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   1 /*
   2  * linux/arch/arm/mach-pxa/cm-x270.c
   3  *
   4  * Copyright (C) 2007 CompuLab, Ltd.
   5  * Mike Rapoport <mike@compulab.co.il>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/types.h>
  13 #include <linux/pm.h>
  14 #include <linux/fb.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/irq.h>
  17 #include <linux/sysdev.h>
  18 #include <linux/io.h>
  19 #include <linux/delay.h>
  20
  21 #include <linux/dm9000.h>
  22 #include <linux/rtc-v3020.h>
  23 #include <linux/serial_8250.h>
  24
  25 #include <video/mbxfb.h>
  26
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/map.h>
  30
  31 #include <asm/arch/pxa-regs.h>
  32 #include <asm/arch/pxa2xx-regs.h>
  33 #include <asm/arch/pxa2xx-gpio.h>
  34 #include <asm/arch/pxafb.h>
  35 #include <asm/arch/ohci.h>
  36 #include <asm/arch/mmc.h>
  37 #include <asm/arch/bitfield.h>
  38 #include <asm/arch/cm-x270.h>
  39
  40 #include <asm/hardware/it8152.h>
  41
  42 #include "generic.h"
  43 #include "cm-x270-pci.h"
  44
  45 #define RTC_PHYS_BASE           (PXA_CS1_PHYS + (5 << 22))
  46 #define DM9000_PHYS_BASE        (PXA_CS1_PHYS + (6 << 22))
  47
  48 static struct resource cmx270_dm9k_resource[] = {
  49         [0] = {
  50                 .start = DM9000_PHYS_BASE,
  51                 .end   = DM9000_PHYS_BASE + 4,
  52                 .flags = IORESOURCE_MEM,
  53         },
  54         [1] = {
  55                 .start = DM9000_PHYS_BASE + 8,
  56                 .end   = DM9000_PHYS_BASE + 8 + 500,
  57                 .flags = IORESOURCE_MEM,
  58         },
  59         [2] = {
  60                 .start = CMX270_ETHIRQ,
  61                 .end   = CMX270_ETHIRQ,
  62                 .flags = IORESOURCE_IRQ,
  63         }
  64 };
  65
  66 /* for the moment we limit ourselves to 32bit IO until some
  67  * better IO routines can be written and tested
  68  */
  69 static struct dm9000_plat_data cmx270_dm9k_platdata = {
  70         .flags          = DM9000_PLATF_32BITONLY,
  71 };
  72
  73 /* Ethernet device */
  74 static struct platform_device cmx270_device_dm9k = {
  75         .name           = "dm9000",
  76         .id             = 0,
  77         .num_resources  = ARRAY_SIZE(cmx270_dm9k_resource),
  78         .resource       = cmx270_dm9k_resource,
  79         .dev            = {
  80                 .platform_data = &cmx270_dm9k_platdata,
  81         }
  82 };
  83
  84 /* audio device */
  85 static struct platform_device cmx270_audio_device = {
  86         .name           = "pxa2xx-ac97",
  87         .id             = -1,
  88 };
  89
  90 /* touchscreen controller */
  91 static struct platform_device cmx270_ts_device = {
  92         .name           = "ucb1400_ts",
  93         .id             = -1,
  94 };
  95
  96 /* RTC */
  97 static struct resource cmx270_v3020_resource[] = {
  98         [0] = {
  99                 .start = RTC_PHYS_BASE,
 100                 .end   = RTC_PHYS_BASE + 4,
 101                 .flags = IORESOURCE_MEM,
 102         },
 103 };
 104
 105 struct v3020_platform_data cmx270_v3020_pdata = {
 106         .leftshift = 16,
 107 };
 108
 109 static struct platform_device cmx270_rtc_device = {
 110         .name           = "v3020",
 111         .num_resources  = ARRAY_SIZE(cmx270_v3020_resource),
 112         .resource       = cmx270_v3020_resource,
 113         .id             = -1,
 114         .dev            = {
 115                 .platform_data = &cmx270_v3020_pdata,
 116         }
 117 };
 118
 119 /*
 120  * CM-X270 LEDs
 121  */
 122 static struct platform_device cmx270_led_device = {
 123         .name           = "cm-x270-led",
 124         .id             = -1,
 125 };
 126
 127 /* 2700G graphics */
 128 static u64 fb_dma_mask = ~(u64)0;
 129
 130 static struct resource cmx270_2700G_resource[] = {
 131         /* frame buffer memory including ODFB and External SDRAM */
 132         [0] = {
 133                 .start = MARATHON_PHYS,
 134                 .end   = MARATHON_PHYS + 0x02000000,
 135                 .flags = IORESOURCE_MEM,
 136         },
 137         /* Marathon registers */
 138         [1] = {
 139                 .start = MARATHON_PHYS + 0x03fe0000,
 140                 .end   = MARATHON_PHYS + 0x03ffffff,
 141                 .flags = IORESOURCE_MEM,
 142         },
 143 };
 144
 145 static unsigned long save_lcd_regs[10];
 146
 147 static int cmx270_marathon_probe(struct fb_info *fb)
 148 {
 149         /* save PXA-270 pin settings before enabling 2700G */
 150         save_lcd_regs[0] = GPDR1;
 151         save_lcd_regs[1] = GPDR2;
 152         save_lcd_regs[2] = GAFR1_U;
 153         save_lcd_regs[3] = GAFR2_L;
 154         save_lcd_regs[4] = GAFR2_U;
 155
 156         /* Disable PXA-270 on-chip controller driving pins */
 157         GPDR1 &= ~(0xfc000000);
 158         GPDR2 &= ~(0x00c03fff);
 159         GAFR1_U &= ~(0xfff00000);
 160         GAFR2_L &= ~(0x0fffffff);
 161         GAFR2_U &= ~(0x0000f000);
 162         return 0;
 163 }
 164
 165 static int cmx270_marathon_remove(struct fb_info *fb)
 166 {
 167         GPDR1 =   save_lcd_regs[0];
 168         GPDR2 =   save_lcd_regs[1];
 169         GAFR1_U = save_lcd_regs[2];
 170         GAFR2_L = save_lcd_regs[3];
 171         GAFR2_U = save_lcd_regs[4];
 172         return 0;
 173 }
 174
 175 static struct mbxfb_platform_data cmx270_2700G_data = {
 176         .xres = {
 177                 .min = 240,
 178                 .max = 1200,
 179                 .defval = 640,
 180         },
 181         .yres = {
 182                 .min = 240,
 183                 .max = 1200,
 184                 .defval = 480,
 185         },
 186         .bpp = {
 187                 .min = 16,
 188                 .max = 32,
 189                 .defval = 16,
 190         },
 191         .memsize = 8*1024*1024,
 192         .probe = cmx270_marathon_probe,
 193         .remove = cmx270_marathon_remove,
 194 };
 195
 196 static struct platform_device cmx270_2700G = {
 197         .name           = "mbx-fb",
 198         .dev            = {
 199                 .platform_data  = &cmx270_2700G_data,
 200                 .dma_mask       = &fb_dma_mask,
 201                 .coherent_dma_mask = 0xffffffff,
 202         },
 203         .num_resources  = ARRAY_SIZE(cmx270_2700G_resource),
 204         .resource       = cmx270_2700G_resource,
 205         .id             = -1,
 206 };
 207
 208 static u64 ata_dma_mask = ~(u64)0;
 209
 210 static struct platform_device cmx270_ata = {
 211         .name = "pata_cm_x270",
 212         .id = -1,
 213         .dev            = {
 214                 .dma_mask       = &ata_dma_mask,
 215                 .coherent_dma_mask = 0xffffffff,
 216         },
 217 };
 218
 219 /* platform devices */
 220 static struct platform_device *platform_devices[] __initdata = {
 221         &cmx270_device_dm9k,
 222         &cmx270_audio_device,
 223         &cmx270_rtc_device,
 224         &cmx270_2700G,
 225         &cmx270_led_device,
 226         &cmx270_ts_device,
 227         &cmx270_ata,
 228 };
 229
 230 /* Map PCI companion and IDE/General Purpose CS statically */
 231 static struct map_desc cmx270_io_desc[] __initdata = {
 232         [0] = { /* IDE/general purpose space */
 233                 .virtual        = CMX270_IDE104_VIRT,
 234                 .pfn            = __phys_to_pfn(CMX270_IDE104_PHYS),
 235                 .length         = SZ_64M - SZ_8M,
 236                 .type           = MT_DEVICE
 237         },
 238         [1] = { /* PCI bridge */
 239                 .virtual        = CMX270_IT8152_VIRT,
 240                 .pfn            = __phys_to_pfn(CMX270_IT8152_PHYS),
 241                 .length         = SZ_64M,
 242                 .type           = MT_DEVICE
 243         },
 244 };
 245
 246 /*
 247   Display definitions
 248   keep these for backwards compatibility, although symbolic names (as
 249   e.g. in lpd270.c) looks better
 250 */
 251 #define MTYPE_STN320x240        0
 252 #define MTYPE_TFT640x480        1
 253 #define MTYPE_CRT640x480        2
 254 #define MTYPE_CRT800x600        3
 255 #define MTYPE_TFT320x240        6
 256 #define MTYPE_STN640x480        7
 257
 258 static struct pxafb_mode_info generic_stn_320x240_mode = {
 259         .pixclock       = 76923,
 260         .bpp            = 8,
 261         .xres           = 320,
 262         .yres           = 240,
 263         .hsync_len      = 3,
 264         .vsync_len      = 2,
 265         .left_margin    = 3,
 266         .upper_margin   = 0,
 267         .right_margin   = 3,
 268         .lower_margin   = 0,
 269         .sync           = (FB_SYNC_HOR_HIGH_ACT |
 270                            FB_SYNC_VERT_HIGH_ACT),
 271         .cmap_greyscale = 0,
 272 };
 273
 274 static struct pxafb_mach_info generic_stn_320x240 = {
 275         .modes          = &generic_stn_320x240_mode,
 276         .num_modes      = 1,
 277         .lccr0          = 0,
 278         .lccr3          = (LCCR3_PixClkDiv(0x03) |
 279                            LCCR3_Acb(0xff) |
 280                            LCCR3_PCP),
 281         .cmap_inverse   = 0,
 282         .cmap_static    = 0,
 283 };
 284
 285 static struct pxafb_mode_info generic_tft_640x480_mode = {
 286         .pixclock       = 38461,
 287         .bpp            = 8,
 288         .xres           = 640,
 289         .yres           = 480,
 290         .hsync_len      = 60,
 291         .vsync_len      = 2,
 292         .left_margin    = 70,
 293         .upper_margin   = 10,
 294         .right_margin   = 70,
 295         .lower_margin   = 5,
 296         .sync           = 0,
 297         .cmap_greyscale = 0,
 298 };
 299
 300 static struct pxafb_mach_info generic_tft_640x480 = {
 301         .modes          = &generic_tft_640x480_mode,
 302         .num_modes      = 1,
 303         .lccr0          = (LCCR0_PAS),
 304         .lccr3          = (LCCR3_PixClkDiv(0x01) |
 305                            LCCR3_Acb(0xff) |
 306                            LCCR3_PCP),
 307         .cmap_inverse   = 0,
 308         .cmap_static    = 0,
 309 };
 310
 311 static struct pxafb_mode_info generic_crt_640x480_mode = {
 312         .pixclock       = 38461,
 313         .bpp            = 8,
 314         .xres           = 640,
 315         .yres           = 480,
 316         .hsync_len      = 63,
 317         .vsync_len      = 2,
 318         .left_margin    = 81,
 319         .upper_margin   = 33,
 320         .right_margin   = 16,
 321         .lower_margin   = 10,
 322         .sync           = (FB_SYNC_HOR_HIGH_ACT |
 323                            FB_SYNC_VERT_HIGH_ACT),
 324         .cmap_greyscale = 0,
 325 };
 326
 327 static struct pxafb_mach_info generic_crt_640x480 = {
 328         .modes          = &generic_crt_640x480_mode,
 329         .num_modes      = 1,
 330         .lccr0          = (LCCR0_PAS),
 331         .lccr3          = (LCCR3_PixClkDiv(0x01) |
 332                            LCCR3_Acb(0xff)),
 333         .cmap_inverse   = 0,
 334         .cmap_static    = 0,
 335 };
 336
 337 static struct pxafb_mode_info generic_crt_800x600_mode = {
 338         .pixclock       = 28846,
 339         .bpp            = 8,
 340         .xres           = 800,
 341         .yres           = 600,
 342         .hsync_len      = 63,
 343         .vsync_len      = 2,
 344         .left_margin    = 26,
 345         .upper_margin   = 21,
 346         .right_margin   = 26,
 347         .lower_margin   = 11,
 348         .sync           = (FB_SYNC_HOR_HIGH_ACT |
 349                            FB_SYNC_VERT_HIGH_ACT),
 350         .cmap_greyscale = 0,
 351 };
 352
 353 static struct pxafb_mach_info generic_crt_800x600 = {
 354         .modes          = &generic_crt_800x600_mode,
 355         .num_modes      = 1,
 356         .lccr0          = (LCCR0_PAS),
 357         .lccr3          = (LCCR3_PixClkDiv(0x02) |
 358                            LCCR3_Acb(0xff)),
 359         .cmap_inverse   = 0,
 360         .cmap_static    = 0,
 361 };
 362
 363 static struct pxafb_mode_info generic_tft_320x240_mode = {
 364         .pixclock       = 134615,
 365         .bpp            = 16,
 366         .xres           = 320,
 367         .yres           = 240,
 368         .hsync_len      = 63,
 369         .vsync_len      = 7,
 370         .left_margin    = 75,
 371         .upper_margin   = 0,
 372         .right_margin   = 15,
 373         .lower_margin   = 15,
 374         .sync           = 0,
 375         .cmap_greyscale = 0,
 376 };
 377
 378 static struct pxafb_mach_info generic_tft_320x240 = {
 379         .modes          = &generic_tft_320x240_mode,
 380         .num_modes      = 1,
 381         .lccr0          = (LCCR0_PAS),
 382         .lccr3          = (LCCR3_PixClkDiv(0x06) |
 383                            LCCR3_Acb(0xff) |
 384                            LCCR3_PCP),
 385         .cmap_inverse   = 0,
 386         .cmap_static    = 0,
 387 };
 388
 389 static struct pxafb_mode_info generic_stn_640x480_mode = {
 390         .pixclock       = 57692,
 391         .bpp            = 8,
 392         .xres           = 640,
 393         .yres           = 480,
 394         .hsync_len      = 4,
 395         .vsync_len      = 2,
 396         .left_margin    = 10,
 397         .upper_margin   = 5,
 398         .right_margin   = 10,
 399         .lower_margin   = 5,
 400         .sync           = (FB_SYNC_HOR_HIGH_ACT |
 401                            FB_SYNC_VERT_HIGH_ACT),
 402         .cmap_greyscale = 0,
 403 };
 404
 405 static struct pxafb_mach_info generic_stn_640x480 = {
 406         .modes          = &generic_stn_640x480_mode,
 407         .num_modes      = 1,
 408         .lccr0          = 0,
 409         .lccr3          = (LCCR3_PixClkDiv(0x02) |
 410                            LCCR3_Acb(0xff)),
 411         .cmap_inverse   = 0,
 412         .cmap_static    = 0,
 413 };
 414
 415 static struct pxafb_mach_info *cmx270_display = &generic_crt_640x480;
 416
 417 static int __init cmx270_set_display(char *str)
 418 {
 419         int disp_type = simple_strtol(str, NULL, 0);
 420         switch (disp_type) {
 421         case MTYPE_STN320x240:
 422                 cmx270_display = &generic_stn_320x240;
 423                 break;
 424         case MTYPE_TFT640x480:
 425                 cmx270_display = &generic_tft_640x480;
 426                 break;
 427         case MTYPE_CRT640x480:
 428                 cmx270_display = &generic_crt_640x480;
 429                 break;
 430         case MTYPE_CRT800x600:
 431                 cmx270_display = &generic_crt_800x600;
 432                 break;
 433         case MTYPE_TFT320x240:
 434                 cmx270_display = &generic_tft_320x240;
 435                 break;
 436         case MTYPE_STN640x480:
 437                 cmx270_display = &generic_stn_640x480;
 438                 break;
 439         default: /* fallback to CRT 640x480 */
 440                 cmx270_display = &generic_crt_640x480;
 441                 break;
 442         }
 443         return 1;
 444 }
 445
 446 /*
 447    This should be done really early to get proper configuration for
 448    frame buffer.
 449    Indeed, pxafb parameters can be used istead, but CM-X270 bootloader
 450    has limitied line length for kernel command line, and also it will
 451    break compatibitlty with proprietary releases already in field.
 452 */
 453 __setup("monitor=", cmx270_set_display);
 454
 455 /* PXA27x OHCI controller setup */
 456 static int cmx270_ohci_init(struct device *dev)
 457 {
 458         /* Set the Power Control Polarity Low */
 459         UHCHR = (UHCHR | UHCHR_PCPL) &
 460                 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);
 461
 462         return 0;
 463 }
 464
 465 static struct pxaohci_platform_data cmx270_ohci_platform_data = {
 466         .port_mode      = PMM_PERPORT_MODE,
 467         .init           = cmx270_ohci_init,
 468 };
 469
 470
 471 static int cmx270_mci_init(struct device *dev,
 472                            irq_handler_t cmx270_detect_int,
 473                            void *data)
 474 {
 475         int err;
 476
 477         /*
 478          * setup GPIO for PXA27x MMC controller
 479          */
 480         pxa_gpio_mode(GPIO32_MMCCLK_MD);
 481         pxa_gpio_mode(GPIO112_MMCCMD_MD);
 482         pxa_gpio_mode(GPIO92_MMCDAT0_MD);
 483         pxa_gpio_mode(GPIO109_MMCDAT1_MD);
 484         pxa_gpio_mode(GPIO110_MMCDAT2_MD);
 485         pxa_gpio_mode(GPIO111_MMCDAT3_MD);
 486
 487         /* SB-X270 uses GPIO105 as SD power enable */
 488         pxa_gpio_mode(105 | GPIO_OUT);
 489
 490         /* card detect IRQ on GPIO 83 */
 491         pxa_gpio_mode(IRQ_TO_GPIO(CMX270_MMC_IRQ));
 492
 493         err = request_irq(CMX270_MMC_IRQ, cmx270_detect_int,
 494                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 495                           "MMC card detect", data);
 496         if (err)
 497                 printk(KERN_ERR "cmx270_mci_init: MMC/SD: can't"
 498                        " request MMC card detect IRQ\n");
 499
 500         return err;
 501 }
 502
 503 static void cmx270_mci_setpower(struct device *dev, unsigned int vdd)
 504 {
 505         struct pxamci_platform_data *p_d = dev->platform_data;
 506
 507         if ((1 << vdd) & p_d->ocr_mask) {
 508                 printk(KERN_DEBUG "%s: on\n", __func__);
 509                 GPCR(105) = GPIO_bit(105);
 510         } else {
 511                 GPSR(105) = GPIO_bit(105);
 512                 printk(KERN_DEBUG "%s: off\n", __func__);
 513         }
 514 }
 515
 516 static void cmx270_mci_exit(struct device *dev, void *data)
 517 {
 518         free_irq(CMX270_MMC_IRQ, data);
 519 }
 520
 521 static struct pxamci_platform_data cmx270_mci_platform_data = {
 522         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 523         .init           = cmx270_mci_init,
 524         .setpower       = cmx270_mci_setpower,
 525         .exit           = cmx270_mci_exit,
 526 };
 527
 528 #ifdef CONFIG_PM
 529 static unsigned long sleep_save_msc[10];
 530
 531 static int cmx270_suspend(struct sys_device *dev, pm_message_t state)
 532 {
 533         cmx270_pci_suspend();
 534
 535         /* save MSC registers */
 536         sleep_save_msc[0] = MSC0;
 537         sleep_save_msc[1] = MSC1;
 538         sleep_save_msc[2] = MSC2;
 539
 540         /* setup power saving mode registers */
 541         PCFR = 0x0;
 542         PSLR = 0xff400000;
 543         PMCR  = 0x00000005;
 544         PWER  = 0x80000000;
 545         PFER  = 0x00000000;
 546         PRER  = 0x00000000;
 547         PGSR0 = 0xC0018800;
 548         PGSR1 = 0x004F0002;
 549         PGSR2 = 0x6021C000;
 550         PGSR3 = 0x00020000;
 551
 552         return 0;
 553 }
 554
 555 static int cmx270_resume(struct sys_device *dev)
 556 {
 557         cmx270_pci_resume();
 558
 559         /* restore MSC registers */
 560         MSC0 = sleep_save_msc[0];
 561         MSC1 = sleep_save_msc[1];
 562         MSC2 = sleep_save_msc[2];
 563
 564         return 0;
 565 }
 566
 567 static struct sysdev_class cmx270_pm_sysclass = {
 568         .name = "pm",
 569         .resume = cmx270_resume,
 570         .suspend = cmx270_suspend,
 571 };
 572
 573 static struct sys_device cmx270_pm_device = {
 574         .cls = &cmx270_pm_sysclass,
 575 };
 576
 577 static int __init cmx270_pm_init(void)
 578 {
 579         int error;
 580         error = sysdev_class_register(&cmx270_pm_sysclass);
 581         if (error == 0)
 582                 error = sysdev_register(&cmx270_pm_device);
 583         return error;
 584 }
 585 #else
 586 static int __init cmx270_pm_init(void) { return 0; }
 587 #endif
 588
 589 static void __init cmx270_init(void)
 590 {
 591         cmx270_pm_init();
 592
 593         set_pxa_fb_info(cmx270_display);
 594
 595         /* register CM-X270 platform devices */
 596         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 597
 598         /* set MCI and OHCI platform parameters */
 599         pxa_set_mci_info(&cmx270_mci_platform_data);
 600         pxa_set_ohci_info(&cmx270_ohci_platform_data);
 601
 602         /* This enables the STUART */
 603         pxa_gpio_mode(GPIO46_STRXD_MD);
 604         pxa_gpio_mode(GPIO47_STTXD_MD);
 605
 606         /* This enables the BTUART  */
 607         pxa_gpio_mode(GPIO42_BTRXD_MD);
 608         pxa_gpio_mode(GPIO43_BTTXD_MD);
 609         pxa_gpio_mode(GPIO44_BTCTS_MD);
 610         pxa_gpio_mode(GPIO45_BTRTS_MD);
 611 }
 612
 613 static void __init cmx270_init_irq(void)
 614 {
 615         pxa27x_init_irq();
 616
 617
 618         cmx270_pci_init_irq();
 619
 620         /* Setup interrupt for dm9000 */
 621         pxa_gpio_mode(IRQ_TO_GPIO(CMX270_ETHIRQ));
 622         set_irq_type(CMX270_ETHIRQ, IRQT_RISING);
 623
 624         /* Setup interrupt for 2700G */
 625         pxa_gpio_mode(IRQ_TO_GPIO(CMX270_GFXIRQ));
 626         set_irq_type(CMX270_GFXIRQ, IRQT_FALLING);
 627 }
 628
 629 static void __init cmx270_map_io(void)
 630 {
 631         pxa_map_io();
 632         iotable_init(cmx270_io_desc, ARRAY_SIZE(cmx270_io_desc));
 633 }
 634
 635
 636 MACHINE_START(ARMCORE, "Compulab CM-x270")
 637         .boot_params    = 0xa0000100,
 638         .phys_io        = 0x40000000,
 639         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 640         .map_io         = cmx270_map_io,
 641         .init_irq       = cmx270_init_irq,
 642         .timer          = &pxa_timer,
 643         .init_machine   = cmx270_init,
 644 MACHINE_END