MIPS: Alchemy: Clean up GPIO registers and accessors

[firefly-linux-kernel-4.4.55.git] / drivers / watchdog / mtx-1_wdt.c

diff --git a/drivers/watchdog/mtx-1_wdt.c b/drivers/watchdog/mtx-1_wdt.c
index 5ec5ac1f78782296c5343ac07ec43932f25ad14e..1479dc4d612922327e5c2314862ace3b99922a74 100644 (file)
--- a/drivers/watchdog/mtx-1_wdt.c
+++ b/drivers/watchdog/mtx-1_wdt.c
@@ -66,6 +66,7 @@ static struct {
        int default_ticks;
        unsigned long inuse;
        unsigned gpio;
+       int gstate;
 } mtx1_wdt_device;
 
 static void mtx1_wdt_trigger(unsigned long unused)
@@ -75,13 +76,13 @@ static void mtx1_wdt_trigger(unsigned long unused)
        spin_lock(&mtx1_wdt_device.lock);
        if (mtx1_wdt_device.running)
                ticks--;
-       /*
-        * toggle GPIO2_15
-        */
-       tmp = au_readl(GPIO2_DIR);
-       tmp = (tmp & ~(1 << mtx1_wdt_device.gpio)) |
-             ((~tmp) & (1 << mtx1_wdt_device.gpio));
-       au_writel(tmp, GPIO2_DIR);
+
+       /* toggle wdt gpio */
+       mtx1_wdt_device.gstate = ~mtx1_wdt_device.gstate;
+       if (mtx1_wdt_device.gstate)
+               gpio_direction_output(mtx1_wdt_device.gpio, 1);
+       else
+               gpio_direction_input(mtx1_wdt_device.gpio);
 
        if (mtx1_wdt_device.queue && ticks)
                mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
@@ -103,7 +104,8 @@ static void mtx1_wdt_start(void)
        spin_lock_irqsave(&mtx1_wdt_device.lock, flags);
        if (!mtx1_wdt_device.queue) {
                mtx1_wdt_device.queue = 1;
-               gpio_set_value(mtx1_wdt_device.gpio, 1);
+               mtx1_wdt_device.gstate = 1;
+               gpio_direction_output(mtx1_wdt_device.gpio, 1);
                mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
        }
        mtx1_wdt_device.running++;
@@ -117,7 +119,8 @@ static int mtx1_wdt_stop(void)
        spin_lock_irqsave(&mtx1_wdt_device.lock, flags);
        if (mtx1_wdt_device.queue) {
                mtx1_wdt_device.queue = 0;
-               gpio_set_value(mtx1_wdt_device.gpio, 0);
+               mtx1_wdt_device.gstate = 0;
+               gpio_direction_output(mtx1_wdt_device.gpio, 0);
        }
        ticks = mtx1_wdt_device.default_ticks;
        spin_unlock_irqrestore(&mtx1_wdt_device.lock, flags);