kernel/2.6.29.6-aldebaran-rt/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 <mach/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 <mach/pxa-regs.h>
  42 #include <mach/pxa2xx-regs.h>
  43 #include <mach/mfp-pxa27x.h>
  44 #include <mach/lpd270.h>
  45 #include <mach/audio.h>
  46 #include <mach/pxafb.h>
  47 #include <mach/mmc.h>
  48 #include <mach/irda.h>
  49 #include <mach/ohci.h>
  50
  51 #include "generic.h"
  52 #include "devices.h"
  53
  54 static unsigned long lpd270_pin_config[] __initdata = {
  55         /* Chip Selects */
  56         GPIO15_nCS_1,   /* Mainboard Flash */
  57         GPIO78_nCS_2,   /* CPLD + Ethernet */
  58
  59         /* LCD - 16bpp Active TFT */
  60         GPIO58_LCD_LDD_0,
  61         GPIO59_LCD_LDD_1,
  62         GPIO60_LCD_LDD_2,
  63         GPIO61_LCD_LDD_3,
  64         GPIO62_LCD_LDD_4,
  65         GPIO63_LCD_LDD_5,
  66         GPIO64_LCD_LDD_6,
  67         GPIO65_LCD_LDD_7,
  68         GPIO66_LCD_LDD_8,
  69         GPIO67_LCD_LDD_9,
  70         GPIO68_LCD_LDD_10,
  71         GPIO69_LCD_LDD_11,
  72         GPIO70_LCD_LDD_12,
  73         GPIO71_LCD_LDD_13,
  74         GPIO72_LCD_LDD_14,
  75         GPIO73_LCD_LDD_15,
  76         GPIO74_LCD_FCLK,
  77         GPIO75_LCD_LCLK,
  78         GPIO76_LCD_PCLK,
  79         GPIO77_LCD_BIAS,
  80         GPIO16_PWM0_OUT,        /* Backlight */
  81
  82         /* USB Host */
  83         GPIO88_USBH1_PWR,
  84         GPIO89_USBH1_PEN,
  85
  86         /* AC97 */
  87         GPIO45_AC97_SYSCLK,
  88
  89         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
  90 };
  91
  92 static unsigned int lpd270_irq_enabled;
  93
  94 static void lpd270_mask_irq(unsigned int irq)
  95 {
  96         int lpd270_irq = irq - LPD270_IRQ(0);
  97
  98         __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
  99
 100         lpd270_irq_enabled &= ~(1 << lpd270_irq);
 101         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 102 }
 103
 104 static void lpd270_unmask_irq(unsigned int irq)
 105 {
 106         int lpd270_irq = irq - LPD270_IRQ(0);
 107
 108         lpd270_irq_enabled |= 1 << lpd270_irq;
 109         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 110 }
 111
 112 static struct irq_chip lpd270_irq_chip = {
 113         .name           = "CPLD",
 114         .ack            = lpd270_mask_irq,
 115         .mask           = lpd270_mask_irq,
 116         .unmask         = lpd270_unmask_irq,
 117 };
 118
 119 static void lpd270_irq_handler(unsigned int irq, struct irq_desc *desc)
 120 {
 121         unsigned long pending;
 122
 123         pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
 124         do {
 125                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
 126                 if (likely(pending)) {
 127                         irq = LPD270_IRQ(0) + __ffs(pending);
 128                         generic_handle_irq(irq);
 129
 130                         pending = __raw_readw(LPD270_INT_STATUS) &
 131                                                 lpd270_irq_enabled;
 132                 }
 133         } while (pending);
 134 }
 135
 136 static void __init lpd270_init_irq(void)
 137 {
 138         int irq;
 139
 140         pxa27x_init_irq();
 141
 142         __raw_writew(0, LPD270_INT_MASK);
 143         __raw_writew(0, LPD270_INT_STATUS);
 144
 145         /* setup extra LogicPD PXA270 irqs */
 146         for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
 147                 set_irq_chip(irq, &lpd270_irq_chip);
 148                 set_irq_handler(irq, handle_level_irq);
 149                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 150         }
 151         set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
 152         set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
 153 }
 154
 155
 156 #ifdef CONFIG_PM
 157 static int lpd270_irq_resume(struct sys_device *dev)
 158 {
 159         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 160         return 0;
 161 }
 162
 163 static struct sysdev_class lpd270_irq_sysclass = {
 164         .name = "cpld_irq",
 165         .resume = lpd270_irq_resume,
 166 };
 167
 168 static struct sys_device lpd270_irq_device = {
 169         .cls = &lpd270_irq_sysclass,
 170 };
 171
 172 static int __init lpd270_irq_device_init(void)
 173 {
 174         int ret = -ENODEV;
 175         if (machine_is_logicpd_pxa270()) {
 176                 ret = sysdev_class_register(&lpd270_irq_sysclass);
 177                 if (ret == 0)
 178                         ret = sysdev_register(&lpd270_irq_device);
 179         }
 180         return ret;
 181 }
 182
 183 device_initcall(lpd270_irq_device_init);
 184 #endif
 185
 186
 187 static struct resource smc91x_resources[] = {
 188         [0] = {
 189                 .start  = LPD270_ETH_PHYS,
 190                 .end    = (LPD270_ETH_PHYS + 0xfffff),
 191                 .flags  = IORESOURCE_MEM,
 192         },
 193         [1] = {
 194                 .start  = LPD270_ETHERNET_IRQ,
 195                 .end    = LPD270_ETHERNET_IRQ,
 196                 .flags  = IORESOURCE_IRQ,
 197         },
 198 };
 199
 200 static struct platform_device smc91x_device = {
 201         .name           = "smc91x",
 202         .id             = 0,
 203         .num_resources  = ARRAY_SIZE(smc91x_resources),
 204         .resource       = smc91x_resources,
 205 };
 206
 207 static struct resource lpd270_flash_resources[] = {
 208         [0] = {
 209                 .start  = PXA_CS0_PHYS,
 210                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
 211                 .flags  = IORESOURCE_MEM,
 212         },
 213         [1] = {
 214                 .start  = PXA_CS1_PHYS,
 215                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
 216                 .flags  = IORESOURCE_MEM,
 217         },
 218 };
 219
 220 static struct mtd_partition lpd270_flash0_partitions[] = {
 221         {
 222                 .name =         "Bootloader",
 223                 .size =         0x00040000,
 224                 .offset =       0,
 225                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 226         }, {
 227                 .name =         "Kernel",
 228                 .size =         0x00400000,
 229                 .offset =       0x00040000,
 230         }, {
 231                 .name =         "Filesystem",
 232                 .size =         MTDPART_SIZ_FULL,
 233                 .offset =       0x00440000
 234         },
 235 };
 236
 237 static struct flash_platform_data lpd270_flash_data[2] = {
 238         {
 239                 .name           = "processor-flash",
 240                 .map_name       = "cfi_probe",
 241                 .parts          = lpd270_flash0_partitions,
 242                 .nr_parts       = ARRAY_SIZE(lpd270_flash0_partitions),
 243         }, {
 244                 .name           = "mainboard-flash",
 245                 .map_name       = "cfi_probe",
 246                 .parts          = NULL,
 247                 .nr_parts       = 0,
 248         }
 249 };
 250
 251 static struct platform_device lpd270_flash_device[2] = {
 252         {
 253                 .name           = "pxa2xx-flash",
 254                 .id             = 0,
 255                 .dev = {
 256                         .platform_data  = &lpd270_flash_data[0],
 257                 },
 258                 .resource       = &lpd270_flash_resources[0],
 259                 .num_resources  = 1,
 260         }, {
 261                 .name           = "pxa2xx-flash",
 262                 .id             = 1,
 263                 .dev = {
 264                         .platform_data  = &lpd270_flash_data[1],
 265                 },
 266                 .resource       = &lpd270_flash_resources[1],
 267                 .num_resources  = 1,
 268         },
 269 };
 270
 271 static struct platform_pwm_backlight_data lpd270_backlight_data = {
 272         .pwm_id         = 0,
 273         .max_brightness = 1,
 274         .dft_brightness = 1,
 275         .pwm_period_ns  = 78770,
 276 };
 277
 278 static struct platform_device lpd270_backlight_device = {
 279         .name           = "pwm-backlight",
 280         .dev            = {
 281                 .parent = &pxa27x_device_pwm0.dev,
 282                 .platform_data = &lpd270_backlight_data,
 283         },
 284 };
 285
 286 /* 5.7" TFT QVGA (LoLo display number 1) */
 287 static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
 288         .pixclock               = 150000,
 289         .xres                   = 320,
 290         .yres                   = 240,
 291         .bpp                    = 16,
 292         .hsync_len              = 0x14,
 293         .left_margin            = 0x28,
 294         .right_margin           = 0x0a,
 295         .vsync_len              = 0x02,
 296         .upper_margin           = 0x08,
 297         .lower_margin           = 0x14,
 298         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 299 };
 300
 301 static struct pxafb_mach_info sharp_lq057q3dc02 = {
 302         .modes                  = &sharp_lq057q3dc02_mode,
 303         .num_modes              = 1,
 304         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 305                                   LCD_ALTERNATE_MAPPING,
 306 };
 307
 308 /* 12.1" TFT SVGA (LoLo display number 2) */
 309 static struct pxafb_mode_info sharp_lq121s1dg31_mode = {
 310         .pixclock               = 50000,
 311         .xres                   = 800,
 312         .yres                   = 600,
 313         .bpp                    = 16,
 314         .hsync_len              = 0x05,
 315         .left_margin            = 0x52,
 316         .right_margin           = 0x05,
 317         .vsync_len              = 0x04,
 318         .upper_margin           = 0x14,
 319         .lower_margin           = 0x0a,
 320         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 321 };
 322
 323 static struct pxafb_mach_info sharp_lq121s1dg31 = {
 324         .modes                  = &sharp_lq121s1dg31_mode,
 325         .num_modes              = 1,
 326         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 327                                   LCD_ALTERNATE_MAPPING,
 328 };
 329
 330 /* 3.6" TFT QVGA (LoLo display number 3) */
 331 static struct pxafb_mode_info sharp_lq036q1da01_mode = {
 332         .pixclock               = 150000,
 333         .xres                   = 320,
 334         .yres                   = 240,
 335         .bpp                    = 16,
 336         .hsync_len              = 0x0e,
 337         .left_margin            = 0x04,
 338         .right_margin           = 0x0a,
 339         .vsync_len              = 0x03,
 340         .upper_margin           = 0x03,
 341         .lower_margin           = 0x03,
 342         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 343 };
 344
 345 static struct pxafb_mach_info sharp_lq036q1da01 = {
 346         .modes                  = &sharp_lq036q1da01_mode,
 347         .num_modes              = 1,
 348         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 349                                   LCD_ALTERNATE_MAPPING,
 350 };
 351
 352 /* 6.4" TFT VGA (LoLo display number 5) */
 353 static struct pxafb_mode_info sharp_lq64d343_mode = {
 354         .pixclock               = 25000,
 355         .xres                   = 640,
 356         .yres                   = 480,
 357         .bpp                    = 16,
 358         .hsync_len              = 0x31,
 359         .left_margin            = 0x89,
 360         .right_margin           = 0x19,
 361         .vsync_len              = 0x12,
 362         .upper_margin           = 0x22,
 363         .lower_margin           = 0x00,
 364         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 365 };
 366
 367 static struct pxafb_mach_info sharp_lq64d343 = {
 368         .modes                  = &sharp_lq64d343_mode,
 369         .num_modes              = 1,
 370         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 371                                   LCD_ALTERNATE_MAPPING,
 372 };
 373
 374 /* 10.4" TFT VGA (LoLo display number 7) */
 375 static struct pxafb_mode_info sharp_lq10d368_mode = {
 376         .pixclock               = 25000,
 377         .xres                   = 640,
 378         .yres                   = 480,
 379         .bpp                    = 16,
 380         .hsync_len              = 0x31,
 381         .left_margin            = 0x89,
 382         .right_margin           = 0x19,
 383         .vsync_len              = 0x12,
 384         .upper_margin           = 0x22,
 385         .lower_margin           = 0x00,
 386         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 387 };
 388
 389 static struct pxafb_mach_info sharp_lq10d368 = {
 390         .modes                  = &sharp_lq10d368_mode,
 391         .num_modes              = 1,
 392         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 393                                   LCD_ALTERNATE_MAPPING,
 394 };
 395
 396 /* 3.5" TFT QVGA (LoLo display number 8) */
 397 static struct pxafb_mode_info sharp_lq035q7db02_20_mode = {
 398         .pixclock               = 150000,
 399         .xres                   = 240,
 400         .yres                   = 320,
 401         .bpp                    = 16,
 402         .hsync_len              = 0x0e,
 403         .left_margin            = 0x0a,
 404         .right_margin           = 0x0a,
 405         .vsync_len              = 0x03,
 406         .upper_margin           = 0x05,
 407         .lower_margin           = 0x14,
 408         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 409 };
 410
 411 static struct pxafb_mach_info sharp_lq035q7db02_20 = {
 412         .modes                  = &sharp_lq035q7db02_20_mode,
 413         .num_modes              = 1,
 414         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 415                                   LCD_ALTERNATE_MAPPING,
 416 };
 417
 418 static struct pxafb_mach_info *lpd270_lcd_to_use;
 419
 420 static int __init lpd270_set_lcd(char *str)
 421 {
 422         if (!strnicmp(str, "lq057q3dc02", 11)) {
 423                 lpd270_lcd_to_use = &sharp_lq057q3dc02;
 424         } else if (!strnicmp(str, "lq121s1dg31", 11)) {
 425                 lpd270_lcd_to_use = &sharp_lq121s1dg31;
 426         } else if (!strnicmp(str, "lq036q1da01", 11)) {
 427                 lpd270_lcd_to_use = &sharp_lq036q1da01;
 428         } else if (!strnicmp(str, "lq64d343", 8)) {
 429                 lpd270_lcd_to_use = &sharp_lq64d343;
 430         } else if (!strnicmp(str, "lq10d368", 8)) {
 431                 lpd270_lcd_to_use = &sharp_lq10d368;
 432         } else if (!strnicmp(str, "lq035q7db02-20", 14)) {
 433                 lpd270_lcd_to_use = &sharp_lq035q7db02_20;
 434         } else {
 435                 printk(KERN_INFO "lpd270: unknown lcd panel [%s]\n", str);
 436         }
 437
 438         return 1;
 439 }
 440
 441 __setup("lcd=", lpd270_set_lcd);
 442
 443 static struct platform_device *platform_devices[] __initdata = {
 444         &smc91x_device,
 445         &lpd270_backlight_device,
 446         &lpd270_flash_device[0],
 447         &lpd270_flash_device[1],
 448 };
 449
 450 static struct pxaohci_platform_data lpd270_ohci_platform_data = {
 451         .port_mode      = PMM_PERPORT_MODE,
 452         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 453 };
 454
 455 static void __init lpd270_init(void)
 456 {
 457         pxa2xx_mfp_config(ARRAY_AND_SIZE(lpd270_pin_config));
 458
 459         lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
 460         lpd270_flash_data[1].width = 4;
 461
 462         /*
 463          * System bus arbiter setting:
 464          * - Core_Park
 465          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 466          */
 467         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 468
 469         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 470
 471         pxa_set_ac97_info(NULL);
 472
 473         if (lpd270_lcd_to_use != NULL)
 474                 set_pxa_fb_info(lpd270_lcd_to_use);
 475
 476         pxa_set_ohci_info(&lpd270_ohci_platform_data);
 477 }
 478
 479
 480 static struct map_desc lpd270_io_desc[] __initdata = {
 481         {
 482                 .virtual        = LPD270_CPLD_VIRT,
 483                 .pfn            = __phys_to_pfn(LPD270_CPLD_PHYS),
 484                 .length         = LPD270_CPLD_SIZE,
 485                 .type           = MT_DEVICE,
 486         },
 487 };
 488
 489 static void __init lpd270_map_io(void)
 490 {
 491         pxa_map_io();
 492         iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
 493
 494         /* for use I SRAM as framebuffer.  */
 495         PSLR |= 0x00000F04;
 496         PCFR  = 0x00000066;
 497 }
 498
 499 MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
 500         /* Maintainer: Peter Barada */
 501         .phys_io        = 0x40000000,
 502         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 503         .boot_params    = 0xa0000100,
 504         .map_io         = lpd270_map_io,
 505         .init_irq       = lpd270_init_irq,
 506         .timer          = &pxa_timer,
 507         .init_machine   = lpd270_init,
 508 MACHINE_END