arch/arm/mach-omap2/board-omap2evm.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap2evm.c
   3  *
   4  * Copyright (C) 2008 Mistral Solutions Pvt Ltd
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/delay.h>
  17 #include <linux/err.h>
  18 #include <linux/clk.h>
  19 #include <linux/io.h>
  20 #include <linux/input.h>
  21 #include <linux/i2c/twl4030.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/mtd/nand.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/ads7846.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 #include <asm/mach/flash.h>
  33
  34 #include <mach/gpio.h>
  35 #include <mach/board.h>
  36 #include <mach/common.h>
  37 #include <mach/mmc.h>
  38 #include <mach/keypad.h>
  39 #include <mach/gpmc.h>
  40 #include <mach/nand.h>
  41 #include <mach/mcspi.h>
  42 #include <mach/mux.h>
  43
  44 #include "mmc-twl4030.h"
  45
  46
  47 #define GPMC_OFF_CONFIG1_0 0x60
  48
  49 static struct mtd_partition omap2evm_nand_partitions[] = {
  50         {
  51                 .name           = "X-Loader",
  52                 .offset         = 0,
  53                 .size           = 1 * (64 * 2048),
  54                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  55         },
  56         {
  57                 .name           = "U-Boot",
  58                 .offset         = MTDPART_OFS_APPEND,
  59                 .size           = 3 * (64 * 2048),
  60                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  61         },
  62         {
  63                 .name           = "U-Boot Environment",
  64                 .offset         = MTDPART_OFS_APPEND,
  65                 .size           = 1 * (64 * 2048),
  66          },
  67         {
  68                 .name           = "Kernel",
  69                 .offset         = MTDPART_OFS_APPEND,
  70                 .size           = 16 * (64 * 2048),     /* 2MB */
  71         },
  72         {
  73                 .name           = "Ramdisk",
  74                 .offset         = MTDPART_OFS_APPEND,
  75                 .size           = 32 * (64 * 2048),     /* 4MB */
  76         },
  77         {
  78                 .name           = "Filesystem",
  79                 .offset         = MTDPART_OFS_APPEND,
  80                 .size           = MTDPART_SIZ_FULL,
  81         }
  82 };
  83
  84 static struct omap_nand_platform_data omap2evm_nand_data = {
  85         .parts          = omap2evm_nand_partitions,
  86         .nr_parts       = ARRAY_SIZE(omap2evm_nand_partitions),
  87         .dma_channel    = -1,   /* disable DMA in OMAP NAND driver */
  88 };
  89
  90 static struct resource omap2evm_nand_resource = {
  91         .flags          = IORESOURCE_MEM,
  92 };
  93
  94 static struct platform_device omap2evm_nand_device = {
  95         .name           = "omap2-nand",
  96         .id             = -1,
  97         .dev            = {
  98                 .platform_data  = &omap2evm_nand_data,
  99         },
 100         .num_resources  = 1,
 101         .resource       = &omap2evm_nand_resource,
 102 };
 103
 104 void __init omap2evm_flash_init(void)
 105 {
 106         void __iomem *gpmc_base_add, *gpmc_cs_base_add;
 107         unsigned char cs = 0;
 108
 109         gpmc_base_add = (__force void __iomem *)OMAP243X_GPMC_VIRT;
 110         while (cs < GPMC_CS_NUM) {
 111                 int ret = 0;
 112
 113                 /* Each GPMC set for a single CS is at offset 0x30 */
 114                 gpmc_cs_base_add = (gpmc_base_add + GPMC_OFF_CONFIG1_0 +
 115                                     (cs * 0x30));
 116
 117                 /* xloader/Uboot would have programmed the NAND
 118                  * base address for us This is a ugly hack. The proper
 119                  * way of doing this is to pass the setup of u-boot up
 120                  * to kernel using kernel params - something on the
 121                  * lines of machineID. Check if Nand is
 122                  * configured */
 123                 ret = __raw_readl(gpmc_cs_base_add + GPMC_CS_CONFIG1);
 124                 if ((ret & 0xC00) == (0x800)) {
 125                         /* Found it!! */
 126                         printk(KERN_INFO "NAND: Found NAND on CS %d \n", cs);
 127                         break;
 128                 }
 129                 cs++;
 130         }
 131         if (cs >= GPMC_CS_NUM) {
 132                 printk(KERN_INFO "MTD: Unable to find MTD configuration in "
 133                                  "GPMC   - not registering.\n");
 134                 return;
 135         }
 136
 137         omap2evm_nand_data.cs                   = cs;
 138         omap2evm_nand_data.gpmc_cs_baseaddr     = gpmc_cs_base_add;
 139         omap2evm_nand_data.gpmc_baseaddr        = gpmc_base_add;
 140
 141         if (platform_device_register(&omap2evm_nand_device) < 0) {
 142                 printk(KERN_ERR "Unable to register NAND device\n");
 143                 return;
 144         }
 145 }
 146
 147 static struct resource omap2evm_smc911x_resources[] = {
 148         [0] =   {
 149                 .start  = OMAP2EVM_ETHR_START,
 150                 .end    = (OMAP2EVM_ETHR_START + OMAP2EVM_ETHR_SIZE - 1),
 151                 .flags  = IORESOURCE_MEM,
 152         },
 153         [1] =   {
 154                 .start  = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
 155                 .end    = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
 156                 .flags  = IORESOURCE_IRQ,
 157         },
 158 };
 159
 160 static struct platform_device omap2evm_smc911x_device = {
 161         .name       = "smc911x",
 162         .id     = -1,
 163         .num_resources  = ARRAY_SIZE(omap2evm_smc911x_resources),
 164         .resource   = &omap2evm_smc911x_resources [0],
 165 };
 166
 167 static inline void __init omap2evm_init_smc911x(void)
 168 {
 169         int gpio = OMAP2EVM_ETHR_GPIO_IRQ;
 170         int ret;
 171
 172         ret = gpio_request(gpio, "smc911x IRQ");
 173         if (ret < 0) {
 174                 printk(KERN_ERR "Failed to request GPIO %d for smc911x IRQ\n",
 175                                 gpio);
 176                 return;
 177         }
 178         gpio_direction_input(gpio);
 179
 180 }
 181
 182 static struct platform_device omap2_evm_lcd_device = {
 183         .name           = "omap2evm_lcd",
 184         .id             = -1,
 185 };
 186
 187 static struct omap_lcd_config omap2_evm_lcd_config __initdata = {
 188         .ctrl_name      = "internal",
 189 };
 190
 191 static void ads7846_dev_init(void)
 192 {
 193         int gpio = OMAP2_EVM_TS_GPIO;
 194         int ret;
 195
 196         ret = gpio_request(gpio, "ads7846_pen_down");
 197         if (ret < 0) {
 198                 printk(KERN_ERR "Failed to request GPIO %d for ads7846 pen down IRQ\n",
 199                                 gpio);
 200                 return;
 201         }
 202
 203         gpio_direction_input(gpio);
 204
 205         /*Setting the MUX */
 206         omap_cfg_reg(Y18_2430_MCSPI1_CLK);
 207         omap_cfg_reg(AD15_2430_MCSPI1_SIMO);
 208         omap_cfg_reg(AE17_2430_MCSPI1_SOMI);
 209         omap_cfg_reg(U1_2430_MCSPI1_CS0);
 210
 211         omap_cfg_reg(AF19_2430_GPIO_85);
 212
 213 }
 214
 215 static int ads7846_get_pendown_state(void)
 216 {
 217         return !omap_get_gpio_datain(OMAP2_EVM_TS_GPIO);
 218 }
 219
 220 struct ads7846_platform_data ads7846_config = {
 221         .x_max                  = 0x0fff,
 222         .y_max                  = 0x0fff,
 223         .x_plate_ohms           = 180,
 224         .pressure_max           = 255,
 225         .debounce_max           = 10,
 226         .debounce_tol           = 3,
 227         .debounce_rep           = 1,
 228         .get_pendown_state      = ads7846_get_pendown_state,
 229         .keep_vref_on           = 1,
 230         .settle_delay_usecs     = 150,
 231 };
 232
 233 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 234         .turbo_mode     = 0,
 235         .single_channel = 1,  /* 0: slave, 1: master */
 236 };
 237
 238 struct spi_board_info omap2evm_spi_board_info[] = {
 239         [0] = {
 240                 .modalias               = "ads7846",
 241                 .bus_num                = 1,
 242                 .chip_select            = 0,
 243                 .max_speed_hz           = 1500000,
 244                 .controller_data        = &ads7846_mcspi_config,
 245                 .irq                    = OMAP_GPIO_IRQ(OMAP2_EVM_TS_GPIO),
 246                 .platform_data          = &ads7846_config,
 247         },
 248 };
 249
 250
 251 static int omap2evm_keymap[] = {
 252         KEY(0, 0, KEY_LEFT),
 253         KEY(0, 1, KEY_RIGHT),
 254         KEY(0, 2, KEY_A),
 255         KEY(0, 3, KEY_B),
 256         KEY(1, 0, KEY_DOWN),
 257         KEY(1, 1, KEY_UP),
 258         KEY(1, 2, KEY_E),
 259         KEY(1, 3, KEY_F),
 260         KEY(2, 0, KEY_ENTER),
 261         KEY(2, 1, KEY_I),
 262         KEY(2, 2, KEY_J),
 263         KEY(2, 3, KEY_K),
 264         KEY(3, 0, KEY_M),
 265         KEY(3, 1, KEY_N),
 266         KEY(3, 2, KEY_O),
 267         KEY(3, 3, KEY_P)
 268 };
 269
 270 static struct twl4030_keypad_data omap2evm_kp_data = {
 271         .rows           = 4,
 272         .cols           = 4,
 273         .keymap         = omap2evm_keymap,
 274         .keymapsize     = ARRAY_SIZE(omap2evm_keymap),
 275         .rep            = 1,
 276         .irq            = TWL4030_MODIRQ_KEYPAD,
 277 };
 278
 279 static void __init omap2_evm_init_irq(void)
 280 {
 281         omap2_init_common_hw(NULL);
 282         omap_init_irq();
 283         omap_gpio_init();
 284         omap2evm_init_smc911x();
 285 }
 286
 287 static struct omap_uart_config omap2_evm_uart_config __initdata = {
 288         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 289 };
 290
 291 static struct omap_board_config_kernel omap2_evm_config[] __initdata = {
 292         { OMAP_TAG_UART,        &omap2_evm_uart_config },
 293         { OMAP_TAG_LCD,         &omap2_evm_lcd_config },
 294 };
 295
 296 static struct twl4030_gpio_platform_data omap2evm_gpio_data = {
 297         .gpio_base      = OMAP_MAX_GPIO_LINES,
 298         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 299         .irq_end        = TWL4030_GPIO_IRQ_END,
 300 };
 301
 302 static struct twl4030_usb_data omap2evm_usb_data = {
 303         .usb_mode       = T2_USB_MODE_ULPI,
 304 };
 305
 306 static struct twl4030_madc_platform_data omap2evm_madc_data = {
 307         .irq_line       = 1,
 308 };
 309
 310 static struct twl4030_platform_data omap2evm_twldata = {
 311         .irq_base       = TWL4030_IRQ_BASE,
 312         .irq_end        = TWL4030_IRQ_END,
 313
 314         /* platform_data for children goes here */
 315         .keypad         = &omap2evm_kp_data,
 316         .madc           = &omap2evm_madc_data,
 317         .usb            = &omap2evm_usb_data,
 318         .gpio           = &omap2evm_gpio_data,
 319 };
 320
 321 static struct i2c_board_info __initdata omap2evm_i2c_boardinfo[] = {
 322         {
 323                 I2C_BOARD_INFO("twl4030", 0x48),
 324                 .flags = I2C_CLIENT_WAKE,
 325                 .irq = INT_24XX_SYS_NIRQ,
 326                 .platform_data = &omap2evm_twldata,
 327         },
 328 };
 329
 330 static int __init omap2_evm_i2c_init(void)
 331 {
 332         omap_register_i2c_bus(1, 400, NULL, 0);
 333         omap_register_i2c_bus(2, 2600, omap2evm_i2c_boardinfo,
 334                         ARRAY_SIZE(omap2evm_i2c_boardinfo));
 335         return 0;
 336 }
 337
 338 static struct platform_device *omap2_evm_devices[] __initdata = {
 339         &omap2_evm_lcd_device,
 340         &omap2evm_smc911x_device,
 341 };
 342
 343 static struct twl4030_hsmmc_info mmc[] __initdata = {
 344         {
 345                 .mmc            = 1,
 346                 .wires          = 4,
 347                 .gpio_cd        = -EINVAL,
 348         },
 349         {}      /* Terminator */
 350 };
 351
 352 static void __init omap2_evm_init(void)
 353 {
 354         omap2_evm_i2c_init();
 355
 356         platform_add_devices(omap2_evm_devices, ARRAY_SIZE(omap2_evm_devices));
 357         omap_board_config = omap2_evm_config;
 358         omap_board_config_size = ARRAY_SIZE(omap2_evm_config);
 359         spi_register_board_info(omap2evm_spi_board_info,
 360                                 ARRAY_SIZE(omap2evm_spi_board_info));
 361         omap_serial_init();
 362         hsmmc_init(mmc);
 363         omap2evm_flash_init();
 364         ads7846_dev_init();
 365 }
 366
 367 static void __init omap2_evm_map_io(void)
 368 {
 369         omap2_set_globals_243x();
 370         omap2_map_common_io();
 371 }
 372
 373 MACHINE_START(OMAP2EVM, "OMAP2EVM Board")
 374         /* Maintainer:  Arun KS <arunks@mistralsolutions.com> */
 375         .phys_io        = 0x48000000,
 376         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 377         .boot_params    = 0x80000100,
 378         .map_io         = omap2_evm_map_io,
 379         .init_irq       = omap2_evm_init_irq,
 380         .init_machine   = omap2_evm_init,
 381         .timer          = &omap_timer,
 382 MACHINE_END