arch/arm/mach-pxa/balloon3.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/balloon3.c
   3  *
   4  *  Support for Balloonboard.org Balloon3 board.
   5  *
   6  *  Author:     Nick Bane, Wookey, Jonathan McDowell
   7  *  Created:    June, 2006
   8  *  Copyright:  Toby Churchill Ltd
   9  *  Derived from mainstone.c, by Nico Pitre
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License version 2 as
  13  *  published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/sysdev.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/sched.h>
  21 #include <linux/bitops.h>
  22 #include <linux/fb.h>
  23 #include <linux/gpio.h>
  24 #include <linux/ioport.h>
  25 #include <linux/ucb1400.h>
  26 #include <linux/mtd/mtd.h>
  27 #include <linux/mtd/partitions.h>
  28 #include <linux/types.h>
  29
  30 #include <asm/setup.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/irq.h>
  33 #include <asm/sizes.h>
  34
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/irq.h>
  38 #include <asm/mach/flash.h>
  39
  40 #include <mach/pxa27x.h>
  41 #include <mach/balloon3.h>
  42 #include <mach/audio.h>
  43 #include <mach/pxafb.h>
  44 #include <mach/mmc.h>
  45 #include <mach/udc.h>
  46 #include <mach/pxa27x-udc.h>
  47 #include <mach/irda.h>
  48 #include <mach/ohci.h>
  49
  50 #include <plat/i2c.h>
  51
  52 #include "generic.h"
  53 #include "devices.h"
  54
  55 /******************************************************************************
  56  * Pin configuration
  57  ******************************************************************************/
  58 static unsigned long balloon3_pin_config[] __initdata = {
  59         /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
  60         GPIO42_BTUART_RXD,
  61         GPIO43_BTUART_TXD,
  62         GPIO44_BTUART_CTS,
  63         GPIO45_BTUART_RTS,
  64
  65         /* Reset, configured as GPIO wakeup source */
  66         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
  67
  68         /* LEDs */
  69         GPIO9_GPIO,     /* NAND activity LED */
  70         GPIO10_GPIO,    /* Heartbeat LED */
  71
  72         /* AC97 */
  73         GPIO28_AC97_BITCLK,
  74         GPIO29_AC97_SDATA_IN_0,
  75         GPIO30_AC97_SDATA_OUT,
  76         GPIO31_AC97_SYNC,
  77         GPIO113_AC97_nRESET,
  78         GPIO95_GPIO,
  79
  80         /* MMC */
  81         GPIO32_MMC_CLK,
  82         GPIO92_MMC_DAT_0,
  83         GPIO109_MMC_DAT_1,
  84         GPIO110_MMC_DAT_2,
  85         GPIO111_MMC_DAT_3,
  86         GPIO112_MMC_CMD,
  87
  88         /* USB Host */
  89         GPIO88_USBH1_PWR,
  90         GPIO89_USBH1_PEN,
  91
  92         /* PC Card */
  93         GPIO48_nPOE,
  94         GPIO49_nPWE,
  95         GPIO50_nPIOR,
  96         GPIO51_nPIOW,
  97         GPIO85_nPCE_1,
  98         GPIO54_nPCE_2,
  99         GPIO79_PSKTSEL,
 100         GPIO55_nPREG,
 101         GPIO56_nPWAIT,
 102         GPIO57_nIOIS16,
 103 };
 104
 105 /******************************************************************************
 106  * Compatibility: Parameter parsing
 107  ******************************************************************************/
 108 static unsigned long balloon3_irq_enabled;
 109
 110 static unsigned long balloon3_features_present =
 111                 (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
 112                 (1 << BALLOON3_FEATURE_AUDIO) |
 113                 (1 << BALLOON3_FEATURE_TOPPOLY);
 114
 115 int balloon3_has(enum balloon3_features feature)
 116 {
 117         return (balloon3_features_present & (1 << feature)) ? 1 : 0;
 118 }
 119 EXPORT_SYMBOL_GPL(balloon3_has);
 120
 121 int __init parse_balloon3_features(char *arg)
 122 {
 123         if (!arg)
 124                 return 0;
 125
 126         return strict_strtoul(arg, 0, &balloon3_features_present);
 127 }
 128 early_param("balloon3_features", parse_balloon3_features);
 129
 130 /******************************************************************************
 131  * NOR Flash
 132  ******************************************************************************/
 133 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 134 static struct mtd_partition balloon3_nor_partitions[] = {
 135         {
 136                 .name           = "Flash",
 137                 .offset         = 0x00000000,
 138                 .size           = MTDPART_SIZ_FULL,
 139         }
 140 };
 141
 142 static struct physmap_flash_data balloon3_flash_data[] = {
 143         {
 144                 .width          = 2,    /* bankwidth in bytes */
 145                 .parts          = balloon3_nor_partitions,
 146                 .nr_parts       = ARRAY_SIZE(balloon3_nor_partitions)
 147         }
 148 };
 149
 150 static struct resource balloon3_flash_resource = {
 151         .start  = PXA_CS0_PHYS,
 152         .end    = PXA_CS0_PHYS + SZ_64M - 1,
 153         .flags  = IORESOURCE_MEM,
 154 };
 155
 156 static struct platform_device balloon3_flash = {
 157         .name           = "physmap-flash",
 158         .id             = 0,
 159         .resource       = &balloon3_flash_resource,
 160         .num_resources  = 1,
 161         .dev            = {
 162                 .platform_data = balloon3_flash_data,
 163         },
 164 };
 165 static void __init balloon3_nor_init(void)
 166 {
 167         platform_device_register(&balloon3_flash);
 168 }
 169 #else
 170 static inline void balloon3_nor_init(void) {}
 171 #endif
 172
 173 /******************************************************************************
 174  * Audio and Touchscreen
 175  ******************************************************************************/
 176 #if     defined(CONFIG_TOUCHSCREEN_UCB1400) || \
 177         defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
 178 static struct ucb1400_pdata vpac270_ucb1400_pdata = {
 179         .irq            = IRQ_GPIO(BALLOON3_GPIO_CODEC_IRQ),
 180 };
 181
 182
 183 static struct platform_device balloon3_ucb1400_device = {
 184         .name           = "ucb1400_core",
 185         .id             = -1,
 186         .dev            = {
 187                 .platform_data = &vpac270_ucb1400_pdata,
 188         },
 189 };
 190
 191 static void __init balloon3_ts_init(void)
 192 {
 193         if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
 194                 return;
 195
 196         pxa_set_ac97_info(NULL);
 197         platform_device_register(&balloon3_ucb1400_device);
 198 }
 199 #else
 200 static inline void balloon3_ts_init(void) {}
 201 #endif
 202
 203 /******************************************************************************
 204  * Framebuffer
 205  ******************************************************************************/
 206 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 207 static struct pxafb_mode_info balloon3_lcd_modes[] = {
 208         {
 209                 .pixclock               = 38000,
 210                 .xres                   = 480,
 211                 .yres                   = 640,
 212                 .bpp                    = 16,
 213                 .hsync_len              = 8,
 214                 .left_margin            = 8,
 215                 .right_margin           = 8,
 216                 .vsync_len              = 2,
 217                 .upper_margin           = 4,
 218                 .lower_margin           = 5,
 219                 .sync                   = 0,
 220         },
 221 };
 222
 223 static struct pxafb_mach_info balloon3_lcd_screen = {
 224         .modes                  = balloon3_lcd_modes,
 225         .num_modes              = ARRAY_SIZE(balloon3_lcd_modes),
 226         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 227 };
 228
 229 static void balloon3_backlight_power(int on)
 230 {
 231         gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
 232 }
 233
 234 static void __init balloon3_lcd_init(void)
 235 {
 236         int ret;
 237
 238         if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
 239                 return;
 240
 241         ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
 242         if (ret) {
 243                 pr_err("Requesting BKL-ON GPIO failed!\n");
 244                 goto err;
 245         }
 246
 247         ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
 248         if (ret) {
 249                 pr_err("Setting BKL-ON GPIO direction failed!\n");
 250                 goto err2;
 251         }
 252
 253         balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
 254         set_pxa_fb_info(&balloon3_lcd_screen);
 255         return;
 256
 257 err2:
 258         gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
 259 err:
 260         return;
 261 }
 262 #else
 263 static inline void balloon3_lcd_init(void) {}
 264 #endif
 265
 266 /******************************************************************************
 267  * SD/MMC card controller
 268  ******************************************************************************/
 269 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
 270 static struct pxamci_platform_data balloon3_mci_platform_data = {
 271         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 272         .gpio_card_detect       = -1,
 273         .gpio_card_ro           = -1,
 274         .gpio_power             = -1,
 275         .detect_delay_ms        = 200,
 276 };
 277
 278 static void __init balloon3_mmc_init(void)
 279 {
 280         pxa_set_mci_info(&balloon3_mci_platform_data);
 281 }
 282 #else
 283 static inline void balloon3_mmc_init(void) {}
 284 #endif
 285
 286 /******************************************************************************
 287  * USB Gadget
 288  ******************************************************************************/
 289 #if defined(CONFIG_USB_GADGET_PXA27X)||defined(CONFIG_USB_GADGET_PXA27X_MODULE)
 290 static void balloon3_udc_command(int cmd)
 291 {
 292         if (cmd == PXA2XX_UDC_CMD_CONNECT)
 293                 UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
 294         else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
 295                 UP2OCR &= ~UP2OCR_DPPUE;
 296 }
 297
 298 static int balloon3_udc_is_connected(void)
 299 {
 300         return 1;
 301 }
 302
 303 static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
 304         .udc_command            = balloon3_udc_command,
 305         .udc_is_connected       = balloon3_udc_is_connected,
 306         .gpio_pullup            = -1,
 307 };
 308
 309 static void __init balloon3_udc_init(void)
 310 {
 311         pxa_set_udc_info(&balloon3_udc_info);
 312         platform_device_register(&balloon3_gpio_vbus);
 313 }
 314 #else
 315 static inline void balloon3_udc_init(void) {}
 316 #endif
 317
 318 /******************************************************************************
 319  * IrDA
 320  ******************************************************************************/
 321 #if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
 322 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
 323         .transceiver_cap        = IR_FIRMODE | IR_SIRMODE | IR_OFF,
 324 };
 325
 326 static void __init balloon3_irda_init(void)
 327 {
 328         pxa_set_ficp_info(&balloon3_ficp_platform_data);
 329 }
 330 #else
 331 static inline void balloon3_irda_init(void) {}
 332 #endif
 333
 334 /******************************************************************************
 335  * USB Host
 336  ******************************************************************************/
 337 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 338 static struct pxaohci_platform_data balloon3_ohci_info = {
 339         .port_mode      = PMM_PERPORT_MODE,
 340         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 341 };
 342
 343 static void __init balloon3_uhc_init(void)
 344 {
 345         if (!balloon3_has(BALLOON3_FEATURE_OHCI))
 346                 return;
 347         pxa_set_ohci_info(&balloon3_ohci_info);
 348 }
 349 #else
 350 static inline void balloon3_uhc_init(void) {}
 351 #endif
 352
 353 /******************************************************************************
 354  * LEDs
 355  ******************************************************************************/
 356 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 357 struct gpio_led balloon3_gpio_leds[] = {
 358         {
 359                 .name                   = "balloon3:green:idle",
 360                 .default_trigger        = "heartbeat",
 361                 .gpio                   = BALLOON3_GPIO_LED_IDLE,
 362                 .active_low             = 1,
 363         }, {
 364                 .name                   = "balloon3:green:nand",
 365                 .default_trigger        = "nand-disk",
 366                 .gpio                   = BALLOON3_GPIO_LED_NAND,
 367                 .active_low             = 1,
 368         },
 369 };
 370
 371 static struct gpio_led_platform_data balloon3_gpio_led_info = {
 372         .leds           = balloon3_gpio_leds,
 373         .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
 374 };
 375
 376 static struct platform_device balloon3_leds = {
 377         .name   = "leds-gpio",
 378         .id     = -1,
 379         .dev    = {
 380                 .platform_data  = &balloon3_gpio_led_info,
 381         }
 382 };
 383
 384 static void __init balloon3_leds_init(void)
 385 {
 386         platform_device_register(&balloon3_leds);
 387 }
 388 #else
 389 static inline void balloon3_leds_init(void) {}
 390 #endif
 391
 392 /******************************************************************************
 393  * FPGA IRQ
 394  ******************************************************************************/
 395 static void balloon3_mask_irq(unsigned int irq)
 396 {
 397         int balloon3_irq = (irq - BALLOON3_IRQ(0));
 398         balloon3_irq_enabled &= ~(1 << balloon3_irq);
 399         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 400 }
 401
 402 static void balloon3_unmask_irq(unsigned int irq)
 403 {
 404         int balloon3_irq = (irq - BALLOON3_IRQ(0));
 405         balloon3_irq_enabled |= (1 << balloon3_irq);
 406         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
 407 }
 408
 409 static struct irq_chip balloon3_irq_chip = {
 410         .name           = "FPGA",
 411         .ack            = balloon3_mask_irq,
 412         .mask           = balloon3_mask_irq,
 413         .unmask         = balloon3_unmask_irq,
 414 };
 415
 416 static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
 417 {
 418         unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 419                                         balloon3_irq_enabled;
 420         do {
 421                 /* clear useless edge notification */
 422                 if (desc->chip->ack)
 423                         desc->chip->ack(BALLOON3_AUX_NIRQ);
 424                 while (pending) {
 425                         irq = BALLOON3_IRQ(0) + __ffs(pending);
 426                         generic_handle_irq(irq);
 427                         pending &= pending - 1;
 428                 }
 429                 pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
 430                                 balloon3_irq_enabled;
 431         } while (pending);
 432 }
 433
 434 static void __init balloon3_init_irq(void)
 435 {
 436         int irq;
 437
 438         pxa27x_init_irq();
 439         /* setup extra Balloon3 irqs */
 440         for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
 441                 set_irq_chip(irq, &balloon3_irq_chip);
 442                 set_irq_handler(irq, handle_level_irq);
 443                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 444         }
 445
 446         set_irq_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
 447         set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
 448
 449         pr_debug("%s: chained handler installed - irq %d automatically "
 450                 "enabled\n", __func__, BALLOON3_AUX_NIRQ);
 451 }
 452
 453 /******************************************************************************
 454  * Machine init
 455  ******************************************************************************/
 456 static void __init balloon3_init(void)
 457 {
 458         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 459
 460         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
 461
 462         pxa_set_ffuart_info(NULL);
 463         pxa_set_btuart_info(NULL);
 464         pxa_set_stuart_info(NULL);
 465
 466         pxa_set_i2c_info(NULL);
 467
 468         balloon3_irda_init();
 469         balloon3_lcd_init();
 470         balloon3_leds_init();
 471         balloon3_mmc_init();
 472         balloon3_nor_init();
 473         balloon3_ts_init();
 474         balloon3_udc_init();
 475         balloon3_uhc_init();
 476 }
 477
 478 static struct map_desc balloon3_io_desc[] __initdata = {
 479         {       /* CPLD/FPGA */
 480                 .virtual        =  BALLOON3_FPGA_VIRT,
 481                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
 482                 .length         = BALLOON3_FPGA_LENGTH,
 483                 .type           = MT_DEVICE,
 484         },
 485 };
 486
 487 static void __init balloon3_map_io(void)
 488 {
 489         pxa_map_io();
 490         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
 491 }
 492
 493 MACHINE_START(BALLOON3, "Balloon3")
 494         /* Maintainer: Nick Bane. */
 495         .phys_io        = 0x40000000,
 496         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 497         .map_io         = balloon3_map_io,
 498         .init_irq       = balloon3_init_irq,
 499         .timer          = &pxa_timer,
 500         .init_machine   = balloon3_init,
 501         .boot_params    = PHYS_OFFSET + 0x100,
 502 MACHINE_END