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 <mach/hardware.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/flash.h>
  36
  37 #include <mach/board.h>
  38 #include <mach/usb-musb.h>
  39 #include <mach/usb-ehci.h>
  40 #include <mach/mmc.h>
  41 #include <mach/common.h>
  42 #include <mach/gpmc.h>
  43 #include <mach/nand.h>
  44 #include <mach/mux.h>
  45
  46 #include "twl4030-generic-scripts.h"
  47 #include "mmc-twl4030.h"
  48
  49
  50 #define GPMC_CS0_BASE  0x60
  51 #define GPMC_CS_SIZE   0x30
  52
  53 #define NAND_BLOCK_SIZE         SZ_128K
  54
  55 static struct mtd_partition omap3beagle_nand_partitions[] = {
  56         /* All the partition sizes are listed in terms of NAND block size */
  57         {
  58                 .name           = "X-Loader",
  59                 .offset         = 0,
  60                 .size           = 4 * NAND_BLOCK_SIZE,
  61                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  62         },
  63         {
  64                 .name           = "U-Boot",
  65                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  66                 .size           = 15 * NAND_BLOCK_SIZE,
  67                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  68         },
  69         {
  70                 .name           = "U-Boot Env",
  71                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  72                 .size           = 1 * NAND_BLOCK_SIZE,
  73         },
  74         {
  75                 .name           = "Kernel",
  76                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  77                 .size           = 32 * NAND_BLOCK_SIZE,
  78         },
  79         {
  80                 .name           = "File System",
  81                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  82                 .size           = MTDPART_SIZ_FULL,
  83         },
  84 };
  85
  86 static struct omap_nand_platform_data omap3beagle_nand_data = {
  87         .options        = NAND_BUSWIDTH_16,
  88         .parts          = omap3beagle_nand_partitions,
  89         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  90         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  91         .nand_setup     = NULL,
  92         .dev_ready      = NULL,
  93 };
  94
  95 static struct resource omap3beagle_nand_resource = {
  96         .flags          = IORESOURCE_MEM,
  97 };
  98
  99 static struct platform_device omap3beagle_nand_device = {
 100         .name           = "omap2-nand",
 101         .id             = -1,
 102         .dev            = {
 103                 .platform_data  = &omap3beagle_nand_data,
 104         },
 105         .num_resources  = 1,
 106         .resource       = &omap3beagle_nand_resource,
 107 };
 108
 109 #include "sdram-micron-mt46h32m32lf-6.h"
 110
 111 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 112         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 113 };
 114
 115 static struct twl4030_usb_data beagle_usb_data = {
 116         .usb_mode       = T2_USB_MODE_ULPI,
 117 };
 118
 119 static struct gpio_led gpio_leds[];
 120
 121 static int beagle_twl_gpio_setup(struct device *dev,
 122                 unsigned gpio, unsigned ngpio)
 123 {
 124         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 125
 126         /* REVISIT: need ehci-omap hooks for external VBUS
 127          * power switch and overcurrent detect
 128          */
 129
 130         gpio_request(gpio + 1, "EHCI_nOC");
 131         gpio_direction_input(gpio + 1);
 132
 133         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 134         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 135         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 136
 137         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 138         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 139
 140         return 0;
 141 }
 142
 143 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 144         .gpio_base      = OMAP_MAX_GPIO_LINES,
 145         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 146         .irq_end        = TWL4030_GPIO_IRQ_END,
 147         .use_leds       = true,
 148         .pullups        = BIT(1),
 149         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 150                                 | BIT(15) | BIT(16) | BIT(17),
 151         .setup          = beagle_twl_gpio_setup,
 152 };
 153
 154 static struct twl4030_platform_data beagle_twldata = {
 155         .irq_base       = TWL4030_IRQ_BASE,
 156         .irq_end        = TWL4030_IRQ_END,
 157
 158         /* platform_data for children goes here */
 159         .usb            = &beagle_usb_data,
 160         .gpio           = &beagle_gpio_data,
 161         .power          = &generic3430_t2scripts_data,
 162 };
 163
 164 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 165         {
 166                 I2C_BOARD_INFO("twl4030", 0x48),
 167                 .flags = I2C_CLIENT_WAKE,
 168                 .irq = INT_34XX_SYS_NIRQ,
 169                 .platform_data = &beagle_twldata,
 170         },
 171 };
 172
 173 static int __init omap3_beagle_i2c_init(void)
 174 {
 175         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 176                         ARRAY_SIZE(beagle_i2c_boardinfo));
 177 #ifdef CONFIG_I2C2_OMAP_BEAGLE
 178         omap_register_i2c_bus(2, 400, NULL, 0);
 179 #endif
 180         omap_register_i2c_bus(3, 400, NULL, 0);
 181         return 0;
 182 }
 183
 184 static void __init omap3_beagle_init_irq(void)
 185 {
 186         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 187         omap_init_irq();
 188         omap_gpio_init();
 189 }
 190
 191 static struct platform_device omap3_beagle_lcd_device = {
 192         .name           = "omap3beagle_lcd",
 193         .id             = -1,
 194 };
 195
 196 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 197         .ctrl_name      = "internal",
 198 };
 199
 200 static struct gpio_led gpio_leds[] = {
 201         {
 202                 .name                   = "beagleboard::usr0",
 203                 .default_trigger        = "heartbeat",
 204                 .gpio                   = 150,
 205         },
 206         {
 207                 .name                   = "beagleboard::usr1",
 208                 .default_trigger        = "mmc0",
 209                 .gpio                   = 149,
 210         },
 211         {
 212                 .name                   = "beagleboard::pmu_stat",
 213                 .gpio                   = -EINVAL,      /* gets replaced */
 214                 .active_low             = true,
 215         },
 216 };
 217
 218 static struct gpio_led_platform_data gpio_led_info = {
 219         .leds           = gpio_leds,
 220         .num_leds       = ARRAY_SIZE(gpio_leds),
 221 };
 222
 223 static struct platform_device leds_gpio = {
 224         .name   = "leds-gpio",
 225         .id     = -1,
 226         .dev    = {
 227                 .platform_data  = &gpio_led_info,
 228         },
 229 };
 230
 231 static struct gpio_keys_button gpio_buttons[] = {
 232         {
 233                 .code                   = BTN_EXTRA,
 234                 .gpio                   = 7,
 235                 .desc                   = "user",
 236                 .wakeup                 = 1,
 237         },
 238 };
 239
 240 static struct gpio_keys_platform_data gpio_key_info = {
 241         .buttons        = gpio_buttons,
 242         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 243 };
 244
 245 static struct platform_device keys_gpio = {
 246         .name   = "gpio-keys",
 247         .id     = -1,
 248         .dev    = {
 249                 .platform_data  = &gpio_key_info,
 250         },
 251 };
 252
 253 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 254         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 255         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 256 };
 257
 258 static struct platform_device *omap3_beagle_devices[] __initdata = {
 259         &omap3_beagle_lcd_device,
 260         &leds_gpio,
 261         &keys_gpio,
 262 };
 263
 264 static void __init omap3beagle_flash_init(void)
 265 {
 266         u8 cs = 0;
 267         u8 nandcs = GPMC_CS_NUM + 1;
 268
 269         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 270
 271         /* find out the chip-select on which NAND exists */
 272         while (cs < GPMC_CS_NUM) {
 273                 u32 ret = 0;
 274                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 275
 276                 if ((ret & 0xC00) == 0x800) {
 277                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 278                         if (nandcs > GPMC_CS_NUM)
 279                                 nandcs = cs;
 280                 }
 281                 cs++;
 282         }
 283
 284         if (nandcs > GPMC_CS_NUM) {
 285                 printk(KERN_INFO "NAND: Unable to find configuration "
 286                                  "in GPMC\n ");
 287                 return;
 288         }
 289
 290         if (nandcs < GPMC_CS_NUM) {
 291                 omap3beagle_nand_data.cs = nandcs;
 292                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 293                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 294                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 295
 296                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 297                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 298                         printk(KERN_ERR "Unable to register NAND device\n");
 299         }
 300 }
 301
 302 static struct twl4030_hsmmc_info mmc[] __initdata = {
 303         {
 304                 .mmc            = 1,
 305                 .wires          = 8,
 306                 .gpio_cd        = TWL4030_GPIO_IRQ_NO(0),
 307         },
 308         {}      /* Terminator */
 309 };
 310
 311 static void __init omap3_beagle_init(void)
 312 {
 313         omap3_beagle_i2c_init();
 314         platform_add_devices(omap3_beagle_devices,
 315                         ARRAY_SIZE(omap3_beagle_devices));
 316         omap_board_config = omap3_beagle_config;
 317         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 318         omap_serial_init();
 319
 320         omap_cfg_reg(AH8_34XX_GPIO29);
 321         gpio_request(29, "mmc0_wp");
 322         gpio_direction_input(29);
 323         hsmmc_init(mmc);
 324
 325         omap_cfg_reg(J25_34XX_GPIO170);
 326         gpio_request(170, "DVI_nPD");
 327         /* REVISIT leave DVI powered down until it's needed ... */
 328         gpio_direction_output(170, true);
 329
 330         usb_musb_init();
 331         usb_ehci_init();
 332         omap3beagle_flash_init();
 333 }
 334
 335 static void __init omap3_beagle_map_io(void)
 336 {
 337         omap2_set_globals_343x();
 338         omap2_map_common_io();
 339 }
 340
 341 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 342         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 343         .phys_io        = 0x48000000,
 344         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 345         .boot_params    = 0x80000100,
 346         .map_io         = omap3_beagle_map_io,
 347         .init_irq       = omap3_beagle_init_irq,
 348         .init_machine   = omap3_beagle_init,
 349         .timer          = &omap_timer,
 350 MACHINE_END