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 #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 #define OVERO_SMSC911X2_CS     4
  67 #define OVERO_SMSC911X2_GPIO   65
  68
  69 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  70         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  71
  72 #include <plat/mcspi.h>
  73 #include <linux/spi/spi.h>
  74 #include <linux/spi/ads7846.h>
  75
  76 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  77         .turbo_mode     = 0,
  78         .single_channel = 1,    /* 0: slave, 1: master */
  79 };
  80
  81 static int ads7846_get_pendown_state(void)
  82 {
  83         return !gpio_get_value(OVERO_GPIO_PENDOWN);
  84 }
  85
  86 static struct ads7846_platform_data ads7846_config = {
  87         .x_max                  = 0x0fff,
  88         .y_max                  = 0x0fff,
  89         .x_plate_ohms           = 180,
  90         .pressure_max           = 255,
  91         .debounce_max           = 10,
  92         .debounce_tol           = 3,
  93         .debounce_rep           = 1,
  94         .get_pendown_state      = ads7846_get_pendown_state,
  95         .keep_vref_on           = 1,
  96 };
  97
  98 static struct spi_board_info overo_spi_board_info[] __initdata = {
  99         {
 100                 .modalias               = "ads7846",
 101                 .bus_num                = 1,
 102                 .chip_select            = 0,
 103                 .max_speed_hz           = 1500000,
 104                 .controller_data        = &ads7846_mcspi_config,
 105                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 106                 .platform_data          = &ads7846_config,
 107         }
 108 };
 109
 110 static void __init overo_ads7846_init(void)
 111 {
 112         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 113             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 114                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 115         } else {
 116                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 117                 return;
 118         }
 119
 120         spi_register_board_info(overo_spi_board_info,
 121                         ARRAY_SIZE(overo_spi_board_info));
 122 }
 123
 124 #else
 125 static inline void __init overo_ads7846_init(void) { return; }
 126 #endif
 127
 128 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 129
 130 #include <linux/smsc911x.h>
 131
 132 static struct resource overo_smsc911x_resources[] = {
 133         {
 134                 .name   = "smsc911x-memory",
 135                 .flags  = IORESOURCE_MEM,
 136         },
 137         {
 138                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 139         },
 140 };
 141
 142 static struct resource overo_smsc911x2_resources[] = {
 143         {
 144                 .name   = "smsc911x2-memory",
 145                 .flags  = IORESOURCE_MEM,
 146         },
 147         {
 148                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 149         },
 150 };
 151
 152 static struct smsc911x_platform_config overo_smsc911x_config = {
 153         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 154         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 155         .flags          = SMSC911X_USE_32BIT ,
 156         .phy_interface  = PHY_INTERFACE_MODE_MII,
 157 };
 158
 159 static struct platform_device overo_smsc911x_device = {
 160         .name           = "smsc911x",
 161         .id             = 0,
 162         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 163         .resource       = overo_smsc911x_resources,
 164         .dev            = {
 165                 .platform_data = &overo_smsc911x_config,
 166         },
 167 };
 168
 169 static inline void __init overo_init_smsc911x(void)
 170 {
 171         unsigned long cs_mem_base;
 172
 173         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 174                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 175                 return;
 176         }
 177
 178         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 179         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 180
 181         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 182             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 183                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 184         } else {
 185                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 186                 return;
 187         }
 188
 189         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 190         overo_smsc911x_resources[1].end   = 0;
 191
 192         platform_device_register(&overo_smsc911x_device);
 193 }
 194
 195 #else
 196 static inline void __init overo_init_smsc911x(void) { return; }
 197 #endif
 198
 199 static struct mtd_partition overo_nand_partitions[] = {
 200         {
 201                 .name           = "xloader",
 202                 .offset         = 0,                    /* Offset = 0x00000 */
 203                 .size           = 4 * NAND_BLOCK_SIZE,
 204                 .mask_flags     = MTD_WRITEABLE
 205         },
 206         {
 207                 .name           = "uboot",
 208                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 209                 .size           = 14 * NAND_BLOCK_SIZE,
 210         },
 211         {
 212                 .name           = "uboot environment",
 213                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 214                 .size           = 2 * NAND_BLOCK_SIZE,
 215         },
 216         {
 217                 .name           = "linux",
 218                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 219                 .size           = 32 * NAND_BLOCK_SIZE,
 220         },
 221         {
 222                 .name           = "rootfs",
 223                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 224                 .size           = MTDPART_SIZ_FULL,
 225         },
 226 };
 227
 228 static struct omap_nand_platform_data overo_nand_data = {
 229         .parts = overo_nand_partitions,
 230         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 231         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 232 };
 233
 234 static struct resource overo_nand_resource = {
 235         .flags          = IORESOURCE_MEM,
 236 };
 237
 238 static struct platform_device overo_nand_device = {
 239         .name           = "omap2-nand",
 240         .id             = -1,
 241         .dev            = {
 242                 .platform_data  = &overo_nand_data,
 243         },
 244         .num_resources  = 1,
 245         .resource       = &overo_nand_resource,
 246 };
 247
 248
 249 static void __init overo_flash_init(void)
 250 {
 251         u8 cs = 0;
 252         u8 nandcs = GPMC_CS_NUM + 1;
 253
 254         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 255
 256         /* find out the chip-select on which NAND exists */
 257         while (cs < GPMC_CS_NUM) {
 258                 u32 ret = 0;
 259                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 260
 261                 if ((ret & 0xC00) == 0x800) {
 262                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 263                         if (nandcs > GPMC_CS_NUM)
 264                                 nandcs = cs;
 265                 }
 266                 cs++;
 267         }
 268
 269         if (nandcs > GPMC_CS_NUM) {
 270                 printk(KERN_INFO "NAND: Unable to find configuration "
 271                                  "in GPMC\n ");
 272                 return;
 273         }
 274
 275         if (nandcs < GPMC_CS_NUM) {
 276                 overo_nand_data.cs = nandcs;
 277                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 278                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 279                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 280
 281                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 282                 if (platform_device_register(&overo_nand_device) < 0)
 283                         printk(KERN_ERR "Unable to register NAND device\n");
 284         }
 285 }
 286
 287 static struct omap2_hsmmc_info mmc[] = {
 288         {
 289                 .mmc            = 1,
 290                 .wires          = 4,
 291                 .gpio_cd        = -EINVAL,
 292                 .gpio_wp        = -EINVAL,
 293         },
 294         {
 295                 .mmc            = 2,
 296                 .wires          = 4,
 297                 .gpio_cd        = -EINVAL,
 298                 .gpio_wp        = -EINVAL,
 299                 .transceiver    = true,
 300                 .ocr_mask       = 0x00100000,   /* 3.3V */
 301         },
 302         {}      /* Terminator */
 303 };
 304
 305 static struct regulator_consumer_supply overo_vmmc1_supply = {
 306         .supply                 = "vmmc",
 307 };
 308
 309 static int overo_twl_gpio_setup(struct device *dev,
 310                 unsigned gpio, unsigned ngpio)
 311 {
 312         omap2_hsmmc_init(mmc);
 313
 314         overo_vmmc1_supply.dev = mmc[0].dev;
 315
 316         return 0;
 317 }
 318
 319 static struct twl4030_gpio_platform_data overo_gpio_data = {
 320         .gpio_base      = OMAP_MAX_GPIO_LINES,
 321         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 322         .irq_end        = TWL4030_GPIO_IRQ_END,
 323         .setup          = overo_twl_gpio_setup,
 324 };
 325
 326 static struct twl4030_usb_data overo_usb_data = {
 327         .usb_mode       = T2_USB_MODE_ULPI,
 328 };
 329
 330 static struct regulator_init_data overo_vmmc1 = {
 331         .constraints = {
 332                 .min_uV                 = 1850000,
 333                 .max_uV                 = 3150000,
 334                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 335                                         | REGULATOR_MODE_STANDBY,
 336                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 337                                         | REGULATOR_CHANGE_MODE
 338                                         | REGULATOR_CHANGE_STATUS,
 339         },
 340         .num_consumer_supplies  = 1,
 341         .consumer_supplies      = &overo_vmmc1_supply,
 342 };
 343
 344 static struct twl4030_codec_audio_data overo_audio_data = {
 345         .audio_mclk = 26000000,
 346 };
 347
 348 static struct twl4030_codec_data overo_codec_data = {
 349         .audio_mclk = 26000000,
 350         .audio = &overo_audio_data,
 351 };
 352
 353 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
 354
 355 static struct twl4030_platform_data overo_twldata = {
 356         .irq_base       = TWL4030_IRQ_BASE,
 357         .irq_end        = TWL4030_IRQ_END,
 358         .gpio           = &overo_gpio_data,
 359         .usb            = &overo_usb_data,
 360         .codec          = &overo_codec_data,
 361         .vmmc1          = &overo_vmmc1,
 362 };
 363
 364 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 365         {
 366                 I2C_BOARD_INFO("tps65950", 0x48),
 367                 .flags = I2C_CLIENT_WAKE,
 368                 .irq = INT_34XX_SYS_NIRQ,
 369                 .platform_data = &overo_twldata,
 370         },
 371 };
 372
 373 static int __init overo_i2c_init(void)
 374 {
 375         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 376                         ARRAY_SIZE(overo_i2c_boardinfo));
 377         /* i2c2 pins are used for gpio */
 378         omap_register_i2c_bus(3, 400, NULL, 0);
 379         return 0;
 380 }
 381
 382 static struct platform_device overo_lcd_device = {
 383         .name           = "overo_lcd",
 384         .id             = -1,
 385 };
 386
 387 static struct omap_lcd_config overo_lcd_config __initdata = {
 388         .ctrl_name      = "internal",
 389 };
 390
 391 static struct omap_board_config_kernel overo_config[] __initdata = {
 392         { OMAP_TAG_LCD,         &overo_lcd_config },
 393 };
 394
 395 static void __init overo_init_irq(void)
 396 {
 397         omap_board_config = overo_config;
 398         omap_board_config_size = ARRAY_SIZE(overo_config);
 399         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 400                              mt46h32m32lf6_sdrc_params);
 401         omap_init_irq();
 402         omap_gpio_init();
 403 }
 404
 405 static struct platform_device *overo_devices[] __initdata = {
 406         &overo_lcd_device,
 407 };
 408
 409 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 410         .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 411         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 412         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 413
 414         .phy_reset  = true,
 415         .reset_gpio_port[0]  = -EINVAL,
 416         .reset_gpio_port[1]  = OVERO_GPIO_USBH_NRESET,
 417         .reset_gpio_port[2]  = -EINVAL
 418 };
 419
 420 #ifdef CONFIG_OMAP_MUX
 421 static struct omap_board_mux board_mux[] __initdata = {
 422         { .reg_offset = OMAP_MUX_TERMINATOR },
 423 };
 424 #else
 425 #define board_mux       NULL
 426 #endif
 427
 428 static struct omap_musb_board_data musb_board_data = {
 429         .interface_type         = MUSB_INTERFACE_ULPI,
 430         .mode                   = MUSB_OTG,
 431         .power                  = 100,
 432 };
 433
 434 static void __init overo_init(void)
 435 {
 436         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 437         overo_i2c_init();
 438         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 439         omap_serial_init();
 440         overo_flash_init();
 441         usb_musb_init(&musb_board_data);
 442         usb_ehci_init(&ehci_pdata);
 443         overo_ads7846_init();
 444         overo_init_smsc911x();
 445
 446         /* Ensure SDRC pins are mux'd for self-refresh */
 447         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 448         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 449
 450         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 451                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 452             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 453                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 454                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 455                 udelay(10);
 456                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 457         } else {
 458                 printk(KERN_ERR "could not obtain gpio for "
 459                                         "OVERO_GPIO_W2W_NRESET\n");
 460         }
 461
 462         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 463             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 464                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 465         else
 466                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 467
 468         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 469             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 470                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 471                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 472                 mdelay(6);
 473                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 474         } else {
 475                 printk(KERN_ERR "could not obtain gpio for "
 476                                         "OVERO_GPIO_BT_NRESET\n");
 477         }
 478
 479         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 480             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 481                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 482         else
 483                 printk(KERN_ERR "could not obtain gpio for "
 484                                         "OVERO_GPIO_USBH_CPEN\n");
 485 }
 486
 487 static void __init overo_map_io(void)
 488 {
 489         omap2_set_globals_343x();
 490         omap34xx_map_common_io();
 491 }
 492
 493 MACHINE_START(OVERO, "Gumstix Overo")
 494         .phys_io        = 0x48000000,
 495         .io_pg_offst    = ((0xfa000000) >> 18) & 0xfffc,
 496         .boot_params    = 0x80000100,
 497         .map_io         = overo_map_io,
 498         .reserve        = omap_reserve,
 499         .init_irq       = overo_init_irq,
 500         .init_machine   = overo_init,
 501         .timer          = &omap_timer,
 502 MACHINE_END