arch/arm/mach-mx3/mx31moboard.c

   1 /*
   2  *  Copyright (C) 2008 Valentin Longchamp, EPFL Mobots group
   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  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include <linux/delay.h>
  20 #include <linux/fsl_devices.h>
  21 #include <linux/gpio.h>
  22 #include <linux/init.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/leds.h>
  25 #include <linux/memory.h>
  26 #include <linux/mtd/physmap.h>
  27 #include <linux/mtd/partitions.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/types.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/time.h>
  34 #include <asm/mach/map.h>
  35 #include <mach/board-mx31moboard.h>
  36 #include <mach/common.h>
  37 #include <mach/hardware.h>
  38 #include <mach/imx-uart.h>
  39 #include <mach/iomux-mx3.h>
  40 #include <mach/i2c.h>
  41 #include <mach/mmc.h>
  42 #include <mach/mx31.h>
  43
  44 #include "devices.h"
  45
  46 static unsigned int moboard_pins[] = {
  47         /* UART0 */
  48         MX31_PIN_CTS1__CTS1, MX31_PIN_RTS1__RTS1,
  49         MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
  50         /* UART4 */
  51         MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
  52         MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
  53         /* I2C0 */
  54         MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
  55         /* I2C1 */
  56         MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
  57         /* SDHC1 */
  58         MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
  59         MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
  60         MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
  61         MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
  62         /* USB reset */
  63         MX31_PIN_GPIO1_0__GPIO1_0,
  64         /* USB OTG */
  65         MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
  66         MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
  67         MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
  68         MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
  69         MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
  70         MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
  71         MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
  72         MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
  73         MX31_PIN_USBOTG_CLK__USBOTG_CLK, MX31_PIN_USBOTG_DIR__USBOTG_DIR,
  74         MX31_PIN_USBOTG_NXT__USBOTG_NXT, MX31_PIN_USBOTG_STP__USBOTG_STP,
  75         MX31_PIN_USB_OC__GPIO1_30,
  76         /* LEDs */
  77         MX31_PIN_SVEN0__GPIO2_0, MX31_PIN_STX0__GPIO2_1,
  78         MX31_PIN_SRX0__GPIO2_2, MX31_PIN_SIMPD0__GPIO2_3,
  79         /* SEL */
  80         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  81         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  82 };
  83
  84 static struct physmap_flash_data mx31moboard_flash_data = {
  85         .width          = 2,
  86 };
  87
  88 static struct resource mx31moboard_flash_resource = {
  89         .start  = 0xa0000000,
  90         .end    = 0xa1ffffff,
  91         .flags  = IORESOURCE_MEM,
  92 };
  93
  94 static struct platform_device mx31moboard_flash = {
  95         .name   = "physmap-flash",
  96         .id     = 0,
  97         .dev    = {
  98                 .platform_data  = &mx31moboard_flash_data,
  99         },
 100         .resource = &mx31moboard_flash_resource,
 101         .num_resources = 1,
 102 };
 103
 104 static struct imxuart_platform_data uart_pdata = {
 105         .flags = IMXUART_HAVE_RTSCTS,
 106 };
 107
 108 static struct imxi2c_platform_data moboard_i2c0_pdata = {
 109         .bitrate = 400000,
 110 };
 111
 112 static struct imxi2c_platform_data moboard_i2c1_pdata = {
 113         .bitrate = 100000,
 114 };
 115
 116 #define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
 117 #define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
 118
 119 static int moboard_sdhc1_get_ro(struct device *dev)
 120 {
 121         return !gpio_get_value(SDHC1_WP);
 122 }
 123
 124 static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
 125                 void *data)
 126 {
 127         int ret;
 128
 129         ret = gpio_request(SDHC1_CD, "sdhc-detect");
 130         if (ret)
 131                 return ret;
 132
 133         gpio_direction_input(SDHC1_CD);
 134
 135         ret = gpio_request(SDHC1_WP, "sdhc-wp");
 136         if (ret)
 137                 goto err_gpio_free;
 138         gpio_direction_input(SDHC1_WP);
 139
 140         ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
 141                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 142                 "sdhc1-card-detect", data);
 143         if (ret)
 144                 goto err_gpio_free_2;
 145
 146         return 0;
 147
 148 err_gpio_free_2:
 149         gpio_free(SDHC1_WP);
 150 err_gpio_free:
 151         gpio_free(SDHC1_CD);
 152
 153         return ret;
 154 }
 155
 156 static void moboard_sdhc1_exit(struct device *dev, void *data)
 157 {
 158         free_irq(gpio_to_irq(SDHC1_CD), data);
 159         gpio_free(SDHC1_WP);
 160         gpio_free(SDHC1_CD);
 161 }
 162
 163 static struct imxmmc_platform_data sdhc1_pdata = {
 164         .get_ro = moboard_sdhc1_get_ro,
 165         .init   = moboard_sdhc1_init,
 166         .exit   = moboard_sdhc1_exit,
 167 };
 168
 169 /*
 170  * this pin is dedicated for all mx31moboard systems, so we do it here
 171  */
 172 #define USB_RESET_B     IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
 173
 174 static void usb_xcvr_reset(void)
 175 {
 176         gpio_request(USB_RESET_B, "usb-reset");
 177         gpio_direction_output(USB_RESET_B, 0);
 178         mdelay(1);
 179         gpio_set_value(USB_RESET_B, 1);
 180 }
 181
 182 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 183                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 184
 185 #define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
 186
 187 static void moboard_usbotg_init(void)
 188 {
 189         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
 190         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
 191         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
 192         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
 193         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
 194         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
 195         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
 196         mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
 197         mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
 198         mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
 199         mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
 200         mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
 201
 202         gpio_request(OTG_EN_B, "usb-udc-en");
 203         gpio_direction_output(OTG_EN_B, 0);
 204 }
 205
 206 static struct fsl_usb2_platform_data usb_pdata = {
 207         .operating_mode = FSL_USB2_DR_DEVICE,
 208         .phy_mode       = FSL_USB2_PHY_ULPI,
 209 };
 210
 211 static struct gpio_led mx31moboard_leds[] = {
 212         {
 213                 .name   = "coreboard-led-0:red:running",
 214                 .default_trigger = "heartbeat",
 215                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SVEN0),
 216         }, {
 217                 .name   = "coreboard-led-1:red",
 218                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_STX0),
 219         }, {
 220                 .name   = "coreboard-led-2:red",
 221                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SRX0),
 222         }, {
 223                 .name   = "coreboard-led-3:red",
 224                 .gpio   = IOMUX_TO_GPIO(MX31_PIN_SIMPD0),
 225         },
 226 };
 227
 228 static struct gpio_led_platform_data mx31moboard_led_pdata = {
 229         .num_leds       = ARRAY_SIZE(mx31moboard_leds),
 230         .leds           = mx31moboard_leds,
 231 };
 232
 233 static struct platform_device mx31moboard_leds_device = {
 234         .name   = "leds-gpio",
 235         .id     = -1,
 236         .dev    = {
 237                 .platform_data = &mx31moboard_led_pdata,
 238         },
 239 };
 240
 241 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 242 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 243 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 244 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 245
 246 static void mx31moboard_init_sel_gpios(void)
 247 {
 248         if (!gpio_request(SEL0, "sel0")) {
 249                 gpio_direction_input(SEL0);
 250                 gpio_export(SEL0, true);
 251         }
 252
 253         if (!gpio_request(SEL1, "sel1")) {
 254                 gpio_direction_input(SEL1);
 255                 gpio_export(SEL1, true);
 256         }
 257
 258         if (!gpio_request(SEL2, "sel2")) {
 259                 gpio_direction_input(SEL2);
 260                 gpio_export(SEL2, true);
 261         }
 262
 263         if (!gpio_request(SEL3, "sel3")) {
 264                 gpio_direction_input(SEL3);
 265                 gpio_export(SEL3, true);
 266         }
 267 }
 268
 269 static struct platform_device *devices[] __initdata = {
 270         &mx31moboard_flash,
 271         &mx31moboard_leds_device,
 272 };
 273
 274 static int mx31moboard_baseboard;
 275 core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
 276
 277 /*
 278  * Board specific initialization.
 279  */
 280 static void __init mxc_board_init(void)
 281 {
 282         mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
 283                 "moboard");
 284
 285         platform_add_devices(devices, ARRAY_SIZE(devices));
 286
 287         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 288         mxc_register_device(&mxc_uart_device4, &uart_pdata);
 289
 290         mx31moboard_init_sel_gpios();
 291
 292         mxc_register_device(&mxc_i2c_device0, &moboard_i2c0_pdata);
 293         mxc_register_device(&mxc_i2c_device1, &moboard_i2c1_pdata);
 294
 295         mxc_register_device(&mxcsdhc_device0, &sdhc1_pdata);
 296
 297         usb_xcvr_reset();
 298
 299         moboard_usbotg_init();
 300         mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
 301
 302         switch (mx31moboard_baseboard) {
 303         case MX31NOBOARD:
 304                 break;
 305         case MX31DEVBOARD:
 306                 mx31moboard_devboard_init();
 307                 break;
 308         case MX31MARXBOT:
 309                 mx31moboard_marxbot_init();
 310                 break;
 311         default:
 312                 printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
 313                         mx31moboard_baseboard);
 314         }
 315 }
 316
 317 static void __init mx31moboard_timer_init(void)
 318 {
 319         mx31_clocks_init(26000000);
 320 }
 321
 322 struct sys_timer mx31moboard_timer = {
 323         .init   = mx31moboard_timer_init,
 324 };
 325
 326 MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
 327         /* Maintainer: Valentin Longchamp, EPFL Mobots group */
 328         .phys_io        = AIPS1_BASE_ADDR,
 329         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 330         .boot_params    = PHYS_OFFSET + 0x100,
 331         .map_io         = mx31_map_io,
 332         .init_irq       = mx31_init_irq,
 333         .init_machine   = mxc_board_init,
 334         .timer          = &mx31moboard_timer,
 335 MACHINE_END
 336