linux/arch/arm/mach-pxa/cm-x2xx.c
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   1/*
   2 * linux/arch/arm/mach-pxa/cm-x2xx.c
   3 *
   4 * Copyright (C) 2008 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/platform_device.h>
  13#include <linux/syscore_ops.h>
  14#include <linux/irq.h>
  15#include <linux/gpio.h>
  16#include <linux/regulator/machine.h>
  17
  18#include <linux/dm9000.h>
  19#include <linux/leds.h>
  20
  21#include <asm/mach/arch.h>
  22#include <asm/mach-types.h>
  23#include <asm/mach/map.h>
  24
  25#include "pxa25x.h"
  26#undef GPIO24_SSP1_SFRM
  27#undef GPIO86_GPIO
  28#undef GPIO87_GPIO
  29#undef GPIO88_GPIO
  30#undef GPIO89_GPIO
  31#include "pxa27x.h"
  32#undef GPIO24_SSP1_SFRM
  33#undef GPIO86_GPIO
  34#undef GPIO87_GPIO
  35#undef GPIO88_GPIO
  36#undef GPIO89_GPIO
  37#include <mach/audio.h>
  38#include <linux/platform_data/video-pxafb.h>
  39#include <mach/smemc.h>
  40
  41#include <asm/hardware/it8152.h>
  42
  43#include "generic.h"
  44#include "cm-x2xx-pci.h"
  45
  46extern void cmx255_init(void);
  47extern void cmx270_init(void);
  48
  49/* reserve IRQs for IT8152 */
  50#define CMX2XX_NR_IRQS          (IRQ_BOARD_START + 40)
  51
  52/* virtual addresses for statically mapped regions */
  53#define CMX2XX_VIRT_BASE        (void __iomem *)(0xe8000000)
  54#define CMX2XX_IT8152_VIRT      (CMX2XX_VIRT_BASE)
  55
  56/* physical address if local-bus attached devices */
  57#define CMX255_DM9000_PHYS_BASE (PXA_CS1_PHYS + (8 << 22))
  58#define CMX270_DM9000_PHYS_BASE (PXA_CS1_PHYS + (6 << 22))
  59
  60/* leds */
  61#define CMX255_GPIO_RED         (27)
  62#define CMX255_GPIO_GREEN       (32)
  63#define CMX270_GPIO_RED         (93)
  64#define CMX270_GPIO_GREEN       (94)
  65
  66/* GPIO IRQ usage */
  67#define GPIO22_ETHIRQ           (22)
  68#define GPIO10_ETHIRQ           (10)
  69#define CMX255_GPIO_IT8152_IRQ  (0)
  70#define CMX270_GPIO_IT8152_IRQ  (22)
  71
  72#define CMX255_ETHIRQ           PXA_GPIO_TO_IRQ(GPIO22_ETHIRQ)
  73#define CMX270_ETHIRQ           PXA_GPIO_TO_IRQ(GPIO10_ETHIRQ)
  74
  75#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
  76static struct resource cmx255_dm9000_resource[] = {
  77        [0] = {
  78                .start = CMX255_DM9000_PHYS_BASE,
  79                .end   = CMX255_DM9000_PHYS_BASE + 3,
  80                .flags = IORESOURCE_MEM,
  81        },
  82        [1] = {
  83                .start = CMX255_DM9000_PHYS_BASE + 4,
  84                .end   = CMX255_DM9000_PHYS_BASE + 4 + 500,
  85                .flags = IORESOURCE_MEM,
  86        },
  87        [2] = {
  88                .start = CMX255_ETHIRQ,
  89                .end   = CMX255_ETHIRQ,
  90                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  91        }
  92};
  93
  94static struct resource cmx270_dm9000_resource[] = {
  95        [0] = {
  96                .start = CMX270_DM9000_PHYS_BASE,
  97                .end   = CMX270_DM9000_PHYS_BASE + 3,
  98                .flags = IORESOURCE_MEM,
  99        },
 100        [1] = {
 101                .start = CMX270_DM9000_PHYS_BASE + 8,
 102                .end   = CMX270_DM9000_PHYS_BASE + 8 + 500,
 103                .flags = IORESOURCE_MEM,
 104        },
 105        [2] = {
 106                .start = CMX270_ETHIRQ,
 107                .end   = CMX270_ETHIRQ,
 108                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 109        }
 110};
 111
 112static struct dm9000_plat_data cmx270_dm9000_platdata = {
 113        .flags          = DM9000_PLATF_32BITONLY | DM9000_PLATF_NO_EEPROM,
 114};
 115
 116static struct platform_device cmx2xx_dm9000_device = {
 117        .name           = "dm9000",
 118        .id             = 0,
 119        .num_resources  = ARRAY_SIZE(cmx270_dm9000_resource),
 120        .dev            = {
 121                .platform_data = &cmx270_dm9000_platdata,
 122        }
 123};
 124
 125static void __init cmx2xx_init_dm9000(void)
 126{
 127        if (cpu_is_pxa25x())
 128                cmx2xx_dm9000_device.resource = cmx255_dm9000_resource;
 129        else
 130                cmx2xx_dm9000_device.resource = cmx270_dm9000_resource;
 131        platform_device_register(&cmx2xx_dm9000_device);
 132}
 133#else
 134static inline void cmx2xx_init_dm9000(void) {}
 135#endif
 136
 137/* UCB1400 touchscreen controller */
 138#if defined(CONFIG_TOUCHSCREEN_UCB1400) || defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
 139static struct platform_device cmx2xx_ts_device = {
 140        .name           = "ucb1400_core",
 141        .id             = -1,
 142};
 143
 144static void __init cmx2xx_init_touchscreen(void)
 145{
 146        platform_device_register(&cmx2xx_ts_device);
 147}
 148#else
 149static inline void cmx2xx_init_touchscreen(void) {}
 150#endif
 151
 152/* CM-X270 LEDs */
 153#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 154static struct gpio_led cmx2xx_leds[] = {
 155        [0] = {
 156                .name = "cm-x2xx:red",
 157                .default_trigger = "nand-disk",
 158                .active_low = 1,
 159        },
 160        [1] = {
 161                .name = "cm-x2xx:green",
 162                .default_trigger = "heartbeat",
 163                .active_low = 1,
 164        },
 165};
 166
 167static struct gpio_led_platform_data cmx2xx_gpio_led_pdata = {
 168        .num_leds = ARRAY_SIZE(cmx2xx_leds),
 169        .leds = cmx2xx_leds,
 170};
 171
 172static struct platform_device cmx2xx_led_device = {
 173        .name           = "leds-gpio",
 174        .id             = -1,
 175        .dev            = {
 176                .platform_data = &cmx2xx_gpio_led_pdata,
 177        },
 178};
 179
 180static void __init cmx2xx_init_leds(void)
 181{
 182        if (cpu_is_pxa25x()) {
 183                cmx2xx_leds[0].gpio = CMX255_GPIO_RED;
 184                cmx2xx_leds[1].gpio = CMX255_GPIO_GREEN;
 185        } else {
 186                cmx2xx_leds[0].gpio = CMX270_GPIO_RED;
 187                cmx2xx_leds[1].gpio = CMX270_GPIO_GREEN;
 188        }
 189        platform_device_register(&cmx2xx_led_device);
 190}
 191#else
 192static inline void cmx2xx_init_leds(void) {}
 193#endif
 194
 195#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 196/*
 197  Display definitions
 198  keep these for backwards compatibility, although symbolic names (as
 199  e.g. in lpd270.c) looks better
 200*/
 201#define MTYPE_STN320x240        0
 202#define MTYPE_TFT640x480        1
 203#define MTYPE_CRT640x480        2
 204#define MTYPE_CRT800x600        3
 205#define MTYPE_TFT320x240        6
 206#define MTYPE_STN640x480        7
 207
 208static struct pxafb_mode_info generic_stn_320x240_mode = {
 209        .pixclock       = 76923,
 210        .bpp            = 8,
 211        .xres           = 320,
 212        .yres           = 240,
 213        .hsync_len      = 3,
 214        .vsync_len      = 2,
 215        .left_margin    = 3,
 216        .upper_margin   = 0,
 217        .right_margin   = 3,
 218        .lower_margin   = 0,
 219        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 220                           FB_SYNC_VERT_HIGH_ACT),
 221        .cmap_greyscale = 0,
 222};
 223
 224static struct pxafb_mach_info generic_stn_320x240 = {
 225        .modes          = &generic_stn_320x240_mode,
 226        .num_modes      = 1,
 227        .lcd_conn       = LCD_COLOR_STN_8BPP | LCD_PCLK_EDGE_FALL |\
 228                          LCD_AC_BIAS_FREQ(0xff),
 229        .cmap_inverse   = 0,
 230        .cmap_static    = 0,
 231};
 232
 233static struct pxafb_mode_info generic_tft_640x480_mode = {
 234        .pixclock       = 38461,
 235        .bpp            = 8,
 236        .xres           = 640,
 237        .yres           = 480,
 238        .hsync_len      = 60,
 239        .vsync_len      = 2,
 240        .left_margin    = 70,
 241        .upper_margin   = 10,
 242        .right_margin   = 70,
 243        .lower_margin   = 5,
 244        .sync           = 0,
 245        .cmap_greyscale = 0,
 246};
 247
 248static struct pxafb_mach_info generic_tft_640x480 = {
 249        .modes          = &generic_tft_640x480_mode,
 250        .num_modes      = 1,
 251        .lcd_conn       = LCD_COLOR_TFT_8BPP | LCD_PCLK_EDGE_FALL |\
 252                          LCD_AC_BIAS_FREQ(0xff),
 253        .cmap_inverse   = 0,
 254        .cmap_static    = 0,
 255};
 256
 257static struct pxafb_mode_info generic_crt_640x480_mode = {
 258        .pixclock       = 38461,
 259        .bpp            = 8,
 260        .xres           = 640,
 261        .yres           = 480,
 262        .hsync_len      = 63,
 263        .vsync_len      = 2,
 264        .left_margin    = 81,
 265        .upper_margin   = 33,
 266        .right_margin   = 16,
 267        .lower_margin   = 10,
 268        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 269                           FB_SYNC_VERT_HIGH_ACT),
 270        .cmap_greyscale = 0,
 271};
 272
 273static struct pxafb_mach_info generic_crt_640x480 = {
 274        .modes          = &generic_crt_640x480_mode,
 275        .num_modes      = 1,
 276        .lcd_conn       = LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
 277        .cmap_inverse   = 0,
 278        .cmap_static    = 0,
 279};
 280
 281static struct pxafb_mode_info generic_crt_800x600_mode = {
 282        .pixclock       = 28846,
 283        .bpp            = 8,
 284        .xres           = 800,
 285        .yres           = 600,
 286        .hsync_len      = 63,
 287        .vsync_len      = 2,
 288        .left_margin    = 26,
 289        .upper_margin   = 21,
 290        .right_margin   = 26,
 291        .lower_margin   = 11,
 292        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 293                           FB_SYNC_VERT_HIGH_ACT),
 294        .cmap_greyscale = 0,
 295};
 296
 297static struct pxafb_mach_info generic_crt_800x600 = {
 298        .modes          = &generic_crt_800x600_mode,
 299        .num_modes      = 1,
 300        .lcd_conn       = LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
 301        .cmap_inverse   = 0,
 302        .cmap_static    = 0,
 303};
 304
 305static struct pxafb_mode_info generic_tft_320x240_mode = {
 306        .pixclock       = 134615,
 307        .bpp            = 16,
 308        .xres           = 320,
 309        .yres           = 240,
 310        .hsync_len      = 63,
 311        .vsync_len      = 7,
 312        .left_margin    = 75,
 313        .upper_margin   = 0,
 314        .right_margin   = 15,
 315        .lower_margin   = 15,
 316        .sync           = 0,
 317        .cmap_greyscale = 0,
 318};
 319
 320static struct pxafb_mach_info generic_tft_320x240 = {
 321        .modes          = &generic_tft_320x240_mode,
 322        .num_modes      = 1,
 323        .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_AC_BIAS_FREQ(0xff),
 324        .cmap_inverse   = 0,
 325        .cmap_static    = 0,
 326};
 327
 328static struct pxafb_mode_info generic_stn_640x480_mode = {
 329        .pixclock       = 57692,
 330        .bpp            = 8,
 331        .xres           = 640,
 332        .yres           = 480,
 333        .hsync_len      = 4,
 334        .vsync_len      = 2,
 335        .left_margin    = 10,
 336        .upper_margin   = 5,
 337        .right_margin   = 10,
 338        .lower_margin   = 5,
 339        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 340                           FB_SYNC_VERT_HIGH_ACT),
 341        .cmap_greyscale = 0,
 342};
 343
 344static struct pxafb_mach_info generic_stn_640x480 = {
 345        .modes          = &generic_stn_640x480_mode,
 346        .num_modes      = 1,
 347        .lcd_conn       = LCD_COLOR_STN_8BPP | LCD_AC_BIAS_FREQ(0xff),
 348        .cmap_inverse   = 0,
 349        .cmap_static    = 0,
 350};
 351
 352static struct pxafb_mach_info *cmx2xx_display = &generic_crt_640x480;
 353
 354static int __init cmx2xx_set_display(char *str)
 355{
 356        int disp_type = simple_strtol(str, NULL, 0);
 357        switch (disp_type) {
 358        case MTYPE_STN320x240:
 359                cmx2xx_display = &generic_stn_320x240;
 360                break;
 361        case MTYPE_TFT640x480:
 362                cmx2xx_display = &generic_tft_640x480;
 363                break;
 364        case MTYPE_CRT640x480:
 365                cmx2xx_display = &generic_crt_640x480;
 366                break;
 367        case MTYPE_CRT800x600:
 368                cmx2xx_display = &generic_crt_800x600;
 369                break;
 370        case MTYPE_TFT320x240:
 371                cmx2xx_display = &generic_tft_320x240;
 372                break;
 373        case MTYPE_STN640x480:
 374                cmx2xx_display = &generic_stn_640x480;
 375                break;
 376        default: /* fallback to CRT 640x480 */
 377                cmx2xx_display = &generic_crt_640x480;
 378                break;
 379        }
 380        return 1;
 381}
 382
 383/*
 384   This should be done really early to get proper configuration for
 385   frame buffer.
 386   Indeed, pxafb parameters can be used istead, but CM-X2XX bootloader
 387   has limitied line length for kernel command line, and also it will
 388   break compatibitlty with proprietary releases already in field.
 389*/
 390__setup("monitor=", cmx2xx_set_display);
 391
 392static void __init cmx2xx_init_display(void)
 393{
 394        pxa_set_fb_info(NULL, cmx2xx_display);
 395}
 396#else
 397static inline void cmx2xx_init_display(void) {}
 398#endif
 399
 400#ifdef CONFIG_PM
 401static unsigned long sleep_save_msc[10];
 402
 403static int cmx2xx_suspend(void)
 404{
 405        cmx2xx_pci_suspend();
 406
 407        /* save MSC registers */
 408        sleep_save_msc[0] = __raw_readl(MSC0);
 409        sleep_save_msc[1] = __raw_readl(MSC1);
 410        sleep_save_msc[2] = __raw_readl(MSC2);
 411
 412        /* setup power saving mode registers */
 413        PCFR = 0x0;
 414        PSLR = 0xff400000;
 415        PMCR  = 0x00000005;
 416        PWER  = 0x80000000;
 417        PFER  = 0x00000000;
 418        PRER  = 0x00000000;
 419        PGSR0 = 0xC0018800;
 420        PGSR1 = 0x004F0002;
 421        PGSR2 = 0x6021C000;
 422        PGSR3 = 0x00020000;
 423
 424        return 0;
 425}
 426
 427static void cmx2xx_resume(void)
 428{
 429        cmx2xx_pci_resume();
 430
 431        /* restore MSC registers */
 432        __raw_writel(sleep_save_msc[0], MSC0);
 433        __raw_writel(sleep_save_msc[1], MSC1);
 434        __raw_writel(sleep_save_msc[2], MSC2);
 435}
 436
 437static struct syscore_ops cmx2xx_pm_syscore_ops = {
 438        .resume = cmx2xx_resume,
 439        .suspend = cmx2xx_suspend,
 440};
 441
 442static int __init cmx2xx_pm_init(void)
 443{
 444        register_syscore_ops(&cmx2xx_pm_syscore_ops);
 445
 446        return 0;
 447}
 448#else
 449static int __init cmx2xx_pm_init(void) { return 0; }
 450#endif
 451
 452#if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
 453static void __init cmx2xx_init_ac97(void)
 454{
 455        pxa_set_ac97_info(NULL);
 456}
 457#else
 458static inline void cmx2xx_init_ac97(void) {}
 459#endif
 460
 461static void __init cmx2xx_init(void)
 462{
 463        pxa_set_ffuart_info(NULL);
 464        pxa_set_btuart_info(NULL);
 465        pxa_set_stuart_info(NULL);
 466
 467        cmx2xx_pm_init();
 468
 469        if (cpu_is_pxa25x())
 470                cmx255_init();
 471        else
 472                cmx270_init();
 473
 474        cmx2xx_init_dm9000();
 475        cmx2xx_init_display();
 476        cmx2xx_init_ac97();
 477        cmx2xx_init_touchscreen();
 478        cmx2xx_init_leds();
 479
 480        regulator_has_full_constraints();
 481}
 482
 483static void __init cmx2xx_init_irq(void)
 484{
 485        if (cpu_is_pxa25x()) {
 486                pxa25x_init_irq();
 487                cmx2xx_pci_init_irq(CMX255_GPIO_IT8152_IRQ);
 488        } else {
 489                pxa27x_init_irq();
 490                cmx2xx_pci_init_irq(CMX270_GPIO_IT8152_IRQ);
 491        }
 492}
 493
 494#ifdef CONFIG_PCI
 495/* Map PCI companion statically */
 496static struct map_desc cmx2xx_io_desc[] __initdata = {
 497        [0] = { /* PCI bridge */
 498                .virtual        = (unsigned long)CMX2XX_IT8152_VIRT,
 499                .pfn            = __phys_to_pfn(PXA_CS4_PHYS),
 500                .length         = SZ_64M,
 501                .type           = MT_DEVICE
 502        },
 503};
 504
 505static void __init cmx2xx_map_io(void)
 506{
 507        if (cpu_is_pxa25x())
 508                pxa25x_map_io();
 509
 510        if (cpu_is_pxa27x())
 511                pxa27x_map_io();
 512
 513        iotable_init(cmx2xx_io_desc, ARRAY_SIZE(cmx2xx_io_desc));
 514
 515        it8152_base_address = CMX2XX_IT8152_VIRT;
 516}
 517#else
 518static void __init cmx2xx_map_io(void)
 519{
 520        if (cpu_is_pxa25x())
 521                pxa25x_map_io();
 522
 523        if (cpu_is_pxa27x())
 524                pxa27x_map_io();
 525}
 526#endif
 527
 528MACHINE_START(ARMCORE, "Compulab CM-X2XX")
 529        .atag_offset    = 0x100,
 530        .map_io         = cmx2xx_map_io,
 531        .nr_irqs        = CMX2XX_NR_IRQS,
 532        .init_irq       = cmx2xx_init_irq,
 533        /* NOTE: pxa25x_handle_irq() works on PXA27x w/o camera support */
 534        .handle_irq     = pxa25x_handle_irq,
 535        .init_time      = pxa_timer_init,
 536        .init_machine   = cmx2xx_init,
 537#ifdef CONFIG_PCI
 538        .dma_zone_size  = SZ_64M,
 539#endif
 540        .restart        = pxa_restart,
 541MACHINE_END
 542