From: Sricharan R <r.sricharan-l0cyMroinI0@public.gmane.org>
To: r.sricharan-l0cyMroinI0@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: santosh.shilimkar-l0cyMroinI0@public.gmane.org,
rnayak-l0cyMroinI0@public.gmane.org,
nsekhar-l0cyMroinI0@public.gmane.org,
tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org,
linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org,
vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
nm-l0cyMroinI0@public.gmane.org
Subject: [RFC PATCH 0/9] drivers: dma: Add support for dma-channel router
Date: Fri, 7 Mar 2014 17:46:07 +0530 [thread overview]
Message-ID: <1394194576-23741-1-git-send-email-r.sricharan@ti.com> (raw)
In some SoCs the dma request lines from the peripherals are
routed to the dma-controller through a crossbar. With this the
dma controller's available request lines are shared between the
peripherals.
This adds support to register the crossbar router associated with
a dma-channel and let the dma-controller driver map/unmap
the peripheral dma crossbar line to dma-controller's request
line.
This is on top of Russell's OMAP dma engine rework series
http://www.spinics.net/lists/linux-omap/msg102969.html
Sricharan R (9):
drivers: dma: omap-dma: Avoid hard-coding of the dma-request channels
drivers: dma: of-dma: Add support for dma-request line routers
drivers: dma: omap-dma: Add a seperate xlate function to get router
data
drivers: omap-dma: Add crossbar line as a resource to omap_chan
structure
drivers: dma: Add dma crossbar driver
arm: dts: dra: Add dma crossbar node
arm: dts: dra: Add dma-request router phandle to dma-specs
arm: dra: Enable dma crossbar support on dra7xx
arm: dts: dra7: Change the total dma-req numbers to crossbar channels
.../devicetree/bindings/arm/omap/dma-crossbar.txt | 26 +++
arch/arm/boot/dts/dra7.dtsi | 47 +++--
arch/arm/configs/omap2plus_defconfig | 1 +
drivers/dma/Kconfig | 7 +
drivers/dma/Makefile | 1 +
drivers/dma/of-dma.c | 82 +++++++-
drivers/dma/omap-dma-xbar.c | 219 ++++++++++++++++++++
drivers/dma/omap-dma-xbar.h | 32 +++
drivers/dma/omap-dma.c | 72 ++++++-
include/linux/of_dma.h | 22 ++
10 files changed, 479 insertions(+), 30 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/omap/dma-crossbar.txt
create mode 100644 drivers/dma/omap-dma-xbar.c
create mode 100644 drivers/dma/omap-dma-xbar.h
--
1.7.9.5
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next reply other threads:[~2014-03-07 12:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-07 12:16 Sricharan R [this message]
2014-03-07 12:16 ` [RFC PATCH 1/9] drivers: dma: omap-dma: Avoid hard-coding of the dma-request channels Sricharan R
2014-03-07 12:16 ` [RFC PATCH 2/9] drivers: dma: of-dma: Add support for dma-request line routers Sricharan R
2014-03-07 12:16 ` [RFC PATCH 3/9] drivers: dma: omap-dma: Add a seperate xlate function to get router data Sricharan R
2014-03-07 12:16 ` [RFC PATCH 4/9] drivers: omap-dma: Add crossbar line as a resource to omap_chan structure Sricharan R
2014-03-07 12:16 ` [RFC PATCH 5/9] drivers: dma: Add dma crossbar driver Sricharan R
2014-03-07 12:16 ` [RFC PATCH 6/9] arm: dts: dra: Add dma crossbar node Sricharan R
2014-03-07 12:16 ` [RFC PATCH 7/9] arm: dts: dra: Add dma-request crossbar phandle to dma-specs Sricharan R
2014-03-07 12:16 ` [RFC PATCH 8/9] arm: dra: Enable dma crossbar support on dra7xx Sricharan R
2014-03-07 12:16 ` [RFC PATCH 9/9] arm: dts: dra7: Change the total dma-req numbers to crossbar channels Sricharan R
2014-03-08 19:53 ` [RFC PATCH 0/9] drivers: dma: Add support for dma-channel router Rob Herring
2014-03-10 13:58 ` Sricharan R
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