diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 15:48:11 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 15:48:11 -0700 |
commit | 8690d8a9f6c2d5728a9c9f68231f1bb4de109e3a (patch) | |
tree | 175067bf67d29c75f310a1bb76d8429f579d8e9a /drivers/watchdog/davinci_wdt.c | |
parent | d3f12d36f148f101c568bdbce795e41cd9ceadf3 (diff) | |
parent | 3b9d49eea1c32e529fa932670a53358e1c8cd67e (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] i6300esb.c: start locking
[WATCHDOG] i6300esb.c: convert to platform device driver
[WATCHDOG] wdt.c: remove #ifdef CONFIG_WDT_501
[WATCHDOG] Fix io.h & uaccess.h includes.
[WATCHDOG] More coding-style and trivial clean-up
[WATCHDOG] struct file_operations should be const
[WATCHDOG] cpwd.c: Coding style - Clean-up
[WATCHDOG] hpwdt.c: Add new HP BMC controller.
[PATCH 13/13] drivers/watchdog: use USB API functions rather than constants
[WATCHDOG] orion5x_wdt: fix compile issue by providing tclk as platform data
[WATCHDOG] rc32434_wdt: make sure watchdog is not running at startup
[WATCHDOG] rc32434_wdt: add spin_locking
[WATCHDOG] rc32434_wdt: add shutdown method
[WATCHDOG] rc32434_wdt: add timeout module parameter
[WATCHDOG] rc32434_wdt: clean-up driver
[WATCHDOG] davinci: convert to ioremap() + io[read|write]
[WATCHDOG] w83697ug: add error checking
[WATCHDOG] cpwd.c & riowd.c - unlocked_ioctl
Diffstat (limited to 'drivers/watchdog/davinci_wdt.c')
-rw-r--r-- | drivers/watchdog/davinci_wdt.c | 45 |
1 files changed, 25 insertions, 20 deletions
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c index 2e136028673..c51d0b0ea0c 100644 --- a/drivers/watchdog/davinci_wdt.c +++ b/drivers/watchdog/davinci_wdt.c @@ -24,7 +24,7 @@ #include <linux/spinlock.h> #include <linux/uaccess.h> #include <linux/io.h> -#include <mach/hardware.h> +#include <linux/device.h> #define MODULE_NAME "DAVINCI-WDT: " @@ -75,9 +75,9 @@ static void wdt_service(void) spin_lock(&io_lock); /* put watchdog in service state */ - davinci_writel(WDKEY_SEQ0, wdt_base + WDTCR); + iowrite32(WDKEY_SEQ0, wdt_base + WDTCR); /* put watchdog in active state */ - davinci_writel(WDKEY_SEQ1, wdt_base + WDTCR); + iowrite32(WDKEY_SEQ1, wdt_base + WDTCR); spin_unlock(&io_lock); } @@ -90,29 +90,29 @@ static void wdt_enable(void) spin_lock(&io_lock); /* disable, internal clock source */ - davinci_writel(0, wdt_base + TCR); + iowrite32(0, wdt_base + TCR); /* reset timer, set mode to 64-bit watchdog, and unreset */ - davinci_writel(0, wdt_base + TGCR); + iowrite32(0, wdt_base + TGCR); tgcr = TIMMODE_64BIT_WDOG | TIM12RS_UNRESET | TIM34RS_UNRESET; - davinci_writel(tgcr, wdt_base + TGCR); + iowrite32(tgcr, wdt_base + TGCR); /* clear counter regs */ - davinci_writel(0, wdt_base + TIM12); - davinci_writel(0, wdt_base + TIM34); + iowrite32(0, wdt_base + TIM12); + iowrite32(0, wdt_base + TIM34); /* set timeout period */ timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) & 0xffffffff); - davinci_writel(timer_margin, wdt_base + PRD12); + iowrite32(timer_margin, wdt_base + PRD12); timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) >> 32); - davinci_writel(timer_margin, wdt_base + PRD34); + iowrite32(timer_margin, wdt_base + PRD34); /* enable run continuously */ - davinci_writel(ENAMODE12_PERIODIC, wdt_base + TCR); + iowrite32(ENAMODE12_PERIODIC, wdt_base + TCR); /* Once the WDT is in pre-active state write to * TIM12, TIM34, PRD12, PRD34, TCR, TGCR, WDTCR are * write protected (except for the WDKEY field) */ /* put watchdog in pre-active state */ - davinci_writel(WDKEY_SEQ0 | WDEN, wdt_base + WDTCR); + iowrite32(WDKEY_SEQ0 | WDEN, wdt_base + WDTCR); /* put watchdog in active state */ - davinci_writel(WDKEY_SEQ1 | WDEN, wdt_base + WDTCR); + iowrite32(WDKEY_SEQ1 | WDEN, wdt_base + WDTCR); spin_unlock(&io_lock); } @@ -197,17 +197,16 @@ static int davinci_wdt_probe(struct platform_device *pdev) { int ret = 0, size; struct resource *res; + struct device *dev = &pdev->dev; if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT) heartbeat = DEFAULT_HEARTBEAT; - printk(KERN_INFO MODULE_NAME - "DaVinci Watchdog Timer: heartbeat %d sec\n", heartbeat); + dev_info(dev, "heartbeat %d sec\n", heartbeat); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res == NULL) { - printk(KERN_INFO MODULE_NAME - "failed to get memory region resource\n"); + dev_err(dev, "failed to get memory region resource\n"); return -ENOENT; } @@ -215,20 +214,26 @@ static int davinci_wdt_probe(struct platform_device *pdev) wdt_mem = request_mem_region(res->start, size, pdev->name); if (wdt_mem == NULL) { - printk(KERN_INFO MODULE_NAME "failed to get memory region\n"); + dev_err(dev, "failed to get memory region\n"); return -ENOENT; } - wdt_base = (void __iomem *)(res->start); + + wdt_base = ioremap(res->start, size); + if (!wdt_base) { + dev_err(dev, "failed to map memory region\n"); + return -ENOMEM; + } ret = misc_register(&davinci_wdt_miscdev); if (ret < 0) { - printk(KERN_ERR MODULE_NAME "cannot register misc device\n"); + dev_err(dev, "cannot register misc device\n"); release_resource(wdt_mem); kfree(wdt_mem); } else { set_bit(WDT_DEVICE_INITED, &wdt_status); } + iounmap(wdt_base); return ret; } |