arch/arm/mach-imx/mach-mx27_3ds.c

   1 /*
   2  * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   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 /*
  18  * This machine is known as:
  19  *  - i.MX27 3-Stack Development System
  20  *  - i.MX27 Platform Development Kit (i.MX27 PDK)
  21  */
  22
  23 #include <linux/platform_device.h>
  24 #include <linux/gpio.h>
  25 #include <linux/irq.h>
  26 #include <linux/usb/otg.h>
  27 #include <linux/usb/ulpi.h>
  28 #include <linux/delay.h>
  29 #include <linux/mfd/mc13783.h>
  30 #include <linux/spi/spi.h>
  31 #include <linux/regulator/machine.h>
  32
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/time.h>
  36 #include <mach/hardware.h>
  37 #include <mach/common.h>
  38 #include <mach/iomux-mx27.h>
  39 #include <mach/ulpi.h>
  40 #include <mach/irqs.h>
  41 #include <mach/3ds_debugboard.h>
  42
  43 #include "devices-imx27.h"
  44
  45 #define SD1_EN_GPIO (GPIO_PORTB + 25)
  46 #define OTG_PHY_RESET_GPIO (GPIO_PORTB + 23)
  47 #define SPI2_SS0 (GPIO_PORTD + 21)
  48 #define EXPIO_PARENT_INT        (MXC_INTERNAL_IRQS + GPIO_PORTC + 28)
  49
  50 static const int mx27pdk_pins[] __initconst = {
  51         /* UART1 */
  52         PE12_PF_UART1_TXD,
  53         PE13_PF_UART1_RXD,
  54         PE14_PF_UART1_CTS,
  55         PE15_PF_UART1_RTS,
  56         /* FEC */
  57         PD0_AIN_FEC_TXD0,
  58         PD1_AIN_FEC_TXD1,
  59         PD2_AIN_FEC_TXD2,
  60         PD3_AIN_FEC_TXD3,
  61         PD4_AOUT_FEC_RX_ER,
  62         PD5_AOUT_FEC_RXD1,
  63         PD6_AOUT_FEC_RXD2,
  64         PD7_AOUT_FEC_RXD3,
  65         PD8_AF_FEC_MDIO,
  66         PD9_AIN_FEC_MDC,
  67         PD10_AOUT_FEC_CRS,
  68         PD11_AOUT_FEC_TX_CLK,
  69         PD12_AOUT_FEC_RXD0,
  70         PD13_AOUT_FEC_RX_DV,
  71         PD14_AOUT_FEC_RX_CLK,
  72         PD15_AOUT_FEC_COL,
  73         PD16_AIN_FEC_TX_ER,
  74         PF23_AIN_FEC_TX_EN,
  75         /* SDHC1 */
  76         PE18_PF_SD1_D0,
  77         PE19_PF_SD1_D1,
  78         PE20_PF_SD1_D2,
  79         PE21_PF_SD1_D3,
  80         PE22_PF_SD1_CMD,
  81         PE23_PF_SD1_CLK,
  82         SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
  83         /* OTG */
  84         OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
  85         PC7_PF_USBOTG_DATA5,
  86         PC8_PF_USBOTG_DATA6,
  87         PC9_PF_USBOTG_DATA0,
  88         PC10_PF_USBOTG_DATA2,
  89         PC11_PF_USBOTG_DATA1,
  90         PC12_PF_USBOTG_DATA4,
  91         PC13_PF_USBOTG_DATA3,
  92         PE0_PF_USBOTG_NXT,
  93         PE1_PF_USBOTG_STP,
  94         PE2_PF_USBOTG_DIR,
  95         PE24_PF_USBOTG_CLK,
  96         PE25_PF_USBOTG_DATA7,
  97         /* CSPI2 */
  98         PD22_PF_CSPI2_SCLK,
  99         PD23_PF_CSPI2_MISO,
 100         PD24_PF_CSPI2_MOSI,
 101 };
 102
 103 static const struct imxuart_platform_data uart_pdata __initconst = {
 104         .flags = IMXUART_HAVE_RTSCTS,
 105 };
 106
 107 /*
 108  * Matrix keyboard
 109  */
 110
 111 static const uint32_t mx27_3ds_keymap[] = {
 112         KEY(0, 0, KEY_UP),
 113         KEY(0, 1, KEY_DOWN),
 114         KEY(1, 0, KEY_RIGHT),
 115         KEY(1, 1, KEY_LEFT),
 116         KEY(1, 2, KEY_ENTER),
 117         KEY(2, 0, KEY_F6),
 118         KEY(2, 1, KEY_F8),
 119         KEY(2, 2, KEY_F9),
 120         KEY(2, 3, KEY_F10),
 121 };
 122
 123 static const struct matrix_keymap_data mx27_3ds_keymap_data __initconst = {
 124         .keymap         = mx27_3ds_keymap,
 125         .keymap_size    = ARRAY_SIZE(mx27_3ds_keymap),
 126 };
 127
 128 static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
 129                                 void *data)
 130 {
 131         return request_irq(IRQ_GPIOB(26), detect_irq, IRQF_TRIGGER_FALLING |
 132                         IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
 133 }
 134
 135 static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
 136 {
 137         free_irq(IRQ_GPIOB(26), data);
 138 }
 139
 140 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
 141         .init = mx27_3ds_sdhc1_init,
 142         .exit = mx27_3ds_sdhc1_exit,
 143 };
 144
 145 static void mx27_3ds_sdhc1_enable_level_translator(void)
 146 {
 147         /* Turn on TXB0108 OE pin */
 148         gpio_request(SD1_EN_GPIO, "sd1_enable");
 149         gpio_direction_output(SD1_EN_GPIO, 1);
 150 }
 151
 152
 153 static int otg_phy_init(void)
 154 {
 155         gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
 156         gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
 157         mdelay(1);
 158         gpio_set_value(OTG_PHY_RESET_GPIO, 1);
 159         return 0;
 160 }
 161
 162 #if defined(CONFIG_USB_ULPI)
 163
 164 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 165         .portsc = MXC_EHCI_MODE_ULPI,
 166         .flags  = MXC_EHCI_INTERFACE_DIFF_UNI,
 167 };
 168 #endif
 169
 170 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
 171         .operating_mode = FSL_USB2_DR_DEVICE,
 172         .phy_mode       = FSL_USB2_PHY_ULPI,
 173 };
 174
 175 static int otg_mode_host;
 176
 177 static int __init mx27_3ds_otg_mode(char *options)
 178 {
 179         if (!strcmp(options, "host"))
 180                 otg_mode_host = 1;
 181         else if (!strcmp(options, "device"))
 182                 otg_mode_host = 0;
 183         else
 184                 pr_info("otg_mode neither \"host\" nor \"device\". "
 185                         "Defaulting to device\n");
 186         return 0;
 187 }
 188 __setup("otg_mode=", mx27_3ds_otg_mode);
 189
 190 /* Regulators */
 191 static struct regulator_consumer_supply vmmc1_consumers[] = {
 192         REGULATOR_SUPPLY("lcd_2v8", NULL),
 193 };
 194
 195 static struct regulator_init_data vmmc1_init = {
 196         .constraints = {
 197                 .min_uV = 2800000,
 198                 .max_uV = 2800000,
 199                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 200         },
 201         .num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
 202         .consumer_supplies = vmmc1_consumers,
 203 };
 204
 205 static struct regulator_consumer_supply vgen_consumers[] = {
 206         REGULATOR_SUPPLY("vdd_lcdio", NULL),
 207 };
 208
 209 static struct regulator_init_data vgen_init = {
 210         .constraints = {
 211                 .min_uV = 1800000,
 212                 .max_uV = 1800000,
 213                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 214         },
 215         .num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
 216         .consumer_supplies = vgen_consumers,
 217 };
 218
 219 static struct mc13783_regulator_init_data mx27_3ds_regulators[] = {
 220         {
 221                 .id = MC13783_REG_VMMC1,
 222                 .init_data = &vmmc1_init,
 223         }, {
 224                 .id = MC13783_REG_VGEN,
 225                 .init_data = &vgen_init,
 226         },
 227 };
 228
 229 /* MC13783 */
 230 static struct mc13783_platform_data mc13783_pdata __initdata = {
 231         .regulators = mx27_3ds_regulators,
 232         .num_regulators = ARRAY_SIZE(mx27_3ds_regulators),
 233         .flags  = MC13783_USE_REGULATOR,
 234 };
 235
 236 /* SPI */
 237 static int spi2_internal_chipselect[] = {SPI2_SS0};
 238
 239 static const struct spi_imx_master spi2_pdata __initconst = {
 240         .chipselect     = spi2_internal_chipselect,
 241         .num_chipselect = ARRAY_SIZE(spi2_internal_chipselect),
 242 };
 243
 244 static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
 245         {
 246                 .modalias       = "mc13783",
 247                 .max_speed_hz   = 1000000,
 248                 .bus_num        = 1,
 249                 .chip_select    = 0, /* SS0 */
 250                 .platform_data  = &mc13783_pdata,
 251                 .irq = IRQ_GPIOC(14),
 252                 .mode = SPI_CS_HIGH,
 253         },
 254 };
 255
 256
 257 static void __init mx27pdk_init(void)
 258 {
 259         mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
 260                 "mx27pdk");
 261         mx27_3ds_sdhc1_enable_level_translator();
 262         imx27_add_imx_uart0(&uart_pdata);
 263         imx27_add_fec(NULL);
 264         imx27_add_imx_keypad(&mx27_3ds_keymap_data);
 265         imx27_add_mxc_mmc(0, &sdhc1_pdata);
 266         imx27_add_imx2_wdt(NULL);
 267         otg_phy_init();
 268 #if defined(CONFIG_USB_ULPI)
 269         if (otg_mode_host) {
 270                 otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
 271                                 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
 272
 273                 imx27_add_mxc_ehci_otg(&otg_pdata);
 274         }
 275 #endif
 276         if (!otg_mode_host)
 277                 imx27_add_fsl_usb2_udc(&otg_device_pdata);
 278
 279         imx27_add_spi_imx1(&spi2_pdata);
 280         spi_register_board_info(mx27_3ds_spi_devs,
 281                                                 ARRAY_SIZE(mx27_3ds_spi_devs));
 282
 283         if (mxc_expio_init(MX27_CS5_BASE_ADDR, EXPIO_PARENT_INT))
 284                 pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
 285 }
 286
 287 static void __init mx27pdk_timer_init(void)
 288 {
 289         mx27_clocks_init(26000000);
 290 }
 291
 292 static struct sys_timer mx27pdk_timer = {
 293         .init   = mx27pdk_timer_init,
 294 };
 295
 296 MACHINE_START(MX27_3DS, "Freescale MX27PDK")
 297         /* maintainer: Freescale Semiconductor, Inc. */
 298         .boot_params    = MX27_PHYS_OFFSET + 0x100,
 299         .map_io         = mx27_map_io,
 300         .init_irq       = mx27_init_irq,
 301         .init_machine   = mx27pdk_init,
 302         .timer          = &mx27pdk_timer,
 303 MACHINE_END