arch/arm/mach-omap2/board-overo.c

   1 /*
   2  * board-overo.c (Gumstix Overo)
   3  *
   4  * Initial code: Steve Sakoman <steve@sakoman.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/clk.h>
  23 #include <linux/delay.h>
  24 #include <linux/err.h>
  25 #include <linux/init.h>
  26 #include <linux/io.h>
  27 #include <linux/kernel.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/i2c/twl4030.h>
  30 #include <linux/regulator/machine.h>
  31
  32 #include <linux/mtd/mtd.h>
  33 #include <linux/mtd/nand.h>
  34 #include <linux/mtd/partitions.h>
  35
  36 #include <asm/mach-types.h>
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/flash.h>
  39 #include <asm/mach/map.h>
  40
  41 #include <mach/board.h>
  42 #include <mach/common.h>
  43 #include <mach/gpio.h>
  44 #include <mach/gpmc.h>
  45 #include <mach/hardware.h>
  46 #include <mach/nand.h>
  47 #include <mach/usb.h>
  48
  49 #include "sdram-micron-mt46h32m32lf-6.h"
  50 #include "twl4030-generic-scripts.h"
  51 #include "mmc-twl4030.h"
  52
  53 #define OVERO_GPIO_BT_XGATE     15
  54 #define OVERO_GPIO_W2W_NRESET   16
  55 #define OVERO_GPIO_BT_NRESET    164
  56 #define OVERO_GPIO_USBH_CPEN    168
  57 #define OVERO_GPIO_USBH_NRESET  183
  58
  59 #define NAND_BLOCK_SIZE SZ_128K
  60 #define GPMC_CS0_BASE  0x60
  61 #define GPMC_CS_SIZE   0x30
  62
  63 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
  64
  65 #include <linux/smsc911x.h>
  66
  67 static struct resource overo_smsc911x_resources[] = {
  68         {
  69                 .name   = "smsc911x-memory",
  70                 .flags  = IORESOURCE_MEM,
  71         },
  72         {
  73                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  74         },
  75 };
  76
  77 static struct smsc911x_platform_config overo_smsc911x_config = {
  78         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  79         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  80         .flags          = SMSC911X_USE_32BIT ,
  81         .phy_interface  = PHY_INTERFACE_MODE_MII,
  82 };
  83
  84 static struct platform_device overo_smsc911x_device = {
  85         .name           = "smsc911x",
  86         .id             = -1,
  87         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
  88         .resource       = &overo_smsc911x_resources,
  89         .dev            = {
  90                 .platform_data = &overo_smsc911x_config,
  91         },
  92 };
  93
  94 static inline void __init overo_init_smsc911x(void)
  95 {
  96         unsigned long cs_mem_base;
  97
  98         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
  99                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 100                 return;
 101         }
 102
 103         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 104         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 105
 106         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 107             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 108                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 109         } else {
 110                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 111                 return;
 112         }
 113
 114         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 115         overo_smsc911x_resources[1].end   = 0;
 116
 117         platform_device_register(&overo_smsc911x_device);
 118 }
 119
 120 #else
 121 static inline void __init overo_init_smsc911x(void) { return; }
 122 #endif
 123
 124 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
 125         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 126
 127 #include <mach/mcspi.h>
 128 #include <linux/spi/spi.h>
 129 #include <linux/spi/ads7846.h>
 130
 131 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 132         .turbo_mode     = 0,
 133         .single_channel = 1,    /* 0: slave, 1: master */
 134 };
 135
 136
 137 static int ads7846_get_pendown_state(void)
 138 {
 139         return !gpio_get_value(OVERO_GPIO_PENDOWN);
 140 }
 141
 142 static struct ads7846_platform_data ads7846_config = {
 143         .x_max                  = 0x0fff,
 144         .y_max                  = 0x0fff,
 145         .x_plate_ohms           = 180,
 146         .pressure_max           = 255,
 147         .debounce_max           = 10,
 148         .debounce_tol           = 3,
 149         .debounce_rep           = 1,
 150         .get_pendown_state      = ads7846_get_pendown_state,
 151         .keep_vref_on           = 1,
 152 };
 153
 154 static struct spi_board_info overo_spi_board_info[] __initdata = {
 155         {
 156                 .modalias               = "ads7846",
 157                 .bus_num                = 1,
 158                 .chip_select            = 0,
 159                 .max_speed_hz           = 1500000,
 160                 .controller_data        = &ads7846_mcspi_config,
 161                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 162                 .platform_data          = &ads7846_config,
 163         }
 164 };
 165
 166 static void __init overo_ads7846_init(void)
 167 {
 168         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 169             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 170                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 171         } else {
 172                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 173                 return;
 174         }
 175
 176         spi_register_board_info(overo_spi_board_info,
 177                         ARRAY_SIZE(overo_spi_board_info));
 178 }
 179
 180 #else
 181 static inline void __init overo_ads7846_init(void) { return; }
 182 #endif
 183
 184 static struct mtd_partition overo_nand_partitions[] = {
 185         {
 186                 .name           = "xloader",
 187                 .offset         = 0,                    /* Offset = 0x00000 */
 188                 .size           = 4 * NAND_BLOCK_SIZE,
 189                 .mask_flags     = MTD_WRITEABLE
 190         },
 191         {
 192                 .name           = "uboot",
 193                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 194                 .size           = 14 * NAND_BLOCK_SIZE,
 195         },
 196         {
 197                 .name           = "uboot environment",
 198                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 199                 .size           = 2 * NAND_BLOCK_SIZE,
 200         },
 201         {
 202                 .name           = "linux",
 203                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 204                 .size           = 32 * NAND_BLOCK_SIZE,
 205         },
 206         {
 207                 .name           = "rootfs",
 208                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 209                 .size           = MTDPART_SIZ_FULL,
 210         },
 211 };
 212
 213 static struct omap_nand_platform_data overo_nand_data = {
 214         .parts = overo_nand_partitions,
 215         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 216         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 217 };
 218
 219 static struct resource overo_nand_resource = {
 220         .flags          = IORESOURCE_MEM,
 221 };
 222
 223 static struct platform_device overo_nand_device = {
 224         .name           = "omap2-nand",
 225         .id             = -1,
 226         .dev            = {
 227                 .platform_data  = &overo_nand_data,
 228         },
 229         .num_resources  = 1,
 230         .resource       = &overo_nand_resource,
 231 };
 232
 233
 234 static void __init overo_flash_init(void)
 235 {
 236         u8 cs = 0;
 237         u8 nandcs = GPMC_CS_NUM + 1;
 238
 239         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 240
 241         /* find out the chip-select on which NAND exists */
 242         while (cs < GPMC_CS_NUM) {
 243                 u32 ret = 0;
 244                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 245
 246                 if ((ret & 0xC00) == 0x800) {
 247                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 248                         if (nandcs > GPMC_CS_NUM)
 249                                 nandcs = cs;
 250                 }
 251                 cs++;
 252         }
 253
 254         if (nandcs > GPMC_CS_NUM) {
 255                 printk(KERN_INFO "NAND: Unable to find configuration "
 256                                  "in GPMC\n ");
 257                 return;
 258         }
 259
 260         if (nandcs < GPMC_CS_NUM) {
 261                 overo_nand_data.cs = nandcs;
 262                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 263                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 264                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 265
 266                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 267                 if (platform_device_register(&overo_nand_device) < 0)
 268                         printk(KERN_ERR "Unable to register NAND device\n");
 269         }
 270 }
 271 static struct omap_uart_config overo_uart_config __initdata = {
 272         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 273 };
 274
 275 static struct twl4030_hsmmc_info mmc[] = {
 276         {
 277                 .mmc            = 1,
 278                 .wires          = 4,
 279                 .gpio_cd        = -EINVAL,
 280                 .gpio_wp        = -EINVAL,
 281         },
 282         {
 283                 .mmc            = 2,
 284                 .wires          = 4,
 285                 .gpio_cd        = -EINVAL,
 286                 .gpio_wp        = -EINVAL,
 287                 .transceiver    = true,
 288                 .ocr_mask       = 0x00100000,   /* 3.3V */
 289         },
 290         {}      /* Terminator */
 291 };
 292
 293 static struct regulator_consumer_supply overo_vmmc1_supply = {
 294         .supply                 = "vmmc",
 295 };
 296
 297 static int overo_twl_gpio_setup(struct device *dev,
 298                 unsigned gpio, unsigned ngpio)
 299 {
 300         twl4030_mmc_init(mmc);
 301
 302         overo_vmmc1_supply.dev = mmc[0].dev;
 303
 304         return 0;
 305 }
 306
 307 static struct twl4030_gpio_platform_data overo_gpio_data = {
 308         .gpio_base      = OMAP_MAX_GPIO_LINES,
 309         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 310         .irq_end        = TWL4030_GPIO_IRQ_END,
 311         .setup          = overo_twl_gpio_setup,
 312 };
 313
 314 static struct twl4030_usb_data overo_usb_data = {
 315         .usb_mode       = T2_USB_MODE_ULPI,
 316 };
 317
 318 static struct regulator_init_data overo_vmmc1 = {
 319         .constraints = {
 320                 .min_uV                 = 1850000,
 321                 .max_uV                 = 3150000,
 322                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 323                                         | REGULATOR_MODE_STANDBY,
 324                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 325                                         | REGULATOR_CHANGE_MODE
 326                                         | REGULATOR_CHANGE_STATUS,
 327         },
 328         .num_consumer_supplies  = 1,
 329         .consumer_supplies      = &overo_vmmc1_supply,
 330 };
 331
 332 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
 333
 334 static struct twl4030_platform_data overo_twldata = {
 335         .irq_base       = TWL4030_IRQ_BASE,
 336         .irq_end        = TWL4030_IRQ_END,
 337         .gpio           = &overo_gpio_data,
 338         .usb            = &overo_usb_data,
 339         .power          = GENERIC3430_T2SCRIPTS_DATA,
 340         .vmmc1          = &overo_vmmc1,
 341 };
 342
 343 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 344         {
 345                 I2C_BOARD_INFO("tps65950", 0x48),
 346                 .flags = I2C_CLIENT_WAKE,
 347                 .irq = INT_34XX_SYS_NIRQ,
 348                 .platform_data = &overo_twldata,
 349         },
 350 };
 351
 352 static int __init overo_i2c_init(void)
 353 {
 354         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 355                         ARRAY_SIZE(overo_i2c_boardinfo));
 356         /* i2c2 pins are used for gpio */
 357         omap_register_i2c_bus(3, 400, NULL, 0);
 358         return 0;
 359 }
 360
 361 static void __init overo_init_irq(void)
 362 {
 363         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 364         omap_init_irq();
 365         omap_gpio_init();
 366 }
 367
 368 static struct platform_device overo_lcd_device = {
 369         .name           = "overo_lcd",
 370         .id             = -1,
 371 };
 372
 373 static struct omap_lcd_config overo_lcd_config __initdata = {
 374         .ctrl_name      = "internal",
 375 };
 376
 377 static struct omap_board_config_kernel overo_config[] __initdata = {
 378         { OMAP_TAG_UART,        &overo_uart_config },
 379         { OMAP_TAG_LCD,         &overo_lcd_config },
 380 };
 381
 382 static struct platform_device *overo_devices[] __initdata = {
 383         &overo_lcd_device,
 384 };
 385
 386 static void __init overo_init(void)
 387 {
 388         overo_i2c_init();
 389         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 390         omap_board_config = overo_config;
 391         omap_board_config_size = ARRAY_SIZE(overo_config);
 392         omap_serial_init();
 393         usb_musb_init();
 394         usb_ehci_init();
 395         overo_flash_init();
 396         overo_init_smsc911x();
 397         overo_ads7846_init();
 398
 399         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 400                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 401             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 402                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 403                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 404                 udelay(10);
 405                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 406         } else {
 407                 printk(KERN_ERR "could not obtain gpio for "
 408                                         "OVERO_GPIO_W2W_NRESET\n");
 409         }
 410
 411         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 412             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 413                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 414         else
 415                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 416
 417         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 418             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 419                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 420                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 421                 mdelay(6);
 422                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 423         } else {
 424                 printk(KERN_ERR "could not obtain gpio for "
 425                                         "OVERO_GPIO_BT_NRESET\n");
 426         }
 427
 428         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 429             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 430                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 431         else
 432                 printk(KERN_ERR "could not obtain gpio for "
 433                                         "OVERO_GPIO_USBH_CPEN\n");
 434
 435         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
 436                           "OVERO_GPIO_USBH_NRESET") == 0) &&
 437             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
 438                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
 439         else
 440                 printk(KERN_ERR "could not obtain gpio for "
 441                                         "OVERO_GPIO_USBH_NRESET\n");
 442 }
 443
 444 static void __init overo_map_io(void)
 445 {
 446         omap2_set_globals_343x();
 447         omap2_map_common_io();
 448 }
 449
 450 MACHINE_START(OVERO, "Gumstix Overo")
 451         .phys_io        = 0x48000000,
 452         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 453         .boot_params    = 0x80000100,
 454         .map_io         = overo_map_io,
 455         .init_irq       = overo_init_irq,
 456         .init_machine   = overo_init,
 457         .timer          = &omap_timer,
 458 MACHINE_END