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
  31 #include <linux/mtd/mtd.h>
  32 #include <linux/mtd/nand.h>
  33 #include <linux/mtd/partitions.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/flash.h>
  38 #include <asm/mach/map.h>
  39
  40 #include <mach/board.h>
  41 #include <mach/common.h>
  42 #include <mach/gpio.h>
  43 #include <mach/gpmc.h>
  44 #include <mach/hardware.h>
  45 #include <mach/nand.h>
  46 #include <mach/usb.h>
  47
  48 #include "mmc-twl4030.h"
  49
  50 #define OVERO_GPIO_BT_XGATE     15
  51 #define OVERO_GPIO_W2W_NRESET   16
  52 #define OVERO_GPIO_BT_NRESET    164
  53 #define OVERO_GPIO_USBH_CPEN    168
  54 #define OVERO_GPIO_USBH_NRESET  183
  55
  56 #define NAND_BLOCK_SIZE SZ_128K
  57 #define GPMC_CS0_BASE  0x60
  58 #define GPMC_CS_SIZE   0x30
  59
  60 #define OVERO_SMSC911X_CS      5
  61 #define OVERO_SMSC911X_GPIO    176
  62
  63 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  64         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  65
  66 #include <mach/mcspi.h>
  67 #include <linux/spi/spi.h>
  68 #include <linux/spi/ads7846.h>
  69
  70 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  71         .turbo_mode     = 0,
  72         .single_channel = 1,    /* 0: slave, 1: master */
  73 };
  74
  75 static int ads7846_get_pendown_state(void)
  76 {
  77         return !gpio_get_value(OVERO_GPIO_PENDOWN);
  78 }
  79
  80 static struct ads7846_platform_data ads7846_config = {
  81         .x_max                  = 0x0fff,
  82         .y_max                  = 0x0fff,
  83         .x_plate_ohms           = 180,
  84         .pressure_max           = 255,
  85         .debounce_max           = 10,
  86         .debounce_tol           = 3,
  87         .debounce_rep           = 1,
  88         .get_pendown_state      = ads7846_get_pendown_state,
  89         .keep_vref_on           = 1,
  90 };
  91
  92 static struct spi_board_info overo_spi_board_info[] __initdata = {
  93         {
  94                 .modalias               = "ads7846",
  95                 .bus_num                = 1,
  96                 .chip_select            = 0,
  97                 .max_speed_hz           = 1500000,
  98                 .controller_data        = &ads7846_mcspi_config,
  99                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 100                 .platform_data          = &ads7846_config,
 101         }
 102 };
 103
 104 static void __init overo_ads7846_init(void)
 105 {
 106         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 107             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 108                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 109         } else {
 110                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 111                 return;
 112         }
 113
 114         spi_register_board_info(overo_spi_board_info,
 115                         ARRAY_SIZE(overo_spi_board_info));
 116 }
 117
 118 #else
 119 static inline void __init overo_ads7846_init(void) { return; }
 120 #endif
 121
 122 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 123
 124 #include <linux/smsc911x.h>
 125
 126 static struct resource overo_smsc911x_resources[] = {
 127         {
 128                 .name   = "smsc911x-memory",
 129                 .flags  = IORESOURCE_MEM,
 130         },
 131         {
 132                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 133         },
 134 };
 135
 136 static struct smsc911x_platform_config overo_smsc911x_config = {
 137         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 138         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 139         .flags          = SMSC911X_USE_32BIT ,
 140         .phy_interface  = PHY_INTERFACE_MODE_MII,
 141 };
 142
 143 static struct platform_device overo_smsc911x_device = {
 144         .name           = "smsc911x",
 145         .id             = -1,
 146         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 147         .resource       = &overo_smsc911x_resources,
 148         .dev            = {
 149                 .platform_data = &overo_smsc911x_config,
 150         },
 151 };
 152
 153 static inline void __init overo_init_smsc911x(void)
 154 {
 155         unsigned long cs_mem_base;
 156
 157         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 158                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 159                 return;
 160         }
 161
 162         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 163         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 164
 165         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 166             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 167                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 168         } else {
 169                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 170                 return;
 171         }
 172
 173         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 174         overo_smsc911x_resources[1].end   = 0;
 175
 176         platform_device_register(&overo_smsc911x_device);
 177 }
 178
 179 #else
 180 static inline void __init overo_init_smsc911x(void) { return; }
 181 #endif
 182
 183 static struct mtd_partition overo_nand_partitions[] = {
 184         {
 185                 .name           = "xloader",
 186                 .offset         = 0,                    /* Offset = 0x00000 */
 187                 .size           = 4 * NAND_BLOCK_SIZE,
 188                 .mask_flags     = MTD_WRITEABLE
 189         },
 190         {
 191                 .name           = "uboot",
 192                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 193                 .size           = 14 * NAND_BLOCK_SIZE,
 194         },
 195         {
 196                 .name           = "uboot environment",
 197                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 198                 .size           = 2 * NAND_BLOCK_SIZE,
 199         },
 200         {
 201                 .name           = "linux",
 202                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 203                 .size           = 32 * NAND_BLOCK_SIZE,
 204         },
 205         {
 206                 .name           = "rootfs",
 207                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 208                 .size           = MTDPART_SIZ_FULL,
 209         },
 210 };
 211
 212 static struct omap_nand_platform_data overo_nand_data = {
 213         .parts = overo_nand_partitions,
 214         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 215         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 216 };
 217
 218 static struct resource overo_nand_resource = {
 219         .flags          = IORESOURCE_MEM,
 220 };
 221
 222 static struct platform_device overo_nand_device = {
 223         .name           = "omap2-nand",
 224         .id             = -1,
 225         .dev            = {
 226                 .platform_data  = &overo_nand_data,
 227         },
 228         .num_resources  = 1,
 229         .resource       = &overo_nand_resource,
 230 };
 231
 232
 233 static void __init overo_flash_init(void)
 234 {
 235         u8 cs = 0;
 236         u8 nandcs = GPMC_CS_NUM + 1;
 237
 238         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 239
 240         /* find out the chip-select on which NAND exists */
 241         while (cs < GPMC_CS_NUM) {
 242                 u32 ret = 0;
 243                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 244
 245                 if ((ret & 0xC00) == 0x800) {
 246                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 247                         if (nandcs > GPMC_CS_NUM)
 248                                 nandcs = cs;
 249                 }
 250                 cs++;
 251         }
 252
 253         if (nandcs > GPMC_CS_NUM) {
 254                 printk(KERN_INFO "NAND: Unable to find configuration "
 255                                  "in GPMC\n ");
 256                 return;
 257         }
 258
 259         if (nandcs < GPMC_CS_NUM) {
 260                 overo_nand_data.cs = nandcs;
 261                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 262                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 263                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 264
 265                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 266                 if (platform_device_register(&overo_nand_device) < 0)
 267                         printk(KERN_ERR "Unable to register NAND device\n");
 268         }
 269 }
 270 static struct omap_uart_config overo_uart_config __initdata = {
 271         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 272 };
 273
 274 static struct twl4030_gpio_platform_data overo_gpio_data = {
 275         .gpio_base      = OMAP_MAX_GPIO_LINES,
 276         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 277         .irq_end        = TWL4030_GPIO_IRQ_END,
 278 };
 279
 280 static struct twl4030_platform_data overo_twldata = {
 281         .irq_base       = TWL4030_IRQ_BASE,
 282         .irq_end        = TWL4030_IRQ_END,
 283         .gpio           = &overo_gpio_data,
 284 };
 285
 286 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 287         {
 288                 I2C_BOARD_INFO("twl4030", 0x48),
 289                 .flags = I2C_CLIENT_WAKE,
 290                 .irq = INT_34XX_SYS_NIRQ,
 291                 .platform_data = &overo_twldata,
 292         },
 293 };
 294
 295 static int __init overo_i2c_init(void)
 296 {
 297         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 298                         ARRAY_SIZE(overo_i2c_boardinfo));
 299         /* i2c2 pins are used for gpio */
 300         omap_register_i2c_bus(3, 400, NULL, 0);
 301         return 0;
 302 }
 303
 304 static void __init overo_init_irq(void)
 305 {
 306         omap2_init_common_hw(NULL);
 307         omap_init_irq();
 308         omap_gpio_init();
 309 }
 310
 311 static struct platform_device overo_lcd_device = {
 312         .name           = "overo_lcd",
 313         .id             = -1,
 314 };
 315
 316 static struct omap_lcd_config overo_lcd_config __initdata = {
 317         .ctrl_name      = "internal",
 318 };
 319
 320 static struct omap_board_config_kernel overo_config[] __initdata = {
 321         { OMAP_TAG_UART,        &overo_uart_config },
 322         { OMAP_TAG_LCD,         &overo_lcd_config },
 323 };
 324
 325 static struct platform_device *overo_devices[] __initdata = {
 326         &overo_lcd_device,
 327 };
 328
 329 static struct twl4030_hsmmc_info mmc[] __initdata = {
 330         {
 331                 .mmc            = 1,
 332                 .wires          = 4,
 333                 .gpio_cd        = -EINVAL,
 334                 .gpio_wp        = -EINVAL,
 335         },
 336         {
 337                 .mmc            = 2,
 338                 .wires          = 4,
 339                 .gpio_cd        = -EINVAL,
 340                 .gpio_wp        = -EINVAL,
 341                 .transceiver    = true,
 342         },
 343         {}      /* Terminator */
 344 };
 345
 346 static void __init overo_init(void)
 347 {
 348         overo_i2c_init();
 349         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 350         omap_board_config = overo_config;
 351         omap_board_config_size = ARRAY_SIZE(overo_config);
 352         omap_serial_init();
 353         twl4030_mmc_init(mmc);
 354         overo_flash_init();
 355         usb_musb_init();
 356         overo_ads7846_init();
 357         overo_init_smsc911x();
 358
 359         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 360                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 361             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 362                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 363                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 364                 udelay(10);
 365                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 366         } else {
 367                 printk(KERN_ERR "could not obtain gpio for "
 368                                         "OVERO_GPIO_W2W_NRESET\n");
 369         }
 370
 371         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 372             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 373                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 374         else
 375                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 376
 377         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 378             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 379                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 380                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 381                 mdelay(6);
 382                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 383         } else {
 384                 printk(KERN_ERR "could not obtain gpio for "
 385                                         "OVERO_GPIO_BT_NRESET\n");
 386         }
 387
 388         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 389             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 390                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 391         else
 392                 printk(KERN_ERR "could not obtain gpio for "
 393                                         "OVERO_GPIO_USBH_CPEN\n");
 394
 395         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
 396                           "OVERO_GPIO_USBH_NRESET") == 0) &&
 397             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
 398                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
 399         else
 400                 printk(KERN_ERR "could not obtain gpio for "
 401                                         "OVERO_GPIO_USBH_NRESET\n");
 402 }
 403
 404 static void __init overo_map_io(void)
 405 {
 406         omap2_set_globals_343x();
 407         omap2_map_common_io();
 408 }
 409
 410 MACHINE_START(OVERO, "Gumstix Overo")
 411         .phys_io        = 0x48000000,
 412         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 413         .boot_params    = 0x80000100,
 414         .map_io         = overo_map_io,
 415         .init_irq       = overo_init_irq,
 416         .init_machine   = overo_init,
 417         .timer          = &omap_timer,
 418 MACHINE_END