LXR linux/arch/arm/mach-at91/board-cap9adk.c

   1/*
   2 * linux/arch/arm/mach-at91/board-cap9adk.c
   3 *
   4 *  Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
   5 *  Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
   6 *  Copyright (C) 2005 SAN People
   7 *  Copyright (C) 2007 Atmel Corporation.
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License as published by
  11 * the Free Software Foundation; either version 2 of the License, or
  12 * (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 * GNU General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; if not, write to the Free Software
  21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22 */
  23
  24#include <linux/types.h>
  25#include <linux/init.h>
  26#include <linux/mm.h>
  27#include <linux/module.h>
  28#include <linux/platform_device.h>
  29#include <linux/spi/spi.h>
  30#include <linux/spi/ads7846.h>
  31#include <linux/fb.h>
  32#include <linux/mtd/physmap.h>
  33
  34#include <video/atmel_lcdc.h>
  35
  36#include <mach/hardware.h>
  37#include <asm/setup.h>
  38#include <asm/mach-types.h>
  39
  40#include <asm/mach/arch.h>
  41#include <asm/mach/map.h>
  42
  43#include <mach/board.h>
  44#include <mach/gpio.h>
  45#include <mach/at91cap9_matrix.h>
  46#include <mach/at91sam9_smc.h>
  47
  48#include "sam9_smc.h"
  49#include "generic.h"
  50
  51
  52static void __init cap9adk_map_io(void)
  53{
  54        /* Initialize processor: 12 MHz crystal */
  55        at91cap9_initialize(12000000);
  56
  57        /* Setup the LEDs: USER1 and USER2 LED for cpu/timer... */
  58        at91_init_leds(AT91_PIN_PA10, AT91_PIN_PA11);
  59        /* ... POWER LED always on */
  60        at91_set_gpio_output(AT91_PIN_PC29, 1);
  61
  62        /* Setup the serial ports and console */
  63        at91_register_uart(0, 0, 0);            /* DBGU = ttyS0 */
  64        at91_set_serial_console(0);
  65}
  66
  67static void __init cap9adk_init_irq(void)
  68{
  69        at91cap9_init_interrupts(NULL);
  70}
  71
  72
  73/*
  74 * USB Host port
  75 */
  76static struct at91_usbh_data __initdata cap9adk_usbh_data = {
  77        .ports          = 2,
  78};
  79
  80/*
  81 * USB HS Device port
  82 */
  83static struct usba_platform_data __initdata cap9adk_usba_udc_data = {
  84        .vbus_pin       = AT91_PIN_PB31,
  85};
  86
  87/*
  88 * ADS7846 Touchscreen
  89 */
  90#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  91static int ads7843_pendown_state(void)
  92{
  93        return !at91_get_gpio_value(AT91_PIN_PC4);      /* Touchscreen PENIRQ */
  94}
  95
  96static struct ads7846_platform_data ads_info = {
  97        .model                  = 7843,
  98        .x_min                  = 150,
  99        .x_max                  = 3830,
 100        .y_min                  = 190,
 101        .y_max                  = 3830,
 102        .vref_delay_usecs       = 100,
 103        .x_plate_ohms           = 450,
 104        .y_plate_ohms           = 250,
 105        .pressure_max           = 15000,
 106        .debounce_max           = 1,
 107        .debounce_rep           = 0,
 108        .debounce_tol           = (~0),
 109        .get_pendown_state      = ads7843_pendown_state,
 110};
 111
 112static void __init cap9adk_add_device_ts(void)
 113{
 114        at91_set_gpio_input(AT91_PIN_PC4, 1);   /* Touchscreen PENIRQ */
 115        at91_set_gpio_input(AT91_PIN_PC5, 1);   /* Touchscreen BUSY */
 116}
 117#else
 118static void __init cap9adk_add_device_ts(void) {}
 119#endif
 120
 121
 122/*
 123 * SPI devices.
 124 */
 125static struct spi_board_info cap9adk_spi_devices[] = {
 126#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 127        {       /* DataFlash card */
 128                .modalias       = "mtd_dataflash",
 129                .chip_select    = 0,
 130                .max_speed_hz   = 15 * 1000 * 1000,
 131                .bus_num        = 0,
 132        },
 133#endif
 134#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 135        {
 136                .modalias       = "ads7846",
 137                .chip_select    = 3,            /* can be 2 or 3, depending on J2 jumper */
 138                .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 139                .bus_num        = 0,
 140                .platform_data  = &ads_info,
 141                .irq            = AT91_PIN_PC4,
 142        },
 143#endif
 144};
 145
 146
 147/*
 148 * MCI (SD/MMC)
 149 */
 150static struct at91_mmc_data __initdata cap9adk_mmc_data = {
 151        .wire4          = 1,
 152//      .det_pin        = ... not connected
 153//      .wp_pin         = ... not connected
 154//      .vcc_pin        = ... not connected
 155};
 156
 157
 158/*
 159 * MACB Ethernet device
 160 */
 161static struct at91_eth_data __initdata cap9adk_macb_data = {
 162        .is_rmii        = 1,
 163};
 164
 165
 166/*
 167 * NAND flash
 168 */
 169static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
 170        {
 171                .name   = "NAND partition",
 172                .offset = 0,
 173                .size   = MTDPART_SIZ_FULL,
 174        },
 175};
 176
 177static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 178{
 179        *num_partitions = ARRAY_SIZE(cap9adk_nand_partitions);
 180        return cap9adk_nand_partitions;
 181}
 182
 183static struct atmel_nand_data __initdata cap9adk_nand_data = {
 184        .ale            = 21,
 185        .cle            = 22,
 186//      .det_pin        = ... not connected
 187//      .rdy_pin        = ... not connected
 188        .enable_pin     = AT91_PIN_PD15,
 189        .partition_info = nand_partitions,
 190#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
 191        .bus_width_16   = 1,
 192#else
 193        .bus_width_16   = 0,
 194#endif
 195};
 196
 197static struct sam9_smc_config __initdata cap9adk_nand_smc_config = {
 198        .ncs_read_setup         = 1,
 199        .nrd_setup              = 2,
 200        .ncs_write_setup        = 1,
 201        .nwe_setup              = 2,
 202
 203        .ncs_read_pulse         = 6,
 204        .nrd_pulse              = 4,
 205        .ncs_write_pulse        = 6,
 206        .nwe_pulse              = 4,
 207
 208        .read_cycle             = 8,
 209        .write_cycle            = 8,
 210
 211        .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 212        .tdf_cycles             = 1,
 213};
 214
 215static void __init cap9adk_add_device_nand(void)
 216{
 217        unsigned long csa;
 218
 219        csa = at91_sys_read(AT91_MATRIX_EBICSA);
 220        at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 221
 222        /* setup bus-width (8 or 16) */
 223        if (cap9adk_nand_data.bus_width_16)
 224                cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_16;
 225        else
 226                cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_8;
 227
 228        /* configure chip-select 3 (NAND) */
 229        sam9_smc_configure(3, &cap9adk_nand_smc_config);
 230
 231        at91_add_device_nand(&cap9adk_nand_data);
 232}
 233
 234
 235/*
 236 * NOR flash
 237 */
 238static struct mtd_partition cap9adk_nor_partitions[] = {
 239        {
 240                .name           = "NOR partition",
 241                .offset         = 0,
 242                .size           = MTDPART_SIZ_FULL,
 243        },
 244};
 245
 246static struct physmap_flash_data cap9adk_nor_data = {
 247        .width          = 2,
 248        .parts          = cap9adk_nor_partitions,
 249        .nr_parts       = ARRAY_SIZE(cap9adk_nor_partitions),
 250};
 251
 252#define NOR_BASE        AT91_CHIPSELECT_0
 253#define NOR_SIZE        SZ_8M
 254
 255static struct resource nor_flash_resources[] = {
 256        {
 257                .start  = NOR_BASE,
 258                .end    = NOR_BASE + NOR_SIZE - 1,
 259                .flags  = IORESOURCE_MEM,
 260        }
 261};
 262
 263static struct platform_device cap9adk_nor_flash = {
 264        .name           = "physmap-flash",
 265        .id             = 0,
 266        .dev            = {
 267                                .platform_data  = &cap9adk_nor_data,
 268        },
 269        .resource       = nor_flash_resources,
 270        .num_resources  = ARRAY_SIZE(nor_flash_resources),
 271};
 272
 273static struct sam9_smc_config __initdata cap9adk_nor_smc_config = {
 274        .ncs_read_setup         = 2,
 275        .nrd_setup              = 4,
 276        .ncs_write_setup        = 2,
 277        .nwe_setup              = 4,
 278
 279        .ncs_read_pulse         = 10,
 280        .nrd_pulse              = 8,
 281        .ncs_write_pulse        = 10,
 282        .nwe_pulse              = 8,
 283
 284        .read_cycle             = 16,
 285        .write_cycle            = 16,
 286
 287        .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
 288        .tdf_cycles             = 1,
 289};
 290
 291static __init void cap9adk_add_device_nor(void)
 292{
 293        unsigned long csa;
 294
 295        csa = at91_sys_read(AT91_MATRIX_EBICSA);
 296        at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 297
 298        /* configure chip-select 0 (NOR) */
 299        sam9_smc_configure(0, &cap9adk_nor_smc_config);
 300
 301        platform_device_register(&cap9adk_nor_flash);
 302}
 303
 304
 305/*
 306 * LCD Controller
 307 */
 308#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 309static struct fb_videomode at91_tft_vga_modes[] = {
 310        {
 311                .name           = "TX09D50VM1CCA @ 60",
 312                .refresh        = 60,
 313                .xres           = 240,          .yres           = 320,
 314                .pixclock       = KHZ2PICOS(4965),
 315
 316                .left_margin    = 1,            .right_margin   = 33,
 317                .upper_margin   = 1,            .lower_margin   = 0,
 318                .hsync_len      = 5,            .vsync_len      = 1,
 319
 320                .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 321                .vmode          = FB_VMODE_NONINTERLACED,
 322        },
 323};
 324
 325static struct fb_monspecs at91fb_default_monspecs = {
 326        .manufacturer   = "HIT",
 327        .monitor        = "TX09D70VM1CCA",
 328
 329        .modedb         = at91_tft_vga_modes,
 330        .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 331        .hfmin          = 15000,
 332        .hfmax          = 64000,
 333        .vfmin          = 50,
 334        .vfmax          = 150,
 335};
 336
 337#define AT91CAP9_DEFAULT_LCDCON2        (ATMEL_LCDC_MEMOR_LITTLE \
 338                                        | ATMEL_LCDC_DISTYPE_TFT    \
 339                                        | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 340
 341static void at91_lcdc_power_control(int on)
 342{
 343        if (on)
 344                at91_set_gpio_value(AT91_PIN_PC0, 0);   /* power up */
 345        else
 346                at91_set_gpio_value(AT91_PIN_PC0, 1);   /* power down */
 347}
 348
 349/* Driver datas */
 350static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
 351        .default_bpp                    = 16,
 352        .default_dmacon                 = ATMEL_LCDC_DMAEN,
 353        .default_lcdcon2                = AT91CAP9_DEFAULT_LCDCON2,
 354        .default_monspecs               = &at91fb_default_monspecs,
 355        .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 356        .guard_time                     = 1,
 357};
 358
 359#else
 360static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data;
 361#endif
 362
 363
 364/*
 365 * AC97
 366 */
 367static struct ac97c_platform_data cap9adk_ac97_data = {
 368//      .reset_pin      = ... not connected
 369};
 370
 371
 372static void __init cap9adk_board_init(void)
 373{
 374        /* Serial */
 375        at91_add_device_serial();
 376        /* USB Host */
 377        at91_add_device_usbh(&cap9adk_usbh_data);
 378        /* USB HS */
 379        at91_add_device_usba(&cap9adk_usba_udc_data);
 380        /* SPI */
 381        at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
 382        /* Touchscreen */
 383        cap9adk_add_device_ts();
 384        /* MMC */
 385        at91_add_device_mmc(1, &cap9adk_mmc_data);
 386        /* Ethernet */
 387        at91_add_device_eth(&cap9adk_macb_data);
 388        /* NAND */
 389        cap9adk_add_device_nand();
 390        /* NOR Flash */
 391        cap9adk_add_device_nor();
 392        /* I2C */
 393        at91_add_device_i2c(NULL, 0);
 394        /* LCD Controller */
 395        at91_add_device_lcdc(&cap9adk_lcdc_data);
 396        /* AC97 */
 397        at91_add_device_ac97(&cap9adk_ac97_data);
 398}
 399
 400MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
 401        /* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
 402        .boot_params    = AT91_SDRAM_BASE + 0x100,
 403        .timer          = &at91sam926x_timer,
 404        .map_io         = cap9adk_map_io,
 405        .init_irq       = cap9adk_init_irq,
 406        .init_machine   = cap9adk_board_init,
 407MACHINE_END
 408