arch/arm/mach-pxa/lpd270.c

   1 /*
   2  * linux/arch/arm/mach-pxa/lpd270.c
   3  *
   4  * Support for the LogicPD PXA270 Card Engine.
   5  * Derived from the mainstone code, which carries these notices:
   6  *
   7  * Author:      Nicolas Pitre
   8  * Created:     Nov 05, 2002
   9  * Copyright:   MontaVista Software Inc.
  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/ioport.h>
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/mtd/partitions.h>
  26 #include <linux/pwm_backlight.h>
  27
  28 #include <asm/types.h>
  29 #include <asm/setup.h>
  30 #include <asm/memory.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/hardware.h>
  33 #include <asm/irq.h>
  34 #include <asm/sizes.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/irq.h>
  39 #include <asm/mach/flash.h>
  40
  41 #include <asm/arch/pxa-regs.h>
  42 #include <asm/arch/pxa2xx-regs.h>
  43 #include <asm/arch/pxa2xx-gpio.h>
  44 #include <asm/arch/lpd270.h>
  45 #include <asm/arch/audio.h>
  46 #include <asm/arch/pxafb.h>
  47 #include <asm/arch/mmc.h>
  48 #include <asm/arch/irda.h>
  49 #include <asm/arch/ohci.h>
  50
  51 #include "generic.h"
  52 #include "devices.h"
  53
  54
  55 static unsigned int lpd270_irq_enabled;
  56
  57 static void lpd270_mask_irq(unsigned int irq)
  58 {
  59         int lpd270_irq = irq - LPD270_IRQ(0);
  60
  61         __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
  62
  63         lpd270_irq_enabled &= ~(1 << lpd270_irq);
  64         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
  65 }
  66
  67 static void lpd270_unmask_irq(unsigned int irq)
  68 {
  69         int lpd270_irq = irq - LPD270_IRQ(0);
  70
  71         lpd270_irq_enabled |= 1 << lpd270_irq;
  72         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
  73 }
  74
  75 static struct irq_chip lpd270_irq_chip = {
  76         .name           = "CPLD",
  77         .ack            = lpd270_mask_irq,
  78         .mask           = lpd270_mask_irq,
  79         .unmask         = lpd270_unmask_irq,
  80 };
  81
  82 static void lpd270_irq_handler(unsigned int irq, struct irq_desc *desc)
  83 {
  84         unsigned long pending;
  85
  86         pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
  87         do {
  88                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
  89                 if (likely(pending)) {
  90                         irq = LPD270_IRQ(0) + __ffs(pending);
  91                         desc = irq_desc + irq;
  92                         desc_handle_irq(irq, desc);
  93
  94                         pending = __raw_readw(LPD270_INT_STATUS) &
  95                                                 lpd270_irq_enabled;
  96                 }
  97         } while (pending);
  98 }
  99
 100 static void __init lpd270_init_irq(void)
 101 {
 102         int irq;
 103
 104         pxa27x_init_irq();
 105
 106         __raw_writew(0, LPD270_INT_MASK);
 107         __raw_writew(0, LPD270_INT_STATUS);
 108
 109         /* setup extra LogicPD PXA270 irqs */
 110         for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
 111                 set_irq_chip(irq, &lpd270_irq_chip);
 112                 set_irq_handler(irq, handle_level_irq);
 113                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 114         }
 115         set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
 116         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 117 }
 118
 119
 120 #ifdef CONFIG_PM
 121 static int lpd270_irq_resume(struct sys_device *dev)
 122 {
 123         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 124         return 0;
 125 }
 126
 127 static struct sysdev_class lpd270_irq_sysclass = {
 128         .name = "cpld_irq",
 129         .resume = lpd270_irq_resume,
 130 };
 131
 132 static struct sys_device lpd270_irq_device = {
 133         .cls = &lpd270_irq_sysclass,
 134 };
 135
 136 static int __init lpd270_irq_device_init(void)
 137 {
 138         int ret = sysdev_class_register(&lpd270_irq_sysclass);
 139         if (ret == 0)
 140                 ret = sysdev_register(&lpd270_irq_device);
 141         return ret;
 142 }
 143
 144 device_initcall(lpd270_irq_device_init);
 145 #endif
 146
 147
 148 static struct resource smc91x_resources[] = {
 149         [0] = {
 150                 .start  = LPD270_ETH_PHYS,
 151                 .end    = (LPD270_ETH_PHYS + 0xfffff),
 152                 .flags  = IORESOURCE_MEM,
 153         },
 154         [1] = {
 155                 .start  = LPD270_ETHERNET_IRQ,
 156                 .end    = LPD270_ETHERNET_IRQ,
 157                 .flags  = IORESOURCE_IRQ,
 158         },
 159 };
 160
 161 static struct platform_device smc91x_device = {
 162         .name           = "smc91x",
 163         .id             = 0,
 164         .num_resources  = ARRAY_SIZE(smc91x_resources),
 165         .resource       = smc91x_resources,
 166 };
 167
 168 static struct platform_device lpd270_audio_device = {
 169         .name           = "pxa2xx-ac97",
 170         .id             = -1,
 171 };
 172
 173 static struct resource lpd270_flash_resources[] = {
 174         [0] = {
 175                 .start  = PXA_CS0_PHYS,
 176                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
 177                 .flags  = IORESOURCE_MEM,
 178         },
 179         [1] = {
 180                 .start  = PXA_CS1_PHYS,
 181                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
 182                 .flags  = IORESOURCE_MEM,
 183         },
 184 };
 185
 186 static struct mtd_partition lpd270_flash0_partitions[] = {
 187         {
 188                 .name =         "Bootloader",
 189                 .size =         0x00040000,
 190                 .offset =       0,
 191                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 192         }, {
 193                 .name =         "Kernel",
 194                 .size =         0x00400000,
 195                 .offset =       0x00040000,
 196         }, {
 197                 .name =         "Filesystem",
 198                 .size =         MTDPART_SIZ_FULL,
 199                 .offset =       0x00440000
 200         },
 201 };
 202
 203 static struct flash_platform_data lpd270_flash_data[2] = {
 204         {
 205                 .name           = "processor-flash",
 206                 .map_name       = "cfi_probe",
 207                 .parts          = lpd270_flash0_partitions,
 208                 .nr_parts       = ARRAY_SIZE(lpd270_flash0_partitions),
 209         }, {
 210                 .name           = "mainboard-flash",
 211                 .map_name       = "cfi_probe",
 212                 .parts          = NULL,
 213                 .nr_parts       = 0,
 214         }
 215 };
 216
 217 static struct platform_device lpd270_flash_device[2] = {
 218         {
 219                 .name           = "pxa2xx-flash",
 220                 .id             = 0,
 221                 .dev = {
 222                         .platform_data  = &lpd270_flash_data[0],
 223                 },
 224                 .resource       = &lpd270_flash_resources[0],
 225                 .num_resources  = 1,
 226         }, {
 227                 .name           = "pxa2xx-flash",
 228                 .id             = 1,
 229                 .dev = {
 230                         .platform_data  = &lpd270_flash_data[1],
 231                 },
 232                 .resource       = &lpd270_flash_resources[1],
 233                 .num_resources  = 1,
 234         },
 235 };
 236
 237 static struct platform_pwm_backlight_data lpd270_backlight_data = {
 238         .pwm_id         = 0,
 239         .max_brightness = 1,
 240         .dft_brightness = 1,
 241         .pwm_period_ns  = 78770,
 242 };
 243
 244 static struct platform_device lpd270_backlight_device = {
 245         .name           = "pwm-backlight",
 246         .dev            = {
 247                 .parent = &pxa27x_device_pwm0.dev,
 248                 .platform_data = &lpd270_backlight_data,
 249         },
 250 };
 251
 252 /* 5.7" TFT QVGA (LoLo display number 1) */
 253 static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
 254         .pixclock               = 150000,
 255         .xres                   = 320,
 256         .yres                   = 240,
 257         .bpp                    = 16,
 258         .hsync_len              = 0x14,
 259         .left_margin            = 0x28,
 260         .right_margin           = 0x0a,
 261         .vsync_len              = 0x02,
 262         .upper_margin           = 0x08,
 263         .lower_margin           = 0x14,
 264         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 265 };
 266
 267 static struct pxafb_mach_info sharp_lq057q3dc02 = {
 268         .modes                  = &sharp_lq057q3dc02_mode,
 269         .num_modes              = 1,
 270         .lccr0                  = 0x07800080,
 271         .lccr3                  = 0x00400000,
 272 };
 273
 274 /* 12.1" TFT SVGA (LoLo display number 2) */
 275 static struct pxafb_mode_info sharp_lq121s1dg31_mode = {
 276         .pixclock               = 50000,
 277         .xres                   = 800,
 278         .yres                   = 600,
 279         .bpp                    = 16,
 280         .hsync_len              = 0x05,
 281         .left_margin            = 0x52,
 282         .right_margin           = 0x05,
 283         .vsync_len              = 0x04,
 284         .upper_margin           = 0x14,
 285         .lower_margin           = 0x0a,
 286         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 287 };
 288
 289 static struct pxafb_mach_info sharp_lq121s1dg31 = {
 290         .modes                  = &sharp_lq121s1dg31_mode,
 291         .num_modes              = 1,
 292         .lccr0                  = 0x07800080,
 293         .lccr3                  = 0x00400000,
 294 };
 295
 296 /* 3.6" TFT QVGA (LoLo display number 3) */
 297 static struct pxafb_mode_info sharp_lq036q1da01_mode = {
 298         .pixclock               = 150000,
 299         .xres                   = 320,
 300         .yres                   = 240,
 301         .bpp                    = 16,
 302         .hsync_len              = 0x0e,
 303         .left_margin            = 0x04,
 304         .right_margin           = 0x0a,
 305         .vsync_len              = 0x03,
 306         .upper_margin           = 0x03,
 307         .lower_margin           = 0x03,
 308         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 309 };
 310
 311 static struct pxafb_mach_info sharp_lq036q1da01 = {
 312         .modes                  = &sharp_lq036q1da01_mode,
 313         .num_modes              = 1,
 314         .lccr0                  = 0x07800080,
 315         .lccr3                  = 0x00400000,
 316 };
 317
 318 /* 6.4" TFT VGA (LoLo display number 5) */
 319 static struct pxafb_mode_info sharp_lq64d343_mode = {
 320         .pixclock               = 25000,
 321         .xres                   = 640,
 322         .yres                   = 480,
 323         .bpp                    = 16,
 324         .hsync_len              = 0x31,
 325         .left_margin            = 0x89,
 326         .right_margin           = 0x19,
 327         .vsync_len              = 0x12,
 328         .upper_margin           = 0x22,
 329         .lower_margin           = 0x00,
 330         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 331 };
 332
 333 static struct pxafb_mach_info sharp_lq64d343 = {
 334         .modes                  = &sharp_lq64d343_mode,
 335         .num_modes              = 1,
 336         .lccr0                  = 0x07800080,
 337         .lccr3                  = 0x00400000,
 338 };
 339
 340 /* 10.4" TFT VGA (LoLo display number 7) */
 341 static struct pxafb_mode_info sharp_lq10d368_mode = {
 342         .pixclock               = 25000,
 343         .xres                   = 640,
 344         .yres                   = 480,
 345         .bpp                    = 16,
 346         .hsync_len              = 0x31,
 347         .left_margin            = 0x89,
 348         .right_margin           = 0x19,
 349         .vsync_len              = 0x12,
 350         .upper_margin           = 0x22,
 351         .lower_margin           = 0x00,
 352         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 353 };
 354
 355 static struct pxafb_mach_info sharp_lq10d368 = {
 356         .modes                  = &sharp_lq10d368_mode,
 357         .num_modes              = 1,
 358         .lccr0                  = 0x07800080,
 359         .lccr3                  = 0x00400000,
 360 };
 361
 362 /* 3.5" TFT QVGA (LoLo display number 8) */
 363 static struct pxafb_mode_info sharp_lq035q7db02_20_mode = {
 364         .pixclock               = 150000,
 365         .xres                   = 240,
 366         .yres                   = 320,
 367         .bpp                    = 16,
 368         .hsync_len              = 0x0e,
 369         .left_margin            = 0x0a,
 370         .right_margin           = 0x0a,
 371         .vsync_len              = 0x03,
 372         .upper_margin           = 0x05,
 373         .lower_margin           = 0x14,
 374         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 375 };
 376
 377 static struct pxafb_mach_info sharp_lq035q7db02_20 = {
 378         .modes                  = &sharp_lq035q7db02_20_mode,
 379         .num_modes              = 1,
 380         .lccr0                  = 0x07800080,
 381         .lccr3                  = 0x00400000,
 382 };
 383
 384 static struct pxafb_mach_info *lpd270_lcd_to_use;
 385
 386 static int __init lpd270_set_lcd(char *str)
 387 {
 388         if (!strnicmp(str, "lq057q3dc02", 11)) {
 389                 lpd270_lcd_to_use = &sharp_lq057q3dc02;
 390         } else if (!strnicmp(str, "lq121s1dg31", 11)) {
 391                 lpd270_lcd_to_use = &sharp_lq121s1dg31;
 392         } else if (!strnicmp(str, "lq036q1da01", 11)) {
 393                 lpd270_lcd_to_use = &sharp_lq036q1da01;
 394         } else if (!strnicmp(str, "lq64d343", 8)) {
 395                 lpd270_lcd_to_use = &sharp_lq64d343;
 396         } else if (!strnicmp(str, "lq10d368", 8)) {
 397                 lpd270_lcd_to_use = &sharp_lq10d368;
 398         } else if (!strnicmp(str, "lq035q7db02-20", 14)) {
 399                 lpd270_lcd_to_use = &sharp_lq035q7db02_20;
 400         } else {
 401                 printk(KERN_INFO "lpd270: unknown lcd panel [%s]\n", str);
 402         }
 403
 404         return 1;
 405 }
 406
 407 __setup("lcd=", lpd270_set_lcd);
 408
 409 static struct platform_device *platform_devices[] __initdata = {
 410         &smc91x_device,
 411         &lpd270_backlight_device,
 412         &lpd270_audio_device,
 413         &lpd270_flash_device[0],
 414         &lpd270_flash_device[1],
 415 };
 416
 417 static int lpd270_ohci_init(struct device *dev)
 418 {
 419         /* setup Port1 GPIO pin. */
 420         pxa_gpio_mode(88 | GPIO_ALT_FN_1_IN);   /* USBHPWR1 */
 421         pxa_gpio_mode(89 | GPIO_ALT_FN_2_OUT);  /* USBHPEN1 */
 422
 423         /* Set the Power Control Polarity Low and Power Sense
 424            Polarity Low to active low. */
 425         UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
 426                 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
 427
 428         return 0;
 429 }
 430
 431 static struct pxaohci_platform_data lpd270_ohci_platform_data = {
 432         .port_mode      = PMM_PERPORT_MODE,
 433         .init           = lpd270_ohci_init,
 434 };
 435
 436 static void __init lpd270_init(void)
 437 {
 438         lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
 439         lpd270_flash_data[1].width = 4;
 440
 441         /*
 442          * System bus arbiter setting:
 443          * - Core_Park
 444          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 445          */
 446         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 447
 448         /*
 449          * On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
 450          */
 451         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
 452         pxa_gpio_mode(GPIO16_PWM0_MD);
 453
 454         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 455
 456         if (lpd270_lcd_to_use != NULL)
 457                 set_pxa_fb_info(lpd270_lcd_to_use);
 458
 459         pxa_set_ohci_info(&lpd270_ohci_platform_data);
 460 }
 461
 462
 463 static struct map_desc lpd270_io_desc[] __initdata = {
 464         {
 465                 .virtual        = LPD270_CPLD_VIRT,
 466                 .pfn            = __phys_to_pfn(LPD270_CPLD_PHYS),
 467                 .length         = LPD270_CPLD_SIZE,
 468                 .type           = MT_DEVICE,
 469         },
 470 };
 471
 472 static void __init lpd270_map_io(void)
 473 {
 474         pxa_map_io();
 475         iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
 476
 477         /* initialize sleep mode regs (wake-up sources, etc) */
 478         PGSR0 = 0x00008800;
 479         PGSR1 = 0x00000002;
 480         PGSR2 = 0x0001FC00;
 481         PGSR3 = 0x00001F81;
 482         PWER  = 0xC0000002;
 483         PRER  = 0x00000002;
 484         PFER  = 0x00000002;
 485
 486         /* for use I SRAM as framebuffer.  */
 487         PSLR |= 0x00000F04;
 488         PCFR  = 0x00000066;
 489 }
 490
 491 MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
 492         /* Maintainer: Peter Barada */
 493         .phys_io        = 0x40000000,
 494         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 495         .boot_params    = 0xa0000100,
 496         .map_io         = lpd270_map_io,
 497         .init_irq       = lpd270_init_irq,
 498         .timer          = &pxa_timer,
 499         .init_machine   = lpd270_init,
 500 MACHINE_END