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
  27 #include <asm/types.h>
  28 #include <asm/setup.h>
  29 #include <asm/memory.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/hardware.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 <asm/arch/pxa-regs.h>
  41 #include <asm/arch/lpd270.h>
  42 #include <asm/arch/audio.h>
  43 #include <asm/arch/pxafb.h>
  44 #include <asm/arch/mmc.h>
  45 #include <asm/arch/irda.h>
  46 #include <asm/arch/ohci.h>
  47
  48 #include "generic.h"
  49
  50
  51 static unsigned int lpd270_irq_enabled;
  52
  53 static void lpd270_mask_irq(unsigned int irq)
  54 {
  55         int lpd270_irq = irq - LPD270_IRQ(0);
  56
  57         __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
  58
  59         lpd270_irq_enabled &= ~(1 << lpd270_irq);
  60         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
  61 }
  62
  63 static void lpd270_unmask_irq(unsigned int irq)
  64 {
  65         int lpd270_irq = irq - LPD270_IRQ(0);
  66
  67         lpd270_irq_enabled |= 1 << lpd270_irq;
  68         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
  69 }
  70
  71 static struct irq_chip lpd270_irq_chip = {
  72         .name           = "CPLD",
  73         .ack            = lpd270_mask_irq,
  74         .mask           = lpd270_mask_irq,
  75         .unmask         = lpd270_unmask_irq,
  76 };
  77
  78 static void lpd270_irq_handler(unsigned int irq, struct irq_desc *desc)
  79 {
  80         unsigned long pending;
  81
  82         pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
  83         do {
  84                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
  85                 if (likely(pending)) {
  86                         irq = LPD270_IRQ(0) + __ffs(pending);
  87                         desc = irq_desc + irq;
  88                         desc_handle_irq(irq, desc);
  89
  90                         pending = __raw_readw(LPD270_INT_STATUS) &
  91                                                 lpd270_irq_enabled;
  92                 }
  93         } while (pending);
  94 }
  95
  96 static void __init lpd270_init_irq(void)
  97 {
  98         int irq;
  99
 100         pxa_init_irq();
 101
 102         __raw_writew(0, LPD270_INT_MASK);
 103         __raw_writew(0, LPD270_INT_STATUS);
 104
 105         /* setup extra LogicPD PXA270 irqs */
 106         for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
 107                 set_irq_chip(irq, &lpd270_irq_chip);
 108                 set_irq_handler(irq, handle_level_irq);
 109                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 110         }
 111         set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
 112         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 113 }
 114
 115
 116 #ifdef CONFIG_PM
 117 static int lpd270_irq_resume(struct sys_device *dev)
 118 {
 119         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 120         return 0;
 121 }
 122
 123 static struct sysdev_class lpd270_irq_sysclass = {
 124         set_kset_name("cpld_irq"),
 125         .resume = lpd270_irq_resume,
 126 };
 127
 128 static struct sys_device lpd270_irq_device = {
 129         .cls = &lpd270_irq_sysclass,
 130 };
 131
 132 static int __init lpd270_irq_device_init(void)
 133 {
 134         int ret = sysdev_class_register(&lpd270_irq_sysclass);
 135         if (ret == 0)
 136                 ret = sysdev_register(&lpd270_irq_device);
 137         return ret;
 138 }
 139
 140 device_initcall(lpd270_irq_device_init);
 141 #endif
 142
 143
 144 static struct resource smc91x_resources[] = {
 145         [0] = {
 146                 .start  = LPD270_ETH_PHYS,
 147                 .end    = (LPD270_ETH_PHYS + 0xfffff),
 148                 .flags  = IORESOURCE_MEM,
 149         },
 150         [1] = {
 151                 .start  = LPD270_ETHERNET_IRQ,
 152                 .end    = LPD270_ETHERNET_IRQ,
 153                 .flags  = IORESOURCE_IRQ,
 154         },
 155 };
 156
 157 static struct platform_device smc91x_device = {
 158         .name           = "smc91x",
 159         .id             = 0,
 160         .num_resources  = ARRAY_SIZE(smc91x_resources),
 161         .resource       = smc91x_resources,
 162 };
 163
 164 static struct platform_device lpd270_audio_device = {
 165         .name           = "pxa2xx-ac97",
 166         .id             = -1,
 167 };
 168
 169 static struct resource lpd270_flash_resources[] = {
 170         [0] = {
 171                 .start  = PXA_CS0_PHYS,
 172                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
 173                 .flags  = IORESOURCE_MEM,
 174         },
 175         [1] = {
 176                 .start  = PXA_CS1_PHYS,
 177                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
 178                 .flags  = IORESOURCE_MEM,
 179         },
 180 };
 181
 182 static struct mtd_partition lpd270_flash0_partitions[] = {
 183         {
 184                 .name =         "Bootloader",
 185                 .size =         0x00040000,
 186                 .offset =       0,
 187                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 188         }, {
 189                 .name =         "Kernel",
 190                 .size =         0x00400000,
 191                 .offset =       0x00040000,
 192         }, {
 193                 .name =         "Filesystem",
 194                 .size =         MTDPART_SIZ_FULL,
 195                 .offset =       0x00440000
 196         },
 197 };
 198
 199 static struct flash_platform_data lpd270_flash_data[2] = {
 200         {
 201                 .name           = "processor-flash",
 202                 .map_name       = "cfi_probe",
 203                 .parts          = lpd270_flash0_partitions,
 204                 .nr_parts       = ARRAY_SIZE(lpd270_flash0_partitions),
 205         }, {
 206                 .name           = "mainboard-flash",
 207                 .map_name       = "cfi_probe",
 208                 .parts          = NULL,
 209                 .nr_parts       = 0,
 210         }
 211 };
 212
 213 static struct platform_device lpd270_flash_device[2] = {
 214         {
 215                 .name           = "pxa2xx-flash",
 216                 .id             = 0,
 217                 .dev = {
 218                         .platform_data  = &lpd270_flash_data[0],
 219                 },
 220                 .resource       = &lpd270_flash_resources[0],
 221                 .num_resources  = 1,
 222         }, {
 223                 .name           = "pxa2xx-flash",
 224                 .id             = 1,
 225                 .dev = {
 226                         .platform_data  = &lpd270_flash_data[1],
 227                 },
 228                 .resource       = &lpd270_flash_resources[1],
 229                 .num_resources  = 1,
 230         },
 231 };
 232
 233 static void lpd270_backlight_power(int on)
 234 {
 235         if (on) {
 236                 pxa_gpio_mode(GPIO16_PWM0_MD);
 237                 pxa_set_cken(CKEN_PWM0, 1);
 238                 PWM_CTRL0 = 0;
 239                 PWM_PWDUTY0 = 0x3ff;
 240                 PWM_PERVAL0 = 0x3ff;
 241         } else {
 242                 PWM_CTRL0 = 0;
 243                 PWM_PWDUTY0 = 0x0;
 244                 PWM_PERVAL0 = 0x3FF;
 245                 pxa_set_cken(CKEN_PWM0, 0);
 246         }
 247 }
 248
 249 /* 5.7" TFT QVGA (LoLo display number 1) */
 250 static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
 251         .pixclock               = 150000,
 252         .xres                   = 320,
 253         .yres                   = 240,
 254         .bpp                    = 16,
 255         .hsync_len              = 0x14,
 256         .left_margin            = 0x28,
 257         .right_margin           = 0x0a,
 258         .vsync_len              = 0x02,
 259         .upper_margin           = 0x08,
 260         .lower_margin           = 0x14,
 261         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 262 };
 263
 264 static struct pxafb_mach_info sharp_lq057q3dc02 = {
 265         .modes                  = &sharp_lq057q3dc02_mode,
 266         .num_modes              = 1,
 267         .lccr0                  = 0x07800080,
 268         .lccr3                  = 0x00400000,
 269         .pxafb_backlight_power  = lpd270_backlight_power,
 270 };
 271
 272 /* 12.1" TFT SVGA (LoLo display number 2) */
 273 static struct pxafb_mode_info sharp_lq121s1dg31_mode = {
 274         .pixclock               = 50000,
 275         .xres                   = 800,
 276         .yres                   = 600,
 277         .bpp                    = 16,
 278         .hsync_len              = 0x05,
 279         .left_margin            = 0x52,
 280         .right_margin           = 0x05,
 281         .vsync_len              = 0x04,
 282         .upper_margin           = 0x14,
 283         .lower_margin           = 0x0a,
 284         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 285 };
 286
 287 static struct pxafb_mach_info sharp_lq121s1dg31 = {
 288         .modes                  = &sharp_lq121s1dg31_mode,
 289         .num_modes              = 1,
 290         .lccr0                  = 0x07800080,
 291         .lccr3                  = 0x00400000,
 292         .pxafb_backlight_power  = lpd270_backlight_power,
 293 };
 294
 295 /* 3.6" TFT QVGA (LoLo display number 3) */
 296 static struct pxafb_mode_info sharp_lq036q1da01_mode = {
 297         .pixclock               = 150000,
 298         .xres                   = 320,
 299         .yres                   = 240,
 300         .bpp                    = 16,
 301         .hsync_len              = 0x0e,
 302         .left_margin            = 0x04,
 303         .right_margin           = 0x0a,
 304         .vsync_len              = 0x03,
 305         .upper_margin           = 0x03,
 306         .lower_margin           = 0x03,
 307         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 308 };
 309
 310 static struct pxafb_mach_info sharp_lq036q1da01 = {
 311         .modes                  = &sharp_lq036q1da01_mode,
 312         .num_modes              = 1,
 313         .lccr0                  = 0x07800080,
 314         .lccr3                  = 0x00400000,
 315         .pxafb_backlight_power  = lpd270_backlight_power,
 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         .pxafb_backlight_power  = lpd270_backlight_power,
 339 };
 340
 341 /* 10.4" TFT VGA (LoLo display number 7) */
 342 static struct pxafb_mode_info sharp_lq10d368_mode = {
 343         .pixclock               = 25000,
 344         .xres                   = 640,
 345         .yres                   = 480,
 346         .bpp                    = 16,
 347         .hsync_len              = 0x31,
 348         .left_margin            = 0x89,
 349         .right_margin           = 0x19,
 350         .vsync_len              = 0x12,
 351         .upper_margin           = 0x22,
 352         .lower_margin           = 0x00,
 353         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 354 };
 355
 356 static struct pxafb_mach_info sharp_lq10d368 = {
 357         .modes                  = &sharp_lq10d368_mode,
 358         .num_modes              = 1,
 359         .lccr0                  = 0x07800080,
 360         .lccr3                  = 0x00400000,
 361         .pxafb_backlight_power  = lpd270_backlight_power,
 362 };
 363
 364 /* 3.5" TFT QVGA (LoLo display number 8) */
 365 static struct pxafb_mode_info sharp_lq035q7db02_20_mode = {
 366         .pixclock               = 150000,
 367         .xres                   = 240,
 368         .yres                   = 320,
 369         .bpp                    = 16,
 370         .hsync_len              = 0x0e,
 371         .left_margin            = 0x0a,
 372         .right_margin           = 0x0a,
 373         .vsync_len              = 0x03,
 374         .upper_margin           = 0x05,
 375         .lower_margin           = 0x14,
 376         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 377 };
 378
 379 static struct pxafb_mach_info sharp_lq035q7db02_20 = {
 380         .modes                  = &sharp_lq035q7db02_20_mode,
 381         .num_modes              = 1,
 382         .lccr0                  = 0x07800080,
 383         .lccr3                  = 0x00400000,
 384         .pxafb_backlight_power  = lpd270_backlight_power,
 385 };
 386
 387 static struct pxafb_mach_info *lpd270_lcd_to_use;
 388
 389 static int __init lpd270_set_lcd(char *str)
 390 {
 391         if (!strnicmp(str, "lq057q3dc02", 11)) {
 392                 lpd270_lcd_to_use = &sharp_lq057q3dc02;
 393         } else if (!strnicmp(str, "lq121s1dg31", 11)) {
 394                 lpd270_lcd_to_use = &sharp_lq121s1dg31;
 395         } else if (!strnicmp(str, "lq036q1da01", 11)) {
 396                 lpd270_lcd_to_use = &sharp_lq036q1da01;
 397         } else if (!strnicmp(str, "lq64d343", 8)) {
 398                 lpd270_lcd_to_use = &sharp_lq64d343;
 399         } else if (!strnicmp(str, "lq10d368", 8)) {
 400                 lpd270_lcd_to_use = &sharp_lq10d368;
 401         } else if (!strnicmp(str, "lq035q7db02-20", 14)) {
 402                 lpd270_lcd_to_use = &sharp_lq035q7db02_20;
 403         } else {
 404                 printk(KERN_INFO "lpd270: unknown lcd panel [%s]\n", str);
 405         }
 406
 407         return 1;
 408 }
 409
 410 __setup("lcd=", lpd270_set_lcd);
 411
 412 static struct platform_device *platform_devices[] __initdata = {
 413         &smc91x_device,
 414         &lpd270_audio_device,
 415         &lpd270_flash_device[0],
 416         &lpd270_flash_device[1],
 417 };
 418
 419 static int lpd270_ohci_init(struct device *dev)
 420 {
 421         /* setup Port1 GPIO pin. */
 422         pxa_gpio_mode(88 | GPIO_ALT_FN_1_IN);   /* USBHPWR1 */
 423         pxa_gpio_mode(89 | GPIO_ALT_FN_2_OUT);  /* USBHPEN1 */
 424
 425         /* Set the Power Control Polarity Low and Power Sense
 426            Polarity Low to active low. */
 427         UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
 428                 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
 429
 430         return 0;
 431 }
 432
 433 static struct pxaohci_platform_data lpd270_ohci_platform_data = {
 434         .port_mode      = PMM_PERPORT_MODE,
 435         .init           = lpd270_ohci_init,
 436 };
 437
 438 static void __init lpd270_init(void)
 439 {
 440         lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
 441         lpd270_flash_data[1].width = 4;
 442
 443         /*
 444          * System bus arbiter setting:
 445          * - Core_Park
 446          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 447          */
 448         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 449
 450         /*
 451          * On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
 452          */
 453         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
 454
 455         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 456
 457         if (lpd270_lcd_to_use != NULL)
 458                 set_pxa_fb_info(lpd270_lcd_to_use);
 459
 460         pxa_set_ohci_info(&lpd270_ohci_platform_data);
 461 }
 462
 463
 464 static struct map_desc lpd270_io_desc[] __initdata = {
 465         {
 466                 .virtual        = LPD270_CPLD_VIRT,
 467                 .pfn            = __phys_to_pfn(LPD270_CPLD_PHYS),
 468                 .length         = LPD270_CPLD_SIZE,
 469                 .type           = MT_DEVICE,
 470         },
 471 };
 472
 473 static void __init lpd270_map_io(void)
 474 {
 475         pxa_map_io();
 476         iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
 477
 478         /* initialize sleep mode regs (wake-up sources, etc) */
 479         PGSR0 = 0x00008800;
 480         PGSR1 = 0x00000002;
 481         PGSR2 = 0x0001FC00;
 482         PGSR3 = 0x00001F81;
 483         PWER  = 0xC0000002;
 484         PRER  = 0x00000002;
 485         PFER  = 0x00000002;
 486
 487         /* for use I SRAM as framebuffer.  */
 488         PSLR |= 0x00000F04;
 489         PCFR  = 0x00000066;
 490 }
 491
 492 MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
 493         /* Maintainer: Peter Barada */
 494         .phys_io        = 0x40000000,
 495         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 496         .boot_params    = 0xa0000100,
 497         .map_io         = lpd270_map_io,
 498         .init_irq       = lpd270_init_irq,
 499         .timer          = &pxa_timer,
 500         .init_machine   = lpd270_init,
 501 MACHINE_END