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