Esempi in C++ (Cpp) per spear_kbd_parse_dt

Esempio n. 1

File: spear-keyboard.c Progetto: AllenWeb/linux

static int __devinit spear_kbd_probe(struct platform_device *pdev)
{
	struct kbd_platform_data *pdata = dev_get_platdata(&pdev->dev);
	const struct matrix_keymap_data *keymap = pdata ? pdata->keymap : NULL;
	struct spear_kbd *kbd;
	struct input_dev *input_dev;
	struct resource *res;
	int irq;
	int error;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "no keyboard resource defined\n");
		return -EBUSY;
	}

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "not able to get irq for the device\n");
		return irq;
	}

	kbd = kzalloc(sizeof(*kbd), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!kbd || !input_dev) {
		dev_err(&pdev->dev, "out of memory\n");
		error = -ENOMEM;
		goto err_free_mem;
	}

	kbd->input = input_dev;
	kbd->irq = irq;

	if (!pdata) {
		error = spear_kbd_parse_dt(pdev, kbd);
		if (error)
			goto err_free_mem;
	} else {
		kbd->mode = pdata->mode;
		kbd->rep = pdata->rep;
	}

	kbd->res = request_mem_region(res->start, resource_size(res),
				      pdev->name);
	if (!kbd->res) {
		dev_err(&pdev->dev, "keyboard region already claimed\n");
		error = -EBUSY;
		goto err_free_mem;
	}

	kbd->io_base = ioremap(res->start, resource_size(res));
	if (!kbd->io_base) {
		dev_err(&pdev->dev, "ioremap failed for kbd_region\n");
		error = -ENOMEM;
		goto err_release_mem_region;
	}

	kbd->clk = clk_get(&pdev->dev, NULL);
	if (IS_ERR(kbd->clk)) {
		error = PTR_ERR(kbd->clk);
		goto err_iounmap;
	}

	input_dev->name = "Spear Keyboard";
	input_dev->phys = "keyboard/input0";
	input_dev->dev.parent = &pdev->dev;
	input_dev->id.bustype = BUS_HOST;
	input_dev->id.vendor = 0x0001;
	input_dev->id.product = 0x0001;
	input_dev->id.version = 0x0100;
	input_dev->open = spear_kbd_open;
	input_dev->close = spear_kbd_close;

	error = matrix_keypad_build_keymap(keymap, NULL, NUM_ROWS, NUM_COLS,
					   kbd->keycodes, input_dev);
	if (error) {
		dev_err(&pdev->dev, "Failed to build keymap\n");
		goto err_put_clk;
	}

	if (kbd->rep)
		__set_bit(EV_REP, input_dev->evbit);
	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

	input_set_drvdata(input_dev, kbd);

	error = request_irq(irq, spear_kbd_interrupt, 0, "keyboard", kbd);
	if (error) {
		dev_err(&pdev->dev, "request_irq fail\n");
		goto err_put_clk;
	}

	error = input_register_device(input_dev);
	if (error) {
		dev_err(&pdev->dev, "Unable to register keyboard device\n");
		goto err_free_irq;
	}

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

	return 0;

err_free_irq:
	free_irq(kbd->irq, kbd);
err_put_clk:
	clk_put(kbd->clk);
err_iounmap:
	iounmap(kbd->io_base);
err_release_mem_region:
	release_mem_region(res->start, resource_size(res));
err_free_mem:
	input_free_device(input_dev);
	kfree(kbd);

	return error;
}

Esempio n. 2

File: spear-keyboard.c Progetto: ChrisOHu/linux

static int spear_kbd_probe(struct platform_device *pdev)
{
	struct kbd_platform_data *pdata = dev_get_platdata(&pdev->dev);
	const struct matrix_keymap_data *keymap = pdata ? pdata->keymap : NULL;
	struct spear_kbd *kbd;
	struct input_dev *input_dev;
	struct resource *res;
	int irq;
	int error;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "no keyboard resource defined\n");
		return -EBUSY;
	}

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "not able to get irq for the device\n");
		return irq;
	}

	kbd = devm_kzalloc(&pdev->dev, sizeof(*kbd), GFP_KERNEL);
	if (!kbd) {
		dev_err(&pdev->dev, "not enough memory for driver data\n");
		return -ENOMEM;
	}

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

	kbd->input = input_dev;
	kbd->irq = irq;

	if (!pdata) {
		error = spear_kbd_parse_dt(pdev, kbd);
		if (error)
			return error;
	} else {
		kbd->mode = pdata->mode;
		kbd->rep = pdata->rep;
		kbd->suspended_rate = pdata->suspended_rate;
	}

	kbd->io_base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(kbd->io_base))
		return PTR_ERR(kbd->io_base);

	kbd->clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(kbd->clk))
		return PTR_ERR(kbd->clk);

	input_dev->name = "Spear Keyboard";
	input_dev->phys = "keyboard/input0";
	input_dev->id.bustype = BUS_HOST;
	input_dev->id.vendor = 0x0001;
	input_dev->id.product = 0x0001;
	input_dev->id.version = 0x0100;
	input_dev->open = spear_kbd_open;
	input_dev->close = spear_kbd_close;

	error = matrix_keypad_build_keymap(keymap, NULL, NUM_ROWS, NUM_COLS,
					   kbd->keycodes, input_dev);
	if (error) {
		dev_err(&pdev->dev, "Failed to build keymap\n");
		return error;
	}

	if (kbd->rep)
		__set_bit(EV_REP, input_dev->evbit);
	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

	input_set_drvdata(input_dev, kbd);

	error = devm_request_irq(&pdev->dev, irq, spear_kbd_interrupt, 0,
			"keyboard", kbd);
	if (error) {
		dev_err(&pdev->dev, "request_irq failed\n");
		return error;
	}

	error = clk_prepare(kbd->clk);
	if (error)
		return error;

	error = input_register_device(input_dev);
	if (error) {
		dev_err(&pdev->dev, "Unable to register keyboard device\n");
		clk_unprepare(kbd->clk);
		return error;
	}

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

	return 0;
}