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| author | David S. Miller <davem@davemloft.net> | 2010-03-01 06:23:06 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-01 06:23:06 +0300 |
| commit | 47871889c601d8199c51a4086f77eebd77c29b0b (patch) | |
| tree | 40cdcac3bff0ee40cc33dcca61d0577cdf965f77 /drivers/watchdog/ar7_wdt.c | |
| parent | c16cc0b464b8876cfd57ce1c1dbcb6f9a6a0bce3 (diff) | |
| parent | 30ff056c42c665b9ea535d8515890857ae382540 (diff) | |
| download | linux-47871889c601d8199c51a4086f77eebd77c29b0b.tar.xz | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/firmware/iscsi_ibft.c
Diffstat (limited to 'drivers/watchdog/ar7_wdt.c')
| -rw-r--r-- | drivers/watchdog/ar7_wdt.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/watchdog/ar7_wdt.c b/drivers/watchdog/ar7_wdt.c index 2e94b71b20d9..2bb95cd308c1 100644 --- a/drivers/watchdog/ar7_wdt.c +++ b/drivers/watchdog/ar7_wdt.c @@ -34,6 +34,7 @@ #include <linux/ioport.h> #include <linux/io.h> #include <linux/uaccess.h> +#include <linux/clk.h> #include <asm/addrspace.h> #include <asm/mach-ar7/ar7.h> @@ -80,6 +81,8 @@ static struct resource *ar7_regs_wdt; /* Pointer to the remapped WDT IO space */ static struct ar7_wdt *ar7_wdt; +static struct clk *vbus_clk; + static void ar7_wdt_kick(u32 value) { WRITE_REG(ar7_wdt->kick_lock, 0x5555); @@ -138,17 +141,19 @@ static void ar7_wdt_disable(u32 value) static void ar7_wdt_update_margin(int new_margin) { u32 change; + u32 vbus_rate; - change = new_margin * (ar7_vbus_freq() / prescale_value); + vbus_rate = clk_get_rate(vbus_clk); + change = new_margin * (vbus_rate / prescale_value); if (change < 1) change = 1; if (change > 0xffff) change = 0xffff; ar7_wdt_change(change); - margin = change * prescale_value / ar7_vbus_freq(); + margin = change * prescale_value / vbus_rate; printk(KERN_INFO DRVNAME ": timer margin %d seconds (prescale %d, change %d, freq %d)\n", - margin, prescale_value, change, ar7_vbus_freq()); + margin, prescale_value, change, vbus_rate); } static void ar7_wdt_enable_wdt(void) @@ -298,6 +303,13 @@ static int __devinit ar7_wdt_probe(struct platform_device *pdev) goto out_mem_region; } + vbus_clk = clk_get(NULL, "vbus"); + if (IS_ERR(vbus_clk)) { + printk(KERN_ERR DRVNAME ": could not get vbus clock\n"); + rc = PTR_ERR(vbus_clk); + goto out_mem_region; + } + ar7_wdt_disable_wdt(); ar7_wdt_prescale(prescale_value); ar7_wdt_update_margin(margin); |