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authorLinus Walleij <linus.walleij@linaro.org>2018-12-22 10:12:31 (GMT)
committerWim Van Sebroeck <wim@linux-watchdog.org>2018-12-24 07:27:56 (GMT)
commitd2b911db8b73bc6bfa163515b4ff142fb0dda66d (patch)
treedead72124a5d5310ca43417ea07af78fb7a981c5 /drivers/watchdog
parent22ec9bb1cbcd613c73476ccd8f6a5e8c77793f66 (diff)
watchdog: mtx-1: Convert to use GPIO descriptor
This converts the MTX-1 driver to grab a GPIO descriptor associated with the device instead of using a resource with a global GPIO number. Augment the driver and the boardfile. Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org Cc: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Paul Burton <paul.burton@mips.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/mtx-1_wdt.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/watchdog/mtx-1_wdt.c b/drivers/watchdog/mtx-1_wdt.c
index 1fa7d2b..e028e0a 100644
--- a/drivers/watchdog/mtx-1_wdt.c
+++ b/drivers/watchdog/mtx-1_wdt.c
@@ -39,7 +39,7 @@
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/uaccess.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <asm/mach-au1x00/au1000.h>
@@ -55,7 +55,7 @@ static struct {
int queue;
int default_ticks;
unsigned long inuse;
- unsigned gpio;
+ struct gpio_desc *gpiod;
unsigned int gstate;
} mtx1_wdt_device;
@@ -67,7 +67,7 @@ static void mtx1_wdt_trigger(struct timer_list *unused)
/* toggle wdt gpio */
mtx1_wdt_device.gstate = !mtx1_wdt_device.gstate;
- gpio_set_value(mtx1_wdt_device.gpio, mtx1_wdt_device.gstate);
+ gpiod_set_value(mtx1_wdt_device.gpiod, mtx1_wdt_device.gstate);
if (mtx1_wdt_device.queue && ticks)
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
@@ -90,7 +90,7 @@ static void mtx1_wdt_start(void)
if (!mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 1;
mtx1_wdt_device.gstate = 1;
- gpio_set_value(mtx1_wdt_device.gpio, 1);
+ gpiod_set_value(mtx1_wdt_device.gpiod, 1);
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
}
mtx1_wdt_device.running++;
@@ -105,7 +105,7 @@ static int mtx1_wdt_stop(void)
if (mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 0;
mtx1_wdt_device.gstate = 0;
- gpio_set_value(mtx1_wdt_device.gpio, 0);
+ gpiod_set_value(mtx1_wdt_device.gpiod, 0);
}
ticks = mtx1_wdt_device.default_ticks;
spin_unlock_irqrestore(&mtx1_wdt_device.lock, flags);
@@ -198,12 +198,11 @@ static int mtx1_wdt_probe(struct platform_device *pdev)
{
int ret;
- mtx1_wdt_device.gpio = pdev->resource[0].start;
- ret = devm_gpio_request_one(&pdev->dev, mtx1_wdt_device.gpio,
- GPIOF_OUT_INIT_HIGH, "mtx1-wdt");
- if (ret < 0) {
+ mtx1_wdt_device.gpiod = devm_gpiod_get(&pdev->dev,
+ NULL, GPIOD_OUT_HIGH);
+ if (IS_ERR(mtx1_wdt_device.gpiod)) {
dev_err(&pdev->dev, "failed to request gpio");
- return ret;
+ return PTR_ERR(mtx1_wdt_device.gpiod);
}
spin_lock_init(&mtx1_wdt_device.lock);

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