diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-04 11:35:03 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-04 11:35:03 -0700 |
commit | 8bd8fd0a29bfd5ad8e1976edd8c4c40cdb39aa4f (patch) | |
tree | 1d7b2e30083194cc4223d9b150583fc2924bd032 /drivers/watchdog | |
parent | 352712274507645b6f82b8763977ad87321919a3 (diff) | |
parent | 5a688c455066c21c133bc8ffa7b11f8c66b7fe0b (diff) | |
download | linux-8bd8fd0a29bfd5ad8e1976edd8c4c40cdb39aa4f.tar.bz2 |
Merge tag 'mfd-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Device Support:
- New Clocksource driver from ST
- New MFD/ACPI/DMA drivers for Intel's Sunrisepoint PCH based platforms
- Add support for Arizona WM8998 and WM1814
- Add support for Dialog Semi DA9062 and DA9063
- Add support for Kontron COMe-bBL6 and COMe-cBW6
- Add support for X-Powers AXP152
- Add support for Atmel, many
- Add support for STMPE, many
- Add support for USB in X-Powers AXP22X
Core Frameworks:
- New Base API to traverse devices and their children in reverse order
Bug Fixes:
- Fix race between runtime-suspend and IRQs
- Obtain platform data form more reliable source
Fix-ups:
- Constifying things
- Variable signage changes
- Kconfig depends|selects changes
- Make use of BIT() macro
- Do not supply .owner attribute in *_driver structures
- MAINTAINERS entries
- Stop using set_irq_flags()
- Start using irq_set_chained_handler_and_data()
- Export DT device ID structures"
* tag 'mfd-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (69 commits)
mfd: jz4740-adc: Init mask cache in generic IRQ chip
mfd: cros_ec: spi: Add OF match table
mfd: stmpe: Add OF match table
mfd: max77686: Split out regulator part from the DT binding
mfd: Add DT binding for Maxim MAX77802 IC
mfd: max77686: Use a generic name for the PMIC node in the example
mfd: max77686: Don't suggest in binding to use a deprecated property
mfd: Add MFD_CROS_EC dependencies
mfd: cros_ec: Remove CROS_EC_PROTO dependency for SPI and I2C drivers
mfd: axp20x: Add a cell for the usb power_supply part of the axp20x PMICs
mfd: axp20x: Add missing registers, and mark more registers volatile
mfd: arizona: Fixup some formatting/white space errors
mfd: wm8994: Fix NULL pointer exception on missing pdata
of: Add vendor prefix for Nuvoton
mfd: mt6397: Implement wake handler and suspend/resume to handle wake up event
mfd: atmel-hlcdc: Add support for new SoCs
mfd: Export OF module alias information in missing drivers
mfd: stw481x: Export I2C module alias information
mfd: da9062: Support for the DA9063 OnKey in the DA9062 core
mfd: max899x: Avoid redundant irq_data lookup
...
Diffstat (limited to 'drivers/watchdog')
-rw-r--r-- | drivers/watchdog/Kconfig | 3 | ||||
-rw-r--r-- | drivers/watchdog/iTCO_wdt.c | 82 |
2 files changed, 51 insertions, 34 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 241fafde42cb..55c4b5b0a317 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -797,7 +797,8 @@ config ITCO_WDT tristate "Intel TCO Timer/Watchdog" depends on (X86 || IA64) && PCI select WATCHDOG_CORE - select LPC_ICH + select LPC_ICH if !EXPERT + select I2C_I801 if !EXPERT ---help--- Hardware driver for the intel TCO timer based watchdog devices. These drivers are included in the Intel 82801 I/O Controller diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c index 3c3fd417ddeb..0acc6c5f729d 100644 --- a/drivers/watchdog/iTCO_wdt.c +++ b/drivers/watchdog/iTCO_wdt.c @@ -66,8 +66,7 @@ #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/mfd/core.h> -#include <linux/mfd/lpc_ich.h> +#include <linux/platform_data/itco_wdt.h> #include "iTCO_vendor.h" @@ -146,59 +145,67 @@ static inline unsigned int ticks_to_seconds(int ticks) return iTCO_wdt_private.iTCO_version == 3 ? ticks : (ticks * 6) / 10; } +static inline u32 no_reboot_bit(void) +{ + u32 enable_bit; + + switch (iTCO_wdt_private.iTCO_version) { + case 3: + enable_bit = 0x00000010; + break; + case 2: + enable_bit = 0x00000020; + break; + case 4: + case 1: + default: + enable_bit = 0x00000002; + break; + } + + return enable_bit; +} + static void iTCO_wdt_set_NO_REBOOT_bit(void) { u32 val32; /* Set the NO_REBOOT bit: this disables reboots */ - if (iTCO_wdt_private.iTCO_version == 3) { - val32 = readl(iTCO_wdt_private.gcs_pmc); - val32 |= 0x00000010; - writel(val32, iTCO_wdt_private.gcs_pmc); - } else if (iTCO_wdt_private.iTCO_version == 2) { + if (iTCO_wdt_private.iTCO_version >= 2) { val32 = readl(iTCO_wdt_private.gcs_pmc); - val32 |= 0x00000020; + val32 |= no_reboot_bit(); writel(val32, iTCO_wdt_private.gcs_pmc); } else if (iTCO_wdt_private.iTCO_version == 1) { pci_read_config_dword(iTCO_wdt_private.pdev, 0xd4, &val32); - val32 |= 0x00000002; + val32 |= no_reboot_bit(); pci_write_config_dword(iTCO_wdt_private.pdev, 0xd4, val32); } } static int iTCO_wdt_unset_NO_REBOOT_bit(void) { - int ret = 0; - u32 val32; + u32 enable_bit = no_reboot_bit(); + u32 val32 = 0; /* Unset the NO_REBOOT bit: this enables reboots */ - if (iTCO_wdt_private.iTCO_version == 3) { - val32 = readl(iTCO_wdt_private.gcs_pmc); - val32 &= 0xffffffef; - writel(val32, iTCO_wdt_private.gcs_pmc); - - val32 = readl(iTCO_wdt_private.gcs_pmc); - if (val32 & 0x00000010) - ret = -EIO; - } else if (iTCO_wdt_private.iTCO_version == 2) { + if (iTCO_wdt_private.iTCO_version >= 2) { val32 = readl(iTCO_wdt_private.gcs_pmc); - val32 &= 0xffffffdf; + val32 &= ~enable_bit; writel(val32, iTCO_wdt_private.gcs_pmc); val32 = readl(iTCO_wdt_private.gcs_pmc); - if (val32 & 0x00000020) - ret = -EIO; } else if (iTCO_wdt_private.iTCO_version == 1) { pci_read_config_dword(iTCO_wdt_private.pdev, 0xd4, &val32); - val32 &= 0xfffffffd; + val32 &= ~enable_bit; pci_write_config_dword(iTCO_wdt_private.pdev, 0xd4, val32); pci_read_config_dword(iTCO_wdt_private.pdev, 0xd4, &val32); - if (val32 & 0x00000002) - ret = -EIO; } - return ret; /* returns: 0 = OK, -EIO = Error */ + if (val32 & enable_bit) + return -EIO; + + return 0; } static int iTCO_wdt_start(struct watchdog_device *wd_dev) @@ -418,9 +425,9 @@ static int iTCO_wdt_probe(struct platform_device *dev) { int ret = -ENODEV; unsigned long val32; - struct lpc_ich_info *ich_info = dev_get_platdata(&dev->dev); + struct itco_wdt_platform_data *pdata = dev_get_platdata(&dev->dev); - if (!ich_info) + if (!pdata) goto out; spin_lock_init(&iTCO_wdt_private.io_lock); @@ -435,7 +442,7 @@ static int iTCO_wdt_probe(struct platform_device *dev) if (!iTCO_wdt_private.smi_res) goto out; - iTCO_wdt_private.iTCO_version = ich_info->iTCO_version; + iTCO_wdt_private.iTCO_version = pdata->version; iTCO_wdt_private.dev = dev; iTCO_wdt_private.pdev = to_pci_dev(dev->dev.parent); @@ -501,15 +508,24 @@ static int iTCO_wdt_probe(struct platform_device *dev) } pr_info("Found a %s TCO device (Version=%d, TCOBASE=0x%04llx)\n", - ich_info->name, ich_info->iTCO_version, (u64)TCOBASE); + pdata->name, pdata->version, (u64)TCOBASE); /* Clear out the (probably old) status */ - if (iTCO_wdt_private.iTCO_version == 3) { + switch (iTCO_wdt_private.iTCO_version) { + case 4: + outw(0x0008, TCO1_STS); /* Clear the Time Out Status bit */ + outw(0x0002, TCO2_STS); /* Clear SECOND_TO_STS bit */ + break; + case 3: outl(0x20008, TCO1_STS); - } else { + break; + case 2: + case 1: + default: outw(0x0008, TCO1_STS); /* Clear the Time Out Status bit */ outw(0x0002, TCO2_STS); /* Clear SECOND_TO_STS bit */ outw(0x0004, TCO2_STS); /* Clear BOOT_STS bit */ + break; } iTCO_wdt_watchdog_dev.bootstatus = 0; |