diff options
Diffstat (limited to 'drivers/watchdog/omap_wdt.c')
| -rw-r--r-- | drivers/watchdog/omap_wdt.c | 61 |
1 files changed, 25 insertions, 36 deletions
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c index af88ffd1068..3691b157516 100644 --- a/drivers/watchdog/omap_wdt.c +++ b/drivers/watchdog/omap_wdt.c @@ -34,7 +34,6 @@ #include <linux/mm.h> #include <linux/watchdog.h> #include <linux/reboot.h> -#include <linux/init.h> #include <linux/err.h> #include <linux/platform_device.h> #include <linux/moduleparam.h> @@ -58,7 +57,6 @@ struct omap_wdt_dev { void __iomem *base; /* physical */ struct device *dev; bool omap_wdt_users; - struct resource *mem; int wdt_trgr_pattern; struct mutex lock; /* to avoid races with PM */ }; @@ -68,14 +66,14 @@ static void omap_wdt_reload(struct omap_wdt_dev *wdev) void __iomem *base = wdev->base; /* wait for posted write to complete */ - while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x08) + while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x08) cpu_relax(); wdev->wdt_trgr_pattern = ~wdev->wdt_trgr_pattern; - __raw_writel(wdev->wdt_trgr_pattern, (base + OMAP_WATCHDOG_TGR)); + writel_relaxed(wdev->wdt_trgr_pattern, (base + OMAP_WATCHDOG_TGR)); /* wait for posted write to complete */ - while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x08) + while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x08) cpu_relax(); /* reloaded WCRR from WLDR */ } @@ -85,12 +83,12 @@ static void omap_wdt_enable(struct omap_wdt_dev *wdev) void __iomem *base = wdev->base; /* Sequence to enable the watchdog */ - __raw_writel(0xBBBB, base + OMAP_WATCHDOG_SPR); - while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x10) + writel_relaxed(0xBBBB, base + OMAP_WATCHDOG_SPR); + while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x10) cpu_relax(); - __raw_writel(0x4444, base + OMAP_WATCHDOG_SPR); - while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x10) + writel_relaxed(0x4444, base + OMAP_WATCHDOG_SPR); + while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x10) cpu_relax(); } @@ -99,12 +97,12 @@ static void omap_wdt_disable(struct omap_wdt_dev *wdev) void __iomem *base = wdev->base; /* sequence required to disable watchdog */ - __raw_writel(0xAAAA, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ - while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x10) + writel_relaxed(0xAAAA, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ + while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x10) cpu_relax(); - __raw_writel(0x5555, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ - while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x10) + writel_relaxed(0x5555, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ + while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x10) cpu_relax(); } @@ -115,11 +113,11 @@ static void omap_wdt_set_timer(struct omap_wdt_dev *wdev, void __iomem *base = wdev->base; /* just count up at 32 KHz */ - while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x04) + while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x04) cpu_relax(); - __raw_writel(pre_margin, base + OMAP_WATCHDOG_LDR); - while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x04) + writel_relaxed(pre_margin, base + OMAP_WATCHDOG_LDR); + while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x04) cpu_relax(); } @@ -135,11 +133,11 @@ static int omap_wdt_start(struct watchdog_device *wdog) pm_runtime_get_sync(wdev->dev); /* initialize prescaler */ - while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01) + while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x01) cpu_relax(); - __raw_writel((1 << 5) | (PTV << 2), base + OMAP_WATCHDOG_CNTRL); - while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01) + writel_relaxed((1 << 5) | (PTV << 2), base + OMAP_WATCHDOG_CNTRL); + while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x01) cpu_relax(); omap_wdt_set_timer(wdev, wdog->timeout); @@ -205,9 +203,9 @@ static const struct watchdog_ops omap_wdt_ops = { static int omap_wdt_probe(struct platform_device *pdev) { - struct omap_wd_timer_platform_data *pdata = pdev->dev.platform_data; + struct omap_wd_timer_platform_data *pdata = dev_get_platdata(&pdev->dev); struct watchdog_device *omap_wdt; - struct resource *res, *mem; + struct resource *res; struct omap_wdt_dev *wdev; u32 rs; int ret; @@ -216,29 +214,20 @@ static int omap_wdt_probe(struct platform_device *pdev) if (!omap_wdt) return -ENOMEM; - /* reserve static register mappings */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENOENT; - - mem = devm_request_mem_region(&pdev->dev, res->start, - resource_size(res), pdev->name); - if (!mem) - return -EBUSY; - wdev = devm_kzalloc(&pdev->dev, sizeof(*wdev), GFP_KERNEL); if (!wdev) return -ENOMEM; wdev->omap_wdt_users = false; - wdev->mem = mem; wdev->dev = &pdev->dev; wdev->wdt_trgr_pattern = 0x1234; mutex_init(&wdev->lock); - wdev->base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); - if (!wdev->base) - return -ENOMEM; + /* reserve static register mappings */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + wdev->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(wdev->base)) + return PTR_ERR(wdev->base); omap_wdt->info = &omap_wdt_info; omap_wdt->ops = &omap_wdt_ops; @@ -275,7 +264,7 @@ static int omap_wdt_probe(struct platform_device *pdev) } pr_info("OMAP Watchdog Timer Rev 0x%02x: initial timeout %d sec\n", - __raw_readl(wdev->base + OMAP_WATCHDOG_REV) & 0xFF, + readl_relaxed(wdev->base + OMAP_WATCHDOG_REV) & 0xFF, omap_wdt->timeout); pm_runtime_put_sync(wdev->dev); |