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serial: lantiq: Make driver modular 

Add changes so Lantiq serial driver can be compiled as a module.

Signed-off-by: Rahul Tanwar <rahul.tanwar@linux.intel.com>
Link: https://lore.kernel.org/r/ad9422de006c317401bfa5fe61bdd4293dd29b5e.1589176044.git.rahul.tanwar@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rahul Tanwar 2020-05-11 13:57:27 +08:00 committed by Greg Kroah-Hartman
parent ea7d3fd8a6
commit ad406341bd
2 changed files with 28 additions and 5 deletions
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4
drivers/tty/serial/Kconfig
View File

@ -1034,11 +1034,13 @@ config SERIAL_SIFIVE_CONSOLE
boot time.)
config SERIAL_LANTIQ
bool "Lantiq serial driver"
tristate "Lantiq serial driver"
depends on (LANTIQ || X86) || COMPILE_TEST
select SERIAL_CORE
help
Support for UART on Lantiq and Intel SoCs.
To compile this driver as a module, select M here. The
module will be called lantiq.
config SERIAL_LANTIQ_CONSOLE
bool "Console on Lantiq UART"

29
drivers/tty/serial/lantiq.c
View File

@ -15,6 +15,7 @@
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/lantiq.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
@ -823,8 +824,7 @@ static void free_irq_intel(struct uart_port *port)
free_irq(ltq_port->common_irq, port);
}
static int __init
lqasc_probe(struct platform_device *pdev)
static int lqasc_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct ltq_uart_port *ltq_port;
@ -908,6 +908,13 @@ lqasc_probe(struct platform_device *pdev)
return ret;
}
static int lqasc_remove(struct platform_device *pdev)
{
struct uart_port *port = platform_get_drvdata(pdev);
return uart_remove_one_port(&lqasc_reg, port);
}
static const struct ltq_soc_data soc_data_lantiq = {
.fetch_irq = fetch_irq_lantiq,
.request_irq = request_irq_lantiq,
@ -925,8 +932,11 @@ static const struct of_device_id ltq_asc_match[] = {
{ .compatible = "intel,lgm-asc", .data = &soc_data_intel },
{},
};
MODULE_DEVICE_TABLE(of, ltq_asc_match);
static struct platform_driver lqasc_driver = {
.probe = lqasc_probe,
.remove = lqasc_remove,
.driver = {
.name = DRVNAME,
.of_match_table = ltq_asc_match,
@ -942,10 +952,21 @@ init_lqasc(void)
if (ret != 0)
return ret;
ret = platform_driver_probe(&lqasc_driver, lqasc_probe);
ret = platform_driver_register(&lqasc_driver);
if (ret != 0)
uart_unregister_driver(&lqasc_reg);
return ret;
}
device_initcall(init_lqasc);
static void __exit exit_lqasc(void)
{
platform_driver_unregister(&lqasc_driver);
uart_unregister_driver(&lqasc_reg);
}
module_init(init_lqasc);
module_exit(exit_lqasc);
MODULE_DESCRIPTION("Serial driver for Lantiq & Intel gateway SoCs");
MODULE_LICENSE("GPL v2");