[PATCH v3 13/14] serial: 8250_tegra: Switch to use uart_read_port_properties()

[Andy Shevchenko]

Since we have now a common helper to read port properties
use it instead of sparse home grown solution.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/tty/serial/8250/8250_tegra.c | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_tegra.c b/drivers/tty/serial/8250/8250_tegra.c
index ba352262df75..60a80d00d251 100644
--- a/drivers/tty/serial/8250/8250_tegra.c
+++ b/drivers/tty/serial/8250/8250_tegra.c
@@ -57,25 +57,11 @@ static int tegra_uart_probe(struct platform_device *pdev)
 	port = &port8250.port;
 	spin_lock_init(&port->lock);
 
-	port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT |
-		      UPF_FIXED_TYPE;
-	port->iotype = UPIO_MEM32;
-	port->regshift = 2;
+	port->flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_FIXED_TYPE;
 	port->type = PORT_TEGRA;
-	port->irqflags |= IRQF_SHARED;
 	port->dev = &pdev->dev;
 	port->handle_break = tegra_uart_handle_break;
 
-	ret = of_alias_get_id(pdev->dev.of_node, "serial");
-	if (ret >= 0)
-		port->line = ret;
-
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0)
-		return ret;
-
-	port->irq = ret;
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -ENODEV;
@@ -88,12 +74,18 @@ static int tegra_uart_probe(struct platform_device *pdev)
 	port->mapbase = res->start;
 	port->mapsize = resource_size(res);
 
+	ret = uart_read_port_properties(port);
+	if (ret)
+		return ret;
+
+	port->iotype = UPIO_MEM32;
+	port->regshift = 2;
+
 	uart->rst = devm_reset_control_get_optional_shared(&pdev->dev, NULL);
 	if (IS_ERR(uart->rst))
 		return PTR_ERR(uart->rst);
 
-	if (device_property_read_u32(&pdev->dev, "clock-frequency",
-				     &port->uartclk)) {
+	if (!port->uartclk) {
 		uart->clk = devm_clk_get(&pdev->dev, NULL);
 		if (IS_ERR(uart->clk)) {
 			dev_err(&pdev->dev, "failed to get clock!\n");
-- 
2.43.0.rc1.1.gbec44491f096