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/at91_aic.h>
  46 #include <mach/at91sam9_smc.h>
  47 #include <mach/at91_shdwc.h>
  48
  49 #include "sam9_smc.h"
  50 #include "generic.h"
  51
  52
  53 static void __init ek_init_early(void)
  54 {
  55         /* Initialize processor: 12.00 MHz crystal */
  56         at91_initialize(12000000);
  57 }
  58
  59 /*
  60  * USB Host port
  61  */
  62 static struct at91_usbh_data __initdata ek_usbh_data = {
  63         .ports          = 2,
  64         .vbus_pin       = {-EINVAL, -EINVAL},
  65         .overcurrent_pin= {-EINVAL, -EINVAL},
  66 };
  67
  68 /*
  69  * USB Device port
  70  */
  71 static struct at91_udc_data __initdata ek_udc_data = {
  72         .vbus_pin       = AT91_PIN_PB11,
  73         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
  74 };
  75
  76 static void __init ek_add_device_udc(void)
  77 {
  78         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
  79                 ek_udc_data.vbus_pin = AT91_PIN_PC5;
  80
  81         at91_add_device_udc(&ek_udc_data);
  82 }
  83
  84 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
  85 #define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
  86 static int at91_mmc_spi_init(struct device *dev,
  87         irqreturn_t (*detect_int)(int, void *), void *data)
  88 {
  89         /* Configure Interrupt pin as input, no pull-up */
  90         at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
  91         return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
  92                 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
  93                 "mmc-spi-detect", data);
  94 }
  95
  96 static void at91_mmc_spi_exit(struct device *dev, void *data)
  97 {
  98         free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
  99 }
 100
 101 static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
 102         .init = at91_mmc_spi_init,
 103         .exit = at91_mmc_spi_exit,
 104         .detect_delay = 100, /* msecs */
 105 };
 106 #endif
 107
 108 /*
 109  * SPI devices.
 110  */
 111 static struct spi_board_info usb_a9263_spi_devices[] = {
 112         {       /* DataFlash chip */
 113                 .modalias       = "mtd_dataflash",
 114                 .chip_select    = 0,
 115                 .max_speed_hz   = 15 * 1000 * 1000,
 116                 .bus_num        = 0,
 117         }
 118 };
 119
 120 static struct spi_board_info usb_a9g20_spi_devices[] = {
 121 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
 122         {
 123                 .modalias = "mmc_spi",
 124                 .max_speed_hz = 20000000,       /* max spi clock (SCK) speed in HZ */
 125                 .bus_num = 1,
 126                 .chip_select = 0,
 127                 .platform_data = &at91_mmc_spi_pdata,
 128                 .mode = SPI_MODE_3,
 129         },
 130 #endif
 131 };
 132
 133 static void __init ek_add_device_spi(void)
 134 {
 135         if (machine_is_usb_a9263())
 136                 at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
 137         else if (machine_is_usb_a9g20())
 138                 at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
 139 }
 140
 141 /*
 142  * MACB Ethernet device
 143  */
 144 static struct macb_platform_data __initdata ek_macb_data = {
 145         .phy_irq_pin    = AT91_PIN_PE31,
 146         .is_rmii        = 1,
 147 };
 148
 149 static void __init ek_add_device_eth(void)
 150 {
 151         if (machine_is_usb_a9260() || machine_is_usb_a9g20())
 152                 ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
 153
 154         at91_add_device_eth(&ek_macb_data);
 155 }
 156
 157 /*
 158  * NAND flash
 159  */
 160 static struct mtd_partition __initdata ek_nand_partition[] = {
 161         {
 162                 .name   = "barebox",
 163                 .offset = 0,
 164                 .size   = 3 * SZ_128K,
 165         }, {
 166                 .name   = "bareboxenv",
 167                 .offset = MTDPART_OFS_NXTBLK,
 168                 .size   = SZ_128K,
 169         }, {
 170                 .name   = "bareboxenv2",
 171                 .offset = MTDPART_OFS_NXTBLK,
 172                 .size   = SZ_128K,
 173         }, {
 174                 .name   = "oftree",
 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         /* DBGU on ttyS0. (Rx & Tx only) */
 326         at91_register_uart(0, 0, 0);
 327         at91_add_device_serial();
 328         /* USB Host */
 329         at91_add_device_usbh(&ek_usbh_data);
 330         /* USB Device */
 331         ek_add_device_udc();
 332         /* SPI */
 333         ek_add_device_spi();
 334         /* Ethernet */
 335         ek_add_device_eth();
 336         /* NAND */
 337         ek_add_device_nand();
 338         /* Push Buttons */
 339         ek_add_device_buttons();
 340         /* LEDs */
 341         ek_add_device_leds();
 342
 343         if (machine_is_usb_a9g20()) {
 344                 /* I2C */
 345                 at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
 346         } else {
 347                 /* I2C */
 348                 at91_add_device_i2c(NULL, 0);
 349                 /* shutdown controller, wakeup button (5 msec low) */
 350                 at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
 351                                 | AT91_SHDW_WKMODE0_LOW
 352                                 | AT91_SHDW_RTTWKEN);
 353         }
 354 }
 355
 356 MACHINE_START(USB_A9263, "CALAO USB_A9263")
 357         /* Maintainer: calao-systems */
 358         .timer          = &at91sam926x_timer,
 359         .map_io         = at91_map_io,
 360         .handle_irq     = at91_aic_handle_irq,
 361         .init_early     = ek_init_early,
 362         .init_irq       = at91_init_irq_default,
 363         .init_machine   = ek_board_init,
 364 MACHINE_END
 365
 366 MACHINE_START(USB_A9260, "CALAO USB_A9260")
 367         /* Maintainer: calao-systems */
 368         .timer          = &at91sam926x_timer,
 369         .map_io         = at91_map_io,
 370         .handle_irq     = at91_aic_handle_irq,
 371         .init_early     = ek_init_early,
 372         .init_irq       = at91_init_irq_default,
 373         .init_machine   = ek_board_init,
 374 MACHINE_END
 375
 376 MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
 377         /* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
 378         .timer          = &at91sam926x_timer,
 379         .map_io         = at91_map_io,
 380         .handle_irq     = at91_aic_handle_irq,
 381         .init_early     = ek_init_early,
 382         .init_irq       = at91_init_irq_default,
 383         .init_machine   = ek_board_init,
 384 MACHINE_END