C++ (Cpp) matrix_keypad_parse_dt示例

示例#1

文件： matrix_keypad.c 项目： AD5GB/kernel_n5_3.10-experimental

static int matrix_keypad_probe(struct platform_device *pdev)
{
	const struct matrix_keypad_platform_data *pdata;
	struct matrix_keypad *keypad;
	struct input_dev *input_dev;
	int err;

	pdata = dev_get_platdata(&pdev->dev);
	if (!pdata) {
		pdata = matrix_keypad_parse_dt(&pdev->dev);
		if (IS_ERR(pdata)) {
			dev_err(&pdev->dev, "no platform data defined\n");
			return PTR_ERR(pdata);
		}
	} else if (!pdata->keymap_data) {
		dev_err(&pdev->dev, "no keymap data defined\n");
		return -EINVAL;
	}

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

	keypad->input_dev = input_dev;
	keypad->pdata = pdata;
	keypad->row_shift = get_count_order(pdata->num_col_gpios);
	keypad->stopped = true;
	INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);
	mutex_init(&keypad->lock);

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

	err = matrix_keypad_build_keymap(pdata->keymap_data, NULL,
					 pdata->num_row_gpios,
					 pdata->num_col_gpios,
					 NULL, input_dev);
	if (err) {
		dev_err(&pdev->dev, "failed to build keymap\n");
		goto err_free_mem;
	}

	if (!pdata->no_autorepeat)
		__set_bit(EV_REP, input_dev->evbit);
	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
	input_set_drvdata(input_dev, keypad);

	err = matrix_keypad_init_gpio(pdev, keypad);
	if (err)
		goto err_free_mem;

	err = input_register_device(keypad->input_dev);
	if (err)
		goto err_free_gpio;

	device_init_wakeup(&pdev->dev, pdata->wakeup);
	platform_set_drvdata(pdev, keypad);

	return 0;

err_free_gpio:
	matrix_keypad_free_gpio(keypad);
err_free_mem:
	input_free_device(input_dev);
	kfree(keypad);
	return err;
}

示例#2

文件： matrix_keypad.c 项目： MikeForeskin/Vindicator-S6-MM

static int matrix_keypad_probe(struct platform_device *pdev)
{
	struct matrix_keypad_platform_data *pdata;
	struct matrix_keypad *keypad;
	struct input_dev *input_dev;
#ifdef CONFIG_SUPPORT_KEYPAD_LED
	struct device *sec_keypad;
#endif
	int err;

	pdata = dev_get_platdata(&pdev->dev);
	if (!pdata) {
		pdata = matrix_keypad_parse_dt(&pdev->dev);
		if (IS_ERR(pdata)) {
			dev_err(&pdev->dev, "no platform data defined\n");
			return PTR_ERR(pdata);
		}
	} else if (!pdata->keymap_data) {
		dev_err(&pdev->dev, "no keymap data defined\n");
		return -EINVAL;
	}

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

	keypad->input_dev = input_dev;
	keypad->pdata = pdata;
	keypad->row_shift = get_count_order(pdata->num_col_gpios);
	keypad->stopped = true;
	INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);
	spin_lock_init(&keypad->lock);

	if (pdata->project)
		input_dev->name		= pdata->project;
	else
		input_dev->name		= pdev->name;

	input_dev->id.bustype	= BUS_HOST;
	input_dev->dev.parent	= &pdev->dev;
	input_dev->open		= matrix_keypad_start;
	input_dev->close	= matrix_keypad_stop;

	err = matrix_keypad_build_keymap(pdata->keymap_data, NULL,
					 pdata->num_row_gpios,
					 pdata->num_col_gpios,
					 NULL, input_dev);
	if (err) {
		dev_err(&pdev->dev, "failed to build keymap\n");
		goto err_free_mem;
	}

	if (!pdata->no_autorepeat)
		__set_bit(EV_REP, input_dev->evbit);
	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
	input_set_drvdata(input_dev, keypad);

	err = matrix_keypad_init_gpio(pdev, keypad);
	if (err)
		goto err_free_mem;

	err = input_register_device(keypad->input_dev);
	if (err)
		goto err_free_gpio;

#ifdef CONFIG_SUPPORT_KEYPAD_LED
/* keypad led control */
	sec_keypad = sec_device_create(pdata, "sec_keypad");
	if (IS_ERR(sec_keypad))
		dev_err(&pdev->dev,"Failed to create device(sec_key)!\n");

	err = device_create_file(sec_keypad, &dev_attr_brightness);
	if (err) {
		dev_err(&pdev->dev,"Failed to create device file in sysfs entries(%s)!\n",
				dev_attr_brightness.attr.name);
	}

	dev_set_drvdata(sec_keypad, pdata);

	pdata->vddo_vreg = regulator_get(&pdev->dev,"vddo");
	if (IS_ERR(pdata->vddo_vreg)){
		pdata->vddo_vreg = NULL;
		printk(KERN_INFO "pdata->vddo_vreg error\n");
		err = -EPERM;
		goto err_free_gpio;
	}
#endif
	device_init_wakeup(&pdev->dev, pdata->wakeup);
	platform_set_drvdata(pdev, keypad);

	return 0;

err_free_gpio:
	matrix_keypad_free_gpio(keypad);
err_free_mem:
	input_free_device(input_dev);
	kfree(keypad);
	return err;
}