arch/arm/mach-omap2/board-omap3pandora.c

   1 /*
   2  * board-omap3pandora.c (Pandora Handheld Console)
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  16  * 02110-1301 USA
  17  *
  18  */
  19
  20 #include <linux/clk.h>
  21 #include <linux/delay.h>
  22 #include <linux/err.h>
  23 #include <linux/init.h>
  24 #include <linux/io.h>
  25 #include <linux/kernel.h>
  26 #include <linux/platform_device.h>
  27
  28 #include <linux/spi/spi.h>
  29 #include <linux/spi/ads7846.h>
  30 #include <linux/i2c/twl4030.h>
  31
  32 #include <linux/mtd/mtd.h>
  33 #include <linux/mtd/nand.h>
  34 #include <linux/mtd/partitions.h>
  35
  36 #include <asm/mach-types.h>
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/flash.h>
  39 #include <asm/mach/map.h>
  40
  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/mmc.h>
  47 #include <mach/nand.h>
  48 #include <mach/usb-ehci.h>
  49 #include <mach/usb-musb.h>
  50 #include <mach/mcspi.h>
  51
  52 #include "sdram-micron-mt46h32m32lf-6.h"
  53 #include "mmc-twl4030.h"
  54
  55
  56 #define NAND_BLOCK_SIZE SZ_128K
  57 #define GPMC_CS0_BASE  0x60
  58 #define GPMC_CS_SIZE   0x30
  59
  60 #define OMAP3_PANDORA_TS_GPIO           94
  61
  62 static struct mtd_partition omap3pandora_nand_partitions[] = {
  63         {
  64                 .name           = "xloader",
  65                 .offset         = 0,                    /* Offset = 0x00000 */
  66                 .size           = 4 * NAND_BLOCK_SIZE,
  67                 .mask_flags     = MTD_WRITEABLE
  68         }, {
  69                 .name           = "uboot",
  70                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  71                 .size           = 14 * NAND_BLOCK_SIZE,
  72         }, {
  73                 .name           = "uboot environment",
  74                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
  75                 .size           = 2 * NAND_BLOCK_SIZE,
  76         }, {
  77                 .name           = "linux",
  78                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  79                 .size           = 32 * NAND_BLOCK_SIZE,
  80         }, {
  81                 .name           = "rootfs",
  82                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  83                 .size           = MTDPART_SIZ_FULL,
  84         },
  85 };
  86
  87 static struct omap_nand_platform_data omap3pandora_nand_data = {
  88         .parts          = omap3pandora_nand_partitions,
  89         .nr_parts       = ARRAY_SIZE(omap3pandora_nand_partitions),
  90         .dma_channel    = -1,   /* disable DMA in OMAP NAND driver */
  91 };
  92
  93 static struct resource omap3pandora_nand_resource[] = {
  94         {
  95                 .flags          = IORESOURCE_MEM,
  96         },
  97 };
  98
  99 static struct platform_device omap3pandora_nand_device = {
 100         .name           = "omap2-nand",
 101         .id             = -1,
 102         .dev            = {
 103                 .platform_data  = &omap3pandora_nand_data,
 104         },
 105         .num_resources  = ARRAY_SIZE(omap3pandora_nand_resource),
 106         .resource       = omap3pandora_nand_resource,
 107 };
 108
 109 static void __init omap3pandora_flash_init(void)
 110 {
 111         u8 cs = 0;
 112         u8 nandcs = GPMC_CS_NUM + 1;
 113
 114         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 115
 116         /* find out the chip-select on which NAND exists */
 117         while (cs < GPMC_CS_NUM) {
 118                 u32 ret = 0;
 119                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 120
 121                 if ((ret & 0xC00) == 0x800) {
 122                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 123                         if (nandcs > GPMC_CS_NUM)
 124                                 nandcs = cs;
 125                 }
 126                 cs++;
 127         }
 128
 129         if (nandcs > GPMC_CS_NUM) {
 130                 printk(KERN_INFO "NAND: Unable to find configuration "
 131                                  "in GPMC\n ");
 132                 return;
 133         }
 134
 135         if (nandcs < GPMC_CS_NUM) {
 136                 omap3pandora_nand_data.cs = nandcs;
 137                 omap3pandora_nand_data.gpmc_cs_baseaddr = (void *)
 138                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 139                 omap3pandora_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 140
 141                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 142                 if (platform_device_register(&omap3pandora_nand_device) < 0)
 143                         printk(KERN_ERR "Unable to register NAND device\n");
 144         }
 145 }
 146
 147 static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
 148         {
 149                 .mmc            = 1,
 150                 .wires          = 4,
 151                 .gpio_cd        = -EINVAL,
 152                 .gpio_wp        = 126,
 153                 .ext_clock      = 0,
 154         },
 155         {
 156                 .mmc            = 2,
 157                 .wires          = 4,
 158                 .gpio_cd        = -EINVAL,
 159                 .gpio_wp        = 127,
 160                 .ext_clock      = 1,
 161         },
 162         {}      /* Terminator */
 163 };
 164
 165 static struct omap_uart_config omap3pandora_uart_config __initdata = {
 166         .enabled_uarts  = (1 << 2), /* UART3 */
 167 };
 168
 169 static int omap3pandora_twl_gpio_setup(struct device *dev,
 170                 unsigned gpio, unsigned ngpio)
 171 {
 172         /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
 173         omap3pandora_mmc[0].gpio_cd = gpio + 0;
 174         omap3pandora_mmc[1].gpio_cd = gpio + 1;
 175         hsmmc_init(omap3pandora_mmc);
 176
 177         return 0;
 178 }
 179
 180 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
 181         .gpio_base      = OMAP_MAX_GPIO_LINES,
 182         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 183         .irq_end        = TWL4030_GPIO_IRQ_END,
 184         .setup          = omap3pandora_twl_gpio_setup,
 185 };
 186
 187 static struct twl4030_usb_data omap3pandora_usb_data = {
 188         .usb_mode       = T2_USB_MODE_ULPI,
 189 };
 190
 191 static struct twl4030_platform_data omap3pandora_twldata = {
 192         .irq_base       = TWL4030_IRQ_BASE,
 193         .irq_end        = TWL4030_IRQ_END,
 194         .gpio           = &omap3pandora_gpio_data,
 195         .usb            = &omap3pandora_usb_data,
 196 };
 197
 198 static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
 199         {
 200                 I2C_BOARD_INFO("tps65950", 0x48),
 201                 .flags = I2C_CLIENT_WAKE,
 202                 .irq = INT_34XX_SYS_NIRQ,
 203                 .platform_data = &omap3pandora_twldata,
 204         },
 205 };
 206
 207 static int __init omap3pandora_i2c_init(void)
 208 {
 209         omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
 210                         ARRAY_SIZE(omap3pandora_i2c_boardinfo));
 211         /* i2c2 pins are not connected */
 212         omap_register_i2c_bus(3, 400, NULL, 0);
 213         return 0;
 214 }
 215
 216 static void __init omap3pandora_init_irq(void)
 217 {
 218         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 219         omap_init_irq();
 220         omap_gpio_init();
 221 }
 222
 223 static void __init omap3pandora_ads7846_init(void)
 224 {
 225         int gpio = OMAP3_PANDORA_TS_GPIO;
 226         int ret;
 227
 228         ret = gpio_request(gpio, "ads7846_pen_down");
 229         if (ret < 0) {
 230                 printk(KERN_ERR "Failed to request GPIO %d for "
 231                                 "ads7846 pen down IRQ\n", gpio);
 232                 return;
 233         }
 234
 235         gpio_direction_input(gpio);
 236 }
 237
 238 static int ads7846_get_pendown_state(void)
 239 {
 240         return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
 241 }
 242
 243 static struct ads7846_platform_data ads7846_config = {
 244         .x_max                  = 0x0fff,
 245         .y_max                  = 0x0fff,
 246         .x_plate_ohms           = 180,
 247         .pressure_max           = 255,
 248         .debounce_max           = 10,
 249         .debounce_tol           = 3,
 250         .debounce_rep           = 1,
 251         .get_pendown_state      = ads7846_get_pendown_state,
 252         .keep_vref_on           = 1,
 253 };
 254
 255 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 256         .turbo_mode     = 0,
 257         .single_channel = 1,  /* 0: slave, 1: master */
 258 };
 259
 260 static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
 261         {
 262                 .modalias               = "ads7846",
 263                 .bus_num                = 1,
 264                 .chip_select            = 0,
 265                 .max_speed_hz           = 1500000,
 266                 .controller_data        = &ads7846_mcspi_config,
 267                 .irq                    = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
 268                 .platform_data          = &ads7846_config,
 269         }
 270 };
 271
 272 static struct platform_device omap3pandora_lcd_device = {
 273         .name           = "pandora_lcd",
 274         .id             = -1,
 275 };
 276
 277 static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
 278         .ctrl_name      = "internal",
 279 };
 280
 281 static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
 282         { OMAP_TAG_UART,        &omap3pandora_uart_config },
 283         { OMAP_TAG_LCD,         &omap3pandora_lcd_config },
 284 };
 285
 286 static struct platform_device *omap3pandora_devices[] __initdata = {
 287         &omap3pandora_lcd_device,
 288 };
 289
 290 static void __init omap3pandora_init(void)
 291 {
 292         omap3pandora_i2c_init();
 293         platform_add_devices(omap3pandora_devices,
 294                         ARRAY_SIZE(omap3pandora_devices));
 295         omap_board_config = omap3pandora_config;
 296         omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
 297         omap_serial_init();
 298         spi_register_board_info(omap3pandora_spi_board_info,
 299                         ARRAY_SIZE(omap3pandora_spi_board_info));
 300         usb_musb_init();
 301         usb_ehci_init();
 302         omap3pandora_flash_init();
 303         omap3pandora_ads7846_init();
 304 }
 305
 306 static void __init omap3pandora_map_io(void)
 307 {
 308         omap2_set_globals_343x();
 309         omap2_map_common_io();
 310 }
 311
 312 MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
 313         .phys_io        = 0x48000000,
 314         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 315         .boot_params    = 0x80000100,
 316         .map_io         = omap3pandora_map_io,
 317         .init_irq       = omap3pandora_init_irq,
 318         .init_machine   = omap3pandora_init,
 319         .timer          = &omap_timer,
 320 MACHINE_END