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 serial ports and console */
  64         at91_init_serial(&ek_uart_config);
  65 }
  66
  67 static void __init ek_init_irq(void)
  68 {
  69         at91sam9261_init_interrupts(NULL);
  70 }
  71
  72
  73 /*
  74  * DM9000 ethernet device
  75  */
  76 #if defined(CONFIG_DM9000)
  77 static struct resource at91sam9261_dm9000_resource[] = {
  78         [0] = {
  79                 .start  = AT91_CHIPSELECT_2,
  80                 .end    = AT91_CHIPSELECT_2 + 3,
  81                 .flags  = IORESOURCE_MEM
  82         },
  83         [1] = {
  84                 .start  = AT91_CHIPSELECT_2 + 0x44,
  85                 .end    = AT91_CHIPSELECT_2 + 0xFF,
  86                 .flags  = IORESOURCE_MEM
  87         },
  88         [2] = {
  89                 .start  = AT91_PIN_PC11,
  90                 .end    = AT91_PIN_PC11,
  91                 .flags  = IORESOURCE_IRQ
  92         }
  93 };
  94
  95 static struct dm9000_plat_data dm9000_platdata = {
  96         .flags          = DM9000_PLATF_16BITONLY,
  97 };
  98
  99 static struct platform_device at91sam9261_dm9000_device = {
 100         .name           = "dm9000",
 101         .id             = 0,
 102         .num_resources  = ARRAY_SIZE(at91sam9261_dm9000_resource),
 103         .resource       = at91sam9261_dm9000_resource,
 104         .dev            = {
 105                 .platform_data  = &dm9000_platdata,
 106         }
 107 };
 108
 109 static void __init ek_add_device_dm9000(void)
 110 {
 111         /*
 112          * Configure Chip-Select 2 on SMC for the DM9000.
 113          * Note: These timings were calculated for MASTER_CLOCK = 100000000
 114          *  according to the DM9000 timings.
 115          */
 116         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));
 117         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));
 118         at91_sys_write(AT91_SMC_CYCLE(2), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
 119         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));
 120
 121         /* Configure Reset signal as output */
 122         at91_set_gpio_output(AT91_PIN_PC10, 0);
 123
 124         /* Configure Interrupt pin as input, no pull-up */
 125         at91_set_gpio_input(AT91_PIN_PC11, 0);
 126
 127         platform_device_register(&at91sam9261_dm9000_device);
 128 }
 129 #else
 130 static void __init ek_add_device_dm9000(void) {}
 131 #endif /* CONFIG_DM9000 */
 132
 133
 134 /*
 135  * USB Host Port
 136  */
 137 static struct at91_usbh_data __initdata ek_usbh_data = {
 138         .ports          = 2,
 139 };
 140
 141
 142 /*
 143  * USB Device Port
 144  */
 145 static struct at91_udc_data __initdata ek_udc_data = {
 146         .vbus_pin       = AT91_PIN_PB29,
 147         .pullup_pin     = 0,            /* pull-up driven by UDC */
 148 };
 149
 150
 151 /*
 152  * MCI (SD/MMC)
 153  */
 154 static struct at91_mmc_data __initdata ek_mmc_data = {
 155         .wire4          = 1,
 156 //      .det_pin        = ... not connected
 157 //      .wp_pin         = ... not connected
 158 //      .vcc_pin        = ... not connected
 159 };
 160
 161
 162 /*
 163  * NAND flash
 164  */
 165 static struct mtd_partition __initdata ek_nand_partition[] = {
 166         {
 167                 .name   = "Partition 1",
 168                 .offset = 0,
 169                 .size   = 256 * 1024,
 170         },
 171         {
 172                 .name   = "Partition 2",
 173                 .offset = 256 * 1024 ,
 174                 .size   = MTDPART_SIZ_FULL,
 175         },
 176 };
 177
 178 static struct mtd_partition *nand_partitions(int size, int *num_partitions)
 179 {
 180         *num_partitions = ARRAY_SIZE(ek_nand_partition);
 181         return ek_nand_partition;
 182 }
 183
 184 static struct at91_nand_data __initdata ek_nand_data = {
 185         .ale            = 22,
 186         .cle            = 21,
 187 //      .det_pin        = ... not connected
 188         .rdy_pin        = AT91_PIN_PC15,
 189         .enable_pin     = AT91_PIN_PC14,
 190         .partition_info = nand_partitions,
 191 #if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
 192         .bus_width_16   = 1,
 193 #else
 194         .bus_width_16   = 0,
 195 #endif
 196 };
 197
 198 /*
 199  * ADS7846 Touchscreen
 200  */
 201 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 202
 203 static int ads7843_pendown_state(void)
 204 {
 205         return !at91_get_gpio_value(AT91_PIN_PC2);      /* Touchscreen PENIRQ */
 206 }
 207
 208 static struct ads7846_platform_data ads_info = {
 209         .model                  = 7843,
 210         .x_min                  = 150,
 211         .x_max                  = 3830,
 212         .y_min                  = 190,
 213         .y_max                  = 3830,
 214         .vref_delay_usecs       = 100,
 215         .x_plate_ohms           = 450,
 216         .y_plate_ohms           = 250,
 217         .pressure_max           = 15000,
 218         .debounce_max           = 1,
 219         .debounce_rep           = 0,
 220         .debounce_tol           = (~0),
 221         .get_pendown_state      = ads7843_pendown_state,
 222 };
 223
 224 static void __init ek_add_device_ts(void)
 225 {
 226         at91_set_B_periph(AT91_PIN_PC2, 1);     /* External IRQ0, with pullup */
 227         at91_set_gpio_input(AT91_PIN_PA11, 1);  /* Touchscreen BUSY signal */
 228 }
 229 #else
 230 static void __init ek_add_device_ts(void) {}
 231 #endif
 232
 233 /*
 234  * SPI devices
 235  */
 236 static struct spi_board_info ek_spi_devices[] = {
 237         {       /* DataFlash chip */
 238                 .modalias       = "mtd_dataflash",
 239                 .chip_select    = 0,
 240                 .max_speed_hz   = 15 * 1000 * 1000,
 241                 .bus_num        = 0,
 242         },
 243 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 244         {
 245                 .modalias       = "ads7846",
 246                 .chip_select    = 2,
 247                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 248                 .bus_num        = 0,
 249                 .platform_data  = &ads_info,
 250                 .irq            = AT91SAM9261_ID_IRQ0,
 251         },
 252 #endif
 253 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 254         {       /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
 255                 .modalias       = "mtd_dataflash",
 256                 .chip_select    = 3,
 257                 .max_speed_hz   = 15 * 1000 * 1000,
 258                 .bus_num        = 0,
 259         },
 260 #elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
 261         {       /* AT73C213 DAC */
 262                 .modalias       = "at73c213",
 263                 .chip_select    = 3,
 264                 .max_speed_hz   = 10 * 1000 * 1000,
 265                 .bus_num        = 0,
 266         },
 267 #endif
 268 };
 269
 270
 271 static void __init ek_board_init(void)
 272 {
 273         /* Serial */
 274         at91_add_device_serial();
 275         /* USB Host */
 276         at91_add_device_usbh(&ek_usbh_data);
 277         /* USB Device */
 278         at91_add_device_udc(&ek_udc_data);
 279         /* I2C */
 280         at91_add_device_i2c();
 281         /* NAND */
 282         at91_add_device_nand(&ek_nand_data);
 283         /* DM9000 ethernet */
 284         ek_add_device_dm9000();
 285
 286         /* spi0 and mmc/sd share the same PIO pins */
 287 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 288         /* SPI */
 289         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
 290         /* Touchscreen */
 291         ek_add_device_ts();
 292 #else
 293         /* MMC */
 294         at91_add_device_mmc(0, &ek_mmc_data);
 295 #endif
 296 }
 297
 298 MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
 299         /* Maintainer: Atmel */
 300         .phys_io        = AT91_BASE_SYS,
 301         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 302         .boot_params    = AT91_SDRAM_BASE + 0x100,
 303         .timer          = &at91sam926x_timer,
 304         .map_io         = ek_map_io,
 305         .init_irq       = ek_init_irq,
 306         .init_machine   = ek_board_init,
 307 MACHINE_END