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
  61 /*
  62  * USB Host port
  63  */
  64 static struct at91_usbh_data __initdata ek_usbh_data = {
  65         .ports          = 2,
  66         .vbus_pin       = {-EINVAL, -EINVAL},
  67         .overcurrent_pin= {-EINVAL, -EINVAL},
  68 };
  69
  70 /*
  71  * USB Device port
  72  */
  73 static struct at91_udc_data __initdata ek_udc_data = {
  74         .vbus_pin       = AT91_PIN_PB11,
  75         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  76 };
  77
  78 static void __init ek_add_device_udc(void)
  79 {
  80         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
  81                 ek_udc_data.vbus_pin = AT91_PIN_PC5;
  82
  83         at91_add_device_udc(&ek_udc_data);
  84 }
  85
  86 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
  87 #define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
  88 static int at91_mmc_spi_init(struct device *dev,
  89         irqreturn_t (*detect_int)(int, void *), void *data)
  90 {
  91         /* Configure Interrupt pin as input, no pull-up */
  92         at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
  93         return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
  94                 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
  95                 "mmc-spi-detect", data);
  96 }
  97
  98 static void at91_mmc_spi_exit(struct device *dev, void *data)
  99 {
 100         free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
 101 }
 102
 103 static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
 104         .init = at91_mmc_spi_init,
 105         .exit = at91_mmc_spi_exit,
 106         .detect_delay = 100, /* msecs */
 107 };
 108 #endif
 109
 110 /*
 111  * SPI devices.
 112  */
 113 static struct spi_board_info usb_a9263_spi_devices[] = {
 114 #if !defined(CONFIG_MMC_AT91)
 115         {       /* DataFlash chip */
 116                 .modalias       = "mtd_dataflash",
 117                 .chip_select    = 0,
 118                 .max_speed_hz   = 15 * 1000 * 1000,
 119                 .bus_num        = 0,
 120         }
 121 #endif
 122 };
 123
 124 static struct spi_board_info usb_a9g20_spi_devices[] = {
 125 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
 126         {
 127                 .modalias = "mmc_spi",
 128                 .max_speed_hz = 20000000,       /* max spi clock (SCK) speed in HZ */
 129                 .bus_num = 1,
 130                 .chip_select = 0,
 131                 .platform_data = &at91_mmc_spi_pdata,
 132                 .mode = SPI_MODE_3,
 133         },
 134 #endif
 135 };
 136
 137 static void __init ek_add_device_spi(void)
 138 {
 139         if (machine_is_usb_a9263())
 140                 at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
 141         else if (machine_is_usb_a9g20())
 142                 at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
 143 }
 144
 145 /*
 146  * MACB Ethernet device
 147  */
 148 static struct macb_platform_data __initdata ek_macb_data = {
 149         .phy_irq_pin    = AT91_PIN_PE31,
 150         .is_rmii        = 1,
 151 };
 152
 153 static void __init ek_add_device_eth(void)
 154 {
 155         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 156                 ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
 157
 158         at91_add_device_eth(&ek_macb_data);
 159 }
 160
 161 /*
 162  * NAND flash
 163  */
 164 static struct mtd_partition __initdata ek_nand_partition[] = {
 165         {
 166                 .name   = "barebox",
 167                 .offset = 0,
 168                 .size   = 3 * SZ_128K,
 169         }, {
 170                 .name   = "bareboxenv",
 171                 .offset = MTDPART_OFS_NXTBLK,
 172                 .size   = SZ_128K,
 173         }, {
 174                 .name   = "bareboxenv2",
 175                 .offset = MTDPART_OFS_NXTBLK,
 176                 .size   = SZ_128K,
 177         }, {
 178                 .name   = "kernel",
 179                 .offset = MTDPART_OFS_NXTBLK,
 180                 .size   = 4 * SZ_1M,
 181         }, {
 182                 .name   = "rootfs",
 183                 .offset = MTDPART_OFS_NXTBLK,
 184                 .size   = 120 * SZ_1M,
 185         }, {
 186                 .name   = "data",
 187                 .offset = MTDPART_OFS_NXTBLK,
 188                 .size   = MTDPART_SIZ_FULL,
 189         }
 190 };
 191
 192 static struct atmel_nand_data __initdata ek_nand_data = {
 193         .ale            = 21,
 194         .cle            = 22,
 195         .det_pin        = -EINVAL,
 196         .rdy_pin        = AT91_PIN_PA22,
 197         .enable_pin     = AT91_PIN_PD15,
 198         .ecc_mode       = NAND_ECC_SOFT,
 199         .on_flash_bbt   = 1,
 200         .parts          = ek_nand_partition,
 201         .num_parts      = ARRAY_SIZE(ek_nand_partition),
 202 };
 203
 204 static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {
 205         .ncs_read_setup         = 0,
 206         .nrd_setup              = 1,
 207         .ncs_write_setup        = 0,
 208         .nwe_setup              = 1,
 209
 210         .ncs_read_pulse         = 3,
 211         .nrd_pulse              = 3,
 212         .ncs_write_pulse        = 3,
 213         .nwe_pulse              = 3,
 214
 215         .read_cycle             = 5,
 216         .write_cycle            = 5,
 217
 218         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 219         .tdf_cycles             = 2,
 220 };
 221
 222 static struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
 223         .ncs_read_setup         = 0,
 224         .nrd_setup              = 2,
 225         .ncs_write_setup        = 0,
 226         .nwe_setup              = 2,
 227
 228         .ncs_read_pulse         = 4,
 229         .nrd_pulse              = 4,
 230         .ncs_write_pulse        = 4,
 231         .nwe_pulse              = 4,
 232
 233         .read_cycle             = 7,
 234         .write_cycle            = 7,
 235
 236         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
 237         .tdf_cycles             = 3,
 238 };
 239
 240 static void __init ek_add_device_nand(void)
 241 {
 242         if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
 243                 ek_nand_data.rdy_pin    = AT91_PIN_PC13;
 244                 ek_nand_data.enable_pin = AT91_PIN_PC14;
 245         }
 246
 247         /* configure chip-select 3 (NAND) */
 248         if (machine_is_usb_a9g20())
 249                 sam9_smc_configure(0, 3, &usb_a9g20_nand_smc_config);
 250         else
 251                 sam9_smc_configure(0, 3, &usb_a9260_nand_smc_config);
 252
 253         at91_add_device_nand(&ek_nand_data);
 254 }
 255
 256
 257 /*
 258  * GPIO Buttons
 259  */
 260 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 261 static struct gpio_keys_button ek_buttons[] = {
 262         {       /* USER PUSH BUTTON */
 263                 .code           = KEY_ENTER,
 264                 .gpio           = AT91_PIN_PB10,
 265                 .active_low     = 1,
 266                 .desc           = "user_pb",
 267                 .wakeup         = 1,
 268         }
 269 };
 270
 271 static struct gpio_keys_platform_data ek_button_data = {
 272         .buttons        = ek_buttons,
 273         .nbuttons       = ARRAY_SIZE(ek_buttons),
 274 };
 275
 276 static struct platform_device ek_button_device = {
 277         .name           = "gpio-keys",
 278         .id             = -1,
 279         .num_resources  = 0,
 280         .dev            = {
 281                 .platform_data  = &ek_button_data,
 282         }
 283 };
 284
 285 static void __init ek_add_device_buttons(void)
 286 {
 287         at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
 288         at91_set_deglitch(AT91_PIN_PB10, 1);
 289
 290         platform_device_register(&ek_button_device);
 291 }
 292 #else
 293 static void __init ek_add_device_buttons(void) {}
 294 #endif
 295
 296 /*
 297  * LEDs
 298  */
 299 static struct gpio_led ek_leds[] = {
 300         {       /* user_led (green) */
 301                 .name                   = "user_led",
 302                 .gpio                   = AT91_PIN_PB21,
 303                 .active_low             = 1,
 304                 .default_trigger        = "heartbeat",
 305         }
 306 };
 307
 308 static struct i2c_board_info __initdata ek_i2c_devices[] = {
 309         {
 310                 I2C_BOARD_INFO("rv3029c2", 0x56),
 311         },
 312 };
 313
 314 static void __init ek_add_device_leds(void)
 315 {
 316         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 317                 ek_leds[0].active_low = 0;
 318
 319         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
 320 }
 321
 322 static void __init ek_board_init(void)
 323 {
 324         /* Serial */
 325         at91_add_device_serial();
 326         /* USB Host */
 327         at91_add_device_usbh(&ek_usbh_data);
 328         /* USB Device */
 329         ek_add_device_udc();
 330         /* SPI */
 331         ek_add_device_spi();
 332         /* Ethernet */
 333         ek_add_device_eth();
 334         /* NAND */
 335         ek_add_device_nand();
 336         /* Push Buttons */
 337         ek_add_device_buttons();
 338         /* LEDs */
 339         ek_add_device_leds();
 340
 341         if (machine_is_usb_a9g20()) {
 342                 /* I2C */
 343                 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 344         } else {
 345                 /* I2C */
 346                 at91_add_device_i2c(NULL, 0);
 347                 /* shutdown controller, wakeup button (5 msec low) */
 348                 at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
 349                                 | AT91_SHDW_WKMODE0_LOW
 350                                 | AT91_SHDW_RTTWKEN);
 351         }
 352 }
 353
 354 MACHINE_START(USB_A9263, "CALAO USB_A9263")
 355         /* Maintainer: calao-systems */
 356         .timer          = &at91sam926x_timer,
 357         .map_io         = at91_map_io,
 358         .init_early     = ek_init_early,
 359         .init_irq       = at91_init_irq_default,
 360         .init_machine   = ek_board_init,
 361 MACHINE_END
 362
 363 MACHINE_START(USB_A9260, "CALAO USB_A9260")
 364         /* Maintainer: calao-systems */
 365         .timer          = &at91sam926x_timer,
 366         .map_io         = at91_map_io,
 367         .init_early     = ek_init_early,
 368         .init_irq       = at91_init_irq_default,
 369         .init_machine   = ek_board_init,
 370 MACHINE_END
 371
 372 MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
 373         /* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
 374         .timer          = &at91sam926x_timer,
 375         .map_io         = at91_map_io,
 376         .init_early     = ek_init_early,
 377         .init_irq       = at91_init_irq_default,
 378         .init_machine   = ek_board_init,
 379 MACHINE_END