kernel/2.6.29.6-aldebaran-rt/arch/arm/mach-omap2/board-overo.c

   1 /*
   2  * board-overo.c (Gumstix Overo)
   3  *
   4  * Initial code: Steve Sakoman <steve@sakoman.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/clk.h>
  23 #include <linux/delay.h>
  24 #include <linux/err.h>
  25 #include <linux/init.h>
  26 #include <linux/io.h>
  27 #include <linux/kernel.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/i2c/twl4030.h>
  30
  31 #include <linux/mtd/mtd.h>
  32 #include <linux/mtd/nand.h>
  33 #include <linux/mtd/partitions.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/flash.h>
  38 #include <asm/mach/map.h>
  39
  40 #include <mach/board-overo.h>
  41 #include <mach/board.h>
  42 #include <mach/common.h>
  43 #include <mach/gpio.h>
  44 #include <mach/gpmc.h>
  45 #include <mach/hardware.h>
  46 #include <mach/nand.h>
  47
  48 #include "mmc-twl4030.h"
  49
  50 #define NAND_BLOCK_SIZE SZ_128K
  51 #define GPMC_CS0_BASE  0x60
  52 #define GPMC_CS_SIZE   0x30
  53
  54 static struct mtd_partition overo_nand_partitions[] = {
  55         {
  56                 .name           = "xloader",
  57                 .offset         = 0,                    /* Offset = 0x00000 */
  58                 .size           = 4 * NAND_BLOCK_SIZE,
  59                 .mask_flags     = MTD_WRITEABLE
  60         },
  61         {
  62                 .name           = "uboot",
  63                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  64                 .size           = 14 * NAND_BLOCK_SIZE,
  65         },
  66         {
  67                 .name           = "uboot environment",
  68                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
  69                 .size           = 2 * NAND_BLOCK_SIZE,
  70         },
  71         {
  72                 .name           = "linux",
  73                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  74                 .size           = 32 * NAND_BLOCK_SIZE,
  75         },
  76         {
  77                 .name           = "rootfs",
  78                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  79                 .size           = MTDPART_SIZ_FULL,
  80         },
  81 };
  82
  83 static struct omap_nand_platform_data overo_nand_data = {
  84         .parts = overo_nand_partitions,
  85         .nr_parts = ARRAY_SIZE(overo_nand_partitions),
  86         .dma_channel = -1,      /* disable DMA in OMAP NAND driver */
  87 };
  88
  89 static struct resource overo_nand_resource = {
  90         .flags          = IORESOURCE_MEM,
  91 };
  92
  93 static struct platform_device overo_nand_device = {
  94         .name           = "omap2-nand",
  95         .id             = -1,
  96         .dev            = {
  97                 .platform_data  = &overo_nand_data,
  98         },
  99         .num_resources  = 1,
 100         .resource       = &overo_nand_resource,
 101 };
 102
 103
 104 static void __init overo_flash_init(void)
 105 {
 106         u8 cs = 0;
 107         u8 nandcs = GPMC_CS_NUM + 1;
 108
 109         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 110
 111         /* find out the chip-select on which NAND exists */
 112         while (cs < GPMC_CS_NUM) {
 113                 u32 ret = 0;
 114                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 115
 116                 if ((ret & 0xC00) == 0x800) {
 117                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 118                         if (nandcs > GPMC_CS_NUM)
 119                                 nandcs = cs;
 120                 }
 121                 cs++;
 122         }
 123
 124         if (nandcs > GPMC_CS_NUM) {
 125                 printk(KERN_INFO "NAND: Unable to find configuration "
 126                                  "in GPMC\n ");
 127                 return;
 128         }
 129
 130         if (nandcs < GPMC_CS_NUM) {
 131                 overo_nand_data.cs = nandcs;
 132                 overo_nand_data.gpmc_cs_baseaddr = (void *)
 133                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 134                 overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 135
 136                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 137                 if (platform_device_register(&overo_nand_device) < 0)
 138                         printk(KERN_ERR "Unable to register NAND device\n");
 139         }
 140 }
 141 static struct omap_uart_config overo_uart_config __initdata = {
 142         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 143 };
 144
 145 static struct twl4030_gpio_platform_data overo_gpio_data = {
 146         .gpio_base      = OMAP_MAX_GPIO_LINES,
 147         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 148         .irq_end        = TWL4030_GPIO_IRQ_END,
 149 };
 150
 151 static struct twl4030_platform_data overo_twldata = {
 152         .irq_base       = TWL4030_IRQ_BASE,
 153         .irq_end        = TWL4030_IRQ_END,
 154         .gpio           = &overo_gpio_data,
 155 };
 156
 157 static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
 158         {
 159                 I2C_BOARD_INFO("twl4030", 0x48),
 160                 .flags = I2C_CLIENT_WAKE,
 161                 .irq = INT_34XX_SYS_NIRQ,
 162                 .platform_data = &overo_twldata,
 163         },
 164 };
 165
 166 static int __init overo_i2c_init(void)
 167 {
 168         omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
 169                         ARRAY_SIZE(overo_i2c_boardinfo));
 170         /* i2c2 pins are used for gpio */
 171         omap_register_i2c_bus(3, 400, NULL, 0);
 172         return 0;
 173 }
 174
 175 static void __init overo_init_irq(void)
 176 {
 177         omap2_init_common_hw();
 178         omap_init_irq();
 179         omap_gpio_init();
 180 }
 181
 182 static struct platform_device overo_lcd_device = {
 183         .name           = "overo_lcd",
 184         .id             = -1,
 185 };
 186
 187 static struct omap_lcd_config overo_lcd_config __initdata = {
 188         .ctrl_name      = "internal",
 189 };
 190
 191 static struct omap_board_config_kernel overo_config[] __initdata = {
 192         { OMAP_TAG_UART,        &overo_uart_config },
 193         { OMAP_TAG_LCD,         &overo_lcd_config },
 194 };
 195
 196 static struct platform_device *overo_devices[] __initdata = {
 197         &overo_lcd_device,
 198 };
 199
 200 static struct twl4030_hsmmc_info mmc[] __initdata = {
 201         {
 202                 .mmc            = 1,
 203                 .wires          = 4,
 204                 .gpio_cd        = -EINVAL,
 205                 .gpio_wp        = -EINVAL,
 206         },
 207         {
 208                 .mmc            = 2,
 209                 .wires          = 4,
 210                 .gpio_cd        = -EINVAL,
 211                 .gpio_wp        = -EINVAL,
 212         },
 213         {}      /* Terminator */
 214 };
 215
 216 static void __init overo_init(void)
 217 {
 218         overo_i2c_init();
 219         platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
 220         omap_board_config = overo_config;
 221         omap_board_config_size = ARRAY_SIZE(overo_config);
 222         omap_serial_init();
 223         twl4030_mmc_init(mmc);
 224         overo_flash_init();
 225
 226         if ((gpio_request(OVERO_GPIO_W2W_NRESET,
 227                           "OVERO_GPIO_W2W_NRESET") == 0) &&
 228             (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
 229                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 230                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 231                 udelay(10);
 232                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 233         } else {
 234                 printk(KERN_ERR "could not obtain gpio for "
 235                                         "OVERO_GPIO_W2W_NRESET\n");
 236         }
 237
 238         if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
 239             (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
 240                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 241         else
 242                 printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
 243
 244         if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 245             (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 246                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 247                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 248                 mdelay(6);
 249                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 250         } else {
 251                 printk(KERN_ERR "could not obtain gpio for "
 252                                         "OVERO_GPIO_BT_NRESET\n");
 253         }
 254
 255         if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
 256             (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
 257                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 258         else
 259                 printk(KERN_ERR "could not obtain gpio for "
 260                                         "OVERO_GPIO_USBH_CPEN\n");
 261
 262         if ((gpio_request(OVERO_GPIO_USBH_NRESET,
 263                           "OVERO_GPIO_USBH_NRESET") == 0) &&
 264             (gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
 265                 gpio_export(OVERO_GPIO_USBH_NRESET, 0);
 266         else
 267                 printk(KERN_ERR "could not obtain gpio for "
 268                                         "OVERO_GPIO_USBH_NRESET\n");
 269 }
 270
 271 static void __init overo_map_io(void)
 272 {
 273         omap2_set_globals_343x();
 274         omap2_map_common_io();
 275 }
 276
 277 MACHINE_START(OVERO, "Gumstix Overo")
 278         .phys_io        = 0x48000000,
 279         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 280         .boot_params    = 0x80000100,
 281         .map_io         = overo_map_io,
 282         .init_irq       = overo_init_irq,
 283         .init_machine   = overo_init,
 284         .timer          = &omap_timer,
 285 MACHINE_END