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