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   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/common.h>
  39 #include <mach/gpmc.h>
  40 #include <mach/nand.h>
  41 #include <mach/mux.h>
  42
  43 #include "mmc-twl4030.h"
  44
  45 #define GPMC_CS0_BASE  0x60
  46 #define GPMC_CS_SIZE   0x30
  47
  48 #define NAND_BLOCK_SIZE         SZ_128K
  49
  50 static struct mtd_partition omap3beagle_nand_partitions[] = {
  51         /* All the partition sizes are listed in terms of NAND block size */
  52         {
  53                 .name           = "X-Loader",
  54                 .offset         = 0,
  55                 .size           = 4 * NAND_BLOCK_SIZE,
  56                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  57         },
  58         {
  59                 .name           = "U-Boot",
  60                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  61                 .size           = 15 * NAND_BLOCK_SIZE,
  62                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  63         },
  64         {
  65                 .name           = "U-Boot Env",
  66                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  67                 .size           = 1 * NAND_BLOCK_SIZE,
  68         },
  69         {
  70                 .name           = "Kernel",
  71                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  72                 .size           = 32 * NAND_BLOCK_SIZE,
  73         },
  74         {
  75                 .name           = "File System",
  76                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  77                 .size           = MTDPART_SIZ_FULL,
  78         },
  79 };
  80
  81 static struct omap_nand_platform_data omap3beagle_nand_data = {
  82         .options        = NAND_BUSWIDTH_16,
  83         .parts          = omap3beagle_nand_partitions,
  84         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  85         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  86         .nand_setup     = NULL,
  87         .dev_ready      = NULL,
  88 };
  89
  90 static struct resource omap3beagle_nand_resource = {
  91         .flags          = IORESOURCE_MEM,
  92 };
  93
  94 static struct platform_device omap3beagle_nand_device = {
  95         .name           = "omap2-nand",
  96         .id             = -1,
  97         .dev            = {
  98                 .platform_data  = &omap3beagle_nand_data,
  99         },
 100         .num_resources  = 1,
 101         .resource       = &omap3beagle_nand_resource,
 102 };
 103
 104 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 105         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 106 };
 107
 108 static struct twl4030_hsmmc_info mmc[] = {
 109         {
 110                 .mmc            = 1,
 111                 .wires          = 8,
 112                 .gpio_wp        = 29,
 113         },
 114         {}      /* Terminator */
 115 };
 116
 117 static struct gpio_led gpio_leds[];
 118
 119 static int beagle_twl_gpio_setup(struct device *dev,
 120                 unsigned gpio, unsigned ngpio)
 121 {
 122         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 123
 124         /* REVISIT: need ehci-omap hooks for external VBUS
 125          * power switch and overcurrent detect
 126          */
 127
 128         gpio_request(gpio + 1, "EHCI_nOC");
 129         gpio_direction_input(gpio + 1);
 130
 131         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 132         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 133         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 134
 135         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 136         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 137
 138         return 0;
 139 }
 140
 141 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 142         .gpio_base      = OMAP_MAX_GPIO_LINES,
 143         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 144         .irq_end        = TWL4030_GPIO_IRQ_END,
 145         .use_leds       = true,
 146         .pullups        = BIT(1),
 147         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 148                                 | BIT(15) | BIT(16) | BIT(17),
 149         .setup          = beagle_twl_gpio_setup,
 150 };
 151
 152 static struct twl4030_platform_data beagle_twldata = {
 153         .irq_base       = TWL4030_IRQ_BASE,
 154         .irq_end        = TWL4030_IRQ_END,
 155
 156         /* platform_data for children goes here */
 157         .gpio           = &beagle_gpio_data,
 158 };
 159
 160 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 161         {
 162                 I2C_BOARD_INFO("twl4030", 0x48),
 163                 .flags = I2C_CLIENT_WAKE,
 164                 .irq = INT_34XX_SYS_NIRQ,
 165                 .platform_data = &beagle_twldata,
 166         },
 167 };
 168
 169 static int __init omap3_beagle_i2c_init(void)
 170 {
 171         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 172                         ARRAY_SIZE(beagle_i2c_boardinfo));
 173 #ifdef CONFIG_I2C2_OMAP_BEAGLE
 174         omap_register_i2c_bus(2, 400, NULL, 0);
 175 #endif
 176         omap_register_i2c_bus(3, 400, NULL, 0);
 177         return 0;
 178 }
 179
 180 static void __init omap3_beagle_init_irq(void)
 181 {
 182         omap2_init_common_hw();
 183         omap_init_irq();
 184         omap_gpio_init();
 185 }
 186
 187 static struct platform_device omap3_beagle_lcd_device = {
 188         .name           = "omap3beagle_lcd",
 189         .id             = -1,
 190 };
 191
 192 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 193         .ctrl_name      = "internal",
 194 };
 195
 196 static struct gpio_led gpio_leds[] = {
 197         {
 198                 .name                   = "beagleboard::usr0",
 199                 .default_trigger        = "heartbeat",
 200                 .gpio                   = 150,
 201         },
 202         {
 203                 .name                   = "beagleboard::usr1",
 204                 .default_trigger        = "mmc0",
 205                 .gpio                   = 149,
 206         },
 207         {
 208                 .name                   = "beagleboard::pmu_stat",
 209                 .gpio                   = -EINVAL,      /* gets replaced */
 210                 .active_low             = true,
 211         },
 212 };
 213
 214 static struct gpio_led_platform_data gpio_led_info = {
 215         .leds           = gpio_leds,
 216         .num_leds       = ARRAY_SIZE(gpio_leds),
 217 };
 218
 219 static struct platform_device leds_gpio = {
 220         .name   = "leds-gpio",
 221         .id     = -1,
 222         .dev    = {
 223                 .platform_data  = &gpio_led_info,
 224         },
 225 };
 226
 227 static struct gpio_keys_button gpio_buttons[] = {
 228         {
 229                 .code                   = BTN_EXTRA,
 230                 .gpio                   = 7,
 231                 .desc                   = "user",
 232                 .wakeup                 = 1,
 233         },
 234 };
 235
 236 static struct gpio_keys_platform_data gpio_key_info = {
 237         .buttons        = gpio_buttons,
 238         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 239 };
 240
 241 static struct platform_device keys_gpio = {
 242         .name   = "gpio-keys",
 243         .id     = -1,
 244         .dev    = {
 245                 .platform_data  = &gpio_key_info,
 246         },
 247 };
 248
 249 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 250         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 251         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 252 };
 253
 254 static struct platform_device *omap3_beagle_devices[] __initdata = {
 255         &omap3_beagle_lcd_device,
 256         &leds_gpio,
 257         &keys_gpio,
 258 };
 259
 260 static void __init omap3beagle_flash_init(void)
 261 {
 262         u8 cs = 0;
 263         u8 nandcs = GPMC_CS_NUM + 1;
 264
 265         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 266
 267         /* find out the chip-select on which NAND exists */
 268         while (cs < GPMC_CS_NUM) {
 269                 u32 ret = 0;
 270                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 271
 272                 if ((ret & 0xC00) == 0x800) {
 273                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 274                         if (nandcs > GPMC_CS_NUM)
 275                                 nandcs = cs;
 276                 }
 277                 cs++;
 278         }
 279
 280         if (nandcs > GPMC_CS_NUM) {
 281                 printk(KERN_INFO "NAND: Unable to find configuration "
 282                                  "in GPMC\n ");
 283                 return;
 284         }
 285
 286         if (nandcs < GPMC_CS_NUM) {
 287                 omap3beagle_nand_data.cs = nandcs;
 288                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 289                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 290                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 291
 292                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 293                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 294                         printk(KERN_ERR "Unable to register NAND device\n");
 295         }
 296 }
 297
 298 static void __init omap3_beagle_init(void)
 299 {
 300         omap3_beagle_i2c_init();
 301         platform_add_devices(omap3_beagle_devices,
 302                         ARRAY_SIZE(omap3_beagle_devices));
 303         omap_board_config = omap3_beagle_config;
 304         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 305         omap_serial_init();
 306
 307         omap_cfg_reg(AH8_34XX_GPIO29);
 308         mmc[0].gpio_cd = gpio + 0;
 309         twl4030_mmc_init(mmc);
 310
 311         omap_cfg_reg(J25_34XX_GPIO170);
 312         gpio_request(170, "DVI_nPD");
 313         /* REVISIT leave DVI powered down until it's needed ... */
 314         gpio_direction_output(170, true);
 315
 316         omap3beagle_flash_init();
 317 }
 318
 319 static void __init omap3_beagle_map_io(void)
 320 {
 321         omap2_set_globals_343x();
 322         omap2_map_common_io();
 323 }
 324
 325 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 326         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 327         .phys_io        = 0x48000000,
 328         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 329         .boot_params    = 0x80000100,
 330         .map_io         = omap3_beagle_map_io,
 331         .init_irq       = omap3_beagle_init_irq,
 332         .init_machine   = omap3_beagle_init,
 333         .timer          = &omap_timer,
 334 MACHINE_END