C++ BIT_MASK函數代碼示例

void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER);
}

static int ucb1400_ts_probe(struct platform_device *dev)
{
	int error, x_res, y_res;
	u16 fcsr;
	struct ucb1400_ts *ucb = dev->dev.platform_data;

	ucb->ts_idev = input_allocate_device();
	if (!ucb->ts_idev) {
		error = -ENOMEM;
		goto err;
	}

	/* Only in case the IRQ line wasn't supplied, try detecting it */
	if (ucb->irq < 0) {
		error = ucb1400_ts_detect_irq(ucb);
		if (error) {
			printk(KERN_ERR "UCB1400: IRQ probe failed\n");
			goto err_free_devs;
		}
	}

	init_waitqueue_head(&ucb->ts_wait);

	error = request_irq(ucb->irq, ucb1400_hard_irq, IRQF_TRIGGER_RISING,
				"UCB1400", ucb);
	if (error) {
		printk(KERN_ERR "ucb1400: unable to grab irq%d: %d\n",
				ucb->irq, error);
		goto err_free_devs;
	}
	printk(KERN_DEBUG "UCB1400: found IRQ %d\n", ucb->irq);

	input_set_drvdata(ucb->ts_idev, ucb);

	ucb->ts_idev->dev.parent	= &dev->dev;
	ucb->ts_idev->name		= "UCB1400 touchscreen interface";
	ucb->ts_idev->id.vendor		= ucb1400_reg_read(ucb->ac97,
						AC97_VENDOR_ID1);
	ucb->ts_idev->id.product	= ucb->id;
	ucb->ts_idev->open		= ucb1400_ts_open;
	ucb->ts_idev->close		= ucb1400_ts_close;
	ucb->ts_idev->evbit[0]		= BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
	ucb->ts_idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);

	/*
	 * Enable ADC filter to prevent horrible jitter on Colibri.
	 * This also further reduces jitter on boards where ADCSYNC
	 * pin is connected.
	 */
	fcsr = ucb1400_reg_read(ucb->ac97, UCB_FCSR);
	ucb1400_reg_write(ucb->ac97, UCB_FCSR, fcsr | UCB_FCSR_AVE);

	ucb1400_adc_enable(ucb->ac97);
	x_res = ucb1400_ts_read_xres(ucb);
	y_res = ucb1400_ts_read_yres(ucb);
	ucb1400_adc_disable(ucb->ac97);
	printk(KERN_DEBUG "UCB1400: x/y = %d/%d\n", x_res, y_res);

	input_set_abs_params(ucb->ts_idev, ABS_X, 0, x_res, 0, 0);
	input_set_abs_params(ucb->ts_idev, ABS_Y, 0, y_res, 0, 0);
	input_set_abs_params(ucb->ts_idev, ABS_PRESSURE, 0, 0, 0, 0);

	error = input_register_device(ucb->ts_idev);
	if (error)
		goto err_free_irq;

	return 0;

err_free_irq:
	free_irq(ucb->irq, ucb);
err_free_devs:
	input_free_device(ucb->ts_idev);
err:
	return error;

}

static int __devinit gpio_keys_probe(struct platform_device *pdev)
{
	const struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
	struct gpio_keys_drvdata *ddata;
	struct gpio_keys_button *button = NULL;
	struct gpio_button_data *bdata = NULL;
	struct device *dev = &pdev->dev;
	struct gpio_keys_platform_data alt_pdata;
	struct input_dev *input;
	int i, error;
	int wakeup = 0;
	int ret;
	struct device *sec_key;
#ifdef CONFIG_SEC_PATEK_PROJECT
	struct device *sec_keypad;
	struct device *sec_flip;
#endif

	if (!pdata) {
		error = gpio_keys_get_devtree_pdata(dev, &alt_pdata);
		if (error)
			return error;
		pdata = &alt_pdata;
	}

	ddata = kzalloc(sizeof(struct gpio_keys_drvdata) +
			pdata->nbuttons * sizeof(struct gpio_button_data),
			GFP_KERNEL);
	input = input_allocate_device();
	if (!ddata || !input) {
		dev_err(dev, "failed to allocate state\n");
		error = -ENOMEM;
		goto fail1;
	}

	ddata->input = input;
	ddata->n_buttons = pdata->nbuttons;
	ddata->enable = pdata->enable;
	ddata->disable = pdata->disable;
#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
	ddata->debounce_set = pdata->debounce_set;
#endif
#ifdef CONFIG_SENSORS_HALL

#if defined (CONFIG_SEC_MILLET_PROJECT) || defined (CONFIG_SEC_BERLUTI_PROJECT)\
	|| defined (CONFIG_SEC_MATISSE_PROJECT)	|| defined (CONFIG_SEC_ATLANTIC_PROJECT)\
    || defined (CONFIG_SEC_MEGA2_PROJECT) || defined (CONFIG_SEC_T8_PROJECT) || defined (CONFIG_SEC_T10_PROJECT) || defined(CONFIG_SEC_HESTIA_PROJECT)
	ret = gpio_request(pdata->gpio_flip_cover,"HALL");
	if(ret)
		printk(KERN_CRIT "[HALL IC] gpio Request FAIL\n");
	else {
		gpio_tlmm_config(GPIO_CFG(pdata->gpio_flip_cover,0, GPIO_CFG_INPUT, GPIO_CFG_NO_PULL,GPIO_CFG_2MA),GPIO_CFG_DISABLE);
	}
#endif
	ddata->gpio_flip_cover = pdata->gpio_flip_cover;
	ddata->flip_code = pdata->flip_code;
	ddata->irq_flip_cover = gpio_to_irq(ddata->gpio_flip_cover);
	wake_lock_init(&ddata->flip_wake_lock, WAKE_LOCK_SUSPEND,
		"flip_wake_lock");
	flip_status_before = -1;
#endif
	mutex_init(&ddata->disable_lock);
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	mutex_init(&ddata->irq_lock);
#endif

	platform_set_drvdata(pdev, ddata);
	input_set_drvdata(input, ddata);

	input->name = pdata->name ? : pdev->name;
	input->phys = "gpio-keys/input0";
	input->dev.parent = &pdev->dev;
#ifdef CONFIG_SENSORS_HALL
	if(ddata->gpio_flip_cover != 0) {
		input->evbit[0] |= BIT_MASK(EV_SW);
		input_set_capability(input, EV_SW, ddata->flip_code);
	}
#endif
#ifdef CONFIG_SENSORS_HALL_IRQ_CTRL
	ddata->gsm_area = false;
	ddata->cover_state = false;
	ddata->workaround_set = pdata->workaround_set;
	drv_data = ddata;
#endif
#ifdef CONFIG_SENSORS_HALL_DEBOUNCE
	ddata->debounce_set = false;
#endif
	input->open = gpio_keys_open;
	input->close = gpio_keys_close;

	input->id.bustype = BUS_HOST;
	input->id.vendor = 0x0001;
	input->id.product = 0x0001;
	input->id.version = 0x0100;

	/* Enable auto repeat feature of Linux input subsystem */
	if (pdata->rep)
		__set_bit(EV_REP, input->evbit);

	for (i = 0; i < pdata->nbuttons; i++) {
//.........這裏部分代碼省略.........

static int locomokbd_probe(struct locomo_dev *dev)
{
	struct locomokbd *locomokbd;
	struct input_dev *input_dev;
	int i, err;

	locomokbd = kzalloc(sizeof(struct locomokbd), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!locomokbd || !input_dev) {
		err = -ENOMEM;
		goto err_free_mem;
	}

	/* try and claim memory region */
	if (!request_mem_region((unsigned long) dev->mapbase,
				dev->length,
				LOCOMO_DRIVER_NAME(dev))) {
		err = -EBUSY;
		printk(KERN_ERR "locomokbd: Can't acquire access to io memory for keyboard\n");
		goto err_free_mem;
	}

	locomo_set_drvdata(dev, locomokbd);

	locomokbd->base = (unsigned long) dev->mapbase;

	spin_lock_init(&locomokbd->lock);

	init_timer(&locomokbd->timer);
	locomokbd->timer.function = locomokbd_timer_callback;
	locomokbd->timer.data = (unsigned long) locomokbd;

	locomokbd->suspend_jiffies = jiffies;

	locomokbd->input = input_dev;
	strcpy(locomokbd->phys, "locomokbd/input0");

	input_dev->name = "LoCoMo keyboard";
	input_dev->phys = locomokbd->phys;
	input_dev->id.bustype = BUS_HOST;
	input_dev->id.vendor = 0x0001;
	input_dev->id.product = 0x0001;
	input_dev->id.version = 0x0100;
	input_dev->open = locomokbd_open;
	input_dev->close = locomokbd_close;
	input_dev->dev.parent = &dev->dev;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
				BIT_MASK(EV_PWR);
	input_dev->keycode = locomokbd->keycode;
	input_dev->keycodesize = sizeof(locomokbd_keycode[0]);
	input_dev->keycodemax = ARRAY_SIZE(locomokbd_keycode);

	input_set_drvdata(input_dev, locomokbd);

	memcpy(locomokbd->keycode, locomokbd_keycode, sizeof(locomokbd->keycode));
	for (i = 0; i < LOCOMOKBD_NUMKEYS; i++)
		set_bit(locomokbd->keycode[i], input_dev->keybit);
	clear_bit(0, input_dev->keybit);

	/* attempt to get the interrupt */
	err = request_irq(dev->irq[0], locomokbd_interrupt, 0, "locomokbd", locomokbd);
	if (err) {
		printk(KERN_ERR "locomokbd: Can't get irq for keyboard\n");
		goto err_release_region;
	}

	err = input_register_device(locomokbd->input);
	if (err)
		goto err_free_irq;

	return 0;

 err_free_irq:
	free_irq(dev->irq[0], locomokbd);
 err_release_region:
	release_mem_region((unsigned long) dev->mapbase, dev->length);
	locomo_set_drvdata(dev, NULL);
 err_free_mem:
	input_free_device(input_dev);
	kfree(locomokbd);

	return err;
}

	return error;
}

static void cpuboost_input_disconnect(struct input_handle *handle)
{
	input_close_device(handle);
	input_unregister_handle(handle);
	kfree(handle);
}

static const struct input_device_id cpuboost_ids[] = {
	/* multi-touch touchscreen */
	{
		.flags = INPUT_DEVICE_ID_MATCH_EVBIT |
			INPUT_DEVICE_ID_MATCH_ABSBIT,
		.evbit = { BIT_MASK(EV_ABS) },
		.absbit = { [BIT_WORD(ABS_MT_POSITION_X)] =
			BIT_MASK(ABS_MT_POSITION_X) |
			BIT_MASK(ABS_MT_POSITION_Y) },
	},
	/* touchpad */
	{
		.flags = INPUT_DEVICE_ID_MATCH_KEYBIT |
			INPUT_DEVICE_ID_MATCH_ABSBIT,
		.keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) },
		.absbit = { [BIT_WORD(ABS_X)] =
			BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) },
	},
	/* Keypad */
	{
		.flags = INPUT_DEVICE_ID_MATCH_EVBIT,

static int __devinit pcap_ts_probe(struct platform_device *pdev)
{
	struct input_dev *input_dev;
	struct pcap_ts *pcap_ts;
	int err = -ENOMEM;

	pcap_ts = kzalloc(sizeof(*pcap_ts), GFP_KERNEL);
	if (!pcap_ts)
		return err;

	pcap_ts->pcap = dev_get_drvdata(pdev->dev.parent);
	platform_set_drvdata(pdev, pcap_ts);

	input_dev = input_allocate_device();
	if (!input_dev)
		goto fail;

	INIT_DELAYED_WORK(&pcap_ts->work, pcap_ts_work);

	pcap_ts->read_state = PCAP_ADC_TS_M_NONTS;
	pcap_set_ts_bits(pcap_ts->pcap,
				pcap_ts->read_state << PCAP_ADC_TS_M_SHIFT);

	pcap_ts->input = input_dev;
	input_set_drvdata(input_dev, pcap_ts);

	input_dev->name = "pcap-touchscreen";
	input_dev->phys = "pcap_ts/input0";
	input_dev->id.bustype = BUS_HOST;
	input_dev->id.vendor = 0x0001;
	input_dev->id.product = 0x0002;
	input_dev->id.version = 0x0100;
	input_dev->dev.parent = &pdev->dev;
	input_dev->open = pcap_ts_open;
	input_dev->close = pcap_ts_close;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
	input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
	input_set_abs_params(input_dev, ABS_X, X_AXIS_MIN, X_AXIS_MAX, 0, 0);
	input_set_abs_params(input_dev, ABS_Y, Y_AXIS_MIN, Y_AXIS_MAX, 0, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, PRESSURE_MIN,
			     PRESSURE_MAX, 0, 0);

	err = input_register_device(pcap_ts->input);
	if (err)
		goto fail_allocate;

	err = request_irq(pcap_to_irq(pcap_ts->pcap, PCAP_IRQ_TS),
			pcap_ts_event_touch, 0, "Touch Screen", pcap_ts);
	if (err)
		goto fail_register;

	return 0;

fail_register:
	input_unregister_device(input_dev);
	goto fail;
fail_allocate:
	input_free_device(input_dev);
fail:
	kfree(pcap_ts);

	return err;
}

static int __devinit w90p910_keypad_probe(struct platform_device *pdev)
{
	const struct w90p910_keypad_platform_data *pdata =
						pdev->dev.platform_data;
	const struct matrix_keymap_data *keymap_data;
	struct w90p910_keypad *keypad;
	struct input_dev *input_dev;
	struct resource *res;
	int irq;
	int error;

	if (!pdata) {
		dev_err(&pdev->dev, "no platform data defined\n");
		return -EINVAL;
	}

	keymap_data = pdata->keymap_data;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "failed to get keypad irq\n");
		return -ENXIO;
	}

	keypad = kzalloc(sizeof(struct w90p910_keypad), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!keypad || !input_dev) {
		dev_err(&pdev->dev, "failed to allocate driver data\n");
		error = -ENOMEM;
		goto failed_free;
	}

	keypad->pdata = pdata;
	keypad->input_dev = input_dev;
	keypad->irq = irq;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (res == NULL) {
		dev_err(&pdev->dev, "failed to get I/O memory\n");
		error = -ENXIO;
		goto failed_free;
	}

	res = request_mem_region(res->start, resource_size(res), pdev->name);
	if (res == NULL) {
		dev_err(&pdev->dev, "failed to request I/O memory\n");
		error = -EBUSY;
		goto failed_free;
	}

	keypad->mmio_base = ioremap(res->start, resource_size(res));
	if (keypad->mmio_base == NULL) {
		dev_err(&pdev->dev, "failed to remap I/O memory\n");
		error = -ENXIO;
		goto failed_free_res;
	}

	keypad->clk = clk_get(&pdev->dev, NULL);
	if (IS_ERR(keypad->clk)) {
		dev_err(&pdev->dev, "failed to get keypad clock\n");
		error = PTR_ERR(keypad->clk);
		goto failed_free_io;
	}

	/* set multi-function pin for w90p910 kpi. */
	mfp_set_groupi(&pdev->dev);

	input_dev->name = pdev->name;
	input_dev->id.bustype = BUS_HOST;
	input_dev->open = w90p910_keypad_open;
	input_dev->close = w90p910_keypad_close;
	input_dev->dev.parent = &pdev->dev;

	input_dev->keycode = keypad->keymap;
	input_dev->keycodesize = sizeof(keypad->keymap[0]);
	input_dev->keycodemax = ARRAY_SIZE(keypad->keymap);

	input_set_drvdata(input_dev, keypad);

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

	matrix_keypad_build_keymap(keymap_data, W90P910_ROW_SHIFT,
				   input_dev->keycode, input_dev->keybit);

	error = request_irq(keypad->irq, w90p910_keypad_irq_handler,
			    IRQF_DISABLED, pdev->name, keypad);
	if (error) {
		dev_err(&pdev->dev, "failed to request IRQ\n");
		goto failed_put_clk;
	}

	/* Register the input device */
	error = input_register_device(input_dev);
	if (error) {
		dev_err(&pdev->dev, "failed to register input device\n");
		goto failed_free_irq;
	}

	platform_set_drvdata(pdev, keypad);
//.........這裏部分代碼省略.........

static int __devinit HC548_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
    struct HC548_touchscreen_data *data;
    struct input_dev *input_dev;
    u8 buf,buf1;
    int error;
#ifdef ENABLE_UPGRADE
    int times = 0;
#endif

    pr_pos_info();

    data = kzalloc(sizeof(struct HC548_touchscreen_data), GFP_KERNEL);
    if(data == NULL)
    {
        pr_red_info("HC548 kzalloc touchscreen_data failed!\n");
        error = -ENOMEM;
        goto exit_alloc_data_failed;
    }

    input_dev = input_allocate_device();
    if(input_dev == NULL)
    {
        pr_red_info("HC548 input allocate device failed!\n");
        error = -ENOMEM;
        goto exit_input_dev_alloc_failed;
    }

    data->input_dev = input_dev;
    input_set_drvdata(input_dev, data);

    input_dev->name = HC5XX_NAME;
    input_dev->id.bustype = BUS_I2C;
    input_dev->dev.parent = &client->dev;
    input_dev->open = HC548_input_open;
    input_dev->close = HC548_input_close;

    input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) ;
//	input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
    input_dev->propbit[0] = BIT(INPUT_PROP_DIRECT);

    input_dev->absbit[0] =  BIT_MASK(ABS_MT_TRACKING_ID) |
                            BIT_MASK(ABS_MT_POSITION_X) | BIT_MASK(ABS_MT_POSITION_Y)|
                            BIT_MASK(ABS_MT_TOUCH_MAJOR);// | BIT_MASK(ABS_MT_WIDTH_MAJOR);

    input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, HC548_MAX_X, 0 , 0);
    input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, HC548_MAX_Y, 0 , 0);
    input_set_abs_params(input_dev,ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
//	input_set_abs_params(input_dev,ABS_MT_WIDTH_MAJOR, 0, 200, 0, 0);
    input_set_abs_params(input_dev, ABS_MT_TRACKING_ID, 0, 5, 0, 0);

#ifdef KEY_MAP_INIT
    HC548_key_map_init(input_dev);
#endif

    error = input_register_device(input_dev);
    if(error < 0)
    {
        pr_red_info("HC548 input_register_device failed!\n");
        goto err_unregister_device;
    }

    data->ts_wq = create_singlethread_workqueue("kworkqueue_ts");
    if (!data->ts_wq) {
        dev_err(&client->dev, "Could not create workqueue\n");
        goto error_wq_create;
    }
    flush_workqueue(data->ts_wq);

    INIT_WORK(&data->work, HC548_poscheck);
    data->client = client;
    i2c_set_clientdata(client,data);
    this_client = client;

    /*  configure rest pin */
#if 0
    data->reset = RK30_PIN0_PB6;//RK2928_PIN1_PB1; //INVALID_GPIO;//S5PV210_GPH2(5);
    if (data->reset != INVALID_GPIO) {
        error = gpio_request(data->reset, NULL);
        if (error < 0) {
            pr_red_info("Unable to request GPIO pin %d to act as reset\n",data->reset);
            goto exit_rst_gpio_request_failed;
        }
    }
    HC548_hard_reset(data);
#endif

    hc_register_read(0x00, &buf, 1);
    if(buf == 0x86)
        pr_green_info("HC548: I2C communication is OK, TP chip ID is %x\n",buf);
    else
        pr_red_info("HC548: I2C ERROR!! TP chip ID is %x\n",buf);

#ifdef ENABLE_UPGRADE
    pr_green_info("HC548: HC548_fw_data[0] is %x\n",HC548_fw_data[0]);
    if(HC548_fw_data[0] == 0xff)   //debug_control,if data is 0xff,TP drive always upgrade
    {
        while(1)
        {
            int ret = 0;
//.........這裏部分代碼省略.........

static int __init bt_init(void)
{

	int error1,error2;
	int i;	
	
	btmouse_dev = input_allocate_device();
	//btmouse_dev->dev = btmouse_dev;
	btmouse_dev->id.bustype = BUS_USB;
	btmouse_dev->name = BT_MOUSE_NAME;   

	btmouse_dev->phys = "usb-0000:01:0d.1-1/input0";
	btmouse_dev->id.vendor = 0x0001;
	btmouse_dev->id.product = 0x0002;
	btmouse_dev->id.version = 0x0001;

	
	btmouse_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL) |BIT(EV_SYN) |BIT(EV_MSC);
	btmouse_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y) |BIT(REL_RX) | BIT(REL_RY) | BIT(REL_RZ);
	btmouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT)|BIT_MASK(MSC_SCAN);	
	/*set_bit(EV_KEY,btmouse_dev->evbit);
	set_bit(EV_REL,btmouse_dev->evbit);	
	set_bit(EV_SYN,btmouse_dev->evbit);
	set_bit(REL_X,btmouse_dev->relbit);
	set_bit(REL_Y,btmouse_dev->relbit);
	set_bit(BTN_LEFT,btmouse_dev->keybit);*/

	btmouse_dev->open = btmouse_open;
	btmouse_dev->close = btmouse_close;
	
	error1 = input_register_device(btmouse_dev);
	if (error1) { 
		printk("bt_mouse: Failed to register device\n");
		goto err_free_dev1; 
	}

	btkb_dev = input_allocate_device();
	btkb_dev->id.bustype = BUS_USB;
	btkb_dev->name = BT_KB_NAME;   

	btkb_dev->phys = "usb-0000:01:0d.1-1/input0";
	btkb_dev->id.vendor = 0x0001;
	btkb_dev->id.product = 0x0002;
	btkb_dev->id.version = 0x0001;


	btkb_dev->evbit[0] = BIT(EV_KEY) ;
	for (i = 0; i < 0xF6; i++)
		set_bit(i, btkb_dev->keybit);


	btkb_dev->open = btkb_open;
	btkb_dev->close = btkb_close;
	
	error2 = input_register_device(btkb_dev);
	if (error2) { 
		printk("bt_keyboard: Failed to register device\n");
		goto err_free_dev2; 
	}


	return 0;
err_free_dev1:
	input_free_device(btmouse_dev);
	return error1;

err_free_dev2:
	input_free_device(btkb_dev);
	return error2;

}

static int nxp_key_probe(struct platform_device *pdev)
{
    struct nxp_key_plat_data * plat = pdev->dev.platform_data;
    struct key_info *key = NULL;
    struct key_code *code = NULL;
    struct input_dev *input = NULL;
    int i, keys;
    int ret = 0;

    pr_debug("%s (device name:%s, id:%d)\n", __func__, pdev->name, pdev->id);

    key = kzalloc(sizeof(struct key_info), GFP_KERNEL);
    if (! key) {
        pr_err("fail, %s allocate driver info ...\n", pdev->name);
        return -ENOMEM;
    }

    keys = plat->bt_count;
    code = kzalloc(sizeof(struct key_code)*keys, GFP_KERNEL);
    if (NULL == code) {
        pr_err("fail, %s allocate key code ...\n", pdev->name);
        ret = -ENOMEM;
        goto err_mm;
    }

    input = input_allocate_device();
    if (NULL == input) {
        pr_err("fail, %s allocate input device\n", pdev->name);
        ret = -ENOMEM;
        goto err_mm;
    }

    key->input = input;
    key->keys = keys;
    key->code = code;
    key->resume_delay_ms = plat->resume_delay_ms;
    key_input = key->input;

    INIT_DELAYED_WORK(&key->resume_work, nxp_key_resume_work);

    input->name	= "nxp-keypad";
    input->phys = "nexell/input0";
    input->id.bustype = BUS_HOST;
    input->id.vendor = 0x0001;
    input->id.product = 0x0002;
    input->id.version = 0x0100;
    input->dev.parent = &pdev->dev;
    input->keycode = plat->bt_code;
    input->keycodesize = sizeof(plat->bt_code[0]);
    input->keycodemax = plat->bt_count * 2;	// for long key
    input->evbit[0] = BIT_MASK(EV_KEY);

    if (plat->bt_repeat)
        input->evbit[0] |= BIT_MASK(EV_REP);

    input_set_capability(input, EV_MSC, MSC_SCAN);
    input_set_drvdata(input, key);

    ret = input_register_device(input);
    if (ret) {
        pr_err("fail, %s register for input device ...\n", pdev->name);
        goto err_mm;
    }

    for (i=0; keys > i; i++, code++) {
        code->io = plat->bt_io[i];
        code->keycode = plat->bt_code[i];
        code->detect_high = plat->bt_detect_high ? plat->bt_detect_high[i]: 0;
        code->val = i;
        code->info = key;
        code->keystat = KEY_STAT_RELEASE;

        code->kcode_wq = create_singlethread_workqueue(pdev->name);
        if (!code->kcode_wq) {
            ret = -ESRCH;
            goto err_irq;
        }

        ret = request_irq(gpio_to_irq(code->io), nxp_key_irqhnd,
                          (IRQF_SHARED | IRQ_TYPE_EDGE_BOTH), pdev->name, code);
        if (ret) {
            pr_err("fail, gpio[%d] %s request irq...\n", code->io, pdev->name);
            goto err_irq;
        }

        __set_bit(code->keycode, input->keybit);
        INIT_DELAYED_WORK(&code->kcode_work, nxp_key_event_wq);
        pr_debug("[%d] key io=%3d, code=%4d\n", i, code->io, code->keycode);
    }

    platform_set_drvdata(pdev, key);

    return ret;

err_irq:
    for (--i; i >= 0; i--) {
        cancel_work_sync(&code[i].kcode_work.work);
        destroy_workqueue(code[i].kcode_wq);
        free_irq(gpio_to_irq(code[i].io), &code[i]);
    }
//.........這裏部分代碼省略.........

//.........這裏部分代碼省略.........
		       IFORCE_EFFECTS_MAX, ff_effects);
		ff_effects = IFORCE_EFFECTS_MAX;
	}

/*
 * Display additional info.
 */

	for (i = 0; c[i]; i++)
		if (!iforce_get_id_packet(iforce, c + i))
			iforce_dump_packet(iforce, "info", iforce->ecmd, iforce->edata);

/*
 * Disable spring, enable force feedback.
 */
	iforce_set_autocenter(input_dev, 0);

/*
 * Find appropriate device entry
 */

	for (i = 0; iforce_device[i].idvendor; i++)
		if (iforce_device[i].idvendor == input_dev->id.vendor &&
		    iforce_device[i].idproduct == input_dev->id.product)
			break;

	iforce->type = iforce_device + i;
	input_dev->name = iforce->type->name;

/*
 * Set input device bitfields and ranges.
 */

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) |
		BIT_MASK(EV_FF_STATUS);

	for (i = 0; iforce->type->btn[i] >= 0; i++)
		set_bit(iforce->type->btn[i], input_dev->keybit);

	for (i = 0; iforce->type->abs[i] >= 0; i++) {

		signed short t = iforce->type->abs[i];

		switch (t) {

			case ABS_X:
			case ABS_Y:
			case ABS_WHEEL:

				input_set_abs_params(input_dev, t, -1920, 1920, 16, 128);
				set_bit(t, input_dev->ffbit);
				break;

			case ABS_THROTTLE:
			case ABS_GAS:
			case ABS_BRAKE:

				input_set_abs_params(input_dev, t, 0, 255, 0, 0);
				break;

			case ABS_RUDDER:

				input_set_abs_params(input_dev, t, -128, 127, 0, 0);
				break;

			case ABS_HAT0X:

static int w90x900ts_probe(struct platform_device *pdev)
{
	struct w90p910_ts *w90p910_ts;
	struct input_dev *input_dev;
	struct resource *res;
	int err;

	w90p910_ts = kzalloc(sizeof(struct w90p910_ts), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!w90p910_ts || !input_dev) {
		err = -ENOMEM;
		goto fail1;
	}

	w90p910_ts->input = input_dev;
	w90p910_ts->state = TS_IDLE;
	spin_lock_init(&w90p910_ts->lock);
	setup_timer(&w90p910_ts->timer, w90p910_check_pen_up,
		    (unsigned long)w90p910_ts);

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		err = -ENXIO;
		goto fail1;
	}

	if (!request_mem_region(res->start, resource_size(res),
				pdev->name)) {
		err = -EBUSY;
		goto fail1;
	}

	w90p910_ts->ts_reg = ioremap(res->start, resource_size(res));
	if (!w90p910_ts->ts_reg) {
		err = -ENOMEM;
		goto fail2;
	}

	w90p910_ts->clk = clk_get(&pdev->dev, NULL);
	if (IS_ERR(w90p910_ts->clk)) {
		err = PTR_ERR(w90p910_ts->clk);
		goto fail3;
	}

	input_dev->name = "W90P910 TouchScreen";
	input_dev->phys = "w90p910ts/event0";
	input_dev->id.bustype = BUS_HOST;
	input_dev->id.vendor  = 0x0005;
	input_dev->id.product = 0x0001;
	input_dev->id.version = 0x0100;
	input_dev->dev.parent = &pdev->dev;
	input_dev->open = w90p910_open;
	input_dev->close = w90p910_close;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
	input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);

	input_set_abs_params(input_dev, ABS_X, 0, 0x400, 0, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, 0x400, 0, 0);

	input_set_drvdata(input_dev, w90p910_ts);

	w90p910_ts->irq_num = platform_get_irq(pdev, 0);
	if (request_irq(w90p910_ts->irq_num, w90p910_ts_interrupt,
			0, "w90p910ts", w90p910_ts)) {
		err = -EBUSY;
		goto fail4;
	}

	err = input_register_device(w90p910_ts->input);
	if (err)
		goto fail5;

	platform_set_drvdata(pdev, w90p910_ts);

	return 0;

fail5:	free_irq(w90p910_ts->irq_num, w90p910_ts);
fail4:	clk_put(w90p910_ts->clk);
fail3:	iounmap(w90p910_ts->ts_reg);
fail2:	release_mem_region(res->start, resource_size(res));
fail1:	input_free_device(input_dev);
	kfree(w90p910_ts);
	return err;
}

int dvb_usb_remote_init(struct dvb_usb_device *d)
{
    struct input_dev *input_dev;
    int i;
    int err;

    if (d->props.rc_key_map == NULL ||
            d->props.rc_query == NULL ||
            dvb_usb_disable_rc_polling)
        return 0;

    usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys));
    strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys));

    input_dev = input_allocate_device();
    if (!input_dev)
        return -ENOMEM;

    input_dev->evbit[0] = BIT_MASK(EV_KEY);
    input_dev->name = "IR-receiver inside an USB DVB receiver";
    input_dev->phys = d->rc_phys;
    usb_to_input_id(d->udev, &input_dev->id);
    input_dev->dev.parent = &d->udev->dev;
    input_dev->getkeycode = dvb_usb_getkeycode;
    input_dev->setkeycode = dvb_usb_setkeycode;

    /* set the bits for the keys */
    deb_rc("key map size: %d\n", d->props.rc_key_map_size);
    for (i = 0; i < d->props.rc_key_map_size; i++) {
        deb_rc("setting bit for event %d item %d\n",
               d->props.rc_key_map[i].event, i);
        set_bit(d->props.rc_key_map[i].event, input_dev->keybit);
    }

    /* Start the remote-control polling. */
    if (d->props.rc_interval < 40)
        d->props.rc_interval = 100; /* default */

    /* setting these two values to non-zero, we have to manage key repeats */
    input_dev->rep[REP_PERIOD] = d->props.rc_interval;
    input_dev->rep[REP_DELAY]  = d->props.rc_interval + 150;

    input_set_drvdata(input_dev, d);

    err = input_register_device(input_dev);
    if (err) {
        input_free_device(input_dev);
        return err;
    }

    d->rc_input_dev = input_dev;

    INIT_DELAYED_WORK(&d->rc_query_work, dvb_usb_read_remote_control);

    info("schedule remote query interval to %d msecs.", d->props.rc_interval);
    schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));

    d->state |= DVB_USB_STATE_REMOTE;

    return 0;
}

static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_endpoint_descriptor *endpoint;
	struct wacom *wacom;
	struct wacom_wac *wacom_wac;
	struct wacom_features *features;
	struct input_dev *input_dev;
	int error;

	if (!id->driver_info)
		return -EINVAL;

	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
	wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!wacom || !input_dev || !wacom_wac) {
		error = -ENOMEM;
		goto fail1;
	}

	wacom_wac->features = *((struct wacom_features *)id->driver_info);
	features = &wacom_wac->features;
	if (features->pktlen > WACOM_PKGLEN_MAX) {
		error = -EINVAL;
		goto fail1;
	}

	wacom_wac->data = usb_buffer_alloc(dev, WACOM_PKGLEN_MAX,
					   GFP_KERNEL, &wacom->data_dma);
	if (!wacom_wac->data) {
		error = -ENOMEM;
		goto fail1;
	}

	wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!wacom->irq) {
		error = -ENOMEM;
		goto fail2;
	}

	wacom->usbdev = dev;
	wacom->dev = input_dev;
	wacom->intf = intf;
	mutex_init(&wacom->lock);
	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));

	usb_to_input_id(dev, &input_dev->id);

	input_dev->dev.parent = &intf->dev;

	input_set_drvdata(input_dev, wacom);

	input_dev->open = wacom_open;
	input_dev->close = wacom_close;

	endpoint = &intf->cur_altsetting->endpoint[0].desc;

	/* Retrieve the physical and logical size for OEM devices */
	error = wacom_retrieve_hid_descriptor(intf, features);
	if (error)
		goto fail2;

	strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));

	if (features->type == TABLETPC || features->type == TABLETPC2FG) {
		/* Append the device type to the name */
		strlcat(wacom_wac->name,
			features->device_type == BTN_TOOL_PEN ?
				" Pen" : " Finger",
			sizeof(wacom_wac->name));
	}

	input_dev->name = wacom_wac->name;
	wacom->wacom_wac = wacom_wac;

	input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOUCH);

	input_set_abs_params(input_dev, ABS_X, 0, features->x_max, 4, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0);
	input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);

	wacom_init_input_dev(input_dev, wacom_wac);

	usb_fill_int_urb(wacom->irq, dev,
			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
			 wacom_wac->data, features->pktlen,
			 wacom_sys_irq, wacom, endpoint->bInterval);
	wacom->irq->transfer_dma = wacom->data_dma;
	wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	error = input_register_device(wacom->dev);
	if (error)
		goto fail3;

	/* Note that if query fails it is not a hard failure */
	wacom_query_tablet_data(intf, features);
//.........這裏部分代碼省略.........

static int __init sun4ikbd_init(void)
{
	int i;
	int err =0;

#ifdef KEY_DEBUG
	printk("sun4ikbd_init \n");
#endif
	sun4ikbd_dev = input_allocate_device();
	if (!sun4ikbd_dev) {
		printk(KERN_ERR "sun4ikbd: not enough memory for input device\n");
		err = -ENOMEM;
		goto fail1;
	}

	sun4ikbd_dev->name = "sun4i-keyboard";
	sun4ikbd_dev->phys = "sun4ikbd/input0";
	sun4ikbd_dev->id.bustype = BUS_HOST;
	sun4ikbd_dev->id.vendor = 0x0001;
	sun4ikbd_dev->id.product = 0x0001;
	sun4ikbd_dev->id.version = 0x0100;

#ifdef REPORT_REPEAT_KEY_BY_INPUT_CORE
	sun4ikbd_dev->evbit[0] = BIT_MASK(EV_KEY)|BIT_MASK(EV_REP);
	printk("REPORT_REPEAT_KEY_BY_INPUT_CORE is defined, support report repeat key value. \n");
#else
	sun4ikbd_dev->evbit[0] = BIT_MASK(EV_KEY);
#endif

	for (i = 0; i < KEY_MAX_CNT; i++)
		set_bit(sun4i_scankeycodes[i], sun4ikbd_dev->keybit);

#ifdef ONE_CHANNEL
	writel(LRADC_ADC0_DOWN_EN|LRADC_ADC0_UP_EN|LRADC_ADC0_DATA_EN,KEY_BASSADDRESS + LRADC_INTC);
	writel(FIRST_CONCERT_DLY|LEVELB_VOL|KEY_MODE_SELECT|LRADC_HOLD_EN|ADC_CHAN_SELECT|LRADC_SAMPLE_62HZ|LRADC_EN,KEY_BASSADDRESS + LRADC_CTRL);
	//writel(FIRST_CONCERT_DLY|LEVELB_VOL|KEY_MODE_SELECT|ADC_CHAN_SELECT|LRADC_SAMPLE_62HZ|LRADC_EN,KEY_BASSADDRESS + LRADC_CTRL);

#else
#endif


	if (request_irq(SW_INT_IRQNO_LRADC, sun4i_isr_key, 0, "sun4ikbd", NULL)){
		err = -EBUSY;
		printk("request irq failure. \n");
		goto fail2;
	}

	err = input_register_device(sun4ikbd_dev);
	if (err)
		goto fail3;

#ifdef CONFIG_HAS_EARLYSUSPEND
	printk("==register_early_suspend =\n");
	keyboard_data = kzalloc(sizeof(*keyboard_data), GFP_KERNEL);
	if (keyboard_data == NULL) {
		err = -ENOMEM;
		goto err_alloc_data_failed;
	}

	keyboard_data->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 3;
	keyboard_data->early_suspend.suspend = sun4i_keyboard_suspend;
	keyboard_data->early_suspend.resume	= sun4i_keyboard_resume;
	register_early_suspend(&keyboard_data->early_suspend);
#endif

	return 0;
#ifdef CONFIG_HAS_EARLYSUSPEND
 err_alloc_data_failed:
#endif
 fail3:
	free_irq(SW_INT_IRQNO_LRADC, sun4i_isr_key);
 fail2:
	input_free_device(sun4ikbd_dev);
 fail1:
     ;
#ifdef KEY_DEBUG
	printk("sun4ikbd_init failed. \n");
#endif

 return err;
}