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serial: 8250_tegra: Switch to use uart_read_port_properties()

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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@linux.intel.com>
Link: https://lore.kernel.org/r/20240304123035.758700-14-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2024-03-04 14:27:14 +02:00 committed by Greg Kroah-Hartman
parent cc6628f07e
commit 266bc29dad
1 changed files with 9 additions and 17 deletions
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26
drivers/tty/serial/8250/8250_tegra.c
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@ -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");