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   1 /*
   2  * board-cm-t35.c (CompuLab CM-T35 module)
   3  *
   4  * Copyright (C) 2009 CompuLab, Ltd.
   5  * Author: Mike Rapoport <mike@compulab.co.il>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19  * 02110-1301 USA
  20  *
  21  */
  22
  23 #include <linux/kernel.h>
  24 #include <linux/init.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/input.h>
  27 #include <linux/input/matrix_keypad.h>
  28 #include <linux/delay.h>
  29 #include <linux/gpio.h>
  30
  31 #include <linux/i2c/at24.h>
  32 #include <linux/i2c/twl4030.h>
  33 #include <linux/regulator/machine.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38
  39 #include <plat/board.h>
  40 #include <plat/common.h>
  41 #include <plat/mux.h>
  42 #include <plat/nand.h>
  43 #include <plat/gpmc.h>
  44 #include <plat/usb.h>
  45
  46 #include <mach/hardware.h>
  47
  48 #include "mux.h"
  49 #include "sdram-micron-mt46h32m32lf-6.h"
  50 #include "mmc-twl4030.h"
  51
  52 #define CM_T35_GPIO_PENDOWN     57
  53
  54 #define CM_T35_SMSC911X_CS      5
  55 #define CM_T35_SMSC911X_GPIO    163
  56 #define SB_T35_SMSC911X_CS      4
  57 #define SB_T35_SMSC911X_GPIO    65
  58
  59 #define NAND_BLOCK_SIZE         SZ_128K
  60 #define GPMC_CS0_BASE           0x60
  61 #define GPMC_CS0_BASE_ADDR      (OMAP34XX_GPMC_VIRT + GPMC_CS0_BASE)
  62
  63 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
  64 #include <linux/smsc911x.h>
  65
  66 static struct smsc911x_platform_config cm_t35_smsc911x_config = {
  67         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  68         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  69         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
  70         .phy_interface  = PHY_INTERFACE_MODE_MII,
  71 };
  72
  73 static struct resource cm_t35_smsc911x_resources[] = {
  74         {
  75                 .flags  = IORESOURCE_MEM,
  76         },
  77         {
  78                 .start  = OMAP_GPIO_IRQ(CM_T35_SMSC911X_GPIO),
  79                 .end    = OMAP_GPIO_IRQ(CM_T35_SMSC911X_GPIO),
  80                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  81         },
  82 };
  83
  84 static struct platform_device cm_t35_smsc911x_device = {
  85         .name           = "smsc911x",
  86         .id             = 0,
  87         .num_resources  = ARRAY_SIZE(cm_t35_smsc911x_resources),
  88         .resource       = cm_t35_smsc911x_resources,
  89         .dev            = {
  90                 .platform_data = &cm_t35_smsc911x_config,
  91         },
  92 };
  93
  94 static struct resource sb_t35_smsc911x_resources[] = {
  95         {
  96                 .flags  = IORESOURCE_MEM,
  97         },
  98         {
  99                 .start  = OMAP_GPIO_IRQ(SB_T35_SMSC911X_GPIO),
 100                 .end    = OMAP_GPIO_IRQ(SB_T35_SMSC911X_GPIO),
 101                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 102         },
 103 };
 104
 105 static struct platform_device sb_t35_smsc911x_device = {
 106         .name           = "smsc911x",
 107         .id             = 1,
 108         .num_resources  = ARRAY_SIZE(sb_t35_smsc911x_resources),
 109         .resource       = sb_t35_smsc911x_resources,
 110         .dev            = {
 111                 .platform_data = &cm_t35_smsc911x_config,
 112         },
 113 };
 114
 115 static void __init cm_t35_init_smsc911x(struct platform_device *dev,
 116                                         int cs, int irq_gpio)
 117 {
 118         unsigned long cs_mem_base;
 119
 120         if (gpmc_cs_request(cs, SZ_16M, &cs_mem_base) < 0) {
 121                 pr_err("CM-T35: Failed request for GPMC mem for smsc911x\n");
 122                 return;
 123         }
 124
 125         dev->resource[0].start = cs_mem_base + 0x0;
 126         dev->resource[0].end   = cs_mem_base + 0xff;
 127
 128         if ((gpio_request(irq_gpio, "ETH IRQ") == 0) &&
 129             (gpio_direction_input(irq_gpio) == 0)) {
 130                 gpio_export(irq_gpio, 0);
 131         } else {
 132                 pr_err("CM-T35: could not obtain gpio for SMSC911X IRQ\n");
 133                 return;
 134         }
 135
 136         platform_device_register(dev);
 137 }
 138
 139 static void __init cm_t35_init_ethernet(void)
 140 {
 141         cm_t35_init_smsc911x(&cm_t35_smsc911x_device,
 142                              CM_T35_SMSC911X_CS, CM_T35_SMSC911X_GPIO);
 143         cm_t35_init_smsc911x(&sb_t35_smsc911x_device,
 144                              SB_T35_SMSC911X_CS, SB_T35_SMSC911X_GPIO);
 145 }
 146 #else
 147 static inline void __init cm_t35_init_ethernet(void) { return; }
 148 #endif
 149
 150 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 151 #include <linux/leds.h>
 152
 153 static struct gpio_led cm_t35_leds[] = {
 154         [0] = {
 155                 .gpio                   = 186,
 156                 .name                   = "cm-t35:green",
 157                 .default_trigger        = "heartbeat",
 158                 .active_low             = 0,
 159         },
 160 };
 161
 162 static struct gpio_led_platform_data cm_t35_led_pdata = {
 163         .num_leds       = ARRAY_SIZE(cm_t35_leds),
 164         .leds           = cm_t35_leds,
 165 };
 166
 167 static struct platform_device cm_t35_led_device = {
 168         .name           = "leds-gpio",
 169         .id             = -1,
 170         .dev            = {
 171                 .platform_data  = &cm_t35_led_pdata,
 172         },
 173 };
 174
 175 static void __init cm_t35_init_led(void)
 176 {
 177         platform_device_register(&cm_t35_led_device);
 178 }
 179 #else
 180 static inline void cm_t35_init_led(void) {}
 181 #endif
 182
 183 #if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
 184 #include <linux/mtd/mtd.h>
 185 #include <linux/mtd/nand.h>
 186 #include <linux/mtd/partitions.h>
 187
 188 static struct mtd_partition cm_t35_nand_partitions[] = {
 189         {
 190                 .name           = "xloader",
 191                 .offset         = 0,                    /* Offset = 0x00000 */
 192                 .size           = 4 * NAND_BLOCK_SIZE,
 193                 .mask_flags     = MTD_WRITEABLE
 194         },
 195         {
 196                 .name           = "uboot",
 197                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 198                 .size           = 15 * NAND_BLOCK_SIZE,
 199         },
 200         {
 201                 .name           = "uboot environment",
 202                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 203                 .size           = 2 * NAND_BLOCK_SIZE,
 204         },
 205         {
 206                 .name           = "linux",
 207                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 208                 .size           = 32 * NAND_BLOCK_SIZE,
 209         },
 210         {
 211                 .name           = "rootfs",
 212                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 213                 .size           = MTDPART_SIZ_FULL,
 214         },
 215 };
 216
 217 static struct omap_nand_platform_data cm_t35_nand_data = {
 218         .parts                  = cm_t35_nand_partitions,
 219         .nr_parts               = ARRAY_SIZE(cm_t35_nand_partitions),
 220         .dma_channel            = -1,   /* disable DMA in OMAP NAND driver */
 221         .cs                     = 0,
 222         .gpmc_cs_baseaddr       = (void __iomem *)GPMC_CS0_BASE_ADDR,
 223         .gpmc_baseaddr          = (void __iomem *)OMAP34XX_GPMC_VIRT,
 224
 225 };
 226
 227 static struct resource cm_t35_nand_resource = {
 228         .flags          = IORESOURCE_MEM,
 229 };
 230
 231 static struct platform_device cm_t35_nand_device = {
 232         .name           = "omap2-nand",
 233         .id             = -1,
 234         .num_resources  = 1,
 235         .resource       = &cm_t35_nand_resource,
 236         .dev            = {
 237                 .platform_data  = &cm_t35_nand_data,
 238         },
 239 };
 240
 241 static void __init cm_t35_init_nand(void)
 242 {
 243         if (platform_device_register(&cm_t35_nand_device) < 0)
 244                 pr_err("CM-T35: Unable to register NAND device\n");
 245 }
 246 #else
 247 static inline void cm_t35_init_nand(void) {}
 248 #endif
 249
 250 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
 251         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 252 #include <linux/spi/spi.h>
 253 #include <linux/spi/ads7846.h>
 254
 255 #include <plat/mcspi.h>
 256
 257 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 258         .turbo_mode     = 0,
 259         .single_channel = 1,    /* 0: slave, 1: master */
 260 };
 261
 262 static int ads7846_get_pendown_state(void)
 263 {
 264         return !gpio_get_value(CM_T35_GPIO_PENDOWN);
 265 }
 266
 267 static struct ads7846_platform_data ads7846_config = {
 268         .x_max                  = 0x0fff,
 269         .y_max                  = 0x0fff,
 270         .x_plate_ohms           = 180,
 271         .pressure_max           = 255,
 272         .debounce_max           = 10,
 273         .debounce_tol           = 3,
 274         .debounce_rep           = 1,
 275         .get_pendown_state      = ads7846_get_pendown_state,
 276         .keep_vref_on           = 1,
 277 };
 278
 279 static struct spi_board_info cm_t35_spi_board_info[] __initdata = {
 280         {
 281                 .modalias               = "ads7846",
 282                 .bus_num                = 1,
 283                 .chip_select            = 0,
 284                 .max_speed_hz           = 1500000,
 285                 .controller_data        = &ads7846_mcspi_config,
 286                 .irq                    = OMAP_GPIO_IRQ(CM_T35_GPIO_PENDOWN),
 287                 .platform_data          = &ads7846_config,
 288         },
 289 };
 290
 291 static void __init cm_t35_init_ads7846(void)
 292 {
 293         if ((gpio_request(CM_T35_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
 294             (gpio_direction_input(CM_T35_GPIO_PENDOWN) == 0)) {
 295                 gpio_export(CM_T35_GPIO_PENDOWN, 0);
 296         } else {
 297                 pr_err("CM-T35: could not obtain gpio for ADS7846_PENDOWN\n");
 298                 return;
 299         }
 300
 301         spi_register_board_info(cm_t35_spi_board_info,
 302                                 ARRAY_SIZE(cm_t35_spi_board_info));
 303 }
 304 #else
 305 static inline void cm_t35_init_ads7846(void) {}
 306 #endif
 307
 308 static struct regulator_consumer_supply cm_t35_vmmc1_supply = {
 309         .supply                 = "vmmc",
 310 };
 311
 312 static struct regulator_consumer_supply cm_t35_vsim_supply = {
 313         .supply                 = "vmmc_aux",
 314 };
 315
 316 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 317 static struct regulator_init_data cm_t35_vmmc1 = {
 318         .constraints = {
 319                 .min_uV                 = 1850000,
 320                 .max_uV                 = 3150000,
 321                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 322                                         | REGULATOR_MODE_STANDBY,
 323                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 324                                         | REGULATOR_CHANGE_MODE
 325                                         | REGULATOR_CHANGE_STATUS,
 326         },
 327         .num_consumer_supplies  = 1,
 328         .consumer_supplies      = &cm_t35_vmmc1_supply,
 329 };
 330
 331 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 332 static struct regulator_init_data cm_t35_vsim = {
 333         .constraints = {
 334                 .min_uV                 = 1800000,
 335                 .max_uV                 = 3000000,
 336                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 337                                         | REGULATOR_MODE_STANDBY,
 338                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 339                                         | REGULATOR_CHANGE_MODE
 340                                         | REGULATOR_CHANGE_STATUS,
 341         },
 342         .num_consumer_supplies  = 1,
 343         .consumer_supplies      = &cm_t35_vsim_supply,
 344 };
 345
 346 static struct twl4030_usb_data cm_t35_usb_data = {
 347         .usb_mode       = T2_USB_MODE_ULPI,
 348 };
 349
 350 static int cm_t35_keymap[] = {
 351         KEY(0, 0, KEY_A),       KEY(0, 1, KEY_B),       KEY(0, 2, KEY_LEFT),
 352         KEY(1, 0, KEY_UP),      KEY(1, 1, KEY_ENTER),   KEY(1, 2, KEY_DOWN),
 353         KEY(2, 0, KEY_RIGHT),   KEY(2, 1, KEY_C),       KEY(2, 2, KEY_D),
 354 };
 355
 356 static struct matrix_keymap_data cm_t35_keymap_data = {
 357         .keymap                 = cm_t35_keymap,
 358         .keymap_size            = ARRAY_SIZE(cm_t35_keymap),
 359 };
 360
 361 static struct twl4030_keypad_data cm_t35_kp_data = {
 362         .keymap_data    = &cm_t35_keymap_data,
 363         .rows           = 3,
 364         .cols           = 3,
 365         .rep            = 1,
 366 };
 367
 368 static struct twl4030_hsmmc_info mmc[] = {
 369         {
 370                 .mmc            = 1,
 371                 .wires          = 4,
 372                 .gpio_cd        = -EINVAL,
 373                 .gpio_wp        = -EINVAL,
 374
 375         },
 376         {
 377                 .mmc            = 2,
 378                 .wires          = 4,
 379                 .transceiver    = 1,
 380                 .gpio_cd        = -EINVAL,
 381                 .gpio_wp        = -EINVAL,
 382                 .ocr_mask       = 0x00100000,   /* 3.3V */
 383         },
 384         {}      /* Terminator */
 385 };
 386
 387 static struct ehci_hcd_omap_platform_data ehci_pdata = {
 388         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 389         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 390         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 391
 392         .phy_reset  = true,
 393         .reset_gpio_port[0]  = -EINVAL,
 394         .reset_gpio_port[1]  = -EINVAL,
 395         .reset_gpio_port[2]  = -EINVAL
 396 };
 397
 398 static int cm_t35_twl_gpio_setup(struct device *dev, unsigned gpio,
 399                                  unsigned ngpio)
 400 {
 401         int wlan_rst = gpio + 2;
 402
 403         if ((gpio_request(wlan_rst, "WLAN RST") == 0) &&
 404             (gpio_direction_output(wlan_rst, 1) == 0)) {
 405                 gpio_export(wlan_rst, 0);
 406
 407                 udelay(10);
 408                 gpio_set_value(wlan_rst, 0);
 409                 udelay(10);
 410                 gpio_set_value(wlan_rst, 1);
 411         } else {
 412                 pr_err("CM-T35: could not obtain gpio for WiFi reset\n");
 413         }
 414
 415         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 416         mmc[0].gpio_cd = gpio + 0;
 417         twl4030_mmc_init(mmc);
 418
 419         /* link regulators to MMC adapters */
 420         cm_t35_vmmc1_supply.dev = mmc[0].dev;
 421         cm_t35_vsim_supply.dev = mmc[0].dev;
 422
 423         /* setup USB with proper PHY reset GPIOs */
 424         ehci_pdata.reset_gpio_port[0] = gpio + 6;
 425         ehci_pdata.reset_gpio_port[1] = gpio + 7;
 426
 427         usb_ehci_init(&ehci_pdata);
 428
 429         return 0;
 430 }
 431
 432 static struct twl4030_gpio_platform_data cm_t35_gpio_data = {
 433         .gpio_base      = OMAP_MAX_GPIO_LINES,
 434         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 435         .irq_end        = TWL4030_GPIO_IRQ_END,
 436         .setup          = cm_t35_twl_gpio_setup,
 437 };
 438
 439 static struct twl4030_platform_data cm_t35_twldata = {
 440         .irq_base       = TWL4030_IRQ_BASE,
 441         .irq_end        = TWL4030_IRQ_END,
 442
 443         /* platform_data for children goes here */
 444         .keypad         = &cm_t35_kp_data,
 445         .usb            = &cm_t35_usb_data,
 446         .gpio           = &cm_t35_gpio_data,
 447         .vmmc1          = &cm_t35_vmmc1,
 448         .vsim           = &cm_t35_vsim,
 449 };
 450
 451 static struct i2c_board_info __initdata cm_t35_i2c_boardinfo[] = {
 452         {
 453                 I2C_BOARD_INFO("tps65930", 0x48),
 454                 .flags          = I2C_CLIENT_WAKE,
 455                 .irq            = INT_34XX_SYS_NIRQ,
 456                 .platform_data  = &cm_t35_twldata,
 457         },
 458 };
 459
 460 static void __init cm_t35_init_i2c(void)
 461 {
 462         omap_register_i2c_bus(1, 2600, cm_t35_i2c_boardinfo,
 463                               ARRAY_SIZE(cm_t35_i2c_boardinfo));
 464 }
 465
 466 static struct omap_board_config_kernel cm_t35_config[] __initdata = {
 467 };
 468
 469 static void __init cm_t35_init_irq(void)
 470 {
 471         omap_board_config = cm_t35_config;
 472         omap_board_config_size = ARRAY_SIZE(cm_t35_config);
 473
 474         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 475                              mt46h32m32lf6_sdrc_params);
 476         omap_init_irq();
 477         omap_gpio_init();
 478 }
 479
 480 static void __init cm_t35_map_io(void)
 481 {
 482         omap2_set_globals_343x();
 483         omap2_map_common_io();
 484 }
 485
 486 #ifdef CONFIG_OMAP_MUX
 487 static struct omap_board_mux board_mux[] __initdata = {
 488         { .reg_offset = OMAP_MUX_TERMINATOR },
 489 };
 490 #else
 491 #define board_mux       NULL
 492 #endif
 493
 494 static void __init cm_t35_init(void)
 495 {
 496         omap3_mux_init(board_mux, OMAP_PACKAGE_CUS);
 497         omap_serial_init();
 498         cm_t35_init_i2c();
 499         cm_t35_init_nand();
 500         cm_t35_init_ads7846();
 501         cm_t35_init_ethernet();
 502         cm_t35_init_led();
 503
 504         usb_musb_init();
 505
 506         omap_mux_init_signal("sys_nirq",
 507                 OMAP_WAKEUP_EN | OMAP_PIN_INPUT_PULLUP);
 508 }
 509
 510 MACHINE_START(CM_T35, "Compulab CM-T35")
 511         .phys_io        = 0x48000000,
 512         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 513         .boot_params    = 0x80000100,
 514         .map_io         = cm_t35_map_io,
 515         .init_irq       = cm_t35_init_irq,
 516         .init_machine   = cm_t35_init,
 517         .timer          = &omap_timer,
 518 MACHINE_END