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