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