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/nand.h>
  47 #include <mach/usb.h>
  48 #include <mach/mcspi.h>
  49
  50 #include "sdram-micron-mt46h32m32lf-6.h"
  51 #include "mmc-twl4030.h"
  52
  53
  54 #define NAND_BLOCK_SIZE                 SZ_128K
  55 #define GPMC_CS0_BASE                   0x60
  56 #define GPMC_CS_SIZE                    0x30
  57
  58 #define OMAP3_PANDORA_TS_GPIO           94
  59
  60 static struct mtd_partition omap3pandora_nand_partitions[] = {
  61         {
  62                 .name           = "xloader",
  63                 .offset         = 0,                    /* Offset = 0x00000 */
  64                 .size           = 4 * NAND_BLOCK_SIZE,
  65                 .mask_flags     = MTD_WRITEABLE
  66         }, {
  67                 .name           = "uboot",
  68                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  69                 .size           = 14 * NAND_BLOCK_SIZE,
  70         }, {
  71                 .name           = "uboot environment",
  72                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
  73                 .size           = 2 * NAND_BLOCK_SIZE,
  74         }, {
  75                 .name           = "linux",
  76                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  77                 .size           = 32 * NAND_BLOCK_SIZE,
  78         }, {
  79                 .name           = "rootfs",
  80                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  81                 .size           = MTDPART_SIZ_FULL,
  82         },
  83 };
  84
  85 static struct omap_nand_platform_data omap3pandora_nand_data = {
  86         .parts          = omap3pandora_nand_partitions,
  87         .nr_parts       = ARRAY_SIZE(omap3pandora_nand_partitions),
  88         .dma_channel    = -1,   /* disable DMA in OMAP NAND driver */
  89 };
  90
  91 static struct resource omap3pandora_nand_resource[] = {
  92         {
  93                 .flags          = IORESOURCE_MEM,
  94         },
  95 };
  96
  97 static struct platform_device omap3pandora_nand_device = {
  98         .name           = "omap2-nand",
  99         .id             = -1,
 100         .dev            = {
 101                 .platform_data  = &omap3pandora_nand_data,
 102         },
 103         .num_resources  = ARRAY_SIZE(omap3pandora_nand_resource),
 104         .resource       = omap3pandora_nand_resource,
 105 };
 106
 107 static void __init omap3pandora_flash_init(void)
 108 {
 109         u8 cs = 0;
 110         u8 nandcs = GPMC_CS_NUM + 1;
 111
 112         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 113
 114         /* find out the chip-select on which NAND exists */
 115         while (cs < GPMC_CS_NUM) {
 116                 u32 ret = 0;
 117                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 118
 119                 if ((ret & 0xC00) == 0x800) {
 120                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 121                         if (nandcs > GPMC_CS_NUM)
 122                                 nandcs = cs;
 123                 }
 124                 cs++;
 125         }
 126
 127         if (nandcs > GPMC_CS_NUM) {
 128                 printk(KERN_INFO "NAND: Unable to find configuration "
 129                                  "in GPMC\n ");
 130                 return;
 131         }
 132
 133         if (nandcs < GPMC_CS_NUM) {
 134                 omap3pandora_nand_data.cs = nandcs;
 135                 omap3pandora_nand_data.gpmc_cs_baseaddr = (void *)
 136                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 137                 omap3pandora_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 138
 139                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 140                 if (platform_device_register(&omap3pandora_nand_device) < 0)
 141                         printk(KERN_ERR "Unable to register NAND device\n");
 142         }
 143 }
 144
 145 static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
 146         {
 147                 .mmc            = 1,
 148                 .wires          = 4,
 149                 .gpio_cd        = -EINVAL,
 150                 .gpio_wp        = 126,
 151                 .ext_clock      = 0,
 152         },
 153         {
 154                 .mmc            = 2,
 155                 .wires          = 4,
 156                 .gpio_cd        = -EINVAL,
 157                 .gpio_wp        = 127,
 158                 .ext_clock      = 1,
 159                 .transceiver    = true,
 160         },
 161         {}      /* Terminator */
 162 };
 163
 164 static struct omap_uart_config omap3pandora_uart_config __initdata = {
 165         .enabled_uarts  = (1 << 2), /* UART3 */
 166 };
 167
 168 static int omap3pandora_twl_gpio_setup(struct device *dev,
 169                 unsigned gpio, unsigned ngpio)
 170 {
 171         /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
 172         omap3pandora_mmc[0].gpio_cd = gpio + 0;
 173         omap3pandora_mmc[1].gpio_cd = gpio + 1;
 174         twl4030_mmc_init(omap3pandora_mmc);
 175
 176         return 0;
 177 }
 178
 179 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
 180         .gpio_base      = OMAP_MAX_GPIO_LINES,
 181         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 182         .irq_end        = TWL4030_GPIO_IRQ_END,
 183         .setup          = omap3pandora_twl_gpio_setup,
 184 };
 185
 186 static struct twl4030_usb_data omap3pandora_usb_data = {
 187         .usb_mode       = T2_USB_MODE_ULPI,
 188 };
 189
 190 static struct twl4030_platform_data omap3pandora_twldata = {
 191         .irq_base       = TWL4030_IRQ_BASE,
 192         .irq_end        = TWL4030_IRQ_END,
 193         .gpio           = &omap3pandora_gpio_data,
 194         .usb            = &omap3pandora_usb_data,
 195 };
 196
 197 static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
 198         {
 199                 I2C_BOARD_INFO("tps65950", 0x48),
 200                 .flags = I2C_CLIENT_WAKE,
 201                 .irq = INT_34XX_SYS_NIRQ,
 202                 .platform_data = &omap3pandora_twldata,
 203         },
 204 };
 205
 206 static int __init omap3pandora_i2c_init(void)
 207 {
 208         omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
 209                         ARRAY_SIZE(omap3pandora_i2c_boardinfo));
 210         /* i2c2 pins are not connected */
 211         omap_register_i2c_bus(3, 400, NULL, 0);
 212         return 0;
 213 }
 214
 215 static void __init omap3pandora_init_irq(void)
 216 {
 217         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 218         omap_init_irq();
 219         omap_gpio_init();
 220 }
 221
 222 static void __init omap3pandora_ads7846_init(void)
 223 {
 224         int gpio = OMAP3_PANDORA_TS_GPIO;
 225         int ret;
 226
 227         ret = gpio_request(gpio, "ads7846_pen_down");
 228         if (ret < 0) {
 229                 printk(KERN_ERR "Failed to request GPIO %d for "
 230                                 "ads7846 pen down IRQ\n", gpio);
 231                 return;
 232         }
 233
 234         gpio_direction_input(gpio);
 235 }
 236
 237 static int ads7846_get_pendown_state(void)
 238 {
 239         return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
 240 }
 241
 242 static struct ads7846_platform_data ads7846_config = {
 243         .x_max                  = 0x0fff,
 244         .y_max                  = 0x0fff,
 245         .x_plate_ohms           = 180,
 246         .pressure_max           = 255,
 247         .debounce_max           = 10,
 248         .debounce_tol           = 3,
 249         .debounce_rep           = 1,
 250         .get_pendown_state      = ads7846_get_pendown_state,
 251         .keep_vref_on           = 1,
 252 };
 253
 254 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 255         .turbo_mode     = 0,
 256         .single_channel = 1,    /* 0: slave, 1: master */
 257 };
 258
 259 static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
 260         {
 261                 .modalias               = "ads7846",
 262                 .bus_num                = 1,
 263                 .chip_select            = 0,
 264                 .max_speed_hz           = 1500000,
 265                 .controller_data        = &ads7846_mcspi_config,
 266                 .irq                    = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
 267                 .platform_data          = &ads7846_config,
 268         }
 269 };
 270
 271 static struct platform_device omap3pandora_lcd_device = {
 272         .name           = "pandora_lcd",
 273         .id             = -1,
 274 };
 275
 276 static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
 277         .ctrl_name      = "internal",
 278 };
 279
 280 static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
 281         { OMAP_TAG_UART,        &omap3pandora_uart_config },
 282         { OMAP_TAG_LCD,         &omap3pandora_lcd_config },
 283 };
 284
 285 static struct platform_device *omap3pandora_devices[] __initdata = {
 286         &omap3pandora_lcd_device,
 287 };
 288
 289 static void __init omap3pandora_init(void)
 290 {
 291         omap3pandora_i2c_init();
 292         platform_add_devices(omap3pandora_devices,
 293                         ARRAY_SIZE(omap3pandora_devices));
 294         omap_board_config = omap3pandora_config;
 295         omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
 296         omap_serial_init();
 297         spi_register_board_info(omap3pandora_spi_board_info,
 298                         ARRAY_SIZE(omap3pandora_spi_board_info));
 299         usb_musb_init();
 300         usb_ehci_init();
 301         omap3pandora_flash_init();
 302         omap3pandora_ads7846_init();
 303 }
 304
 305 static void __init omap3pandora_map_io(void)
 306 {
 307         omap2_set_globals_343x();
 308         omap2_map_common_io();
 309 }
 310
 311 MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
 312         .phys_io        = 0x48000000,
 313         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 314         .boot_params    = 0x80000100,
 315         .map_io         = omap3pandora_map_io,
 316         .init_irq       = omap3pandora_init_irq,
 317         .init_machine   = omap3pandora_init,
 318         .timer          = &omap_timer,
 319 MACHINE_END