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linux/drivers/watchdog
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Boris BREZILLON 5161b31dc3 watchdog: at91sam9_wdt: better watchdog support 
The at91sam9 watchdog timer can only be configured once, and the current
implementation tries to configure it in a static way:
- 2 seconds timeout
- wdt restart every 500ms

If the timer has already been configured with different values, it returns an
error and do not create any watchdog device.

This is not critical if the watchdog is disabled, but if it has been enabled with
different timeout values it will lead to a SoC reset.

This patch series tries to address this issue by adapting the heartbeat value
according the WDT timer config:
- it first tries to configure the timer as requested.
- if it fails it fallbacks to the current config, adapting its heartbeat timer
to the needs

This patch series also move to a dynamically allocated at91wdt device instead
of the static instance.

It adds a new at91 wdt type: software. This new type make use of the at91 wdt
interrupt to trigger a software reboot.

Finally it adds several properties to the device tree bindings.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:28:37 +01:00
..
acquirewdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
advantechwdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
alim1535_wdt.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
alim7101_wdt.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
ar7_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
at32ap700x_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
at91rm9200_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
at91sam9_wdt.c watchdog: at91sam9_wdt: better watchdog support 2014-01-28 21:28:37 +01:00
at91sam9_wdt.h
ath79_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
bcm47xx_wdt.c
bcm63xx_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
bcm2835_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
bcm_kona_wdt.c watchdog: bcm281xx: Debugfs support 2014-01-28 21:17:53 +01:00
bfin_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
booke_wdt.c
coh901327_wdt.c
cpu5wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
cpwd.c
da9052_wdt.c
da9055_wdt.c
davinci_wdt.c watchdog: davinci: reuse driver for keystone arch 2014-01-28 21:20:05 +01:00
dw_wdt.c watchdog: dw_wdt: remove build dependencies 2014-01-28 21:25:46 +01:00
ep93xx_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
eurotechwdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
f71808e_wdt.c
gef_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
geodewdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
gpio_wdt.c watchdog: GPIO-controlled watchdog 2014-01-28 21:21:02 +01:00
hpwdt.c watchdog: hpwdt patch to display informative string 2014-01-28 21:26:10 +01:00
i6300esb.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
ib700wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
ibmasr.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
ie6xx_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
imx2_wdt.c watchdog: imx2_wdt: disable watchdog timer during low power mode 2014-01-28 21:25:20 +01:00
indydog.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
intel_scu_watchdog.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
intel_scu_watchdog.h
iop_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
it87_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
it8712f_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
iTCO_vendor.h
iTCO_vendor_support.c
iTCO_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
ixp4xx_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
jz4740_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
Kconfig watchdog: sp805_wdt depends also on ARM64 2014-01-28 21:27:52 +01:00
kempld_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
ks8695_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
lantiq_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
m54xx_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
machzwd.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
Makefile watchdog: GPIO-controlled watchdog 2014-01-28 21:21:02 +01:00
max63xx_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
mena21_wdt.c
mixcomwd.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
moxart_wdt.c watchdog: mach-moxart: add restart handler 2014-01-28 21:27:32 +01:00
mpc8xxx_wdt.c watchdog: mpc8xxx_wdt convert to watchdog core 2014-01-28 21:27:08 +01:00
mtx-1_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
mv64x60_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
nuc900_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
nv_tco.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
nv_tco.h
octeon-wdt-main.c
octeon-wdt-nmi.S
of_xilinx_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
omap_wdt.c watchdog: omap_wdt: raw read and write endian fix 2013-11-17 19:42:38 +01:00
omap_wdt.h
orion_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
pc87413_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
pcwd.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
pcwd_pci.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
pcwd_usb.c Watchdog: pcwd_usb: remove CONFIG_USB_DEBUG usage 2014-01-07 16:15:39 -08:00
pika_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
pnx833x_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
pnx4008_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
rc32434_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
rdc321x_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
retu_wdt.c
riowd.c
rt2880_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
s3c2410_wdt.c watchdog: s3c2410_wdt: Report when the watchdog reset the system 2014-01-28 21:24:33 +01:00
sa1100_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sb_wdog.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sbc60xxwdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sbc7240_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sbc8360.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sbc_epx_c3.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sbc_fitpc2_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sc520_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
sc1200wdt.c sc1200_wdt: Fix oops 2013-12-10 08:48:15 +01:00
sch311x_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
scx200_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
shwdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
sirfsoc_wdt.c watchdog: sirf: Remove redundant of_match_ptr helper 2014-01-28 21:26:31 +01:00
smsc37b787_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
softdog.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
sp805_wdt.c watchdog: sp805_wdt: Remove unnecessary amba_set_drvdata() 2013-11-17 19:37:31 +01:00
sp5100_tco.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
sp5100_tco.h
stmp3xxx_rtc_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
sunxi_wdt.c watchdog: Remove redundant of_match_ptr 2013-11-17 19:37:11 +01:00
ts72xx_wdt.c watchdog: ts72xx_wdt: Propagate return value from timeout_to_regval 2013-11-17 19:38:02 +01:00
twl4030_wdt.c
txx9wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
ux500_wdt.c watchdog: Drop unnecessary include of miscdevice.h 2013-12-10 08:48:09 +01:00
via_wdt.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
w83627hf_wdt.c watchdog: w83627hf: Use helper functions to access superio registers 2013-11-18 21:34:19 +01:00
w83697hf_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
w83697ug_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
w83877f_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
w83977f_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
wafer5823wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
watchdog_core.c watchdog: core: Make dt "timeout-sec" property work on drivers w/out min/max 2014-01-28 19:07:56 +01:00
watchdog_core.h
watchdog_dev.c
wd501p.h
wdrtas.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
wdt285.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
wdt977.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00
wdt_pci.c watchdog: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-28 19:07:07 +01:00
wm831x_wdt.c watchdog: use dev_get_platdata() 2013-11-17 19:34:20 +01:00
wm8350_wdt.c
xen_wdt.c watchdog: Get rid of MODULE_ALIAS_MISCDEV statements 2013-11-17 19:38:13 +01:00