Commit a855a7ce authored by Jason Cooper's avatar Jason Cooper
Browse files

ARM: orion: wdt: use resource vice direct access 



Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 73995320

arch/arm/plat-orion/common.c

+6 −1
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include <plat/orion_wdt.h>

#include <plat/mv_xor.h>

#include <plat/ehci-orion.h>

#include <mach/bridge-regs.h>



/* Fill in the resources structure and link it into the platform

   device structure. There is always a memory region, and nearly
@@ -568,13 +569,17 @@ void __init orion_spi_1_init(unsigned long mapbase, 
 ****************************************************************************/

static struct orion_wdt_platform_data orion_wdt_data;



static struct resource orion_wdt_resource =

		DEFINE_RES_MEM(TIMER_VIRT_BASE, 0x28);



static struct platform_device orion_wdt_device = {

	.name		= "orion_wdt",

	.id		= -1,

	.dev		= {

		.platform_data	= &orion_wdt_data,

	},

	.num_resources	= 0,

	.resource	= &orion_wdt_resource,

	.num_resources	= 1,

};



void __init orion_wdt_init(unsigned long tclk)

drivers/watchdog/orion_wdt.c

+15 −9
Original line number Diff line number Diff line
@@ -28,9 +28,9 @@ 
/*

 * Watchdog timer block registers.

 */

#define TIMER_CTRL		(TIMER_VIRT_BASE + 0x0000)

#define TIMER_CTRL		0x0000

#define  WDT_EN			0x0010

#define WDT_VAL			(TIMER_VIRT_BASE + 0x0024)

#define WDT_VAL			0x0024



#define WDT_MAX_CYCLE_COUNT	0xffffffff

#define WDT_IN_USE		0
@@ -40,6 +40,7 @@ static int nowayout = WATCHDOG_NOWAYOUT; 
static int heartbeat = -1;		/* module parameter (seconds) */

static unsigned int wdt_max_duration;	/* (seconds) */

static unsigned int wdt_tclk;

static void __iomem *wdt_reg;

static unsigned long wdt_status;

static DEFINE_SPINLOCK(wdt_lock);
@@ -48,7 +49,7 @@ static void orion_wdt_ping(void) 
	spin_lock(&wdt_lock);



	/* Reload watchdog duration */

	writel(wdt_tclk * heartbeat, WDT_VAL);

	writel(wdt_tclk * heartbeat, wdt_reg + WDT_VAL);



	spin_unlock(&wdt_lock);

}
@@ -60,7 +61,7 @@ static void orion_wdt_enable(void) 
	spin_lock(&wdt_lock);



	/* Set watchdog duration */

	writel(wdt_tclk * heartbeat, WDT_VAL);

	writel(wdt_tclk * heartbeat, wdt_reg + WDT_VAL);



	/* Clear watchdog timer interrupt */

	reg = readl(BRIDGE_CAUSE);
@@ -68,9 +69,9 @@ static void orion_wdt_enable(void) 
	writel(reg, BRIDGE_CAUSE);



	/* Enable watchdog timer */

	reg = readl(TIMER_CTRL);

	reg = readl(wdt_reg + TIMER_CTRL);

	reg |= WDT_EN;

	writel(reg, TIMER_CTRL);

	writel(reg, wdt_reg + TIMER_CTRL);



	/* Enable reset on watchdog */

	reg = readl(RSTOUTn_MASK);
@@ -92,9 +93,9 @@ static void orion_wdt_disable(void) 
	writel(reg, RSTOUTn_MASK);



	/* Disable watchdog timer */

	reg = readl(TIMER_CTRL);

	reg = readl(wdt_reg + TIMER_CTRL);

	reg &= ~WDT_EN;

	writel(reg, TIMER_CTRL);

	writel(reg, wdt_reg + TIMER_CTRL);



	spin_unlock(&wdt_lock);

}
@@ -102,7 +103,7 @@ static void orion_wdt_disable(void) 
static int orion_wdt_get_timeleft(int *time_left)

{

	spin_lock(&wdt_lock);

	*time_left = readl(WDT_VAL) / wdt_tclk;

	*time_left = readl(wdt_reg + WDT_VAL) / wdt_tclk;

	spin_unlock(&wdt_lock);

	return 0;

}
@@ -236,6 +237,7 @@ static struct miscdevice orion_wdt_miscdev = { 
static int __devinit orion_wdt_probe(struct platform_device *pdev)

{

	struct orion_wdt_platform_data *pdata = pdev->dev.platform_data;

	struct resource *res;

	int ret;



	if (pdata) {
@@ -245,6 +247,10 @@ static int __devinit orion_wdt_probe(struct platform_device *pdev) 
		return -ENODEV;

	}



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);



	wdt_reg = ioremap(res->start, resource_size(res));



	if (orion_wdt_miscdev.parent)

		return -EBUSY;

	orion_wdt_miscdev.parent = &pdev->dev;