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