Commit Graph

323 Commits

Author SHA1 Message Date
Alan Stern
c074b416b9 [PATCH] USB UHCI: improved reset handling
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>
2005-06-27 14:43:44 -07:00
Alan Stern
6c1b445c22 [PATCH] USB UHCI: Use root-hub IRQs while suspended
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>
2005-06-27 14:43:44 -07:00
Alan Stern
4daaa87c8f [PATCH] USB UHCI: Fix up loose ends
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>
2005-06-27 14:43:44 -07:00
Alan Stern
a8bed8b6be [PATCH] USB UHCI: Add root-hub suspend/resume support
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>
2005-06-27 14:43:43 -07:00
Alan Stern
c8f4fe4358 [PATCH] USB UHCI: Add root hub states
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>
2005-06-27 14:43:43 -07:00
Alan Stern
f5946f8220 [PATCH] USB UHCI: Minor improvements
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>
2005-06-27 14:43:43 -07:00
Alan Stern
014e73c99a [PATCH] USB UHCI: subroutine reordering
This patch moves a few subroutines around in the uhci-hcd source file.
Nothing else is changed.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27 14:43:42 -07:00
Olav Kongas
589a0083a3 [PATCH] USB: Fix oops at rmmod after failed probe in isp116x-hcd
This patch fixes an oops triggered at rmmod of isp116x-hcd
after the probe() has failed.

Also, it extends the error message printed, if the driver
cannot detect "Chip's Clock Ready" after a software reset.
As Ian Campbell recently reported, this happens if the
chip's H_WAKEUP pin is not pulled low during software reset.
Several people have already had this issue, hence the update
to the error message.

Also, extend the error message about the failed clock
detection after the software reset.

Signed-off-by: Olav Kongas <ok@artecdesign.ee>
2005-06-27 14:43:42 -07:00
Olav Kongas
4808a1c026 [PATCH] USB: Add isp116x-hcd USB host controller driver
This patch provides an "isp116x-hcd" driver for Philips'
ISP1160/ISP1161 USB host controllers.

The driver:
 - is relatively small, meant for use on embedded platforms.
 - runs usbtests 1-14 without problems for days.
 - has been in use by 6-7 different people on ARM and PPC platforms,
   running a range of devices including USB hubs.
 - supports suspend/resume of both the platform device and the root hub;
   supports remote wakeup of the root hub (but NOT the platform device)
   by USB devices.
 - does NOT support ISO transfers (nobody has asked for them).
 - is PIO-only.

Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27 14:43:42 -07:00
gregkh@suse.de
8561b10f6e [PATCH] USB: move the usb hcd code to use the new class code.
This moves a kref into the main hcd structure, which detaches it from
the class device structure.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 15:15:07 -07:00
David Brownell
c22fa3acbc [PATCH] spin longer for ehci port reset completion
This makes the EHCI driver spin a bit longer before concluding that the
port reset failed.  "Obviously safe."

It allows some devices to enumerate that previously didn't.  We've seen
a bunch of these problem reports recently, this will make some go away.

As reported by Michael Zapf <Michael.Zapf@uni-kassel.de>, some EHCI
controllers seem to take forever to finish port resets and produce
"port N reset error -110" type errors.  Spinning a bit longer helps.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-13 08:20:41 -07:00
David Brownell
c6de2b64eb [PATCH] USB: add sl811_cs support
This adds support for a CF-card USB Host adapter, the Ratoc REX-CFU1U, by
wrapping a PCMCIA driver around the existing "sl811-hcd" platform driver.

This CF card is especially useful for PDAs, which currently tend to have
no other solution for USB host capability.

From: Botond Botyanszki <boti@rocketmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-31 14:13:58 -07:00
David Brownell
1e9a47b62f [PATCH] USB: sl811-hcd fixes
Various fixes to the sl811-hcd driver:

  * Fix small glitches that crept in during recent evolution of usbcore's hcd
    glue layer, coupling endpoint state records to usbcore and active urbs.
    (As noted by folk whose boards weren't stuck on 2.6.9 kernels...)

  * Cope with various system-specific issues:
      - Some configurations (e.g. a CF-card uses this chip) have iospace
        addresses for the two registers, rather than memory mapped ones.
      - Some configurations do interesting things with IRQs; maybe the
        line is shared, or it doesn't support level triggering.
      - Not all boards can drive the chip reset line in software.

  * Address a potential race during unlinking.

  * Tweak probe/remove section info to handle the case where this segment
    of a platform bus is hotpluggable (e.g. CF card).  (The basic problem
    is that CONFIG_HOTPLUG is global, which is wrong since not all busses
    can hotplug even on hotplug-friendly systems...)  Also export the
    driver, so that the CF driver can depend on it.

Also removed some annoying end-of-line whitespace.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-31 14:13:58 -07:00
David Brownell
4756ae5b52 [PATCH] USB: ehci suspend must stop timer
Force the EHCI watchdog timer off during suspend, in case for some
reason it was still running after the root hub suspended.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-16 21:44:25 -07:00
Steven Cole
093cf723b2 [PATCH] USB: Spelling fixes for drivers/usb.
Here are some spelling corrections for drivers/usb.

cancelation -> cancellation
succesful -> successful
cancelation -> cancellation
decriptor -> descriptor
Initalize -> Initialize
wierd -> weird
Protocoll -> Protocol
occured -> occurred
successfull -> successful
Procesing -> Processing
devide -> divide
Isochronuous -> Isochronous
noticable -> noticeable
Basicly -> Basically
transfering -> transferring
intialize -> initialize
Incomming -> Incoming
additionnal -> additional
asume -> assume
Unfortunatly -> Unfortunately
retreive -> retrieve
tranceiver -> transceiver
Compatiblity -> Compatibility
Incorprated -> Incorporated
existance -> existence
Ununsual -> Unusual

Signed-off-by: Steven Cole <elenstev@mesatop.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-03 23:31:52 -07:00
David Brownell
56c1e26d75 [PATCH] USB: ehci power fixes
Miscellaneous updates for EHCI.

 - Mostly updates the power switching on EHCI controllers.  One routine
   centralizes the "power on/off all ports" logic, and the capability to
   do that is reported more correctly.

 - Courtesy Colin Leroy, a patch to always power up ports after resumes
   which didn't keep a USB device suspended.  The reset-everything logic
   powers down those ports (on some hardware) so something needs to turn
   them back on.

 - Minor tweaks/bugfixes for the debug port support.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-03 23:31:49 -07:00
Linus Torvalds
9f6c6fc505 Merge with kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6.git/
for 13 driver core, sysfs, and debugfs fixes.
2005-04-19 13:14:28 -07:00
kay.sievers@vrfy.org
089d42b013 [PATCH] kobject/hotplug split - usb cris
kobject_add() and kobject_del() don't emit hotplug events anymore.
We need to do it ourselves now.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-04-18 21:57:37 -07:00
Jesper Juhl
1bc3c9e1e4 [PATCH] USB: kfree cleanup for drivers/usb/* - no need to check for NULL
Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*,
there's no need to check a pointer for NULL before calling kfree() on it.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


Index: gregkh-2.6/drivers/usb/class/audio.c
===================================================================
2005-04-18 17:39:34 -07:00
David Brownell
0e4987639a [PATCH] USB: OHCI on Compaq Aramada 7400
This adds a quirk to the OHCI driver that lets it work with an old
Compaq implementation.  It also removes some needless strings from
the non-debug version of the driver.

Signed-off-by: Chris Clayton <chris_clayton@f1internet.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-04-18 17:39:30 -07:00
Pavel Machek
ba9d35fb01 [PATCH] USB: fix up remaining pm_message_t usages
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-04-18 17:39:24 -07:00
David Brownell
9a5d3e98dd [PATCH] USB: hcd suspend uses pm_message_t
This patch includes minor "sparse -Wbitwise" updates for the PCI based
HCDs.  Almost all of them involve just changing the second parameter of the
suspend() method to a pm_message_t ...  the others relate to how the EHCI
code walks in-memory data structures.  (There's a minor bug fixed there too
...  affecting the big-endian sysfs async schedule dump.)

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>


Index: gregkh-2.6/drivers/usb/core/hcd.h
===================================================================
2005-04-18 17:39:23 -07:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00