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/gpmc.h>
  39 #include <mach/nand.h>
  40 #include <mach/mcspi.h>
  41 #include <mach/mux.h>
  42
  43 #include "mmc-twl4030.h"
  44
  45 #define OMAP2EVM_ETHR_START             0x2c000000
  46 #define OMAP2EVM_ETHR_SIZE              1024
  47 #define OMAP2EVM_ETHR_GPIO_IRQ          149
  48 #define OMAP2_EVM_TS_GPIO               85
  49
  50 #define GPMC_OFF_CONFIG1_0              0x60
  51
  52 static struct mtd_partition omap2evm_nand_partitions[] = {
  53         {
  54                 .name           = "X-Loader",
  55                 .offset         = 0,
  56                 .size           = 1 * (64 * 2048),
  57                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  58         },
  59         {
  60                 .name           = "U-Boot",
  61                 .offset         = MTDPART_OFS_APPEND,
  62                 .size           = 3 * (64 * 2048),
  63                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  64         },
  65         {
  66                 .name           = "U-Boot Environment",
  67                 .offset         = MTDPART_OFS_APPEND,
  68                 .size           = 1 * (64 * 2048),
  69          },
  70         {
  71                 .name           = "Kernel",
  72                 .offset         = MTDPART_OFS_APPEND,
  73                 .size           = 16 * (64 * 2048),     /* 2MB */
  74         },
  75         {
  76                 .name           = "Ramdisk",
  77                 .offset         = MTDPART_OFS_APPEND,
  78                 .size           = 32 * (64 * 2048),     /* 4MB */
  79         },
  80         {
  81                 .name           = "Filesystem",
  82                 .offset         = MTDPART_OFS_APPEND,
  83                 .size           = MTDPART_SIZ_FULL,
  84         }
  85 };
  86
  87 static struct omap_nand_platform_data omap2evm_nand_data = {
  88         .parts          = omap2evm_nand_partitions,
  89         .nr_parts       = ARRAY_SIZE(omap2evm_nand_partitions),
  90         .dma_channel    = -1,   /* disable DMA in OMAP NAND driver */
  91 };
  92
  93 static struct resource omap2evm_nand_resource = {
  94         .flags          = IORESOURCE_MEM,
  95 };
  96
  97 static struct platform_device omap2evm_nand_device = {
  98         .name           = "omap2-nand",
  99         .id             = -1,
 100         .dev            = {
 101                 .platform_data  = &omap2evm_nand_data,
 102         },
 103         .num_resources  = 1,
 104         .resource       = &omap2evm_nand_resource,
 105 };
 106
 107 void __init omap2evm_flash_init(void)
 108 {
 109         void __iomem *gpmc_base_add, *gpmc_cs_base_add;
 110         unsigned char cs = 0;
 111
 112         gpmc_base_add = (__force void __iomem *)OMAP243X_GPMC_VIRT;
 113         while (cs < GPMC_CS_NUM) {
 114                 int ret = 0;
 115
 116                 /* Each GPMC set for a single CS is at offset 0x30 */
 117                 gpmc_cs_base_add = (gpmc_base_add + GPMC_OFF_CONFIG1_0 +
 118                                     (cs * 0x30));
 119
 120                 /* xloader/Uboot would have programmed the NAND
 121                  * base address for us This is a ugly hack. The proper
 122                  * way of doing this is to pass the setup of u-boot up
 123                  * to kernel using kernel params - something on the
 124                  * lines of machineID. Check if Nand is
 125                  * configured */
 126                 ret = __raw_readl(gpmc_cs_base_add + GPMC_CS_CONFIG1);
 127                 if ((ret & 0xC00) == (0x800)) {
 128                         /* Found it!! */
 129                         printk(KERN_INFO "NAND: Found NAND on CS %d \n", cs);
 130                         break;
 131                 }
 132                 cs++;
 133         }
 134         if (cs >= GPMC_CS_NUM) {
 135                 printk(KERN_INFO "MTD: Unable to find MTD configuration in "
 136                                  "GPMC   - not registering.\n");
 137                 return;
 138         }
 139
 140         omap2evm_nand_data.cs                   = cs;
 141         omap2evm_nand_data.gpmc_cs_baseaddr     = gpmc_cs_base_add;
 142         omap2evm_nand_data.gpmc_baseaddr        = gpmc_base_add;
 143
 144         if (platform_device_register(&omap2evm_nand_device) < 0) {
 145                 printk(KERN_ERR "Unable to register NAND device\n");
 146                 return;
 147         }
 148 }
 149
 150 static struct resource omap2evm_smc911x_resources[] = {
 151         [0] =   {
 152                 .start  = OMAP2EVM_ETHR_START,
 153                 .end    = (OMAP2EVM_ETHR_START + OMAP2EVM_ETHR_SIZE - 1),
 154                 .flags  = IORESOURCE_MEM,
 155         },
 156         [1] =   {
 157                 .start  = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
 158                 .end    = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
 159                 .flags  = IORESOURCE_IRQ,
 160         },
 161 };
 162
 163 static struct platform_device omap2evm_smc911x_device = {
 164         .name       = "smc911x",
 165         .id     = -1,
 166         .num_resources  = ARRAY_SIZE(omap2evm_smc911x_resources),
 167         .resource   = &omap2evm_smc911x_resources [0],
 168 };
 169
 170 static inline void __init omap2evm_init_smc911x(void)
 171 {
 172         int gpio = OMAP2EVM_ETHR_GPIO_IRQ;
 173         int ret;
 174
 175         ret = gpio_request(gpio, "smc911x IRQ");
 176         if (ret < 0) {
 177                 printk(KERN_ERR "Failed to request GPIO %d for smc911x IRQ\n",
 178                                 gpio);
 179                 return;
 180         }
 181         gpio_direction_input(gpio);
 182
 183 }
 184
 185 static struct platform_device omap2_evm_lcd_device = {
 186         .name           = "omap2evm_lcd",
 187         .id             = -1,
 188 };
 189
 190 static struct omap_lcd_config omap2_evm_lcd_config __initdata = {
 191         .ctrl_name      = "internal",
 192 };
 193
 194 static void ads7846_dev_init(void)
 195 {
 196         int gpio = OMAP2_EVM_TS_GPIO;
 197         int ret;
 198
 199         ret = gpio_request(gpio, "ads7846_pen_down");
 200         if (ret < 0) {
 201                 printk(KERN_ERR "Failed to request GPIO %d for ads7846 pen down IRQ\n",
 202                                 gpio);
 203                 return;
 204         }
 205
 206         gpio_direction_input(gpio);
 207
 208         /*Setting the MUX */
 209         omap_cfg_reg(Y18_2430_MCSPI1_CLK);
 210         omap_cfg_reg(AD15_2430_MCSPI1_SIMO);
 211         omap_cfg_reg(AE17_2430_MCSPI1_SOMI);
 212         omap_cfg_reg(U1_2430_MCSPI1_CS0);
 213
 214         omap_cfg_reg(AF19_2430_GPIO_85);
 215
 216 }
 217
 218 static int ads7846_get_pendown_state(void)
 219 {
 220         return !gpio_get_value(OMAP2_EVM_TS_GPIO);
 221 }
 222
 223 struct ads7846_platform_data ads7846_config = {
 224         .x_max                  = 0x0fff,
 225         .y_max                  = 0x0fff,
 226         .x_plate_ohms           = 180,
 227         .pressure_max           = 255,
 228         .debounce_max           = 10,
 229         .debounce_tol           = 3,
 230         .debounce_rep           = 1,
 231         .get_pendown_state      = ads7846_get_pendown_state,
 232         .keep_vref_on           = 1,
 233         .settle_delay_usecs     = 150,
 234 };
 235
 236 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 237         .turbo_mode     = 0,
 238         .single_channel = 1,  /* 0: slave, 1: master */
 239 };
 240
 241 struct spi_board_info omap2evm_spi_board_info[] = {
 242         [0] = {
 243                 .modalias               = "ads7846",
 244                 .bus_num                = 1,
 245                 .chip_select            = 0,
 246                 .max_speed_hz           = 1500000,
 247                 .controller_data        = &ads7846_mcspi_config,
 248                 .irq                    = OMAP_GPIO_IRQ(OMAP2_EVM_TS_GPIO),
 249                 .platform_data          = &ads7846_config,
 250         },
 251 };
 252
 253
 254 static int omap2evm_keymap[] = {
 255         KEY(0, 0, KEY_LEFT),
 256         KEY(0, 1, KEY_RIGHT),
 257         KEY(0, 2, KEY_A),
 258         KEY(0, 3, KEY_B),
 259         KEY(1, 0, KEY_DOWN),
 260         KEY(1, 1, KEY_UP),
 261         KEY(1, 2, KEY_E),
 262         KEY(1, 3, KEY_F),
 263         KEY(2, 0, KEY_ENTER),
 264         KEY(2, 1, KEY_I),
 265         KEY(2, 2, KEY_J),
 266         KEY(2, 3, KEY_K),
 267         KEY(3, 0, KEY_M),
 268         KEY(3, 1, KEY_N),
 269         KEY(3, 2, KEY_O),
 270         KEY(3, 3, KEY_P)
 271 };
 272
 273 static struct twl4030_keypad_data omap2evm_kp_data = {
 274         .rows           = 4,
 275         .cols           = 4,
 276         .keymap         = omap2evm_keymap,
 277         .keymapsize     = ARRAY_SIZE(omap2evm_keymap),
 278         .rep            = 1,
 279 };
 280
 281 static void __init omap2_evm_init_irq(void)
 282 {
 283         omap2_init_common_hw(NULL);
 284         omap_init_irq();
 285         omap_gpio_init();
 286         omap2evm_init_smc911x();
 287 }
 288
 289 static struct omap_uart_config omap2_evm_uart_config __initdata = {
 290         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 291 };
 292
 293 static struct omap_board_config_kernel omap2_evm_config[] __initdata = {
 294         { OMAP_TAG_UART,        &omap2_evm_uart_config },
 295         { OMAP_TAG_LCD,         &omap2_evm_lcd_config },
 296 };
 297
 298 static struct twl4030_gpio_platform_data omap2evm_gpio_data = {
 299         .gpio_base      = OMAP_MAX_GPIO_LINES,
 300         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 301         .irq_end        = TWL4030_GPIO_IRQ_END,
 302 };
 303
 304 static struct twl4030_usb_data omap2evm_usb_data = {
 305         .usb_mode       = T2_USB_MODE_ULPI,
 306 };
 307
 308 static struct twl4030_madc_platform_data omap2evm_madc_data = {
 309         .irq_line       = 1,
 310 };
 311
 312 static struct twl4030_platform_data omap2evm_twldata = {
 313         .irq_base       = TWL4030_IRQ_BASE,
 314         .irq_end        = TWL4030_IRQ_END,
 315
 316         /* platform_data for children goes here */
 317         .keypad         = &omap2evm_kp_data,
 318         .madc           = &omap2evm_madc_data,
 319         .usb            = &omap2evm_usb_data,
 320         .gpio           = &omap2evm_gpio_data,
 321 };
 322
 323 static struct i2c_board_info __initdata omap2evm_i2c_boardinfo[] = {
 324         {
 325                 I2C_BOARD_INFO("twl4030", 0x48),
 326                 .flags = I2C_CLIENT_WAKE,
 327                 .irq = INT_24XX_SYS_NIRQ,
 328                 .platform_data = &omap2evm_twldata,
 329         },
 330 };
 331
 332 static int __init omap2_evm_i2c_init(void)
 333 {
 334         omap_register_i2c_bus(1, 400, NULL, 0);
 335         omap_register_i2c_bus(2, 2600, omap2evm_i2c_boardinfo,
 336                         ARRAY_SIZE(omap2evm_i2c_boardinfo));
 337         return 0;
 338 }
 339
 340 static struct platform_device *omap2_evm_devices[] __initdata = {
 341         &omap2_evm_lcd_device,
 342         &omap2evm_smc911x_device,
 343 };
 344
 345 static struct twl4030_hsmmc_info mmc[] __initdata = {
 346         {
 347                 .mmc            = 1,
 348                 .wires          = 4,
 349                 .gpio_cd        = -EINVAL,
 350                 .gpio_wp        = -EINVAL,
 351         },
 352         {}      /* Terminator */
 353 };
 354
 355 static void __init omap2_evm_init(void)
 356 {
 357         omap2_evm_i2c_init();
 358
 359         platform_add_devices(omap2_evm_devices, ARRAY_SIZE(omap2_evm_devices));
 360         omap_board_config = omap2_evm_config;
 361         omap_board_config_size = ARRAY_SIZE(omap2_evm_config);
 362         spi_register_board_info(omap2evm_spi_board_info,
 363                                 ARRAY_SIZE(omap2evm_spi_board_info));
 364         omap_serial_init();
 365         twl4030_mmc_init(mmc);
 366         omap2evm_flash_init();
 367         ads7846_dev_init();
 368 }
 369
 370 static void __init omap2_evm_map_io(void)
 371 {
 372         omap2_set_globals_243x();
 373         omap2_map_common_io();
 374 }
 375
 376 MACHINE_START(OMAP2EVM, "OMAP2EVM Board")
 377         /* Maintainer:  Arun KS <arunks@mistralsolutions.com> */
 378         .phys_io        = 0x48000000,
 379         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 380         .boot_params    = 0x80000100,
 381         .map_io         = omap2_evm_map_io,
 382         .init_irq       = omap2_evm_init_irq,
 383         .init_machine   = omap2_evm_init,
 384         .timer          = &omap_timer,
 385 MACHINE_END