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/leds.h>
  24
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/ads7846.h>
  27 #include <linux/i2c/twl4030.h>
  28
  29 #include <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33
  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 #include <mach/keypad.h>
  40
  41 #include "sdram-micron-mt46h32m32lf-6.h"
  42 #include "mmc-twl4030.h"
  43
  44 #define OMAP3_EVM_TS_GPIO       175
  45
  46 #define OMAP3EVM_ETHR_START     0x2c000000
  47 #define OMAP3EVM_ETHR_SIZE      1024
  48 #define OMAP3EVM_ETHR_GPIO_IRQ  176
  49 #define OMAP3EVM_SMC911X_CS     5
  50
  51 static struct resource omap3evm_smc911x_resources[] = {
  52         [0] =   {
  53                 .start  = OMAP3EVM_ETHR_START,
  54                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  55                 .flags  = IORESOURCE_MEM,
  56         },
  57         [1] =   {
  58                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  59                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  60                 .flags  = IORESOURCE_IRQ,
  61         },
  62 };
  63
  64 static struct platform_device omap3evm_smc911x_device = {
  65         .name           = "smc911x",
  66         .id             = -1,
  67         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  68         .resource       = &omap3evm_smc911x_resources[0],
  69 };
  70
  71 static inline void __init omap3evm_init_smc911x(void)
  72 {
  73         int eth_cs;
  74         struct clk *l3ck;
  75         unsigned int rate;
  76
  77         eth_cs = OMAP3EVM_SMC911X_CS;
  78
  79         l3ck = clk_get(NULL, "l3_ck");
  80         if (IS_ERR(l3ck))
  81                 rate = 100000000;
  82         else
  83                 rate = clk_get_rate(l3ck);
  84
  85         if (gpio_request(OMAP3EVM_ETHR_GPIO_IRQ, "SMC911x irq") < 0) {
  86                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  87                         OMAP3EVM_ETHR_GPIO_IRQ);
  88                 return;
  89         }
  90
  91         gpio_direction_input(OMAP3EVM_ETHR_GPIO_IRQ);
  92 }
  93
  94 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  95         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  96 };
  97
  98 static struct twl4030_hsmmc_info mmc[] = {
  99         {
 100                 .mmc            = 1,
 101                 .wires          = 4,
 102                 .gpio_cd        = -EINVAL,
 103                 .gpio_wp        = 63,
 104         },
 105         {}      /* Terminator */
 106 };
 107
 108 static struct gpio_led gpio_leds[] = {
 109         {
 110                 .name                   = "omap3evm::ledb",
 111                 /* normally not visible (board underside) */
 112                 .default_trigger        = "default-on",
 113                 .gpio                   = -EINVAL,      /* gets replaced */
 114                 .active_low             = true,
 115         },
 116 };
 117
 118 static struct gpio_led_platform_data gpio_led_info = {
 119         .leds           = gpio_leds,
 120         .num_leds       = ARRAY_SIZE(gpio_leds),
 121 };
 122
 123 static struct platform_device leds_gpio = {
 124         .name   = "leds-gpio",
 125         .id     = -1,
 126         .dev    = {
 127                 .platform_data  = &gpio_led_info,
 128         },
 129 };
 130
 131
 132 static int omap3evm_twl_gpio_setup(struct device *dev,
 133                 unsigned gpio, unsigned ngpio)
 134 {
 135         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 136         omap_cfg_reg(L8_34XX_GPIO63);
 137         mmc[0].gpio_cd = gpio + 0;
 138         twl4030_mmc_init(mmc);
 139
 140         /*
 141          * Most GPIOs are for USB OTG.  Some are mostly sent to
 142          * the P2 connector; notably LEDA for the LCD backlight.
 143          */
 144
 145         /* TWL4030_GPIO_MAX + 1 == ledB (out, active low LED) */
 146         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 147
 148         platform_device_register(&leds_gpio);
 149
 150         return 0;
 151 }
 152
 153 static struct twl4030_gpio_platform_data omap3evm_gpio_data = {
 154         .gpio_base      = OMAP_MAX_GPIO_LINES,
 155         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 156         .irq_end        = TWL4030_GPIO_IRQ_END,
 157         .use_leds       = true,
 158         .setup          = omap3evm_twl_gpio_setup,
 159 };
 160
 161 static struct twl4030_usb_data omap3evm_usb_data = {
 162         .usb_mode       = T2_USB_MODE_ULPI,
 163 };
 164
 165 static int omap3evm_keymap[] = {
 166         KEY(0, 0, KEY_LEFT),
 167         KEY(0, 1, KEY_RIGHT),
 168         KEY(0, 2, KEY_A),
 169         KEY(0, 3, KEY_B),
 170         KEY(1, 0, KEY_DOWN),
 171         KEY(1, 1, KEY_UP),
 172         KEY(1, 2, KEY_E),
 173         KEY(1, 3, KEY_F),
 174         KEY(2, 0, KEY_ENTER),
 175         KEY(2, 1, KEY_I),
 176         KEY(2, 2, KEY_J),
 177         KEY(2, 3, KEY_K),
 178         KEY(3, 0, KEY_M),
 179         KEY(3, 1, KEY_N),
 180         KEY(3, 2, KEY_O),
 181         KEY(3, 3, KEY_P)
 182 };
 183
 184 static struct twl4030_keypad_data omap3evm_kp_data = {
 185         .rows           = 4,
 186         .cols           = 4,
 187         .keymap         = omap3evm_keymap,
 188         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 189         .rep            = 1,
 190 };
 191
 192 static struct twl4030_madc_platform_data omap3evm_madc_data = {
 193         .irq_line       = 1,
 194 };
 195
 196 static struct twl4030_platform_data omap3evm_twldata = {
 197         .irq_base       = TWL4030_IRQ_BASE,
 198         .irq_end        = TWL4030_IRQ_END,
 199
 200         /* platform_data for children goes here */
 201         .keypad         = &omap3evm_kp_data,
 202         .madc           = &omap3evm_madc_data,
 203         .usb            = &omap3evm_usb_data,
 204         .gpio           = &omap3evm_gpio_data,
 205 };
 206
 207 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
 208         {
 209                 I2C_BOARD_INFO("twl4030", 0x48),
 210                 .flags = I2C_CLIENT_WAKE,
 211                 .irq = INT_34XX_SYS_NIRQ,
 212                 .platform_data = &omap3evm_twldata,
 213         },
 214 };
 215
 216 static int __init omap3_evm_i2c_init(void)
 217 {
 218         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 219                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 220         omap_register_i2c_bus(2, 400, NULL, 0);
 221         omap_register_i2c_bus(3, 400, NULL, 0);
 222         return 0;
 223 }
 224
 225 static struct platform_device omap3_evm_lcd_device = {
 226         .name           = "omap3evm_lcd",
 227         .id             = -1,
 228 };
 229
 230 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 231         .ctrl_name      = "internal",
 232 };
 233
 234 static void ads7846_dev_init(void)
 235 {
 236         if (gpio_request(OMAP3_EVM_TS_GPIO, "ADS7846 pendown") < 0)
 237                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 238
 239         gpio_direction_input(OMAP3_EVM_TS_GPIO);
 240
 241         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 242         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 243 }
 244
 245 static int ads7846_get_pendown_state(void)
 246 {
 247         return !gpio_get_value(OMAP3_EVM_TS_GPIO);
 248 }
 249
 250 struct ads7846_platform_data ads7846_config = {
 251         .x_max                  = 0x0fff,
 252         .y_max                  = 0x0fff,
 253         .x_plate_ohms           = 180,
 254         .pressure_max           = 255,
 255         .debounce_max           = 10,
 256         .debounce_tol           = 3,
 257         .debounce_rep           = 1,
 258         .get_pendown_state      = ads7846_get_pendown_state,
 259         .keep_vref_on           = 1,
 260         .settle_delay_usecs     = 150,
 261 };
 262
 263 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 264         .turbo_mode     = 0,
 265         .single_channel = 1,    /* 0: slave, 1: master */
 266 };
 267
 268 struct spi_board_info omap3evm_spi_board_info[] = {
 269         [0] = {
 270                 .modalias               = "ads7846",
 271                 .bus_num                = 1,
 272                 .chip_select            = 0,
 273                 .max_speed_hz           = 1500000,
 274                 .controller_data        = &ads7846_mcspi_config,
 275                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 276                 .platform_data          = &ads7846_config,
 277         },
 278 };
 279
 280 static void __init omap3_evm_init_irq(void)
 281 {
 282         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 283         omap_init_irq();
 284         omap_gpio_init();
 285         omap3evm_init_smc911x();
 286 }
 287
 288 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 289         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 290         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 291 };
 292
 293 static struct platform_device *omap3_evm_devices[] __initdata = {
 294         &omap3_evm_lcd_device,
 295         &omap3evm_smc911x_device,
 296 };
 297
 298 static void __init omap3_evm_init(void)
 299 {
 300         omap3_evm_i2c_init();
 301
 302         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 303         omap_board_config = omap3_evm_config;
 304         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 305
 306         spi_register_board_info(omap3evm_spi_board_info,
 307                                 ARRAY_SIZE(omap3evm_spi_board_info));
 308
 309         omap_serial_init();
 310         usb_musb_init();
 311         ads7846_dev_init();
 312 }
 313
 314 static void __init omap3_evm_map_io(void)
 315 {
 316         omap2_set_globals_343x();
 317         omap2_map_common_io();
 318 }
 319
 320 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 321         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 322         .phys_io        = 0x48000000,
 323         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 324         .boot_params    = 0x80000100,
 325         .map_io         = omap3_evm_map_io,
 326         .init_irq       = omap3_evm_init_irq,
 327         .init_machine   = omap3_evm_init,
 328         .timer          = &omap_timer,
 329 MACHINE_END