04 Jul, 2008
1 commit
-
If the SM501 and another platform driver, such as the SM501
then we end up defining PLATFORM_DRIVER twice. This patch
seperated the SM501 onto a seperate define of SM501_OHCI_DRIVER
so that it can be selected without overwriting the original
definition.Signed-off-by: Ben Dooks
Acked-by: David Brownell
Cc: stable
Signed-off-by: Greg Kroah-Hartman
03 Apr, 2008
1 commit
-
Code inspection discovered in 2 places timers were being incorrectly setup
using round_jiffies_relative(HZ). The timer would then fire at time (0 <
HZ).Fix them to use round_jiffies(jiffies + HZ);
Signed-off-by: Richard Kennedy
Cc: Alan Stern
Cc: David Brownell
Cc: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman
02 Feb, 2008
4 commits
-
usb: ohci-sm501 driver V2
This patch adds sm501 ohci support. It's all very straightforward with the
exception of dma_declare_coherent_memory() and HCD_LOCAL_MEM. Together they
are used to ensure that usb data is allocated using dma_alloc_coherent(),
and that only valid dma memory is used to allocate from. This driver is
a platform device, and the mfd driver sm501.c is already creating one
usb host controller instance per sm501.Signed-off-by: Magnus Damm
Cc: David Brownell
Signed-off-by: Greg Kroah-Hartman -
add support for SuperH OHCI.
supported CPU are:
- SH7720
- SH7721
- SH7763Signed-off-by: Yoshihiro Shimoda
Acked-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
The OHCI driver's IRQ handler, while processing a WDH interrupt, masks
and unmasks it. I believe this is both broken (the write may still be
posted during the donelist processing it's trying to safeguard) and
useless as this IRQ may not be reissued until it's acked (unless this
legacy code is an uncommented workaround for some chip erratum).Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
We should not have multiple line files in sysfs, this moves the data to
debugfs instead, like the UHCI driver.Signed-off-by: Tony Jones
Cc: Kay Sievers
Cc: David Brownell
Signed-off-by: Greg Kroah-Hartman
26 Jan, 2008
1 commit
-
Signed-off-by: eric miao
Signed-off-by: Russell King
18 Dec, 2007
1 commit
-
The OHCI IRQ handler has an optimisation that avoids reading some
chip registers when the controller reports that the interrupt was
triggered *only* because completed requests were written into the
controller's "done list" and handed to the host.This mechanism can't be used on some controllers. Among others, it
fails for the SA1111 and the AMCC 440EP PowerPC processor.This patch removes the optimisation and makes the code clearer.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman
26 Oct, 2007
1 commit
-
Remove various newly-introduced compiler warnings for OHCI.
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman
13 Oct, 2007
4 commits
-
This adds SSB bus glue for the USB OHCI HCD.
Signed-off-by: Michael Buesch
Signed-off-by: John W. Linville
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
This patch (as975) reorganizes the way ohci-hcd sets urb->status. It
now keeps the information in a local variable until the last moment.Signed-off-by: Alan Stern
CC: David Brownell
Signed-off-by: Greg Kroah-Hartman -
This patch (as954) implements a suggestion of David Brownell's. Now
the host controller drivers are responsible for linking and unlinking
URBs to/from their endpoint queues. This eliminates the possiblity of
strange situations where usbcore thinks an URB is linked but the HCD
thinks it isn't. It also means HCDs no longer have to check for URBs
being dequeued before they were fully enqueued.In addition to the core changes, this requires changing every host
controller driver and the root-hub URB handler. For the most part the
required changes are fairly small; drivers have to call
usb_hcd_link_urb_to_ep() in their urb_enqueue method,
usb_hcd_check_unlink_urb() in their urb_dequeue method, and
usb_hcd_unlink_urb_from_ep() before giving URBs back. A few HCDs make
matters more complicated by the way they split up the flow of control.In addition some method interfaces get changed. The endpoint argument
for urb_enqueue is now redundant so it is removed. The unlink status
is required by usb_hcd_check_unlink_urb(), so it has been added to
urb_dequeue.Signed-off-by: Alan Stern
CC: David Brownell
CC: Olav Kongas
CC: Tony Olech
CC: Yoshihiro Shimoda
Signed-off-by: Greg Kroah-Hartman -
The ZF Micro OHCI controller exhibits unexpected behavior that seems to be
related to high load. Under certain conditions, the controller will
complete a TD, remove it from the endpoint's queue, and fail to add it to
the donelist. This causes the endpoint to appear to stop responding. Worse,
if the device is removed while in that state, OHCI will hang while waiting
for the orphaned TD to complete. The situation is not recoverable without
rebooting.This fix enhances the scope of the existing OHCI_QUIRK_ZFMICRO flag:
1. A watchdog routine periodically scans the OHCI structures to check
for orphaned TDs. In these cases the TD is taken back from the
controller and completed normally.2. If a device is removed while the endpoint is hung but before the
watchdog catches the situation, any outstanding TDs are taken back
from the controller in the 'sanitize' phase.The ohci-hcd driver used to print "INTR_SF lossage" in this situation;
this changes it to the universally accurate "ED unlink timeout". Other
instances of this message presumably have different root causes.Both this Compaq quirk and a NEC quirk are now properly compiled out for
non-PCI builds of this driver.Signed-off-by: Mike Nuss
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman
20 Jul, 2007
1 commit
-
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).
Here is a short excerpt of the semantic patch performing
this transformation:@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@x =
- kmalloc
+ kzalloc
(E1,E2)
... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);@@
expression E1,E2,E3;
@@- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Acked-by: Russell King
Cc: Bryan Wu
Acked-by: Jiri Slaby
Cc: Dave Airlie
Acked-by: Roland Dreier
Cc: Jiri Kosina
Acked-by: Dmitry Torokhov
Cc: Benjamin Herrenschmidt
Acked-by: Mauro Carvalho Chehab
Acked-by: Pierre Ossman
Cc: Jeff Garzik
Cc: "David S. Miller"
Acked-by: Greg KH
Cc: James Bottomley
Cc: "Antonino A. Daplas"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Jul, 2007
3 commits
-
USB HCD glue updates to reflect the new PS3 unifed device support.
- Fixed remove() routine.
- Added shutdown() routine.
- Added request_mem_region() call.
- Fixed MODULE_ALIAS().
- Made a proper fix for the hack done to support muti-platform in commit
48fda45120a819ca40cadc50144b55bff1c4c78d.Signed-off-by: Geoff Levand
Cc: Paul Mackerras
Signed-off-by: Greg Kroah-Hartman -
This patch fixes a silicon bug in some NEC OHCI chips. The bug appears
at random times and is very, very difficult to reproduce. Without the
following patch, Linux would shut the chip and its associated devices
down. In Apple PowerBooks this leads to an unusable keyboard and mouse
(SSH still working). The idea of restarting the chip is taken from
public Darwin code.Signed-off-by: Michael Hanselmann
Cc: David Brownell
Signed-off-by: Greg Kroah-Hartman -
This patch (as887) changes the way ehci-hcd and ohci-hcd handle a loss
of VBUS power during suspend. In order for the USB-persist facility
to work correctly, it is necessary for low- and full-speed devices
attached to a high-speed port to be handed back to the companion
controller during resume processing.This entails three changes: adding code to ehci-hcd to perform the
handover, removing code from ohci-hcd to turn off ports during
root-hub reinit, and adding code to ohci-hcd to turn on ports during
PCI controller resume. (Other bus glue resume methods for platforms
supporting high-speed controllers would need a similar change, if any
existed.)Signed-off-by: Alan Stern
Signed-off-by: Greg Kroah-Hartman
09 May, 2007
1 commit
-
Remove includes of where it is not used/needed.
Suggested by Al Viro.Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Apr, 2007
1 commit
-
Duplicate what Zach Brown did for pr_debug in commit
8b2a1fd1b394c60eaa2587716102dd5e9b4e5990[akpm@linux-foundation.org: fix a couple of things which broke]
Signed-off-by: Dan Williams
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman
17 Feb, 2007
1 commit
-
ps3_system_bus_driver_register is PS3 platform specific function.
On other platforms, it triggers WARN_ON in kref_get.Signed-off-by: Kou Ishizaki
Acked-by: Benjamin Herrenschmidt
Cc: David Brownell
Cc: Geoff Levand
Signed-off-by: Greg Kroah-Hartman
08 Feb, 2007
4 commits
-
USB OHCI driver bus glue for the PS3 game console.
Signed-off-by: Geoff Levand
Cc: David Brownell
Signed-off-by: Greg Kroah-Hartman -
Restructure the ohci_hcd_mod_init error handling code in to better support
the multiple platform drivers. This does not change the functionality.Signed-off-by: Benjamin Herrenschmidt
Cc: David Brownell
Signed-off-by: Geoff Levand
Signed-off-by: Greg Kroah-Hartman -
PPC embedded systems can have a ohci controller builtin. In the
new model, it will end up as a driver on the of_platform bus,
this patches takes care of them.Signed-off-by: Sylvain Munaut
Acked-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
The previous model had the module_init & module_exit function in the
bus glue .c files themselves. That's a problem if several glues need
to be selected at once and the driver is built has module. This case
is quite common in embedded system where you want to handle both the
integrated ohci controller and some extra controller on PCI.The ohci-hcd.c file now provide the module_init & module_exit and
appropriate driver registering/unregistering is done conditionally,
using #ifdefs.Signed-off-by: Sylvain Munaut
Acked-by: David Brownell
Signed-off-by: Greg Kroah-Hartman
21 Dec, 2006
2 commits
-
OHCI HCD (Host Controller Driver) for USB. Bus Glue for PNX8550.
Signed-off-by: Vitaly Wool
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
This is an OHCI cleanup patch ... it removes a lot of erroneous whitespace
(space before tab, at end of line) as well as the obsolete inline changelog.Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman
08 Dec, 2006
1 commit
-
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (76 commits)
[ARM] 4002/1: S3C24XX: leave parent IRQs unmasked
[ARM] 4001/1: S3C24XX: shorten reboot time
[ARM] 3983/2: remove unused argument to __bug()
[ARM] 4000/1: Osiris: add third serial port in
[ARM] 3999/1: RX3715: suspend to RAM support
[ARM] 3998/1: VR1000: LED platform devices
[ARM] 3995/1: iop13xx: add iop13xx support
[ARM] 3968/1: iop13xx: add iop13xx_defconfig
[ARM] Update mach-types
[ARM] Allow gcc to optimise arm_add_memory a little more
[ARM] 3991/1: i.MX/MX1 high resolution time source
[ARM] 3990/1: i.MX/MX1 more precise PLL decode
[ARM] 3986/1: H1940: suspend to RAM support
[ARM] 3985/1: ixp4xx clocksource cleanup
[ARM] 3984/1: ixp4xx/nslu2: Fix disk LED numbering (take 2)
[ARM] 3994/1: ixp23xx: fix handling of pci master aborts
[ARM] 3981/1: sched_clock for PXA2xx
[ARM] 3980/1: extend the ARM Versatile sched_clock implementation from 32 to 63 bit
[ARM] 3979/1: extend the SA11x0 sched_clock implementation from 32 to 63 bit period
[ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter
...
02 Dec, 2006
2 commits
-
This patch (as808b) moves the Root Hub Status Change interrupt-disable
code in ohci-hcd back into the interrupt handler proper, to avoid the
chance of adverse interactions with mediocre hardware implementations.It also deletes the root-hub status timer from within the interrupt-enable
routine. There's no need to poll for status any more once interrupts are
re-enabled.Signed-off-by: Alan Stern
Signed-off-by: Greg Kroah-Hartman -
A number of configuration file changes.
These are mainly to replace references to ARCH_AT91RM9200 and
ARCH_AT91SAM9261 with the common/generic ARCH_AT91. That way we don't
need to mention every specific AT91 processor explicitly.Also adds the configuration option for AT91SAM9260-EK and AT91SAM9261-EK
boards.Signed-off-by: Andrew Victor
Signed-off-by: Russell King
17 Nov, 2006
1 commit
-
When a suspended OHCI controller sees a port's status change, it sets
both the Root-Hub-Status-Change and the Resume-Detect bits in the
Interrupt Status register. Processing both these bits, the driver
tries to resume the root hub twice!This patch (as807) fixes the bug by ignoring RD if RHSC is set. It
also prints a slightly more informative log message when a
remote-wakeup event occurs.Signed-off-by: Alan Stern
Signed-off-by: Greg Kroah-Hartman
05 Oct, 2006
1 commit
-
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.Signed-Off-By: David Howells
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
29 Sep, 2006
1 commit
-
This patch (as790b) adds "autostop" support to ohci-hcd: the driver
will automatically stop the host controller when no devices have been
connected for at least one second. This feature is useful when the
USB autosuspend facility isn't available, such as when
CONFIG_USB_SUSPEND hasn't been set.Signed-off-by: Alan Stern
Signed-off-by: Greg Kroah-Hartman
28 Sep, 2006
5 commits
-
When ohci-hcd is shutting down (for rmmod or PC-card removal), there is
a window when the device is shut down, HC communication area (->hcca)
is freed, but the core has not called "free_irq" yet. If another device
triggers a shared interrupt in this window, we oops when trying to
access the freed ->hcca.This patch removes the window by calling free_irq before ->hcca is freed.
The patch is tested at the PC hotplug test rig at Stratus, and with
rmmod by Rafael Wysocki.Signed-off-by: Pete Zaitcev
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
If some problem occurs during ehci startup, for instance, request_irq fails,
echi hcd driver tries it best to cleanup, but fails to unregister reboot
notifier, which in turn leads to crash on reboot/poweroff.The following patch resolves this problem by not using reboot notifiers
anymore, but instead making ehci/ohci driver get its own shutdown method. For
PCI, it is done through pci glue, for everything else through platform driver
glue.One downside: sa1111 does not use platform driver stuff, and does not have its
own shutdown hook, so no 'shutdown' is called for it now. I'm not sure if it
is really necessary on that platform, though.Signed-off-by: Aleks Gorelov
Cc: Alan Stern
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman -
Move to .
Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
inlined is the patch that adds basic support for USB OHCI controller
support for PNX4008 Philips PNX4008 ARM board. Due to HW design, it
depends on I2C driver for PNX4008 which I've recetnly posted to LKML and
i2c at lm-sensors.Signed-off-by: Vitaly Wool
Cc: David Brownell
Signed-off-by: Greg Kroah-Hartman -
This teaches OHCI to use the root hub status change (RHSC) IRQ, bypassing
root hub timers most of the time and switching over to the "new" root hub
polling scheme. It's complicated by the fact that implementations of OHCI
trigger and ack that IRQ differently (the spec is vague there).Avoiding root hub timers helps mechanisms like "dynamic tick" leave the
CPU in lowpower modes for longer intervals.Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman
03 Aug, 2006
1 commit
-
OHCI updates for AT91 series processors:
- Get ready for at91sam926x processors (ARMv5tej not ARMv4t)
- Suspend/resume support now behaves properly
- In "standby" mode, OHCI can be a source of system wakeup events
(remote wakeup, device connect/disconnect, etc)And minor cleanups.
Signed-off-by: David Brownell
Signed-off-by: Andrew Victor
Signed-off-by: Greg Kroah-Hartman
13 Jul, 2006
1 commit
-
This patch adds OHCI glue bits for the USB host interface in the
Cirrus ep93xx (arm920t) CPU.Signed-off-by: Lennert Buytenhek
Acked-by: David Brownell
Signed-off-by: Greg Kroah-Hartman
01 Jul, 2006
1 commit
-
Signed-off-by: Jörn Engel
Signed-off-by: Adrian Bunk
