arch/arm/mach-omap2/board-omap3evm.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3evm.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-3430sdp.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/gpio.h>
  22 #include <linux/input.h>
  23 #include <linux/input/matrix_keypad.h>
  24 #include <linux/leds.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <linux/spi/spi.h>
  28 #include <linux/spi/ads7846.h>
  29 #include <linux/i2c/twl4030.h>
  30 #include <linux/usb/otg.h>
  31 #include <linux/smsc911x.h>
  32
  33 #include <linux/regulator/machine.h>
  34
  35 #include <mach/hardware.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39
  40 #include <plat/board.h>
  41 #include <plat/mux.h>
  42 #include <plat/usb.h>
  43 #include <plat/common.h>
  44 #include <plat/mcspi.h>
  45
  46 #include "mux.h"
  47 #include "sdram-micron-mt46h32m32lf-6.h"
  48 #include "mmc-twl4030.h"
  49
  50 #define OMAP3_EVM_TS_GPIO       175
  51 #define OMAP3_EVM_EHCI_VBUS     22
  52 #define OMAP3_EVM_EHCI_SELECT   61
  53
  54 #define OMAP3EVM_ETHR_START     0x2c000000
  55 #define OMAP3EVM_ETHR_SIZE      1024
  56 #define OMAP3EVM_ETHR_ID_REV    0x50
  57 #define OMAP3EVM_ETHR_GPIO_IRQ  176
  58 #define OMAP3EVM_SMSC911X_CS    5
  59
  60 static u8 omap3_evm_version;
  61
  62 u8 get_omap3_evm_rev(void)
  63 {
  64         return omap3_evm_version;
  65 }
  66 EXPORT_SYMBOL(get_omap3_evm_rev);
  67
  68 static void __init omap3_evm_get_revision(void)
  69 {
  70         void __iomem *ioaddr;
  71         unsigned int smsc_id;
  72
  73         /* Ethernet PHY ID is stored at ID_REV register */
  74         ioaddr = ioremap_nocache(OMAP3EVM_ETHR_START, SZ_1K);
  75         if (!ioaddr)
  76                 return;
  77         smsc_id = readl(ioaddr + OMAP3EVM_ETHR_ID_REV) & 0xFFFF0000;
  78         iounmap(ioaddr);
  79
  80         switch (smsc_id) {
  81         /*SMSC9115 chipset*/
  82         case 0x01150000:
  83                 omap3_evm_version = OMAP3EVM_BOARD_GEN_1;
  84                 break;
  85         /*SMSC 9220 chipset*/
  86         case 0x92200000:
  87         default:
  88                 omap3_evm_version = OMAP3EVM_BOARD_GEN_2;
  89         }
  90 }
  91
  92 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
  93 static struct resource omap3evm_smsc911x_resources[] = {
  94         [0] =   {
  95                 .start  = OMAP3EVM_ETHR_START,
  96                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  97                 .flags  = IORESOURCE_MEM,
  98         },
  99         [1] =   {
 100                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
 101                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
 102                 .flags  = (IORESOURCE_IRQ | IRQF_TRIGGER_LOW),
 103         },
 104 };
 105
 106 static struct smsc911x_platform_config smsc911x_config = {
 107         .phy_interface  = PHY_INTERFACE_MODE_MII,
 108         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 109         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
 110         .flags          = (SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS),
 111 };
 112
 113 static struct platform_device omap3evm_smsc911x_device = {
 114         .name           = "smsc911x",
 115         .id             = -1,
 116         .num_resources  = ARRAY_SIZE(omap3evm_smsc911x_resources),
 117         .resource       = &omap3evm_smsc911x_resources[0],
 118         .dev            = {
 119                 .platform_data = &smsc911x_config,
 120         },
 121 };
 122
 123 static inline void __init omap3evm_init_smsc911x(void)
 124 {
 125         int eth_cs;
 126         struct clk *l3ck;
 127         unsigned int rate;
 128
 129         eth_cs = OMAP3EVM_SMSC911X_CS;
 130
 131         l3ck = clk_get(NULL, "l3_ck");
 132         if (IS_ERR(l3ck))
 133                 rate = 100000000;
 134         else
 135                 rate = clk_get_rate(l3ck);
 136
 137         if (gpio_request(OMAP3EVM_ETHR_GPIO_IRQ, "SMSC911x irq") < 0) {
 138                 printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
 139                         OMAP3EVM_ETHR_GPIO_IRQ);
 140                 return;
 141         }
 142
 143         gpio_direction_input(OMAP3EVM_ETHR_GPIO_IRQ);
 144         platform_device_register(&omap3evm_smsc911x_device);
 145 }
 146
 147 #else
 148 static inline void __init omap3evm_init_smsc911x(void) { return; }
 149 #endif
 150
 151 static struct regulator_consumer_supply omap3evm_vmmc1_supply = {
 152         .supply                 = "vmmc",
 153 };
 154
 155 static struct regulator_consumer_supply omap3evm_vsim_supply = {
 156         .supply                 = "vmmc_aux",
 157 };
 158
 159 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 160 static struct regulator_init_data omap3evm_vmmc1 = {
 161         .constraints = {
 162                 .min_uV                 = 1850000,
 163                 .max_uV                 = 3150000,
 164                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 165                                         | REGULATOR_MODE_STANDBY,
 166                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 167                                         | REGULATOR_CHANGE_MODE
 168                                         | REGULATOR_CHANGE_STATUS,
 169         },
 170         .num_consumer_supplies  = 1,
 171         .consumer_supplies      = &omap3evm_vmmc1_supply,
 172 };
 173
 174 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 175 static struct regulator_init_data omap3evm_vsim = {
 176         .constraints = {
 177                 .min_uV                 = 1800000,
 178                 .max_uV                 = 3000000,
 179                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 180                                         | REGULATOR_MODE_STANDBY,
 181                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 182                                         | REGULATOR_CHANGE_MODE
 183                                         | REGULATOR_CHANGE_STATUS,
 184         },
 185         .num_consumer_supplies  = 1,
 186         .consumer_supplies      = &omap3evm_vsim_supply,
 187 };
 188
 189 static struct twl4030_hsmmc_info mmc[] = {
 190         {
 191                 .mmc            = 1,
 192                 .wires          = 4,
 193                 .gpio_cd        = -EINVAL,
 194                 .gpio_wp        = 63,
 195         },
 196         {}      /* Terminator */
 197 };
 198
 199 static struct gpio_led gpio_leds[] = {
 200         {
 201                 .name                   = "omap3evm::ledb",
 202                 /* normally not visible (board underside) */
 203                 .default_trigger        = "default-on",
 204                 .gpio                   = -EINVAL,      /* gets replaced */
 205                 .active_low             = true,
 206         },
 207 };
 208
 209 static struct gpio_led_platform_data gpio_led_info = {
 210         .leds           = gpio_leds,
 211         .num_leds       = ARRAY_SIZE(gpio_leds),
 212 };
 213
 214 static struct platform_device leds_gpio = {
 215         .name   = "leds-gpio",
 216         .id     = -1,
 217         .dev    = {
 218                 .platform_data  = &gpio_led_info,
 219         },
 220 };
 221
 222
 223 static int omap3evm_twl_gpio_setup(struct device *dev,
 224                 unsigned gpio, unsigned ngpio)
 225 {
 226         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 227         omap_mux_init_gpio(63, OMAP_PIN_INPUT);
 228         mmc[0].gpio_cd = gpio + 0;
 229         twl4030_mmc_init(mmc);
 230
 231         /* link regulators to MMC adapters */
 232         omap3evm_vmmc1_supply.dev = mmc[0].dev;
 233         omap3evm_vsim_supply.dev = mmc[0].dev;
 234
 235         /*
 236          * Most GPIOs are for USB OTG.  Some are mostly sent to
 237          * the P2 connector; notably LEDA for the LCD backlight.
 238          */
 239
 240         /* TWL4030_GPIO_MAX + 1 == ledB (out, active low LED) */
 241         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 242
 243         platform_device_register(&leds_gpio);
 244
 245         return 0;
 246 }
 247
 248 static struct twl4030_gpio_platform_data omap3evm_gpio_data = {
 249         .gpio_base      = OMAP_MAX_GPIO_LINES,
 250         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 251         .irq_end        = TWL4030_GPIO_IRQ_END,
 252         .use_leds       = true,
 253         .setup          = omap3evm_twl_gpio_setup,
 254 };
 255
 256 static struct twl4030_usb_data omap3evm_usb_data = {
 257         .usb_mode       = T2_USB_MODE_ULPI,
 258 };
 259
 260 static int board_keymap[] = {
 261         KEY(0, 0, KEY_LEFT),
 262         KEY(0, 1, KEY_RIGHT),
 263         KEY(0, 2, KEY_A),
 264         KEY(0, 3, KEY_B),
 265         KEY(1, 0, KEY_DOWN),
 266         KEY(1, 1, KEY_UP),
 267         KEY(1, 2, KEY_E),
 268         KEY(1, 3, KEY_F),
 269         KEY(2, 0, KEY_ENTER),
 270         KEY(2, 1, KEY_I),
 271         KEY(2, 2, KEY_J),
 272         KEY(2, 3, KEY_K),
 273         KEY(3, 0, KEY_M),
 274         KEY(3, 1, KEY_N),
 275         KEY(3, 2, KEY_O),
 276         KEY(3, 3, KEY_P)
 277 };
 278
 279 static struct matrix_keymap_data board_map_data = {
 280         .keymap                 = board_keymap,
 281         .keymap_size            = ARRAY_SIZE(board_keymap),
 282 };
 283
 284 static struct twl4030_keypad_data omap3evm_kp_data = {
 285         .keymap_data    = &board_map_data,
 286         .rows           = 4,
 287         .cols           = 4,
 288         .rep            = 1,
 289 };
 290
 291 static struct twl4030_madc_platform_data omap3evm_madc_data = {
 292         .irq_line       = 1,
 293 };
 294
 295 static struct twl4030_codec_audio_data omap3evm_audio_data = {
 296         .audio_mclk = 26000000,
 297 };
 298
 299 static struct twl4030_codec_data omap3evm_codec_data = {
 300         .audio_mclk = 26000000,
 301         .audio = &omap3evm_audio_data,
 302 };
 303
 304 static struct twl4030_platform_data omap3evm_twldata = {
 305         .irq_base       = TWL4030_IRQ_BASE,
 306         .irq_end        = TWL4030_IRQ_END,
 307
 308         /* platform_data for children goes here */
 309         .keypad         = &omap3evm_kp_data,
 310         .madc           = &omap3evm_madc_data,
 311         .usb            = &omap3evm_usb_data,
 312         .gpio           = &omap3evm_gpio_data,
 313         .codec          = &omap3evm_codec_data,
 314 };
 315
 316 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
 317         {
 318                 I2C_BOARD_INFO("twl4030", 0x48),
 319                 .flags = I2C_CLIENT_WAKE,
 320                 .irq = INT_34XX_SYS_NIRQ,
 321                 .platform_data = &omap3evm_twldata,
 322         },
 323 };
 324
 325 static int __init omap3_evm_i2c_init(void)
 326 {
 327         /*
 328          * REVISIT: These entries can be set in omap3evm_twl_data
 329          * after a merge with MFD tree
 330          */
 331         omap3evm_twldata.vmmc1 = &omap3evm_vmmc1;
 332         omap3evm_twldata.vsim = &omap3evm_vsim;
 333
 334         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 335                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 336         omap_register_i2c_bus(2, 400, NULL, 0);
 337         omap_register_i2c_bus(3, 400, NULL, 0);
 338         return 0;
 339 }
 340
 341 static struct platform_device omap3_evm_lcd_device = {
 342         .name           = "omap3evm_lcd",
 343         .id             = -1,
 344 };
 345
 346 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 347         .ctrl_name      = "internal",
 348 };
 349
 350 static void ads7846_dev_init(void)
 351 {
 352         if (gpio_request(OMAP3_EVM_TS_GPIO, "ADS7846 pendown") < 0)
 353                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 354
 355         gpio_direction_input(OMAP3_EVM_TS_GPIO);
 356
 357         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 358         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 359 }
 360
 361 static int ads7846_get_pendown_state(void)
 362 {
 363         return !gpio_get_value(OMAP3_EVM_TS_GPIO);
 364 }
 365
 366 struct ads7846_platform_data ads7846_config = {
 367         .x_max                  = 0x0fff,
 368         .y_max                  = 0x0fff,
 369         .x_plate_ohms           = 180,
 370         .pressure_max           = 255,
 371         .debounce_max           = 10,
 372         .debounce_tol           = 3,
 373         .debounce_rep           = 1,
 374         .get_pendown_state      = ads7846_get_pendown_state,
 375         .keep_vref_on           = 1,
 376         .settle_delay_usecs     = 150,
 377 };
 378
 379 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 380         .turbo_mode     = 0,
 381         .single_channel = 1,    /* 0: slave, 1: master */
 382 };
 383
 384 struct spi_board_info omap3evm_spi_board_info[] = {
 385         [0] = {
 386                 .modalias               = "ads7846",
 387                 .bus_num                = 1,
 388                 .chip_select            = 0,
 389                 .max_speed_hz           = 1500000,
 390                 .controller_data        = &ads7846_mcspi_config,
 391                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 392                 .platform_data          = &ads7846_config,
 393         },
 394 };
 395
 396 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 397         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 398 };
 399
 400 static void __init omap3_evm_init_irq(void)
 401 {
 402         omap_board_config = omap3_evm_config;
 403         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 404         omap2_init_common_hw(mt46h32m32lf6_sdrc_params, NULL);
 405         omap_init_irq();
 406         omap_gpio_init();
 407 }
 408
 409 static struct platform_device *omap3_evm_devices[] __initdata = {
 410         &omap3_evm_lcd_device,
 411 };
 412
 413 static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 414
 415         .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 416         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 417         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 418
 419         .phy_reset  = true,
 420         /* PHY reset GPIO will be runtime programmed based on EVM version */
 421         .reset_gpio_port[0]  = -EINVAL,
 422         .reset_gpio_port[1]  = -EINVAL,
 423         .reset_gpio_port[2]  = -EINVAL
 424 };
 425
 426 #ifdef CONFIG_OMAP_MUX
 427 static struct omap_board_mux board_mux[] __initdata = {
 428         { .reg_offset = OMAP_MUX_TERMINATOR },
 429 };
 430 #else
 431 #define board_mux       NULL
 432 #endif
 433
 434 static void __init omap3_evm_init(void)
 435 {
 436         omap3_evm_get_revision();
 437         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 438
 439         omap3_evm_i2c_init();
 440
 441         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 442
 443         spi_register_board_info(omap3evm_spi_board_info,
 444                                 ARRAY_SIZE(omap3evm_spi_board_info));
 445
 446         omap_serial_init();
 447 #ifdef CONFIG_NOP_USB_XCEIV
 448         /* OMAP3EVM uses ISP1504 phy and so register nop transceiver */
 449         usb_nop_xceiv_register();
 450 #endif
 451         if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2) {
 452                 /* enable EHCI VBUS using GPIO22 */
 453                 omap_mux_init_gpio(22, OMAP_PIN_INPUT_PULLUP);
 454                 gpio_request(OMAP3_EVM_EHCI_VBUS, "enable EHCI VBUS");
 455                 gpio_direction_output(OMAP3_EVM_EHCI_VBUS, 0);
 456                 gpio_set_value(OMAP3_EVM_EHCI_VBUS, 1);
 457
 458                 /* Select EHCI port on main board */
 459                 omap_mux_init_gpio(61, OMAP_PIN_INPUT_PULLUP);
 460                 gpio_request(OMAP3_EVM_EHCI_SELECT, "select EHCI port");
 461                 gpio_direction_output(OMAP3_EVM_EHCI_SELECT, 0);
 462                 gpio_set_value(OMAP3_EVM_EHCI_SELECT, 0);
 463
 464                 /* setup EHCI phy reset config */
 465                 omap_mux_init_gpio(21, OMAP_PIN_INPUT_PULLUP);
 466                 ehci_pdata.reset_gpio_port[1] = 21;
 467
 468         } else {
 469                 /* setup EHCI phy reset on MDC */
 470                 omap_mux_init_gpio(135, OMAP_PIN_OUTPUT);
 471                 ehci_pdata.reset_gpio_port[1] = 135;
 472         }
 473         usb_musb_init();
 474         usb_ehci_init(&ehci_pdata);
 475         ads7846_dev_init();
 476         omap3evm_init_smsc911x();
 477 }
 478
 479 static void __init omap3_evm_map_io(void)
 480 {
 481         omap2_set_globals_343x();
 482         omap2_map_common_io();
 483 }
 484
 485 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 486         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 487         .phys_io        = 0x48000000,
 488         .io_pg_offst    = ((0xfa000000) >> 18) & 0xfffc,
 489         .boot_params    = 0x80000100,
 490         .map_io         = omap3_evm_map_io,
 491         .init_irq       = omap3_evm_init_irq,
 492         .init_machine   = omap3_evm_init,
 493         .timer          = &omap_timer,
 494 MACHINE_END