arch/arm/mach-omap2/board-omap3beagle.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3beagle.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/io.h>
  22 #include <linux/leds.h>
  23 #include <linux/gpio.h>
  24 #include <linux/input.h>
  25 #include <linux/gpio_keys.h>
  26
  27 #include <linux/mtd/mtd.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/mtd/nand.h>
  30
  31 #include <linux/i2c/twl4030.h>
  32
  33 #include <mach/hardware.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/flash.h>
  38
  39 #include <mach/board.h>
  40 #include <mach/common.h>
  41 #include <mach/gpmc.h>
  42 #include <mach/nand.h>
  43 #include <mach/mux.h>
  44 #include <mach/usb.h>
  45
  46 #include "mmc-twl4030.h"
  47
  48 #define GPMC_CS0_BASE  0x60
  49 #define GPMC_CS_SIZE   0x30
  50
  51 #define NAND_BLOCK_SIZE         SZ_128K
  52
  53 static struct mtd_partition omap3beagle_nand_partitions[] = {
  54         /* All the partition sizes are listed in terms of NAND block size */
  55         {
  56                 .name           = "X-Loader",
  57                 .offset         = 0,
  58                 .size           = 4 * NAND_BLOCK_SIZE,
  59                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  60         },
  61         {
  62                 .name           = "U-Boot",
  63                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  64                 .size           = 15 * NAND_BLOCK_SIZE,
  65                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  66         },
  67         {
  68                 .name           = "U-Boot Env",
  69                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  70                 .size           = 1 * NAND_BLOCK_SIZE,
  71         },
  72         {
  73                 .name           = "Kernel",
  74                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  75                 .size           = 32 * NAND_BLOCK_SIZE,
  76         },
  77         {
  78                 .name           = "File System",
  79                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  80                 .size           = MTDPART_SIZ_FULL,
  81         },
  82 };
  83
  84 static struct omap_nand_platform_data omap3beagle_nand_data = {
  85         .options        = NAND_BUSWIDTH_16,
  86         .parts          = omap3beagle_nand_partitions,
  87         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  88         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  89         .nand_setup     = NULL,
  90         .dev_ready      = NULL,
  91 };
  92
  93 static struct resource omap3beagle_nand_resource = {
  94         .flags          = IORESOURCE_MEM,
  95 };
  96
  97 static struct platform_device omap3beagle_nand_device = {
  98         .name           = "omap2-nand",
  99         .id             = -1,
 100         .dev            = {
 101                 .platform_data  = &omap3beagle_nand_data,
 102         },
 103         .num_resources  = 1,
 104         .resource       = &omap3beagle_nand_resource,
 105 };
 106
 107 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 108         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 109 };
 110
 111 static struct twl4030_hsmmc_info mmc[] = {
 112         {
 113                 .mmc            = 1,
 114                 .wires          = 8,
 115                 .gpio_wp        = 29,
 116         },
 117         {}      /* Terminator */
 118 };
 119
 120 static struct gpio_led gpio_leds[];
 121
 122 static int beagle_twl_gpio_setup(struct device *dev,
 123                 unsigned gpio, unsigned ngpio)
 124 {
 125         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 126         omap_cfg_reg(AH8_34XX_GPIO29);
 127         mmc[0].gpio_cd = gpio + 0;
 128         twl4030_mmc_init(mmc);
 129
 130         /* REVISIT: need ehci-omap hooks for external VBUS
 131          * power switch and overcurrent detect
 132          */
 133
 134         gpio_request(gpio + 1, "EHCI_nOC");
 135         gpio_direction_input(gpio + 1);
 136
 137         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 138         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 139         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 140
 141         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 142         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 143
 144         return 0;
 145 }
 146
 147 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 148         .gpio_base      = OMAP_MAX_GPIO_LINES,
 149         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 150         .irq_end        = TWL4030_GPIO_IRQ_END,
 151         .use_leds       = true,
 152         .pullups        = BIT(1),
 153         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 154                                 | BIT(15) | BIT(16) | BIT(17),
 155         .setup          = beagle_twl_gpio_setup,
 156 };
 157
 158 static struct twl4030_platform_data beagle_twldata = {
 159         .irq_base       = TWL4030_IRQ_BASE,
 160         .irq_end        = TWL4030_IRQ_END,
 161
 162         /* platform_data for children goes here */
 163         .gpio           = &beagle_gpio_data,
 164 };
 165
 166 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 167         {
 168                 I2C_BOARD_INFO("twl4030", 0x48),
 169                 .flags = I2C_CLIENT_WAKE,
 170                 .irq = INT_34XX_SYS_NIRQ,
 171                 .platform_data = &beagle_twldata,
 172         },
 173 };
 174
 175 static int __init omap3_beagle_i2c_init(void)
 176 {
 177         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 178                         ARRAY_SIZE(beagle_i2c_boardinfo));
 179         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 180          * projector don't work reliably with 400kHz */
 181         omap_register_i2c_bus(3, 100, NULL, 0);
 182         return 0;
 183 }
 184
 185 static void __init omap3_beagle_init_irq(void)
 186 {
 187         omap2_init_common_hw(NULL);
 188         omap_init_irq();
 189         omap_gpio_init();
 190 }
 191
 192 static struct platform_device omap3_beagle_lcd_device = {
 193         .name           = "omap3beagle_lcd",
 194         .id             = -1,
 195 };
 196
 197 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 198         .ctrl_name      = "internal",
 199 };
 200
 201 static struct gpio_led gpio_leds[] = {
 202         {
 203                 .name                   = "beagleboard::usr0",
 204                 .default_trigger        = "heartbeat",
 205                 .gpio                   = 150,
 206         },
 207         {
 208                 .name                   = "beagleboard::usr1",
 209                 .default_trigger        = "mmc0",
 210                 .gpio                   = 149,
 211         },
 212         {
 213                 .name                   = "beagleboard::pmu_stat",
 214                 .gpio                   = -EINVAL,      /* gets replaced */
 215                 .active_low             = true,
 216         },
 217 };
 218
 219 static struct gpio_led_platform_data gpio_led_info = {
 220         .leds           = gpio_leds,
 221         .num_leds       = ARRAY_SIZE(gpio_leds),
 222 };
 223
 224 static struct platform_device leds_gpio = {
 225         .name   = "leds-gpio",
 226         .id     = -1,
 227         .dev    = {
 228                 .platform_data  = &gpio_led_info,
 229         },
 230 };
 231
 232 static struct gpio_keys_button gpio_buttons[] = {
 233         {
 234                 .code                   = BTN_EXTRA,
 235                 .gpio                   = 7,
 236                 .desc                   = "user",
 237                 .wakeup                 = 1,
 238         },
 239 };
 240
 241 static struct gpio_keys_platform_data gpio_key_info = {
 242         .buttons        = gpio_buttons,
 243         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 244 };
 245
 246 static struct platform_device keys_gpio = {
 247         .name   = "gpio-keys",
 248         .id     = -1,
 249         .dev    = {
 250                 .platform_data  = &gpio_key_info,
 251         },
 252 };
 253
 254 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 255         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 256         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 257 };
 258
 259 static struct platform_device *omap3_beagle_devices[] __initdata = {
 260         &omap3_beagle_lcd_device,
 261         &leds_gpio,
 262         &keys_gpio,
 263 };
 264
 265 static void __init omap3beagle_flash_init(void)
 266 {
 267         u8 cs = 0;
 268         u8 nandcs = GPMC_CS_NUM + 1;
 269
 270         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 271
 272         /* find out the chip-select on which NAND exists */
 273         while (cs < GPMC_CS_NUM) {
 274                 u32 ret = 0;
 275                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 276
 277                 if ((ret & 0xC00) == 0x800) {
 278                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 279                         if (nandcs > GPMC_CS_NUM)
 280                                 nandcs = cs;
 281                 }
 282                 cs++;
 283         }
 284
 285         if (nandcs > GPMC_CS_NUM) {
 286                 printk(KERN_INFO "NAND: Unable to find configuration "
 287                                  "in GPMC\n ");
 288                 return;
 289         }
 290
 291         if (nandcs < GPMC_CS_NUM) {
 292                 omap3beagle_nand_data.cs = nandcs;
 293                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 294                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 295                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 296
 297                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 298                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 299                         printk(KERN_ERR "Unable to register NAND device\n");
 300         }
 301 }
 302
 303 static void __init omap3_beagle_init(void)
 304 {
 305         omap3_beagle_i2c_init();
 306         platform_add_devices(omap3_beagle_devices,
 307                         ARRAY_SIZE(omap3_beagle_devices));
 308         omap_board_config = omap3_beagle_config;
 309         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 310         omap_serial_init();
 311
 312         omap_cfg_reg(J25_34XX_GPIO170);
 313         gpio_request(170, "DVI_nPD");
 314         /* REVISIT leave DVI powered down until it's needed ... */
 315         gpio_direction_output(170, true);
 316
 317         usb_musb_init();
 318         omap3beagle_flash_init();
 319 }
 320
 321 static void __init omap3_beagle_map_io(void)
 322 {
 323         omap2_set_globals_343x();
 324         omap2_map_common_io();
 325 }
 326
 327 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 328         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 329         .phys_io        = 0x48000000,
 330         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 331         .boot_params    = 0x80000100,
 332         .map_io         = omap3_beagle_map_io,
 333         .init_irq       = omap3_beagle_init_irq,
 334         .init_machine   = omap3_beagle_init,
 335         .timer          = &omap_timer,
 336 MACHINE_END