diff options
Diffstat (limited to 'drivers/watchdog/omap_wdt.c')
| -rw-r--r-- | drivers/watchdog/omap_wdt.c | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c index 7de16a3f6849..9c389b16497f 100644 --- a/drivers/watchdog/omap_wdt.c +++ b/drivers/watchdog/omap_wdt.c @@ -71,12 +71,12 @@ static void omap_wdt_ping(struct omap_wdt_dev *wdev) { void __iomem *base = wdev->base; /* wait for posted write to complete */ - while ((omap_readl(base + OMAP_WATCHDOG_WPS)) & 0x08) + while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x08) cpu_relax(); wdt_trgr_pattern = ~wdt_trgr_pattern; - omap_writel(wdt_trgr_pattern, (base + OMAP_WATCHDOG_TGR)); + __raw_writel(wdt_trgr_pattern, (base + OMAP_WATCHDOG_TGR)); /* wait for posted write to complete */ - while ((omap_readl(base + OMAP_WATCHDOG_WPS)) & 0x08) + while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x08) cpu_relax(); /* reloaded WCRR from WLDR */ } @@ -86,11 +86,11 @@ static void omap_wdt_enable(struct omap_wdt_dev *wdev) void __iomem *base; base = wdev->base; /* Sequence to enable the watchdog */ - omap_writel(0xBBBB, base + OMAP_WATCHDOG_SPR); - while ((omap_readl(base + OMAP_WATCHDOG_WPS)) & 0x10) + __raw_writel(0xBBBB, base + OMAP_WATCHDOG_SPR); + while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x10) cpu_relax(); - omap_writel(0x4444, base + OMAP_WATCHDOG_SPR); - while ((omap_readl(base + OMAP_WATCHDOG_WPS)) & 0x10) + __raw_writel(0x4444, base + OMAP_WATCHDOG_SPR); + while ((__raw_readl(base + OMAP_WATCHDOG_WPS)) & 0x10) cpu_relax(); } @@ -99,11 +99,11 @@ static void omap_wdt_disable(struct omap_wdt_dev *wdev) void __iomem *base; base = wdev->base; /* sequence required to disable watchdog */ - omap_writel(0xAAAA, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ - while (omap_readl(base + OMAP_WATCHDOG_WPS) & 0x10) + __raw_writel(0xAAAA, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ + while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x10) cpu_relax(); - omap_writel(0x5555, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ - while (omap_readl(base + OMAP_WATCHDOG_WPS) & 0x10) + __raw_writel(0x5555, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */ + while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x10) cpu_relax(); } @@ -123,10 +123,10 @@ static void omap_wdt_set_timeout(struct omap_wdt_dev *wdev) base = wdev->base; /* just count up at 32 KHz */ - while (omap_readl(base + OMAP_WATCHDOG_WPS) & 0x04) + while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x04) cpu_relax(); - omap_writel(pre_margin, base + OMAP_WATCHDOG_LDR); - while (omap_readl(base + OMAP_WATCHDOG_WPS) & 0x04) + __raw_writel(pre_margin, base + OMAP_WATCHDOG_LDR); + while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x04) cpu_relax(); } @@ -152,10 +152,10 @@ static int omap_wdt_open(struct inode *inode, struct file *file) } /* initialize prescaler */ - while (omap_readl(base + OMAP_WATCHDOG_WPS) & 0x01) + while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01) cpu_relax(); - omap_writel((1 << 5) | (PTV << 2), base + OMAP_WATCHDOG_CNTRL); - while (omap_readl(base + OMAP_WATCHDOG_WPS) & 0x01) + __raw_writel((1 << 5) | (PTV << 2), base + OMAP_WATCHDOG_CNTRL); + while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01) cpu_relax(); file->private_data = (void *) wdev; @@ -224,7 +224,7 @@ static long omap_wdt_ioctl(struct file *file, unsigned int cmd, return put_user(0, (int __user *)arg); case WDIOC_GETBOOTSTATUS: if (cpu_is_omap16xx()) - return put_user(omap_readw(ARM_SYSST), + return put_user(__raw_readw(ARM_SYSST), (int __user *)arg); if (cpu_is_omap24xx()) return put_user(omap_prcm_get_reset_sources(), @@ -328,7 +328,12 @@ static int __init omap_wdt_probe(struct platform_device *pdev) goto fail; } } - wdev->base = (void __iomem *) (mem->start); + wdev->base = ioremap(res->start, res->end - res->start + 1); + if (!wdev->base) { + ret = -ENOMEM; + goto fail; + } + platform_set_drvdata(pdev, wdev); omap_wdt_disable(wdev); @@ -344,11 +349,11 @@ static int __init omap_wdt_probe(struct platform_device *pdev) goto fail; pr_info("OMAP Watchdog Timer Rev 0x%02x: initial timeout %d sec\n", - omap_readl(wdev->base + OMAP_WATCHDOG_REV) & 0xFF, + __raw_readl(wdev->base + OMAP_WATCHDOG_REV) & 0xFF, timer_margin); /* autogate OCP interface clock */ - omap_writel(0x01, wdev->base + OMAP_WATCHDOG_SYS_CONFIG); + __raw_writel(0x01, wdev->base + OMAP_WATCHDOG_SYS_CONFIG); omap_wdt_dev = pdev; @@ -363,6 +368,7 @@ fail: clk_put(wdev->mpu_wdt_ick); if (wdev->mpu_wdt_fck) clk_put(wdev->mpu_wdt_fck); + iounmap(wdev->base); kfree(wdev); } if (mem) { @@ -404,6 +410,8 @@ static int omap_wdt_remove(struct platform_device *pdev) clk_put(wdev->mpu_wdt_fck); wdev->mpu_wdt_fck = NULL; } + iounmap(wdev->base); + kfree(wdev); omap_wdt_dev = NULL; return 0; |