diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/ar933x_uart.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c index 0437a9e08d58..acd03af7cd52 100644 --- a/drivers/tty/serial/ar933x_uart.c +++ b/drivers/tty/serial/ar933x_uart.c @@ -17,6 +17,8 @@ #include <linux/sysrq.h> #include <linux/delay.h> #include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_platform.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/serial_core.h> @@ -623,13 +625,24 @@ static int ar933x_uart_probe(struct platform_device *pdev) struct uart_port *port; struct resource *mem_res; struct resource *irq_res; + struct device_node *np; unsigned int baud; int id; int ret; - id = pdev->id; - if (id == -1) - id = 0; + np = pdev->dev.of_node; + if (config_enabled(CONFIG_OF) && np) { + id = of_alias_get_id(np, "serial"); + if (id < 0) { + dev_err(&pdev->dev, "unable to get alias id, err=%d\n", + id); + return id; + } + } else { + id = pdev->id; + if (id == -1) + id = 0; + } if (id > CONFIG_SERIAL_AR933X_NR_UARTS) return -EINVAL; @@ -713,12 +726,21 @@ static int ar933x_uart_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static const struct of_device_id ar933x_uart_of_ids[] = { + { .compatible = "qca,ar9330-uart" }, + {}, +}; +MODULE_DEVICE_TABLE(of, ar933x_uart_of_ids); +#endif + static struct platform_driver ar933x_uart_platform_driver = { .probe = ar933x_uart_probe, .remove = ar933x_uart_remove, .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, + .of_match_table = of_match_ptr(ar933x_uart_of_ids), }, }; |