C++ dmi_check_system函数代码示例

static int __init samsung_init(void)
{
        struct device *parent=NULL;	

	if (use_sabi && !dmi_check_system(samsung_sabi_dmi_table) && !force){
	    printk(KERN_ERR "Samsung-backlight is intended to work only with Samsung laptops.\n");
	    return -ENODEV;
	}
        if (!use_sabi && !dmi_check_system(samsung_dmi_table) && !force){
	    printk(KERN_ERR "Sorry, your laptop is not supported. Try use_sabi=1\n");
	    return -ENODEV;
        }

        if(use_sabi){
	    const char *test_str = "[email protected]";
	    int pos;
	    int index = 0;
	    void __iomem *base;
	    unsigned int ifaceP;
	
	    mutex_init(&sabi_mutex);
	
	    f0000_segment = ioremap(0xf0000, 0xffff);
	    if (!f0000_segment) {
	        printk(KERN_ERR "Samsung-backlight: Can't map the segment at 0xf0000\n");
	        return -EINVAL;
	    }
	
	    printk(KERN_INFO "Samsung-backlight: checking for SABI support.\n");
	
	    /* Try to find the signature "[email protected]" in memory to find the header */
	    base = f0000_segment;
	    for (pos = 0; pos < 0xffff; ++pos) {
	        char temp = readb(base + pos);
	        if (temp == test_str[index]) {
	            if (5 == index++)
	                break;
	        }
	        else {
	            index = 0;
	        }
	    }
	    if (pos == 0xffff) {
	        printk(KERN_INFO "Samsung-backlight: SABI is not supported\n");
	        iounmap(f0000_segment);
	        return -EINVAL;
	    }
	
	    sabi = (struct sabi_header __iomem *)(base + pos + 1);
	
	    printk(KERN_INFO "Samsung-backlight: SABI is supported (%x)\n", pos + 0xf0000 - 6);
	    if (debug) {
	        printk(KERN_DEBUG "SABI header:\n");
	        printk(KERN_DEBUG " SMI Port Number = 0x%04x\n", readw(&sabi->port));
	        printk(KERN_DEBUG " SMI Interface Function = 0x%02x\n", readb(&sabi->iface_func));
	        printk(KERN_DEBUG " SMI enable memory buffer = 0x%02x\n", readb(&sabi->en_mem));
	        printk(KERN_DEBUG " SMI restore memory buffer = 0x%02x\n", readb(&sabi->re_mem));
	        printk(KERN_DEBUG " SABI data offset = 0x%04x\n", readw(&sabi->data_offset));
	        printk(KERN_DEBUG " SABI data segment = 0x%04x\n", readw(&sabi->data_segment));
	        printk(KERN_DEBUG " BIOS interface version = 0x%02x\n", readb(&sabi->bios_ifver));
	        printk(KERN_DEBUG " KBD Launcher string = 0x%02x\n", readb(&sabi->launcher_string));
	    }
	
	    /* Get a pointer to the SABI Interface */
	    ifaceP = (readw(&sabi->data_segment) & 0x0ffff) << 4;
	    ifaceP += readw(&sabi->data_offset) & 0x0ffff;
	    sabi_iface = (struct sabi_interface __iomem *)ioremap(ifaceP, 16);
	    if (!sabi_iface) {
	        printk(KERN_ERR "Samsung-backlight: Can't remap %x\n", ifaceP);
	        iounmap(f0000_segment);
	        return -EINVAL;
	    }
	
	    if (debug) {
	        printk(KERN_DEBUG "Samsung-backlight: SABI Interface = %p\n", sabi_iface);
	    }
        }else{
          /*
	   * The Samsung N120, N130, and NC10 use pci device id 0x27ae, while the
	   * NP-Q45 uses 0x2a02.  Odds are we might need to add more to the
	   * list over time...
	   */
          int pcidevids[]={0x27ae,0x2a02,0x2a42,0xa011,0};
	  int i;
          for(i=0, pci_device=NULL;pcidevids[i]>0 && pci_device==NULL;++i)
	    pci_device = pci_get_device(PCI_VENDOR_ID_INTEL, pcidevids[i], NULL);
          if (!pci_device)
            return -ENODEV;
          parent=&pci_device->dev;
        }
 
        /* create a backlight device to talk to this one */
#if LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,34)
	backlight_device = backlight_device_register("samsung",
						     parent,
						     NULL, &backlight_ops,NULL);
#else
	backlight_device = backlight_device_register("samsung",
						     parent,
						     NULL, &backlight_ops);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	 * (will be overridden if DMI quirk is detected)
	 */
	if (is_valleyview()) {
		if (mach->mach_params.acpi_ipc_irq_index == 0)
			is_bytcr = true;
	}

	if (is_bytcr) {
		/*
		 * Baytrail CR platforms may have CHAN package in BIOS, try
		 * to find relevant routing quirk based as done on Windows
		 * platforms. We have to read the information directly from the
		 * BIOS, at this stage the card is not created and the links
		 * with the codec driver/pdata are non-existent
		 */

		struct acpi_chan_package chan_package;

		/* format specified: 2 64-bit integers */
		struct acpi_buffer format = {sizeof("NN"), "NN"};
		struct acpi_buffer state = {0, NULL};
		struct snd_soc_acpi_package_context pkg_ctx;
		bool pkg_found = false;

		state.length = sizeof(chan_package);
		state.pointer = &chan_package;

		pkg_ctx.name = "CHAN";
		pkg_ctx.length = 2;
		pkg_ctx.format = &format;
		pkg_ctx.state = &state;
		pkg_ctx.data_valid = false;

		pkg_found = snd_soc_acpi_find_package_from_hid(mach->id,
							       &pkg_ctx);
		if (pkg_found) {
			if (chan_package.aif_value == 1) {
				dev_info(&pdev->dev, "BIOS Routing: AIF1 connected\n");
				cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF1;
			} else  if (chan_package.aif_value == 2) {
				dev_info(&pdev->dev, "BIOS Routing: AIF2 connected\n");
				cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF2;
			} else {
				dev_info(&pdev->dev, "BIOS Routing isn't valid, ignored\n");
				pkg_found = false;
			}
		}

		if (!pkg_found) {
			/* no BIOS indications, assume SSP0-AIF2 connection */
			cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF2;
		}
	}

	/* check quirks before creating card */
	dmi_check_system(cht_rt5645_quirk_table);
	log_quirks(&pdev->dev);

	if ((cht_rt5645_quirk & CHT_RT5645_SSP2_AIF2) ||
		(cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {

		/* fixup codec aif name */
		snprintf(cht_rt5645_codec_aif_name,
			sizeof(cht_rt5645_codec_aif_name),
			"%s", "rt5645-aif2");

		cht_dailink[dai_index].codec_dai_name =
			cht_rt5645_codec_aif_name;
	}

	if ((cht_rt5645_quirk & CHT_RT5645_SSP0_AIF1) ||
		(cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {

		/* fixup cpu dai name name */
		snprintf(cht_rt5645_cpu_dai_name,
			sizeof(cht_rt5645_cpu_dai_name),
			"%s", "ssp0-port");

		cht_dailink[dai_index].cpu_dai_name =
			cht_rt5645_cpu_dai_name;
	}

	drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
	if (IS_ERR(drv->mclk)) {
		dev_err(&pdev->dev,
			"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
			PTR_ERR(drv->mclk));
		return PTR_ERR(drv->mclk);
	}

	snd_soc_card_set_drvdata(card, drv);
	ret_val = devm_snd_soc_register_card(&pdev->dev, card);
	if (ret_val) {
		dev_err(&pdev->dev,
			"snd_soc_register_card failed %d\n", ret_val);
		return ret_val;
	}
	platform_set_drvdata(pdev, card);
	return ret_val;
}

void __init dmi_check_pciprobe(void)
{
	dmi_check_system(pciprobe_dmi_table);
}

static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
{
	unsigned int i;
	unsigned int valid_states = 0;
	unsigned int cpu = policy->cpu;
	struct acpi_cpufreq_data *data;
	unsigned int result = 0;
	struct cpuinfo_x86 *c = &cpu_data(policy->cpu);
	struct acpi_processor_performance *perf;
#ifdef CONFIG_SMP
	static int blacklisted;
#endif

	pr_debug("acpi_cpufreq_cpu_init\n");

#ifdef CONFIG_SMP
	if (blacklisted)
		return blacklisted;
	blacklisted = acpi_cpufreq_blacklist(c);
	if (blacklisted)
		return blacklisted;
#endif

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	if (!zalloc_cpumask_var(&data->freqdomain_cpus, GFP_KERNEL)) {
		result = -ENOMEM;
		goto err_free;
	}

	perf = per_cpu_ptr(acpi_perf_data, cpu);
	data->acpi_perf_cpu = cpu;
	policy->driver_data = data;

	if (cpu_has(c, X86_FEATURE_CONSTANT_TSC))
		acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;

	result = acpi_processor_register_performance(perf, cpu);
	if (result)
		goto err_free_mask;

	policy->shared_type = perf->shared_type;

	/*
	 * Will let policy->cpus know about dependency only when software
	 * coordination is required.
	 */
	if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL ||
	    policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) {
		cpumask_copy(policy->cpus, perf->shared_cpu_map);
	}
	cpumask_copy(data->freqdomain_cpus, perf->shared_cpu_map);

#ifdef CONFIG_SMP
	dmi_check_system(sw_any_bug_dmi_table);
	if (bios_with_sw_any_bug && !policy_is_shared(policy)) {
		policy->shared_type = CPUFREQ_SHARED_TYPE_ALL;
		cpumask_copy(policy->cpus, topology_core_cpumask(cpu));
	}

	if (check_amd_hwpstate_cpu(cpu) && !acpi_pstate_strict) {
		cpumask_clear(policy->cpus);
		cpumask_set_cpu(cpu, policy->cpus);
		cpumask_copy(data->freqdomain_cpus,
			     topology_sibling_cpumask(cpu));
		policy->shared_type = CPUFREQ_SHARED_TYPE_HW;
		pr_info_once(PFX "overriding BIOS provided _PSD data\n");
	}
#endif

	/* capability check */
	if (perf->state_count <= 1) {
		pr_debug("No P-States\n");
		result = -ENODEV;
		goto err_unreg;
	}

	if (perf->control_register.space_id != perf->status_register.space_id) {
		result = -ENODEV;
		goto err_unreg;
	}

	switch (perf->control_register.space_id) {
	case ACPI_ADR_SPACE_SYSTEM_IO:
		if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
		    boot_cpu_data.x86 == 0xf) {
			pr_debug("AMD K8 systems must use native drivers.\n");
			result = -ENODEV;
			goto err_unreg;
		}
		pr_debug("SYSTEM IO addr space\n");
		data->cpu_feature = SYSTEM_IO_CAPABLE;
		break;
	case ACPI_ADR_SPACE_FIXED_HARDWARE:
		pr_debug("HARDWARE addr space\n");
		if (check_est_cpu(cpu)) {
			data->cpu_feature = SYSTEM_INTEL_MSR_CAPABLE;
			break;
//.........这里部分代码省略.........

/**
 * intel_parse_bios - find VBT and initialize settings from the BIOS
 * @dev: DRM device
 *
 * Loads the Video BIOS and checks that the VBT exists.  Sets scratch registers
 * to appropriate values.
 *
 * Returns 0 on success, nonzero on failure.
 */
bool
intel_parse_bios(struct drm_device *dev)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct pci_dev *pdev = dev->pdev;
	struct bdb_header *bdb = NULL;
	u8 __iomem *bios = NULL;

	init_vbt_defaults(dev_priv);

	/* XXX Should this validation be moved to intel_opregion.c? */
	if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) {
		struct vbt_header *vbt = dev_priv->opregion.vbt;
		if (memcmp(vbt->signature, "$VBT", 4) == 0) {
			DRM_DEBUG_KMS("Using VBT from OpRegion: %20s\n",
					 vbt->signature);
			bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset);
		} else
			dev_priv->opregion.vbt = NULL;
	}

	if (bdb == NULL) {
		struct vbt_header *vbt = NULL;
		size_t size;
		int i;

		bios = pci_map_rom(pdev, &size);
		if (!bios)
			return -1;

		/* Scour memory looking for the VBT signature */
		for (i = 0; i + 4 < size; i++) {
			if (!memcmp(bios + i, "$VBT", 4)) {
				vbt = (struct vbt_header *)(bios + i);
				break;
			}
		}

		if (!vbt) {
			DRM_ERROR("VBT signature missing\n");
			pci_unmap_rom(pdev, bios);
			return -1;
		}

		bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset);
	}

	/* Grab useful general definitions */
	parse_general_features(dev_priv, bdb);
	parse_general_definitions(dev_priv, bdb);
	parse_lfp_panel_data(dev_priv, bdb);
	parse_sdvo_panel_data(dev_priv, bdb);
	parse_sdvo_device_mapping(dev_priv, bdb);
	parse_device_mapping(dev_priv, bdb);
	parse_driver_features(dev_priv, bdb);
	parse_edp(dev_priv, bdb);

	if (bios)
		pci_unmap_rom(pdev, bios);

	return 0;
}

static int __init msi_init(void)
{
	int ret;

	if (acpi_disabled)
		return -ENODEV;

	if (!force && !dmi_check_system(msi_dmi_table))
		return -ENODEV;

	if (auto_brightness < 0 || auto_brightness > 2)
		return -EINVAL;

	/* Register backlight stuff */

	msibl_device = backlight_device_register("msi-laptop-bl", NULL, NULL,
						&msibl_ops);
	if (IS_ERR(msibl_device))
		return PTR_ERR(msibl_device);

	msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1,

	ret = platform_driver_register(&msipf_driver);
	if (ret)
		goto fail_backlight;

	/* Register platform stuff */

	msipf_device = platform_device_alloc("msi-laptop-pf", -1);
	if (!msipf_device) {
		ret = -ENOMEM;
		goto fail_platform_driver;
	}

	ret = platform_device_add(msipf_device);
	if (ret)
		goto fail_platform_device1;

	ret = sysfs_create_group(&msipf_device->dev.kobj, &msipf_attribute_group);
	if (ret)
		goto fail_platform_device2;

	/* Disable automatic brightness control by default because
	 * this module was probably loaded to do brightness control in
	 * software. */

	if (auto_brightness != 2)
		set_auto_brightness(auto_brightness);

	printk(KERN_INFO "msi-laptop: driver "MSI_DRIVER_VERSION" successfully loaded.\n");

	return 0;

fail_platform_device2:

	platform_device_del(msipf_device);

fail_platform_device1:

	platform_device_put(msipf_device);

fail_platform_driver:

	platform_driver_unregister(&msipf_driver);

fail_backlight:

	backlight_device_unregister(msibl_device);

	return ret;
}

static int __init nvidiabl_init(void)
#endif
{
	int err; 
        unsigned back;
        s64 calc;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34)
        struct backlight_properties props;
#endif
        
	/* Bail-out if PCI subsystem is not initialized */
	if (no_pci_devices())
		return -ENODEV;

	printk(KERN_INFO "nvidiabl: loading driver version " NVIDIABL_VERSION_STR "\n");
	
	/* Check DMI whether we need to ignore some device */
	dmi_check_system(nvidiabl_ignore_table);
        
        /* Check DMI whether we have a known system */
        dmi_check_system(nvidiabl_dmi_table);

        err = nvidiabl_find_device(&driver_data, pci_id, nvidiabl_ignore_device);
        if (err)
                return err;
        
        nvidiabl_force_model(&driver_data);
        
        /* Map smartdimmer */
	err = nvidiabl_map_smartdimmer(driver_data);
	if (err)
		return err;
        
	/* Register at backlight framework */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34)
        memset(&props, 0, sizeof(struct backlight_properties));
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
	{
		char *p, *q;
		props.type = BACKLIGHT_TYPE_MAX-1;
		/* if the parameter string doesn't match type will = 1 a.k.a. BACKLIGHT_RAW */
		for (p = bl_type, q = (char *)bl_types[props.type]; props.type >= 1; props.type--)
			while (*p++ == *q++)
				if (*p == 0 && *q == 0)
					goto props;
	}
	props:
#endif
	nvidiabl_device = backlight_device_register("nvidia_backlight", NULL,
	                                             driver_data,
	                                             &driver_data->backlight_ops,
	                                             &props);
#else
        nvidiabl_device = backlight_device_register("nvidia_backlight", NULL,
                                                     driver_data,
                                                     &driver_data->backlight_ops);
#endif
                                                     
	if (IS_ERR(nvidiabl_device)) {
		nvidiabl_unmap_smartdimmer(driver_data);
		return PTR_ERR(nvidiabl_device);
	}


        back = driver_data->backup(driver_data);
        printk(KERN_INFO "nvidiabl: backup register value 0x%x\n", back);

        if (max == NVIDIABL_UNSET)
                driver_data->max = NVIDIABL_AUTO;
        else if (max != NVIDIABL_DEFAULT)
                driver_data->max = max;
          
        if (driver_data->max == NVIDIABL_AUTO) {
                printk(KERN_INFO "nvidiabl: autodetecting maximum\n");
                driver_data->max = driver_data->autodetect(driver_data, T_NVIDIABL_MAX);
        }
        printk(KERN_INFO "nvidiabl: using value 0x%x as maximum\n", driver_data->max);

        
        if (off == NVIDIABL_UNSET)
                driver_data->off = NVIDIABL_AUTO;
        else if (off != NVIDIABL_DEFAULT)
                driver_data->off = off;

        if (driver_data->off == NVIDIABL_AUTO) {
                printk(KERN_INFO "nvidiabl: autodetecting off\n");
                driver_data->off = driver_data->autodetect(driver_data, T_NVIDIABL_OFF);
        }
        
        if (driver_data->off < 0) {
                printk(KERN_INFO "nvidiabl: off is %d%% of maximum\n", -1 * driver_data->off);
                calc = driver_data->max * (-1 * driver_data->off);
                do_div(calc, 100);
                driver_data->off = calc;
        }
        printk(KERN_INFO "nvidiabl: using value 0x%x as off\n", driver_data->off);


        if (min == NVIDIABL_UNSET)
                driver_data->min = NVIDIABL_AUTO;
//.........这里部分代码省略.........

static void ide_gd_shutdown(ide_drive_t *drive)
{
#ifdef	CONFIG_ALPHA
    /* On Alpha, halt(8) doesn't actually turn the machine off,
       it puts you into the sort of firmware monitor. Typically,
       it's used to boot another kernel image, so it's not much
       different from reboot(8). Therefore, we don't need to
       spin down the disk in this case, especially since Alpha
       firmware doesn't handle disks in standby mode properly.
       On the other hand, it's reasonably safe to turn the power
       off when the shutdown process reaches the firmware prompt,
       as the firmware initialization takes rather long time -
       at least 10 seconds, which should be sufficient for
       the disk to expire its write cache. */
    if (system_state != SYSTEM_POWER_OFF) {
#else
    if (system_state == SYSTEM_RESTART &&
            !dmi_check_system(ide_coldreboot_table)) {
#endif
        drive->disk_ops->flush(drive);
        return;
    }

    ;

    drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND);
}

#ifdef CONFIG_IDE_PROC_FS
static ide_proc_entry_t *ide_disk_proc_entries(ide_drive_t *drive)
{
    return (drive->media == ide_disk) ? ide_disk_proc : ide_floppy_proc;
}

static const struct ide_proc_devset *ide_disk_proc_devsets(ide_drive_t *drive)
{
    return (drive->media == ide_disk) ? ide_disk_settings
           : ide_floppy_settings;
}
#endif

static ide_startstop_t ide_gd_do_request(ide_drive_t *drive,
        struct request *rq, sector_t sector)
{
    return drive->disk_ops->do_request(drive, rq, sector);
}

static struct ide_driver ide_gd_driver = {
    .gen_driver = {
        .owner		= THIS_MODULE,
        .name		= "ide-gd",
        .bus		= &ide_bus_type,
    },
    .probe			= ide_gd_probe,
    .remove			= ide_gd_remove,
    .resume			= ide_gd_resume,
    .shutdown		= ide_gd_shutdown,
    .version		= IDE_GD_VERSION,
    .do_request		= ide_gd_do_request,
#ifdef CONFIG_IDE_PROC_FS
    .proc_entries		= ide_disk_proc_entries,
    .proc_devsets		= ide_disk_proc_devsets,
#endif
};

static int __init acpisleep_dmi_init(void)
{
	dmi_check_system(acpisleep_dmi_table);
	return 0;
}

static int __init msi_init(void)
{
	int ret;

	if (acpi_disabled)
		return -ENODEV;

	dmi_check_system(msi_dmi_table);
	if (!quirks)
		/* quirks may be NULL if no match in DMI table */
		quirks = &quirk_load_scm_model;
	if (force)
		quirks = &quirk_old_ec_model;

	if (!quirks->old_ec_model)
		get_threeg_exists();

	if (auto_brightness < 0 || auto_brightness > 2)
		return -EINVAL;

	/* Register backlight stuff */

	if (!quirks->old_ec_model || acpi_video_backlight_support()) {
		pr_info("Brightness ignored, must be controlled by ACPI video driver\n");
	} else {
		struct backlight_properties props;
		memset(&props, 0, sizeof(struct backlight_properties));
		props.type = BACKLIGHT_PLATFORM;
		props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
		msibl_device = backlight_device_register("msi-laptop-bl", NULL,
							 NULL, &msibl_ops,
							 &props);
		if (IS_ERR(msibl_device))
			return PTR_ERR(msibl_device);
	}

	ret = platform_driver_register(&msipf_driver);
	if (ret)
		goto fail_backlight;

	/* Register platform stuff */

	msipf_device = platform_device_alloc("msi-laptop-pf", -1);
	if (!msipf_device) {
		ret = -ENOMEM;
		goto fail_platform_driver;
	}

	ret = platform_device_add(msipf_device);
	if (ret)
		goto fail_platform_device1;

	if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
		ret = -EINVAL;
		goto fail_platform_device1;
	}

	ret = sysfs_create_group(&msipf_device->dev.kobj,
				 &msipf_attribute_group);
	if (ret)
		goto fail_platform_device2;

	if (!quirks->old_ec_model) {
		if (threeg_exists)
			ret = device_create_file(&msipf_device->dev,
						&dev_attr_threeg);
		if (ret)
			goto fail_platform_device2;
	} else {
		ret = sysfs_create_group(&msipf_device->dev.kobj,
					 &msipf_old_attribute_group);
		if (ret)
			goto fail_platform_device2;

		/* Disable automatic brightness control by default because
		 * this module was probably loaded to do brightness control in
		 * software. */

		if (auto_brightness != 2)
			set_auto_brightness(auto_brightness);
	}

	pr_info("driver " MSI_DRIVER_VERSION " successfully loaded\n");

	return 0;

fail_platform_device2:

	if (quirks->load_scm_model) {
		i8042_remove_filter(msi_laptop_i8042_filter);
		cancel_delayed_work_sync(&msi_rfkill_dwork);
		cancel_work_sync(&msi_rfkill_work);
		rfkill_cleanup();
	}
	platform_device_del(msipf_device);

fail_platform_device1:

	platform_device_put(msipf_device);

//.........这里部分代码省略.........

static int __init ibm_rtl_init(void) {
	unsigned long ebda_addr, ebda_size;
	unsigned int ebda_kb;
	int ret = -ENODEV, i;

	if (force)
		pr_warn("module loaded by force\n");
	/* first ensure that we are running on IBM HW */
	else if (efi_enabled || !dmi_check_system(ibm_rtl_dmi_table))
		return -ENODEV;

	/* Get the address for the Extended BIOS Data Area */
	ebda_addr = get_bios_ebda();
	if (!ebda_addr) {
		RTL_DEBUG("no BIOS EBDA found\n");
		return -ENODEV;
	}

	ebda_map = ioremap(ebda_addr, 4);
	if (!ebda_map)
		return -ENOMEM;

	/* First word in the EDBA is the Size in KB */
	ebda_kb = ioread16(ebda_map);
	RTL_DEBUG("EBDA is %d kB\n", ebda_kb);

	if (ebda_kb == 0)
		goto out;

	iounmap(ebda_map);
	ebda_size = ebda_kb*1024;

	/* Remap the whole table */
	ebda_map = ioremap(ebda_addr, ebda_size);
	if (!ebda_map)
		return -ENOMEM;

	/* search for the _RTL_ signature at the start of the table */
	for (i = 0 ; i < ebda_size/sizeof(unsigned int); i++) {
		struct ibm_rtl_table __iomem * tmp;
		tmp = (struct ibm_rtl_table __iomem *) (ebda_map+i);
		if ((readq(&tmp->signature) & RTL_MASK) == RTL_SIGNATURE) {
			phys_addr_t addr;
			unsigned int plen;
			RTL_DEBUG("found RTL_SIGNATURE at %p\n", tmp);
			rtl_table = tmp;
			/* The address, value, width and offset are platform
			 * dependent and found in the ibm_rtl_table */
			rtl_cmd_width = ioread8(&rtl_table->cmd_granularity);
			rtl_cmd_type = ioread8(&rtl_table->cmd_address_type);
			RTL_DEBUG("rtl_cmd_width = %u, rtl_cmd_type = %u\n",
				  rtl_cmd_width, rtl_cmd_type);
			addr = ioread32(&rtl_table->cmd_port_address);
			RTL_DEBUG("addr = %#llx\n", (unsigned long long)addr);
			plen = rtl_cmd_width/sizeof(char);
			rtl_cmd_addr = rtl_port_map(addr, plen);
			RTL_DEBUG("rtl_cmd_addr = %p\n", rtl_cmd_addr);
			if (!rtl_cmd_addr) {
				ret = -ENOMEM;
				break;
			}
			ret = rtl_setup_sysfs();
			break;
		}
	}

out:
	if (ret) {
		iounmap(ebda_map);
		rtl_port_unmap(rtl_cmd_addr);
	}

	return ret;
}

static int __init hdaps_init(void)
{
	int ret;

	/* Determine axis orientation orientation */
	if (hdaps_invert == HDAPS_ORIENT_UNDEFINED) /* set by module param? */
		if (dmi_check_system(hdaps_whitelist) < 1) /* in whitelist? */
			hdaps_invert = 0; /* default */

	/* Init timer before platform_driver_register, in case of suspend */
	init_timer(&hdaps_timer);
	hdaps_timer.function = hdaps_mousedev_poll;
	ret = platform_driver_register(&hdaps_driver);
	if (ret)
		goto out;

	pdev = platform_device_register_simple("hdaps", -1, NULL, 0);
	if (IS_ERR(pdev)) {
		ret = PTR_ERR(pdev);
		goto out_driver;
	}

	ret = sysfs_create_group(&pdev->dev.kobj, &hdaps_attribute_group);
	if (ret)
		goto out_device;

	hdaps_idev = input_allocate_device();
	if (!hdaps_idev) {
		ret = -ENOMEM;
		goto out_group;
	}

	hdaps_idev_raw = input_allocate_device();
	if (!hdaps_idev_raw) {
		ret = -ENOMEM;
		goto out_idev_first;
	}

	/* calibration for the input device (deferred to avoid delay) */
	needs_calibration = 1;

	/* initialize the joystick-like fuzzed input device */
	hdaps_idev->name = "ThinkPad HDAPS joystick emulation";
	hdaps_idev->phys = "hdaps/input0";
	hdaps_idev->id.bustype = BUS_HOST;
	hdaps_idev->id.vendor  = HDAPS_INPUT_VENDOR;
	hdaps_idev->id.product = HDAPS_INPUT_PRODUCT;
	hdaps_idev->id.version = HDAPS_INPUT_JS_VERSION;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
	hdaps_idev->cdev.dev = &pdev->dev;
#endif
	hdaps_idev->evbit[0] = BIT(EV_ABS);
	hdaps_idev->open = hdaps_mousedev_open;
	hdaps_idev->close = hdaps_mousedev_close;
	input_set_abs_params(hdaps_idev, ABS_X,
			-256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
	input_set_abs_params(hdaps_idev, ABS_Y,
			-256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);

	ret = input_register_device(hdaps_idev);
	if (ret)
		goto out_idev;

	/* initialize the raw data input device */
	hdaps_idev_raw->name = "ThinkPad HDAPS accelerometer data";
	hdaps_idev_raw->phys = "hdaps/input1";
	hdaps_idev_raw->id.bustype = BUS_HOST;
	hdaps_idev_raw->id.vendor  = HDAPS_INPUT_VENDOR;
	hdaps_idev_raw->id.product = HDAPS_INPUT_PRODUCT;
	hdaps_idev_raw->id.version = HDAPS_INPUT_RAW_VERSION;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
	hdaps_idev_raw->cdev.dev = &pdev->dev;
#endif
	hdaps_idev_raw->evbit[0] = BIT(EV_ABS);
	hdaps_idev_raw->open = hdaps_mousedev_open;
	hdaps_idev_raw->close = hdaps_mousedev_close;
	input_set_abs_params(hdaps_idev_raw, ABS_X, -32768, 32767, 0, 0);
	input_set_abs_params(hdaps_idev_raw, ABS_Y, -32768, 32767, 0, 0);

	ret = input_register_device(hdaps_idev_raw);
	if (ret)
		goto out_idev_reg_first;

	pr_info("driver successfully loaded.\n");
	return 0;

out_idev_reg_first:
	input_unregister_device(hdaps_idev);
out_idev:
	input_free_device(hdaps_idev_raw);
out_idev_first:
	input_free_device(hdaps_idev);
out_group:
	sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
out_device:
	platform_device_unregister(pdev);
out_driver:
	platform_driver_unregister(&hdaps_driver);
	hdaps_device_shutdown();
out:
//.........这里部分代码省略.........

static int __init msi_init(void)
{
	int ret;

	if (acpi_disabled)
		return -ENODEV;

	if (force || dmi_check_system(msi_dmi_table))
		old_ec_model = 1;

	if (!old_ec_model)
		get_threeg_exists();

	if (!old_ec_model && dmi_check_system(msi_load_scm_models_dmi_table))
		load_scm_model = 1;

	if (auto_brightness < 0 || auto_brightness > 2)
		return -EINVAL;

	/* Register backlight stuff */

	if (acpi_video_backlight_support()) {
		printk(KERN_INFO "MSI: Brightness ignored, must be controlled "
		       "by ACPI video driver\n");
	} else {
		struct backlight_properties props;
		memset(&props, 0, sizeof(struct backlight_properties));
		props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
		msibl_device = backlight_device_register("msi-laptop-bl", NULL,
							 NULL, &msibl_ops,
							 &props);
		if (IS_ERR(msibl_device))
			return PTR_ERR(msibl_device);
	}

	ret = platform_driver_register(&msipf_driver);
	if (ret)
		goto fail_backlight;

	/* Register platform stuff */

	msipf_device = platform_device_alloc("msi-laptop-pf", -1);
	if (!msipf_device) {
		ret = -ENOMEM;
		goto fail_platform_driver;
	}

	ret = platform_device_add(msipf_device);
	if (ret)
		goto fail_platform_device1;

	if (load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
		ret = -EINVAL;
		goto fail_platform_device1;
	}

	ret = sysfs_create_group(&msipf_device->dev.kobj, &msipf_attribute_group);
	if (ret)
		goto fail_platform_device2;

	if (!old_ec_model) {
		if (threeg_exists)
			ret = device_create_file(&msipf_device->dev,
						&dev_attr_threeg);
		if (ret)
			goto fail_platform_device2;
	}

	/* Disable automatic brightness control by default because
	 * this module was probably loaded to do brightness control in
	 * software. */

	if (auto_brightness != 2)
		set_auto_brightness(auto_brightness);

	printk(KERN_INFO "msi-laptop: driver "MSI_DRIVER_VERSION" successfully loaded.\n");

	return 0;

fail_platform_device2:

	platform_device_del(msipf_device);

fail_platform_device1:

	platform_device_put(msipf_device);

fail_platform_driver:

	platform_driver_unregister(&msipf_driver);

fail_backlight:

	backlight_device_unregister(msibl_device);

	return ret;
}

static int __init ioport_quirks_init(void)
{
    dmi_check_system(ioport_quirks_tbl);
    return 0;
}

void __init io_delay_init(void)
{
	if (!io_delay_override)
		dmi_check_system(io_delay_0xed_port_dmi_table);
}