SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 "sdram-micron-mt46h32m32lf-6.h"
  49 #include "mmc-twl4030.h"
  50
  51 #define OVERO_GPIO_BT_XGATE     15
  52 #define OVERO_GPIO_W2W_NRESET   16
  53 #define OVERO_GPIO_BT_NRESET    164
  54 #define OVERO_GPIO_USBH_CPEN    168
  55 #define OVERO_GPIO_USBH_NRESET  183
  56
  57 #define NAND_BLOCK_SIZE SZ_128K
  58 #define GPMC_CS0_BASE  0x60
  59 #define GPMC_CS_SIZE   0x30
  60
  61 #define OVERO_SMSC911X_CS      5
  62 #define OVERO_SMSC911X_GPIO    176
  63
  64 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  65         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  66
  67 #include <mach/mcspi.h>
  68 #include <linux/spi/spi.h>
  69 #include <linux/spi/ads7846.h>
  70
  71 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  72         .turbo_mode     = 0,
  73         .single_channel = 1,    /* 0: slave, 1: master */
  74 };
  75
  76 static int ads7846_get_pendown_state(void)
  77 {
  78         return !gpio_get_value(OVERO_GPIO_PENDOWN);
  79 }
  80
  81 static struct ads7846_platform_data ads7846_config = {
  82         .x_max                  = 0x0fff,
  83         .y_max                  = 0x0fff,
  84         .x_plate_ohms           = 180,
  85         .pressure_max           = 255,
  86         .debounce_max           = 10,
  87         .debounce_tol           = 3,
  88         .debounce_rep           = 1,
  89         .get_pendown_state      = ads7846_get_pendown_state,
  90         .keep_vref_on           = 1,
  91 };
  92
  93 static struct spi_board_info overo_spi_board_info[] __initdata = {
  94         {
  95                 .modalias               = "ads7846",
  96                 .bus_num                = 1,
  97                 .chip_select            = 0,
  98                 .max_speed_hz           = 1500000,
  99                 .controller_data        = &ads7846_mcspi_config,
 100                 .irq                    = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
 101                 .platform_data          = &ads7846_config,
 102         }
 103 };
 104
 105 static void __init overo_ads7846_init(void)
 106 {
 107         if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 108             (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
 109                 gpio_export(OVERO_GPIO_PENDOWN, 0);
 110         } else {
 111                 printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
 112                 return;
 113         }
 114
 115         spi_register_board_info(overo_spi_board_info,
 116                         ARRAY_SIZE(overo_spi_board_info));
 117 }
 118
 119 #else
 120 static inline void __init overo_ads7846_init(void) { return; }
 121 #endif
 122
 123 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 124
 125 #include <linux/smsc911x.h>
 126
 127 static struct resource overo_smsc911x_resources[] = {
 128         {
 129                 .name   = "smsc911x-memory",
 130                 .flags  = IORESOURCE_MEM,
 131         },
 132         {
 133                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 134         },
 135 };
 136
 137 static struct smsc911x_platform_config overo_smsc911x_config = {
 138         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 139         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 140         .flags          = SMSC911X_USE_32BIT ,
 141         .phy_interface  = PHY_INTERFACE_MODE_MII,
 142 };
 143
 144 static struct platform_device overo_smsc911x_device = {
 145         .name           = "smsc911x",
 146         .id             = -1,
 147         .num_resources  = ARRAY_SIZE(overo_smsc911x_resources),
 148         .resource       = &overo_smsc911x_resources,
 149         .dev            = {
 150                 .platform_data = &overo_smsc911x_config,
 151         },
 152 };
 153
 154 static inline void __init overo_init_smsc911x(void)
 155 {
 156         unsigned long cs_mem_base;
 157
 158         if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
 159                 printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
 160                 return;
 161         }
 162
 163         overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
 164         overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;
 165
 166         if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
 167             (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
 168                 gpio_export(OVERO_SMSC911X_GPIO, 0);
 169         } else {
 170                 printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
 171                 return;
 172         }
 173
 174         overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
 175         overo_smsc911x_resources[1].end   = 0;
 176
 177         platform_device_register(&overo_smsc911x_device);
 178 }
 179
 180 #else
 181 static inline void __init overo_init_smsc911x(void) { return; }
 182 #endif
 183
 184 static struct mtd_partition overo_nand_partitions[] = {
 185         {
 186                 .name           = "xloader",
 187                 .offset         = 0,                    /* Offset = 0x00000 */
 188                 .size           = 4 * NAND_BLOCK_SIZE,
 189                 .mask_flags     = MTD_WRITEABLE
 190         },
 191         {
 192                 .name           = "uboot",
 193                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 194                 .size           = 14 * NAND_BLOCK_SIZE,
 195         },
 196         {
 197                 .name           = "uboot environment",
 198                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 199                 .size           = 2 * NAND_BLOCK_SIZE,
 200         },
 201         {
 202                 .name           = "linux",
 203                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 204                 .size           = 32 * NAND_BLOCK_SIZE,
 205         },
 206         {
 207                 .name           = "rootfs",
 208                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 209                 .size           = MTDPART_SIZ_FULL,
 210         },
 211 };
 212
 213 static struct omap_nand_platform_data overo_nand_data = {
 214         .parts = overo_nand_partitions,
 215         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
 216         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
 217 };
 218
 219 static struct resource overo_nand_resource = {
 220         .flags          = IORESOURCE_MEM,
 221 };
 222
 223 static struct platform_device overo_nand_device = {
 224         .name           = "omap2-nand",
 225         .id             = -1,
 226         .dev            = {
 227                 .platform_data  = &overo_nand_data,
 228         },
 229         .num_resources  = 1,
 230         .resource       = &overo_nand_resource,
 231 };
 232
 233
 234 static void __init overo_flash_init(void)
 235 {
 236         u8 cs = 0;
 237         u8 nandcs = GPMC_CS_NUM + 1;
 238
 239         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 240
 241         /* find out the chip-select on which NAND exists */
 242         while (cs < GPMC_CS_NUM) {
 243                 u32 ret = 0;
 244                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 245
 246                 if ((ret & 0xC00) == 0x800) {
 247                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 248                         if (nandcs > GPMC_CS_NUM)
 249                                 nandcs = cs;
 250                 }
 251                 cs++;
 252         }
 253
 254         if (nandcs > GPMC_CS_NUM) {
 255                 printk(KERN_INFO "NAND: Unable to find configuration "
 256                                  "in GPMC\n ");
 257                 return;
 258         }
 259
 260         if (nandcs < GPMC_CS_NUM) {
 261                 overo_nand_data.cs = nandcs;
 262                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 263                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 264                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 265
 266                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 267                 if (platform_device_register(&overo_nand_device) < 0)
 268                         printk(KERN_ERR "Unable to register NAND device\n");
 269         }
 270 }
 271 static struct omap_uart_config overo_uart_config __initdata = {
 272         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 273 };
 274
 275 static struct twl4030_gpio_platform_data overo_gpio_data = {
 276         .gpio_base      = OMAP_MAX_GPIO_LINES,
 277         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 278         .irq_end        = TWL4030_GPIO_IRQ_END,
 279 };
 280
 281 static struct twl4030_platform_data overo_twldata = {
 282         .irq_base       = TWL4030_IRQ_BASE,
 283         .irq_end        = TWL4030_IRQ_END,
 284         .gpio           = &overo_gpio_data,
 285 };
 286
 287 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 288         {
 289                 I2C_BOARD_INFO("twl4030", 0x48),
 290                 .flags = I2C_CLIENT_WAKE,
 291                 .irq = INT_34XX_SYS_NIRQ,
 292                 .platform_data = &overo_twldata,
 293         },
 294 };
 295
 296 static int __init overo_i2c_init(void)
 297 {
 298         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 299                         ARRAY_SIZE(overo_i2c_boardinfo));
 300         /* i2c2 pins are used for gpio */
 301         omap_register_i2c_bus(3, 400, NULL, 0);
 302         return 0;
 303 }
 304
 305 static void __init overo_init_irq(void)
 306 {
 307         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 308         omap_init_irq();
 309         omap_gpio_init();
 310 }
 311
 312 static struct platform_device overo_lcd_device = {
 313         .name           = "overo_lcd",
 314         .id             = -1,
 315 };
 316
 317 static struct omap_lcd_config overo_lcd_config __initdata = {
 318         .ctrl_name      = "internal",
 319 };
 320
 321 static struct omap_board_config_kernel overo_config[] __initdata = {
 322         { OMAP_TAG_UART,        &overo_uart_config },
 323         { OMAP_TAG_LCD,         &overo_lcd_config },
 324 };
 325
 326 static struct platform_device *overo_devices[] __initdata = {
 327         &overo_lcd_device,
 328 };
 329
 330 static struct twl4030_hsmmc_info mmc[] __initdata = {
 331         {
 332                 .mmc            = 1,
 333                 .wires          = 4,
 334                 .gpio_cd        = -EINVAL,
 335                 .gpio_wp        = -EINVAL,
 336         },
 337         {
 338                 .mmc            = 2,
 339                 .wires          = 4,
 340                 .gpio_cd        = -EINVAL,
 341                 .gpio_wp        = -EINVAL,
 342                 .transceiver    = true,
 343         },
 344         {}      /* Terminator */
 345 };
 346
 347 static void __init overo_init(void)
 348 {
 349         overo_i2c_init();
 350         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 351         omap_board_config = overo_config;
 352         omap_board_config_size = ARRAY_SIZE(overo_config);
 353         omap_serial_init();
 354         twl4030_mmc_init(mmc);
 355         overo_flash_init();
 356         usb_musb_init();
 357         overo_ads7846_init();
 358         overo_init_smsc911x();
 359
 360         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 361                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 362             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 363                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 364                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 365                 udelay(10);
 366                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 367         } else {
 368                 printk(KERN_ERR "could not obtain gpio for "
 369                                         "OVERO_GPIO_W2W_NRESET\n");
 370         }
 371
 372         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 373             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 374                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 375         else
 376                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 377
 378         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 379             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 380                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 381                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 382                 mdelay(6);
 383                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 384         } else {
 385                 printk(KERN_ERR "could not obtain gpio for "
 386                                         "OVERO_GPIO_BT_NRESET\n");
 387         }
 388
 389         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 390             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 391                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 392         else
 393                 printk(KERN_ERR "could not obtain gpio for "
 394                                         "OVERO_GPIO_USBH_CPEN\n");
 395
 396         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
 397                           "OVERO_GPIO_USBH_NRESET") == 0) &&
 398             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
 399                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
 400         else
 401                 printk(KERN_ERR "could not obtain gpio for "
 402                                         "OVERO_GPIO_USBH_NRESET\n");
 403 }
 404
 405 static void __init overo_map_io(void)
 406 {
 407         omap2_set_globals_343x();
 408         omap2_map_common_io();
 409 }
 410
 411 MACHINE_START(OVERO, "Gumstix Overo")
 412         .phys_io        = 0x48000000,
 413         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 414         .boot_params    = 0x80000100,
 415         .map_io         = overo_map_io,
 416         .init_irq       = overo_init_irq,
 417         .init_machine   = overo_init,
 418         .timer          = &omap_timer,
 419 MACHINE_END