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/mux.h>
  48 #include <mach/usb.h>
  49
  50 #include "sdram-micron-mt46h32m32lf-6.h"
  51 #include "mmc-twl4030.h"
  52
  53 #define OVERO_GPIO_BT_XGATE     15
  54 #define OVERO_GPIO_W2W_NRESET   16
  55 #define OVERO_GPIO_BT_NRESET    164
  56 #define OVERO_GPIO_USBH_CPEN    168
  57 #define OVERO_GPIO_USBH_NRESET  183
  58
  59 #define NAND_BLOCK_SIZE SZ_128K
  60 #define GPMC_CS0_BASE  0x60
  61 #define GPMC_CS_SIZE   0x30
  62
  63 #define OVERO_SMSC911X_CS      5
  64 #define OVERO_SMSC911X_GPIO    176
  65
  66 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  67         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  68
  69 #include <mach/mcspi.h>
  70 #include <linux/spi/spi.h>
  71 #include <linux/spi/ads7846.h>
  72
  73 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  74         .turbo_mode     = 0,
  75         .single_channel = 1,    /* 0: slave, 1: master */
  76 };
  77
  78 static int ads7846_get_pendown_state(void)
  79 {
  80         return !gpio_get_value(OVERO_GPIO_PENDOWN);
  81 }
  82
  83 static struct ads7846_platform_data ads7846_config = {
  84         .x_max                  = 0x0fff,
  85         .y_max                  = 0x0fff,
  86         .x_plate_ohms           = 180,
  87         .pressure_max           = 255,
  88         .debounce_max           = 10,
  89         .debounce_tol           = 3,
  90         .debounce_rep           = 1,
  91         .get_pendown_state      = ads7846_get_pendown_state,
  92         .keep_vref_on           = 1,
  93 };
  94
  95 static struct spi_board_info overo_spi_board_info[] __initdata = {
  96         {
  97                 .modalias               = "ads7846",
  98                 .bus_num                = 1,
  99                 .chip_select            = 0,
 100                 .max_speed_hz           = 1500000,
 101                 .controller_data        = &ads7846_mcspi_config,
 102                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 103                 .platform_data          = &ads7846_config,
 104         }
 105 };
 106
 107 static void __init overo_ads7846_init(void)
 108 {
 109         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 110             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 111                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 112         } else {
 113                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 114                 return;
 115         }
 116
 117         spi_register_board_info(overo_spi_board_info,
 118                         ARRAY_SIZE(overo_spi_board_info));
 119 }
 120
 121 #else
 122 static inline void __init overo_ads7846_init(void) { return; }
 123 #endif
 124
 125 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 126
 127 #include <linux/smsc911x.h>
 128
 129 static struct resource overo_smsc911x_resources[] = {
 130         {
 131                 .name   = "smsc911x-memory",
 132                 .flags  = IORESOURCE_MEM,
 133         },
 134         {
 135                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 136         },
 137 };
 138
 139 static struct smsc911x_platform_config overo_smsc911x_config = {
 140         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 141         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 142         .flags          = SMSC911X_USE_32BIT ,
 143         .phy_interface  = PHY_INTERFACE_MODE_MII,
 144 };
 145
 146 static struct platform_device overo_smsc911x_device = {
 147         .name           = "smsc911x",
 148         .id             = -1,
 149         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 150         .resource       = &overo_smsc911x_resources,
 151         .dev            = {
 152                 .platform_data = &overo_smsc911x_config,
 153         },
 154 };
 155
 156 static inline void __init overo_init_smsc911x(void)
 157 {
 158         unsigned long cs_mem_base;
 159
 160         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 161                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 162                 return;
 163         }
 164
 165         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 166         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 167
 168         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 169             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 170                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 171         } else {
 172                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 173                 return;
 174         }
 175
 176         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 177         overo_smsc911x_resources[1].end   = 0;
 178
 179         platform_device_register(&overo_smsc911x_device);
 180 }
 181
 182 #else
 183 static inline void __init overo_init_smsc911x(void) { return; }
 184 #endif
 185
 186 static struct mtd_partition overo_nand_partitions[] = {
 187         {
 188                 .name           = "xloader",
 189                 .offset         = 0,                    /* Offset = 0x00000 */
 190                 .size           = 4 * NAND_BLOCK_SIZE,
 191                 .mask_flags     = MTD_WRITEABLE
 192         },
 193         {
 194                 .name           = "uboot",
 195                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 196                 .size           = 14 * NAND_BLOCK_SIZE,
 197         },
 198         {
 199                 .name           = "uboot environment",
 200                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 201                 .size           = 2 * NAND_BLOCK_SIZE,
 202         },
 203         {
 204                 .name           = "linux",
 205                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 206                 .size           = 32 * NAND_BLOCK_SIZE,
 207         },
 208         {
 209                 .name           = "rootfs",
 210                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 211                 .size           = MTDPART_SIZ_FULL,
 212         },
 213 };
 214
 215 static struct omap_nand_platform_data overo_nand_data = {
 216         .parts = overo_nand_partitions,
 217         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 218         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 219 };
 220
 221 static struct resource overo_nand_resource = {
 222         .flags          = IORESOURCE_MEM,
 223 };
 224
 225 static struct platform_device overo_nand_device = {
 226         .name           = "omap2-nand",
 227         .id             = -1,
 228         .dev            = {
 229                 .platform_data  = &overo_nand_data,
 230         },
 231         .num_resources  = 1,
 232         .resource       = &overo_nand_resource,
 233 };
 234
 235
 236 static void __init overo_flash_init(void)
 237 {
 238         u8 cs = 0;
 239         u8 nandcs = GPMC_CS_NUM + 1;
 240
 241         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 242
 243         /* find out the chip-select on which NAND exists */
 244         while (cs < GPMC_CS_NUM) {
 245                 u32 ret = 0;
 246                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 247
 248                 if ((ret & 0xC00) == 0x800) {
 249                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 250                         if (nandcs > GPMC_CS_NUM)
 251                                 nandcs = cs;
 252                 }
 253                 cs++;
 254         }
 255
 256         if (nandcs > GPMC_CS_NUM) {
 257                 printk(KERN_INFO "NAND: Unable to find configuration "
 258                                  "in GPMC\n ");
 259                 return;
 260         }
 261
 262         if (nandcs < GPMC_CS_NUM) {
 263                 overo_nand_data.cs = nandcs;
 264                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 265                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 266                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 267
 268                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 269                 if (platform_device_register(&overo_nand_device) < 0)
 270                         printk(KERN_ERR "Unable to register NAND device\n");
 271         }
 272 }
 273 static struct omap_uart_config overo_uart_config __initdata = {
 274         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 275 };
 276
 277 static struct twl4030_hsmmc_info mmc[] = {
 278         {
 279                 .mmc            = 1,
 280                 .wires          = 4,
 281                 .gpio_cd        = -EINVAL,
 282                 .gpio_wp        = -EINVAL,
 283         },
 284         {
 285                 .mmc            = 2,
 286                 .wires          = 4,
 287                 .gpio_cd        = -EINVAL,
 288                 .gpio_wp        = -EINVAL,
 289                 .transceiver    = true,
 290                 .ocr_mask       = 0x00100000,   /* 3.3V */
 291         },
 292         {}      /* Terminator */
 293 };
 294
 295 static struct regulator_consumer_supply overo_vmmc1_supply = {
 296         .supply                 = "vmmc",
 297 };
 298
 299 static int overo_twl_gpio_setup(struct device *dev,
 300                 unsigned gpio, unsigned ngpio)
 301 {
 302         twl4030_mmc_init(mmc);
 303
 304         overo_vmmc1_supply.dev = mmc[0].dev;
 305
 306         return 0;
 307 }
 308
 309 static struct twl4030_gpio_platform_data overo_gpio_data = {
 310         .gpio_base      = OMAP_MAX_GPIO_LINES,
 311         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 312         .irq_end        = TWL4030_GPIO_IRQ_END,
 313         .setup          = overo_twl_gpio_setup,
 314 };
 315
 316 static struct twl4030_usb_data overo_usb_data = {
 317         .usb_mode       = T2_USB_MODE_ULPI,
 318 };
 319
 320 static struct regulator_init_data overo_vmmc1 = {
 321         .constraints = {
 322                 .min_uV                 = 1850000,
 323                 .max_uV                 = 3150000,
 324                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 325                                         | REGULATOR_MODE_STANDBY,
 326                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 327                                         | REGULATOR_CHANGE_MODE
 328                                         | REGULATOR_CHANGE_STATUS,
 329         },
 330         .num_consumer_supplies  = 1,
 331         .consumer_supplies      = &overo_vmmc1_supply,
 332 };
 333
 334 /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */
 335
 336 static struct twl4030_platform_data overo_twldata = {
 337         .irq_base       = TWL4030_IRQ_BASE,
 338         .irq_end        = TWL4030_IRQ_END,
 339         .gpio           = &overo_gpio_data,
 340         .usb            = &overo_usb_data,
 341         .vmmc1          = &overo_vmmc1,
 342 };
 343
 344 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 345         {
 346                 I2C_BOARD_INFO("tps65950", 0x48),
 347                 .flags = I2C_CLIENT_WAKE,
 348                 .irq = INT_34XX_SYS_NIRQ,
 349                 .platform_data = &overo_twldata,
 350         },
 351 };
 352
 353 static int __init overo_i2c_init(void)
 354 {
 355         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 356                         ARRAY_SIZE(overo_i2c_boardinfo));
 357         /* i2c2 pins are used for gpio */
 358         omap_register_i2c_bus(3, 400, NULL, 0);
 359         return 0;
 360 }
 361
 362 static void __init overo_init_irq(void)
 363 {
 364         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 365                              mt46h32m32lf6_sdrc_params);
 366         omap_init_irq();
 367         omap_gpio_init();
 368 }
 369
 370 static struct platform_device overo_lcd_device = {
 371         .name           = "overo_lcd",
 372         .id             = -1,
 373 };
 374
 375 static struct omap_lcd_config overo_lcd_config __initdata = {
 376         .ctrl_name      = "internal",
 377 };
 378
 379 static struct omap_board_config_kernel overo_config[] __initdata = {
 380         { OMAP_TAG_UART,        &overo_uart_config },
 381         { OMAP_TAG_LCD,         &overo_lcd_config },
 382 };
 383
 384 static struct platform_device *overo_devices[] __initdata = {
 385         &overo_lcd_device,
 386 };
 387
 388 static void __init overo_init(void)
 389 {
 390         overo_i2c_init();
 391         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 392         omap_board_config = overo_config;
 393         omap_board_config_size = ARRAY_SIZE(overo_config);
 394         omap_serial_init();
 395         overo_flash_init();
 396         usb_musb_init();
 397         overo_ads7846_init();
 398         overo_init_smsc911x();
 399
 400         /* Ensure SDRC pins are mux'd for self-refresh */
 401         omap_cfg_reg(H16_34XX_SDRC_CKE0);
 402         omap_cfg_reg(H17_34XX_SDRC_CKE1);
 403
 404         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 405                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 406             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 407                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 408                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 409                 udelay(10);
 410                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 411         } else {
 412                 printk(KERN_ERR "could not obtain gpio for "
 413                                         "OVERO_GPIO_W2W_NRESET\n");
 414         }
 415
 416         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 417             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 418                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 419         else
 420                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 421
 422         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 423             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 424                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 425                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 426                 mdelay(6);
 427                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 428         } else {
 429                 printk(KERN_ERR "could not obtain gpio for "
 430                                         "OVERO_GPIO_BT_NRESET\n");
 431         }
 432
 433         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 434             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 435                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 436         else
 437                 printk(KERN_ERR "could not obtain gpio for "
 438                                         "OVERO_GPIO_USBH_CPEN\n");
 439
 440         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
 441                           "OVERO_GPIO_USBH_NRESET") == 0) &&
 442             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
 443                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
 444         else
 445                 printk(KERN_ERR "could not obtain gpio for "
 446                                         "OVERO_GPIO_USBH_NRESET\n");
 447 }
 448
 449 static void __init overo_map_io(void)
 450 {
 451         omap2_set_globals_343x();
 452         omap2_map_common_io();
 453 }
 454
 455 MACHINE_START(OVERO, "Gumstix Overo")
 456         .phys_io        = 0x48000000,
 457         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 458         .boot_params    = 0x80000100,
 459         .map_io         = overo_map_io,
 460         .init_irq       = overo_init_irq,
 461         .init_machine   = overo_init,
 462         .timer          = &omap_timer,
 463 MACHINE_END