C++ (Cpp) sprd_probe_dt_alias Examples

Example #1

File: sprd_serial.c Project: DenisLug/mptcp

static int sprd_probe(struct platform_device *pdev)
{
	struct resource *res;
	struct uart_port *up;
	struct clk *clk;
	int irq;
	int index;
	int ret;

	for (index = 0; index < ARRAY_SIZE(sprd_port); index++)
		if (sprd_port[index] == NULL)
			break;

	if (index == ARRAY_SIZE(sprd_port))
		return -EBUSY;

	index = sprd_probe_dt_alias(index, &pdev->dev);

	sprd_port[index] = devm_kzalloc(&pdev->dev,
		sizeof(*sprd_port[index]), GFP_KERNEL);
	if (!sprd_port[index])
		return -ENOMEM;

	up = &sprd_port[index]->port;
	up->dev = &pdev->dev;
	up->line = index;
	up->type = PORT_SPRD;
	up->iotype = UPIO_MEM;
	up->uartclk = SPRD_DEF_RATE;
	up->fifosize = SPRD_FIFO_SIZE;
	up->ops = &serial_sprd_ops;
	up->flags = UPF_BOOT_AUTOCONF;

	clk = devm_clk_get(&pdev->dev, NULL);
	if (!IS_ERR_OR_NULL(clk))
		up->uartclk = clk_get_rate(clk);

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "not provide mem resource\n");
		return -ENODEV;
	}
	up->mapbase = res->start;
	up->membase = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(up->membase))
		return PTR_ERR(up->membase);

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "not provide irq resource\n");
		return -ENODEV;
	}
	up->irq = irq;

	if (!sprd_ports_num) {
		ret = uart_register_driver(&sprd_uart_driver);
		if (ret < 0) {
			pr_err("Failed to register SPRD-UART driver\n");
			return ret;
		}
	}
	sprd_ports_num++;

	ret = uart_add_one_port(&sprd_uart_driver, up);
	if (ret) {
		sprd_port[index] = NULL;
		sprd_remove(pdev);
	}

	platform_set_drvdata(pdev, up);

	return ret;
}

Example #2

File: sprd_serial.c Project: avagin/linux

static int sprd_probe(struct platform_device *pdev)
{
	struct resource *res;
	struct uart_port *up;
	int irq;
	int index;
	int ret;

	for (index = 0; index < ARRAY_SIZE(sprd_port); index++)
		if (sprd_port[index] == NULL)
			break;

	if (index == ARRAY_SIZE(sprd_port))
		return -EBUSY;

	index = sprd_probe_dt_alias(index, &pdev->dev);

	sprd_port[index] = devm_kzalloc(&pdev->dev, sizeof(*sprd_port[index]),
					GFP_KERNEL);
	if (!sprd_port[index])
		return -ENOMEM;

	up = &sprd_port[index]->port;
	up->dev = &pdev->dev;
	up->line = index;
	up->type = PORT_SPRD;
	up->iotype = UPIO_MEM;
	up->uartclk = SPRD_DEF_RATE;
	up->fifosize = SPRD_FIFO_SIZE;
	up->ops = &serial_sprd_ops;
	up->flags = UPF_BOOT_AUTOCONF;

	ret = sprd_clk_init(up);
	if (ret)
		return ret;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	up->membase = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(up->membase))
		return PTR_ERR(up->membase);

	up->mapbase = res->start;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(&pdev->dev, "not provide irq resource: %d\n", irq);
		return irq;
	}
	up->irq = irq;

	/*
	 * Allocate one dma buffer to prepare for receive transfer, in case
	 * memory allocation failure at runtime.
	 */
	ret = sprd_rx_alloc_buf(sprd_port[index]);
	if (ret)
		return ret;

	if (!sprd_ports_num) {
		ret = uart_register_driver(&sprd_uart_driver);
		if (ret < 0) {
			pr_err("Failed to register SPRD-UART driver\n");
			return ret;
		}
	}
	sprd_ports_num++;

	ret = uart_add_one_port(&sprd_uart_driver, up);
	if (ret) {
		sprd_port[index] = NULL;
		sprd_remove(pdev);
	}

	platform_set_drvdata(pdev, up);

	return ret;
}