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