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