1), 516 CYGNUS_PIN_GROUP(audio_dte1, 0x4, 28, 2), 517 CYGNUS_PIN_GROUP(key8, 0x8, 0, 1), 518 CYGNUS_PIN_GROUP(key9, 0x8, 4, 1), 519 CYGNUS_PIN_GROUP(key10, 0x8, 8, 1), 520 CYGNUS_PIN_GROUP(key11, 0x8, 12, 1), 521 CYGNUS_PIN_GROUP(key12, 0x8, 16, 1), 522 CYGNUS_PIN_GROUP(key13, 0x8, 20, 1), 523 CYGNUS_PIN_GROUP(key14, 0x8, 24, 1), 524 CYGNUS_PIN_GROUP(audio_dte2, 0x8, 24, 2), 525 CYGNUS_PIN_GROUP(key15, 0x8, 28, 1), 526 CYGNUS_PIN_GROUP(audio_dte3, 0x8, 28, 2), 527 CYGNUS_PIN_GROUP(pwm0, 0xc, 0, 0), 528 CYGNUS_PIN_GROUP(pwm1, 0xc, 4, 0), 529 CYGNUS_PIN_GROUP(pwm2, 0xc, 8, 0), 530 CYGNUS_PIN_GROUP(pwm3, 0xc, 12, 0), 531 CYGNUS_PIN_GROUP(sdio0, 0xc, 16, 0), 532 CYGNUS_PIN_GROUP(smart_card0, 0xc, 20, 0), 533 CYGNUS_PIN_GROUP(i2s0_0, 0xc, 20, 1), 534 CYGNUS_PIN_GROUP(spdif, 0xc, 20, 1), 535 CYGNUS_PIN_GROUP(smart_card1, 0xc, 24, 0), 536 CYGNUS_PIN_GROUP(i2s1_0, 0xc, 24, 1), 537 CYGNUS_PIN_GROUP(spi0, 0x10, 0, 0), 538 CYGNUS_PIN_GROUP(spi1, 0x10, 4, 0), 539 CYGNUS_PIN_GROUP(spi2, 0x10, 8, 0), 540 CYGNUS_PIN_GROUP(spi3, 0x10, 12, 0), 541 CYGNUS_PIN_GROUP(sw_led0_0, 0x10, 12, 2), 542 CYGNUS_PIN_GROUP(d1w, 0x10, 16, 0), 543 CYGNUS_PIN_GROUP(uart4, 0x10, 16, 1), 544 CYGNUS_PIN_GROUP(sw_led2_0, 0x10, 16, 2), 545 CYGNUS_PIN_GROUP(lcd, 0x10, 20, 0), 546 CYGNUS_PIN_GROUP(sram_0, 0x10, 20, 1), 547 CYGNUS_PIN_GROUP(spi5, 0x10, 20, 2), 548 CYGNUS_PIN_GROUP(uart0, 0x14, 0, 0), 549 CYGNUS_PIN_GROUP(sw_led0_1, 0x14, 0, 2), 550 CYGNUS_PIN_GROUP(uart1_dte, 0x14, 4, 0), 551 CYGNUS_PIN_GROUP(uart2, 0x14, 4, 1), 552 CYGNUS_PIN_GROUP(uart1, 0x14, 8, 0), 553 CYGNUS_PIN_GROUP(uart3, 0x14, 12, 0), 554 CYGNUS_PIN_GROUP(qspi_0, 0x14, 16, 0), 555 CYGNUS_PIN_GROUP(nand, 0x14, 20, 0), 556 CYGNUS_PIN_GROUP(sdio0_cd, 0x18, 0, 0), 557 CYGNUS_PIN_GROUP(sdio0_mmc, 0x18, 4, 0), 558 CYGNUS_PIN_GROUP(sdio1_data_0, 0x18, 8, 0), 559 CYGNUS_PIN_GROUP(can0, 0x18, 8, 1), 560 CYGNUS_PIN_GROUP(spi4_0, 0x18, 8, 2), 561 CYGNUS_PIN_GROUP(sdio1_data_1, 0x18, 12, 0), 562 CYGNUS_PIN_GROUP(can1, 0x18, 12, 1), 563 CYGNUS_PIN_GROUP(spi4_1, 0x18, 12, 2), 564 CYGNUS_PIN_GROUP(sdio1_cd, 0x18, 16, 0), 565 CYGNUS_PIN_GROUP(sdio1_led, 0x18, 20, 0), 566 CYGNUS_PIN_GROUP(sw_led2_1, 0x18, 20, 2), 567 CYGNUS_PIN_GROUP(sdio1_mmc, 0x18, 24, 0), 568 CYGNUS_PIN_GROUP(cam_led, 0x1c, 0, 0), 569 CYGNUS_PIN_GROUP(sw_led1, 0x1c, 0, 1), 570 CYGNUS_PIN_GROUP(cam_0, 0x1c, 4, 0), 571 CYGNUS_PIN_GROUP(cam_1, 0x1c, 8, 0), 572 CYGNUS_PIN_GROUP(sram_1, 0x1c, 8, 1), 573 CYGNUS_PIN_GROUP(qspi_1, 0x1c, 12, 0), 574 CYGNUS_PIN_GROUP(bsc1, 0x1c, 16, 0), 575 CYGNUS_PIN_GROUP(pcie_clkreq, 0x1c, 16, 1), 576 CYGNUS_PIN_GROUP(smart_card0_fcb, 0x20, 0, 0), 577 CYGNUS_PIN_GROUP(i2s0_1, 0x20, 0, 1), 578 CYGNUS_PIN_GROUP(smart_card1_fcb, 0x20, 4, 0), 579 CYGNUS_PIN_GROUP(i2s1_1, 0x20, 4, 1), 580 CYGNUS_PIN_GROUP(gpio0_3p3, 0x28, 0, 0), 581 CYGNUS_PIN_GROUP(usb0_oc, 0x28, 0, 1), 582 CYGNUS_PIN_GROUP(gpio1_3p3, 0x28, 4, 0), 583 CYGNUS_PIN_GROUP(usb1_oc, 0x28, 4, 1), 584 CYGNUS_PIN_GROUP(gpio2_3p3, 0x28, 8, 0), 585 CYGNUS_PIN_GROUP(usb2_oc, 0x28, 8, 1), 586}; 587 588/* 589 * List of groups supported by functions 590 */ 591static const char * const i2s0_grps[] = { "i2s0_0_grp", "i2s0_1_grp" }; 592static const char * const i2s1_grps[] = { "i2s1_0_grp", "i2s1_1_grp" }; 593static const char * const i2s2_grps[] = { "i2s2_0_grp", "i2s2_1_grp", 594 "i2s2_2_grp", "i2s2_3_grp", "i2s2_4_grp" }; 595static const char * const spdif_grps[] = { "spdif_grp" }; 596static const char * const pwm0_grps[] = { "pwm0_grp" }; 597static const char * const pwm1_grps[] = { "pwm1_grp" }; 598static const char * const pwm2_grps[] = { "pwm2_grp" }; 599static const char * const pwm3_grps[] = { "pwm3_grp" }; 600static const char * const pwm4_grps[] = { "pwm4_grp" }; 601static const char * const pwm5_grps[] = { "pwm5_grp" }; 602static const char * const key_grps[] = { "key0_grp", "key1_grp", "key2_grp", 603 "key3_grp", "key4_grp", "key5_grp", "key6_grp", "key7_grp", "key8_grp", 604 "key9_grp", "key10_grp", "key11_grp", "key12_grp", "key13_grp", 605 "key14_grp", "key15_grp" }; 606static const char * const audio_dte_grps[] = { "audio_dte0_grp", 607 "audio_dte1_grp", "audio_dte2_grp", "audio_dte3_grp" }; 608static const char * const smart_card0_grps[] = { "smart_card0_grp", 609 "smart_card0_fcb_grp" }; 610static const char * const smart_card1_grps[] = { "smart_card1_grp", 611 "smart_card1_fcb_grp" }; 612static const char * const spi0_grps[] = { "spi0_grp" }; 613static const char * const spi1_grps[] = { "spi1_grp" }; 614static const char * const spi2_grps[] = { "spi2_grp" }; 615static const char * const spi3_grps[] = { "spi3_grp" }; 616static const char * const spi4_grps[] = { "spi4_0_grp", "spi4_1_grp" }; 617static const char * const spi5_grps[] = { "spi5_grp" }; 618 619static const char * const sw_led0_grps[] = { "sw_led0_0_grp", 620 "sw_led0_1_grp" }; 621static const char * const sw_led1_grps[] = { "sw_led1_grp" }; 622static const char * const sw_led2_grps[] = { "sw_led2_0_grp", 623 "sw_led2_1_grp" }; 624static const char * const d1w_grps[] = { "d1w_grp" }; 625static const char * const lcd_grps[] = { "lcd_grp" }; 626static const char * const sram_grps[] = { "sram_0_grp", "sram_1_grp" }; 627 628static const char * const uart0_grps[] = { "uart0_grp" }; 629static const char * const uart1_grps[] = { "uart1_grp", "uart1_dte_grp" }; 630static const char * const uart2_grps[] = { "uart2_grp" }; 631static const char * const uart3_grps[] = { "uart3_grp" }; 632static const char * const uart4_grps[] = { "uart4_grp" }; 633static const char * const qspi_grps[] = { "qspi_0_grp", "qspi_1_grp" }; 634static const char * const nand_grps[] = { "nand_grp" }; 635static const char * const sdio0_grps[] = { "sdio0_grp", "sdio0_cd_grp", 636 "sdio0_mmc_grp" }; 637static const char * const sdio1_grps[] = { "sdio1_data_0_grp", 638 "sdio1_data_1_grp", "sdio1_cd_grp", "sdio1_led_grp", "sdio1_mmc_grp" }; 639static const char * const can0_grps[] = { "can0_grp" }; 640static const char * const can1_grps[] = { "can1_grp" }; 641static const char * const cam_grps[] = { "cam_led_grp", "cam_0_grp", 642 "cam_1_grp" }; 643static const char * const bsc1_grps[] = { "bsc1_grp" }; 644static const char * const pcie_clkreq_grps[] = { "pcie_clkreq_grp" }; 645static const char * const usb0_oc_grps[] = { "usb0_oc_grp" }; 646static const char * const usb1_oc_grps[] = { "usb1_oc_grp" }; 647static const char * const usb2_oc_grps[] = { "usb2_oc_grp" }; 648 649#define CYGNUS_PIN_FUNCTION(func) \ 650{ \ 651 .name = #func, \ 652 .groups = func ## _grps, \ 653 .num_groups = ARRAY_SIZE(func ## _grps), \ 654} 655 656/* 657 * List of supported functions in Cygnus 658 */ 659static const struct cygnus_pin_function cygnus_pin_functions[] = { 660 CYGNUS_PIN_FUNCTION(i2s0), 661 CYGNUS_PIN_FUNCTION(i2s1), 662 CYGNUS_PIN_FUNCTION(i2s2), 663 CYGNUS_PIN_FUNCTION(spdif), 664 CYGNUS_PIN_FUNCTION(pwm0), 665 CYGNUS_PIN_FUNCTION(pwm1), 666 CYGNUS_PIN_FUNCTION(pwm2), 667 CYGNUS_PIN_FUNCTION(pwm3), 668 CYGNUS_PIN_FUNCTION(pwm4), 669 CYGNUS_PIN_FUNCTION(pwm5), 670 CYGNUS_PIN_FUNCTION(key), 671 CYGNUS_PIN_FUNCTION(audio_dte), 672 CYGNUS_PIN_FUNCTION(smart_card0), 673 CYGNUS_PIN_FUNCTION(smart_card1), 674 CYGNUS_PIN_FUNCTION(spi0), 675 CYGNUS_PIN_FUNCTION(spi1), 676 CYGNUS_PIN_FUNCTION(spi2), 677 CYGNUS_PIN_FUNCTION(spi3), 678 CYGNUS_PIN_FUNCTION(spi4), 679 CYGNUS_PIN_FUNCTION(spi5), 680 CYGNUS_PIN_FUNCTION(sw_led0), 681 CYGNUS_PIN_FUNCTION(sw_led1), 682 CYGNUS_PIN_FUNCTION(sw_led2), 683 CYGNUS_PIN_FUNCTION(d1w), 684 CYGNUS_PIN_FUNCTION(lcd), 685 CYGNUS_PIN_FUNCTION(sram), 686 CYGNUS_PIN_FUNCTION(uart0), 687 CYGNUS_PIN_FUNCTION(uart1), 688 CYGNUS_PIN_FUNCTION(uart2), 689 CYGNUS_PIN_FUNCTION(uart3), 690 CYGNUS_PIN_FUNCTION(uart4), 691 CYGNUS_PIN_FUNCTION(qspi), 692 CYGNUS_PIN_FUNCTION(nand), 693 CYGNUS_PIN_FUNCTION(sdio0), 694 CYGNUS_PIN_FUNCTION(sdio1), 695 CYGNUS_PIN_FUNCTION(can0), 696 CYGNUS_PIN_FUNCTION(can1), 697 CYGNUS_PIN_FUNCTION(cam), 698 CYGNUS_PIN_FUNCTION(bsc1), 699 CYGNUS_PIN_FUNCTION(pcie_clkreq), 700 CYGNUS_PIN_FUNCTION(usb0_oc), 701 CYGNUS_PIN_FUNCTION(usb1_oc), 702 CYGNUS_PIN_FUNCTION(usb2_oc), 703}; 704 705static int cygnus_get_groups_count(struct pinctrl_dev *pctrl_dev) 706{ 707 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 708 709 return pinctrl->num_groups; 710} 711 712static const char *cygnus_get_group_name(struct pinctrl_dev *pctrl_dev, 713 unsigned selector) 714{ 715 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 716 717 return pinctrl->groups[selector].name; 718} 719 720static int cygnus_get_group_pins(struct pinctrl_dev *pctrl_dev, 721 unsigned selector, const unsigned **pins, 722 unsigned *num_pins) 723{ 724 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 725 726 *pins = pinctrl->groups[selector].pins; 727 *num_pins = pinctrl->groups[selector].num_pins; 728 729 return 0; 730} 731 732static void cygnus_pin_dbg_show(struct pinctrl_dev *pctrl_dev, 733 struct seq_file *s, unsigned offset) 734{ 735 seq_printf(s, " %s", dev_name(pctrl_dev->dev)); 736} 737 738static const struct pinctrl_ops cygnus_pinctrl_ops = { 739 .get_groups_count = cygnus_get_groups_count, 740 .get_group_name = cygnus_get_group_name, 741 .get_group_pins = cygnus_get_group_pins, 742 .pin_dbg_show = cygnus_pin_dbg_show, 743 .dt_node_to_map = pinconf_generic_dt_node_to_map_group, 744 .dt_free_map = pinctrl_utils_free_map, 745}; 746 747static int cygnus_get_functions_count(struct pinctrl_dev *pctrl_dev) 748{ 749 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 750 751 return pinctrl->num_functions; 752} 753 754static const char *cygnus_get_function_name(struct pinctrl_dev *pctrl_dev, 755 unsigned selector) 756{ 757 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 758 759 return pinctrl->functions[selector].name; 760} 761 762static int cygnus_get_function_groups(struct pinctrl_dev *pctrl_dev, 763 unsigned selector, 764 const char * const **groups, 765 unsigned * const num_groups) 766{ 767 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 768 769 *groups = pinctrl->functions[selector].groups; 770 *num_groups = pinctrl->functions[selector].num_groups; 771 772 return 0; 773} 774 775static int cygnus_pinmux_set(struct cygnus_pinctrl *pinctrl, 776 const struct cygnus_pin_function *func, 777 const struct cygnus_pin_group *grp, 778 struct cygnus_mux_log *mux_log) 779{ 780 const struct cygnus_mux *mux = &grp->mux; 781 int i; 782 u32 val, mask = 0x7; 783 unsigned long flags; 784 785 for (i = 0; i < CYGNUS_NUM_IOMUX; i++) { 786 if (mux->offset != mux_log[i].mux.offset || 787 mux->shift != mux_log[i].mux.shift) 788 continue; 789 790 /* match found if we reach here */ 791 792 /* if this is a new configuration, just do it! */ 793 if (!mux_log[i].is_configured) 794 break; 795 796 /* 797 * IOMUX has been configured previously and one is trying to 798 * configure it to a different function 799 */ 800 if (mux_log[i].mux.alt != mux->alt) { 801 dev_err(pinctrl->dev, 802 "double configuration error detected!\n"); 803 dev_err(pinctrl->dev, "func:%s grp:%s\n", 804 func->name, grp->name); 805 return -EINVAL; 806 } else { 807 /* 808 * One tries to configure it to the same function. 809 * Just quit and don't bother 810 */ 811 return 0; 812 } 813 } 814 815 mux_log[i].mux.alt = mux->alt; 816 mux_log[i].is_configured = true; 817 818 spin_lock_irqsave(&pinctrl->lock, flags); 819 820 val = readl(pinctrl->base0 + grp->mux.offset); 821 val &= ~(mask << grp->mux.shift); 822 val |= grp->mux.alt << grp->mux.shift; 823 writel(val, pinctrl->base0 + grp->mux.offset); 824 825 spin_unlock_irqrestore(&pinctrl->lock, flags); 826 827 return 0; 828} 829 830static int cygnus_pinmux_set_mux(struct pinctrl_dev *pctrl_dev, 831 unsigned func_select, unsigned grp_select) 832{ 833 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 834 const struct cygnus_pin_function *func = 835 &pinctrl->functions[func_select]; 836 const struct cygnus_pin_group *grp = &pinctrl->groups[grp_select]; 837 838 dev_dbg(pctrl_dev->dev, "func:%u name:%s grp:%u name:%s\n", 839 func_select, func->name, grp_select, grp->name); 840 841 dev_dbg(pctrl_dev->dev, "offset:0x%08x shift:%u alt:%u\n", 842 grp->mux.offset, grp->mux.shift, grp->mux.alt); 843 844 return cygnus_pinmux_set(pinctrl, func, grp, pinctrl->mux_log); 845} 846 847static int cygnus_gpio_request_enable(struct pinctrl_dev *pctrl_dev, 848 struct pinctrl_gpio_range *range, 849 unsigned pin) 850{ 851 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 852 const struct cygnus_gpio_mux *mux = pctrl_dev->desc->pins[pin].drv_data; 853 u32 val; 854 unsigned long flags; 855 856 /* not all pins support GPIO pinmux override */ 857 if (!mux->is_supported) 858 return -ENOTSUPP; 859 860 spin_lock_irqsave(&pinctrl->lock, flags); 861 862 val = readl(pinctrl->base1 + mux->offset); 863 val |= 0x3 << mux->shift; 864 writel(val, pinctrl->base1 + mux->offset); 865 866 spin_unlock_irqrestore(&pinctrl->lock, flags); 867 868 dev_dbg(pctrl_dev->dev, 869 "gpio request enable pin=%u offset=0x%x shift=%u\n", 870 pin, mux->offset, mux->shift); 871 872 return 0; 873} 874 875static void cygnus_gpio_disable_free(struct pinctrl_dev *pctrl_dev, 876 struct pinctrl_gpio_range *range, 877 unsigned pin) 878{ 879 struct cygnus_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 880 struct cygnus_gpio_mux *mux = pctrl_dev->desc->pins[pin].drv_data; 881 u32 val; 882 unsigned long flags; 883 884 if (!mux->is_supported) 885 return; 886 887 spin_lock_irqsave(&pinctrl->lock, flags); 888 889 val = readl(pinctrl->base1 + mux->offset); 890 val &= ~(0x3 << mux->shift); 891 writel(val, pinctrl->base1 + mux->offset); 892 893 spin_unlock_irqrestore(&pinctrl->lock, flags); 894 895 dev_err(pctrl_dev->dev, 896 "gpio disable free pin=%u offset=0x%x shift=%u\n", 897 pin, mux->offset, mux->shift); 898} 899 900static const struct pinmux_ops cygnus_pinmux_ops = { 901 .get_functions_count = cygnus_get_functions_count, 902 .get_function_name = cygnus_get_function_name, 903 .get_function_groups = cygnus_get_function_groups, 904 .set_mux = cygnus_pinmux_set_mux, 905 .gpio_request_enable = cygnus_gpio_request_enable, 906 .gpio_disable_free = cygnus_gpio_disable_free, 907}; 908 909static struct pinctrl_desc cygnus_pinctrl_desc = { 910 .name = "cygnus-pinmux", 911 .pctlops = &cygnus_pinctrl_ops, 912 .pmxops = &cygnus_pinmux_ops, 913}; 914 915static int cygnus_mux_log_init(struct cygnus_pinctrl *pinctrl) 916{ 917 struct cygnus_mux_log *log; 918 unsigned int i, j; 919 920 pinctrl->mux_log = devm_kcalloc(pinctrl->dev, CYGNUS_NUM_IOMUX, 921 sizeof(struct cygnus_mux_log), 922 GFP_KERNEL); 923 if (!pinctrl->mux_log) 924 return -ENOMEM; 925 926 for (i = 0; i < CYGNUS_NUM_IOMUX_REGS; i++) { 927 for (j = 0; j < CYGNUS_NUM_MUX_PER_REG; j++) { 928 log = &pinctrl->mux_log[i * CYGNUS_NUM_MUX_PER_REG 929 + j]; 930 log->mux.offset = i * 4; 931 log->mux.shift = j * 4; 932 log->mux.alt = 0; 933 log->is_configured = false; 934 } 935 } 936 937 return 0; 938} 939 940static int cygnus_pinmux_probe(struct platform_device *pdev) 941{ 942 struct cygnus_pinctrl *pinctrl; 943 int i, ret; 944 struct pinctrl_pin_desc *pins; 945 unsigned num_pins = ARRAY_SIZE(cygnus_pins); 946 947 pinctrl = devm_kzalloc(&pdev->dev, sizeof(*pinctrl), GFP_KERNEL); 948 if (!pinctrl) 949 return -ENOMEM; 950 951 pinctrl->dev = &pdev->dev; 952 platform_set_drvdata(pdev, pinctrl); 953 spin_lock_init(&pinctrl->lock); 954 955 pinctrl->base0 = devm_platform_ioremap_resource(pdev, 0); 956 if (IS_ERR(pinctrl->base0)) { 957 dev_err(&pdev->dev, "unable to map I/O space\n"); 958 return PTR_ERR(pinctrl->base0); 959 } 960 961 pinctrl->base1 = devm_platform_ioremap_resource(pdev, 1); 962 if (IS_ERR(pinctrl->base1)) { 963 dev_err(&pdev->dev, "unable to map I/O space\n"); 964 return PTR_ERR(pinctrl->base1); 965 } 966 967 ret = cygnus_mux_log_init(pinctrl); 968 if (ret) { 969 dev_err(&pdev->dev, "unable to initialize IOMUX log\n"); 970 return ret; 971 } 972 973 pins = devm_kcalloc(&pdev->dev, num_pins, sizeof(*pins), GFP_KERNEL); 974 if (!pins) 975 return -ENOMEM; 976 977 for (i = 0; i < num_pins; i++) { 978 pins[i].number = cygnus_pins[i].pin; 979 pins[i].name = cygnus_pins[i].name; 980 pins[i].drv_data = &cygnus_pins[i].gpio_mux; 981 } 982 983 pinctrl->groups = cygnus_pin_groups; 984 pinctrl->num_groups = ARRAY_SIZE(cygnus_pin_groups); 985 pinctrl->functions = cygnus_pin_functions; 986 pinctrl->num_functions = ARRAY_SIZE(cygnus_pin_functions); 987 cygnus_pinctrl_desc.pins = pins; 988 cygnus_pinctrl_desc.npins = num_pins; 989 990 pinctrl->pctl = devm_pinctrl_register(&pdev->dev, &cygnus_pinctrl_desc, 991 pinctrl); 992 if (IS_ERR(pinctrl->pctl)) { 993 dev_err(&pdev->dev, "unable to register Cygnus IOMUX pinctrl\n"); 994 return PTR_ERR(pinctrl->pctl); 995 } 996 997 return 0; 998} 999 1000static const struct of_device_id cygnus_pinmux_of_match[] = { 1001 { .compatible = "brcm,cygnus-pinmux" }, 1002 { } 1003}; 1004 1005static struct platform_driver cygnus_pinmux_driver = { 1006 .driver = { 1007 .name = "cygnus-pinmux", 1008 .of_match_table = cygnus_pinmux_of_match, 1009 .suppress_bind_attrs = true, 1010 }, 1011 .probe = cygnus_pinmux_probe, 1012}; 1013 1014static int __init cygnus_pinmux_init(void) 1015{ 1016 return platform_driver_register(&cygnus_pinmux_driver); 1017} 1018arch_initcall(cygnus_pinmux_init); 1019