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