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/twl.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/usb.h>
  48
  49 #include "mux.h"
  50 #include "sdram-micron-mt46h32m32lf-6.h"
  51 #include "hsmmc.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
  62 #define OVERO_SMSC911X_CS      5
  63 #define OVERO_SMSC911X_GPIO    176
  64 #define OVERO_SMSC911X2_CS     4
  65 #define OVERO_SMSC911X2_GPIO   65
  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 resource overo_smsc911x2_resources[] = {
 141         {
 142                 .name   = "smsc911x2-memory",
 143                 .flags  = IORESOURCE_MEM,
 144         },
 145         {
 146                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 147         },
 148 };
 149
 150 static struct smsc911x_platform_config overo_smsc911x_config = {
 151         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 152         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 153         .flags          = SMSC911X_USE_32BIT ,
 154         .phy_interface  = PHY_INTERFACE_MODE_MII,
 155 };
 156
 157 static struct platform_device overo_smsc911x_device = {
 158         .name           = "smsc911x",
 159         .id             = 0,
 160         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 161         .resource       = overo_smsc911x_resources,
 162         .dev            = {
 163                 .platform_data = &overo_smsc911x_config,
 164         },
 165 };
 166
 167 static struct platform_device overo_smsc911x2_device = {
 168         .name           = "smsc911x",
 169         .id             = 1,
 170         .num_resources  = ARRAY_SIZE(overo_smsc911x2_resources),
 171         .resource       = overo_smsc911x2_resources,
 172         .dev            = {
 173                 .platform_data = &overo_smsc911x_config,
 174         },
 175 };
 176
 177 static struct platform_device *smsc911x_devices[] = {
 178         &overo_smsc911x_device,
 179         &overo_smsc911x2_device,
 180 };
 181
 182 static inline void __init overo_init_smsc911x(void)
 183 {
 184         unsigned long cs_mem_base, cs_mem_base2;
 185
 186         /* set up first smsc911x chip */
 187
 188         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 189                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 190                 return;
 191         }
 192
 193         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 194         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 195
 196         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 197             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 198                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 199         } else {
 200                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 201                 return;
 202         }
 203
 204         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 205         overo_smsc911x_resources[1].end   = 0;
 206
 207         /* set up second smsc911x chip */
 208
 209         if (gpmc_cs_request(OVERO_SMSC911X2_CS, SZ_16M, &cs_mem_base2) < 0) {
 210                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x2\n");
 211                 return;
 212         }
 213
 214         overo_smsc911x2_resources[0].start = cs_mem_base2 + 0x0;
 215         overo_smsc911x2_resources[0].end   = cs_mem_base2 + 0xff;
 216
 217         if ((gpio_request(OVERO_SMSC911X2_GPIO, "SMSC911X2 IRQ") == 0) &&
 218             (gpio_direction_input(OVERO_SMSC911X2_GPIO) == 0)) {
 219                 gpio_export(OVERO_SMSC911X2_GPIO, 0);
 220         } else {
 221                 printk(KERN_ERR "could not obtain gpio for SMSC911X2 IRQ\n");
 222                 return;
 223         }
 224
 225         overo_smsc911x2_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X2_GPIO);
 226         overo_smsc911x2_resources[1].end   = 0;
 227
 228         platform_add_devices(smsc911x_devices, ARRAY_SIZE(smsc911x_devices));
 229 }
 230
 231 #else
 232 static inline void __init overo_init_smsc911x(void) { return; }
 233 #endif
 234
 235 static struct mtd_partition overo_nand_partitions[] = {
 236         {
 237                 .name           = "xloader",
 238                 .offset         = 0,                    /* Offset = 0x00000 */
 239                 .size           = 4 * NAND_BLOCK_SIZE,
 240                 .mask_flags     = MTD_WRITEABLE
 241         },
 242         {
 243                 .name           = "uboot",
 244                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 245                 .size           = 14 * NAND_BLOCK_SIZE,
 246         },
 247         {
 248                 .name           = "uboot environment",
 249                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 250                 .size           = 2 * NAND_BLOCK_SIZE,
 251         },
 252         {
 253                 .name           = "linux",
 254                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 255                 .size           = 32 * NAND_BLOCK_SIZE,
 256         },
 257         {
 258                 .name           = "rootfs",
 259                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 260                 .size           = MTDPART_SIZ_FULL,
 261         },
 262 };
 263
 264 static struct omap_nand_platform_data overo_nand_data = {
 265         .parts = overo_nand_partitions,
 266         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 267         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 268 };
 269
 270 static void __init overo_flash_init(void)
 271 {
 272         u8 cs = 0;
 273         u8 nandcs = GPMC_CS_NUM + 1;
 274
 275         /* find out the chip-select on which NAND exists */
 276         while (cs < GPMC_CS_NUM) {
 277                 u32 ret = 0;
 278                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 279
 280                 if ((ret & 0xC00) == 0x800) {
 281                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 282                         if (nandcs > GPMC_CS_NUM)
 283                                 nandcs = cs;
 284                 }
 285                 cs++;
 286         }
 287
 288         if (nandcs > GPMC_CS_NUM) {
 289                 printk(KERN_INFO "NAND: Unable to find configuration "
 290                                  "in GPMC\n ");
 291                 return;
 292         }
 293
 294         if (nandcs < GPMC_CS_NUM) {
 295                 overo_nand_data.cs = nandcs;
 296
 297                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 298                 if (gpmc_nand_init(&overo_nand_data) < 0)
 299                         printk(KERN_ERR "Unable to register NAND device\n");
 300         }
 301 }
 302
 303 static struct omap2_hsmmc_info mmc[] = {
 304         {
 305                 .mmc            = 1,
 306                 .wires          = 4,
 307                 .gpio_cd        = -EINVAL,
 308                 .gpio_wp        = -EINVAL,
 309         },
 310         {
 311                 .mmc            = 2,
 312                 .wires          = 4,
 313                 .gpio_cd        = -EINVAL,
 314                 .gpio_wp        = -EINVAL,
 315                 .transceiver    = true,
 316                 .ocr_mask       = 0x00100000,   /* 3.3V */
 317         },
 318         {}      /* Terminator */
 319 };
 320
 321 static struct regulator_consumer_supply overo_vmmc1_supply = {
 322         .supply                 = "vmmc",
 323 };
 324
 325 static int overo_twl_gpio_setup(struct device *dev,
 326                 unsigned gpio, unsigned ngpio)
 327 {
 328         omap2_hsmmc_init(mmc);
 329
 330         overo_vmmc1_supply.dev = mmc[0].dev;
 331
 332         return 0;
 333 }
 334
 335 static struct twl4030_gpio_platform_data overo_gpio_data = {
 336         .gpio_base      = OMAP_MAX_GPIO_LINES,
 337         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 338         .irq_end        = TWL4030_GPIO_IRQ_END,
 339         .setup          = overo_twl_gpio_setup,
 340 };
 341
 342 static struct twl4030_usb_data overo_usb_data = {
 343         .usb_mode       = T2_USB_MODE_ULPI,
 344 };
 345
 346 static struct regulator_init_data overo_vmmc1 = {
 347         .constraints = {
 348                 .min_uV                 = 1850000,
 349                 .max_uV                 = 3150000,
 350                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 351                                         | REGULATOR_MODE_STANDBY,
 352                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 353                                         | REGULATOR_CHANGE_MODE
 354                                         | REGULATOR_CHANGE_STATUS,
 355         },
 356         .num_consumer_supplies  = 1,
 357         .consumer_supplies      = &overo_vmmc1_supply,
 358 };
 359
 360 static struct twl4030_codec_audio_data overo_audio_data = {
 361         .audio_mclk = 26000000,
 362 };
 363
 364 static struct twl4030_codec_data overo_codec_data = {
 365         .audio_mclk = 26000000,
 366         .audio = &overo_audio_data,
 367 };
 368
 369 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
 370
 371 static struct twl4030_platform_data overo_twldata = {
 372         .irq_base       = TWL4030_IRQ_BASE,
 373         .irq_end        = TWL4030_IRQ_END,
 374         .gpio           = &overo_gpio_data,
 375         .usb            = &overo_usb_data,
 376         .codec          = &overo_codec_data,
 377         .vmmc1          = &overo_vmmc1,
 378 };
 379
 380 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 381         {
 382                 I2C_BOARD_INFO("tps65950", 0x48),
 383                 .flags = I2C_CLIENT_WAKE,
 384                 .irq = INT_34XX_SYS_NIRQ,
 385                 .platform_data = &overo_twldata,
 386         },
 387 };
 388
 389 static int __init overo_i2c_init(void)
 390 {
 391         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 392                         ARRAY_SIZE(overo_i2c_boardinfo));
 393         /* i2c2 pins are used for gpio */
 394         omap_register_i2c_bus(3, 400, NULL, 0);
 395         return 0;
 396 }
 397
 398 static struct platform_device overo_lcd_device = {
 399         .name           = "overo_lcd",
 400         .id             = -1,
 401 };
 402
 403 static struct omap_lcd_config overo_lcd_config __initdata = {
 404         .ctrl_name      = "internal",
 405 };
 406
 407 static struct omap_board_config_kernel overo_config[] __initdata = {
 408         { OMAP_TAG_LCD,         &overo_lcd_config },
 409 };
 410
 411 static void __init overo_init_irq(void)
 412 {
 413         omap_board_config = overo_config;
 414         omap_board_config_size = ARRAY_SIZE(overo_config);
 415         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 416                              mt46h32m32lf6_sdrc_params);
 417         omap_init_irq();
 418         omap_gpio_init();
 419 }
 420
 421 static struct platform_device *overo_devices[] __initdata = {
 422         &overo_lcd_device,
 423 };
 424
 425 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 426         .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 427         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 428         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 429
 430         .phy_reset  = true,
 431         .reset_gpio_port[0]  = -EINVAL,
 432         .reset_gpio_port[1]  = OVERO_GPIO_USBH_NRESET,
 433         .reset_gpio_port[2]  = -EINVAL
 434 };
 435
 436 #ifdef CONFIG_OMAP_MUX
 437 static struct omap_board_mux board_mux[] __initdata = {
 438         { .reg_offset = OMAP_MUX_TERMINATOR },
 439 };
 440 #else
 441 #define board_mux       NULL
 442 #endif
 443
 444 static struct omap_musb_board_data musb_board_data = {
 445         .interface_type         = MUSB_INTERFACE_ULPI,
 446         .mode                   = MUSB_OTG,
 447         .power                  = 100,
 448 };
 449
 450 static void __init overo_init(void)
 451 {
 452         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 453         overo_i2c_init();
 454         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 455         omap_serial_init();
 456         overo_flash_init();
 457         usb_musb_init(&musb_board_data);
 458         usb_ehci_init(&ehci_pdata);
 459         overo_ads7846_init();
 460         overo_init_smsc911x();
 461
 462         /* Ensure SDRC pins are mux'd for self-refresh */
 463         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 464         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 465
 466         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 467                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 468             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 469                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 470                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 471                 udelay(10);
 472                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 473         } else {
 474                 printk(KERN_ERR "could not obtain gpio for "
 475                                         "OVERO_GPIO_W2W_NRESET\n");
 476         }
 477
 478         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 479             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 480                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 481         else
 482                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 483
 484         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 485             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 486                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 487                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 488                 mdelay(6);
 489                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 490         } else {
 491                 printk(KERN_ERR "could not obtain gpio for "
 492                                         "OVERO_GPIO_BT_NRESET\n");
 493         }
 494
 495         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 496             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 497                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 498         else
 499                 printk(KERN_ERR "could not obtain gpio for "
 500                                         "OVERO_GPIO_USBH_CPEN\n");
 501 }
 502
 503 MACHINE_START(OVERO, "Gumstix Overo")
 504         .phys_io        = 0x48000000,
 505         .io_pg_offst    = ((0xfa000000) >> 18) & 0xfffc,
 506         .boot_params    = 0x80000100,
 507         .map_io         = omap3_map_io,
 508         .reserve        = omap_reserve,
 509         .init_irq       = overo_init_irq,
 510         .init_machine   = overo_init,
 511         .timer          = &omap_timer,
 512 MACHINE_END