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 #include <mach/system_rev.h>
  48
  49 #include "sam9_smc.h"
  50 #include "generic.h"
  51
  52
  53 static void __init cap9adk_init_early(void)
  54 {
  55         /* Initialize processor: 12 MHz crystal */
  56         at91cap9_initialize(12000000);
  57
  58         /* Setup the LEDs: USER1 and USER2 LED for cpu/timer... */
  59         at91_init_leds(AT91_PIN_PA10, AT91_PIN_PA11);
  60         /* ... POWER LED always on */
  61         at91_set_gpio_output(AT91_PIN_PC29, 1);
  62
  63         /* Setup the serial ports and console */
  64         at91_register_uart(0, 0, 0);            /* DBGU = ttyS0 */
  65         at91_set_serial_console(0);
  66 }
  67
  68 static void __init cap9adk_init_irq(void)
  69 {
  70         at91cap9_init_interrupts(NULL);
  71 }
  72
  73
  74 /*
  75  * USB Host port
  76  */
  77 static struct at91_usbh_data __initdata cap9adk_usbh_data = {
  78         .ports          = 2,
  79 };
  80
  81 /*
  82  * USB HS Device port
  83  */
  84 static struct usba_platform_data __initdata cap9adk_usba_udc_data = {
  85         .vbus_pin       = AT91_PIN_PB31,
  86 };
  87
  88 /*
  89  * ADS7846 Touchscreen
  90  */
  91 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  92 static int ads7843_pendown_state(void)
  93 {
  94         return !at91_get_gpio_value(AT91_PIN_PC4);      /* Touchscreen PENIRQ */
  95 }
  96
  97 static struct ads7846_platform_data ads_info = {
  98         .model                  = 7843,
  99         .x_min                  = 150,
 100         .x_max                  = 3830,
 101         .y_min                  = 190,
 102         .y_max                  = 3830,
 103         .vref_delay_usecs       = 100,
 104         .x_plate_ohms           = 450,
 105         .y_plate_ohms           = 250,
 106         .pressure_max           = 15000,
 107         .debounce_max           = 1,
 108         .debounce_rep           = 0,
 109         .debounce_tol           = (~0),
 110         .get_pendown_state      = ads7843_pendown_state,
 111 };
 112
 113 static void __init cap9adk_add_device_ts(void)
 114 {
 115         at91_set_gpio_input(AT91_PIN_PC4, 1);   /* Touchscreen PENIRQ */
 116         at91_set_gpio_input(AT91_PIN_PC5, 1);   /* Touchscreen BUSY */
 117 }
 118 #else
 119 static void __init cap9adk_add_device_ts(void) {}
 120 #endif
 121
 122
 123 /*
 124  * SPI devices.
 125  */
 126 static struct spi_board_info cap9adk_spi_devices[] = {
 127 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 128         {       /* DataFlash card */
 129                 .modalias       = "mtd_dataflash",
 130                 .chip_select    = 0,
 131                 .max_speed_hz   = 15 * 1000 * 1000,
 132                 .bus_num        = 0,
 133         },
 134 #endif
 135 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 136         {
 137                 .modalias       = "ads7846",
 138                 .chip_select    = 3,            /* can be 2 or 3, depending on J2 jumper */
 139                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 140                 .bus_num        = 0,
 141                 .platform_data  = &ads_info,
 142                 .irq            = AT91_PIN_PC4,
 143         },
 144 #endif
 145 };
 146
 147
 148 /*
 149  * MCI (SD/MMC)
 150  */
 151 static struct at91_mmc_data __initdata cap9adk_mmc_data = {
 152         .wire4          = 1,
 153 //      .det_pin        = ... not connected
 154 //      .wp_pin         = ... not connected
 155 //      .vcc_pin        = ... not connected
 156 };
 157
 158
 159 /*
 160  * MACB Ethernet device
 161  */
 162 static struct at91_eth_data __initdata cap9adk_macb_data = {
 163         .is_rmii        = 1,
 164 };
 165
 166
 167 /*
 168  * NAND flash
 169  */
 170 static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
 171         {
 172                 .name   = "NAND partition",
 173                 .offset = 0,
 174                 .size   = MTDPART_SIZ_FULL,
 175         },
 176 };
 177
 178 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 179 {
 180         *num_partitions = ARRAY_SIZE(cap9adk_nand_partitions);
 181         return cap9adk_nand_partitions;
 182 }
 183
 184 static struct atmel_nand_data __initdata cap9adk_nand_data = {
 185         .ale            = 21,
 186         .cle            = 22,
 187 //      .det_pin        = ... not connected
 188 //      .rdy_pin        = ... not connected
 189         .enable_pin     = AT91_PIN_PD15,
 190         .partition_info = nand_partitions,
 191 };
 192
 193 static struct sam9_smc_config __initdata cap9adk_nand_smc_config = {
 194         .ncs_read_setup         = 1,
 195         .nrd_setup              = 2,
 196         .ncs_write_setup        = 1,
 197         .nwe_setup              = 2,
 198
 199         .ncs_read_pulse         = 6,
 200         .nrd_pulse              = 4,
 201         .ncs_write_pulse        = 6,
 202         .nwe_pulse              = 4,
 203
 204         .read_cycle             = 8,
 205         .write_cycle            = 8,
 206
 207         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 208         .tdf_cycles             = 1,
 209 };
 210
 211 static void __init cap9adk_add_device_nand(void)
 212 {
 213         unsigned long csa;
 214
 215         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 216         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 217
 218         cap9adk_nand_data.bus_width_16 = board_have_nand_16bit();
 219         /* setup bus-width (8 or 16) */
 220         if (cap9adk_nand_data.bus_width_16)
 221                 cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_16;
 222         else
 223                 cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_8;
 224
 225         /* configure chip-select 3 (NAND) */
 226         sam9_smc_configure(3, &cap9adk_nand_smc_config);
 227
 228         at91_add_device_nand(&cap9adk_nand_data);
 229 }
 230
 231
 232 /*
 233  * NOR flash
 234  */
 235 static struct mtd_partition cap9adk_nor_partitions[] = {
 236         {
 237                 .name           = "NOR partition",
 238                 .offset         = 0,
 239                 .size           = MTDPART_SIZ_FULL,
 240         },
 241 };
 242
 243 static struct physmap_flash_data cap9adk_nor_data = {
 244         .width          = 2,
 245         .parts          = cap9adk_nor_partitions,
 246         .nr_parts       = ARRAY_SIZE(cap9adk_nor_partitions),
 247 };
 248
 249 #define NOR_BASE        AT91_CHIPSELECT_0
 250 #define NOR_SIZE        SZ_8M
 251
 252 static struct resource nor_flash_resources[] = {
 253         {
 254                 .start  = NOR_BASE,
 255                 .end    = NOR_BASE + NOR_SIZE - 1,
 256                 .flags  = IORESOURCE_MEM,
 257         }
 258 };
 259
 260 static struct platform_device cap9adk_nor_flash = {
 261         .name           = "physmap-flash",
 262         .id             = 0,
 263         .dev            = {
 264                                 .platform_data  = &cap9adk_nor_data,
 265         },
 266         .resource       = nor_flash_resources,
 267         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 268 };
 269
 270 static struct sam9_smc_config __initdata cap9adk_nor_smc_config = {
 271         .ncs_read_setup         = 2,
 272         .nrd_setup              = 4,
 273         .ncs_write_setup        = 2,
 274         .nwe_setup              = 4,
 275
 276         .ncs_read_pulse         = 10,
 277         .nrd_pulse              = 8,
 278         .ncs_write_pulse        = 10,
 279         .nwe_pulse              = 8,
 280
 281         .read_cycle             = 16,
 282         .write_cycle            = 16,
 283
 284         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
 285         .tdf_cycles             = 1,
 286 };
 287
 288 static __init void cap9adk_add_device_nor(void)
 289 {
 290         unsigned long csa;
 291
 292         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 293         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 294
 295         /* configure chip-select 0 (NOR) */
 296         sam9_smc_configure(0, &cap9adk_nor_smc_config);
 297
 298         platform_device_register(&cap9adk_nor_flash);
 299 }
 300
 301
 302 /*
 303  * LCD Controller
 304  */
 305 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 306 static struct fb_videomode at91_tft_vga_modes[] = {
 307         {
 308                 .name           = "TX09D50VM1CCA @ 60",
 309                 .refresh        = 60,
 310                 .xres           = 240,          .yres           = 320,
 311                 .pixclock       = KHZ2PICOS(4965),
 312
 313                 .left_margin    = 1,            .right_margin   = 33,
 314                 .upper_margin   = 1,            .lower_margin   = 0,
 315                 .hsync_len      = 5,            .vsync_len      = 1,
 316
 317                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 318                 .vmode          = FB_VMODE_NONINTERLACED,
 319         },
 320 };
 321
 322 static struct fb_monspecs at91fb_default_monspecs = {
 323         .manufacturer   = "HIT",
 324         .monitor        = "TX09D70VM1CCA",
 325
 326         .modedb         = at91_tft_vga_modes,
 327         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 328         .hfmin          = 15000,
 329         .hfmax          = 64000,
 330         .vfmin          = 50,
 331         .vfmax          = 150,
 332 };
 333
 334 #define AT91CAP9_DEFAULT_LCDCON2        (ATMEL_LCDC_MEMOR_LITTLE \
 335                                         | ATMEL_LCDC_DISTYPE_TFT    \
 336                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 337
 338 static void at91_lcdc_power_control(int on)
 339 {
 340         if (on)
 341                 at91_set_gpio_value(AT91_PIN_PC0, 0);   /* power up */
 342         else
 343                 at91_set_gpio_value(AT91_PIN_PC0, 1);   /* power down */
 344 }
 345
 346 /* Driver datas */
 347 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
 348         .default_bpp                    = 16,
 349         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 350         .default_lcdcon2                = AT91CAP9_DEFAULT_LCDCON2,
 351         .default_monspecs               = &at91fb_default_monspecs,
 352         .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 353         .guard_time                     = 1,
 354 };
 355
 356 #else
 357 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data;
 358 #endif
 359
 360
 361 /*
 362  * AC97
 363  */
 364 static struct ac97c_platform_data cap9adk_ac97_data = {
 365 //      .reset_pin      = ... not connected
 366 };
 367
 368
 369 static void __init cap9adk_board_init(void)
 370 {
 371         /* Serial */
 372         at91_add_device_serial();
 373         /* USB Host */
 374         at91_add_device_usbh(&cap9adk_usbh_data);
 375         /* USB HS */
 376         at91_add_device_usba(&cap9adk_usba_udc_data);
 377         /* SPI */
 378         at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
 379         /* Touchscreen */
 380         cap9adk_add_device_ts();
 381         /* MMC */
 382         at91_add_device_mmc(1, &cap9adk_mmc_data);
 383         /* Ethernet */
 384         at91_add_device_eth(&cap9adk_macb_data);
 385         /* NAND */
 386         cap9adk_add_device_nand();
 387         /* NOR Flash */
 388         cap9adk_add_device_nor();
 389         /* I2C */
 390         at91_add_device_i2c(NULL, 0);
 391         /* LCD Controller */
 392         at91_add_device_lcdc(&cap9adk_lcdc_data);
 393         /* AC97 */
 394         at91_add_device_ac97(&cap9adk_ac97_data);
 395 }
 396
 397 MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
 398         /* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
 399         .timer          = &at91sam926x_timer,
 400         .map_io         = at91cap9_map_io,
 401         .init_early     = cap9adk_init_early,
 402         .init_irq       = cap9adk_init_irq,
 403         .init_machine   = cap9adk_board_init,
 404 MACHINE_END