arch/blackfin/mach-bf533/boards/blackstamp.c

   1 /*
   2  * File:         arch/blackfin/mach-bf533/blackstamp.c
   3  * Based on:     arch/blackfin/mach-bf533/stamp.c
   4  * Author:       Benjamin Matthews <bmat@lle.rochester.edu>
   5  *               Aidan Williams <aidan@nicta.com.au>
   6  *
   7  * Created:      2008
   8  * Description:  Board Info File for the BlackStamp
   9  *
  10  * Copyright 2005 National ICT Australia (NICTA)
  11  * Copyright 2004-2008 Analog Devices Inc.
  12  *
  13  * Enter bugs at http://blackfin.uclinux.org/
  14  *
  15  * More info about the BlackStamp at:
  16  *      http://blackfin.uclinux.org/gf/project/blackstamp/
  17  *
  18  * Licensed under the GPL-2 or later.
  19  */
  20
  21 #include <linux/device.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/mtd/mtd.h>
  24 #include <linux/mtd/partitions.h>
  25 #include <linux/mtd/physmap.h>
  26 #include <linux/spi/spi.h>
  27 #include <linux/spi/flash.h>
  28 #include <linux/irq.h>
  29 #include <linux/i2c.h>
  30 #include <asm/dma.h>
  31 #include <asm/bfin5xx_spi.h>
  32 #include <asm/portmux.h>
  33 #include <asm/dpmc.h>
  34
  35 /*
  36  * Name the Board for the /proc/cpuinfo
  37  */
  38 const char bfin_board_name[] = "BlackStamp";
  39
  40 #if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
  41 static struct platform_device rtc_device = {
  42         .name = "rtc-bfin",
  43         .id   = -1,
  44 };
  45 #endif
  46
  47 /*
  48  *  Driver needs to know address, irq and flag pin.
  49  */
  50 #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
  51 static struct resource smc91x_resources[] = {
  52         {
  53                 .name = "smc91x-regs",
  54                 .start = 0x20300300,
  55                 .end = 0x20300300 + 16,
  56                 .flags = IORESOURCE_MEM,
  57         }, {
  58                 .start = IRQ_PF3,
  59                 .end = IRQ_PF3,
  60                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
  61         },
  62 };
  63
  64 static struct platform_device smc91x_device = {
  65         .name = "smc91x",
  66         .id = 0,
  67         .num_resources = ARRAY_SIZE(smc91x_resources),
  68         .resource = smc91x_resources,
  69 };
  70 #endif
  71
  72 #if defined(CONFIG_MTD_M25P80) || defined(CONFIG_MTD_M25P80_MODULE)
  73 static struct mtd_partition bfin_spi_flash_partitions[] = {
  74         {
  75                 .name = "bootloader(spi)",
  76                 .size = 0x00040000,
  77                 .offset = 0,
  78                 .mask_flags = MTD_CAP_ROM
  79         }, {
  80                 .name = "linux kernel(spi)",
  81                 .size = 0x180000,
  82                 .offset = MTDPART_OFS_APPEND,
  83         }, {
  84                 .name = "file system(spi)",
  85                 .size = MTDPART_SIZ_FULL,
  86                 .offset = MTDPART_OFS_APPEND,
  87         }
  88 };
  89
  90 static struct flash_platform_data bfin_spi_flash_data = {
  91         .name = "m25p80",
  92         .parts = bfin_spi_flash_partitions,
  93         .nr_parts = ARRAY_SIZE(bfin_spi_flash_partitions),
  94         .type = "m25p64",
  95 };
  96
  97 /* SPI flash chip (m25p64) */
  98 static struct bfin5xx_spi_chip spi_flash_chip_info = {
  99         .enable_dma = 0,         /* use dma transfer with this chip*/
 100         .bits_per_word = 8,
 101 };
 102 #endif
 103
 104 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
 105 static struct bfin5xx_spi_chip mmc_spi_chip_info = {
 106         .enable_dma = 0,
 107         .bits_per_word = 8,
 108 };
 109 #endif
 110
 111 #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
 112 static struct bfin5xx_spi_chip spidev_chip_info = {
 113         .enable_dma = 0,
 114         .bits_per_word = 8,
 115 };
 116 #endif
 117
 118 static struct spi_board_info bfin_spi_board_info[] __initdata = {
 119 #if defined(CONFIG_MTD_M25P80) || defined(CONFIG_MTD_M25P80_MODULE)
 120         {
 121                 /* the modalias must be the same as spi device driver name */
 122                 .modalias = "m25p80", /* Name of spi_driver for this device */
 123                 .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
 124                 .bus_num = 0, /* Framework bus number */
 125                 .chip_select = 2, /* Framework chip select. */
 126                 .platform_data = &bfin_spi_flash_data,
 127                 .controller_data = &spi_flash_chip_info,
 128                 .mode = SPI_MODE_3,
 129         },
 130 #endif
 131
 132 #if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
 133         {
 134                 .modalias = "mmc_spi",
 135                 .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
 136                 .bus_num = 0,
 137                 .chip_select = 5,
 138                 .controller_data = &mmc_spi_chip_info,
 139                 .mode = SPI_MODE_3,
 140         },
 141 #endif
 142
 143 #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
 144         {
 145                 .modalias = "spidev",
 146                 .max_speed_hz = 3125000,     /* max spi clock (SCK) speed in HZ */
 147                 .bus_num = 0,
 148                 .chip_select = 7,
 149                 .controller_data = &spidev_chip_info,
 150         },
 151 #endif
 152 };
 153
 154 #if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
 155 /* SPI (0) */
 156 static struct resource bfin_spi0_resource[] = {
 157         [0] = {
 158                 .start = SPI0_REGBASE,
 159                 .end   = SPI0_REGBASE + 0xFF,
 160                 .flags = IORESOURCE_MEM,
 161         },
 162         [1] = {
 163                 .start = CH_SPI,
 164                 .end   = CH_SPI,
 165                 .flags = IORESOURCE_DMA,
 166         },
 167         [2] = {
 168                 .start = IRQ_SPI,
 169                 .end   = IRQ_SPI,
 170                 .flags = IORESOURCE_IRQ,
 171         }
 172 };
 173
 174 /* SPI controller data */
 175 static struct bfin5xx_spi_master bfin_spi0_info = {
 176         .num_chipselect = 8,
 177         .enable_dma = 1,  /* master has the ability to do dma transfer */
 178         .pin_req = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0},
 179 };
 180
 181 static struct platform_device bfin_spi0_device = {
 182         .name = "bfin-spi",
 183         .id = 0, /* Bus number */
 184         .num_resources = ARRAY_SIZE(bfin_spi0_resource),
 185         .resource = bfin_spi0_resource,
 186         .dev = {
 187                 .platform_data = &bfin_spi0_info, /* Passed to driver */
 188         },
 189 };
 190 #endif  /* spi master and devices */
 191
 192 #if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
 193 static struct resource bfin_uart_resources[] = {
 194         {
 195                 .start = 0xFFC00400,
 196                 .end = 0xFFC004FF,
 197                 .flags = IORESOURCE_MEM,
 198         },
 199 };
 200
 201 static struct platform_device bfin_uart_device = {
 202         .name = "bfin-uart",
 203         .id = 1,
 204         .num_resources = ARRAY_SIZE(bfin_uart_resources),
 205         .resource = bfin_uart_resources,
 206 };
 207 #endif
 208
 209 #if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
 210 #ifdef CONFIG_BFIN_SIR0
 211 static struct resource bfin_sir0_resources[] = {
 212         {
 213                 .start = 0xFFC00400,
 214                 .end = 0xFFC004FF,
 215                 .flags = IORESOURCE_MEM,
 216         },
 217         {
 218                 .start = IRQ_UART0_RX,
 219                 .end = IRQ_UART0_RX+1,
 220                 .flags = IORESOURCE_IRQ,
 221         },
 222         {
 223                 .start = CH_UART0_RX,
 224                 .end = CH_UART0_RX+1,
 225                 .flags = IORESOURCE_DMA,
 226         },
 227 };
 228
 229 static struct platform_device bfin_sir0_device = {
 230         .name = "bfin_sir",
 231         .id = 0,
 232         .num_resources = ARRAY_SIZE(bfin_sir0_resources),
 233         .resource = bfin_sir0_resources,
 234 };
 235 #endif
 236 #endif
 237
 238 #if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
 239 static struct platform_device bfin_sport0_uart_device = {
 240         .name = "bfin-sport-uart",
 241         .id = 0,
 242 };
 243
 244 static struct platform_device bfin_sport1_uart_device = {
 245         .name = "bfin-sport-uart",
 246         .id = 1,
 247 };
 248 #endif
 249
 250 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 251 #include <linux/input.h>
 252 #include <linux/gpio_keys.h>
 253
 254 static struct gpio_keys_button bfin_gpio_keys_table[] = {
 255         {BTN_0, GPIO_PF4, 0, "gpio-keys: BTN0"},
 256         {BTN_1, GPIO_PF5, 0, "gpio-keys: BTN1"},
 257         {BTN_2, GPIO_PF6, 0, "gpio-keys: BTN2"},
 258 }; /* Mapped to the first three PF Test Points */
 259
 260 static struct gpio_keys_platform_data bfin_gpio_keys_data = {
 261         .buttons        = bfin_gpio_keys_table,
 262         .nbuttons       = ARRAY_SIZE(bfin_gpio_keys_table),
 263 };
 264
 265 static struct platform_device bfin_device_gpiokeys = {
 266         .name      = "gpio-keys",
 267         .dev = {
 268                 .platform_data = &bfin_gpio_keys_data,
 269         },
 270 };
 271 #endif
 272
 273 static struct resource bfin_gpios_resources = {
 274         .start = 0,
 275         .end   = MAX_BLACKFIN_GPIOS - 1,
 276         .flags = IORESOURCE_IRQ,
 277 };
 278
 279 static struct platform_device bfin_gpios_device = {
 280         .name = "simple-gpio",
 281         .id = -1,
 282         .num_resources = 1,
 283         .resource = &bfin_gpios_resources,
 284 };
 285
 286 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
 287 #include <linux/i2c-gpio.h>
 288
 289 static struct i2c_gpio_platform_data i2c_gpio_data = {
 290         .sda_pin                = 8,
 291         .scl_pin                = 9,
 292         .sda_is_open_drain      = 0,
 293         .scl_is_open_drain      = 0,
 294         .udelay                 = 40,
 295 }; /* This hasn't actually been used these pins
 296     * are (currently) free pins on the expansion connector */
 297
 298 static struct platform_device i2c_gpio_device = {
 299         .name           = "i2c-gpio",
 300         .id             = 0,
 301         .dev            = {
 302                 .platform_data  = &i2c_gpio_data,
 303         },
 304 };
 305 #endif
 306
 307 static struct i2c_board_info __initdata bfin_i2c_board_info[] = {
 308 };
 309
 310 static const unsigned int cclk_vlev_datasheet[] =
 311 {
 312         VRPAIR(VLEV_085, 250000000),
 313         VRPAIR(VLEV_090, 376000000),
 314         VRPAIR(VLEV_095, 426000000),
 315         VRPAIR(VLEV_100, 426000000),
 316         VRPAIR(VLEV_105, 476000000),
 317         VRPAIR(VLEV_110, 476000000),
 318         VRPAIR(VLEV_115, 476000000),
 319         VRPAIR(VLEV_120, 600000000),
 320         VRPAIR(VLEV_125, 600000000),
 321         VRPAIR(VLEV_130, 600000000),
 322 };
 323
 324 static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
 325         .tuple_tab = cclk_vlev_datasheet,
 326         .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
 327         .vr_settling_time = 25 /* us */,
 328 };
 329
 330 static struct platform_device bfin_dpmc = {
 331         .name = "bfin dpmc",
 332         .dev = {
 333                 .platform_data = &bfin_dmpc_vreg_data,
 334         },
 335 };
 336
 337 static struct platform_device *stamp_devices[] __initdata = {
 338
 339         &bfin_dpmc,
 340
 341 #if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
 342         &rtc_device,
 343 #endif
 344
 345 #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
 346         &smc91x_device,
 347 #endif
 348
 349
 350 #if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
 351         &bfin_spi0_device,
 352 #endif
 353
 354 #if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
 355         &bfin_uart_device,
 356 #endif
 357
 358 #if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
 359 #ifdef CONFIG_BFIN_SIR0
 360         &bfin_sir0_device,
 361 #endif
 362 #endif
 363
 364 #if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
 365         &bfin_sport0_uart_device,
 366         &bfin_sport1_uart_device,
 367 #endif
 368
 369 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 370         &bfin_device_gpiokeys,
 371 #endif
 372
 373 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
 374         &i2c_gpio_device,
 375 #endif
 376
 377         &bfin_gpios_device,
 378 };
 379
 380 static int __init blackstamp_init(void)
 381 {
 382         int ret;
 383
 384         printk(KERN_INFO "%s(): registering device resources\n", __func__);
 385
 386         i2c_register_board_info(0, bfin_i2c_board_info,
 387                                 ARRAY_SIZE(bfin_i2c_board_info));
 388
 389         ret = platform_add_devices(stamp_devices, ARRAY_SIZE(stamp_devices));
 390         if (ret < 0)
 391                 return ret;
 392
 393 #if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
 394         /* setup BF533_STAMP CPLD to route AMS3 to Ethernet MAC */
 395         bfin_write_FIO_DIR(bfin_read_FIO_DIR() | PF0);
 396         bfin_write_FIO_FLAG_S(PF0);
 397         SSYNC();
 398 #endif
 399
 400         spi_register_board_info(bfin_spi_board_info, ARRAY_SIZE(bfin_spi_board_info));
 401         return 0;
 402 }
 403
 404 arch_initcall(blackstamp_init);