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 #include <linux/gpio.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/syscore_ops.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.h>
  27 #include <linux/pwm_backlight.h>
  28 #include <linux/smc91x.h>
  29
  30 #include <asm/types.h>
  31 #include <asm/setup.h>
  32 #include <asm/memory.h>
  33 #include <asm/mach-types.h>
  34 #include <mach/hardware.h>
  35 #include <asm/irq.h>
  36 #include <asm/sizes.h>
  37
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/irq.h>
  41 #include <asm/mach/flash.h>
  42
  43 #include "pxa27x.h"
  44 #include "lpd270.h"
  45 #include <mach/audio.h>
  46 #include <linux/platform_data/video-pxafb.h>
  47 #include <linux/platform_data/mmc-pxamci.h>
  48 #include <linux/platform_data/irda-pxaficp.h>
  49 #include <linux/platform_data/usb-ohci-pxa27x.h>
  50 #include <mach/smemc.h>
  51
  52 #include "generic.h"
  53 #include "devices.h"
  54
  55 static unsigned long lpd270_pin_config[] __initdata = {
  56         /* Chip Selects */
  57         GPIO15_nCS_1,   /* Mainboard Flash */
  58         GPIO78_nCS_2,   /* CPLD + Ethernet */
  59
  60         /* LCD - 16bpp Active TFT */
  61         GPIO58_LCD_LDD_0,
  62         GPIO59_LCD_LDD_1,
  63         GPIO60_LCD_LDD_2,
  64         GPIO61_LCD_LDD_3,
  65         GPIO62_LCD_LDD_4,
  66         GPIO63_LCD_LDD_5,
  67         GPIO64_LCD_LDD_6,
  68         GPIO65_LCD_LDD_7,
  69         GPIO66_LCD_LDD_8,
  70         GPIO67_LCD_LDD_9,
  71         GPIO68_LCD_LDD_10,
  72         GPIO69_LCD_LDD_11,
  73         GPIO70_LCD_LDD_12,
  74         GPIO71_LCD_LDD_13,
  75         GPIO72_LCD_LDD_14,
  76         GPIO73_LCD_LDD_15,
  77         GPIO74_LCD_FCLK,
  78         GPIO75_LCD_LCLK,
  79         GPIO76_LCD_PCLK,
  80         GPIO77_LCD_BIAS,
  81         GPIO16_PWM0_OUT,        /* Backlight */
  82
  83         /* USB Host */
  84         GPIO88_USBH1_PWR,
  85         GPIO89_USBH1_PEN,
  86
  87         /* AC97 */
  88         GPIO28_AC97_BITCLK,
  89         GPIO29_AC97_SDATA_IN_0,
  90         GPIO30_AC97_SDATA_OUT,
  91         GPIO31_AC97_SYNC,
  92         GPIO45_AC97_SYSCLK,
  93
  94         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
  95 };
  96
  97 static unsigned int lpd270_irq_enabled;
  98
  99 static void lpd270_mask_irq(struct irq_data *d)
 100 {
 101         int lpd270_irq = d->irq - LPD270_IRQ(0);
 102
 103         __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
 104
 105         lpd270_irq_enabled &= ~(1 << lpd270_irq);
 106         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 107 }
 108
 109 static void lpd270_unmask_irq(struct irq_data *d)
 110 {
 111         int lpd270_irq = d->irq - LPD270_IRQ(0);
 112
 113         lpd270_irq_enabled |= 1 << lpd270_irq;
 114         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 115 }
 116
 117 static struct irq_chip lpd270_irq_chip = {
 118         .name           = "CPLD",
 119         .irq_ack        = lpd270_mask_irq,
 120         .irq_mask       = lpd270_mask_irq,
 121         .irq_unmask     = lpd270_unmask_irq,
 122 };
 123
 124 static void lpd270_irq_handler(struct irq_desc *desc)
 125 {
 126         unsigned int irq;
 127         unsigned long pending;
 128
 129         pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
 130         do {
 131                 /* clear useless edge notification */
 132                 desc->irq_data.chip->irq_ack(&desc->irq_data);
 133                 if (likely(pending)) {
 134                         irq = LPD270_IRQ(0) + __ffs(pending);
 135                         generic_handle_irq(irq);
 136
 137                         pending = __raw_readw(LPD270_INT_STATUS) &
 138                                                 lpd270_irq_enabled;
 139                 }
 140         } while (pending);
 141 }
 142
 143 static void __init lpd270_init_irq(void)
 144 {
 145         int irq;
 146
 147         pxa27x_init_irq();
 148
 149         __raw_writew(0, LPD270_INT_MASK);
 150         __raw_writew(0, LPD270_INT_STATUS);
 151
 152         /* setup extra LogicPD PXA270 irqs */
 153         for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
 154                 irq_set_chip_and_handler(irq, &lpd270_irq_chip,
 155                                          handle_level_irq);
 156                 irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
 157         }
 158         irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), lpd270_irq_handler);
 159         irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);
 160 }
 161
 162
 163 #ifdef CONFIG_PM
 164 static void lpd270_irq_resume(void)
 165 {
 166         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
 167 }
 168
 169 static struct syscore_ops lpd270_irq_syscore_ops = {
 170         .resume = lpd270_irq_resume,
 171 };
 172
 173 static int __init lpd270_irq_device_init(void)
 174 {
 175         if (machine_is_logicpd_pxa270()) {
 176                 register_syscore_ops(&lpd270_irq_syscore_ops);
 177                 return 0;
 178         }
 179         return -ENODEV;
 180 }
 181
 182 device_initcall(lpd270_irq_device_init);
 183 #endif
 184
 185
 186 static struct resource smc91x_resources[] = {
 187         [0] = {
 188                 .start  = LPD270_ETH_PHYS,
 189                 .end    = (LPD270_ETH_PHYS + 0xfffff),
 190                 .flags  = IORESOURCE_MEM,
 191         },
 192         [1] = {
 193                 .start  = LPD270_ETHERNET_IRQ,
 194                 .end    = LPD270_ETHERNET_IRQ,
 195                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 196         },
 197 };
 198
 199 struct smc91x_platdata smc91x_platdata = {
 200         .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
 201 };
 202
 203 static struct platform_device smc91x_device = {
 204         .name           = "smc91x",
 205         .id             = 0,
 206         .num_resources  = ARRAY_SIZE(smc91x_resources),
 207         .resource       = smc91x_resources,
 208         .dev.platform_data = &smc91x_platdata,
 209 };
 210
 211 static struct resource lpd270_flash_resources[] = {
 212         [0] = {
 213                 .start  = PXA_CS0_PHYS,
 214                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
 215                 .flags  = IORESOURCE_MEM,
 216         },
 217         [1] = {
 218                 .start  = PXA_CS1_PHYS,
 219                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
 220                 .flags  = IORESOURCE_MEM,
 221         },
 222 };
 223
 224 static struct mtd_partition lpd270_flash0_partitions[] = {
 225         {
 226                 .name =         "Bootloader",
 227                 .size =         0x00040000,
 228                 .offset =       0,
 229                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 230         }, {
 231                 .name =         "Kernel",
 232                 .size =         0x00400000,
 233                 .offset =       0x00040000,
 234         }, {
 235                 .name =         "Filesystem",
 236                 .size =         MTDPART_SIZ_FULL,
 237                 .offset =       0x00440000
 238         },
 239 };
 240
 241 static struct flash_platform_data lpd270_flash_data[2] = {
 242         {
 243                 .name           = "processor-flash",
 244                 .map_name       = "cfi_probe",
 245                 .parts          = lpd270_flash0_partitions,
 246                 .nr_parts       = ARRAY_SIZE(lpd270_flash0_partitions),
 247         }, {
 248                 .name           = "mainboard-flash",
 249                 .map_name       = "cfi_probe",
 250                 .parts          = NULL,
 251                 .nr_parts       = 0,
 252         }
 253 };
 254
 255 static struct platform_device lpd270_flash_device[2] = {
 256         {
 257                 .name           = "pxa2xx-flash",
 258                 .id             = 0,
 259                 .dev = {
 260                         .platform_data  = &lpd270_flash_data[0],
 261                 },
 262                 .resource       = &lpd270_flash_resources[0],
 263                 .num_resources  = 1,
 264         }, {
 265                 .name           = "pxa2xx-flash",
 266                 .id             = 1,
 267                 .dev = {
 268                         .platform_data  = &lpd270_flash_data[1],
 269                 },
 270                 .resource       = &lpd270_flash_resources[1],
 271                 .num_resources  = 1,
 272         },
 273 };
 274
 275 static struct pwm_lookup lpd270_pwm_lookup[] = {
 276         PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78770,
 277                    PWM_POLARITY_NORMAL),
 278 };
 279
 280 static struct platform_pwm_backlight_data lpd270_backlight_data = {
 281         .max_brightness = 1,
 282         .dft_brightness = 1,
 283         .enable_gpio    = -1,
 284 };
 285
 286 static struct platform_device lpd270_backlight_device = {
 287         .name           = "pwm-backlight",
 288         .dev            = {
 289                 .parent = &pxa27x_device_pwm0.dev,
 290                 .platform_data = &lpd270_backlight_data,
 291         },
 292 };
 293
 294 /* 5.7" TFT QVGA (LoLo display number 1) */
 295 static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
 296         .pixclock               = 150000,
 297         .xres                   = 320,
 298         .yres                   = 240,
 299         .bpp                    = 16,
 300         .hsync_len              = 0x14,
 301         .left_margin            = 0x28,
 302         .right_margin           = 0x0a,
 303         .vsync_len              = 0x02,
 304         .upper_margin           = 0x08,
 305         .lower_margin           = 0x14,
 306         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 307 };
 308
 309 static struct pxafb_mach_info sharp_lq057q3dc02 = {
 310         .modes                  = &sharp_lq057q3dc02_mode,
 311         .num_modes              = 1,
 312         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 313                                   LCD_ALTERNATE_MAPPING,
 314 };
 315
 316 /* 12.1" TFT SVGA (LoLo display number 2) */
 317 static struct pxafb_mode_info sharp_lq121s1dg31_mode = {
 318         .pixclock               = 50000,
 319         .xres                   = 800,
 320         .yres                   = 600,
 321         .bpp                    = 16,
 322         .hsync_len              = 0x05,
 323         .left_margin            = 0x52,
 324         .right_margin           = 0x05,
 325         .vsync_len              = 0x04,
 326         .upper_margin           = 0x14,
 327         .lower_margin           = 0x0a,
 328         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 329 };
 330
 331 static struct pxafb_mach_info sharp_lq121s1dg31 = {
 332         .modes                  = &sharp_lq121s1dg31_mode,
 333         .num_modes              = 1,
 334         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 335                                   LCD_ALTERNATE_MAPPING,
 336 };
 337
 338 /* 3.6" TFT QVGA (LoLo display number 3) */
 339 static struct pxafb_mode_info sharp_lq036q1da01_mode = {
 340         .pixclock               = 150000,
 341         .xres                   = 320,
 342         .yres                   = 240,
 343         .bpp                    = 16,
 344         .hsync_len              = 0x0e,
 345         .left_margin            = 0x04,
 346         .right_margin           = 0x0a,
 347         .vsync_len              = 0x03,
 348         .upper_margin           = 0x03,
 349         .lower_margin           = 0x03,
 350         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 351 };
 352
 353 static struct pxafb_mach_info sharp_lq036q1da01 = {
 354         .modes                  = &sharp_lq036q1da01_mode,
 355         .num_modes              = 1,
 356         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 357                                   LCD_ALTERNATE_MAPPING,
 358 };
 359
 360 /* 6.4" TFT VGA (LoLo display number 5) */
 361 static struct pxafb_mode_info sharp_lq64d343_mode = {
 362         .pixclock               = 25000,
 363         .xres                   = 640,
 364         .yres                   = 480,
 365         .bpp                    = 16,
 366         .hsync_len              = 0x31,
 367         .left_margin            = 0x89,
 368         .right_margin           = 0x19,
 369         .vsync_len              = 0x12,
 370         .upper_margin           = 0x22,
 371         .lower_margin           = 0x00,
 372         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 373 };
 374
 375 static struct pxafb_mach_info sharp_lq64d343 = {
 376         .modes                  = &sharp_lq64d343_mode,
 377         .num_modes              = 1,
 378         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 379                                   LCD_ALTERNATE_MAPPING,
 380 };
 381
 382 /* 10.4" TFT VGA (LoLo display number 7) */
 383 static struct pxafb_mode_info sharp_lq10d368_mode = {
 384         .pixclock               = 25000,
 385         .xres                   = 640,
 386         .yres                   = 480,
 387         .bpp                    = 16,
 388         .hsync_len              = 0x31,
 389         .left_margin            = 0x89,
 390         .right_margin           = 0x19,
 391         .vsync_len              = 0x12,
 392         .upper_margin           = 0x22,
 393         .lower_margin           = 0x00,
 394         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 395 };
 396
 397 static struct pxafb_mach_info sharp_lq10d368 = {
 398         .modes                  = &sharp_lq10d368_mode,
 399         .num_modes              = 1,
 400         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 401                                   LCD_ALTERNATE_MAPPING,
 402 };
 403
 404 /* 3.5" TFT QVGA (LoLo display number 8) */
 405 static struct pxafb_mode_info sharp_lq035q7db02_20_mode = {
 406         .pixclock               = 150000,
 407         .xres                   = 240,
 408         .yres                   = 320,
 409         .bpp                    = 16,
 410         .hsync_len              = 0x0e,
 411         .left_margin            = 0x0a,
 412         .right_margin           = 0x0a,
 413         .vsync_len              = 0x03,
 414         .upper_margin           = 0x05,
 415         .lower_margin           = 0x14,
 416         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 417 };
 418
 419 static struct pxafb_mach_info sharp_lq035q7db02_20 = {
 420         .modes                  = &sharp_lq035q7db02_20_mode,
 421         .num_modes              = 1,
 422         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
 423                                   LCD_ALTERNATE_MAPPING,
 424 };
 425
 426 static struct pxafb_mach_info *lpd270_lcd_to_use;
 427
 428 static int __init lpd270_set_lcd(char *str)
 429 {
 430         if (!strncasecmp(str, "lq057q3dc02", 11)) {
 431                 lpd270_lcd_to_use = &sharp_lq057q3dc02;
 432         } else if (!strncasecmp(str, "lq121s1dg31", 11)) {
 433                 lpd270_lcd_to_use = &sharp_lq121s1dg31;
 434         } else if (!strncasecmp(str, "lq036q1da01", 11)) {
 435                 lpd270_lcd_to_use = &sharp_lq036q1da01;
 436         } else if (!strncasecmp(str, "lq64d343", 8)) {
 437                 lpd270_lcd_to_use = &sharp_lq64d343;
 438         } else if (!strncasecmp(str, "lq10d368", 8)) {
 439                 lpd270_lcd_to_use = &sharp_lq10d368;
 440         } else if (!strncasecmp(str, "lq035q7db02-20", 14)) {
 441                 lpd270_lcd_to_use = &sharp_lq035q7db02_20;
 442         } else {
 443                 printk(KERN_INFO "lpd270: unknown lcd panel [%s]\n", str);
 444         }
 445
 446         return 1;
 447 }
 448
 449 __setup("lcd=", lpd270_set_lcd);
 450
 451 static struct platform_device *platform_devices[] __initdata = {
 452         &smc91x_device,
 453         &lpd270_backlight_device,
 454         &lpd270_flash_device[0],
 455         &lpd270_flash_device[1],
 456 };
 457
 458 static struct pxaohci_platform_data lpd270_ohci_platform_data = {
 459         .port_mode      = PMM_PERPORT_MODE,
 460         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 461 };
 462
 463 static void __init lpd270_init(void)
 464 {
 465         pxa2xx_mfp_config(ARRAY_AND_SIZE(lpd270_pin_config));
 466
 467         pxa_set_ffuart_info(NULL);
 468         pxa_set_btuart_info(NULL);
 469         pxa_set_stuart_info(NULL);
 470
 471         lpd270_flash_data[0].width = (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
 472         lpd270_flash_data[1].width = 4;
 473
 474         /*
 475          * System bus arbiter setting:
 476          * - Core_Park
 477          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 478          */
 479         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 480
 481         pwm_add_table(lpd270_pwm_lookup, ARRAY_SIZE(lpd270_pwm_lookup));
 482         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 483
 484         pxa_set_ac97_info(NULL);
 485
 486         if (lpd270_lcd_to_use != NULL)
 487                 pxa_set_fb_info(NULL, lpd270_lcd_to_use);
 488
 489         pxa_set_ohci_info(&lpd270_ohci_platform_data);
 490 }
 491
 492
 493 static struct map_desc lpd270_io_desc[] __initdata = {
 494         {
 495                 .virtual        = (unsigned long)LPD270_CPLD_VIRT,
 496                 .pfn            = __phys_to_pfn(LPD270_CPLD_PHYS),
 497                 .length         = LPD270_CPLD_SIZE,
 498                 .type           = MT_DEVICE,
 499         },
 500 };
 501
 502 static void __init lpd270_map_io(void)
 503 {
 504         pxa27x_map_io();
 505         iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
 506
 507         /* for use I SRAM as framebuffer.  */
 508         PSLR |= 0x00000F04;
 509         PCFR  = 0x00000066;
 510 }
 511
 512 MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
 513         /* Maintainer: Peter Barada */
 514         .atag_offset    = 0x100,
 515         .map_io         = lpd270_map_io,
 516         .nr_irqs        = LPD270_NR_IRQS,
 517         .init_irq       = lpd270_init_irq,
 518         .handle_irq     = pxa27x_handle_irq,
 519         .init_time      = pxa_timer_init,
 520         .init_machine   = lpd270_init,
 521         .restart        = pxa_restart,
 522 MACHINE_END