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   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
  26 #include <linux/spi/spi.h>
  27 #include <linux/spi/ads7846.h>
  28 #include <linux/i2c/twl4030.h>
  29 #include <linux/usb/otg.h>
  30
  31 #include <linux/regulator/machine.h>
  32
  33 #include <mach/hardware.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37
  38 #include <plat/board.h>
  39 #include <plat/mux.h>
  40 #include <plat/usb.h>
  41 #include <plat/common.h>
  42 #include <plat/mcspi.h>
  43
  44 #include "sdram-micron-mt46h32m32lf-6.h"
  45 #include "mmc-twl4030.h"
  46
  47 #define OMAP3_EVM_TS_GPIO       175
  48 #define OMAP3_EVM_EHCI_VBUS     22
  49 #define OMAP3_EVM_EHCI_SELECT   61
  50
  51 #define OMAP3EVM_ETHR_START     0x2c000000
  52 #define OMAP3EVM_ETHR_SIZE      1024
  53 #define OMAP3EVM_ETHR_ID_REV    0x50
  54 #define OMAP3EVM_ETHR_GPIO_IRQ  176
  55 #define OMAP3EVM_SMC911X_CS     5
  56
  57 static u8 omap3_evm_version;
  58
  59 u8 get_omap3_evm_rev(void)
  60 {
  61         return omap3_evm_version;
  62 }
  63 EXPORT_SYMBOL(get_omap3_evm_rev);
  64
  65 static void __init omap3_evm_get_revision(void)
  66 {
  67         void __iomem *ioaddr;
  68         unsigned int smsc_id;
  69
  70         /* Ethernet PHY ID is stored at ID_REV register */
  71         ioaddr = ioremap_nocache(OMAP3EVM_ETHR_START, SZ_1K);
  72         if (!ioaddr)
  73                 return;
  74         smsc_id = readl(ioaddr + OMAP3EVM_ETHR_ID_REV) & 0xFFFF0000;
  75         iounmap(ioaddr);
  76
  77         switch (smsc_id) {
  78         /*SMSC9115 chipset*/
  79         case 0x01150000:
  80                 omap3_evm_version = OMAP3EVM_BOARD_GEN_1;
  81                 break;
  82         /*SMSC 9220 chipset*/
  83         case 0x92200000:
  84         default:
  85                 omap3_evm_version = OMAP3EVM_BOARD_GEN_2;
  86         }
  87 }
  88
  89 static struct resource omap3evm_smc911x_resources[] = {
  90         [0] =   {
  91                 .start  = OMAP3EVM_ETHR_START,
  92                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  93                 .flags  = IORESOURCE_MEM,
  94         },
  95         [1] =   {
  96                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  97                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  98                 .flags  = IORESOURCE_IRQ,
  99         },
 100 };
 101
 102 static struct platform_device omap3evm_smc911x_device = {
 103         .name           = "smc911x",
 104         .id             = -1,
 105         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
 106         .resource       = &omap3evm_smc911x_resources[0],
 107 };
 108
 109 static inline void __init omap3evm_init_smc911x(void)
 110 {
 111         int eth_cs;
 112         struct clk *l3ck;
 113         unsigned int rate;
 114
 115         eth_cs = OMAP3EVM_SMC911X_CS;
 116
 117         l3ck = clk_get(NULL, "l3_ck");
 118         if (IS_ERR(l3ck))
 119                 rate = 100000000;
 120         else
 121                 rate = clk_get_rate(l3ck);
 122
 123         if (gpio_request(OMAP3EVM_ETHR_GPIO_IRQ, "SMC911x irq") < 0) {
 124                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
 125                         OMAP3EVM_ETHR_GPIO_IRQ);
 126                 return;
 127         }
 128
 129         gpio_direction_input(OMAP3EVM_ETHR_GPIO_IRQ);
 130 }
 131
 132 static struct regulator_consumer_supply omap3evm_vmmc1_supply = {
 133         .supply                 = "vmmc",
 134 };
 135
 136 static struct regulator_consumer_supply omap3evm_vsim_supply = {
 137         .supply                 = "vmmc_aux",
 138 };
 139
 140 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 141 static struct regulator_init_data omap3evm_vmmc1 = {
 142         .constraints = {
 143                 .min_uV                 = 1850000,
 144                 .max_uV                 = 3150000,
 145                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 146                                         | REGULATOR_MODE_STANDBY,
 147                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 148                                         | REGULATOR_CHANGE_MODE
 149                                         | REGULATOR_CHANGE_STATUS,
 150         },
 151         .num_consumer_supplies  = 1,
 152         .consumer_supplies      = &omap3evm_vmmc1_supply,
 153 };
 154
 155 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 156 static struct regulator_init_data omap3evm_vsim = {
 157         .constraints = {
 158                 .min_uV                 = 1800000,
 159                 .max_uV                 = 3000000,
 160                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 161                                         | REGULATOR_MODE_STANDBY,
 162                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 163                                         | REGULATOR_CHANGE_MODE
 164                                         | REGULATOR_CHANGE_STATUS,
 165         },
 166         .num_consumer_supplies  = 1,
 167         .consumer_supplies      = &omap3evm_vsim_supply,
 168 };
 169
 170 static struct twl4030_hsmmc_info mmc[] = {
 171         {
 172                 .mmc            = 1,
 173                 .wires          = 4,
 174                 .gpio_cd        = -EINVAL,
 175                 .gpio_wp        = 63,
 176         },
 177         {}      /* Terminator */
 178 };
 179
 180 static struct gpio_led gpio_leds[] = {
 181         {
 182                 .name                   = "omap3evm::ledb",
 183                 /* normally not visible (board underside) */
 184                 .default_trigger        = "default-on",
 185                 .gpio                   = -EINVAL,      /* gets replaced */
 186                 .active_low             = true,
 187         },
 188 };
 189
 190 static struct gpio_led_platform_data gpio_led_info = {
 191         .leds           = gpio_leds,
 192         .num_leds       = ARRAY_SIZE(gpio_leds),
 193 };
 194
 195 static struct platform_device leds_gpio = {
 196         .name   = "leds-gpio",
 197         .id     = -1,
 198         .dev    = {
 199                 .platform_data  = &gpio_led_info,
 200         },
 201 };
 202
 203
 204 static int omap3evm_twl_gpio_setup(struct device *dev,
 205                 unsigned gpio, unsigned ngpio)
 206 {
 207         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 208         omap_cfg_reg(L8_34XX_GPIO63);
 209         mmc[0].gpio_cd = gpio + 0;
 210         twl4030_mmc_init(mmc);
 211
 212         /* link regulators to MMC adapters */
 213         omap3evm_vmmc1_supply.dev = mmc[0].dev;
 214         omap3evm_vsim_supply.dev = mmc[0].dev;
 215
 216         /*
 217          * Most GPIOs are for USB OTG.  Some are mostly sent to
 218          * the P2 connector; notably LEDA for the LCD backlight.
 219          */
 220
 221         /* TWL4030_GPIO_MAX + 1 == ledB (out, active low LED) */
 222         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 223
 224         platform_device_register(&leds_gpio);
 225
 226         return 0;
 227 }
 228
 229 static struct twl4030_gpio_platform_data omap3evm_gpio_data = {
 230         .gpio_base      = OMAP_MAX_GPIO_LINES,
 231         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 232         .irq_end        = TWL4030_GPIO_IRQ_END,
 233         .use_leds       = true,
 234         .setup          = omap3evm_twl_gpio_setup,
 235 };
 236
 237 static struct twl4030_usb_data omap3evm_usb_data = {
 238         .usb_mode       = T2_USB_MODE_ULPI,
 239 };
 240
 241 static int board_keymap[] = {
 242         KEY(0, 0, KEY_LEFT),
 243         KEY(0, 1, KEY_RIGHT),
 244         KEY(0, 2, KEY_A),
 245         KEY(0, 3, KEY_B),
 246         KEY(1, 0, KEY_DOWN),
 247         KEY(1, 1, KEY_UP),
 248         KEY(1, 2, KEY_E),
 249         KEY(1, 3, KEY_F),
 250         KEY(2, 0, KEY_ENTER),
 251         KEY(2, 1, KEY_I),
 252         KEY(2, 2, KEY_J),
 253         KEY(2, 3, KEY_K),
 254         KEY(3, 0, KEY_M),
 255         KEY(3, 1, KEY_N),
 256         KEY(3, 2, KEY_O),
 257         KEY(3, 3, KEY_P)
 258 };
 259
 260 static struct matrix_keymap_data board_map_data = {
 261         .keymap                 = board_keymap,
 262         .keymap_size            = ARRAY_SIZE(board_keymap),
 263 };
 264
 265 static struct twl4030_keypad_data omap3evm_kp_data = {
 266         .keymap_data    = &board_map_data,
 267         .rows           = 4,
 268         .cols           = 4,
 269         .rep            = 1,
 270 };
 271
 272 static struct twl4030_madc_platform_data omap3evm_madc_data = {
 273         .irq_line       = 1,
 274 };
 275
 276 static struct twl4030_codec_audio_data omap3evm_audio_data = {
 277         .audio_mclk = 26000000,
 278 };
 279
 280 static struct twl4030_codec_data omap3evm_codec_data = {
 281         .audio_mclk = 26000000,
 282         .audio = &omap3evm_audio_data,
 283 };
 284
 285 static struct twl4030_platform_data omap3evm_twldata = {
 286         .irq_base       = TWL4030_IRQ_BASE,
 287         .irq_end        = TWL4030_IRQ_END,
 288
 289         /* platform_data for children goes here */
 290         .keypad         = &omap3evm_kp_data,
 291         .madc           = &omap3evm_madc_data,
 292         .usb            = &omap3evm_usb_data,
 293         .gpio           = &omap3evm_gpio_data,
 294         .codec          = &omap3evm_codec_data,
 295 };
 296
 297 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
 298         {
 299                 I2C_BOARD_INFO("twl4030", 0x48),
 300                 .flags = I2C_CLIENT_WAKE,
 301                 .irq = INT_34XX_SYS_NIRQ,
 302                 .platform_data = &omap3evm_twldata,
 303         },
 304 };
 305
 306 static int __init omap3_evm_i2c_init(void)
 307 {
 308         /*
 309          * REVISIT: These entries can be set in omap3evm_twl_data
 310          * after a merge with MFD tree
 311          */
 312         omap3evm_twldata.vmmc1 = &omap3evm_vmmc1;
 313         omap3evm_twldata.vsim = &omap3evm_vsim;
 314
 315         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 316                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 317         omap_register_i2c_bus(2, 400, NULL, 0);
 318         omap_register_i2c_bus(3, 400, NULL, 0);
 319         return 0;
 320 }
 321
 322 static struct platform_device omap3_evm_lcd_device = {
 323         .name           = "omap3evm_lcd",
 324         .id             = -1,
 325 };
 326
 327 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 328         .ctrl_name      = "internal",
 329 };
 330
 331 static void ads7846_dev_init(void)
 332 {
 333         if (gpio_request(OMAP3_EVM_TS_GPIO, "ADS7846 pendown") < 0)
 334                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 335
 336         gpio_direction_input(OMAP3_EVM_TS_GPIO);
 337
 338         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 339         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 340 }
 341
 342 static int ads7846_get_pendown_state(void)
 343 {
 344         return !gpio_get_value(OMAP3_EVM_TS_GPIO);
 345 }
 346
 347 struct ads7846_platform_data ads7846_config = {
 348         .x_max                  = 0x0fff,
 349         .y_max                  = 0x0fff,
 350         .x_plate_ohms           = 180,
 351         .pressure_max           = 255,
 352         .debounce_max           = 10,
 353         .debounce_tol           = 3,
 354         .debounce_rep           = 1,
 355         .get_pendown_state      = ads7846_get_pendown_state,
 356         .keep_vref_on           = 1,
 357         .settle_delay_usecs     = 150,
 358 };
 359
 360 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 361         .turbo_mode     = 0,
 362         .single_channel = 1,    /* 0: slave, 1: master */
 363 };
 364
 365 struct spi_board_info omap3evm_spi_board_info[] = {
 366         [0] = {
 367                 .modalias               = "ads7846",
 368                 .bus_num                = 1,
 369                 .chip_select            = 0,
 370                 .max_speed_hz           = 1500000,
 371                 .controller_data        = &ads7846_mcspi_config,
 372                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 373                 .platform_data          = &ads7846_config,
 374         },
 375 };
 376
 377 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 378         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 379 };
 380
 381 static void __init omap3_evm_init_irq(void)
 382 {
 383         omap_board_config = omap3_evm_config;
 384         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 385         omap2_init_common_hw(mt46h32m32lf6_sdrc_params, NULL);
 386         omap_init_irq();
 387         omap_gpio_init();
 388         omap3evm_init_smc911x();
 389 }
 390
 391 static struct platform_device *omap3_evm_devices[] __initdata = {
 392         &omap3_evm_lcd_device,
 393         &omap3evm_smc911x_device,
 394 };
 395
 396 static struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 397
 398         .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 399         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 400         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 401
 402         .phy_reset  = true,
 403         /* PHY reset GPIO will be runtime programmed based on EVM version */
 404         .reset_gpio_port[0]  = -EINVAL,
 405         .reset_gpio_port[1]  = -EINVAL,
 406         .reset_gpio_port[2]  = -EINVAL
 407 };
 408
 409 static void __init omap3_evm_init(void)
 410 {
 411         omap3_evm_get_revision();
 412
 413         omap3_evm_i2c_init();
 414
 415         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 416
 417         spi_register_board_info(omap3evm_spi_board_info,
 418                                 ARRAY_SIZE(omap3evm_spi_board_info));
 419
 420         omap_serial_init();
 421 #ifdef CONFIG_NOP_USB_XCEIV
 422         /* OMAP3EVM uses ISP1504 phy and so register nop transceiver */
 423         usb_nop_xceiv_register();
 424 #endif
 425         if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2) {
 426                 /* enable EHCI VBUS using GPIO22 */
 427                 omap_cfg_reg(AF9_34XX_GPIO22);
 428                 gpio_request(OMAP3_EVM_EHCI_VBUS, "enable EHCI VBUS");
 429                 gpio_direction_output(OMAP3_EVM_EHCI_VBUS, 0);
 430                 gpio_set_value(OMAP3_EVM_EHCI_VBUS, 1);
 431
 432                 /* Select EHCI port on main board */
 433                 omap_cfg_reg(U3_34XX_GPIO61);
 434                 gpio_request(OMAP3_EVM_EHCI_SELECT, "select EHCI port");
 435                 gpio_direction_output(OMAP3_EVM_EHCI_SELECT, 0);
 436                 gpio_set_value(OMAP3_EVM_EHCI_SELECT, 0);
 437
 438                 /* setup EHCI phy reset config */
 439                 omap_cfg_reg(AH14_34XX_GPIO21);
 440                 ehci_pdata.reset_gpio_port[1] = 21;
 441
 442         } else {
 443                 /* setup EHCI phy reset on MDC */
 444                 omap_cfg_reg(AF4_34XX_GPIO135_OUT);
 445                 ehci_pdata.reset_gpio_port[1] = 135;
 446         }
 447         usb_musb_init();
 448         usb_ehci_init(&ehci_pdata);
 449         ads7846_dev_init();
 450 }
 451
 452 static void __init omap3_evm_map_io(void)
 453 {
 454         omap2_set_globals_343x();
 455         omap2_map_common_io();
 456 }
 457
 458 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 459         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 460         .phys_io        = 0x48000000,
 461         .io_pg_offst    = ((0xfa000000) >> 18) & 0xfffc,
 462         .boot_params    = 0x80000100,
 463         .map_io         = omap3_evm_map_io,
 464         .init_irq       = omap3_evm_init_irq,
 465         .init_machine   = omap3_evm_init,
 466         .timer          = &omap_timer,
 467 MACHINE_END