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 <plat/board.h>
  42 #include <plat/common.h>
  43 #include <mach/gpio.h>
  44 #include <plat/gpmc.h>
  45 #include <mach/hardware.h>
  46 #include <plat/nand.h>
  47 #include <plat/mux.h>
  48 #include <plat/usb.h>
  49
  50 #include "sdram-micron-mt46h32m32lf-6.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_PENDOWN      114
  56 #define OVERO_GPIO_BT_NRESET    164
  57 #define OVERO_GPIO_USBH_CPEN    168
  58 #define OVERO_GPIO_USBH_NRESET  183
  59
  60 #define NAND_BLOCK_SIZE SZ_128K
  61 #define GPMC_CS0_BASE  0x60
  62 #define GPMC_CS_SIZE   0x30
  63
  64 #define OVERO_SMSC911X_CS      5
  65 #define OVERO_SMSC911X_GPIO    176
  66
  67 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  68         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  69
  70 #include <plat/mcspi.h>
  71 #include <linux/spi/spi.h>
  72 #include <linux/spi/ads7846.h>
  73
  74 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  75         .turbo_mode     = 0,
  76         .single_channel = 1,    /* 0: slave, 1: master */
  77 };
  78
  79 static int ads7846_get_pendown_state(void)
  80 {
  81         return !gpio_get_value(OVERO_GPIO_PENDOWN);
  82 }
  83
  84 static struct ads7846_platform_data ads7846_config = {
  85         .x_max                  = 0x0fff,
  86         .y_max                  = 0x0fff,
  87         .x_plate_ohms           = 180,
  88         .pressure_max           = 255,
  89         .debounce_max           = 10,
  90         .debounce_tol           = 3,
  91         .debounce_rep           = 1,
  92         .get_pendown_state      = ads7846_get_pendown_state,
  93         .keep_vref_on           = 1,
  94 };
  95
  96 static struct spi_board_info overo_spi_board_info[] __initdata = {
  97         {
  98                 .modalias               = "ads7846",
  99                 .bus_num                = 1,
 100                 .chip_select            = 0,
 101                 .max_speed_hz           = 1500000,
 102                 .controller_data        = &ads7846_mcspi_config,
 103                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 104                 .platform_data          = &ads7846_config,
 105         }
 106 };
 107
 108 static void __init overo_ads7846_init(void)
 109 {
 110         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 111             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 112                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 113         } else {
 114                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 115                 return;
 116         }
 117
 118         spi_register_board_info(overo_spi_board_info,
 119                         ARRAY_SIZE(overo_spi_board_info));
 120 }
 121
 122 #else
 123 static inline void __init overo_ads7846_init(void) { return; }
 124 #endif
 125
 126 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 127
 128 #include <linux/smsc911x.h>
 129
 130 static struct resource overo_smsc911x_resources[] = {
 131         {
 132                 .name   = "smsc911x-memory",
 133                 .flags  = IORESOURCE_MEM,
 134         },
 135         {
 136                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 137         },
 138 };
 139
 140 static struct smsc911x_platform_config overo_smsc911x_config = {
 141         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 142         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 143         .flags          = SMSC911X_USE_32BIT ,
 144         .phy_interface  = PHY_INTERFACE_MODE_MII,
 145 };
 146
 147 static struct platform_device overo_smsc911x_device = {
 148         .name           = "smsc911x",
 149         .id             = -1,
 150         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 151         .resource       = overo_smsc911x_resources,
 152         .dev            = {
 153                 .platform_data = &overo_smsc911x_config,
 154         },
 155 };
 156
 157 static inline void __init overo_init_smsc911x(void)
 158 {
 159         unsigned long cs_mem_base;
 160
 161         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 162                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 163                 return;
 164         }
 165
 166         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 167         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 168
 169         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 170             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 171                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 172         } else {
 173                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 174                 return;
 175         }
 176
 177         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 178         overo_smsc911x_resources[1].end   = 0;
 179
 180         platform_device_register(&overo_smsc911x_device);
 181 }
 182
 183 #else
 184 static inline void __init overo_init_smsc911x(void) { return; }
 185 #endif
 186
 187 static struct mtd_partition overo_nand_partitions[] = {
 188         {
 189                 .name           = "xloader",
 190                 .offset         = 0,                    /* Offset = 0x00000 */
 191                 .size           = 4 * NAND_BLOCK_SIZE,
 192                 .mask_flags     = MTD_WRITEABLE
 193         },
 194         {
 195                 .name           = "uboot",
 196                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 197                 .size           = 14 * NAND_BLOCK_SIZE,
 198         },
 199         {
 200                 .name           = "uboot environment",
 201                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 202                 .size           = 2 * NAND_BLOCK_SIZE,
 203         },
 204         {
 205                 .name           = "linux",
 206                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 207                 .size           = 32 * NAND_BLOCK_SIZE,
 208         },
 209         {
 210                 .name           = "rootfs",
 211                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 212                 .size           = MTDPART_SIZ_FULL,
 213         },
 214 };
 215
 216 static struct omap_nand_platform_data overo_nand_data = {
 217         .parts = overo_nand_partitions,
 218         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 219         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 220 };
 221
 222 static struct resource overo_nand_resource = {
 223         .flags          = IORESOURCE_MEM,
 224 };
 225
 226 static struct platform_device overo_nand_device = {
 227         .name           = "omap2-nand",
 228         .id             = -1,
 229         .dev            = {
 230                 .platform_data  = &overo_nand_data,
 231         },
 232         .num_resources  = 1,
 233         .resource       = &overo_nand_resource,
 234 };
 235
 236
 237 static void __init overo_flash_init(void)
 238 {
 239         u8 cs = 0;
 240         u8 nandcs = GPMC_CS_NUM + 1;
 241
 242         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 243
 244         /* find out the chip-select on which NAND exists */
 245         while (cs < GPMC_CS_NUM) {
 246                 u32 ret = 0;
 247                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 248
 249                 if ((ret & 0xC00) == 0x800) {
 250                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 251                         if (nandcs > GPMC_CS_NUM)
 252                                 nandcs = cs;
 253                 }
 254                 cs++;
 255         }
 256
 257         if (nandcs > GPMC_CS_NUM) {
 258                 printk(KERN_INFO "NAND: Unable to find configuration "
 259                                  "in GPMC\n ");
 260                 return;
 261         }
 262
 263         if (nandcs < GPMC_CS_NUM) {
 264                 overo_nand_data.cs = nandcs;
 265                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 266                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 267                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 268
 269                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 270                 if (platform_device_register(&overo_nand_device) < 0)
 271                         printk(KERN_ERR "Unable to register NAND device\n");
 272         }
 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         .vmmc1          = &overo_vmmc1,
 340 };
 341
 342 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 343         {
 344                 I2C_BOARD_INFO("tps65950", 0x48),
 345                 .flags = I2C_CLIENT_WAKE,
 346                 .irq = INT_34XX_SYS_NIRQ,
 347                 .platform_data = &overo_twldata,
 348         },
 349 };
 350
 351 static int __init overo_i2c_init(void)
 352 {
 353         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 354                         ARRAY_SIZE(overo_i2c_boardinfo));
 355         /* i2c2 pins are used for gpio */
 356         omap_register_i2c_bus(3, 400, NULL, 0);
 357         return 0;
 358 }
 359
 360 static struct platform_device overo_lcd_device = {
 361         .name           = "overo_lcd",
 362         .id             = -1,
 363 };
 364
 365 static struct omap_lcd_config overo_lcd_config __initdata = {
 366         .ctrl_name      = "internal",
 367 };
 368
 369 static struct omap_board_config_kernel overo_config[] __initdata = {
 370         { OMAP_TAG_LCD,         &overo_lcd_config },
 371 };
 372
 373 static void __init overo_init_irq(void)
 374 {
 375         omap_board_config = overo_config;
 376         omap_board_config_size = ARRAY_SIZE(overo_config);
 377         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 378                              mt46h32m32lf6_sdrc_params, NULL, NULL, NULL);
 379         omap_init_irq();
 380         omap_gpio_init();
 381 }
 382
 383 static struct platform_device *overo_devices[] __initdata = {
 384         &overo_lcd_device,
 385 };
 386
 387 static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 388         .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 389         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 390         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 391
 392         .phy_reset  = true,
 393         .reset_gpio_port[0]  = -EINVAL,
 394         .reset_gpio_port[1]  = OVERO_GPIO_USBH_NRESET,
 395         .reset_gpio_port[2]  = -EINVAL
 396 };
 397
 398
 399 static void __init overo_init(void)
 400 {
 401         overo_i2c_init();
 402         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 403         omap_serial_init();
 404         overo_flash_init();
 405         usb_musb_init();
 406         usb_ehci_init(&ehci_pdata);
 407         overo_ads7846_init();
 408         overo_init_smsc911x();
 409
 410         /* Ensure SDRC pins are mux'd for self-refresh */
 411         omap_cfg_reg(H16_34XX_SDRC_CKE0);
 412         omap_cfg_reg(H17_34XX_SDRC_CKE1);
 413
 414         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 415                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 416             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 417                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 418                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 419                 udelay(10);
 420                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 421         } else {
 422                 printk(KERN_ERR "could not obtain gpio for "
 423                                         "OVERO_GPIO_W2W_NRESET\n");
 424         }
 425
 426         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 427             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 428                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 429         else
 430                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 431
 432         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 433             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 434                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 435                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 436                 mdelay(6);
 437                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 438         } else {
 439                 printk(KERN_ERR "could not obtain gpio for "
 440                                         "OVERO_GPIO_BT_NRESET\n");
 441         }
 442
 443         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 444             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 445                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 446         else
 447                 printk(KERN_ERR "could not obtain gpio for "
 448                                         "OVERO_GPIO_USBH_CPEN\n");
 449 }
 450
 451 static void __init overo_map_io(void)
 452 {
 453         omap2_set_globals_343x();
 454         omap2_map_common_io();
 455 }
 456
 457 MACHINE_START(OVERO, "Gumstix Overo")
 458         .phys_io        = 0x48000000,
 459         .io_pg_offst    = ((0xfa000000) >> 18) & 0xfffc,
 460         .boot_params    = 0x80000100,
 461         .map_io         = overo_map_io,
 462         .init_irq       = overo_init_irq,
 463         .init_machine   = overo_init,
 464         .timer          = &omap_timer,
 465 MACHINE_END