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serial: 8250_lpc18xx: 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/20240304123035.758700-10-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2024-03-04 14:27:10 +02:00 committed by Greg Kroah-Hartman
parent d6bd42f2c2
commit 0087b9e694
1 changed files with 8 additions and 12 deletions
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20
drivers/tty/serial/8250/8250_lpc18xx.c
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@ -92,11 +92,7 @@ static int lpc18xx_serial_probe(struct platform_device *pdev)
struct lpc18xx_uart_data *data;
struct uart_8250_port uart;
struct resource *res;
int irq, ret;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
int ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@ -139,19 +135,12 @@ static int lpc18xx_serial_probe(struct platform_device *pdev)
goto dis_clk_reg;
}
ret = of_alias_get_id(pdev->dev.of_node, "serial");
if (ret >= 0)
uart.port.line = ret;
data->dma.rx_param = data;
data->dma.tx_param = data;
spin_lock_init(&uart.port.lock);
uart.port.dev = &pdev->dev;
uart.port.irq = irq;
uart.port.iotype = UPIO_MEM32;
uart.port.mapbase = res->start;
uart.port.regshift = 2;
uart.port.type = PORT_16550A;
uart.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_SKIP_TEST;
uart.port.uartclk = clk_get_rate(data->clk_uart);
@ -160,6 +149,13 @@ static int lpc18xx_serial_probe(struct platform_device *pdev)
uart.port.rs485_supported = lpc18xx_rs485_supported;
uart.port.serial_out = lpc18xx_uart_serial_out;
ret = uart_read_port_properties(&uart.port);
if (ret)
return ret;
uart.port.iotype = UPIO_MEM32;
uart.port.regshift = 2;
uart.dma = &data->dma;
uart.dma->rxconf.src_maxburst = 1;
uart.dma->txconf.dst_maxburst = 1;