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.h>
  42 #include <mach/common.h>
  43 #include <mach/gpio.h>
  44 #include <mach/gpmc.h>
  45 #include <mach/hardware.h>
  46 #include <mach/nand.h>
  47 #include <mach/usb.h>
  48
  49 #include "sdram-micron-mt46h32m32lf-6.h"
  50 #include "mmc-twl4030.h"
  51
  52 #define OVERO_GPIO_BT_XGATE     15
  53 #define OVERO_GPIO_W2W_NRESET   16
  54 #define OVERO_GPIO_BT_NRESET    164
  55 #define OVERO_GPIO_USBH_CPEN    168
  56 #define OVERO_GPIO_USBH_NRESET  183
  57
  58 #define NAND_BLOCK_SIZE SZ_128K
  59 #define GPMC_CS0_BASE  0x60
  60 #define GPMC_CS_SIZE   0x30
  61
  62 #define OVERO_SMSC911X_CS      5
  63 #define OVERO_SMSC911X_GPIO    176
  64
  65 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  66         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  67
  68 #include <mach/mcspi.h>
  69 #include <linux/spi/spi.h>
  70 #include <linux/spi/ads7846.h>
  71
  72 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  73         .turbo_mode     = 0,
  74         .single_channel = 1,    /* 0: slave, 1: master */
  75 };
  76
  77 static int ads7846_get_pendown_state(void)
  78 {
  79         return !gpio_get_value(OVERO_GPIO_PENDOWN);
  80 }
  81
  82 static struct ads7846_platform_data ads7846_config = {
  83         .x_max                  = 0x0fff,
  84         .y_max                  = 0x0fff,
  85         .x_plate_ohms           = 180,
  86         .pressure_max           = 255,
  87         .debounce_max           = 10,
  88         .debounce_tol           = 3,
  89         .debounce_rep           = 1,
  90         .get_pendown_state      = ads7846_get_pendown_state,
  91         .keep_vref_on           = 1,
  92 };
  93
  94 static struct spi_board_info overo_spi_board_info[] __initdata = {
  95         {
  96                 .modalias               = "ads7846",
  97                 .bus_num                = 1,
  98                 .chip_select            = 0,
  99                 .max_speed_hz           = 1500000,
 100                 .controller_data        = &ads7846_mcspi_config,
 101                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 102                 .platform_data          = &ads7846_config,
 103         }
 104 };
 105
 106 static void __init overo_ads7846_init(void)
 107 {
 108         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 109             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 110                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 111         } else {
 112                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 113                 return;
 114         }
 115
 116         spi_register_board_info(overo_spi_board_info,
 117                         ARRAY_SIZE(overo_spi_board_info));
 118 }
 119
 120 #else
 121 static inline void __init overo_ads7846_init(void) { return; }
 122 #endif
 123
 124 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 125
 126 #include <linux/smsc911x.h>
 127
 128 static struct resource overo_smsc911x_resources[] = {
 129         {
 130                 .name   = "smsc911x-memory",
 131                 .flags  = IORESOURCE_MEM,
 132         },
 133         {
 134                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 135         },
 136 };
 137
 138 static struct smsc911x_platform_config overo_smsc911x_config = {
 139         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 140         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 141         .flags          = SMSC911X_USE_32BIT ,
 142         .phy_interface  = PHY_INTERFACE_MODE_MII,
 143 };
 144
 145 static struct platform_device overo_smsc911x_device = {
 146         .name           = "smsc911x",
 147         .id             = -1,
 148         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 149         .resource       = &overo_smsc911x_resources,
 150         .dev            = {
 151                 .platform_data = &overo_smsc911x_config,
 152         },
 153 };
 154
 155 static inline void __init overo_init_smsc911x(void)
 156 {
 157         unsigned long cs_mem_base;
 158
 159         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 160                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 161                 return;
 162         }
 163
 164         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 165         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 166
 167         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 168             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 169                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 170         } else {
 171                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 172                 return;
 173         }
 174
 175         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 176         overo_smsc911x_resources[1].end   = 0;
 177
 178         platform_device_register(&overo_smsc911x_device);
 179 }
 180
 181 #else
 182 static inline void __init overo_init_smsc911x(void) { return; }
 183 #endif
 184
 185 static struct mtd_partition overo_nand_partitions[] = {
 186         {
 187                 .name           = "xloader",
 188                 .offset         = 0,                    /* Offset = 0x00000 */
 189                 .size           = 4 * NAND_BLOCK_SIZE,
 190                 .mask_flags     = MTD_WRITEABLE
 191         },
 192         {
 193                 .name           = "uboot",
 194                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 195                 .size           = 14 * NAND_BLOCK_SIZE,
 196         },
 197         {
 198                 .name           = "uboot environment",
 199                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 200                 .size           = 2 * NAND_BLOCK_SIZE,
 201         },
 202         {
 203                 .name           = "linux",
 204                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 205                 .size           = 32 * NAND_BLOCK_SIZE,
 206         },
 207         {
 208                 .name           = "rootfs",
 209                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 210                 .size           = MTDPART_SIZ_FULL,
 211         },
 212 };
 213
 214 static struct omap_nand_platform_data overo_nand_data = {
 215         .parts = overo_nand_partitions,
 216         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 217         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 218 };
 219
 220 static struct resource overo_nand_resource = {
 221         .flags          = IORESOURCE_MEM,
 222 };
 223
 224 static struct platform_device overo_nand_device = {
 225         .name           = "omap2-nand",
 226         .id             = -1,
 227         .dev            = {
 228                 .platform_data  = &overo_nand_data,
 229         },
 230         .num_resources  = 1,
 231         .resource       = &overo_nand_resource,
 232 };
 233
 234
 235 static void __init overo_flash_init(void)
 236 {
 237         u8 cs = 0;
 238         u8 nandcs = GPMC_CS_NUM + 1;
 239
 240         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 241
 242         /* find out the chip-select on which NAND exists */
 243         while (cs < GPMC_CS_NUM) {
 244                 u32 ret = 0;
 245                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 246
 247                 if ((ret & 0xC00) == 0x800) {
 248                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 249                         if (nandcs > GPMC_CS_NUM)
 250                                 nandcs = cs;
 251                 }
 252                 cs++;
 253         }
 254
 255         if (nandcs > GPMC_CS_NUM) {
 256                 printk(KERN_INFO "NAND: Unable to find configuration "
 257                                  "in GPMC\n ");
 258                 return;
 259         }
 260
 261         if (nandcs < GPMC_CS_NUM) {
 262                 overo_nand_data.cs = nandcs;
 263                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 264                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 265                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 266
 267                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 268                 if (platform_device_register(&overo_nand_device) < 0)
 269                         printk(KERN_ERR "Unable to register NAND device\n");
 270         }
 271 }
 272 static struct omap_uart_config overo_uart_config __initdata = {
 273         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 274 };
 275
 276 static struct twl4030_hsmmc_info mmc[] = {
 277         {
 278                 .mmc            = 1,
 279                 .wires          = 4,
 280                 .gpio_cd        = -EINVAL,
 281                 .gpio_wp        = -EINVAL,
 282         },
 283         {
 284                 .mmc            = 2,
 285                 .wires          = 4,
 286                 .gpio_cd        = -EINVAL,
 287                 .gpio_wp        = -EINVAL,
 288                 .transceiver    = true,
 289                 .ocr_mask       = 0x00100000,   /* 3.3V */
 290         },
 291         {}      /* Terminator */
 292 };
 293
 294 static struct regulator_consumer_supply overo_vmmc1_supply = {
 295         .supply                 = "vmmc",
 296 };
 297
 298 static int overo_twl_gpio_setup(struct device *dev,
 299                 unsigned gpio, unsigned ngpio)
 300 {
 301         twl4030_mmc_init(mmc);
 302
 303         overo_vmmc1_supply.dev = mmc[0].dev;
 304
 305         return 0;
 306 }
 307
 308 static struct twl4030_gpio_platform_data overo_gpio_data = {
 309         .gpio_base      = OMAP_MAX_GPIO_LINES,
 310         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 311         .irq_end        = TWL4030_GPIO_IRQ_END,
 312         .setup          = overo_twl_gpio_setup,
 313 };
 314
 315 static struct twl4030_usb_data overo_usb_data = {
 316         .usb_mode       = T2_USB_MODE_ULPI,
 317 };
 318
 319 static struct regulator_init_data overo_vmmc1 = {
 320         .constraints = {
 321                 .min_uV                 = 1850000,
 322                 .max_uV                 = 3150000,
 323                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 324                                         | REGULATOR_MODE_STANDBY,
 325                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 326                                         | REGULATOR_CHANGE_MODE
 327                                         | REGULATOR_CHANGE_STATUS,
 328         },
 329         .num_consumer_supplies  = 1,
 330         .consumer_supplies      = &overo_vmmc1_supply,
 331 };
 332
 333 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
 334
 335 static struct twl4030_platform_data overo_twldata = {
 336         .irq_base       = TWL4030_IRQ_BASE,
 337         .irq_end        = TWL4030_IRQ_END,
 338         .gpio           = &overo_gpio_data,
 339         .usb            = &overo_usb_data,
 340         .vmmc1          = &overo_vmmc1,
 341 };
 342
 343 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 344         {
 345                 I2C_BOARD_INFO("tps65950", 0x48),
 346                 .flags = I2C_CLIENT_WAKE,
 347                 .irq = INT_34XX_SYS_NIRQ,
 348                 .platform_data = &overo_twldata,
 349         },
 350 };
 351
 352 static int __init overo_i2c_init(void)
 353 {
 354         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 355                         ARRAY_SIZE(overo_i2c_boardinfo));
 356         /* i2c2 pins are used for gpio */
 357         omap_register_i2c_bus(3, 400, NULL, 0);
 358         return 0;
 359 }
 360
 361 static void __init overo_init_irq(void)
 362 {
 363         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 364         omap_init_irq();
 365         omap_gpio_init();
 366 }
 367
 368 static struct platform_device overo_lcd_device = {
 369         .name           = "overo_lcd",
 370         .id             = -1,
 371 };
 372
 373 static struct omap_lcd_config overo_lcd_config __initdata = {
 374         .ctrl_name      = "internal",
 375 };
 376
 377 static struct omap_board_config_kernel overo_config[] __initdata = {
 378         { OMAP_TAG_UART,        &overo_uart_config },
 379         { OMAP_TAG_LCD,         &overo_lcd_config },
 380 };
 381
 382 static struct platform_device *overo_devices[] __initdata = {
 383         &overo_lcd_device,
 384 };
 385
 386 static void __init overo_init(void)
 387 {
 388         overo_i2c_init();
 389         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 390         omap_board_config = overo_config;
 391         omap_board_config_size = ARRAY_SIZE(overo_config);
 392         omap_serial_init();
 393         overo_flash_init();
 394         usb_musb_init();
 395         overo_ads7846_init();
 396         overo_init_smsc911x();
 397
 398         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 399                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 400             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 401                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 402                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 403                 udelay(10);
 404                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 405         } else {
 406                 printk(KERN_ERR "could not obtain gpio for "
 407                                         "OVERO_GPIO_W2W_NRESET\n");
 408         }
 409
 410         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 411             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 412                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 413         else
 414                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 415
 416         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 417             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 418                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 419                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 420                 mdelay(6);
 421                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 422         } else {
 423                 printk(KERN_ERR "could not obtain gpio for "
 424                                         "OVERO_GPIO_BT_NRESET\n");
 425         }
 426
 427         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 428             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 429                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 430         else
 431                 printk(KERN_ERR "could not obtain gpio for "
 432                                         "OVERO_GPIO_USBH_CPEN\n");
 433
 434         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
 435                           "OVERO_GPIO_USBH_NRESET") == 0) &&
 436             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
 437                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
 438         else
 439                 printk(KERN_ERR "could not obtain gpio for "
 440                                         "OVERO_GPIO_USBH_NRESET\n");
 441 }
 442
 443 static void __init overo_map_io(void)
 444 {
 445         omap2_set_globals_343x();
 446         omap2_map_common_io();
 447 }
 448
 449 MACHINE_START(OVERO, "Gumstix Overo")
 450         .phys_io        = 0x48000000,
 451         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 452         .boot_params    = 0x80000100,
 453         .map_io         = overo_map_io,
 454         .init_irq       = overo_init_irq,
 455         .init_machine   = overo_init,
 456         .timer          = &omap_timer,
 457 MACHINE_END