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watchdog: ebc-c384_wdt: Utilize the ISA bus driver

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The WinSystems EBC-C384 watchdog timer is controlled via ISA bus
communication. As such, the ISA bus driver is more appropriate than the
platform driver for the WinSystems EBC-C384 watchdog timer driver.

Cc: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
William Breathitt Gray 2016-05-01 18:44:26 -04:00 committed by Greg Kroah-Hartman
parent 9c2cfc19e6
commit 4ef1bec4e4
2 changed files with 11 additions and 34 deletions
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2
drivers/watchdog/Kconfig
View File

@ -738,7 +738,7 @@ config ALIM7101_WDT
config EBC_C384_WDT
tristate "WinSystems EBC-C384 Watchdog Timer"
depends on X86
depends on X86 && ISA
select WATCHDOG_CORE
help
Enables watchdog timer support for the watchdog timer on the

43
drivers/watchdog/ebc-c384_wdt.c
View File

@ -16,10 +16,10 @@
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/isa.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/watchdog.h>
@ -95,9 +95,8 @@ static const struct watchdog_info ebc_c384_wdt_info = {
.identity = MODULE_NAME
};
static int __init ebc_c384_wdt_probe(struct platform_device *pdev)
static int ebc_c384_wdt_probe(struct device *dev, unsigned int id)
{
struct device *dev = &pdev->dev;
struct watchdog_device *wdd;
if (!devm_request_region(dev, BASE_ADDR, ADDR_EXTENT, dev_name(dev))) {
@ -122,61 +121,39 @@ static int __init ebc_c384_wdt_probe(struct platform_device *pdev)
dev_warn(dev, "Invalid timeout (%u seconds), using default (%u seconds)\n",
timeout, WATCHDOG_TIMEOUT);
platform_set_drvdata(pdev, wdd);
dev_set_drvdata(dev, wdd);
return watchdog_register_device(wdd);
}
static int ebc_c384_wdt_remove(struct platform_device *pdev)
static int ebc_c384_wdt_remove(struct device *dev, unsigned int id)
{
struct watchdog_device *wdd = platform_get_drvdata(pdev);
struct watchdog_device *wdd = dev_get_drvdata(dev);
watchdog_unregister_device(wdd);
return 0;
}
static struct platform_driver ebc_c384_wdt_driver = {
static struct isa_driver ebc_c384_wdt_driver = {
.probe = ebc_c384_wdt_probe,
.driver = {
.name = MODULE_NAME
},
.remove = ebc_c384_wdt_remove
};
static struct platform_device *ebc_c384_wdt_device;
static int __init ebc_c384_wdt_init(void)
{
int err;
if (!dmi_match(DMI_BOARD_NAME, "EBC-C384 SBC"))
return -ENODEV;
ebc_c384_wdt_device = platform_device_alloc(MODULE_NAME, -1);
if (!ebc_c384_wdt_device)
return -ENOMEM;
err = platform_device_add(ebc_c384_wdt_device);
if (err)
goto err_platform_device;
err = platform_driver_probe(&ebc_c384_wdt_driver, ebc_c384_wdt_probe);
if (err)
goto err_platform_driver;
return 0;
err_platform_driver:
platform_device_del(ebc_c384_wdt_device);
err_platform_device:
platform_device_put(ebc_c384_wdt_device);
return err;
return isa_register_driver(&ebc_c384_wdt_driver, 1);
}
static void __exit ebc_c384_wdt_exit(void)
{
platform_device_unregister(ebc_c384_wdt_device);
platform_driver_unregister(&ebc_c384_wdt_driver);
isa_unregister_driver(&ebc_c384_wdt_driver);
}
module_init(ebc_c384_wdt_init);
@ -185,4 +162,4 @@ module_exit(ebc_c384_wdt_exit);
MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>");
MODULE_DESCRIPTION("WinSystems EBC-C384 watchdog timer driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" MODULE_NAME);
MODULE_ALIAS("isa:" MODULE_NAME);