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 #include <mach/timer-gp.h>
  46
  47 #include "mmc-twl4030.h"
  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 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 109         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 110 };
 111
 112 static struct twl4030_hsmmc_info mmc[] = {
 113         {
 114                 .mmc            = 1,
 115                 .wires          = 8,
 116                 .gpio_wp        = 29,
 117         },
 118         {}      /* Terminator */
 119 };
 120
 121 static struct gpio_led gpio_leds[];
 122
 123 static int beagle_twl_gpio_setup(struct device *dev,
 124                 unsigned gpio, unsigned ngpio)
 125 {
 126         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 127         omap_cfg_reg(AH8_34XX_GPIO29);
 128         mmc[0].gpio_cd = gpio + 0;
 129         twl4030_mmc_init(mmc);
 130
 131         /* REVISIT: need ehci-omap hooks for external VBUS
 132          * power switch and overcurrent detect
 133          */
 134
 135         gpio_request(gpio + 1, "EHCI_nOC");
 136         gpio_direction_input(gpio + 1);
 137
 138         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 139         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 140         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 141
 142         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 143         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 144
 145         return 0;
 146 }
 147
 148 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 149         .gpio_base      = OMAP_MAX_GPIO_LINES,
 150         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 151         .irq_end        = TWL4030_GPIO_IRQ_END,
 152         .use_leds       = true,
 153         .pullups        = BIT(1),
 154         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 155                                 | BIT(15) | BIT(16) | BIT(17),
 156         .setup          = beagle_twl_gpio_setup,
 157 };
 158
 159 static struct twl4030_platform_data beagle_twldata = {
 160         .irq_base       = TWL4030_IRQ_BASE,
 161         .irq_end        = TWL4030_IRQ_END,
 162
 163         /* platform_data for children goes here */
 164         .gpio           = &beagle_gpio_data,
 165 };
 166
 167 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 168         {
 169                 I2C_BOARD_INFO("twl4030", 0x48),
 170                 .flags = I2C_CLIENT_WAKE,
 171                 .irq = INT_34XX_SYS_NIRQ,
 172                 .platform_data = &beagle_twldata,
 173         },
 174 };
 175
 176 static int __init omap3_beagle_i2c_init(void)
 177 {
 178         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 179                         ARRAY_SIZE(beagle_i2c_boardinfo));
 180         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 181          * projector don't work reliably with 400kHz */
 182         omap_register_i2c_bus(3, 100, NULL, 0);
 183         return 0;
 184 }
 185
 186 static void __init omap3_beagle_init_irq(void)
 187 {
 188         omap2_init_common_hw(NULL);
 189         omap_init_irq();
 190 #ifdef CONFIG_OMAP_32K_TIMER
 191         omap2_gp_clockevent_set_gptimer(12);
 192 #endif
 193         omap_gpio_init();
 194 }
 195
 196 static struct platform_device omap3_beagle_lcd_device = {
 197         .name           = "omap3beagle_lcd",
 198         .id             = -1,
 199 };
 200
 201 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 202         .ctrl_name      = "internal",
 203 };
 204
 205 static struct gpio_led gpio_leds[] = {
 206         {
 207                 .name                   = "beagleboard::usr0",
 208                 .default_trigger        = "heartbeat",
 209                 .gpio                   = 150,
 210         },
 211         {
 212                 .name                   = "beagleboard::usr1",
 213                 .default_trigger        = "mmc0",
 214                 .gpio                   = 149,
 215         },
 216         {
 217                 .name                   = "beagleboard::pmu_stat",
 218                 .gpio                   = -EINVAL,      /* gets replaced */
 219                 .active_low             = true,
 220         },
 221 };
 222
 223 static struct gpio_led_platform_data gpio_led_info = {
 224         .leds           = gpio_leds,
 225         .num_leds       = ARRAY_SIZE(gpio_leds),
 226 };
 227
 228 static struct platform_device leds_gpio = {
 229         .name   = "leds-gpio",
 230         .id     = -1,
 231         .dev    = {
 232                 .platform_data  = &gpio_led_info,
 233         },
 234 };
 235
 236 static struct gpio_keys_button gpio_buttons[] = {
 237         {
 238                 .code                   = BTN_EXTRA,
 239                 .gpio                   = 7,
 240                 .desc                   = "user",
 241                 .wakeup                 = 1,
 242         },
 243 };
 244
 245 static struct gpio_keys_platform_data gpio_key_info = {
 246         .buttons        = gpio_buttons,
 247         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 248 };
 249
 250 static struct platform_device keys_gpio = {
 251         .name   = "gpio-keys",
 252         .id     = -1,
 253         .dev    = {
 254                 .platform_data  = &gpio_key_info,
 255         },
 256 };
 257
 258 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 259         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 260         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 261 };
 262
 263 static struct platform_device *omap3_beagle_devices[] __initdata = {
 264         &omap3_beagle_lcd_device,
 265         &leds_gpio,
 266         &keys_gpio,
 267 };
 268
 269 static void __init omap3beagle_flash_init(void)
 270 {
 271         u8 cs = 0;
 272         u8 nandcs = GPMC_CS_NUM + 1;
 273
 274         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 275
 276         /* find out the chip-select on which NAND exists */
 277         while (cs < GPMC_CS_NUM) {
 278                 u32 ret = 0;
 279                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 280
 281                 if ((ret & 0xC00) == 0x800) {
 282                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 283                         if (nandcs > GPMC_CS_NUM)
 284                                 nandcs = cs;
 285                 }
 286                 cs++;
 287         }
 288
 289         if (nandcs > GPMC_CS_NUM) {
 290                 printk(KERN_INFO "NAND: Unable to find configuration "
 291                                  "in GPMC\n ");
 292                 return;
 293         }
 294
 295         if (nandcs < GPMC_CS_NUM) {
 296                 omap3beagle_nand_data.cs = nandcs;
 297                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 298                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 299                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 300
 301                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 302                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 303                         printk(KERN_ERR "Unable to register NAND device\n");
 304         }
 305 }
 306
 307 static void __init omap3_beagle_init(void)
 308 {
 309         omap3_beagle_i2c_init();
 310         platform_add_devices(omap3_beagle_devices,
 311                         ARRAY_SIZE(omap3_beagle_devices));
 312         omap_board_config = omap3_beagle_config;
 313         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 314         omap_serial_init();
 315
 316         omap_cfg_reg(J25_34XX_GPIO170);
 317         gpio_request(170, "DVI_nPD");
 318         /* REVISIT leave DVI powered down until it's needed ... */
 319         gpio_direction_output(170, true);
 320
 321         usb_musb_init();
 322         omap3beagle_flash_init();
 323 }
 324
 325 static void __init omap3_beagle_map_io(void)
 326 {
 327         omap2_set_globals_343x();
 328         omap2_map_common_io();
 329 }
 330
 331 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 332         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 333         .phys_io        = 0x48000000,
 334         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 335         .boot_params    = 0x80000100,
 336         .map_io         = omap3_beagle_map_io,
 337         .init_irq       = omap3_beagle_init_irq,
 338         .init_machine   = omap3_beagle_init,
 339         .timer          = &omap_timer,
 340 MACHINE_END