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 #include <linux/mmc/host.h>
  36
  37 #include <asm/mach-types.h>
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/flash.h>
  40 #include <asm/mach/map.h>
  41
  42 #include <plat/board.h>
  43 #include <plat/common.h>
  44 #include <mach/gpio.h>
  45 #include <plat/gpmc.h>
  46 #include <mach/hardware.h>
  47 #include <plat/nand.h>
  48 #include <plat/usb.h>
  49
  50 #include "mux.h"
  51 #include "sdram-micron-mt46h32m32lf-6.h"
  52 #include "hsmmc.h"
  53
  54 #define OVERO_GPIO_BT_XGATE     15
  55 #define OVERO_GPIO_W2W_NRESET   16
  56 #define OVERO_GPIO_PENDOWN      114
  57 #define OVERO_GPIO_BT_NRESET    164
  58 #define OVERO_GPIO_USBH_CPEN    168
  59 #define OVERO_GPIO_USBH_NRESET  183
  60
  61 #define NAND_BLOCK_SIZE SZ_128K
  62
  63 #define OVERO_SMSC911X_CS      5
  64 #define OVERO_SMSC911X_GPIO    176
  65 #define OVERO_SMSC911X2_CS     4
  66 #define OVERO_SMSC911X2_GPIO   65
  67
  68 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  69         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  70
  71 #include <plat/mcspi.h>
  72 #include <linux/spi/spi.h>
  73 #include <linux/spi/ads7846.h>
  74
  75 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  76         .turbo_mode     = 0,
  77         .single_channel = 1,    /* 0: slave, 1: master */
  78 };
  79
  80 static int ads7846_get_pendown_state(void)
  81 {
  82         return !gpio_get_value(OVERO_GPIO_PENDOWN);
  83 }
  84
  85 static struct ads7846_platform_data ads7846_config = {
  86         .x_max                  = 0x0fff,
  87         .y_max                  = 0x0fff,
  88         .x_plate_ohms           = 180,
  89         .pressure_max           = 255,
  90         .debounce_max           = 10,
  91         .debounce_tol           = 3,
  92         .debounce_rep           = 1,
  93         .get_pendown_state      = ads7846_get_pendown_state,
  94         .keep_vref_on           = 1,
  95 };
  96
  97 static struct spi_board_info overo_spi_board_info[] __initdata = {
  98         {
  99                 .modalias               = "ads7846",
 100                 .bus_num                = 1,
 101                 .chip_select            = 0,
 102                 .max_speed_hz           = 1500000,
 103                 .controller_data        = &ads7846_mcspi_config,
 104                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 105                 .platform_data          = &ads7846_config,
 106         }
 107 };
 108
 109 static void __init overo_ads7846_init(void)
 110 {
 111         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 112             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 113                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 114         } else {
 115                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 116                 return;
 117         }
 118
 119         spi_register_board_info(overo_spi_board_info,
 120                         ARRAY_SIZE(overo_spi_board_info));
 121 }
 122
 123 #else
 124 static inline void __init overo_ads7846_init(void) { return; }
 125 #endif
 126
 127 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 128
 129 #include <linux/smsc911x.h>
 130
 131 static struct resource overo_smsc911x_resources[] = {
 132         {
 133                 .name   = "smsc911x-memory",
 134                 .flags  = IORESOURCE_MEM,
 135         },
 136         {
 137                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 138         },
 139 };
 140
 141 static struct resource overo_smsc911x2_resources[] = {
 142         {
 143                 .name   = "smsc911x2-memory",
 144                 .flags  = IORESOURCE_MEM,
 145         },
 146         {
 147                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 148         },
 149 };
 150
 151 static struct smsc911x_platform_config overo_smsc911x_config = {
 152         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 153         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 154         .flags          = SMSC911X_USE_32BIT ,
 155         .phy_interface  = PHY_INTERFACE_MODE_MII,
 156 };
 157
 158 static struct platform_device overo_smsc911x_device = {
 159         .name           = "smsc911x",
 160         .id             = 0,
 161         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 162         .resource       = overo_smsc911x_resources,
 163         .dev            = {
 164                 .platform_data = &overo_smsc911x_config,
 165         },
 166 };
 167
 168 static struct platform_device overo_smsc911x2_device = {
 169         .name           = "smsc911x",
 170         .id             = 1,
 171         .num_resources  = ARRAY_SIZE(overo_smsc911x2_resources),
 172         .resource       = overo_smsc911x2_resources,
 173         .dev            = {
 174                 .platform_data = &overo_smsc911x_config,
 175         },
 176 };
 177
 178 static struct platform_device *smsc911x_devices[] = {
 179         &overo_smsc911x_device,
 180         &overo_smsc911x2_device,
 181 };
 182
 183 static inline void __init overo_init_smsc911x(void)
 184 {
 185         unsigned long cs_mem_base, cs_mem_base2;
 186
 187         /* set up first smsc911x chip */
 188
 189         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 190                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 191                 return;
 192         }
 193
 194         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 195         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 196
 197         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 198             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 199                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 200         } else {
 201                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 202                 return;
 203         }
 204
 205         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 206         overo_smsc911x_resources[1].end   = 0;
 207
 208         /* set up second smsc911x chip */
 209
 210         if (gpmc_cs_request(OVERO_SMSC911X2_CS, SZ_16M, &cs_mem_base2) < 0) {
 211                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x2\n");
 212                 return;
 213         }
 214
 215         overo_smsc911x2_resources[0].start = cs_mem_base2 + 0x0;
 216         overo_smsc911x2_resources[0].end   = cs_mem_base2 + 0xff;
 217
 218         if ((gpio_request(OVERO_SMSC911X2_GPIO, "SMSC911X2 IRQ") == 0) &&
 219             (gpio_direction_input(OVERO_SMSC911X2_GPIO) == 0)) {
 220                 gpio_export(OVERO_SMSC911X2_GPIO, 0);
 221         } else {
 222                 printk(KERN_ERR "could not obtain gpio for SMSC911X2 IRQ\n");
 223                 return;
 224         }
 225
 226         overo_smsc911x2_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X2_GPIO);
 227         overo_smsc911x2_resources[1].end   = 0;
 228
 229         platform_add_devices(smsc911x_devices, ARRAY_SIZE(smsc911x_devices));
 230 }
 231
 232 #else
 233 static inline void __init overo_init_smsc911x(void) { return; }
 234 #endif
 235
 236 static struct mtd_partition overo_nand_partitions[] = {
 237         {
 238                 .name           = "xloader",
 239                 .offset         = 0,                    /* Offset = 0x00000 */
 240                 .size           = 4 * NAND_BLOCK_SIZE,
 241                 .mask_flags     = MTD_WRITEABLE
 242         },
 243         {
 244                 .name           = "uboot",
 245                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 246                 .size           = 14 * NAND_BLOCK_SIZE,
 247         },
 248         {
 249                 .name           = "uboot environment",
 250                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 251                 .size           = 2 * NAND_BLOCK_SIZE,
 252         },
 253         {
 254                 .name           = "linux",
 255                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 256                 .size           = 32 * NAND_BLOCK_SIZE,
 257         },
 258         {
 259                 .name           = "rootfs",
 260                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 261                 .size           = MTDPART_SIZ_FULL,
 262         },
 263 };
 264
 265 static struct omap_nand_platform_data overo_nand_data = {
 266         .parts = overo_nand_partitions,
 267         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 268         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 269 };
 270
 271 static void __init overo_flash_init(void)
 272 {
 273         u8 cs = 0;
 274         u8 nandcs = GPMC_CS_NUM + 1;
 275
 276         /* find out the chip-select on which NAND exists */
 277         while (cs < GPMC_CS_NUM) {
 278                 u32 ret = 0;
 279                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 280
 281                 if ((ret & 0xC00) == 0x800) {
 282                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 283                         if (nandcs > GPMC_CS_NUM)
 284                                 nandcs = cs;
 285                 }
 286                 cs++;
 287         }
 288
 289         if (nandcs > GPMC_CS_NUM) {
 290                 printk(KERN_INFO "NAND: Unable to find configuration "
 291                                  "in GPMC\n ");
 292                 return;
 293         }
 294
 295         if (nandcs < GPMC_CS_NUM) {
 296                 overo_nand_data.cs = nandcs;
 297
 298                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 299                 if (gpmc_nand_init(&overo_nand_data) < 0)
 300                         printk(KERN_ERR "Unable to register NAND device\n");
 301         }
 302 }
 303
 304 static struct omap2_hsmmc_info mmc[] = {
 305         {
 306                 .mmc            = 1,
 307                 .caps           = MMC_CAP_4_BIT_DATA,
 308                 .gpio_cd        = -EINVAL,
 309                 .gpio_wp        = -EINVAL,
 310         },
 311         {
 312                 .mmc            = 2,
 313                 .caps           = MMC_CAP_4_BIT_DATA,
 314                 .gpio_cd        = -EINVAL,
 315                 .gpio_wp        = -EINVAL,
 316                 .transceiver    = true,
 317                 .ocr_mask       = 0x00100000,   /* 3.3V */
 318         },
 319         {}      /* Terminator */
 320 };
 321
 322 static struct regulator_consumer_supply overo_vmmc1_supply = {
 323         .supply                 = "vmmc",
 324 };
 325
 326 static int overo_twl_gpio_setup(struct device *dev,
 327                 unsigned gpio, unsigned ngpio)
 328 {
 329         omap2_hsmmc_init(mmc);
 330
 331         overo_vmmc1_supply.dev = mmc[0].dev;
 332
 333         return 0;
 334 }
 335
 336 static struct twl4030_gpio_platform_data overo_gpio_data = {
 337         .gpio_base      = OMAP_MAX_GPIO_LINES,
 338         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 339         .irq_end        = TWL4030_GPIO_IRQ_END,
 340         .setup          = overo_twl_gpio_setup,
 341 };
 342
 343 static struct twl4030_usb_data overo_usb_data = {
 344         .usb_mode       = T2_USB_MODE_ULPI,
 345 };
 346
 347 static struct regulator_init_data overo_vmmc1 = {
 348         .constraints = {
 349                 .min_uV                 = 1850000,
 350                 .max_uV                 = 3150000,
 351                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 352                                         | REGULATOR_MODE_STANDBY,
 353                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 354                                         | REGULATOR_CHANGE_MODE
 355                                         | REGULATOR_CHANGE_STATUS,
 356         },
 357         .num_consumer_supplies  = 1,
 358         .consumer_supplies      = &overo_vmmc1_supply,
 359 };
 360
 361 static struct twl4030_codec_audio_data overo_audio_data = {
 362         .audio_mclk = 26000000,
 363 };
 364
 365 static struct twl4030_codec_data overo_codec_data = {
 366         .audio_mclk = 26000000,
 367         .audio = &overo_audio_data,
 368 };
 369
 370 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
 371
 372 static struct twl4030_platform_data overo_twldata = {
 373         .irq_base       = TWL4030_IRQ_BASE,
 374         .irq_end        = TWL4030_IRQ_END,
 375         .gpio           = &overo_gpio_data,
 376         .usb            = &overo_usb_data,
 377         .codec          = &overo_codec_data,
 378         .vmmc1          = &overo_vmmc1,
 379 };
 380
 381 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 382         {
 383                 I2C_BOARD_INFO("tps65950", 0x48),
 384                 .flags = I2C_CLIENT_WAKE,
 385                 .irq = INT_34XX_SYS_NIRQ,
 386                 .platform_data = &overo_twldata,
 387         },
 388 };
 389
 390 static int __init overo_i2c_init(void)
 391 {
 392         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 393                         ARRAY_SIZE(overo_i2c_boardinfo));
 394         /* i2c2 pins are used for gpio */
 395         omap_register_i2c_bus(3, 400, NULL, 0);
 396         return 0;
 397 }
 398
 399 static struct platform_device overo_lcd_device = {
 400         .name           = "overo_lcd",
 401         .id             = -1,
 402 };
 403
 404 static struct omap_lcd_config overo_lcd_config __initdata = {
 405         .ctrl_name      = "internal",
 406 };
 407
 408 static struct omap_board_config_kernel overo_config[] __initdata = {
 409         { OMAP_TAG_LCD,         &overo_lcd_config },
 410 };
 411
 412 static void __init overo_init_irq(void)
 413 {
 414         omap_board_config = overo_config;
 415         omap_board_config_size = ARRAY_SIZE(overo_config);
 416         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 417                              mt46h32m32lf6_sdrc_params);
 418         omap_init_irq();
 419         omap_gpio_init();
 420 }
 421
 422 static struct platform_device *overo_devices[] __initdata = {
 423         &overo_lcd_device,
 424 };
 425
 426 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 427         .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 428         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 429         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 430
 431         .phy_reset  = true,
 432         .reset_gpio_port[0]  = -EINVAL,
 433         .reset_gpio_port[1]  = OVERO_GPIO_USBH_NRESET,
 434         .reset_gpio_port[2]  = -EINVAL
 435 };
 436
 437 #ifdef CONFIG_OMAP_MUX
 438 static struct omap_board_mux board_mux[] __initdata = {
 439         { .reg_offset = OMAP_MUX_TERMINATOR },
 440 };
 441 #else
 442 #define board_mux       NULL
 443 #endif
 444
 445 static struct omap_musb_board_data musb_board_data = {
 446         .interface_type         = MUSB_INTERFACE_ULPI,
 447         .mode                   = MUSB_OTG,
 448         .power                  = 100,
 449 };
 450
 451 static void __init overo_init(void)
 452 {
 453         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 454         overo_i2c_init();
 455         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 456         omap_serial_init();
 457         overo_flash_init();
 458         usb_musb_init(&musb_board_data);
 459         usb_ehci_init(&ehci_pdata);
 460         overo_ads7846_init();
 461         overo_init_smsc911x();
 462
 463         /* Ensure SDRC pins are mux'd for self-refresh */
 464         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 465         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 466
 467         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 468                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 469             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 470                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 471                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 472                 udelay(10);
 473                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 474         } else {
 475                 printk(KERN_ERR "could not obtain gpio for "
 476                                         "OVERO_GPIO_W2W_NRESET\n");
 477         }
 478
 479         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 480             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 481                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 482         else
 483                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 484
 485         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 486             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 487                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 488                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 489                 mdelay(6);
 490                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 491         } else {
 492                 printk(KERN_ERR "could not obtain gpio for "
 493                                         "OVERO_GPIO_BT_NRESET\n");
 494         }
 495
 496         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 497             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 498                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 499         else
 500                 printk(KERN_ERR "could not obtain gpio for "
 501                                         "OVERO_GPIO_USBH_CPEN\n");
 502 }
 503
 504 MACHINE_START(OVERO, "Gumstix Overo")
 505         .boot_params    = 0x80000100,
 506         .map_io         = omap3_map_io,
 507         .reserve        = omap_reserve,
 508         .init_irq       = overo_init_irq,
 509         .init_machine   = overo_init,
 510         .timer          = &omap_timer,
 511 MACHINE_END