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/input.h>
  22 #include <linux/leds.h>
  23
  24 #include <linux/spi/spi.h>
  25 #include <linux/spi/ads7846.h>
  26 #include <linux/i2c/twl4030.h>
  27
  28 #include <mach/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32
  33 #include <mach/gpio.h>
  34 #include <mach/board.h>
  35 #include <mach/mux.h>
  36 #include <mach/usb.h>
  37 #include <mach/common.h>
  38 #include <mach/mcspi.h>
  39
  40 #include "sdram-micron-mt46h32m32lf-6.h"
  41 #include "twl4030-generic-scripts.h"
  42 #include "mmc-twl4030.h"
  43
  44
  45 static struct resource omap3evm_smc911x_resources[] = {
  46         [0] =   {
  47                 .start  = OMAP3EVM_ETHR_START,
  48                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  49                 .flags  = IORESOURCE_MEM,
  50         },
  51         [1] =   {
  52                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  53                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  54                 .flags  = IORESOURCE_IRQ,
  55         },
  56 };
  57
  58 static struct platform_device omap3evm_smc911x_device = {
  59         .name           = "smc911x",
  60         .id             = -1,
  61         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  62         .resource       = &omap3evm_smc911x_resources [0],
  63 };
  64
  65 static inline void __init omap3evm_init_smc911x(void)
  66 {
  67         int eth_cs;
  68         struct clk *l3ck;
  69         unsigned int rate;
  70
  71         eth_cs = OMAP3EVM_SMC911X_CS;
  72
  73         l3ck = clk_get(NULL, "l3_ck");
  74         if (IS_ERR(l3ck))
  75                 rate = 100000000;
  76         else
  77                 rate = clk_get_rate(l3ck);
  78
  79         if (gpio_request(OMAP3EVM_ETHR_GPIO_IRQ, "SMC911x irq") < 0) {
  80                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  81                         OMAP3EVM_ETHR_GPIO_IRQ);
  82                 return;
  83         }
  84
  85         gpio_direction_input(OMAP3EVM_ETHR_GPIO_IRQ);
  86 }
  87
  88 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  89         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  90 };
  91
  92 static struct twl4030_hsmmc_info mmc[] = {
  93         {
  94                 .mmc            = 1,
  95                 .wires          = 4,
  96                 .gpio_cd        = -EINVAL,
  97                 .gpio_wp        = 63,
  98         },
  99         {}      /* Terminator */
 100 };
 101
 102 static struct gpio_led gpio_leds[] = {
 103         {
 104                 .name                   = "omap3evm::ledb",
 105                 /* normally not visible (board underside) */
 106                 .default_trigger        = "default-on",
 107                 .gpio                   = -EINVAL,      /* gets replaced */
 108                 .active_low             = true,
 109         },
 110 };
 111
 112 static struct gpio_led_platform_data gpio_led_info = {
 113         .leds           = gpio_leds,
 114         .num_leds       = ARRAY_SIZE(gpio_leds),
 115 };
 116
 117 static struct platform_device leds_gpio = {
 118         .name   = "leds-gpio",
 119         .id     = -1,
 120         .dev    = {
 121                 .platform_data  = &gpio_led_info,
 122         },
 123 };
 124
 125
 126 static int omap3evm_twl_gpio_setup(struct device *dev,
 127                 unsigned gpio, unsigned ngpio)
 128 {
 129         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 130         omap_cfg_reg(L8_34XX_GPIO63);
 131         mmc[0].gpio_cd = gpio + 0;
 132         twl4030_mmc_init(mmc);
 133
 134         /* Most GPIOs are for USB OTG.  Some are mostly sent to
 135          * the P2 connector; notably LEDA for the LCD backlight.
 136          */
 137
 138         /* TWL4030_GPIO_MAX + 1 == ledB (out, active low LED) */
 139         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 140
 141         platform_device_register(&leds_gpio);
 142
 143         return 0;
 144 }
 145
 146 static struct twl4030_gpio_platform_data omap3evm_gpio_data = {
 147         .gpio_base      = OMAP_MAX_GPIO_LINES,
 148         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 149         .irq_end        = TWL4030_GPIO_IRQ_END,
 150         .use_leds       = true,
 151         .setup          = omap3evm_twl_gpio_setup,
 152 };
 153
 154 static struct twl4030_usb_data omap3evm_usb_data = {
 155         .usb_mode       = T2_USB_MODE_ULPI,
 156 };
 157
 158 static int omap3evm_keymap[] = {
 159         KEY(0, 0, KEY_LEFT),
 160         KEY(0, 1, KEY_RIGHT),
 161         KEY(0, 2, KEY_A),
 162         KEY(0, 3, KEY_B),
 163         KEY(1, 0, KEY_DOWN),
 164         KEY(1, 1, KEY_UP),
 165         KEY(1, 2, KEY_E),
 166         KEY(1, 3, KEY_F),
 167         KEY(2, 0, KEY_ENTER),
 168         KEY(2, 1, KEY_I),
 169         KEY(2, 2, KEY_J),
 170         KEY(2, 3, KEY_K),
 171         KEY(3, 0, KEY_M),
 172         KEY(3, 1, KEY_N),
 173         KEY(3, 2, KEY_O),
 174         KEY(3, 3, KEY_P)
 175 };
 176
 177 static struct twl4030_keypad_data omap3evm_kp_data = {
 178         .rows           = 4,
 179         .cols           = 4,
 180         .keymap         = omap3evm_keymap,
 181         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 182         .rep            = 1,
 183 };
 184
 185 static struct twl4030_madc_platform_data omap3evm_madc_data = {
 186         .irq_line       = 1,
 187 };
 188
 189 static struct twl4030_platform_data omap3evm_twldata = {
 190         .irq_base       = TWL4030_IRQ_BASE,
 191         .irq_end        = TWL4030_IRQ_END,
 192
 193         /* platform_data for children goes here */
 194         .keypad         = &omap3evm_kp_data,
 195         .madc           = &omap3evm_madc_data,
 196         .usb            = &omap3evm_usb_data,
 197         .power          = GENERIC3430_T2SCRIPTS_DATA,
 198         .gpio           = &omap3evm_gpio_data,
 199 };
 200
 201 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
 202         {
 203                 I2C_BOARD_INFO("twl4030", 0x48),
 204                 .flags = I2C_CLIENT_WAKE,
 205                 .irq = INT_34XX_SYS_NIRQ,
 206                 .platform_data = &omap3evm_twldata,
 207         },
 208 };
 209
 210 static int __init omap3_evm_i2c_init(void)
 211 {
 212         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 213                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 214         omap_register_i2c_bus(2, 400, NULL, 0);
 215         omap_register_i2c_bus(3, 400, NULL, 0);
 216         return 0;
 217 }
 218
 219 static struct platform_device omap3_evm_lcd_device = {
 220         .name           = "omap3evm_lcd",
 221         .id             = -1,
 222 };
 223
 224 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 225         .ctrl_name      = "internal",
 226 };
 227
 228 static void ads7846_dev_init(void)
 229 {
 230         if (gpio_request(OMAP3_EVM_TS_GPIO, "ADS7846 pendown") < 0)
 231                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 232
 233         gpio_direction_input(OMAP3_EVM_TS_GPIO);
 234
 235         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 236         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 237 }
 238
 239 static int ads7846_get_pendown_state(void)
 240 {
 241         return !gpio_get_value(OMAP3_EVM_TS_GPIO);
 242 }
 243
 244 struct ads7846_platform_data ads7846_config = {
 245         .x_max                  = 0x0fff,
 246         .y_max                  = 0x0fff,
 247         .x_plate_ohms           = 180,
 248         .pressure_max           = 255,
 249         .debounce_max           = 10,
 250         .debounce_tol           = 3,
 251         .debounce_rep           = 1,
 252         .get_pendown_state      = ads7846_get_pendown_state,
 253         .keep_vref_on           = 1,
 254         .settle_delay_usecs     = 150,
 255 };
 256
 257 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 258         .turbo_mode     = 0,
 259         .single_channel = 1,  /* 0: slave, 1: master */
 260 };
 261
 262 struct spi_board_info omap3evm_spi_board_info[] = {
 263         [0] = {
 264                 .modalias               = "ads7846",
 265                 .bus_num                = 1,
 266                 .chip_select            = 0,
 267                 .max_speed_hz           = 1500000,
 268                 .controller_data        = &ads7846_mcspi_config,
 269                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 270                 .platform_data          = &ads7846_config,
 271         },
 272 };
 273
 274 static void __init omap3_evm_init_irq(void)
 275 {
 276         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 277         omap_init_irq();
 278         omap_gpio_init();
 279         omap3evm_init_smc911x();
 280 }
 281
 282 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 283         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 284         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 285 };
 286
 287 static struct platform_device *omap3_evm_devices[] __initdata = {
 288         &omap3_evm_lcd_device,
 289         &omap3evm_smc911x_device,
 290 };
 291
 292 static void __init omap3_evm_init(void)
 293 {
 294         omap3_evm_i2c_init();
 295
 296         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 297         omap_board_config = omap3_evm_config;
 298         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 299
 300         spi_register_board_info(omap3evm_spi_board_info,
 301                                 ARRAY_SIZE(omap3evm_spi_board_info));
 302
 303         omap_serial_init();
 304         usb_musb_init();
 305         usb_ehci_init();
 306         omap3evm_flash_init();
 307         ads7846_dev_init();
 308 }
 309
 310 static void __init omap3_evm_map_io(void)
 311 {
 312         omap2_set_globals_343x();
 313         omap2_map_common_io();
 314 }
 315
 316 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 317         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 318         .phys_io        = 0x48000000,
 319         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 320         .boot_params    = 0x80000100,
 321         .map_io         = omap3_evm_map_io,
 322         .init_irq       = omap3_evm_init_irq,
 323         .init_machine   = omap3_evm_init,
 324         .timer          = &omap_timer,
 325 MACHINE_END