diff options
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/watchdog/ar7_wdt.c | 18 | ||||
| -rw-r--r-- | drivers/watchdog/bfin_wdt.c | 13 | ||||
| -rw-r--r-- | drivers/watchdog/ixp2000_wdt.c | 1 | ||||
| -rw-r--r-- | drivers/watchdog/sbc_fitpc2_wdt.c | 11 |
5 files changed, 30 insertions, 17 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 088f32f29a6..050ee147592 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -396,8 +396,8 @@ config SBC_FITPC2_WATCHDOG tristate "Compulab SBC-FITPC2 watchdog" depends on X86 ---help--- - This is the driver for the built-in watchdog timer on the fit-PC2 - Single-board computer made by Compulab. + This is the driver for the built-in watchdog timer on the fit-PC2, + fit-PC2i, CM-iAM single-board computers made by Compulab. It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux. When "Watchdog Timer Value" enabled one can set 31-255 s operational range. diff --git a/drivers/watchdog/ar7_wdt.c b/drivers/watchdog/ar7_wdt.c index 2e94b71b20d..2bb95cd308c 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); diff --git a/drivers/watchdog/bfin_wdt.c b/drivers/watchdog/bfin_wdt.c index c7b3f9df231..2159e668751 100644 --- a/drivers/watchdog/bfin_wdt.c +++ b/drivers/watchdog/bfin_wdt.c @@ -1,9 +1,8 @@ /* * Blackfin On-Chip Watchdog Driver - * Supports BF53[123]/BF53[467]/BF54[2489]/BF561 * * Originally based on softdog.c - * Copyright 2006-2007 Analog Devices Inc. + * Copyright 2006-2010 Analog Devices Inc. * Copyright 2006-2007 Michele d'Amico * Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk> * @@ -137,13 +136,15 @@ static int bfin_wdt_running(void) */ static int bfin_wdt_set_timeout(unsigned long t) { - u32 cnt; + u32 cnt, max_t, sclk; unsigned long flags; - stampit(); + sclk = get_sclk(); + max_t = -1 / sclk; + cnt = t * sclk; + stamp("maxtimeout=%us newtimeout=%lus (cnt=%#x)", max_t, t, cnt); - cnt = t * get_sclk(); - if (cnt < get_sclk()) { + if (t > max_t) { printk(KERN_WARNING PFX "timeout value is too large\n"); return -EINVAL; } diff --git a/drivers/watchdog/ixp2000_wdt.c b/drivers/watchdog/ixp2000_wdt.c index 4f4b35a20d8..3c79dc58795 100644 --- a/drivers/watchdog/ixp2000_wdt.c +++ b/drivers/watchdog/ixp2000_wdt.c @@ -19,6 +19,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/types.h> +#include <linux/timer.h> #include <linux/kernel.h> #include <linux/fs.h> #include <linux/miscdevice.h> diff --git a/drivers/watchdog/sbc_fitpc2_wdt.c b/drivers/watchdog/sbc_fitpc2_wdt.c index 91430a89107..e6763d2a567 100644 --- a/drivers/watchdog/sbc_fitpc2_wdt.c +++ b/drivers/watchdog/sbc_fitpc2_wdt.c @@ -46,9 +46,9 @@ static DEFINE_SPINLOCK(wdt_lock); static void wdt_send_data(unsigned char command, unsigned char data) { outb(command, COMMAND_PORT); - mdelay(100); + msleep(100); outb(data, DATA_PORT); - mdelay(200); + msleep(200); } static void wdt_enable(void) @@ -202,11 +202,10 @@ static int __init fitpc2_wdt_init(void) { int err; - if (strcmp("SBC-FITPC2", dmi_get_system_info(DMI_BOARD_NAME))) { - pr_info("board name is: %s. Should be SBC-FITPC2\n", - dmi_get_system_info(DMI_BOARD_NAME)); + if (!strstr(dmi_get_system_info(DMI_BOARD_NAME), "SBC-FITPC2")) return -ENODEV; - } + + pr_info("%s found\n", dmi_get_system_info(DMI_BOARD_NAME)); if (!request_region(COMMAND_PORT, 1, WATCHDOG_NAME)) { pr_err("I/O address 0x%04x already in use\n", COMMAND_PORT); |