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Release 4.14 drivers/watchdog/iTCO_wdt.c

Directory: drivers/watchdog
/*
 *      intel TCO Watchdog Driver
 *
 *      (c) Copyright 2006-2011 Wim Van Sebroeck <wim@iguana.be>.
 *
 *      This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 *
 *      Neither Wim Van Sebroeck nor Iguana vzw. admit liability nor
 *      provide warranty for any of this software. This material is
 *      provided "AS-IS" and at no charge.
 *
 *      The TCO watchdog is implemented in the following I/O controller hubs:
 *      (See the intel documentation on http://developer.intel.com.)
 *      document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO)
 *      document number 290687-002, 298242-027: 82801BA (ICH2)
 *      document number 290733-003, 290739-013: 82801CA (ICH3-S)
 *      document number 290716-001, 290718-007: 82801CAM (ICH3-M)
 *      document number 290744-001, 290745-025: 82801DB (ICH4)
 *      document number 252337-001, 252663-008: 82801DBM (ICH4-M)
 *      document number 273599-001, 273645-002: 82801E (C-ICH)
 *      document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R)
 *      document number 300641-004, 300884-013: 6300ESB
 *      document number 301473-002, 301474-026: 82801F (ICH6)
 *      document number 313082-001, 313075-006: 631xESB, 632xESB
 *      document number 307013-003, 307014-024: 82801G (ICH7)
 *      document number 322896-001, 322897-001: NM10
 *      document number 313056-003, 313057-017: 82801H (ICH8)
 *      document number 316972-004, 316973-012: 82801I (ICH9)
 *      document number 319973-002, 319974-002: 82801J (ICH10)
 *      document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH)
 *      document number 320066-003, 320257-008: EP80597 (IICH)
 *      document number 324645-001, 324646-001: Cougar Point (CPT)
 *      document number TBD                   : Patsburg (PBG)
 *      document number TBD                   : DH89xxCC
 *      document number TBD                   : Panther Point
 *      document number TBD                   : Lynx Point
 *      document number TBD                   : Lynx Point-LP
 */

/*
 *      Includes, defines, variables, module parameters, ...
 */


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

/* Module and version information */

#define DRV_NAME	"iTCO_wdt"

#define DRV_VERSION	"1.11"

/* Includes */
#include <linux/acpi.h>			/* For ACPI support */
#include <linux/module.h>		/* For module specific items */
#include <linux/moduleparam.h>		/* For new moduleparam's */
#include <linux/types.h>		/* For standard types (like size_t) */
#include <linux/errno.h>		/* For the -ENODEV/... values */
#include <linux/kernel.h>		/* For printk/panic/... */
#include <linux/watchdog.h>		/* For the watchdog specific items */
#include <linux/init.h>			/* For __init/__exit/... */
#include <linux/fs.h>			/* For file operations */
#include <linux/platform_device.h>	/* For platform_driver framework */
#include <linux/pci.h>			/* For pci functions */
#include <linux/ioport.h>		/* For io-port access */
#include <linux/spinlock.h>		/* For spin_lock/spin_unlock/... */
#include <linux/uaccess.h>		/* For copy_to_user/put_user/... */
#include <linux/io.h>			/* For inb/outb/... */
#include <linux/platform_data/itco_wdt.h>

#include "iTCO_vendor.h"

/* Address definitions for the TCO */
/* TCO base address */

#define TCOBASE(p)	((p)->tco_res->start)
/* SMI Control and Enable Register */

#define SMI_EN(p)	((p)->smi_res->start)


#define TCO_RLD(p)	(TCOBASE(p) + 0x00) 
/* TCO Timer Reload/Curr. Value */

#define TCOv1_TMR(p)	(TCOBASE(p) + 0x01) 
/* TCOv1 Timer Initial Value*/

#define TCO_DAT_IN(p)	(TCOBASE(p) + 0x02) 
/* TCO Data In Register */

#define TCO_DAT_OUT(p)	(TCOBASE(p) + 0x03) 
/* TCO Data Out Register        */

#define TCO1_STS(p)	(TCOBASE(p) + 0x04) 
/* TCO1 Status Register */

#define TCO2_STS(p)	(TCOBASE(p) + 0x06) 
/* TCO2 Status Register */

#define TCO1_CNT(p)	(TCOBASE(p) + 0x08) 
/* TCO1 Control Register        */

#define TCO2_CNT(p)	(TCOBASE(p) + 0x0a) 
/* TCO2 Control Register        */

#define TCOv2_TMR(p)	(TCOBASE(p) + 0x12) 
/* TCOv2 Timer Initial Value*/

/* internal variables */

struct iTCO_wdt_private {
	
struct watchdog_device wddev;

	/* TCO version/generation */
	
unsigned int iTCO_version;
	
struct resource *tco_res;
	
struct resource *smi_res;
	/*
         * NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2),
         * or memory-mapped PMC register bit 4 (TCO version 3).
         */
	
struct resource *gcs_pmc_res;
	
unsigned long __iomem *gcs_pmc;
	/* the lock for io operations */
	
spinlock_t io_lock;
	/* the PCI-device */
	
struct pci_dev *pci_dev;
	/* whether or not the watchdog has been suspended */
	
bool suspended;
	/* no reboot API private data */
	
void *no_reboot_priv;
	/* no reboot update function pointer */
	
int (*update_no_reboot_bit)(void *p, bool set);
};

/* module parameters */

#define WATCHDOG_TIMEOUT 30	
/* 30 sec default heartbeat */

static int heartbeat = WATCHDOG_TIMEOUT;  
/* in seconds */
module_param(heartbeat, int, 0);
MODULE_PARM_DESC(heartbeat, "Watchdog timeout in seconds. "
	"5..76 (TCO v1) or 3..614 (TCO v2), default="
				__MODULE_STRING(WATCHDOG_TIMEOUT) ")");


static bool nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout,
	"Watchdog cannot be stopped once started (default="
				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");


static int turn_SMI_watchdog_clear_off = 1;
module_param(turn_SMI_watchdog_clear_off, int, 0);
MODULE_PARM_DESC(turn_SMI_watchdog_clear_off,
	"Turn off SMI clearing watchdog (depends on TCO-version)(default=1)");

/*
 * Some TCO specific functions
 */

/*
 * The iTCO v1 and v2's internal timer is stored as ticks which decrement
 * every 0.6 seconds.  v3's internal timer is stored as seconds (some
 * datasheets incorrectly state 0.6 seconds).
 */

static inline unsigned int seconds_to_ticks(struct iTCO_wdt_private *p, int secs) { return p->iTCO_version == 3 ? secs : (secs * 10) / 6; }

Contributors

PersonTokensPropCommitsCommitProp
Wim Van Sebroeck1854.55%133.33%
Peter Tyser824.24%133.33%
Guenter Roeck721.21%133.33%
Total33100.00%3100.00%


static inline unsigned int ticks_to_seconds(struct iTCO_wdt_private *p, int ticks) { return p->iTCO_version == 3 ? ticks : (ticks * 6) / 10; }

Contributors

PersonTokensPropCommitsCommitProp
Peter Tyser2678.79%150.00%
Guenter Roeck721.21%150.00%
Total33100.00%2100.00%


static inline u32 no_reboot_bit(struct iTCO_wdt_private *p) { u32 enable_bit; switch (p->iTCO_version) { case 5: case 3: enable_bit = 0x00000010; break; case 2: enable_bit = 0x00000020; break; case 4: case 1: default: enable_bit = 0x00000002; break; } return enable_bit; }

Contributors

PersonTokensPropCommitsCommitProp
Matt Fleming3357.89%120.00%
Wim Van Sebroeck814.04%120.00%
Peter Tyser712.28%120.00%
Guenter Roeck610.53%120.00%
Jonathan Yong35.26%120.00%
Total57100.00%5100.00%


static int update_no_reboot_bit_def(void *priv, bool set) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kuppuswamy Sathyanarayanan1487.50%150.00%
Matt Fleming212.50%150.00%
Total16100.00%2100.00%


static int update_no_reboot_bit_pci(void *priv, bool set) { struct iTCO_wdt_private *p = priv; u32 val32 = 0, newval32 = 0; pci_read_config_dword(p->pci_dev, 0xd4, &val32); if (set) val32 |= no_reboot_bit(p); else val32 &= ~no_reboot_bit(p); pci_write_config_dword(p->pci_dev, 0xd4, val32); pci_read_config_dword(p->pci_dev, 0xd4, &newval32); /* make sure the update is successful */ if (val32 != newval32) return -EIO; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kuppuswamy Sathyanarayanan5455.10%120.00%
Wim Van Sebroeck2222.45%120.00%
Guenter Roeck1717.35%240.00%
Matt Fleming55.10%120.00%
Total98100.00%5100.00%


static int update_no_reboot_bit_mem(void *priv, bool set) { struct iTCO_wdt_private *p = priv; u32 val32 = 0, newval32 = 0; val32 = readl(p->gcs_pmc); if (set) val32 |= no_reboot_bit(p); else val32 &= ~no_reboot_bit(p); writel(val32, p->gcs_pmc); newval32 = readl(p->gcs_pmc); /* make sure the update is successful */ if (val32 != newval32) return -EIO; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kuppuswamy Sathyanarayanan4550.00%120.00%
Wim Van Sebroeck2932.22%120.00%
Guenter Roeck1011.11%120.00%
Peter Tyser33.33%120.00%
Matt Fleming33.33%120.00%
Total90100.00%5100.00%


static void iTCO_wdt_no_reboot_bit_setup(struct iTCO_wdt_private *p, struct itco_wdt_platform_data *pdata) { if (pdata->update_no_reboot_bit) { p->update_no_reboot_bit = pdata->update_no_reboot_bit; p->no_reboot_priv = pdata->no_reboot_priv; return; } if (p->iTCO_version >= 2) p->update_no_reboot_bit = update_no_reboot_bit_mem; else if (p->iTCO_version == 1) p->update_no_reboot_bit = update_no_reboot_bit_pci; else p->update_no_reboot_bit = update_no_reboot_bit_def; p->no_reboot_priv = p; }

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PersonTokensPropCommitsCommitProp
Kuppuswamy Sathyanarayanan6780.72%240.00%
Guenter Roeck89.64%120.00%
Wim Van Sebroeck78.43%120.00%
Matt Fleming11.20%120.00%
Total83100.00%5100.00%


static int iTCO_wdt_start(struct watchdog_device *wd_dev) { struct iTCO_wdt_private *p = watchdog_get_drvdata(wd_dev); unsigned int val; spin_lock(&p->io_lock); iTCO_vendor_pre_start(p->smi_res, wd_dev->timeout); /* disable chipset's NO_REBOOT bit */ if (p->update_no_reboot_bit(p->no_reboot_priv, false)) { spin_unlock(&p->io_lock); pr_err("failed to reset NO_REBOOT flag, reboot disabled by hardware/BIOS\n"); return -EIO; } /* Force the timer to its reload value by writing to the TCO_RLD register */ if (p->iTCO_version >= 2) outw(0x01, TCO_RLD(p)); else if (p->iTCO_version == 1) outb(0x01, TCO_RLD(p)); /* Bit 11: TCO Timer Halt -> 0 = The TCO timer is enabled to count */ val = inw(TCO1_CNT(p)); val &= 0xf7ff; outw(val, TCO1_CNT(p)); val = inw(TCO1_CNT(p)); spin_unlock(&p->io_lock); if (val & 0x0800) return -1; return 0; }

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PersonTokensPropCommitsCommitProp
Wim Van Sebroeck11366.08%436.36%
Guenter Roeck4023.39%19.09%
Kuppuswamy Sathyanarayanan74.09%218.18%
Roel Kluin63.51%19.09%
Joe Perches31.75%19.09%
Aaron Sierra10.58%19.09%
Peter Tyser10.58%19.09%
Total171100.00%11100.00%


static int iTCO_wdt_stop(struct watchdog_device *wd_dev) { struct iTCO_wdt_private *p = watchdog_get_drvdata(wd_dev); unsigned int val; spin_lock(&p->io_lock); iTCO_vendor_pre_stop(p->smi_res); /* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */ val = inw(TCO1_CNT(p)); val |= 0x0800; outw(val, TCO1_CNT(p)); val = inw(TCO1_CNT(p)); /* Set the NO_REBOOT bit to prevent later reboots, just for sure */ p->update_no_reboot_bit(p->no_reboot_priv, true); spin_unlock(&p->io_lock); if ((val & 0x0800) == 0) return -1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Wim Van Sebroeck7667.86%342.86%
Guenter Roeck2825.00%114.29%
Kuppuswamy Sathyanarayanan76.25%228.57%
Aaron Sierra10.89%114.29%
Total112100.00%7100.00%


static int iTCO_wdt_ping(struct watchdog_device *wd_dev) { struct iTCO_wdt_private *p = watchdog_get_drvdata(wd_dev); spin_lock(&p->io_lock); iTCO_vendor_pre_keepalive(p->smi_res, wd_dev->timeout); /* Reload the timer by writing to the TCO Timer Counter register */ if (p->iTCO_version >= 2) { outw(0x01, TCO_RLD(p)); } else if (p->iTCO_version == 1) { /* Reset the timeout status bit so that the timer * needs to count down twice again before rebooting */ outw(0x0008, TCO1_STS(p)); /* write 1 to clear bit */ outb(0x01, TCO_RLD(p)); } spin_unlock(&p->io_lock); return 0; }

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PersonTokensPropCommitsCommitProp
Wim Van Sebroeck7773.33%457.14%
Guenter Roeck2624.76%114.29%
Aaron Sierra10.95%114.29%
Peter Tyser10.95%114.29%
Total105100.00%7100.00%


static int iTCO_wdt_set_timeout(struct watchdog_device *wd_dev, unsigned int t) { struct iTCO_wdt_private *p = watchdog_get_drvdata(wd_dev); unsigned int val16; unsigned char val8; unsigned int tmrval; tmrval = seconds_to_ticks(p, t); /* For TCO v1 the timer counts down twice before rebooting */ if (p->iTCO_version == 1) tmrval /= 2; /* from the specs: */ /* "Values of 0h-3h are ignored and should not be attempted" */ if (tmrval < 0x04) return -EINVAL; if ((p->iTCO_version >= 2 && tmrval > 0x3ff) || (p->iTCO_version == 1 && tmrval > 0x03f)) return -EINVAL; iTCO_vendor_pre_set_heartbeat(tmrval); /* Write new heartbeat to watchdog */ if (p->iTCO_version >= 2) { spin_lock(&p->io_lock); val16 = inw(TCOv2_TMR(p)); val16 &= 0xfc00; val16 |= tmrval; outw(val16, TCOv2_TMR(p)); val16 = inw(TCOv2_TMR(p)); spin_unlock(&p->io_lock); if ((val16 & 0x3ff) != tmrval) return -EINVAL; } else if (p->iTCO_version == 1) { spin_lock(&p->io_lock); val8 = inb(TCOv1_TMR(p)); val8 &= 0xc0; val8 |= (tmrval & 0xff); outb(val8, TCOv1_TMR(p)); val8 = inb(TCOv1_TMR(p)); spin_unlock(&p->io_lock); if ((val8 & 0x3f) != tmrval) return -EINVAL; } wd_dev->timeout = t; return 0; }

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Wim Van Sebroeck22781.95%457.14%
Guenter Roeck4616.61%114.29%
Peter Tyser20.72%114.29%
Pádraig Brady20.72%114.29%
Total277100.00%7100.00%


static unsigned int iTCO_wdt_get_timeleft(struct watchdog_device *wd_dev) { struct iTCO_wdt_private *p = watchdog_get_drvdata(wd_dev); unsigned int val16; unsigned char val8; unsigned int time_left = 0; /* read the TCO Timer */ if (p->iTCO_version >= 2) { spin_lock(&p->io_lock); val16 = inw(TCO_RLD(p)); val16 &= 0x3ff; spin_unlock(&p->io_lock); time_left = ticks_to_seconds(p, val16); } else if (p->iTCO_version == 1) { spin_lock(&p->io_lock); val8 = inb(TCO_RLD(p)); val8 &= 0x3f; if (!(inw(TCO1_STS(p)) & 0x0008)) val8 += (inb(TCOv1_TMR(p)) & 0x3f); spin_unlock(&p->io_lock); time_left = ticks_to_seconds(p, val8); } return time_left; }

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PersonTokensPropCommitsCommitProp
Wim Van Sebroeck9958.93%233.33%
Guenter Roeck3822.62%116.67%
Pádraig Brady2313.69%116.67%
Peter Tyser74.17%116.67%
Jeff Garzik10.60%116.67%
Total168100.00%6100.00%

/* * Kernel Interfaces */ static const struct watchdog_info ident = { .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, .firmware_version = 0, .identity = DRV_NAME, }; static const struct watchdog_ops iTCO_wdt_ops = { .owner = THIS_MODULE, .start = iTCO_wdt_start, .stop = iTCO_wdt_stop, .ping = iTCO_wdt_ping, .set_timeout = iTCO_wdt_set_timeout, .get_timeleft = iTCO_wdt_get_timeleft, }; /* * Init & exit routines */
static int iTCO_wdt_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct itco_wdt_platform_data *pdata = dev_get_platdata(dev); struct iTCO_wdt_private *p; unsigned long val32; int ret; if (!pdata) return -ENODEV; p = devm_kzalloc(dev, sizeof(*p), GFP_KERNEL); if (!p) return -ENOMEM; spin_lock_init(&p->io_lock); p->tco_res = platform_get_resource(pdev, IORESOURCE_IO, ICH_RES_IO_TCO); if (!p->tco_res) return -ENODEV; p->smi_res = platform_get_resource(pdev, IORESOURCE_IO, ICH_RES_IO_SMI); if (!p->smi_res) return -ENODEV; p->iTCO_version = pdata->version; p->pci_dev = to_pci_dev(dev->parent); iTCO_wdt_no_reboot_bit_setup(p, pdata); /* * Get the Memory-Mapped GCS or PMC register, we need it for the * NO_REBOOT flag (TCO v2 and v3). */ if (p->iTCO_version >= 2 && !pdata->update_no_reboot_bit) { p->gcs_pmc_res = platform_get_resource(pdev, IORESOURCE_MEM, ICH_RES_MEM_GCS_PMC); p->gcs_pmc = devm_ioremap_resource(dev, p->gcs_pmc_res); if (IS_ERR(p->gcs_pmc)) return PTR_ERR(p->gcs_pmc); } /* Check chipset's NO_REBOOT bit */ if (p->update_no_reboot_bit(p->no_reboot_priv, false) && iTCO_vendor_check_noreboot_on()) { pr_info("unable to reset NO_REBOOT flag, device disabled by hardware/BIOS\n"); return -ENODEV; /* Cannot reset NO_REBOOT bit */ } /* Set the NO_REBOOT bit to prevent later reboots, just for sure */ p->update_no_reboot_bit(p->no_reboot_priv, true); /* The TCO logic uses the TCO_EN bit in the SMI_EN register */ if (!devm_request_region(dev, p->smi_res->start, resource_size(p->smi_res), pdev->name)) { pr_err("I/O address 0x%04llx already in use, device disabled\n", (u64)SMI_EN(p)); return -EBUSY; } if (turn_SMI_watchdog_clear_off >= p->iTCO_version) { /* * Bit 13: TCO_EN -> 0 * Disables TCO logic generating an SMI# */ val32 = inl(SMI_EN(p)); val32 &= 0xffffdfff; /* Turn off SMI clearing watchdog */ outl(val32, SMI_EN(p)); } if (!devm_request_region(dev, p->tco_res->start, resource_size(p->tco_res), pdev->name)) { pr_err("I/O address 0x%04llx already in use, device disabled\n", (u64)TCOBASE(p)); return -EBUSY; } pr_info("Found a %s TCO device (Version=%d, TCOBASE=0x%04llx)\n", pdata->name, pdata->version, (u64)TCOBASE(p)); /* Clear out the (probably old) status */ switch (p->iTCO_version) { case 5: case 4: outw(0x0008, TCO1_STS(p)); /* Clear the Time Out Status bit */ outw(0x0002, TCO2_STS(p)); /* Clear SECOND_TO_STS bit */ break; case 3: outl(0x20008, TCO1_STS(p)); break; case 2: case 1: default: outw(0x0008, TCO1_STS(p)); /* Clear the Time Out Status bit */ outw(0x0002, TCO2_STS(p)); /* Clear SECOND_TO_STS bit */ outw(0x0004, TCO2_STS(p)); /* Clear BOOT_STS bit */ break; } p->wddev.info = &ident, p->wddev.ops = &iTCO_wdt_ops, p->wddev.bootstatus = 0; p->wddev.timeout = WATCHDOG_TIMEOUT; watchdog_set_nowayout(&p->wddev, nowayout); p->wddev.parent = dev; watchdog_set_drvdata(&p->wddev, p); platform_set_drvdata(pdev, p); /* Make sure the watchdog is not running */ iTCO_wdt_stop(&p->wddev); /* Check that the heartbeat value is within it's range; if not reset to the default */ if (iTCO_wdt_set_timeout(&p->wddev, heartbeat)) { iTCO_wdt_set_timeout(&p->wddev, WATCHDOG_TIMEOUT); pr_info("timeout value out of range, using %d\n", WATCHDOG_TIMEOUT); } watchdog_stop_on_reboot(&p->wddev); ret = devm_watchdog_register_device(dev, &p->wddev); if (ret != 0) { pr_err("cannot register watchdog device (err=%d)\n", ret); return ret; } pr_info("initialized. heartbeat=%d sec (nowayout=%d)\n", heartbeat, nowayout); return 0; }

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PersonTokensPropCommitsCommitProp
Guenter Roeck23936.38%415.38%
Wim Van Sebroeck20831.66%934.62%
Aaron Sierra7511.42%13.85%
Matt Fleming416.24%27.69%
Kuppuswamy Sathyanarayanan263.96%27.69%
Joe Perches253.81%13.85%
Peter Tyser192.89%13.85%
Randy Dunlap91.37%13.85%
Pádraig Brady71.07%13.85%
Jingoo Han30.46%13.85%
Jonathan Yong30.46%13.85%
Denis V. Lunev10.15%13.85%
Alan Cox10.15%13.85%
Total657100.00%26100.00%


static int iTCO_wdt_remove(struct platform_device *pdev) { struct iTCO_wdt_private *p = platform_get_drvdata(pdev); /* Stop the timer before we leave */ if (!nowayout) iTCO_wdt_stop(&p->wddev); return 0; }

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Guenter Roeck2155.26%360.00%
Wim Van Sebroeck1744.74%240.00%
Total38100.00%5100.00%

#ifdef CONFIG_PM_SLEEP /* * Suspend-to-idle requires this, because it stops the ticks and timekeeping, so * the watchdog cannot be pinged while in that state. In ACPI sleep states the * watchdog is stopped by the platform firmware. */ #ifdef CONFIG_ACPI
static inline bool need_suspend(void) { return acpi_target_system_state() == ACPI_STATE_S0; }

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Rafael J. Wysocki15100.00%1100.00%
Total15100.00%1100.00%

#else
static inline bool need_suspend(void) { return true; }

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Rafael J. Wysocki12100.00%1100.00%
Total12100.00%1100.00%

#endif
static int iTCO_wdt_suspend_noirq(struct device *dev) { struct iTCO_wdt_private *p = dev_get_drvdata(dev); int ret = 0; p->suspended = false; if (watchdog_active(&p->wddev) && need_suspend()) { ret = iTCO_wdt_stop(&p->wddev); if (!ret) p->suspended = true; } return ret; }

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Rafael J. Wysocki5171.83%150.00%
Guenter Roeck2028.17%150.00%
Total71100.00%2100.00%


static int iTCO_wdt_resume_noirq(struct device *dev) { struct iTCO_wdt_private *p = dev_get_drvdata(dev); if (p->suspended) iTCO_wdt_start(&p->wddev); return 0; }

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PersonTokensPropCommitsCommitProp
Rafael J. Wysocki2360.53%150.00%
Guenter Roeck1539.47%150.00%
Total38100.00%2100.00%

static const struct dev_pm_ops iTCO_wdt_pm = { .suspend_noirq = iTCO_wdt_suspend_noirq, .resume_noirq = iTCO_wdt_resume_noirq, }; #define ITCO_WDT_PM_OPS (&iTCO_wdt_pm) #else #define ITCO_WDT_PM_OPS NULL #endif /* CONFIG_PM_SLEEP */ static struct platform_driver iTCO_wdt_driver = { .probe = iTCO_wdt_probe, .remove = iTCO_wdt_remove, .driver = { .name = DRV_NAME, .pm = ITCO_WDT_PM_OPS, }, };
static int __init iTCO_wdt_init_module(void) { pr_info("Intel TCO WatchDog Timer Driver v%s\n", DRV_VERSION); return platform_driver_register(&iTCO_wdt_driver); }

Contributors

PersonTokensPropCommitsCommitProp
Wim Van Sebroeck1982.61%250.00%
Joe Perches313.04%125.00%
Guenter Roeck14.35%125.00%
Total23100.00%4100.00%


static void __exit iTCO_wdt_cleanup_module(void) { platform_driver_unregister(&iTCO_wdt_driver); pr_info("Watchdog Module Unloaded\n"); }

Contributors

PersonTokensPropCommitsCommitProp
Wim Van Sebroeck1785.00%266.67%
Joe Perches315.00%133.33%
Total20100.00%3100.00%

module_init(iTCO_wdt_init_module); module_exit(iTCO_wdt_cleanup_module); MODULE_AUTHOR("Wim Van Sebroeck <wim@iguana.be>"); MODULE_DESCRIPTION("Intel TCO WatchDog Timer Driver"); MODULE_VERSION(DRV_VERSION); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" DRV_NAME);

Overall Contributors

PersonTokensPropCommitsCommitProp
Wim Van Sebroeck124747.50%1435.90%
Guenter Roeck58222.17%512.82%
Kuppuswamy Sathyanarayanan2409.14%25.13%
Rafael J. Wysocki1555.90%12.56%
Aaron Sierra1154.38%12.56%
Matt Fleming863.28%25.13%
Peter Tyser793.01%12.56%
Joe Perches411.56%12.56%
Pádraig Brady341.30%12.56%
Alan Cox100.38%12.56%
Randy Dunlap90.34%12.56%
Roel Kluin60.23%12.56%
Jonathan Yong60.23%12.56%
Jan Beulich60.23%12.56%
Jingoo Han30.11%12.56%
Jeff Garzik20.08%12.56%
Arjan van de Ven10.04%12.56%
James Ralston10.04%12.56%
Denis V. Lunev10.04%12.56%
Julia Lawall10.04%12.56%
Total2625100.00%39100.00%
Directory: drivers/watchdog
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