release/src-rt-6.x/linux/linux-2.6/arch/arm/mach-at91/board-sam9261ek.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-sam9261ek.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2006 Atmel
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/init.h>
  24 #include <linux/mm.h>
  25 #include <linux/module.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/spi/ads7846.h>
  29 #include <linux/dm9000.h>
  30
  31 #include <asm/hardware.h>
  32 #include <asm/setup.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/irq.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/irq.h>
  39
  40 #include <asm/arch/board.h>
  41 #include <asm/arch/gpio.h>
  42 #include <asm/arch/at91sam926x_mc.h>
  43
  44 #include "generic.h"
  45
  46
  47 /*
  48  * Serial port configuration.
  49  *    0 .. 2 = USART0 .. USART2
  50  *    3      = DBGU
  51  */
  52 static struct at91_uart_config __initdata ek_uart_config = {
  53         .console_tty    = 0,                            /* ttyS0 */
  54         .nr_tty         = 1,
  55         .tty_map        = { 3, -1, -1, -1 }             /* ttyS0, ..., ttyS3 */
  56 };
  57
  58 static void __init ek_map_io(void)
  59 {
  60         /* Initialize processor: 18.432 MHz crystal */
  61         at91sam9261_initialize(18432000);
  62
  63         /* Setup the LEDs */
  64         at91_init_leds(AT91_PIN_PA13, AT91_PIN_PA14);
  65
  66         /* Setup the serial ports and console */
  67         at91_init_serial(&ek_uart_config);
  68 }
  69
  70 static void __init ek_init_irq(void)
  71 {
  72         at91sam9261_init_interrupts(NULL);
  73 }
  74
  75
  76 /*
  77  * DM9000 ethernet device
  78  */
  79 #if defined(CONFIG_DM9000)
  80 static struct resource at91sam9261_dm9000_resource[] = {
  81         [0] = {
  82                 .start  = AT91_CHIPSELECT_2,
  83                 .end    = AT91_CHIPSELECT_2 + 3,
  84                 .flags  = IORESOURCE_MEM
  85         },
  86         [1] = {
  87                 .start  = AT91_CHIPSELECT_2 + 0x44,
  88                 .end    = AT91_CHIPSELECT_2 + 0xFF,
  89                 .flags  = IORESOURCE_MEM
  90         },
  91         [2] = {
  92                 .start  = AT91_PIN_PC11,
  93                 .end    = AT91_PIN_PC11,
  94                 .flags  = IORESOURCE_IRQ
  95         }
  96 };
  97
  98 static struct dm9000_plat_data dm9000_platdata = {
  99         .flags          = DM9000_PLATF_16BITONLY,
 100 };
 101
 102 static struct platform_device at91sam9261_dm9000_device = {
 103         .name           = "dm9000",
 104         .id             = 0,
 105         .num_resources  = ARRAY_SIZE(at91sam9261_dm9000_resource),
 106         .resource       = at91sam9261_dm9000_resource,
 107         .dev            = {
 108                 .platform_data  = &dm9000_platdata,
 109         }
 110 };
 111
 112 static void __init ek_add_device_dm9000(void)
 113 {
 114         /*
 115          * Configure Chip-Select 2 on SMC for the DM9000.
 116          * Note: These timings were calculated for MASTER_CLOCK = 100000000
 117          *  according to the DM9000 timings.
 118          */
 119         at91_sys_write(AT91_SMC_SETUP(2), AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0) | AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0));
 120         at91_sys_write(AT91_SMC_PULSE(2), AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(8) | AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(8));
 121         at91_sys_write(AT91_SMC_CYCLE(2), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
 122         at91_sys_write(AT91_SMC_MODE(2), AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
 123
 124         /* Configure Reset signal as output */
 125         at91_set_gpio_output(AT91_PIN_PC10, 0);
 126
 127         /* Configure Interrupt pin as input, no pull-up */
 128         at91_set_gpio_input(AT91_PIN_PC11, 0);
 129
 130         platform_device_register(&at91sam9261_dm9000_device);
 131 }
 132 #else
 133 static void __init ek_add_device_dm9000(void) {}
 134 #endif /* CONFIG_DM9000 */
 135
 136
 137 /*
 138  * USB Host Port
 139  */
 140 static struct at91_usbh_data __initdata ek_usbh_data = {
 141         .ports          = 2,
 142 };
 143
 144
 145 /*
 146  * USB Device Port
 147  */
 148 static struct at91_udc_data __initdata ek_udc_data = {
 149         .vbus_pin       = AT91_PIN_PB29,
 150         .pullup_pin     = 0,            /* pull-up driven by UDC */
 151 };
 152
 153
 154 /*
 155  * MCI (SD/MMC)
 156  */
 157 static struct at91_mmc_data __initdata ek_mmc_data = {
 158         .wire4          = 1,
 159 //      .det_pin        = ... not connected
 160 //      .wp_pin         = ... not connected
 161 //      .vcc_pin        = ... not connected
 162 };
 163
 164
 165 /*
 166  * NAND flash
 167  */
 168 static struct mtd_partition __initdata ek_nand_partition[] = {
 169         {
 170                 .name   = "Partition 1",
 171                 .offset = 0,
 172                 .size   = 256 * 1024,
 173         },
 174         {
 175                 .name   = "Partition 2",
 176                 .offset = 256 * 1024 ,
 177                 .size   = MTDPART_SIZ_FULL,
 178         },
 179 };
 180
 181 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 182 {
 183         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 184         return ek_nand_partition;
 185 }
 186
 187 static struct at91_nand_data __initdata ek_nand_data = {
 188         .ale            = 22,
 189         .cle            = 21,
 190 //      .det_pin        = ... not connected
 191         .rdy_pin        = AT91_PIN_PC15,
 192         .enable_pin     = AT91_PIN_PC14,
 193         .partition_info = nand_partitions,
 194 #if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
 195         .bus_width_16   = 1,
 196 #else
 197         .bus_width_16   = 0,
 198 #endif
 199 };
 200
 201 /*
 202  * ADS7846 Touchscreen
 203  */
 204 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 205
 206 static int ads7843_pendown_state(void)
 207 {
 208         return !at91_get_gpio_value(AT91_PIN_PC2);      /* Touchscreen PENIRQ */
 209 }
 210
 211 static struct ads7846_platform_data ads_info = {
 212         .model                  = 7843,
 213         .x_min                  = 150,
 214         .x_max                  = 3830,
 215         .y_min                  = 190,
 216         .y_max                  = 3830,
 217         .vref_delay_usecs       = 100,
 218         .x_plate_ohms           = 450,
 219         .y_plate_ohms           = 250,
 220         .pressure_max           = 15000,
 221         .debounce_max           = 1,
 222         .debounce_rep           = 0,
 223         .debounce_tol           = (~0),
 224         .get_pendown_state      = ads7843_pendown_state,
 225 };
 226
 227 static void __init ek_add_device_ts(void)
 228 {
 229         at91_set_B_periph(AT91_PIN_PC2, 1);     /* External IRQ0, with pullup */
 230         at91_set_gpio_input(AT91_PIN_PA11, 1);  /* Touchscreen BUSY signal */
 231 }
 232 #else
 233 static void __init ek_add_device_ts(void) {}
 234 #endif
 235
 236 /*
 237  * SPI devices
 238  */
 239 static struct spi_board_info ek_spi_devices[] = {
 240         {       /* DataFlash chip */
 241                 .modalias       = "mtd_dataflash",
 242                 .chip_select    = 0,
 243                 .max_speed_hz   = 15 * 1000 * 1000,
 244                 .bus_num        = 0,
 245         },
 246 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 247         {
 248                 .modalias       = "ads7846",
 249                 .chip_select    = 2,
 250                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 251                 .bus_num        = 0,
 252                 .platform_data  = &ads_info,
 253                 .irq            = AT91SAM9261_ID_IRQ0,
 254         },
 255 #endif
 256 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 257         {       /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
 258                 .modalias       = "mtd_dataflash",
 259                 .chip_select    = 3,
 260                 .max_speed_hz   = 15 * 1000 * 1000,
 261                 .bus_num        = 0,
 262         },
 263 #elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 264         {       /* AT73C213 DAC */
 265                 .modalias       = "at73c213",
 266                 .chip_select    = 3,
 267                 .max_speed_hz   = 10 * 1000 * 1000,
 268                 .bus_num        = 0,
 269         },
 270 #endif
 271 };
 272
 273
 274 static void __init ek_board_init(void)
 275 {
 276         /* Serial */
 277         at91_add_device_serial();
 278         /* USB Host */
 279         at91_add_device_usbh(&ek_usbh_data);
 280         /* USB Device */
 281         at91_add_device_udc(&ek_udc_data);
 282         /* I2C */
 283         at91_add_device_i2c();
 284         /* NAND */
 285         at91_add_device_nand(&ek_nand_data);
 286         /* DM9000 ethernet */
 287         ek_add_device_dm9000();
 288
 289         /* spi0 and mmc/sd share the same PIO pins */
 290 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 291         /* SPI */
 292         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 293         /* Touchscreen */
 294         ek_add_device_ts();
 295 #else
 296         /* MMC */
 297         at91_add_device_mmc(0, &ek_mmc_data);
 298 #endif
 299 }
 300
 301 MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
 302         /* Maintainer: Atmel */
 303         .phys_io        = AT91_BASE_SYS,
 304         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 305         .boot_params    = AT91_SDRAM_BASE + 0x100,
 306         .timer          = &at91sam926x_timer,
 307         .map_io         = ek_map_io,
 308         .init_irq       = ek_init_irq,
 309         .init_machine   = ek_board_init,
 310 MACHINE_END