arch/arm/mach-omap1/board-osk.c

   1 /*
   2  * linux/arch/arm/mach-omap1/board-osk.c
   3  *
   4  * Board specific init for OMAP5912 OSK
   5  *
   6  * Written by Dirk Behme <dirk.behme@de.bosch.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  *
  13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  14  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  15  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
  16  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  19  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  * You should have received a copy of the  GNU General Public License along
  25  * with this program; if not, write  to the Free Software Foundation, Inc.,
  26  * 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/kernel.h>
  30 #include <linux/init.h>
  31 #include <linux/platform_device.h>
  32 #include <linux/interrupt.h>
  33 #include <linux/irq.h>
  34 #include <linux/i2c.h>
  35 #include <linux/leds.h>
  36
  37 #include <linux/mtd/mtd.h>
  38 #include <linux/mtd/partitions.h>
  39
  40 #include <linux/i2c/tps65010.h>
  41
  42 #include <mach/hardware.h>
  43 #include <asm/gpio.h>
  44
  45 #include <asm/mach-types.h>
  46 #include <asm/mach/arch.h>
  47 #include <asm/mach/map.h>
  48 #include <asm/mach/flash.h>
  49
  50 #include <mach/usb.h>
  51 #include <mach/mux.h>
  52 #include <mach/tc.h>
  53 #include <mach/common.h>
  54
  55 static struct mtd_partition osk_partitions[] = {
  56         /* bootloader (U-Boot, etc) in first sector */
  57         {
  58               .name             = "bootloader",
  59               .offset           = 0,
  60               .size             = SZ_128K,
  61               .mask_flags       = MTD_WRITEABLE, /* force read-only */
  62         },
  63         /* bootloader params in the next sector */
  64         {
  65               .name             = "params",
  66               .offset           = MTDPART_OFS_APPEND,
  67               .size             = SZ_128K,
  68               .mask_flags       = 0,
  69         }, {
  70               .name             = "kernel",
  71               .offset           = MTDPART_OFS_APPEND,
  72               .size             = SZ_2M,
  73               .mask_flags       = 0
  74         }, {
  75               .name             = "filesystem",
  76               .offset           = MTDPART_OFS_APPEND,
  77               .size             = MTDPART_SIZ_FULL,
  78               .mask_flags       = 0
  79         }
  80 };
  81
  82 static struct flash_platform_data osk_flash_data = {
  83         .map_name       = "cfi_probe",
  84         .width          = 2,
  85         .parts          = osk_partitions,
  86         .nr_parts       = ARRAY_SIZE(osk_partitions),
  87 };
  88
  89 static struct resource osk_flash_resource = {
  90         /* this is on CS3, wherever it's mapped */
  91         .flags          = IORESOURCE_MEM,
  92 };
  93
  94 static struct platform_device osk5912_flash_device = {
  95         .name           = "omapflash",
  96         .id             = 0,
  97         .dev            = {
  98                 .platform_data  = &osk_flash_data,
  99         },
 100         .num_resources  = 1,
 101         .resource       = &osk_flash_resource,
 102 };
 103
 104 static struct resource osk5912_smc91x_resources[] = {
 105         [0] = {
 106                 .start  = OMAP_OSK_ETHR_START,          /* Physical */
 107                 .end    = OMAP_OSK_ETHR_START + 0xf,
 108                 .flags  = IORESOURCE_MEM,
 109         },
 110         [1] = {
 111                 .start  = OMAP_GPIO_IRQ(0),
 112                 .end    = OMAP_GPIO_IRQ(0),
 113                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 114         },
 115 };
 116
 117 static struct platform_device osk5912_smc91x_device = {
 118         .name           = "smc91x",
 119         .id             = -1,
 120         .num_resources  = ARRAY_SIZE(osk5912_smc91x_resources),
 121         .resource       = osk5912_smc91x_resources,
 122 };
 123
 124 static struct resource osk5912_cf_resources[] = {
 125         [0] = {
 126                 .start  = OMAP_GPIO_IRQ(62),
 127                 .end    = OMAP_GPIO_IRQ(62),
 128                 .flags  = IORESOURCE_IRQ,
 129         },
 130 };
 131
 132 static struct platform_device osk5912_cf_device = {
 133         .name           = "omap_cf",
 134         .id             = -1,
 135         .dev = {
 136                 .platform_data  = (void *) 2 /* CS2 */,
 137         },
 138         .num_resources  = ARRAY_SIZE(osk5912_cf_resources),
 139         .resource       = osk5912_cf_resources,
 140 };
 141
 142 static struct platform_device *osk5912_devices[] __initdata = {
 143         &osk5912_flash_device,
 144         &osk5912_smc91x_device,
 145         &osk5912_cf_device,
 146 };
 147
 148 static struct gpio_led tps_leds[] = {
 149         /* NOTE:  D9 and D2 have hardware blink support.
 150          * Also, D9 requires non-battery power.
 151          */
 152         { .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
 153                         .default_trigger = "ide-disk", },
 154         { .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
 155         { .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
 156                         .default_trigger = "heartbeat", },
 157 };
 158
 159 static struct gpio_led_platform_data tps_leds_data = {
 160         .num_leds       = 3,
 161         .leds           = tps_leds,
 162 };
 163
 164 static struct platform_device osk5912_tps_leds = {
 165         .name                   = "leds-gpio",
 166         .id                     = 0,
 167         .dev.platform_data      = &tps_leds_data,
 168 };
 169
 170 static int osk_tps_setup(struct i2c_client *client, void *context)
 171 {
 172         /* Set GPIO 1 HIGH to disable VBUS power supply;
 173          * OHCI driver powers it up/down as needed.
 174          */
 175         gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
 176         gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);
 177
 178         /* Set GPIO 2 high so LED D3 is off by default */
 179         tps65010_set_gpio_out_value(GPIO2, HIGH);
 180
 181         /* Set GPIO 3 low to take ethernet out of reset */
 182         gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
 183         gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);
 184
 185         /* GPIO4 is VDD_DSP */
 186         gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
 187         gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
 188         /* REVISIT if DSP support isn't configured, power it off ... */
 189
 190         /* Let LED1 (D9) blink; leds-gpio may override it */
 191         tps65010_set_led(LED1, BLINK);
 192
 193         /* Set LED2 off by default */
 194         tps65010_set_led(LED2, OFF);
 195
 196         /* Enable LOW_PWR handshake */
 197         tps65010_set_low_pwr(ON);
 198
 199         /* Switch VLDO2 to 3.0V for AIC23 */
 200         tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
 201                         | TPS_LDO1_ENABLE);
 202
 203         /* register these three LEDs */
 204         osk5912_tps_leds.dev.parent = &client->dev;
 205         platform_device_register(&osk5912_tps_leds);
 206
 207         return 0;
 208 }
 209
 210 static struct tps65010_board tps_board = {
 211         .base           = OSK_TPS_GPIO_BASE,
 212         .outmask        = 0x0f,
 213         .setup          = osk_tps_setup,
 214 };
 215
 216 static struct i2c_board_info __initdata osk_i2c_board_info[] = {
 217         {
 218                 I2C_BOARD_INFO("tps65010", 0x48),
 219                 .irq            = OMAP_GPIO_IRQ(OMAP_MPUIO(1)),
 220                 .platform_data  = &tps_board,
 221
 222         },
 223         {
 224                 I2C_BOARD_INFO("tlv320aic23", 0x1B),
 225         },
 226 };
 227
 228 static void __init osk_init_smc91x(void)
 229 {
 230         u32 l;
 231
 232         if ((gpio_request(0, "smc_irq")) < 0) {
 233                 printk("Error requesting gpio 0 for smc91x irq\n");
 234                 return;
 235         }
 236
 237         /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
 238         l = omap_readl(EMIFS_CCS(1));
 239         l |= 0x3;
 240         omap_writel(l, EMIFS_CCS(1));
 241 }
 242
 243 static void __init osk_init_cf(void)
 244 {
 245         omap_cfg_reg(M7_1610_GPIO62);
 246         if ((gpio_request(62, "cf_irq")) < 0) {
 247                 printk("Error requesting gpio 62 for CF irq\n");
 248                 return;
 249         }
 250         /* the CF I/O IRQ is really active-low */
 251         set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
 252 }
 253
 254 static void __init osk_init_irq(void)
 255 {
 256         omap1_init_common_hw();
 257         omap_init_irq();
 258         omap_gpio_init();
 259         osk_init_smc91x();
 260         osk_init_cf();
 261 }
 262
 263 static struct omap_usb_config osk_usb_config __initdata = {
 264         /* has usb host connector (A) ... for development it can also
 265          * be used, with a NONSTANDARD gender-bending cable/dongle, as
 266          * a peripheral.
 267          */
 268 #ifdef  CONFIG_USB_GADGET_OMAP
 269         .register_dev   = 1,
 270         .hmc_mode       = 0,
 271 #else
 272         .register_host  = 1,
 273         .hmc_mode       = 16,
 274         .rwc            = 1,
 275 #endif
 276         .pins[0]        = 2,
 277 };
 278
 279 static struct omap_uart_config osk_uart_config __initdata = {
 280         .enabled_uarts = (1 << 0),
 281 };
 282
 283 #ifdef  CONFIG_OMAP_OSK_MISTRAL
 284 static struct omap_lcd_config osk_lcd_config __initdata = {
 285         .ctrl_name      = "internal",
 286 };
 287 #endif
 288
 289 static struct omap_board_config_kernel osk_config[] __initdata = {
 290         { OMAP_TAG_USB,           &osk_usb_config },
 291         { OMAP_TAG_UART,                &osk_uart_config },
 292 #ifdef  CONFIG_OMAP_OSK_MISTRAL
 293         { OMAP_TAG_LCD,                 &osk_lcd_config },
 294 #endif
 295 };
 296
 297 #ifdef  CONFIG_OMAP_OSK_MISTRAL
 298
 299 #include <linux/input.h>
 300 #include <linux/i2c/at24.h>
 301 #include <linux/spi/spi.h>
 302 #include <linux/spi/ads7846.h>
 303
 304 #include <mach/keypad.h>
 305
 306 static struct at24_platform_data at24c04 = {
 307         .byte_len       = SZ_4K / 8,
 308         .page_size      = 16,
 309 };
 310
 311 static struct i2c_board_info __initdata mistral_i2c_board_info[] = {
 312         {
 313                 /* NOTE:  powered from LCD supply */
 314                 I2C_BOARD_INFO("24c04", 0x50),
 315                 .platform_data  = &at24c04,
 316         },
 317         /* TODO when driver support is ready:
 318          *  - optionally ov9640 camera sensor at 0x30
 319          */
 320 };
 321
 322 static const int osk_keymap[] = {
 323         /* KEY(col, row, code) */
 324         KEY(0, 0, KEY_F1),              /* SW4 */
 325         KEY(0, 3, KEY_UP),              /* (sw2/up) */
 326         KEY(1, 1, KEY_LEFTCTRL),        /* SW5 */
 327         KEY(1, 2, KEY_LEFT),            /* (sw2/left) */
 328         KEY(2, 0, KEY_SPACE),           /* SW3 */
 329         KEY(2, 1, KEY_ESC),             /* SW6 */
 330         KEY(2, 2, KEY_DOWN),            /* (sw2/down) */
 331         KEY(3, 2, KEY_ENTER),           /* (sw2/select) */
 332         KEY(3, 3, KEY_RIGHT),           /* (sw2/right) */
 333         0
 334 };
 335
 336 static struct omap_kp_platform_data osk_kp_data = {
 337         .rows           = 8,
 338         .cols           = 8,
 339         .keymap         = (int *) osk_keymap,
 340         .keymapsize     = ARRAY_SIZE(osk_keymap),
 341         .delay          = 9,
 342 };
 343
 344 static struct resource osk5912_kp_resources[] = {
 345         [0] = {
 346                 .start  = INT_KEYBOARD,
 347                 .end    = INT_KEYBOARD,
 348                 .flags  = IORESOURCE_IRQ,
 349         },
 350 };
 351
 352 static struct platform_device osk5912_kp_device = {
 353         .name           = "omap-keypad",
 354         .id             = -1,
 355         .dev            = {
 356                 .platform_data = &osk_kp_data,
 357         },
 358         .num_resources  = ARRAY_SIZE(osk5912_kp_resources),
 359         .resource       = osk5912_kp_resources,
 360 };
 361
 362 static struct omap_backlight_config mistral_bl_data = {
 363         .default_intensity      = 0xa0,
 364 };
 365
 366 static struct platform_device mistral_bl_device = {
 367         .name           = "omap-bl",
 368         .id             = -1,
 369         .dev            = {
 370                 .platform_data = &mistral_bl_data,
 371         },
 372 };
 373
 374 static struct platform_device osk5912_lcd_device = {
 375         .name           = "lcd_osk",
 376         .id             = -1,
 377 };
 378
 379 static struct platform_device *mistral_devices[] __initdata = {
 380         &osk5912_kp_device,
 381         &mistral_bl_device,
 382         &osk5912_lcd_device,
 383 };
 384
 385 static int mistral_get_pendown_state(void)
 386 {
 387         return !gpio_get_value(4);
 388 }
 389
 390 static const struct ads7846_platform_data mistral_ts_info = {
 391         .model                  = 7846,
 392         .vref_delay_usecs       = 100,  /* internal, no capacitor */
 393         .x_plate_ohms           = 419,
 394         .y_plate_ohms           = 486,
 395         .get_pendown_state      = mistral_get_pendown_state,
 396 };
 397
 398 static struct spi_board_info __initdata mistral_boardinfo[] = { {
 399         /* MicroWire (bus 2) CS0 has an ads7846e */
 400         .modalias               = "ads7846",
 401         .platform_data          = &mistral_ts_info,
 402         .irq                    = OMAP_GPIO_IRQ(4),
 403         .max_speed_hz           = 120000 /* max sample rate at 3V */
 404                                         * 26 /* command + data + overhead */,
 405         .bus_num                = 2,
 406         .chip_select            = 0,
 407 } };
 408
 409 #ifdef  CONFIG_PM
 410 static irqreturn_t
 411 osk_mistral_wake_interrupt(int irq, void *ignored)
 412 {
 413         return IRQ_HANDLED;
 414 }
 415 #endif
 416
 417 static void __init osk_mistral_init(void)
 418 {
 419         /* NOTE:  we could actually tell if there's a Mistral board
 420          * attached, e.g. by trying to read something from the ads7846.
 421          * But this arch_init() code is too early for that, since we
 422          * can't talk to the ads or even the i2c eeprom.
 423          */
 424
 425         /* parallel camera interface */
 426         omap_cfg_reg(J15_1610_CAM_LCLK);
 427         omap_cfg_reg(J18_1610_CAM_D7);
 428         omap_cfg_reg(J19_1610_CAM_D6);
 429         omap_cfg_reg(J14_1610_CAM_D5);
 430         omap_cfg_reg(K18_1610_CAM_D4);
 431         omap_cfg_reg(K19_1610_CAM_D3);
 432         omap_cfg_reg(K15_1610_CAM_D2);
 433         omap_cfg_reg(K14_1610_CAM_D1);
 434         omap_cfg_reg(L19_1610_CAM_D0);
 435         omap_cfg_reg(L18_1610_CAM_VS);
 436         omap_cfg_reg(L15_1610_CAM_HS);
 437         omap_cfg_reg(M19_1610_CAM_RSTZ);
 438         omap_cfg_reg(Y15_1610_CAM_OUTCLK);
 439
 440         /* serial camera interface */
 441         omap_cfg_reg(H19_1610_CAM_EXCLK);
 442         omap_cfg_reg(W13_1610_CCP_CLKM);
 443         omap_cfg_reg(Y12_1610_CCP_CLKP);
 444         /* CCP_DATAM CONFLICTS WITH UART1.TX (and serial console) */
 445         /* omap_cfg_reg(Y14_1610_CCP_DATAM); */
 446         omap_cfg_reg(W14_1610_CCP_DATAP);
 447
 448         /* CAM_PWDN */
 449         if (gpio_request(11, "cam_pwdn") == 0) {
 450                 omap_cfg_reg(N20_1610_GPIO11);
 451                 gpio_direction_output(11, 0);
 452         } else
 453                 pr_debug("OSK+Mistral: CAM_PWDN is awol\n");
 454
 455
 456         /* omap_cfg_reg(P19_1610_GPIO6); */     /* BUSY */
 457         gpio_request(6, "ts_busy");
 458         gpio_direction_input(6);
 459
 460         omap_cfg_reg(P20_1610_GPIO4);   /* PENIRQ */
 461         gpio_request(4, "ts_int");
 462         gpio_direction_input(4);
 463         set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING);
 464
 465         spi_register_board_info(mistral_boardinfo,
 466                         ARRAY_SIZE(mistral_boardinfo));
 467
 468         /* the sideways button (SW1) is for use as a "wakeup" button
 469          *
 470          * NOTE:  The Mistral board has the wakeup button (SW1) wired
 471          * to the LCD 3.3V rail, which is powered down during suspend.
 472          * To allow this button to wake up the omap, work around this
 473          * HW bug by rewiring SW1 to use the main 3.3V rail.
 474          */
 475         omap_cfg_reg(N15_1610_MPUIO2);
 476         if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) {
 477                 int ret = 0;
 478                 int irq = gpio_to_irq(OMAP_MPUIO(2));
 479
 480                 gpio_direction_input(OMAP_MPUIO(2));
 481                 set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
 482 #ifdef  CONFIG_PM
 483                 /* share the IRQ in case someone wants to use the
 484                  * button for more than wakeup from system sleep.
 485                  */
 486                 ret = request_irq(irq,
 487                                 &osk_mistral_wake_interrupt,
 488                                 IRQF_SHARED, "mistral_wakeup",
 489                                 &osk_mistral_wake_interrupt);
 490                 if (ret != 0) {
 491                         gpio_free(OMAP_MPUIO(2));
 492                         printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n",
 493                                 ret);
 494                 } else
 495                         enable_irq_wake(irq);
 496 #endif
 497         } else
 498                 printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n");
 499
 500         /* LCD:  backlight, and power; power controls other devices on the
 501          * board, like the touchscreen, EEPROM, and wakeup (!) switch.
 502          */
 503         omap_cfg_reg(PWL);
 504         if (gpio_request(2, "lcd_pwr") == 0)
 505                 gpio_direction_output(2, 1);
 506
 507         i2c_register_board_info(1, mistral_i2c_board_info,
 508                         ARRAY_SIZE(mistral_i2c_board_info));
 509
 510         platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
 511 }
 512 #else
 513 static void __init osk_mistral_init(void) { }
 514 #endif
 515
 516 #define EMIFS_CS3_VAL   (0x88013141)
 517
 518 static void __init osk_init(void)
 519 {
 520         u32 l;
 521
 522         /* Workaround for wrong CS3 (NOR flash) timing
 523          * There are some U-Boot versions out there which configure
 524          * wrong CS3 memory timings. This mainly leads to CRC
 525          * or similar errors if you use NOR flash (e.g. with JFFS2)
 526          */
 527         l = omap_readl(EMIFS_CCS(3));
 528         if (l != EMIFS_CS3_VAL)
 529                 omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
 530
 531         osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
 532         osk_flash_resource.end += SZ_32M - 1;
 533         platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
 534         omap_board_config = osk_config;
 535         omap_board_config_size = ARRAY_SIZE(osk_config);
 536
 537         l = omap_readl(USB_TRANSCEIVER_CTRL);
 538         l |= (3 << 1);
 539         omap_writel(l, USB_TRANSCEIVER_CTRL);
 540
 541         /* irq for tps65010 chip */
 542         /* bootloader effectively does:  omap_cfg_reg(U19_1610_MPUIO1); */
 543         if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
 544                 gpio_direction_input(OMAP_MPUIO(1));
 545
 546         omap_serial_init();
 547         omap_register_i2c_bus(1, 400, osk_i2c_board_info,
 548                               ARRAY_SIZE(osk_i2c_board_info));
 549         osk_mistral_init();
 550 }
 551
 552 static void __init osk_map_io(void)
 553 {
 554         omap1_map_common_io();
 555 }
 556
 557 MACHINE_START(OMAP_OSK, "TI-OSK")
 558         /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
 559         .phys_io        = 0xfff00000,
 560         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 561         .boot_params    = 0x10000100,
 562         .map_io         = osk_map_io,
 563         .init_irq       = osk_init_irq,
 564         .init_machine   = osk_init,
 565         .timer          = &omap_timer,
 566 MACHINE_END