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 <asm/hardware.h>
  37 #include <asm/setup.h>
  38 #include <asm/mach-types.h>
  39 #include <asm/irq.h>
  40
  41 #include <asm/mach/arch.h>
  42 #include <asm/mach/map.h>
  43 #include <asm/mach/irq.h>
  44
  45 #include <asm/arch/board.h>
  46 #include <asm/arch/gpio.h>
  47 #include <asm/arch/at91cap9_matrix.h>
  48 #include <asm/arch/at91sam926x_mc.h>
  49
  50 #include "generic.h"
  51
  52
  53 static void __init cap9adk_map_io(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 /*
  83  * ADS7846 Touchscreen
  84  */
  85 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  86 static int ads7843_pendown_state(void)
  87 {
  88         return !at91_get_gpio_value(AT91_PIN_PC4);      /* Touchscreen PENIRQ */
  89 }
  90
  91 static struct ads7846_platform_data ads_info = {
  92         .model                  = 7843,
  93         .x_min                  = 150,
  94         .x_max                  = 3830,
  95         .y_min                  = 190,
  96         .y_max                  = 3830,
  97         .vref_delay_usecs       = 100,
  98         .x_plate_ohms           = 450,
  99         .y_plate_ohms           = 250,
 100         .pressure_max           = 15000,
 101         .debounce_max           = 1,
 102         .debounce_rep           = 0,
 103         .debounce_tol           = (~0),
 104         .get_pendown_state      = ads7843_pendown_state,
 105 };
 106
 107 static void __init cap9adk_add_device_ts(void)
 108 {
 109         at91_set_gpio_input(AT91_PIN_PC4, 1);   /* Touchscreen PENIRQ */
 110         at91_set_gpio_input(AT91_PIN_PC5, 1);   /* Touchscreen BUSY */
 111 }
 112 #else
 113 static void __init cap9adk_add_device_ts(void) {}
 114 #endif
 115
 116
 117 /*
 118  * SPI devices.
 119  */
 120 static struct spi_board_info cap9adk_spi_devices[] = {
 121 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 122         {       /* DataFlash card */
 123                 .modalias       = "mtd_dataflash",
 124                 .chip_select    = 0,
 125                 .max_speed_hz   = 15 * 1000 * 1000,
 126                 .bus_num        = 0,
 127         },
 128 #endif
 129 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 130         {
 131                 .modalias       = "ads7846",
 132                 .chip_select    = 3,            /* can be 2 or 3, depending on J2 jumper */
 133                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 134                 .bus_num        = 0,
 135                 .platform_data  = &ads_info,
 136                 .irq            = AT91_PIN_PC4,
 137         },
 138 #endif
 139 };
 140
 141
 142 /*
 143  * MCI (SD/MMC)
 144  */
 145 static struct at91_mmc_data __initdata cap9adk_mmc_data = {
 146         .wire4          = 1,
 147 //      .det_pin        = ... not connected
 148 //      .wp_pin         = ... not connected
 149 //      .vcc_pin        = ... not connected
 150 };
 151
 152
 153 /*
 154  * MACB Ethernet device
 155  */
 156 static struct at91_eth_data __initdata cap9adk_macb_data = {
 157         .is_rmii        = 1,
 158 };
 159
 160
 161 /*
 162  * NAND flash
 163  */
 164 static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
 165         {
 166                 .name   = "NAND partition",
 167                 .offset = 0,
 168                 .size   = MTDPART_SIZ_FULL,
 169         },
 170 };
 171
 172 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
 173 {
 174         *num_partitions = ARRAY_SIZE(cap9adk_nand_partitions);
 175         return cap9adk_nand_partitions;
 176 }
 177
 178 static struct at91_nand_data __initdata cap9adk_nand_data = {
 179         .ale            = 21,
 180         .cle            = 22,
 181 //      .det_pin        = ... not connected
 182 //      .rdy_pin        = ... not connected
 183         .enable_pin     = AT91_PIN_PD15,
 184         .partition_info = nand_partitions,
 185 #if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
 186         .bus_width_16   = 1,
 187 #else
 188         .bus_width_16   = 0,
 189 #endif
 190 };
 191
 192
 193 /*
 194  * NOR flash
 195  */
 196 static struct mtd_partition cap9adk_nor_partitions[] = {
 197         {
 198                 .name           = "NOR partition",
 199                 .offset         = 0,
 200                 .size           = MTDPART_SIZ_FULL,
 201         },
 202 };
 203
 204 static struct physmap_flash_data cap9adk_nor_data = {
 205         .width          = 2,
 206         .parts          = cap9adk_nor_partitions,
 207         .nr_parts       = ARRAY_SIZE(cap9adk_nor_partitions),
 208 };
 209
 210 #define NOR_BASE        AT91_CHIPSELECT_0
 211 #define NOR_SIZE        0x800000
 212
 213 static struct resource nor_flash_resources[] = {
 214         {
 215                 .start  = NOR_BASE,
 216                 .end    = NOR_BASE + NOR_SIZE - 1,
 217                 .flags  = IORESOURCE_MEM,
 218         }
 219 };
 220
 221 static struct platform_device cap9adk_nor_flash = {
 222         .name           = "physmap-flash",
 223         .id             = 0,
 224         .dev            = {
 225                                 .platform_data  = &cap9adk_nor_data,
 226         },
 227         .resource       = nor_flash_resources,
 228         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 229 };
 230
 231 static __init void cap9adk_add_device_nor(void)
 232 {
 233         unsigned long csa;
 234
 235         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 236         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 237
 238         /* set the bus interface characteristics */
 239         at91_sys_write(AT91_SMC_SETUP(0), AT91_SMC_NWESETUP_(4) | AT91_SMC_NCS_WRSETUP_(2)
 240                         | AT91_SMC_NRDSETUP_(4) | AT91_SMC_NCS_RDSETUP_(2));
 241
 242         at91_sys_write(AT91_SMC_PULSE(0), AT91_SMC_NWEPULSE_(8) | AT91_SMC_NCS_WRPULSE_(10)
 243                         | AT91_SMC_NRDPULSE_(8) | AT91_SMC_NCS_RDPULSE_(10));
 244
 245         at91_sys_write(AT91_SMC_CYCLE(0), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
 246
 247         at91_sys_write(AT91_SMC_MODE(0), AT91_SMC_READMODE | AT91_SMC_WRITEMODE
 248                         | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE
 249                         | AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
 250
 251         platform_device_register(&cap9adk_nor_flash);
 252 }
 253
 254
 255 /*
 256  * LCD Controller
 257  */
 258 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 259 static struct fb_videomode at91_tft_vga_modes[] = {
 260         {
 261                 .name           = "TX09D50VM1CCA @ 60",
 262                 .refresh        = 60,
 263                 .xres           = 240,          .yres           = 320,
 264                 .pixclock       = KHZ2PICOS(4965),
 265
 266                 .left_margin    = 1,            .right_margin   = 33,
 267                 .upper_margin   = 1,            .lower_margin   = 0,
 268                 .hsync_len      = 5,            .vsync_len      = 1,
 269
 270                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 271                 .vmode          = FB_VMODE_NONINTERLACED,
 272         },
 273 };
 274
 275 static struct fb_monspecs at91fb_default_monspecs = {
 276         .manufacturer   = "HIT",
 277         .monitor        = "TX09D70VM1CCA",
 278
 279         .modedb         = at91_tft_vga_modes,
 280         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 281         .hfmin          = 15000,
 282         .hfmax          = 64000,
 283         .vfmin          = 50,
 284         .vfmax          = 150,
 285 };
 286
 287 #define AT91CAP9_DEFAULT_LCDCON2        (ATMEL_LCDC_MEMOR_LITTLE \
 288                                         | ATMEL_LCDC_DISTYPE_TFT    \
 289                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 290
 291 static void at91_lcdc_power_control(int on)
 292 {
 293         if (on)
 294                 at91_set_gpio_value(AT91_PIN_PC0, 0);   /* power up */
 295         else
 296                 at91_set_gpio_value(AT91_PIN_PC0, 1);   /* power down */
 297 }
 298
 299 /* Driver datas */
 300 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
 301         .default_bpp                    = 16,
 302         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 303         .default_lcdcon2                = AT91CAP9_DEFAULT_LCDCON2,
 304         .default_monspecs               = &at91fb_default_monspecs,
 305         .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 306         .guard_time                     = 1,
 307 };
 308
 309 #else
 310 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data;
 311 #endif
 312
 313
 314 /*
 315  * AC97
 316  */
 317 static struct atmel_ac97_data cap9adk_ac97_data = {
 318 //      .reset_pin      = ... not connected
 319 };
 320
 321
 322 static void __init cap9adk_board_init(void)
 323 {
 324         /* Serial */
 325         at91_add_device_serial();
 326         /* USB Host */
 327         set_irq_type(AT91CAP9_ID_UHP, IRQT_HIGH);
 328         at91_add_device_usbh(&cap9adk_usbh_data);
 329         /* SPI */
 330         at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
 331         /* Touchscreen */
 332         cap9adk_add_device_ts();
 333         /* MMC */
 334         at91_add_device_mmc(1, &cap9adk_mmc_data);
 335         /* Ethernet */
 336         at91_add_device_eth(&cap9adk_macb_data);
 337         /* NAND */
 338         at91_add_device_nand(&cap9adk_nand_data);
 339         /* NOR Flash */
 340         cap9adk_add_device_nor();
 341         /* I2C */
 342         at91_add_device_i2c(NULL, 0);
 343         /* LCD Controller */
 344         set_irq_type(AT91CAP9_ID_LCDC, IRQT_HIGH);
 345         at91_add_device_lcdc(&cap9adk_lcdc_data);
 346         /* AC97 */
 347         at91_add_device_ac97(&cap9adk_ac97_data);
 348 }
 349
 350 MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
 351         /* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
 352         .phys_io        = AT91_BASE_SYS,
 353         .io_pg_offst    = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
 354         .boot_params    = AT91_SDRAM_BASE + 0x100,
 355         .timer          = &at91sam926x_timer,
 356         .map_io         = cap9adk_map_io,
 357         .init_irq       = cap9adk_init_irq,
 358         .init_machine   = cap9adk_board_init,
 359 MACHINE_END