linux/arch/arm/mach-pxa/cm-x2xx.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * linux/arch/arm/mach-pxa/cm-x2xx.c
   4 *
   5 * Copyright (C) 2008 CompuLab, Ltd.
   6 * Mike Rapoport <mike@compulab.co.il>
   7 */
   8
   9#include <linux/platform_device.h>
  10#include <linux/syscore_ops.h>
  11#include <linux/irq.h>
  12#include <linux/gpio.h>
  13#include <linux/regulator/machine.h>
  14
  15#include <linux/dm9000.h>
  16#include <linux/leds.h>
  17
  18#include <asm/mach/arch.h>
  19#include <asm/mach-types.h>
  20#include <asm/mach/map.h>
  21
  22#include "pxa25x.h"
  23#undef GPIO24_SSP1_SFRM
  24#undef GPIO86_GPIO
  25#undef GPIO87_GPIO
  26#undef GPIO88_GPIO
  27#undef GPIO89_GPIO
  28#include "pxa27x.h"
  29#undef GPIO24_SSP1_SFRM
  30#undef GPIO86_GPIO
  31#undef GPIO87_GPIO
  32#undef GPIO88_GPIO
  33#undef GPIO89_GPIO
  34#include <mach/audio.h>
  35#include <linux/platform_data/video-pxafb.h>
  36#include <mach/smemc.h>
  37
  38#include <asm/hardware/it8152.h>
  39
  40#include "generic.h"
  41#include "cm-x2xx-pci.h"
  42
  43extern void cmx255_init(void);
  44extern void cmx270_init(void);
  45
  46/* reserve IRQs for IT8152 */
  47#define CMX2XX_NR_IRQS          (IRQ_BOARD_START + 40)
  48
  49/* virtual addresses for statically mapped regions */
  50#define CMX2XX_VIRT_BASE        (void __iomem *)(0xe8000000)
  51#define CMX2XX_IT8152_VIRT      (CMX2XX_VIRT_BASE)
  52
  53/* physical address if local-bus attached devices */
  54#define CMX255_DM9000_PHYS_BASE (PXA_CS1_PHYS + (8 << 22))
  55#define CMX270_DM9000_PHYS_BASE (PXA_CS1_PHYS + (6 << 22))
  56
  57/* leds */
  58#define CMX255_GPIO_RED         (27)
  59#define CMX255_GPIO_GREEN       (32)
  60#define CMX270_GPIO_RED         (93)
  61#define CMX270_GPIO_GREEN       (94)
  62
  63/* GPIO IRQ usage */
  64#define GPIO22_ETHIRQ           (22)
  65#define GPIO10_ETHIRQ           (10)
  66#define CMX255_GPIO_IT8152_IRQ  (0)
  67#define CMX270_GPIO_IT8152_IRQ  (22)
  68
  69#define CMX255_ETHIRQ           PXA_GPIO_TO_IRQ(GPIO22_ETHIRQ)
  70#define CMX270_ETHIRQ           PXA_GPIO_TO_IRQ(GPIO10_ETHIRQ)
  71
  72#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
  73static struct resource cmx255_dm9000_resource[] = {
  74        [0] = {
  75                .start = CMX255_DM9000_PHYS_BASE,
  76                .end   = CMX255_DM9000_PHYS_BASE + 3,
  77                .flags = IORESOURCE_MEM,
  78        },
  79        [1] = {
  80                .start = CMX255_DM9000_PHYS_BASE + 4,
  81                .end   = CMX255_DM9000_PHYS_BASE + 4 + 500,
  82                .flags = IORESOURCE_MEM,
  83        },
  84        [2] = {
  85                .start = CMX255_ETHIRQ,
  86                .end   = CMX255_ETHIRQ,
  87                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  88        }
  89};
  90
  91static struct resource cmx270_dm9000_resource[] = {
  92        [0] = {
  93                .start = CMX270_DM9000_PHYS_BASE,
  94                .end   = CMX270_DM9000_PHYS_BASE + 3,
  95                .flags = IORESOURCE_MEM,
  96        },
  97        [1] = {
  98                .start = CMX270_DM9000_PHYS_BASE + 8,
  99                .end   = CMX270_DM9000_PHYS_BASE + 8 + 500,
 100                .flags = IORESOURCE_MEM,
 101        },
 102        [2] = {
 103                .start = CMX270_ETHIRQ,
 104                .end   = CMX270_ETHIRQ,
 105                .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 106        }
 107};
 108
 109static struct dm9000_plat_data cmx270_dm9000_platdata = {
 110        .flags          = DM9000_PLATF_32BITONLY | DM9000_PLATF_NO_EEPROM,
 111};
 112
 113static struct platform_device cmx2xx_dm9000_device = {
 114        .name           = "dm9000",
 115        .id             = 0,
 116        .num_resources  = ARRAY_SIZE(cmx270_dm9000_resource),
 117        .dev            = {
 118                .platform_data = &cmx270_dm9000_platdata,
 119        }
 120};
 121
 122static void __init cmx2xx_init_dm9000(void)
 123{
 124        if (cpu_is_pxa25x())
 125                cmx2xx_dm9000_device.resource = cmx255_dm9000_resource;
 126        else
 127                cmx2xx_dm9000_device.resource = cmx270_dm9000_resource;
 128        platform_device_register(&cmx2xx_dm9000_device);
 129}
 130#else
 131static inline void cmx2xx_init_dm9000(void) {}
 132#endif
 133
 134/* UCB1400 touchscreen controller */
 135#if defined(CONFIG_TOUCHSCREEN_UCB1400) || defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
 136static struct platform_device cmx2xx_ts_device = {
 137        .name           = "ucb1400_core",
 138        .id             = -1,
 139};
 140
 141static void __init cmx2xx_init_touchscreen(void)
 142{
 143        platform_device_register(&cmx2xx_ts_device);
 144}
 145#else
 146static inline void cmx2xx_init_touchscreen(void) {}
 147#endif
 148
 149/* CM-X270 LEDs */
 150#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 151static struct gpio_led cmx2xx_leds[] = {
 152        [0] = {
 153                .name = "cm-x2xx:red",
 154                .default_trigger = "nand-disk",
 155                .active_low = 1,
 156        },
 157        [1] = {
 158                .name = "cm-x2xx:green",
 159                .default_trigger = "heartbeat",
 160                .active_low = 1,
 161        },
 162};
 163
 164static struct gpio_led_platform_data cmx2xx_gpio_led_pdata = {
 165        .num_leds = ARRAY_SIZE(cmx2xx_leds),
 166        .leds = cmx2xx_leds,
 167};
 168
 169static struct platform_device cmx2xx_led_device = {
 170        .name           = "leds-gpio",
 171        .id             = -1,
 172        .dev            = {
 173                .platform_data = &cmx2xx_gpio_led_pdata,
 174        },
 175};
 176
 177static void __init cmx2xx_init_leds(void)
 178{
 179        if (cpu_is_pxa25x()) {
 180                cmx2xx_leds[0].gpio = CMX255_GPIO_RED;
 181                cmx2xx_leds[1].gpio = CMX255_GPIO_GREEN;
 182        } else {
 183                cmx2xx_leds[0].gpio = CMX270_GPIO_RED;
 184                cmx2xx_leds[1].gpio = CMX270_GPIO_GREEN;
 185        }
 186        platform_device_register(&cmx2xx_led_device);
 187}
 188#else
 189static inline void cmx2xx_init_leds(void) {}
 190#endif
 191
 192#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 193/*
 194  Display definitions
 195  keep these for backwards compatibility, although symbolic names (as
 196  e.g. in lpd270.c) looks better
 197*/
 198#define MTYPE_STN320x240        0
 199#define MTYPE_TFT640x480        1
 200#define MTYPE_CRT640x480        2
 201#define MTYPE_CRT800x600        3
 202#define MTYPE_TFT320x240        6
 203#define MTYPE_STN640x480        7
 204
 205static struct pxafb_mode_info generic_stn_320x240_mode = {
 206        .pixclock       = 76923,
 207        .bpp            = 8,
 208        .xres           = 320,
 209        .yres           = 240,
 210        .hsync_len      = 3,
 211        .vsync_len      = 2,
 212        .left_margin    = 3,
 213        .upper_margin   = 0,
 214        .right_margin   = 3,
 215        .lower_margin   = 0,
 216        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 217                           FB_SYNC_VERT_HIGH_ACT),
 218        .cmap_greyscale = 0,
 219};
 220
 221static struct pxafb_mach_info generic_stn_320x240 = {
 222        .modes          = &generic_stn_320x240_mode,
 223        .num_modes      = 1,
 224        .lcd_conn       = LCD_COLOR_STN_8BPP | LCD_PCLK_EDGE_FALL |\
 225                          LCD_AC_BIAS_FREQ(0xff),
 226        .cmap_inverse   = 0,
 227        .cmap_static    = 0,
 228};
 229
 230static struct pxafb_mode_info generic_tft_640x480_mode = {
 231        .pixclock       = 38461,
 232        .bpp            = 8,
 233        .xres           = 640,
 234        .yres           = 480,
 235        .hsync_len      = 60,
 236        .vsync_len      = 2,
 237        .left_margin    = 70,
 238        .upper_margin   = 10,
 239        .right_margin   = 70,
 240        .lower_margin   = 5,
 241        .sync           = 0,
 242        .cmap_greyscale = 0,
 243};
 244
 245static struct pxafb_mach_info generic_tft_640x480 = {
 246        .modes          = &generic_tft_640x480_mode,
 247        .num_modes      = 1,
 248        .lcd_conn       = LCD_COLOR_TFT_8BPP | LCD_PCLK_EDGE_FALL |\
 249                          LCD_AC_BIAS_FREQ(0xff),
 250        .cmap_inverse   = 0,
 251        .cmap_static    = 0,
 252};
 253
 254static struct pxafb_mode_info generic_crt_640x480_mode = {
 255        .pixclock       = 38461,
 256        .bpp            = 8,
 257        .xres           = 640,
 258        .yres           = 480,
 259        .hsync_len      = 63,
 260        .vsync_len      = 2,
 261        .left_margin    = 81,
 262        .upper_margin   = 33,
 263        .right_margin   = 16,
 264        .lower_margin   = 10,
 265        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 266                           FB_SYNC_VERT_HIGH_ACT),
 267        .cmap_greyscale = 0,
 268};
 269
 270static struct pxafb_mach_info generic_crt_640x480 = {
 271        .modes          = &generic_crt_640x480_mode,
 272        .num_modes      = 1,
 273        .lcd_conn       = LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
 274        .cmap_inverse   = 0,
 275        .cmap_static    = 0,
 276};
 277
 278static struct pxafb_mode_info generic_crt_800x600_mode = {
 279        .pixclock       = 28846,
 280        .bpp            = 8,
 281        .xres           = 800,
 282        .yres           = 600,
 283        .hsync_len      = 63,
 284        .vsync_len      = 2,
 285        .left_margin    = 26,
 286        .upper_margin   = 21,
 287        .right_margin   = 26,
 288        .lower_margin   = 11,
 289        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 290                           FB_SYNC_VERT_HIGH_ACT),
 291        .cmap_greyscale = 0,
 292};
 293
 294static struct pxafb_mach_info generic_crt_800x600 = {
 295        .modes          = &generic_crt_800x600_mode,
 296        .num_modes      = 1,
 297        .lcd_conn       = LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
 298        .cmap_inverse   = 0,
 299        .cmap_static    = 0,
 300};
 301
 302static struct pxafb_mode_info generic_tft_320x240_mode = {
 303        .pixclock       = 134615,
 304        .bpp            = 16,
 305        .xres           = 320,
 306        .yres           = 240,
 307        .hsync_len      = 63,
 308        .vsync_len      = 7,
 309        .left_margin    = 75,
 310        .upper_margin   = 0,
 311        .right_margin   = 15,
 312        .lower_margin   = 15,
 313        .sync           = 0,
 314        .cmap_greyscale = 0,
 315};
 316
 317static struct pxafb_mach_info generic_tft_320x240 = {
 318        .modes          = &generic_tft_320x240_mode,
 319        .num_modes      = 1,
 320        .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_AC_BIAS_FREQ(0xff),
 321        .cmap_inverse   = 0,
 322        .cmap_static    = 0,
 323};
 324
 325static struct pxafb_mode_info generic_stn_640x480_mode = {
 326        .pixclock       = 57692,
 327        .bpp            = 8,
 328        .xres           = 640,
 329        .yres           = 480,
 330        .hsync_len      = 4,
 331        .vsync_len      = 2,
 332        .left_margin    = 10,
 333        .upper_margin   = 5,
 334        .right_margin   = 10,
 335        .lower_margin   = 5,
 336        .sync           = (FB_SYNC_HOR_HIGH_ACT |
 337                           FB_SYNC_VERT_HIGH_ACT),
 338        .cmap_greyscale = 0,
 339};
 340
 341static struct pxafb_mach_info generic_stn_640x480 = {
 342        .modes          = &generic_stn_640x480_mode,
 343        .num_modes      = 1,
 344        .lcd_conn       = LCD_COLOR_STN_8BPP | LCD_AC_BIAS_FREQ(0xff),
 345        .cmap_inverse   = 0,
 346        .cmap_static    = 0,
 347};
 348
 349static struct pxafb_mach_info *cmx2xx_display = &generic_crt_640x480;
 350
 351static int __init cmx2xx_set_display(char *str)
 352{
 353        int disp_type = simple_strtol(str, NULL, 0);
 354        switch (disp_type) {
 355        case MTYPE_STN320x240:
 356                cmx2xx_display = &generic_stn_320x240;
 357                break;
 358        case MTYPE_TFT640x480:
 359                cmx2xx_display = &generic_tft_640x480;
 360                break;
 361        case MTYPE_CRT640x480:
 362                cmx2xx_display = &generic_crt_640x480;
 363                break;
 364        case MTYPE_CRT800x600:
 365                cmx2xx_display = &generic_crt_800x600;
 366                break;
 367        case MTYPE_TFT320x240:
 368                cmx2xx_display = &generic_tft_320x240;
 369                break;
 370        case MTYPE_STN640x480:
 371                cmx2xx_display = &generic_stn_640x480;
 372                break;
 373        default: /* fallback to CRT 640x480 */
 374                cmx2xx_display = &generic_crt_640x480;
 375                break;
 376        }
 377        return 1;
 378}
 379
 380/*
 381   This should be done really early to get proper configuration for
 382   frame buffer.
 383   Indeed, pxafb parameters can be used istead, but CM-X2XX bootloader
 384   has limitied line length for kernel command line, and also it will
 385   break compatibitlty with proprietary releases already in field.
 386*/
 387__setup("monitor=", cmx2xx_set_display);
 388
 389static void __init cmx2xx_init_display(void)
 390{
 391        pxa_set_fb_info(NULL, cmx2xx_display);
 392}
 393#else
 394static inline void cmx2xx_init_display(void) {}
 395#endif
 396
 397#ifdef CONFIG_PM
 398static unsigned long sleep_save_msc[10];
 399
 400static int cmx2xx_suspend(void)
 401{
 402        cmx2xx_pci_suspend();
 403
 404        /* save MSC registers */
 405        sleep_save_msc[0] = __raw_readl(MSC0);
 406        sleep_save_msc[1] = __raw_readl(MSC1);
 407        sleep_save_msc[2] = __raw_readl(MSC2);
 408
 409        /* setup power saving mode registers */
 410        PCFR = 0x0;
 411        PSLR = 0xff400000;
 412        PMCR  = 0x00000005;
 413        PWER  = 0x80000000;
 414        PFER  = 0x00000000;
 415        PRER  = 0x00000000;
 416        PGSR0 = 0xC0018800;
 417        PGSR1 = 0x004F0002;
 418        PGSR2 = 0x6021C000;
 419        PGSR3 = 0x00020000;
 420
 421        return 0;
 422}
 423
 424static void cmx2xx_resume(void)
 425{
 426        cmx2xx_pci_resume();
 427
 428        /* restore MSC registers */
 429        __raw_writel(sleep_save_msc[0], MSC0);
 430        __raw_writel(sleep_save_msc[1], MSC1);
 431        __raw_writel(sleep_save_msc[2], MSC2);
 432}
 433
 434static struct syscore_ops cmx2xx_pm_syscore_ops = {
 435        .resume = cmx2xx_resume,
 436        .suspend = cmx2xx_suspend,
 437};
 438
 439static int __init cmx2xx_pm_init(void)
 440{
 441        register_syscore_ops(&cmx2xx_pm_syscore_ops);
 442
 443        return 0;
 444}
 445#else
 446static int __init cmx2xx_pm_init(void) { return 0; }
 447#endif
 448
 449#if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
 450static void __init cmx2xx_init_ac97(void)
 451{
 452        pxa_set_ac97_info(NULL);
 453}
 454#else
 455static inline void cmx2xx_init_ac97(void) {}
 456#endif
 457
 458static void __init cmx2xx_init(void)
 459{
 460        pxa_set_ffuart_info(NULL);
 461        pxa_set_btuart_info(NULL);
 462        pxa_set_stuart_info(NULL);
 463
 464        cmx2xx_pm_init();
 465
 466        if (cpu_is_pxa25x())
 467                cmx255_init();
 468        else
 469                cmx270_init();
 470
 471        cmx2xx_init_dm9000();
 472        cmx2xx_init_display();
 473        cmx2xx_init_ac97();
 474        cmx2xx_init_touchscreen();
 475        cmx2xx_init_leds();
 476
 477        regulator_has_full_constraints();
 478}
 479
 480static void __init cmx2xx_init_irq(void)
 481{
 482        if (cpu_is_pxa25x()) {
 483                pxa25x_init_irq();
 484                cmx2xx_pci_init_irq(CMX255_GPIO_IT8152_IRQ);
 485        } else {
 486                pxa27x_init_irq();
 487                cmx2xx_pci_init_irq(CMX270_GPIO_IT8152_IRQ);
 488        }
 489}
 490
 491#ifdef CONFIG_PCI
 492/* Map PCI companion statically */
 493static struct map_desc cmx2xx_io_desc[] __initdata = {
 494        [0] = { /* PCI bridge */
 495                .virtual        = (unsigned long)CMX2XX_IT8152_VIRT,
 496                .pfn            = __phys_to_pfn(PXA_CS4_PHYS),
 497                .length         = SZ_64M,
 498                .type           = MT_DEVICE
 499        },
 500};
 501
 502static void __init cmx2xx_map_io(void)
 503{
 504        if (cpu_is_pxa25x())
 505                pxa25x_map_io();
 506
 507        if (cpu_is_pxa27x())
 508                pxa27x_map_io();
 509
 510        iotable_init(cmx2xx_io_desc, ARRAY_SIZE(cmx2xx_io_desc));
 511
 512        it8152_base_address = CMX2XX_IT8152_VIRT;
 513}
 514#else
 515static void __init cmx2xx_map_io(void)
 516{
 517        if (cpu_is_pxa25x())
 518                pxa25x_map_io();
 519
 520        if (cpu_is_pxa27x())
 521                pxa27x_map_io();
 522}
 523#endif
 524
 525MACHINE_START(ARMCORE, "Compulab CM-X2XX")
 526        .atag_offset    = 0x100,
 527        .map_io         = cmx2xx_map_io,
 528        .nr_irqs        = CMX2XX_NR_IRQS,
 529        .init_irq       = cmx2xx_init_irq,
 530        /* NOTE: pxa25x_handle_irq() works on PXA27x w/o camera support */
 531        .handle_irq     = pxa25x_handle_irq,
 532        .init_time      = pxa_timer_init,
 533        .init_machine   = cmx2xx_init,
 534#ifdef CONFIG_PCI
 535        .dma_zone_size  = SZ_64M,
 536#endif
 537        .restart        = pxa_restart,
 538MACHINE_END
 539