diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_pxa.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_pxa.c | 51 |
1 files changed, 16 insertions, 35 deletions
diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c index 4d68731af534..6dd0190b4843 100644 --- a/drivers/tty/serial/8250/8250_pxa.c +++ b/drivers/tty/serial/8250/8250_pxa.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * drivers/tty/serial/8250/8250_pxa.c -- driver for PXA on-board UARTS * Copyright: (C) 2013 Sergei Ianovich <ynvich@gmail.com> @@ -7,12 +8,6 @@ * Copyright: (C) 2003 Monta Vista Software, Inc. * * Based on drivers/serial/8250.c by Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * */ #include <linux/device.h> @@ -23,12 +18,10 @@ #include <linux/serial_core.h> #include <linux/serial_reg.h> #include <linux/of.h> -#include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/clk.h> -#include <linux/pm_runtime.h> #include "8250.h" @@ -67,7 +60,7 @@ static const struct of_device_id serial_pxa_dt_ids[] = { MODULE_DEVICE_TABLE(of, serial_pxa_dt_ids); /* Uart divisor latch write */ -static void serial_pxa_dl_write(struct uart_8250_port *up, int value) +static void serial_pxa_dl_write(struct uart_8250_port *up, u32 value) { unsigned int dll; @@ -98,12 +91,11 @@ static int serial_pxa_probe(struct platform_device *pdev) { struct uart_8250_port uart = {}; struct pxa8250_data *data; - struct resource *mmres, *irqres; + struct resource *mmres; int ret; mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0); - irqres = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!mmres || !irqres) + if (!mmres) return -ENODEV; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); @@ -119,16 +111,21 @@ static int serial_pxa_probe(struct platform_device *pdev) return ret; uart.port.type = PORT_XSCALE; - uart.port.iotype = UPIO_MEM32; uart.port.mapbase = mmres->start; - uart.port.regshift = 2; - uart.port.irq = irqres->start; - uart.port.fifosize = 64; - uart.port.flags = UPF_IOREMAP | UPF_SKIP_TEST; + uart.port.flags = UPF_IOREMAP | UPF_SKIP_TEST | UPF_FIXED_TYPE; uart.port.dev = &pdev->dev; uart.port.uartclk = clk_get_rate(data->clk); uart.port.pm = serial_pxa_pm; uart.port.private_data = data; + + ret = uart_read_port_properties(&uart.port); + if (ret) + return ret; + + uart.port.iotype = UPIO_MEM32; + uart.port.regshift = 2; + uart.port.fifosize = 64; + uart.tx_loadsz = 32; uart.dl_write = serial_pxa_dl_write; ret = serial8250_register_8250_port(&uart); @@ -146,15 +143,13 @@ static int serial_pxa_probe(struct platform_device *pdev) return ret; } -static int serial_pxa_remove(struct platform_device *pdev) +static void serial_pxa_remove(struct platform_device *pdev) { struct pxa8250_data *data = platform_get_drvdata(pdev); serial8250_unregister_port(data->line); clk_unprepare(data->clk); - - return 0; } static struct platform_driver serial_pxa_driver = { @@ -170,21 +165,7 @@ static struct platform_driver serial_pxa_driver = { module_platform_driver(serial_pxa_driver); -#ifdef CONFIG_SERIAL_8250_CONSOLE -static int __init early_serial_pxa_setup(struct earlycon_device *device, - const char *options) -{ - struct uart_port *port = &device->port; - - if (!(device->port.membase || device->port.iobase)) - return -ENODEV; - - port->regshift = 2; - return early_serial8250_setup(device, NULL); -} -OF_EARLYCON_DECLARE(early_pxa, "mrvl,pxa-uart", early_serial_pxa_setup); -#endif - MODULE_AUTHOR("Sergei Ianovich"); +MODULE_DESCRIPTION("driver for PXA on-board UARTS"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:pxa2xx-uart"); |