07 Jul, 2011
6 commits
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Add a driver to configure the XO-1 RTC via CS5536 MSRs, to be used as a
system wakeup source via olpc-xo1-pm.Device detection is based on finding the relevant device tree node.
Signed-off-by: Daniel Drake
Link: http://lkml.kernel.org/r/1309019658-1712-11-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon
Acked-by: Grant Likely
Reviewed-by: Sebastian Andrzej Siewior
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: H. Peter Anvin -
Configure the XO-1's lid switch GPIO to trigger an SCI interrupt,
and correctly expose this input device which can be used as a wakeup
source.Signed-off-by: Daniel Drake
Link: http://lkml.kernel.org/r/1309019658-1712-9-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon
Signed-off-by: H. Peter Anvin -
The EC in the OLPC XO-1 delivers GPE events to provide various
notifications. Add the basic code for GPE/EC event processing and
enable the ebook switch, which can be used as a wakeup source.Signed-off-by: Daniel Drake
Link: http://lkml.kernel.org/r/1309019658-1712-8-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon
Signed-off-by: H. Peter Anvin -
The System Control Interrupt is used in the OLPC XO-1 to control various
features of the laptop. Add the driver base and the power button
functionality.This driver can't be built as a module, because functionality added in
future patches means that some drivers need to know at boot-time whether
SCI-based functionality is available.Signed-off-by: Daniel Drake
Link: http://lkml.kernel.org/r/1309019658-1712-6-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon
Signed-off-by: H. Peter Anvin -
Add code needed for basic suspend/resume of the XO-1 laptop.
Based on earlier work by Jordan Crouse, Andres Salomon, and others.This patch incorporates all earlier feedback from Thomas Gleixner. To
clarify a certain point (now more obvious in the code itself):
On resume, OpenFirmware returns execution to Linux in protected mode
with a kernel-compatible GDT already set up. The changes and
simplifications suggested have all been included.Signed-off-by: Daniel Drake
Link: http://lkml.kernel.org/r/1309019658-1712-5-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon
Signed-off-by: H. Peter Anvin -
Move these definitions into the relevant header file.
This was requested in the review of the upcoming XO-1 suspend/resume code.Signed-off-by: Daniel Drake
Link: http://lkml.kernel.org/r/1309019658-1712-3-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon
Signed-off-by: H. Peter Anvin
14 Jan, 2011
2 commits
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Drop the old geode_gpio crud, as well as the raw outl() calls; instead,
use the Linux GPIO API where possible, and the cs5535_gpio API in other
places.Note that we don't actually clean up the driver properly yet (once loaded,
it always remains loaded). That'll come later..This patch is necessary for building the driver.
Signed-off-by: Andres Salomon
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds (well, re-adds actually) handling for events/IRQs through cs5535
GPIOs. In the wild and wooly world of CS5535, setup_event() is for
assigning an IRQ to a GPIO filter/event pair, and set_irq() sets up the
pair to trigger IRQs.These should really only be used in highly platform-specific drivers (such
as OLPC's DCON driver). Sadly, because set_irq() uses MSRs, this causes
the driver to become X86-specific.Signed-off-by: Andres Salomon
Signed-off-by: Daniel Drake
Cc: Grant Likely
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Dec, 2009
5 commits
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..and include them in the lxfb/gxfb drivers rather than asm/geode.h (where
possible).Signed-off-by: Andres Salomon
Cc: Jordan Crouse
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: john stultz
Cc: Chris Ball
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Andres Salomon
Cc: Jordan Crouse
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: john stultz
Cc: Chris Ball
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The only thing that uses this is the reboot_fixups code.
Signed-off-by: Andres Salomon
Cc: Jordan Crouse
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: john stultz
Cc: Chris Ball
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is based on the old code on arch/x86/kernel/mfgpt_32.c, except it's
not x86 specific, it's modular, and it makes use of a PCI BAR rather than
a random MSR. Currently module unloading is not supported; it's uncertain
whether or not it can be made work with the hardware.[akpm@linux-foundation.org: add X86 dependency]
Signed-off-by: Andres Salomon
Cc: Jordan Crouse
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: john stultz
Cc: Chris Ball
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This creates a CS5535/CS5536 GPIO driver which uses a gpio_chip backend
(allowing GPIO users to use the generic GPIO API if desired) while also
allowing architecture-specific users directly (via the cs5535_gpio_*
functions).Tested on an OLPC machine. Some Leemotes also use CS5536 (with a mips
cpu), which is why this is in drivers/gpio rather than arch/x86.
Currently, it conflicts with older geode GPIO support; once MFGPT support
is reworked to also be more generic, the older geode code will be removed.Signed-off-by: Andres Salomon
Cc: Takashi Iwai
Cc: Jordan Crouse
Cc: David Brownell
Reviewed-by: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
