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