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/i2c/twl4030.h>
  28
  29 #include <linux/mtd/mtd.h>
  30 #include <linux/mtd/partitions.h>
  31 #include <linux/mtd/nand.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/usb-musb.h>
  41 #include <mach/usb-ehci.h>
  42 #include <mach/hsmmc.h>
  43 #include <mach/common.h>
  44 #include <mach/gpmc.h>
  45 #include <mach/nand.h>
  46 #include <mach/mux.h>
  47
  48
  49 #define GPMC_CS0_BASE  0x60
  50 #define GPMC_CS_SIZE   0x30
  51
  52 #define NAND_BLOCK_SIZE         SZ_128K
  53
  54 static struct mtd_partition omap3beagle_nand_partitions[] = {
  55         /* All the partition sizes are listed in terms of NAND block size */
  56         {
  57                 .name           = "X-Loader",
  58                 .offset         = 0,
  59                 .size           = 4 * NAND_BLOCK_SIZE,
  60                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  61         },
  62         {
  63                 .name           = "U-Boot",
  64                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  65                 .size           = 15 * NAND_BLOCK_SIZE,
  66                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  67         },
  68         {
  69                 .name           = "U-Boot Env",
  70                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  71                 .size           = 1 * NAND_BLOCK_SIZE,
  72         },
  73         {
  74                 .name           = "Kernel",
  75                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  76                 .size           = 32 * NAND_BLOCK_SIZE,
  77         },
  78         {
  79                 .name           = "File System",
  80                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  81                 .size           = MTDPART_SIZ_FULL,
  82         },
  83 };
  84
  85 static struct omap_nand_platform_data omap3beagle_nand_data = {
  86         .options        = NAND_BUSWIDTH_16,
  87         .parts          = omap3beagle_nand_partitions,
  88         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  89         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  90         .nand_setup     = NULL,
  91         .dev_ready      = NULL,
  92 };
  93
  94 static struct resource omap3beagle_nand_resource = {
  95         .flags          = IORESOURCE_MEM,
  96 };
  97
  98 static struct platform_device omap3beagle_nand_device = {
  99         .name           = "omap2-nand",
 100         .id             = -1,
 101         .dev            = {
 102                 .platform_data  = &omap3beagle_nand_data,
 103         },
 104         .num_resources  = 1,
 105         .resource       = &omap3beagle_nand_resource,
 106 };
 107
 108 #include "sdram-micron-mt46h32m32lf-6.h"
 109
 110 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 111         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 112 };
 113
 114 static struct twl4030_usb_data beagle_usb_data = {
 115         .usb_mode       = T2_USB_MODE_ULPI,
 116 };
 117
 118 static struct gpio_led gpio_leds[];
 119
 120 static int beagle_twl_gpio_setup(struct device *dev,
 121                 unsigned gpio, unsigned ngpio)
 122 {
 123         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 124
 125         /* REVISIT: need ehci-omap hooks for external VBUS
 126          * power switch and overcurrent detect
 127          */
 128
 129         gpio_request(gpio + 1, "EHCI_nOC");
 130         gpio_direction_input(gpio + 1);
 131
 132         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 133         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 134         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 135
 136         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 137         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 138
 139         return 0;
 140 }
 141
 142 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 143         .gpio_base      = OMAP_MAX_GPIO_LINES,
 144         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 145         .irq_end        = TWL4030_GPIO_IRQ_END,
 146         .use_leds       = true,
 147         .pullups        = BIT(1),
 148         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 149                                 | BIT(15) | BIT(16) | BIT(17),
 150         .setup          = beagle_twl_gpio_setup,
 151 };
 152
 153 static struct twl4030_platform_data beagle_twldata = {
 154         .irq_base       = TWL4030_IRQ_BASE,
 155         .irq_end        = TWL4030_IRQ_END,
 156
 157         /* platform_data for children goes here */
 158         .usb            = &beagle_usb_data,
 159         .gpio           = &beagle_gpio_data,
 160 };
 161
 162 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 163         {
 164                 I2C_BOARD_INFO("twl4030", 0x48),
 165                 .flags = I2C_CLIENT_WAKE,
 166                 .irq = INT_34XX_SYS_NIRQ,
 167                 .platform_data = &beagle_twldata,
 168         },
 169 };
 170
 171 static int __init omap3_beagle_i2c_init(void)
 172 {
 173         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 174                         ARRAY_SIZE(beagle_i2c_boardinfo));
 175 #ifdef CONFIG_I2C2_OMAP_BEAGLE
 176         omap_register_i2c_bus(2, 400, NULL, 0);
 177 #endif
 178         omap_register_i2c_bus(3, 400, NULL, 0);
 179         return 0;
 180 }
 181
 182 static void __init omap3_beagle_init_irq(void)
 183 {
 184         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 185         omap_init_irq();
 186         omap_gpio_init();
 187 }
 188
 189 static struct platform_device omap3_beagle_lcd_device = {
 190         .name           = "omap3beagle_lcd",
 191         .id             = -1,
 192 };
 193
 194 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 195         .ctrl_name      = "internal",
 196 };
 197
 198 static struct gpio_led gpio_leds[] = {
 199         {
 200                 .name                   = "beagleboard::usr0",
 201                 .default_trigger        = "heartbeat",
 202                 .gpio                   = 150,
 203         },
 204         {
 205                 .name                   = "beagleboard::usr1",
 206                 .default_trigger        = "mmc0",
 207                 .gpio                   = 149,
 208         },
 209         {
 210                 .name                   = "beagleboard::pmu_stat",
 211                 .gpio                   = -EINVAL,      /* gets replaced */
 212                 .active_low             = true,
 213         },
 214 };
 215
 216 static struct gpio_led_platform_data gpio_led_info = {
 217         .leds           = gpio_leds,
 218         .num_leds       = ARRAY_SIZE(gpio_leds),
 219 };
 220
 221 static struct platform_device leds_gpio = {
 222         .name   = "leds-gpio",
 223         .id     = -1,
 224         .dev    = {
 225                 .platform_data  = &gpio_led_info,
 226         },
 227 };
 228
 229 static struct gpio_keys_button gpio_buttons[] = {
 230         {
 231                 .code                   = BTN_EXTRA,
 232                 .gpio                   = 7,
 233                 .desc                   = "user",
 234                 .wakeup                 = 1,
 235         },
 236 };
 237
 238 static struct gpio_keys_platform_data gpio_key_info = {
 239         .buttons        = gpio_buttons,
 240         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 241 };
 242
 243 static struct platform_device keys_gpio = {
 244         .name   = "gpio-keys",
 245         .id     = -1,
 246         .dev    = {
 247                 .platform_data  = &gpio_key_info,
 248         },
 249 };
 250
 251 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 252         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 253         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 254 };
 255
 256 static struct platform_device *omap3_beagle_devices[] __initdata = {
 257         &omap3_beagle_lcd_device,
 258         &leds_gpio,
 259         &keys_gpio,
 260 };
 261
 262 static void __init omap3beagle_flash_init(void)
 263 {
 264         u8 cs = 0;
 265         u8 nandcs = GPMC_CS_NUM + 1;
 266
 267         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 268
 269         /* find out the chip-select on which NAND exists */
 270         while (cs < GPMC_CS_NUM) {
 271                 u32 ret = 0;
 272                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 273
 274                 if ((ret & 0xC00) == 0x800) {
 275                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 276                         if (nandcs > GPMC_CS_NUM)
 277                                 nandcs = cs;
 278                 }
 279                 cs++;
 280         }
 281
 282         if (nandcs > GPMC_CS_NUM) {
 283                 printk(KERN_INFO "NAND: Unable to find configuration "
 284                                  "in GPMC\n ");
 285                 return;
 286         }
 287
 288         if (nandcs < GPMC_CS_NUM) {
 289                 omap3beagle_nand_data.cs = nandcs;
 290                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 291                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 292                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 293
 294                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 295                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 296                         printk(KERN_ERR "Unable to register NAND device\n");
 297         }
 298 }
 299
 300 static void __init omap3_beagle_init(void)
 301 {
 302         omap3_beagle_i2c_init();
 303         platform_add_devices(omap3_beagle_devices,
 304                         ARRAY_SIZE(omap3_beagle_devices));
 305         omap_board_config = omap3_beagle_config;
 306         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 307         omap_serial_init();
 308
 309         omap_cfg_reg(AH8_34XX_GPIO29);
 310         gpio_request(29, "mmc0_wp");
 311         gpio_direction_input(29);
 312         hsmmc_init();
 313
 314         omap_cfg_reg(J25_34XX_GPIO170);
 315         gpio_request(170, "DVI_nPD");
 316         /* REVISIT leave DVI powered down until it's needed ... */
 317         gpio_direction_output(170, true);
 318
 319         usb_musb_init();
 320         usb_ehci_init();
 321         omap3beagle_flash_init();
 322 }
 323
 324 static void __init omap3_beagle_map_io(void)
 325 {
 326         omap2_set_globals_343x();
 327         omap2_map_common_io();
 328 }
 329
 330 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 331         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 332         .phys_io        = 0x48000000,
 333         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 334         .boot_params    = 0x80000100,
 335         .map_io         = omap3_beagle_map_io,
 336         .init_irq       = omap3_beagle_init_irq,
 337         .init_machine   = omap3_beagle_init,
 338         .timer          = &omap_timer,
 339 MACHINE_END