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  1. 14 5月, 2010 14 次提交
  3. 13 5月, 2010 7 次提交
  5. 19 3月, 2010 1 次提交
    • S
      msm: Add 'execute' datamover callback · 5b00f40f
      由 San Mehat 提交于 
      Based on a patch from Brent DeGraaf:

"The datamover supports channels which can be shared amongst devices.
As a result, the actual data transfer may occur some time after the
request is queued up. Some devices such as mmc host controllers
will timeout if a command is issued too far in advance of the actual
transfer, so if dma to other devices on the same channel is already
in progress or queued up, the added delay can cause pending transfers
to fail before they start. This change extends the api to allow a
user callback to be invoked just before the actual transfer takes
place, thus allowing actions directly associated with the dma
transfer, such as device commands, to be invoked with precise timing.
Without this mechanism, there is no way for a driver to realize
this timing. Also adds a user pointer to the command structure for use
by the caller to reference information that may be needed by the
callback routine for proper identification and processing associated
with that specific request. This change is necessary to fix problems
associated with excessive command timeouts and race conditions in the
mmc driver."

This patch also fixes all the callers of msm_dmov_enqueue_cmd() to
ensure their callback function is NULL.
Signed-off-by: NSan Mehat <san@google.com>
Cc: Brent DeGraaf <bdegraaf@quicinc.com>
Cc: Brian Swetland <swetland@google.com>
Signed-off-by: NDaniel Walker <dwalker@codeaurora.org>
      5b00f40f
  7. 13 2月, 2010 1 次提交
  9. 11 12月, 2009 1 次提交
  11. 20 11月, 2009 1 次提交
  13. 20 3月, 2009 1 次提交
    • R
      [ARM] pass reboot command line to arch_reset() · be093beb
      由 Russell King 提交于 
      OMAP wishes to pass state to the boot loader upon reboot in order to
instruct it whether to wait for USB-based reflashing or not.  There is
already a facility to do this via the reboot() syscall, except we ignore
the string passed to machine_restart().

This patch fixes things to pass this string to arch_reset().  This means
that we keep the reboot mode limited to telling the kernel _how_ to
perform the reboot which should be independent of what we request the
boot loader to do.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      be093beb
  15. 30 11月, 2008 1 次提交
  17. 28 11月, 2008 1 次提交
    • N
      [ARM] remove a common set of __virt_to_bus definitions · b5ee9002
      由 Nicolas Pitre 提交于 
      Let's provide an overridable default instead of having every machine
class define __virt_to_bus and __bus_to_virt to the same thing.  What
most platforms are using is bus_addr == phys_addr so such is the default.

One exception is ebsa110 which has no DMA what so ever, so the actual
definition is not important except only for proper compilation.  Also
added a comment about the special footbridge bus translation.

Let's also remove comments alluding to set_dma_addr which is not
(and should not) be commonly used.
Signed-off-by: NNicolas Pitre <nico@marvell.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      b5ee9002
  19. 22 10月, 2008 4 次提交
  21. 07 8月, 2008 1 次提交