Now that it's in use on other boards, a bug in the original code needs fixing.
There is no need for the PXA27x OHCI to set usb power during init, since
the hub driver in usbcore handles that. Those platform-specific power
control functions are also incorrect, and should therefore be removed.
Add a check to clear the OTG pin hold bit until such times OTG is
properly implemented.
Signed-Off-By: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Some OHCI implementations have differences in the way the NDP register
(in roothub_a) reports the number of ports present. This patch allows the
platform specific code to optionally supply the number of ports. The
driver just reads the value at init (if not supplied) instead of reading
it every time its needed (except for an AMD756 bug workaround).
It also sets the value correctly for the ARM pxa27x architecture.
Signed-Off-By: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Evidently there are some boards which care a lot about this, but
as a rule it's been hard to notice.
OHCI_INTR_RD wasn't always cleared in the ohci irq handler. On some
systems this means certain remote wakeup scenarios could seem to hang
(in an interrupt storm, RD never clearing).
From: "William Morrow" <William.Morrow@amd.com>
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
NVidia reports (via Mark Overby) that some of their EHCI controllers
don't like certain data structure addresses beyond the 2GB mark.
He provided an earlier version of this patch.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
One change may improve some S1 or S3 resume cases, and the other
seems mostly to explain some strange state "lsusb" would show.
Two fixes:
- On resume, don't think about resuming any unpowered port, or
resetting any port with OWNER set to the OHCI/UHCI companion.
This will make some S1 and S3 resume scenarios work better.
- PORT_CSC was not being cleared correctly in ehci_hub_status_data.
This was visible at least through current versions of "lsusb",
and might have caused some other hub related strangeness.
The fix addresses all three write-to-clear bits, using the same
approach that UHCI happens to use: a mask of bits that are
cleared in most writes to that port status register.
Original patch seems to have been from from William.Morrow@amd.com
and this version (from David) finishes the write-to-clear changes.
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch (as558) removes from the UHCI driver a kernel timer used for
checking Full Speed Bandwidth Reclamation (FSBR). The checking can be
done during normal root-hub polling; it doesn't need a separate timer.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Clean up timer initialization by introducing DEFINE_TIMER a'la
DEFINE_SPINLOCK. Build and boot-tested on x86. A similar patch has been
been in the -RT tree for some time.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This adds the field tt_usecs to ehci_qh and ehci_iso_stream, and sets it
appropriately when setting them up as periodic endpoints. It records
the transation translator's think_time (added in last patch) plus the
downstream (i.e. low or full speed) bustime of the transfer associated
with each interrupt or iso frame, as calculated by usb_calc_bus_time.
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ohci-ppc-soc.c provides for a platform-specific callback mechanism for
when the HC is successfully probed or removed. It turned out that none
of the 3 platforms using it need this facility. Also the required
include/asm-ppc/usb.h has never been accepted. This patch removes the
callback feature and the include of <asm/usb.h>.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix the port numbering confusion for the S3C24XX platform device
information as reported by Rudy <rudyboy168@gmail.com>
This patch ensurs that the the ports are numbered 0 and 1.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Switch isp116x-hcd over from root hub polling to interrupt. This change closes
also a race that was present with the old polling scheme: status polling could
happen in a time window, where root hub status bits were not stable.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch removes support for user-provided platform-specific hardware reset
and clock starting/stopping functions. Hardware reset was needed earlier as
getting the software reset working was tricky due to the lack of documentation.
Recently, a number of people using isp116x have said the software reset is
working for them.
I haven't heard of anybody using the clock starting/stopping.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch sets the isp116x to report overcurrent always per-port.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The isp116x chip will now always be in per-port power switching mode. Remove
conf options to set any other mode.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch removes the power-on-to-power-good-time configuration option for
isp116x-hcd.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch converts kcalloc(1, ...) calls to use the new kzalloc() function.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This adds type-checking to pm_message_t, so that people can't confuse it
with int or u32. It also allows us to fix "disk yoyo" during suspend (disk
spinning down/up/down).
[We've tried that before; since that cpufreq problems were fixed and I've
tried make allyes config and fixed resulting damage.]
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When recently addressing remarks by Alexey Dobriyan about
the isp116x-hcd, I introduced a bug in the driver. Please
apply the attached patch to fix it.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch has a one line oops fix, plus related cleanups.
- The bugfix uses microframe scheduling data given to the hardware to
test "is this a periodic QH", rather than testing for nonzero period.
(Prevents an oops by providing the correct answer.)
- The cleanup going along with the patch should make it clearer what's
going on whenever those bitfields are accessed.
The bug came about when, around January, two new kinds of EHCI interrupt
scheduling operation were added, involving both the high speed (24 KBytes
per millisec) and low/full speed (1-64 bytes per millisec) microframe
scheduling. A driver for the Edirol UA-1000 Audio Capture Unit ran into
the oops; it used one of the newly supported high speed modes.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch does the same swap, i.e. use the ISO macro if (isoc).
Additionally, it fixes the return value - the usb_calc_bus_time function
returns the time in nanoseconds (I didn't notice that before) while the
HS_USECS and HS_USECS_ISO are microseconds. This fixes the function to
return nanoseconds always, and adjusts ehci-q.c (the only high-speed
caller of the function) to wrap the call in NS_TO_US().
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
USB (OHCI) Host driver for S3C2410/S3C2440 based systems
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A patch re-organizing some parts of root hub initialization deleted the
code initializing the bus-neutral reboot/shutdown notifier for OHCI.
This patch just restores that deleted code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The recent "pm_message_t" changes removed functionality from the Linux
PM framework. This patch removes it from the OMAP OHCI too, removing
the distinction between (previous) PM_SUSPEND_MEM and PM_SUSPEND_DISK
state transitions ... now the only suspend semantics supportable are
what was previously PM_SUSPEND_DISK (4) and is now "PMSG_SUSPEND" (3).
From: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The length of the array desc->bitmap is 3, and not 4:
Definitions involved:
In drivers/usb/core/hcd.h
464 #define bitmap DeviceRemovable
In drivers/usb/host/ohci-hub.c
395 struct usb_hub_descriptor *desc
In drivers/usb/core/hub.h
130 struct usb_hub_descriptor {
131 __u8 bDescLength;
132 __u8 bDescriptorType;
133 __u8 bNbrPorts;
134 __u16 wHubCharacteristics;
135 __u8 bPwrOn2PwrGood;
136 __u8 bHubContrCurrent;
137 /* add 1 bit for hub status change; round to bytes */
138 __u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8];
139 __u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8];
140 } __attribute__ ((packed));
In include/linux/usb.h
306 #define USB_MAXCHILDREN (16)
This defect was found automatically by Coverity Prevent, a static analysis
tool.
(akpm: this code should be shot. Field `bitmap' doesn't exist in struct
usb_hub_descriptor. And this .c file is #included in
drivers/usb/host/ohci-hcd.c, and someone somewhere #defines `bitmap' to
`DeviceRemovable'.
>From a maintainability POV it would be better to memset the whole array
beforehand - I changed the patch to do that)
Signed-off-by: Zaur Kambarov <zkambarov@coverity.com>
Cc: <linux-usb-devel@lists.sourceforge.net?
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg,
This patch fixes the kmalloc() flags argument type in USB
subsystem; hopefully all of its occurences. The patch was
made against patch-2.6.12-git2 from Jun 20.
Cleanup of flags for kmalloc() in USB subsystem.
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sorry that it took so long. Here comes a cleanup patch that
addresses the remarks by Alexey Dobriyan about
gregkh-usb-usb-isp116x-hcd-add.patch EXCEPT the remark about
the typecasting of mem_flags argument for kcalloc; this will
be addressed in a later patch.
OlavCleanup of isp116x-hcd.
Signed off by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
As a follow-up, remove the inclusion of pcmcia/version.h in many files.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Move the "event handler" to struct pcmcia_driver -- the unified event handler
will disappear really soon, but switching it to struct pcmcia_driver in the
meantime allows for better "step-by-step" patches.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Catch up with some PCMCIA API changes:
- Docs say that as of 2.6.11 the PCMCIA IRQInfo2 field is ignored,
but it's not yet removed from the API; stop using it anyway.
- As of 2.6.13 PCMCIA finally hotplugs and does driver binding
without "cardmgr"; add a MODULE_DEVICE_TABLE to support this.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch removes CONFIG_PMAC_PBOOK (PowerBook support). This is now
split into CONFIG_PMAC_MEDIABAY for the actual hotswap bay that some
powerbooks have, CONFIG_PM for power management related code, and just left
out of any CONFIG_* option for some generally useful stuff that can be used
on non-laptops as well.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The itd_patch() function is responsible for allocating entries in the
buffer page pointer list of the iTD. Particularly, a new page pointer
is needed every time when buffer data crosses a page boundary.
However, there is a bug in the allocation logic: the function does not
allocate a new entry when the current transaction is the first
transaction in the iTD (as indicated by first!=0).
The consequence is that, when the data of the first transaction begins
somewhere at the end of a page so that it actually does cross the page
boundary, no new page pointer is allocated. This means that the data
at the end of the first transaction (beyond the page boundary) will be
accessed by the HC using the second page pointer, which is zero.
Furthermore, the first page pointer will be later overwritten by the
page pointers of the other transactions, which will garble it because
the value is or-ed into the iTD field.
All this particular check (for !first) does is cause incorrect
behaviour, so it should be entirely removed (and with it the variable
first that is not used for anything else).
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch changes the way uhci-hcd detects valid ports. The
specification doesn't mention any way to find out how many ports a
controller has, so the driver has to use some heuristics, reading the port
status and control register and deciding whether the value makes sense.
With this patch the driver will recognize a typical failure mode (all bits
set to one) for nonexistent ports and won't assume there are always at
least 2 ports -- such an assumption seems silly if the heuristics have
already shown that the ports don't exist.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Various minor EHCI updates
* Dump some more info in the debug dumps, notably the product
description (e.g. chip vendor), BIOS handhake flags, and
debug port status (when it's not managed by the HCD).
* Minor updates to the BIOS handoff code: always flag the HCD
as owned by Linux (in case BIOS doesn't grab it "early"),
and on the buggy-BIOS path always match the "early handoff"
code and forcibly disable SMI IRQs.
* For the disabled 64bit DMA support, there's now a constant
to use for the mask; use it.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch changes the host controller drivers; they no longer need to
register their root hubs because usbcore will take care of it for them.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch changes the HCDs that used the old hub_set_power_budget call,
making them use the new hcd->power_budget field instead.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch simplifies the uhci-hcd driver by removing the device pointer
currently stored in the QH and TD structures. Those pointers weren't
being used for anything other than to increment the device's reference
count, which is unnecessary since the device is used only when an URB
completes, and outstanding URBs take their own reference to the device.
As a useful side effect, this change means that uhci-hcd no longer needs
to have the root-hub device available in the start routine.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Adds a reboot notifier to OHCI, mostly to benefit kexec; plus
minor #include tweaks.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
After all the discussion you might not be interested in this still, but
nevertheless here it is. This patch adds a shutdown method to the
uhci-hcd driver. Its prerequisite is the patch you wrote adding shutdown
support for PCI.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch improves the strategy uhci-hcd uses for performing controller
resets and checking whether they are needed.
The HCRESET command doesn't affect the Suspend, Resume,
or Reset bits in the port status & control registers, so
the driver must clear them by itself. This means the
code to figure out how many ports there are has to be moved
to an earlier spot in the driver.
The R/WC bits in the USBLEGSUP register can be set by the
hardware even in the absence of BIOS meddling with legacy
support features. Hence it's not a good idea to check them
while trying to determine whether the BIOS has altered the
controller's state.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch, which has as478b as a prerequisite, enables the uhci-hcd
driver to take advantage of root-hub IRQs rather than polling during the
time it is suspended. (Unfortunately the hardware doesn't support
port-change interrupts while the controller is running.) It also turns
off the driver's private timer while the controller is suspended, as it
isn't needed then. The combined elimination of polling interrupts and
timer interrupts ought to be enough to allow some systems to save a
noticeable amount of power while they are otherwise idle.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch tidies up a few loose ends left by the preceding patches.
It indicates the controller supports remote wakeup whenever the PM
capability is present -- which shouldn't cause any harm if the
assumption turns out to be wrong. It refuses to suspend the
controller if the root hub is still active, and it refuses to resume
the root hub if the controller is suspended. It adds checks for a
dead controller in several spots, and it adds memory barriers as
needed to insure that I/O operations are completed before moving on.
Actually I'm not certain the last part is being done correctly. With
code like this:
outw(..., ...);
mb();
udelay(5);
do we know for certain that the outw() will complete _before_ the
delay begins? If not, how should this be written?
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch implements (finally!) separate suspend and resume routines
for the root hub and the controller in the UHCI driver. It also
changes the sequence used to reset the controller during initial
probing, so as to preserve the existing state during a Resume-From-Disk.
(This new sequence is what should be used in the PCI Quirks code for
early USB handoffs, incidentally.) Lastly it adds a notion of the
controller being "inaccessible" while in a PCI low-power state, when
normal I/O operations shouldn't be allowed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch starts making some serious changes to the UHCI driver.
There's a set of private states for the root hub, and the internal
routines for suspending and resuming work completely differently, with
transitions based on the new states. Now the driver distinguishes
between a privately auto-stopped state and a publicly suspended state,
and it will properly suspend controllers with broken resume-detect
interrupts instead of resetting them.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch makes a few small improvements in the UHCI driver. Some
code is moved between different source files and a more useful pointer
is passed to a callback routine.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownell
Nishanth Aravamudan
Alan Stern
Ingo Molnar
Linus Torvalds
Dale Farnsworth
Ben Dooks
Olav Kongas
Greg Kroah-Hartman
Pekka Enberg
Pavel Machek
Dan Streetman
Ben Dooks
KAMBAROV, ZAUR
Dominik Brodowski
Linus Torvalds
Benjamin Herrenschmidt