C++ devm_input_allocate_device函数代码示例

/**
 * Creates the kernel input device.
 *
 * Return: 0 on success, negated errno on failure.
 */
static int vbg_create_input_device(struct vbg_dev *gdev)
{
	struct input_dev *input;

	input = devm_input_allocate_device(gdev->dev);
	if (!input)
		return -ENOMEM;

	input->id.bustype = BUS_PCI;
	input->id.vendor = VBOX_VENDORID;
	input->id.product = VMMDEV_DEVICEID;
	input->open = vbg_input_open;
	input->close = vbg_input_close;
	input->dev.parent = gdev->dev;
	input->name = "VirtualBox mouse integration";

	input_set_abs_params(input, ABS_X, VMMDEV_MOUSE_RANGE_MIN,
			     VMMDEV_MOUSE_RANGE_MAX, 0, 0);
	input_set_abs_params(input, ABS_Y, VMMDEV_MOUSE_RANGE_MIN,
			     VMMDEV_MOUSE_RANGE_MAX, 0, 0);
	input_set_capability(input, EV_KEY, BTN_MOUSE);
	input_set_drvdata(input, gdev);

	gdev->input = input;

	return input_register_device(gdev->input);
}

/**
 * pimhyp3_request_input_dev - Allocate, populate and register the input device
 * @ts: our pimhyp3_ts_data pointer
 * Must be called during probe
 */
static int pimhyp3_request_input_dev(struct pimhyp3_ts_data *ts)
{
    int error;

    ts->input_dev = devm_input_allocate_device(&ts->client->dev);
    if (!ts->input_dev) {
        dev_err(&ts->client->dev, "Failed to allocate input device.");
        return -ENOMEM;
    }

    /* Set up device parameters */
    input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X,
                 0, ts->abs_x_max, 0, 0);
    input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y,
                 0, ts->abs_y_max, 0, 0);

    input_mt_init_slots(ts->input_dev, ts->max_touch_num,
                INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);

    ts->input_dev->name = "Cypress Capacitive TouchScreen";
    ts->input_dev->phys = "input/ts";
    ts->input_dev->id.bustype = BUS_I2C;
    ts->input_dev->id.vendor = 0x0416;
    ts->input_dev->id.product = ts->id;
    ts->input_dev->id.version = ts->version;

    error = input_register_device(ts->input_dev);
    if (error) {
        dev_err(&ts->client->dev,
        "Failed to register input device: %d", error);
    return error;
    }

    return 0;
}

static int retu_pwrbutton_probe(struct platform_device *pdev)
{
	struct retu_dev *rdev = dev_get_drvdata(pdev->dev.parent);
	struct input_dev *idev;
	int irq;
	int error;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;

	idev = devm_input_allocate_device(&pdev->dev);
	if (!idev)
		return -ENOMEM;

	idev->name = "retu-pwrbutton";
	idev->dev.parent = &pdev->dev;

	input_set_capability(idev, EV_KEY, KEY_POWER);
	input_set_drvdata(idev, rdev);

	error = devm_request_threaded_irq(&pdev->dev, irq,
					  NULL, retu_pwrbutton_irq, 0,
					  "retu-pwrbutton", idev);
	if (error)
		return error;

	error = input_register_device(idev);
	if (error)
		return error;

	return 0;
}

static int chtdc_ti_pwrbtn_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent);
	struct input_dev *input;
	int irq, err;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;
	input = devm_input_allocate_device(dev);
	if (!input)
		return -ENOMEM;
	input->name = pdev->name;
	input->phys = "power-button/input0";
	input->id.bustype = BUS_HOST;
	input_set_capability(input, EV_KEY, KEY_POWER);
	err = input_register_device(input);
	if (err)
		return err;

	dev_set_drvdata(dev, pmic->regmap);

	err = devm_request_threaded_irq(dev, irq, NULL,
					chtdc_ti_pwrbtn_interrupt,
					0, KBUILD_MODNAME, input);
	if (err)
		return err;

	device_init_wakeup(dev, true);
	dev_pm_set_wake_irq(dev, irq);
	return 0;
}

static int silead_ts_request_input_dev(struct silead_ts_data *data)
{
	struct device *dev = &data->client->dev;
	int error;

	data->input = devm_input_allocate_device(dev);
	if (!data->input) {
		dev_err(dev,
			"Failed to allocate input device\n");
		return -ENOMEM;
	}

	input_set_abs_params(data->input, ABS_MT_POSITION_X, 0, 4095, 0, 0);
	input_set_abs_params(data->input, ABS_MT_POSITION_Y, 0, 4095, 0, 0);
	touchscreen_parse_properties(data->input, true, &data->prop);

	input_mt_init_slots(data->input, data->max_fingers,
			    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED |
			    INPUT_MT_TRACK);

	if (device_property_read_bool(dev, "silead,home-button"))
		input_set_capability(data->input, EV_KEY, KEY_LEFTMETA);

	data->input->name = SILEAD_TS_NAME;
	data->input->phys = "input/ts";
	data->input->id.bustype = BUS_I2C;

	error = input_register_device(data->input);
	if (error) {
		dev_err(dev, "Failed to register input device: %d\n", error);
		return error;
	}

	return 0;
}

static int hall_input_init(struct platform_device *pdev,
		struct hall_data *data)
{
	int err = -1;

	data->hall_dev = devm_input_allocate_device(&pdev->dev);
	if (!data->hall_dev) {
		dev_err(&data->hall_dev->dev,
				"input device allocation failed\n");
		return -EINVAL;
	}
	data->hall_dev->name = LID_DEV_NAME;
	data->hall_dev->phys = HALL_INPUT;
	__set_bit(EV_SW, data->hall_dev->evbit);
	__set_bit(SW_LID, data->hall_dev->swbit);

	err = input_register_device(data->hall_dev);
	if (err < 0) {
		dev_err(&data->hall_dev->dev,
				"unable to register input device %s\n",
				LID_DEV_NAME);
		return err;
	}

	return 0;
}

static int gpio_vibrator_probe(struct platform_device *pdev)
{
	struct gpio_vibrator *vibrator;
	int err;

	vibrator = devm_kzalloc(&pdev->dev, sizeof(*vibrator), GFP_KERNEL);
	if (!vibrator)
		return -ENOMEM;

	vibrator->input = devm_input_allocate_device(&pdev->dev);
	if (!vibrator->input)
		return -ENOMEM;

	vibrator->vcc = devm_regulator_get(&pdev->dev, "vcc");
	err = PTR_ERR_OR_ZERO(vibrator->vcc);
	if (err) {
		if (err != -EPROBE_DEFER)
			dev_err(&pdev->dev, "Failed to request regulator: %d\n",
				err);
		return err;
	}

	vibrator->gpio = devm_gpiod_get(&pdev->dev, "enable", GPIOD_OUT_LOW);
	err = PTR_ERR_OR_ZERO(vibrator->gpio);
	if (err) {
		if (err != -EPROBE_DEFER)
			dev_err(&pdev->dev, "Failed to request main gpio: %d\n",
				err);
		return err;
	}

	INIT_WORK(&vibrator->play_work, gpio_vibrator_play_work);

	vibrator->input->name = "gpio-vibrator";
	vibrator->input->id.bustype = BUS_HOST;
	vibrator->input->close = gpio_vibrator_close;

	input_set_drvdata(vibrator->input, vibrator);
	input_set_capability(vibrator->input, EV_FF, FF_RUMBLE);

	err = input_ff_create_memless(vibrator->input, NULL,
				      gpio_vibrator_play_effect);
	if (err) {
		dev_err(&pdev->dev, "Couldn't create FF dev: %d\n", err);
		return err;
	}

	err = input_register_device(vibrator->input);
	if (err) {
		dev_err(&pdev->dev, "Couldn't register input dev: %d\n", err);
		return err;
	}

	platform_set_drvdata(pdev, vibrator);

	return 0;
}

static int pm8xxx_vib_probe(struct platform_device *pdev)
{
	struct pm8xxx_vib *vib;
	struct input_dev *input_dev;
	int error;
	unsigned int val;

	vib = devm_kzalloc(&pdev->dev, sizeof(*vib), GFP_KERNEL);
	if (!vib)
		return -ENOMEM;

	vib->regmap = dev_get_regmap(pdev->dev.parent, NULL);
	if (!vib->regmap)
		return -ENODEV;

	input_dev = devm_input_allocate_device(&pdev->dev);
	if (!input_dev)
		return -ENOMEM;

	INIT_WORK(&vib->work, pm8xxx_work_handler);
	vib->vib_input_dev = input_dev;

	/* operate in manual mode */
	error = regmap_read(vib->regmap, VIB_DRV, &val);
	if (error < 0)
		return error;

	val &= ~VIB_DRV_EN_MANUAL_MASK;
	error = regmap_write(vib->regmap, VIB_DRV, val);
	if (error < 0)
		return error;

	vib->reg_vib_drv = val;

	input_dev->name = "pm8xxx_vib_ffmemless";
	input_dev->id.version = 1;
	input_dev->close = pm8xxx_vib_close;
	input_set_drvdata(input_dev, vib);
	input_set_capability(vib->vib_input_dev, EV_FF, FF_RUMBLE);

	error = input_ff_create_memless(input_dev, NULL,
					pm8xxx_vib_play_effect);
	if (error) {
		dev_err(&pdev->dev,
			"couldn't register vibrator as FF device\n");
		return error;
	}

	error = input_register_device(input_dev);
	if (error) {
		dev_err(&pdev->dev, "couldn't register input device\n");
		return error;
	}

	platform_set_drvdata(pdev, vib);
	return 0;
}

static int twl4030_vibra_probe(struct platform_device *pdev)
{
	struct twl4030_vibra_data *pdata = dev_get_platdata(&pdev->dev);
	struct device_node *twl4030_core_node = pdev->dev.parent->of_node;
	struct vibra_info *info;
	int ret;

	if (!pdata && !twl4030_core_node) {
		dev_dbg(&pdev->dev, "platform_data not available\n");
		return -EINVAL;
	}

	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	info->dev = &pdev->dev;
	info->coexist = twl4030_vibra_check_coexist(pdata, twl4030_core_node);
	INIT_WORK(&info->play_work, vibra_play_work);

	info->input_dev = devm_input_allocate_device(&pdev->dev);
	if (info->input_dev == NULL) {
		dev_err(&pdev->dev, "couldn't allocate input device\n");
		return -ENOMEM;
	}

	input_set_drvdata(info->input_dev, info);

	info->input_dev->name = "twl4030:vibrator";
	info->input_dev->id.version = 1;
	info->input_dev->dev.parent = pdev->dev.parent;
	info->input_dev->close = twl4030_vibra_close;
	__set_bit(FF_RUMBLE, info->input_dev->ffbit);

	ret = input_ff_create_memless(info->input_dev, NULL, vibra_play);
	if (ret < 0) {
		dev_dbg(&pdev->dev, "couldn't register vibrator to FF\n");
		return ret;
	}

	ret = input_register_device(info->input_dev);
	if (ret < 0) {
		dev_dbg(&pdev->dev, "couldn't register input device\n");
		goto err_iff;
	}

	vibra_disable_leds();

	platform_set_drvdata(pdev, info);
	return 0;

err_iff:
	input_ff_destroy(info->input_dev);
	return ret;
}

static int
cht_pwrbtn_probe(struct platform_device *pdev)
{
	int ret;
	struct device *dev = &pdev->dev;
	struct input_dev *input;

	ret = devm_gpio_request_one(dev, CHT_PWRBTN_GPIO, GPIOF_DIR_IN | GPIOF_ACTIVE_LOW, CHT_PWRBTN_NAME);

	if (ret) {
		dev_err(dev, "Failed to request GPIO %d, error %d\n", CHT_PWRBTN_GPIO, ret);
		return ret;
	}

	input = devm_input_allocate_device(dev);

	if (!input) {
		dev_err(dev, "Failed to allocate input device\n");
		return -ENOMEM;
	}

	input->name = CHT_PWRBTN_NAME;
	input->evbit[0] = BIT_MASK(EV_KEY);
	input_set_capability(input, EV_KEY, KEY_POWER);

	ret = gpio_to_irq(CHT_PWRBTN_GPIO);

	if (ret < 0) {
		dev_err(dev, "Unable to get irq number for GPIO %d, error %d\n", CHT_PWRBTN_GPIO, ret);
		return ret;
	}

	ret = devm_request_irq(dev, ret, cht_pwrbtn_irq, (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING), CHT_PWRBTN_NAME, input);

	if (ret) {
		dev_err(dev, "Unable to request irq, error: %d\n", ret);
		return ret;
	}

	ret = input_register_device(input);

	if (ret) {
		dev_err(dev, "Unable to register input device, error: %d\n", ret);
		return ret;
	}

	platform_set_drvdata(pdev, input);
	device_init_wakeup(&pdev->dev, 1);

	dev_info(dev, "Driver successfully loaded");
	return 0;
}

static int jornada720_kbd_probe(struct platform_device *pdev)
{
	struct jornadakbd *jornadakbd;
	struct input_dev *input_dev;
	int i, err, irq;

	irq = platform_get_irq(pdev, 0);
	if (irq <= 0)
		return irq < 0 ? irq : -EINVAL;

	jornadakbd = devm_kzalloc(&pdev->dev, sizeof(*jornadakbd), GFP_KERNEL);
	input_dev = devm_input_allocate_device(&pdev->dev);
	if (!jornadakbd || !input_dev)
		return -ENOMEM;

	platform_set_drvdata(pdev, jornadakbd);

	memcpy(jornadakbd->keymap, jornada_std_keymap,
		sizeof(jornada_std_keymap));
	jornadakbd->input = input_dev;

	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
	input_dev->name = "HP Jornada 720 keyboard";
	input_dev->phys = "jornadakbd/input0";
	input_dev->keycode = jornadakbd->keymap;
	input_dev->keycodesize = sizeof(unsigned short);
	input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap);
	input_dev->id.bustype = BUS_HOST;
	input_dev->dev.parent = &pdev->dev;

	for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++)
		__set_bit(jornadakbd->keymap[i], input_dev->keybit);
	__clear_bit(KEY_RESERVED, input_dev->keybit);

	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

	err = devm_request_irq(&pdev->dev, irq, jornada720_kbd_interrupt,
			       IRQF_TRIGGER_FALLING, "jornadakbd", pdev);
	if (err) {
		dev_err(&pdev->dev, "unable to grab IRQ%d: %d\n", irq, err);
		return err;
	}

	return input_register_device(jornadakbd->input);
};

static int intel_hid_input_setup(struct platform_device *device)
{
	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
	int ret;

	priv->input_dev = devm_input_allocate_device(&device->dev);
	if (!priv->input_dev)
		return -ENOMEM;

	ret = sparse_keymap_setup(priv->input_dev, intel_hid_keymap, NULL);
	if (ret)
		return ret;

	priv->input_dev->name = "Intel HID events";
	priv->input_dev->id.bustype = BUS_HOST;

	return input_register_device(priv->input_dev);
}

static int intel_vbtn_input_setup(struct platform_device *device)
{
	struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
	int ret;

	priv->input_dev = devm_input_allocate_device(&device->dev);
	if (!priv->input_dev)
		return -ENOMEM;

	ret = sparse_keymap_setup(priv->input_dev, intel_vbtn_keymap, NULL);
	if (ret)
		return ret;

	priv->input_dev->dev.parent = &device->dev;
	priv->input_dev->name = "Intel Virtual Button driver";
	priv->input_dev->id.bustype = BUS_HOST;

	return input_register_device(priv->input_dev);
}

static int intel_button_array_input_setup(struct platform_device *device)
{
	struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
	int ret;

	/* Setup input device for 5 button array */
	priv->array = devm_input_allocate_device(&device->dev);
	if (!priv->array)
		return -ENOMEM;

	ret = sparse_keymap_setup(priv->array, intel_array_keymap, NULL);
	if (ret)
		return ret;

	priv->array->name = "Intel HID 5 button array";
	priv->array->id.bustype = BUS_HOST;

	return input_register_device(priv->array);
}

static int silead_ts_request_input_dev(struct silead_ts_data *data)
{
	struct device *dev = &data->client->dev;
	int ret;

	data->input_dev = devm_input_allocate_device(dev);
	if (!data->input_dev) {
		dev_err(dev,
			"Failed to allocate input device\n");
		return -ENOMEM;
	}

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

	input_set_abs_params(data->input_dev, ABS_MT_POSITION_X, 0,
			     data->x_max, 0, 0);
	input_set_abs_params(data->input_dev, ABS_MT_POSITION_Y, 0,
			     data->y_max, 0, 0);
	input_set_abs_params(data->input_dev, ABS_MT_TOUCH_MAJOR, 0,
			     255, 0, 0);
	input_set_abs_params(data->input_dev, ABS_MT_WIDTH_MAJOR, 0,
			     200, 0, 0);

	input_mt_init_slots(data->input_dev, data->max_fingers,
			    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);

	data->input_dev->name = SILEAD_TS_NAME;
	data->input_dev->phys = "input/ts";
	data->input_dev->id.bustype = BUS_I2C;

	ret = input_register_device(data->input_dev);
	if (ret) {
		dev_err(dev, "Failed to register input device: %d\n", ret);
		return ret;
	}

	return 0;
}