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Paul Walmsley 129f557723 watchdog: OMAP: use standard GETBOOTSTATUS interface; use platform_data fn ptr 
Previously the OMAP watchdog driver used a non-standard way to report
the chip reset source via the GETBOOTSTATUS ioctl.  This patch
converts the driver to use the standard WDIOF_* flags for this
purpose.

This patch may break existing userspace code that uses the existing
non-standard data format returned by the OMAP watchdog driver's
GETBOOTSTATUS ioctl.  To fetch detailed reset source information,
userspace code will need to retrieve it directly from the CGRM or PRM
drivers when those are completed.

Previously, to fetch the reset source, the driver either read a
register outside the watchdog IP block (OMAP1), or called a function
exported directly from arch/arm/mach-omap2.  Both approaches are
broken.  This patch also converts the driver to use a platform_data
function pointer.  This approach is temporary, and is due to the lack
of drivers for the OMAP16xx+ Clock Generation and Reset Management IP
block and the OMAP2+ Power and Reset Management IP block.  Once
drivers are available for those IP blocks, the watchdog driver can be
converted to call exported functions from those drivers directly.
At that point, the platform_data function pointer can be removed.

In the short term, this patch is needed to allow the PRM code to be
removed from arch/arm/mach-omap2 (it is being moved to a driver).

This version integrates a fix from Jon Hunter <jon-hunter@ti.com>
that avoids a NULL pointer dereference in a DT-only boot, and integrates
a patch commit message fix from Felipe Balbi <balbi@ti.com>.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
[paul@pwsan.com: integrated pdata fix from Jon Hunter]
Cc: Jon Hunter <jon-hunter@ti.com>
[paul@pwsan.com: integrated changelog fix from Felipe Balbi]
Cc: Felipe Balbi <balbi@ti.com>
2012-11-08 12:33:07 -07:00
..
accessibility
acpi ACPI: Reorder IPMI driver before any other ACPI drivers 2012-10-16 18:07:12 -07:00
amba
ata Merge branch 'samsung_platform_data' into staging/for_v3.7 2012-10-05 22:32:05 -03:00
atm sections: fix section conflicts in drivers/atm 2012-10-06 03:04:40 +09:00
auxdisplay
base memory-hotplug: update memory block's state and notify userspace 2012-10-09 16:23:02 +09:00
bcma Merge commit '371a00448f95adaa612cf1a0b31a11e7093bc706' of 'git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git' 2012-09-29 15:37:49 +01:00
block Merge branch 'for-3.7/core' of git://git.kernel.dk/linux-block 2012-10-11 09:04:23 +09:00
bluetooth TTY: hci_ldisc, remove invalid check in open 2012-10-22 16:50:53 -07:00
bus drivers: bus: omap_l3: fixup merge conflict resolution 2012-10-01 19:39:48 -07:00
cdrom
char This is the first set of omap cleanup patches for v3.8 merge 2012-10-24 13:25:44 -07:00
clk spi: Updates for v3.7 2012-10-02 17:26:42 -07:00
clocksource Power management updates for 3.7-rc1 2012-10-02 18:32:35 -07:00
connector Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-10-02 13:38:27 -07:00
cpufreq cpufreq: OMAP: use get_cpu_device() instead of omap_device API 2012-10-08 14:58:56 -07:00
cpuidle ACPI idle, CPU hotplug: Fix NULL pointer dereference during hotplug 2012-10-08 22:52:54 -04:00
crypto Merge branch 'omap-for-v3.8/cleanup-headers-dma' into omap-for-v3.8/cleanup-headers 2012-10-17 10:01:30 -07:00
dca
devfreq
dio
dma Merge branch 'omap-for-v3.8/cleanup-headers-dma' into omap-for-v3.8/cleanup-headers 2012-10-17 10:01:30 -07:00
edac Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
eisa
extcon Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-10-02 09:54:49 -07:00
firewire firewire: cdev: fix user memory corruption (i386 userland on amd64 kernel) 2012-10-09 18:26:28 +02:00
firmware firmware/memmap: avoid type conflicts with the generic memmap_init() 2012-10-19 14:07:47 -07:00
gpio gpio: mvebu: Add missing breaks in mvebu_gpio_irq_set_type 2012-10-17 17:40:18 +00:00
gpu nouveau: fix warning on 32-bit build. 2012-10-16 16:40:53 +10:00
hid Merge branch 'next' into for-linus 2012-10-11 00:45:21 -07:00
hsi
hv
hwmon hwmon: (coretemp) Add support for Atom CE4110/4150/4170 2012-10-14 15:21:33 -07:00
hwspinlock
i2c Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux 2012-10-11 10:27:51 +09:00
ide sections: fix section conflicts in drivers/ide 2012-10-06 03:04:41 +09:00
idle intel_idle: enable IVB Xeon support 2012-09-26 22:28:21 -04:00
iio
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2012-10-10 19:52:19 +09:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2012-10-13 10:56:03 +09:00
iommu IOMMU Updates for Linux v3.7-rc1 2012-10-08 06:33:44 +09:00
irqchip irqchip: fill in empty Kconfig 2012-09-24 10:07:40 -07:00
isdn isdn: fix a wrapping bug in isdn_ppp_ioctl() 2012-10-10 22:50:45 -04:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2012-10-10 20:14:07 +09:00
lguest Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-07 21:04:56 +09:00
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
md md updates for 3.7 2012-10-13 13:22:01 -07:00
media This is the first set of omap cleanup patches for v3.8 merge 2012-10-24 13:25:44 -07:00
memory memory: tegra{20,30}-mc: Fix reading incorrect register in mc_readl() 2012-09-26 14:04:09 -07:00
memstick
message
mfd Merge branch 'omap-for-v3.8/cleanup-headers-menelaus' into omap-for-v3.8/cleanup-headers 2012-10-25 12:21:48 -07:00
misc pwm: Changes for v3.7-rc1 2012-10-10 20:15:24 +09:00
mmc Merge branch 'omap-for-v3.8/cleanup-headers-mmc' into omap-for-v3.8/cleanup-headers 2012-10-17 11:13:42 -07:00
mtd ARM: OMAP2+: fix build breakage introduced by commit b7754452b3 2012-10-26 13:16:30 -06:00
net bnx2x: fix handling mf storage modes 2012-10-16 14:41:47 -04:00
nfc NFC: Fix missing mutex unlock in pn533_send_cmd_frame_async 2012-09-27 10:47:48 +02:00
nubus
of of/platform: sparse fix 2012-10-17 15:53:03 -05:00
oprofile mm: use mm->exe_file instead of first VM_EXECUTABLE vma->vm_file 2012-10-09 16:22:18 +09:00
parisc
parport Xtensa patchset for 3.7 2012-10-09 16:11:46 +09:00
pci Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-10-06 03:16:12 +09:00
pcmcia This is the first set of omap cleanup patches for v3.8 merge 2012-10-24 13:25:44 -07:00
pinctrl pinctrl/nomadik: always use the simple irqdomain 2012-10-15 09:09:27 +02:00
platform Merge branches 'fixes-for-37', 'ec' and 'thermal' into release 2012-10-09 01:47:35 -04:00
pnp
power Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-10-13 11:27:59 +09:00
pps idr: rename MAX_LEVEL to MAX_IDR_LEVEL 2012-10-06 03:04:56 +09:00
ps3
ptp
pwm pwm: Changes for v3.7-rc1 2012-10-10 20:15:24 +09:00
rapidio rapidio: update for destination ID allocation 2012-10-11 08:50:15 +09:00
regulator MFD bits for the 3.7 merge window. 2012-10-05 12:01:30 +09:00
remoteproc Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-07 21:04:56 +09:00
rpmsg Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux 2012-10-07 21:04:56 +09:00
rtc rtc: kconfig: fix RTC_INTF defaults connected to RTC_CLASS 2012-10-11 08:50:16 +09:00
s390 qeth: fix deadlock between recovery and bonding driver 2012-10-16 14:41:46 -04:00
sbus
scsi Merge branch 'testing/driver-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into fixes 2012-10-19 15:40:18 -07:00
sfi
sh sh: Fix up more fallout from pointless ARM __iomem churn. 2012-10-15 14:08:48 +09:00
sn
spi Merge branch 'testing/driver-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into fixes 2012-10-19 15:40:18 -07:00
ssb
staging This is the first set of omap cleanup patches for v3.8 merge 2012-10-24 13:25:44 -07:00
target Merge branch 'for-3.7/core' of git://git.kernel.dk/linux-block 2012-10-11 09:04:23 +09:00
tc
thermal thermal, cpufreq: Fix build when CPU_FREQ_TABLE isn't configured 2012-10-15 14:00:07 -07:00
tty tty/serial/8250: Make omap hardware workarounds local to 8250.h 2012-10-24 11:30:57 -07:00
uio mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
usb Merge branch 'omap-for-v3.8/cleanup-headers-usb' into omap-for-v3.8/cleanup-headers 2012-10-24 15:05:45 -07:00
uwb
vfio vfio: Fix PCI INTx disable consistency 2012-10-10 09:10:32 -06:00
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2012-10-10 19:52:19 +09:00
video This is the first set of omap cleanup patches for v3.8 merge 2012-10-24 13:25:44 -07:00
virt
virtio virtio_mmio: Don't attempt to create empty virtqueues 2012-09-28 15:05:16 +09:30
vlynq
vme
w1 char/misc driver merge for 3.7-rc1 2012-10-01 12:09:59 -07:00
watchdog watchdog: OMAP: use standard GETBOOTSTATUS interface; use platform_data fn ptr 2012-11-08 12:33:07 -07:00
xen xen: Fix annoying compile-time warning 2012-10-19 11:54:21 -07:00
zorro
Kconfig ARM: soc: driver specific changes 2012-10-01 18:46:13 -07:00
Makefile IPMI: Change link order 2012-10-16 18:07:12 -07:00