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