arch/arm/mach-imx/mach-mx31ads.c

   1 /*
   2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   4  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/types.h>
  18 #include <linux/init.h>
  19 #include <linux/clk.h>
  20 #include <linux/serial_8250.h>
  21 #include <linux/gpio.h>
  22 #include <linux/i2c.h>
  23 #include <linux/irq.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/time.h>
  28 #include <asm/memory.h>
  29 #include <asm/mach/map.h>
  30 #include <mach/common.h>
  31 #include <mach/board-mx31ads.h>
  32 #include <mach/iomux-mx3.h>
  33
  34 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
  35 #include <linux/mfd/wm8350/audio.h>
  36 #include <linux/mfd/wm8350/core.h>
  37 #include <linux/mfd/wm8350/pmic.h>
  38 #endif
  39
  40 #include "devices-imx31.h"
  41
  42 /* PBC Board interrupt status register */
  43 #define PBC_INTSTATUS           0x000016
  44
  45 /* PBC Board interrupt current status register */
  46 #define PBC_INTCURR_STATUS      0x000018
  47
  48 /* PBC Interrupt mask register set address */
  49 #define PBC_INTMASK_SET         0x00001A
  50
  51 /* PBC Interrupt mask register clear address */
  52 #define PBC_INTMASK_CLEAR       0x00001C
  53
  54 /* External UART A */
  55 #define PBC_SC16C652_UARTA      0x010000
  56
  57 /* External UART B */
  58 #define PBC_SC16C652_UARTB      0x010010
  59
  60 #define PBC_INTSTATUS_REG       (PBC_INTSTATUS + PBC_BASE_ADDRESS)
  61 #define PBC_INTMASK_SET_REG     (PBC_INTMASK_SET + PBC_BASE_ADDRESS)
  62 #define PBC_INTMASK_CLEAR_REG   (PBC_INTMASK_CLEAR + PBC_BASE_ADDRESS)
  63 #define EXPIO_PARENT_INT        IOMUX_TO_IRQ(MX31_PIN_GPIO1_4)
  64
  65 #define MXC_IRQ_TO_EXPIO(irq)   ((irq) - MXC_EXP_IO_BASE)
  66
  67 #define EXPIO_INT_XUART_INTA    (MXC_EXP_IO_BASE + 10)
  68 #define EXPIO_INT_XUART_INTB    (MXC_EXP_IO_BASE + 11)
  69
  70 #define MXC_MAX_EXP_IO_LINES    16
  71
  72 /*
  73  * The serial port definition structure.
  74  */
  75 static struct plat_serial8250_port serial_platform_data[] = {
  76         {
  77                 .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
  78                 .mapbase  = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTA),
  79                 .irq      = EXPIO_INT_XUART_INTA,
  80                 .uartclk  = 14745600,
  81                 .regshift = 0,
  82                 .iotype   = UPIO_MEM,
  83                 .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
  84         }, {
  85                 .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
  86                 .mapbase  = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTB),
  87                 .irq      = EXPIO_INT_XUART_INTB,
  88                 .uartclk  = 14745600,
  89                 .regshift = 0,
  90                 .iotype   = UPIO_MEM,
  91                 .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
  92         },
  93         {},
  94 };
  95
  96 static struct platform_device serial_device = {
  97         .name   = "serial8250",
  98         .id     = 0,
  99         .dev    = {
 100                 .platform_data = serial_platform_data,
 101         },
 102 };
 103
 104 static int __init mxc_init_extuart(void)
 105 {
 106         return platform_device_register(&serial_device);
 107 }
 108
 109 static const struct imxuart_platform_data uart_pdata __initconst = {
 110         .flags = IMXUART_HAVE_RTSCTS,
 111 };
 112
 113 static unsigned int uart_pins[] = {
 114         MX31_PIN_CTS1__CTS1,
 115         MX31_PIN_RTS1__RTS1,
 116         MX31_PIN_TXD1__TXD1,
 117         MX31_PIN_RXD1__RXD1
 118 };
 119
 120 static inline void mxc_init_imx_uart(void)
 121 {
 122         mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins), "uart-0");
 123         imx31_add_imx_uart0(&uart_pdata);
 124 }
 125
 126 static void mx31ads_expio_irq_handler(u32 irq, struct irq_desc *desc)
 127 {
 128         u32 imr_val;
 129         u32 int_valid;
 130         u32 expio_irq;
 131
 132         imr_val = __raw_readw(PBC_INTMASK_SET_REG);
 133         int_valid = __raw_readw(PBC_INTSTATUS_REG) & imr_val;
 134
 135         expio_irq = MXC_EXP_IO_BASE;
 136         for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
 137                 if ((int_valid & 1) == 0)
 138                         continue;
 139
 140                 generic_handle_irq(expio_irq);
 141         }
 142 }
 143
 144 /*
 145  * Disable an expio pin's interrupt by setting the bit in the imr.
 146  * @param d     an expio virtual irq description
 147  */
 148 static void expio_mask_irq(struct irq_data *d)
 149 {
 150         u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 151         /* mask the interrupt */
 152         __raw_writew(1 << expio, PBC_INTMASK_CLEAR_REG);
 153         __raw_readw(PBC_INTMASK_CLEAR_REG);
 154 }
 155
 156 /*
 157  * Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.
 158  * @param d     an expio virtual irq description
 159  */
 160 static void expio_ack_irq(struct irq_data *d)
 161 {
 162         u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 163         /* clear the interrupt status */
 164         __raw_writew(1 << expio, PBC_INTSTATUS_REG);
 165 }
 166
 167 /*
 168  * Enable a expio pin's interrupt by clearing the bit in the imr.
 169  * @param d     an expio virtual irq description
 170  */
 171 static void expio_unmask_irq(struct irq_data *d)
 172 {
 173         u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 174         /* unmask the interrupt */
 175         __raw_writew(1 << expio, PBC_INTMASK_SET_REG);
 176 }
 177
 178 static struct irq_chip expio_irq_chip = {
 179         .name = "EXPIO(CPLD)",
 180         .irq_ack = expio_ack_irq,
 181         .irq_mask = expio_mask_irq,
 182         .irq_unmask = expio_unmask_irq,
 183 };
 184
 185 static void __init mx31ads_init_expio(void)
 186 {
 187         int i;
 188
 189         printk(KERN_INFO "MX31ADS EXPIO(CPLD) hardware\n");
 190
 191         /*
 192          * Configure INT line as GPIO input
 193          */
 194         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_GPIO1_4, IOMUX_CONFIG_GPIO), "expio");
 195
 196         /* disable the interrupt and clear the status */
 197         __raw_writew(0xFFFF, PBC_INTMASK_CLEAR_REG);
 198         __raw_writew(0xFFFF, PBC_INTSTATUS_REG);
 199         for (i = MXC_EXP_IO_BASE; i < (MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES);
 200              i++) {
 201                 irq_set_chip_and_handler(i, &expio_irq_chip, handle_level_irq);
 202                 set_irq_flags(i, IRQF_VALID);
 203         }
 204         irq_set_irq_type(EXPIO_PARENT_INT, IRQ_TYPE_LEVEL_HIGH);
 205         irq_set_chained_handler(EXPIO_PARENT_INT, mx31ads_expio_irq_handler);
 206 }
 207
 208 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 209 /* This section defines setup for the Wolfson Microelectronics
 210  * 1133-EV1 PMU/audio board.  When other PMU boards are supported the
 211  * regulator definitions may be shared with them, but for now they can
 212  * only be used with this board so would generate warnings about
 213  * unused statics and some of the configuration is specific to this
 214  * module.
 215  */
 216
 217 /* CPU */
 218 static struct regulator_consumer_supply sw1a_consumers[] = {
 219         {
 220                 .supply = "cpu_vcc",
 221         }
 222 };
 223
 224 static struct regulator_init_data sw1a_data = {
 225         .constraints = {
 226                 .name = "SW1A",
 227                 .min_uV = 1275000,
 228                 .max_uV = 1600000,
 229                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 230                                   REGULATOR_CHANGE_MODE,
 231                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 232                                     REGULATOR_MODE_FAST,
 233                 .state_mem = {
 234                          .uV = 1400000,
 235                          .mode = REGULATOR_MODE_NORMAL,
 236                          .enabled = 1,
 237                  },
 238                 .initial_state = PM_SUSPEND_MEM,
 239                 .always_on = 1,
 240                 .boot_on = 1,
 241         },
 242         .num_consumer_supplies = ARRAY_SIZE(sw1a_consumers),
 243         .consumer_supplies = sw1a_consumers,
 244 };
 245
 246 /* System IO - High */
 247 static struct regulator_init_data viohi_data = {
 248         .constraints = {
 249                 .name = "VIOHO",
 250                 .min_uV = 2800000,
 251                 .max_uV = 2800000,
 252                 .state_mem = {
 253                          .uV = 2800000,
 254                          .mode = REGULATOR_MODE_NORMAL,
 255                          .enabled = 1,
 256                  },
 257                 .initial_state = PM_SUSPEND_MEM,
 258                 .always_on = 1,
 259                 .boot_on = 1,
 260         },
 261 };
 262
 263 /* System IO - Low */
 264 static struct regulator_init_data violo_data = {
 265         .constraints = {
 266                 .name = "VIOLO",
 267                 .min_uV = 1800000,
 268                 .max_uV = 1800000,
 269                 .state_mem = {
 270                          .uV = 1800000,
 271                          .mode = REGULATOR_MODE_NORMAL,
 272                          .enabled = 1,
 273                  },
 274                 .initial_state = PM_SUSPEND_MEM,
 275                 .always_on = 1,
 276                 .boot_on = 1,
 277         },
 278 };
 279
 280 /* DDR RAM */
 281 static struct regulator_init_data sw2a_data = {
 282         .constraints = {
 283                 .name = "SW2A",
 284                 .min_uV = 1800000,
 285                 .max_uV = 1800000,
 286                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 287                 .state_mem = {
 288                          .uV = 1800000,
 289                          .mode = REGULATOR_MODE_NORMAL,
 290                          .enabled = 1,
 291                  },
 292                 .state_disk = {
 293                          .mode = REGULATOR_MODE_NORMAL,
 294                          .enabled = 0,
 295                  },
 296                 .always_on = 1,
 297                 .boot_on = 1,
 298                 .initial_state = PM_SUSPEND_MEM,
 299         },
 300 };
 301
 302 static struct regulator_init_data ldo1_data = {
 303         .constraints = {
 304                 .name = "VCAM/VMMC1/VMMC2",
 305                 .min_uV = 2800000,
 306                 .max_uV = 2800000,
 307                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 308                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 309                 .apply_uV = 1,
 310         },
 311 };
 312
 313 static struct regulator_consumer_supply ldo2_consumers[] = {
 314         { .supply = "AVDD", .dev_name = "1-001a" },
 315         { .supply = "HPVDD", .dev_name = "1-001a" },
 316 };
 317
 318 /* CODEC and SIM */
 319 static struct regulator_init_data ldo2_data = {
 320         .constraints = {
 321                 .name = "VESIM/VSIM/AVDD",
 322                 .min_uV = 3300000,
 323                 .max_uV = 3300000,
 324                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 325                 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 326                 .apply_uV = 1,
 327         },
 328         .num_consumer_supplies = ARRAY_SIZE(ldo2_consumers),
 329         .consumer_supplies = ldo2_consumers,
 330 };
 331
 332 /* General */
 333 static struct regulator_init_data vdig_data = {
 334         .constraints = {
 335                 .name = "VDIG",
 336                 .min_uV = 1500000,
 337                 .max_uV = 1500000,
 338                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 339                 .apply_uV = 1,
 340                 .always_on = 1,
 341                 .boot_on = 1,
 342         },
 343 };
 344
 345 /* Tranceivers */
 346 static struct regulator_init_data ldo4_data = {
 347         .constraints = {
 348                 .name = "VRF1/CVDD_2.775",
 349                 .min_uV = 2500000,
 350                 .max_uV = 2500000,
 351                 .valid_modes_mask = REGULATOR_MODE_NORMAL,
 352                 .apply_uV = 1,
 353                 .always_on = 1,
 354                 .boot_on = 1,
 355         },
 356 };
 357
 358 static struct wm8350_led_platform_data wm8350_led_data = {
 359         .name            = "wm8350:white",
 360         .default_trigger = "heartbeat",
 361         .max_uA          = 27899,
 362 };
 363
 364 static struct wm8350_audio_platform_data imx32ads_wm8350_setup = {
 365         .vmid_discharge_msecs = 1000,
 366         .drain_msecs = 30,
 367         .cap_discharge_msecs = 700,
 368         .vmid_charge_msecs = 700,
 369         .vmid_s_curve = WM8350_S_CURVE_SLOW,
 370         .dis_out4 = WM8350_DISCHARGE_SLOW,
 371         .dis_out3 = WM8350_DISCHARGE_SLOW,
 372         .dis_out2 = WM8350_DISCHARGE_SLOW,
 373         .dis_out1 = WM8350_DISCHARGE_SLOW,
 374         .vroi_out4 = WM8350_TIE_OFF_500R,
 375         .vroi_out3 = WM8350_TIE_OFF_500R,
 376         .vroi_out2 = WM8350_TIE_OFF_500R,
 377         .vroi_out1 = WM8350_TIE_OFF_500R,
 378         .vroi_enable = 0,
 379         .codec_current_on = WM8350_CODEC_ISEL_1_0,
 380         .codec_current_standby = WM8350_CODEC_ISEL_0_5,
 381         .codec_current_charge = WM8350_CODEC_ISEL_1_5,
 382 };
 383
 384 static int mx31_wm8350_init(struct wm8350 *wm8350)
 385 {
 386         wm8350_gpio_config(wm8350, 0, WM8350_GPIO_DIR_IN,
 387                            WM8350_GPIO0_PWR_ON_IN, WM8350_GPIO_ACTIVE_LOW,
 388                            WM8350_GPIO_PULL_UP, WM8350_GPIO_INVERT_OFF,
 389                            WM8350_GPIO_DEBOUNCE_ON);
 390
 391         wm8350_gpio_config(wm8350, 3, WM8350_GPIO_DIR_IN,
 392                            WM8350_GPIO3_PWR_OFF_IN, WM8350_GPIO_ACTIVE_HIGH,
 393                            WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 394                            WM8350_GPIO_DEBOUNCE_ON);
 395
 396         wm8350_gpio_config(wm8350, 4, WM8350_GPIO_DIR_IN,
 397                            WM8350_GPIO4_MR_IN, WM8350_GPIO_ACTIVE_HIGH,
 398                            WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 399                            WM8350_GPIO_DEBOUNCE_OFF);
 400
 401         wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_IN,
 402                            WM8350_GPIO7_HIBERNATE_IN, WM8350_GPIO_ACTIVE_HIGH,
 403                            WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 404                            WM8350_GPIO_DEBOUNCE_OFF);
 405
 406         wm8350_gpio_config(wm8350, 6, WM8350_GPIO_DIR_OUT,
 407                            WM8350_GPIO6_SDOUT_OUT, WM8350_GPIO_ACTIVE_HIGH,
 408                            WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 409                            WM8350_GPIO_DEBOUNCE_OFF);
 410
 411         wm8350_gpio_config(wm8350, 8, WM8350_GPIO_DIR_OUT,
 412                            WM8350_GPIO8_VCC_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
 413                            WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 414                            WM8350_GPIO_DEBOUNCE_OFF);
 415
 416         wm8350_gpio_config(wm8350, 9, WM8350_GPIO_DIR_OUT,
 417                            WM8350_GPIO9_BATT_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
 418                            WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 419                            WM8350_GPIO_DEBOUNCE_OFF);
 420
 421         wm8350_register_regulator(wm8350, WM8350_DCDC_1, &sw1a_data);
 422         wm8350_register_regulator(wm8350, WM8350_DCDC_3, &viohi_data);
 423         wm8350_register_regulator(wm8350, WM8350_DCDC_4, &violo_data);
 424         wm8350_register_regulator(wm8350, WM8350_DCDC_6, &sw2a_data);
 425         wm8350_register_regulator(wm8350, WM8350_LDO_1, &ldo1_data);
 426         wm8350_register_regulator(wm8350, WM8350_LDO_2, &ldo2_data);
 427         wm8350_register_regulator(wm8350, WM8350_LDO_3, &vdig_data);
 428         wm8350_register_regulator(wm8350, WM8350_LDO_4, &ldo4_data);
 429
 430         /* LEDs */
 431         wm8350_dcdc_set_slot(wm8350, WM8350_DCDC_5, 1, 1,
 432                              WM8350_DC5_ERRACT_SHUTDOWN_CONV);
 433         wm8350_isink_set_flash(wm8350, WM8350_ISINK_A,
 434                                WM8350_ISINK_FLASH_DISABLE,
 435                                WM8350_ISINK_FLASH_TRIG_BIT,
 436                                WM8350_ISINK_FLASH_DUR_32MS,
 437                                WM8350_ISINK_FLASH_ON_INSTANT,
 438                                WM8350_ISINK_FLASH_OFF_INSTANT,
 439                                WM8350_ISINK_FLASH_MODE_EN);
 440         wm8350_dcdc25_set_mode(wm8350, WM8350_DCDC_5,
 441                                WM8350_ISINK_MODE_BOOST,
 442                                WM8350_ISINK_ILIM_NORMAL,
 443                                WM8350_DC5_RMP_20V,
 444                                WM8350_DC5_FBSRC_ISINKA);
 445         wm8350_register_led(wm8350, 0, WM8350_DCDC_5, WM8350_ISINK_A,
 446                             &wm8350_led_data);
 447
 448         wm8350->codec.platform_data = &imx32ads_wm8350_setup;
 449
 450         regulator_has_full_constraints();
 451
 452         return 0;
 453 }
 454
 455 static struct wm8350_platform_data __initdata mx31_wm8350_pdata = {
 456         .init = mx31_wm8350_init,
 457         .irq_base = MXC_BOARD_IRQ_START + MXC_MAX_EXP_IO_LINES,
 458 };
 459 #endif
 460
 461 static struct i2c_board_info __initdata mx31ads_i2c1_devices[] = {
 462 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 463         {
 464                 I2C_BOARD_INFO("wm8350", 0x1a),
 465                 .platform_data = &mx31_wm8350_pdata,
 466                 .irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 467         },
 468 #endif
 469 };
 470
 471 static void __init mxc_init_i2c(void)
 472 {
 473         i2c_register_board_info(1, mx31ads_i2c1_devices,
 474                                 ARRAY_SIZE(mx31ads_i2c1_devices));
 475
 476         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MOSI, IOMUX_CONFIG_ALT1));
 477         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MISO, IOMUX_CONFIG_ALT1));
 478
 479         imx31_add_imx_i2c1(NULL);
 480 }
 481
 482 static unsigned int ssi_pins[] = {
 483         MX31_PIN_SFS5__SFS5,
 484         MX31_PIN_SCK5__SCK5,
 485         MX31_PIN_SRXD5__SRXD5,
 486         MX31_PIN_STXD5__STXD5,
 487 };
 488
 489 static void __init mxc_init_audio(void)
 490 {
 491         imx31_add_imx_ssi(0, NULL);
 492         mxc_iomux_setup_multiple_pins(ssi_pins, ARRAY_SIZE(ssi_pins), "ssi");
 493 }
 494
 495 /* static mappings */
 496 static struct map_desc mx31ads_io_desc[] __initdata = {
 497         {
 498                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
 499                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 500                 .length         = MX31_CS4_SIZE / 2,
 501                 .type           = MT_DEVICE
 502         },
 503 };
 504
 505 static void __init mx31ads_map_io(void)
 506 {
 507         mx31_map_io();
 508         iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
 509 }
 510
 511 static void __init mx31ads_init_irq(void)
 512 {
 513         mx31_init_irq();
 514         mx31ads_init_expio();
 515 }
 516
 517 static void __init mx31ads_init(void)
 518 {
 519         imx31_soc_init();
 520
 521         mxc_init_extuart();
 522         mxc_init_imx_uart();
 523         mxc_init_i2c();
 524         mxc_init_audio();
 525 }
 526
 527 static void __init mx31ads_timer_init(void)
 528 {
 529         mx31_clocks_init(26000000);
 530 }
 531
 532 static struct sys_timer mx31ads_timer = {
 533         .init   = mx31ads_timer_init,
 534 };
 535
 536 MACHINE_START(MX31ADS, "Freescale MX31ADS")
 537         /* Maintainer: Freescale Semiconductor, Inc. */
 538         .atag_offset = 0x100,
 539         .map_io = mx31ads_map_io,
 540         .init_early = imx31_init_early,
 541         .init_irq = mx31ads_init_irq,
 542         .timer = &mx31ads_timer,
 543         .init_machine = mx31ads_init,
 544 MACHINE_END