arch/arm/mach-mx3/mach-mx31_3ds.c

   1 /*
   2  *  Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/delay.h>
  16 #include <linux/types.h>
  17 #include <linux/init.h>
  18 #include <linux/clk.h>
  19 #include <linux/irq.h>
  20 #include <linux/gpio.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/mfd/mc13783.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/regulator/machine.h>
  25 #include <linux/usb/otg.h>
  26 #include <linux/usb/ulpi.h>
  27
  28 #include <mach/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/time.h>
  32 #include <asm/memory.h>
  33 #include <asm/mach/map.h>
  34 #include <mach/common.h>
  35 #include <mach/iomux-mx3.h>
  36 #include <mach/3ds_debugboard.h>
  37 #include <mach/ulpi.h>
  38
  39 #include "devices-imx31.h"
  40 #include "devices.h"
  41
  42 /* CPLD IRQ line for external uart, external ethernet etc */
  43 #define EXPIO_PARENT_INT        IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)
  44
  45 /*
  46  * This file contains the board-specific initialization routines.
  47  */
  48
  49 static int mx31_3ds_pins[] = {
  50         /* UART1 */
  51         MX31_PIN_CTS1__CTS1,
  52         MX31_PIN_RTS1__RTS1,
  53         MX31_PIN_TXD1__TXD1,
  54         MX31_PIN_RXD1__RXD1,
  55         IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
  56         /* SPI 1 */
  57         MX31_PIN_CSPI2_SCLK__SCLK,
  58         MX31_PIN_CSPI2_MOSI__MOSI,
  59         MX31_PIN_CSPI2_MISO__MISO,
  60         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  61         MX31_PIN_CSPI2_SS0__SS0,
  62         MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
  63         /* MC13783 IRQ */
  64         IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
  65         /* USB OTG reset */
  66         IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
  67         /* USB OTG */
  68         MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
  69         MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
  70         MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
  71         MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
  72         MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
  73         MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
  74         MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
  75         MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
  76         MX31_PIN_USBOTG_CLK__USBOTG_CLK,
  77         MX31_PIN_USBOTG_DIR__USBOTG_DIR,
  78         MX31_PIN_USBOTG_NXT__USBOTG_NXT,
  79         MX31_PIN_USBOTG_STP__USBOTG_STP,
  80         /*Keyboard*/
  81         MX31_PIN_KEY_ROW0_KEY_ROW0,
  82         MX31_PIN_KEY_ROW1_KEY_ROW1,
  83         MX31_PIN_KEY_ROW2_KEY_ROW2,
  84         MX31_PIN_KEY_COL0_KEY_COL0,
  85         MX31_PIN_KEY_COL1_KEY_COL1,
  86         MX31_PIN_KEY_COL2_KEY_COL2,
  87         MX31_PIN_KEY_COL3_KEY_COL3,
  88         /* USB Host 2 */
  89         IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
  90         IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
  91         IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
  92         IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
  93         IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
  94         IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
  95         IOMUX_MODE(MX31_PIN_PC_VS2, IOMUX_CONFIG_ALT1),
  96         IOMUX_MODE(MX31_PIN_PC_BVD1, IOMUX_CONFIG_ALT1),
  97         IOMUX_MODE(MX31_PIN_PC_BVD2, IOMUX_CONFIG_ALT1),
  98         IOMUX_MODE(MX31_PIN_PC_RST, IOMUX_CONFIG_ALT1),
  99         IOMUX_MODE(MX31_PIN_IOIS16, IOMUX_CONFIG_ALT1),
 100         IOMUX_MODE(MX31_PIN_PC_RW_B, IOMUX_CONFIG_ALT1),
 101         /* USB Host2 reset */
 102         IOMUX_MODE(MX31_PIN_USB_BYP, IOMUX_CONFIG_GPIO),
 103 };
 104
 105 /*
 106  * Matrix keyboard
 107  */
 108
 109 static const uint32_t mx31_3ds_keymap[] = {
 110         KEY(0, 0, KEY_UP),
 111         KEY(0, 1, KEY_DOWN),
 112         KEY(1, 0, KEY_RIGHT),
 113         KEY(1, 1, KEY_LEFT),
 114         KEY(1, 2, KEY_ENTER),
 115         KEY(2, 0, KEY_F6),
 116         KEY(2, 1, KEY_F8),
 117         KEY(2, 2, KEY_F9),
 118         KEY(2, 3, KEY_F10),
 119 };
 120
 121 static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
 122         .keymap         = mx31_3ds_keymap,
 123         .keymap_size    = ARRAY_SIZE(mx31_3ds_keymap),
 124 };
 125
 126 /* Regulators */
 127 static struct regulator_init_data pwgtx_init = {
 128         .constraints = {
 129                 .boot_on        = 1,
 130                 .always_on      = 1,
 131         },
 132 };
 133
 134 static struct regulator_init_data gpo_init = {
 135         .constraints = {
 136                 .boot_on = 1,
 137                 .always_on = 1,
 138         }
 139 };
 140
 141 static struct mc13783_regulator_init_data mx31_3ds_regulators[] = {
 142         {
 143                 .id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
 144                 .init_data = &pwgtx_init,
 145         }, {
 146                 .id = MC13783_REG_PWGT2SPI, /* Power Gate for L2 Cache. */
 147                 .init_data = &pwgtx_init,
 148         }, {
 149
 150                 .id = MC13783_REG_GPO1, /* Turn on 1.8V */
 151                 .init_data = &gpo_init,
 152         }, {
 153                 .id = MC13783_REG_GPO3, /* Turn on 3.3V */
 154                 .init_data = &gpo_init,
 155         },
 156 };
 157
 158 /* MC13783 */
 159 static struct mc13783_platform_data mc13783_pdata __initdata = {
 160         .regulators = mx31_3ds_regulators,
 161         .num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
 162         .flags  = MC13783_USE_REGULATOR | MC13783_USE_TOUCHSCREEN,
 163 };
 164
 165 /* SPI */
 166 static int spi1_internal_chipselect[] = {
 167         MXC_SPI_CS(0),
 168         MXC_SPI_CS(2),
 169 };
 170
 171 static const struct spi_imx_master spi1_pdata __initconst = {
 172         .chipselect     = spi1_internal_chipselect,
 173         .num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
 174 };
 175
 176 static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
 177         {
 178                 .modalias       = "mc13783",
 179                 .max_speed_hz   = 1000000,
 180                 .bus_num        = 1,
 181                 .chip_select    = 1, /* SS2 */
 182                 .platform_data  = &mc13783_pdata,
 183                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 184                 .mode = SPI_CS_HIGH,
 185         },
 186 };
 187
 188 /*
 189  * NAND Flash
 190  */
 191 static const struct mxc_nand_platform_data
 192 mx31_3ds_nand_board_info __initconst = {
 193         .width          = 1,
 194         .hw_ecc         = 1,
 195 #ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
 196         .flash_bbt      = 1,
 197 #endif
 198 };
 199
 200 /*
 201  * USB OTG
 202  */
 203
 204 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 205                      PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 206
 207 #define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
 208 #define USBH2_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_BYP)
 209
 210 static int mx31_3ds_usbotg_init(void)
 211 {
 212         int err;
 213
 214         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
 215         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
 216         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
 217         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
 218         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
 219         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
 220         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
 221         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
 222         mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
 223         mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
 224         mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
 225         mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
 226
 227         err = gpio_request(USBOTG_RST_B, "otgusb-reset");
 228         if (err) {
 229                 pr_err("Failed to request the USB OTG reset gpio\n");
 230                 return err;
 231         }
 232
 233         err = gpio_direction_output(USBOTG_RST_B, 0);
 234         if (err) {
 235                 pr_err("Failed to drive the USB OTG reset gpio\n");
 236                 goto usbotg_free_reset;
 237         }
 238
 239         mdelay(1);
 240         gpio_set_value(USBOTG_RST_B, 1);
 241         return 0;
 242
 243 usbotg_free_reset:
 244         gpio_free(USBOTG_RST_B);
 245         return err;
 246 }
 247
 248 static int mx31_3ds_host2_init(struct platform_device *pdev)
 249 {
 250         int err;
 251
 252         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
 253         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
 254         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
 255         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
 256         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
 257         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
 258         mxc_iomux_set_pad(MX31_PIN_PC_VS2, USB_PAD_CFG);
 259         mxc_iomux_set_pad(MX31_PIN_PC_BVD1, USB_PAD_CFG);
 260         mxc_iomux_set_pad(MX31_PIN_PC_BVD2, USB_PAD_CFG);
 261         mxc_iomux_set_pad(MX31_PIN_PC_RST, USB_PAD_CFG);
 262         mxc_iomux_set_pad(MX31_PIN_IOIS16, USB_PAD_CFG);
 263         mxc_iomux_set_pad(MX31_PIN_PC_RW_B, USB_PAD_CFG);
 264
 265         err = gpio_request(USBH2_RST_B, "usbh2-reset");
 266         if (err) {
 267                 pr_err("Failed to request the USB Host 2 reset gpio\n");
 268                 return err;
 269         }
 270
 271         err = gpio_direction_output(USBH2_RST_B, 0);
 272         if (err) {
 273                 pr_err("Failed to drive the USB Host 2 reset gpio\n");
 274                 goto usbotg_free_reset;
 275         }
 276
 277         mdelay(1);
 278         gpio_set_value(USBH2_RST_B, 1);
 279         return 0;
 280
 281 usbotg_free_reset:
 282         gpio_free(USBH2_RST_B);
 283         return err;
 284 }
 285
 286 #if defined(CONFIG_USB_ULPI)
 287 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 288         .portsc = MXC_EHCI_MODE_ULPI,
 289         .flags  = MXC_EHCI_POWER_PINS_ENABLED,
 290 };
 291
 292 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 293         .init = mx31_3ds_host2_init,
 294         .portsc = MXC_EHCI_MODE_ULPI,
 295         .flags  = MXC_EHCI_POWER_PINS_ENABLED,
 296 };
 297 #endif
 298
 299 static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
 300         .operating_mode = FSL_USB2_DR_DEVICE,
 301         .phy_mode       = FSL_USB2_PHY_ULPI,
 302 };
 303
 304 static int otg_mode_host;
 305
 306 static int __init mx31_3ds_otg_mode(char *options)
 307 {
 308         if (!strcmp(options, "host"))
 309                 otg_mode_host = 1;
 310         else if (!strcmp(options, "device"))
 311                 otg_mode_host = 0;
 312         else
 313                 pr_info("otg_mode neither \"host\" nor \"device\". "
 314                         "Defaulting to device\n");
 315         return 0;
 316 }
 317 __setup("otg_mode=", mx31_3ds_otg_mode);
 318
 319 static const struct imxuart_platform_data uart_pdata __initconst = {
 320         .flags = IMXUART_HAVE_RTSCTS,
 321 };
 322
 323 /*
 324  * Set up static virtual mappings.
 325  */
 326 static void __init mx31_3ds_map_io(void)
 327 {
 328         mx31_map_io();
 329 }
 330
 331 /*!
 332  * Board specific initialization.
 333  */
 334 static void __init mxc_board_init(void)
 335 {
 336         mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
 337                                       "mx31_3ds");
 338
 339         imx31_add_imx_uart0(&uart_pdata);
 340         imx31_add_mxc_nand(&mx31_3ds_nand_board_info);
 341
 342         imx31_add_spi_imx1(&spi1_pdata);
 343         spi_register_board_info(mx31_3ds_spi_devs,
 344                                                 ARRAY_SIZE(mx31_3ds_spi_devs));
 345
 346         imx31_add_imx_keypad(&mx31_3ds_keymap_data);
 347
 348         mx31_3ds_usbotg_init();
 349 #if defined(CONFIG_USB_ULPI)
 350         if (otg_mode_host) {
 351                 otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 352                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 353
 354                 imx31_add_mxc_ehci_otg(&otg_pdata);
 355         }
 356         usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 357                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 358         imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 359 #endif
 360         if (!otg_mode_host)
 361                 imx31_add_fsl_usb2_udc(&usbotg_pdata);
 362
 363         if (mxc_expio_init(MX31_CS5_BASE_ADDR, EXPIO_PARENT_INT))
 364                 printk(KERN_WARNING "Init of the debug board failed, all "
 365                                     "devices on the debug board are unusable.\n");
 366         imx31_add_imx2_wdt(NULL);
 367 }
 368
 369 static void __init mx31_3ds_timer_init(void)
 370 {
 371         mx31_clocks_init(26000000);
 372 }
 373
 374 static struct sys_timer mx31_3ds_timer = {
 375         .init   = mx31_3ds_timer_init,
 376 };
 377
 378 /*
 379  * The following uses standard kernel macros defined in arch.h in order to
 380  * initialize __mach_desc_MX31_3DS data structure.
 381  */
 382 MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
 383         /* Maintainer: Freescale Semiconductor, Inc. */
 384         .boot_params    = MX3x_PHYS_OFFSET + 0x100,
 385         .map_io         = mx31_3ds_map_io,
 386         .init_irq       = mx31_init_irq,
 387         .init_machine   = mxc_board_init,
 388         .timer          = &mx31_3ds_timer,
 389 MACHINE_END