arch/arm/mach-at91/board-usb-a926x.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-usb-a926x.c
   3  *
   4  *  Copyright (C) 2005 SAN People
   5  *  Copyright (C) 2007 Atmel Corporation.
   6  *  Copyright (C) 2007 Calao-systems
   7  *  Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
   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/gpio_keys.h>
  31 #include <linux/gpio.h>
  32 #include <linux/input.h>
  33 #include <linux/spi/mmc_spi.h>
  34
  35 #include <asm/setup.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/irq.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <mach/hardware.h>
  44 #include <mach/board.h>
  45 #include <mach/at91sam9_smc.h>
  46 #include <mach/at91_shdwc.h>
  47
  48 #include "sam9_smc.h"
  49 #include "generic.h"
  50
  51
  52 static void __init ek_init_early(void)
  53 {
  54         /* Initialize processor: 12.00 MHz crystal */
  55         at91_initialize(12000000);
  56
  57         /* DBGU on ttyS0. (Rx & Tx only) */
  58         at91_register_uart(0, 0, 0);
  59
  60         /* set serial console to ttyS0 (ie, DBGU) */
  61         at91_set_serial_console(0);
  62 }
  63
  64 /*
  65  * USB Host port
  66  */
  67 static struct at91_usbh_data __initdata ek_usbh_data = {
  68         .ports          = 2,
  69 };
  70
  71 /*
  72  * USB Device port
  73  */
  74 static struct at91_udc_data __initdata ek_udc_data = {
  75         .vbus_pin       = AT91_PIN_PB11,
  76         .pullup_pin     = 0,            /* pull-up driven by UDC */
  77 };
  78
  79 static void __init ek_add_device_udc(void)
  80 {
  81         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
  82                 ek_udc_data.vbus_pin = AT91_PIN_PC5;
  83
  84         at91_add_device_udc(&ek_udc_data);
  85 }
  86
  87 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
  88 #define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
  89 static int at91_mmc_spi_init(struct device *dev,
  90         irqreturn_t (*detect_int)(int, void *), void *data)
  91 {
  92         /* Configure Interrupt pin as input, no pull-up */
  93         at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
  94         return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
  95                 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
  96                 "mmc-spi-detect", data);
  97 }
  98
  99 static void at91_mmc_spi_exit(struct device *dev, void *data)
 100 {
 101         free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
 102 }
 103
 104 static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
 105         .init = at91_mmc_spi_init,
 106         .exit = at91_mmc_spi_exit,
 107         .detect_delay = 100, /* msecs */
 108 };
 109 #endif
 110
 111 /*
 112  * SPI devices.
 113  */
 114 static struct spi_board_info usb_a9263_spi_devices[] = {
 115 #if !defined(CONFIG_MMC_AT91)
 116         {       /* DataFlash chip */
 117                 .modalias       = "mtd_dataflash",
 118                 .chip_select    = 0,
 119                 .max_speed_hz   = 15 * 1000 * 1000,
 120                 .bus_num        = 0,
 121         }
 122 #endif
 123 };
 124
 125 static struct spi_board_info usb_a9g20_spi_devices[] = {
 126 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
 127         {
 128                 .modalias = "mmc_spi",
 129                 .max_speed_hz = 20000000,       /* max spi clock (SCK) speed in HZ */
 130                 .bus_num = 1,
 131                 .chip_select = 0,
 132                 .platform_data = &at91_mmc_spi_pdata,
 133                 .mode = SPI_MODE_3,
 134         },
 135 #endif
 136 };
 137
 138 static void __init ek_add_device_spi(void)
 139 {
 140         if (machine_is_usb_a9263())
 141                 at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
 142         else if (machine_is_usb_a9g20())
 143                 at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
 144 }
 145
 146 /*
 147  * MACB Ethernet device
 148  */
 149 static struct at91_eth_data __initdata ek_macb_data = {
 150         .phy_irq_pin    = AT91_PIN_PE31,
 151         .is_rmii        = 1,
 152 };
 153
 154 static void __init ek_add_device_eth(void)
 155 {
 156         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 157                 ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
 158
 159         at91_add_device_eth(&ek_macb_data);
 160 }
 161
 162 /*
 163  * NAND flash
 164  */
 165 static struct mtd_partition __initdata ek_nand_partition[] = {
 166         {
 167                 .name   = "barebox",
 168                 .offset = 0,
 169                 .size   = 3 * SZ_128K,
 170         }, {
 171                 .name   = "bareboxenv",
 172                 .offset = MTDPART_OFS_NXTBLK,
 173                 .size   = SZ_128K,
 174         }, {
 175                 .name   = "bareboxenv2",
 176                 .offset = MTDPART_OFS_NXTBLK,
 177                 .size   = SZ_128K,
 178         }, {
 179                 .name   = "kernel",
 180                 .offset = MTDPART_OFS_NXTBLK,
 181                 .size   = 4 * SZ_1M,
 182         }, {
 183                 .name   = "rootfs",
 184                 .offset = MTDPART_OFS_NXTBLK,
 185                 .size   = 120 * SZ_1M,
 186         }, {
 187                 .name   = "data",
 188                 .offset = MTDPART_OFS_NXTBLK,
 189                 .size   = MTDPART_SIZ_FULL,
 190         }
 191 };
 192
 193 static struct atmel_nand_data __initdata ek_nand_data = {
 194         .ale            = 21,
 195         .cle            = 22,
 196 //      .det_pin        = ... not connected
 197         .rdy_pin        = AT91_PIN_PA22,
 198         .enable_pin     = AT91_PIN_PD15,
 199         .parts          = ek_nand_partition,
 200         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 201 };
 202
 203 static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {
 204         .ncs_read_setup         = 0,
 205         .nrd_setup              = 1,
 206         .ncs_write_setup        = 0,
 207         .nwe_setup              = 1,
 208
 209         .ncs_read_pulse         = 3,
 210         .nrd_pulse              = 3,
 211         .ncs_write_pulse        = 3,
 212         .nwe_pulse              = 3,
 213
 214         .read_cycle             = 5,
 215         .write_cycle            = 5,
 216
 217         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 218         .tdf_cycles             = 2,
 219 };
 220
 221 static struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
 222         .ncs_read_setup         = 0,
 223         .nrd_setup              = 2,
 224         .ncs_write_setup        = 0,
 225         .nwe_setup              = 2,
 226
 227         .ncs_read_pulse         = 4,
 228         .nrd_pulse              = 4,
 229         .ncs_write_pulse        = 4,
 230         .nwe_pulse              = 4,
 231
 232         .read_cycle             = 7,
 233         .write_cycle            = 7,
 234
 235         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 236         .tdf_cycles             = 3,
 237 };
 238
 239 static void __init ek_add_device_nand(void)
 240 {
 241         if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
 242                 ek_nand_data.rdy_pin    = AT91_PIN_PC13;
 243                 ek_nand_data.enable_pin = AT91_PIN_PC14;
 244         }
 245
 246         /* configure chip-select 3 (NAND) */
 247         if (machine_is_usb_a9g20())
 248                 sam9_smc_configure(3, &usb_a9g20_nand_smc_config);
 249         else
 250                 sam9_smc_configure(3, &usb_a9260_nand_smc_config);
 251
 252         at91_add_device_nand(&ek_nand_data);
 253 }
 254
 255
 256 /*
 257  * GPIO Buttons
 258  */
 259 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 260 static struct gpio_keys_button ek_buttons[] = {
 261         {       /* USER PUSH BUTTON */
 262                 .code           = KEY_ENTER,
 263                 .gpio           = AT91_PIN_PB10,
 264                 .active_low     = 1,
 265                 .desc           = "user_pb",
 266                 .wakeup         = 1,
 267         }
 268 };
 269
 270 static struct gpio_keys_platform_data ek_button_data = {
 271         .buttons        = ek_buttons,
 272         .nbuttons       = ARRAY_SIZE(ek_buttons),
 273 };
 274
 275 static struct platform_device ek_button_device = {
 276         .name           = "gpio-keys",
 277         .id             = -1,
 278         .num_resources  = 0,
 279         .dev            = {
 280                 .platform_data  = &ek_button_data,
 281         }
 282 };
 283
 284 static void __init ek_add_device_buttons(void)
 285 {
 286         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 287         at91_set_deglitch(AT91_PIN_PB10, 1);
 288
 289         platform_device_register(&ek_button_device);
 290 }
 291 #else
 292 static void __init ek_add_device_buttons(void) {}
 293 #endif
 294
 295 /*
 296  * LEDs
 297  */
 298 static struct gpio_led ek_leds[] = {
 299         {       /* user_led (green) */
 300                 .name                   = "user_led",
 301                 .gpio                   = AT91_PIN_PB21,
 302                 .active_low             = 1,
 303                 .default_trigger        = "heartbeat",
 304         }
 305 };
 306
 307 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 308         {
 309                 I2C_BOARD_INFO("rv3029c2", 0x56),
 310         },
 311 };
 312
 313 static void __init ek_add_device_leds(void)
 314 {
 315         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 316                 ek_leds[0].active_low = 0;
 317
 318         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 319 }
 320
 321 static void __init ek_board_init(void)
 322 {
 323         /* Serial */
 324         at91_add_device_serial();
 325         /* USB Host */
 326         at91_add_device_usbh(&ek_usbh_data);
 327         /* USB Device */
 328         ek_add_device_udc();
 329         /* SPI */
 330         ek_add_device_spi();
 331         /* Ethernet */
 332         ek_add_device_eth();
 333         /* NAND */
 334         ek_add_device_nand();
 335         /* Push Buttons */
 336         ek_add_device_buttons();
 337         /* LEDs */
 338         ek_add_device_leds();
 339
 340         if (machine_is_usb_a9g20()) {
 341                 /* I2C */
 342                 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 343         } else {
 344                 /* I2C */
 345                 at91_add_device_i2c(NULL, 0);
 346                 /* shutdown controller, wakeup button (5 msec low) */
 347                 at91_sys_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
 348                                 | AT91_SHDW_WKMODE0_LOW
 349                                 | AT91_SHDW_RTTWKEN);
 350         }
 351 }
 352
 353 MACHINE_START(USB_A9263, "CALAO USB_A9263")
 354         /* Maintainer: calao-systems */
 355         .timer          = &at91sam926x_timer,
 356         .map_io         = at91_map_io,
 357         .init_early     = ek_init_early,
 358         .init_irq       = at91_init_irq_default,
 359         .init_machine   = ek_board_init,
 360 MACHINE_END
 361
 362 MACHINE_START(USB_A9260, "CALAO USB_A9260")
 363         /* Maintainer: calao-systems */
 364         .timer          = &at91sam926x_timer,
 365         .map_io         = at91_map_io,
 366         .init_early     = ek_init_early,
 367         .init_irq       = at91_init_irq_default,
 368         .init_machine   = ek_board_init,
 369 MACHINE_END
 370
 371 MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
 372         /* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
 373         .timer          = &at91sam926x_timer,
 374         .map_io         = at91_map_io,
 375         .init_early     = ek_init_early,
 376         .init_irq       = at91_init_irq_default,
 377         .init_machine   = ek_board_init,
 378 MACHINE_END