Commit Graph

1091 Commits

Author SHA1 Message Date
Russell King
a5a488db42 dmaengine: PL08x: rejig physical channel allocation
Rework the physical channel allocation mechanism to only allocate
physical channels to virtual channels when they're about to be used.
This eliminates all the complexity with holding channels while
descriptors are being prepared, which is completely unnecessary.

This also brings this driver to a state where the generic virtual DMA
code can be used with this driver, and opens up the possibility of
properly scheduling and prioritorising physical DMA channels to
virtual DMA channels.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:57 +01:00
Russell King
c33b644cb3 dmaengine: PL08x: start next descriptor from irq context
Rather than waiting for the tasklet to run, we can start the next
descriptor from interrupt context, as soon as we know that the
previous descriptor has completed.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:56 +01:00
Russell King
ea1605612c dmaengine: PL08x: split the pend_list in two
Our behaviour wasn't correct; issue_pending is supposed to be called
before any submitted descriptors are available for processing by the
DMA engine.  Split the pend_list in two, one for submitted descriptors
and another list for issued descriptors.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:55 +01:00
Russell King
eab82533c9 dmaengine: PL08x: re-jig the starting of txds
Rather than code the de-queue of the txd several times, move that into
the start_txd function.  Rename this to better illustrate what it's
now doing, and call this function when starting a delayed memcpy().

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:54 +01:00
Russell King
7847f6b55e dmaengine: PL08x: remove waiting descriptor pointer
As we no longer need to pass a descriptor to prep_phy_channel(), we
don't need to keep track of the descriptor which is waiting for a
channel to become available.  So let's get rid of it.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:54 +01:00
Russell King
c48d496329 dmaengine: PL08x: move DMA signal muxing into slave prepare code
Move the DMA request muxing into the slave prepare code and txd
release/completion code.  This means we only hold the DMA request
mux while there are descriptors waiting to be started or are in
progress.

This leaves txd->direction as a write-only variable; remove it.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:53 +01:00
Russell King
a936e79313 dmaengine: PL08x: convert to a list of completed descriptors
Convert PL08x to use a list of completed descriptors rather than
merely relying upon a single pointer.  This makes it possible to
schedule the tasklet for other purposes, and makes our behaviour
similar to virt-dma.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:51 +01:00
Russell King
5e2479bd0e dmaengine: PL08x: track mux usage on a per-channel basis.
Keep track of the number of descriptors currently using a MUX setting
on a per-channel basis.  This allows us to know when we have descriptors
queued somewhere which have been assigned a DMA request signal.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:50 +01:00
Russell King
ad0de2ac32 dmaengine: PL08x: move DMA signal muxing into pl08x_dma_chan struct
Move the signal handling out of the physical channel structure into
the virtual channel structure, where it should belong as it has more
to do with the virtual channel than the physical one.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:50 +01:00
Russell King
6b16c8b161 dmaengine: PL08x: split DMA signal muxing from channel alloc
Split the DMA request mux signal handling from the physical channel
allocation code.  The physical channel has very little to do with the
DMA request input which will be used, so these should be two separate
operations.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:49 +01:00
Russell King
dc8d5f8de1 dmaengine: PL08x: get rid of unnecessary checks in dma_slave_config
Get rid of the unnecessary checks in dma_slave_config utilizing
the DMA direction.  This allows us to move the computation of
cctl to the prepare function.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:48 +01:00
Russell King
800d683e6b dmaengine: PL08x: ignore 'direction' argument in dma_slave_config
Ignore the direction argument in dma_slave_config, and configure both
directions independently.  We still check that the configuration for
the intended direction is valid; this check will eventually be dropped.
This check is just for debugging at present.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:47 +01:00
Russell King
9862ba17b7 dmaengine: PL08x: extract function to to generate cctl values
Extract the functionality from dma_slave_config to generate the cctl
values for a given bus width and burst size.  This allows us to use
this elsewhere in the driver, namely the prepare functions.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:46 +01:00
Russell King
409ec8db46 dmaengine: PL08x: move the bus and increment selection to dma prepare function
Move the bus and transfer increment selection to the DMA prepare
function rather than the slave configuration function.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:45 +01:00
Russell King
95442b2234 dmaengine: PL08x: get rid of device_fc in struct pl08x_dma_chan
As we now store the dma_slave_config in pl08x_dma_chan, we don't need
to store this separately.  Use the one in dma_slave_config directly.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:43 +01:00
Russell King
ed91c13d29 dmaengine: PL08x: get src/dst addr direct from dma_slave_config struct
Add a dma_slave_config struct to struct pl08x_dma_chan, and move the
src_addr/dst_addr arguments into this struct.  This is a step away
from using the dma_slave_config's direction member.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:42 +01:00
Russell King
550ec36f50 dmaengine: PL08x: constify channel names and bus_id strings
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:41 +01:00
Russell King
b23f204c8d dmaengine: PL08x: move private data structures into amba-pl08x.c
Move the driver private data structures into the driver itself, rather
than having them exposed to everyone in a header file.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:40 +01:00
Russell King
aeea1808fe dmaengine: PL08x: clean up get_signal/put_signal
Try to avoid dereferencing the DMA engine's channel struct in these
platform helpers; instead, pass a pointer to the channel data into
get_signal(), and the returned signal number to put_signal().

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:38 +01:00
Russell King
48afb3112e dmaengine: PL08x: remove circular_buffer boolean from channel data
Circular buffers are not handled in this way; we have a separate API
call now to setup circular buffers.  So lets not mislead people with
this bool.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:37 +01:00
Russell King
c15a6ef6ea dmaengine: PL08x: remove redundant spinlock
The pl08x_driver_data spinlock is only ever initialized.  Nothing else
uses it.  Let's get rid of it.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:36 +01:00
Russell King
92d2fd619d dmaengine: PL08x: fix missed dma_transfer_direction fixup
db8196df4 (dmaengine: move drivers to dma_transfer_direction) missed
fixing up the "DMA_NONE" case.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:35 +01:00
Russell King
b843441a4c dmaengine: PL08x: remove runtime PM support
The runtime PM support conflicts with the generic AMBA bus PM, and also
causes a potential deadlock with the PL011 driver as it results in
interrupts being enabled beneath a spinlock.

I don't presently see any solution to this other than by removing the
runtime PM support entirely from the DMA engine driver.  Alternative
suggestions welcome.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:34 +01:00
Russell King
571fa74034 dmaengine: virt-dma: add support for cyclic DMA periodic callbacks
Add support for cyclic DMA's periodic callbacks.  Drivers are expected
to call vchan_cyclic_callback() when a period has completed, which will
schedule the tasklet to make the callback into the driver.

As callbacks are made from tasklet context, it is important to realise
that we don't guarantee a callback for each completed period, but for
N completed periods where N may be greater than one.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:23 +01:00
Russell King
fe045874aa dmaengine: virt-dma: vchan_find_desc()
Add a function to find a descriptor within the depths of the
virtualized DMA channel support.  Needed for tx_status functionality.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:22 +01:00
Russell King
50437bff7f dmaengine: split out virtual channel DMA support from sa11x0 driver
Split the virtual slave channel DMA support from the sa11x0 driver so
this code can be shared with other slave DMA engine drivers.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:21 +01:00
Linus Torvalds
7940b2adb4 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
 "A few fixes in pl330 and imx-sdma drivers."

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  DMA: PL330: Fix racy mutex unlock
  DMA: PL330: Add missing static storage class specifier
  dma: imx-sdma: buf_tail should be initialize in prepare function
  dmaengine: pl330: dont complete descriptor for cyclic dma
2012-06-20 22:12:52 -07:00
Viresh Kumar
10d8935f46 Viresh has moved
viresh.kumar@st.com email-id doesn't exist anymore as I have left the
company.  Replace ST's id with viresh.linux@gmail.com.

It also updates .mailmap file to fix address for 'git shortlog'

Signed-off-by: Viresh Kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-20 14:39:36 -07:00
Javi Merino
fdec53d520 DMA: PL330: Fix racy mutex unlock
pl330_update() stores a pointer to the thrd->req that finished, which
contains a pointer to the corresponding pl330_req.  This is done with
the pl330_lock held.  Then, it iterates through the req_done list,
calling the callback for each of the requests that are done.  The
problem is that the driver releases the lock before calling the
callback for each of the callbacks.  pl330_submit_req() running in
another processor can then acquire the lock and insert another request
in one of the thrd->req that hasn't been processed yet, replacing the
pointer to pl330_req there.  When the callback returns in
pl330_update() and the next rqdone is popped from the list, it
dereferences the pl330_req pointer to the just scheduled pl330_req,
instead of the one that has finished, calling pl330 with the wrong r.

This patch fixes this by storing the pointer to pl330_req directly in
the list.

Signed-off-by: Javi Merino <javi.merino@arm.com>
Cc: Jassi Brar <jaswinder.singh@linaro.org>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-14 08:39:52 +05:30
Sachin Kamat
5a67ac572e DMA: PL330: Add missing static storage class specifier
Fixes the following sparse warning:
drivers/dma/pl330.c:2542:5: warning: symbol 'add_desc' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-07 13:53:25 +05:30
Richard Zhao
8e2e27c744 dma: imx-sdma: buf_tail should be initialize in prepare function
This fix audio underrun issue. When SNDRV_PCM_TRIGGER_STOP
and SNDRV_PCM_TRIGGER_START, it calls prepare again. buf_tail
should be reset to zero.
So move buf_tail initialization into prepare function.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-07 13:48:42 +05:30
Tushar Behera
30c1dc0ff3 dmaengine: pl330: dont complete descriptor for cyclic dma
Commit eab2158558 ("dmaengine: pl330: dont complete descriptor for
cyclic dma") wrongly completes descriptor for cyclic dma, hence following
BUG_ON is still hit with cyclic DMA operations.

kernel BUG at drivers/dma/dmaengine.h:53!

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
2012-06-07 13:42:58 +05:30
Linus Torvalds
84a442b9a1 arm-soc: device tree conversions, part 2
These continue the device tree work from part 1, this set is for the
 tegra, mxs and imx platforms, all of which have dependencies on clock
 or pinctrl changes submitted earlier.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc device tree conversions (part 2) from Olof Johansson:
 "These continue the device tree work from part 1, this set is for the
  tegra, mxs and imx platforms, all of which have dependencies on clock
  or pinctrl changes submitted earlier."

Fix up trivial conflicts due to nearby changes in
drivers/{gpio/gpio,i2c/busses/i2c}-mxs.c

* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
  ARM: dt: tegra: invert status=disable vs status=okay
  ARM: dt: tegra: consistent basic property ordering
  ARM: dt: tegra: sort nodes based on bus order
  ARM: dt: tegra: remove duplicate device_type property
  ARM: dt: tegra: consistenly use lower-case for hex constants
  ARM: dt: tegra: format regs properties consistently
  ARM: dt: tegra: gpio comment cleanup
  ARM: dt: tegra: remove unnecessary unit addresses
  ARM: dt: tegra: whitespace cleanup
  ARM: dt: tegra cardhu: fix typo in SDHCI node name
  ARM: dt: tegra: cardhu: register core regulator tps62361
  ARM: dt: tegra30.dtsi: Add SMMU node
  ARM: dt: tegra20.dtsi: Add GART node
  ARM: dt: tegra30.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra20.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra: Add device tree support for AHB
  ARM: dts: enable audio support for imx28-evk
  ARM: dts: enable i2c device for imx28-evk
  i2c: mxs: add device tree probe support
  ARM: dts: enable mmc for imx28-evk
  ...
2012-05-26 12:57:47 -07:00
Linus Torvalds
2795343705 arm-soc: clock driver changes
The new clock subsystem was merged in linux-3.4 without any users, this
 now moves the first three platforms over to it: imx, mxs and spear.
 
 The series also contains the changes for the clock subsystem itself,
 since Mike preferred to have it together with the platforms that require
 these changes, in order to avoid interdependencies and conflicts.
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Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc clock driver changes from Olof Johansson:
 "The new clock subsystem was merged in linux-3.4 without any users,
  this now moves the first three platforms over to it: imx, mxs and
  spear.

  The series also contains the changes for the clock subsystem itself,
  since Mike preferred to have it together with the platforms that
  require these changes, in order to avoid interdependencies and
  conflicts."

Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).

* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  SPEAr: Update defconfigs
  SPEAr: Add SMI NOR partition info in dts files
  SPEAr: Switch to common clock framework
  SPEAr: Call clk_prepare() before calling clk_enable
  SPEAr: clk: Add General Purpose Timer Synthesizer clock
  SPEAr: clk: Add Fractional Synthesizer clock
  SPEAr: clk: Add Auxiliary Synthesizer clock
  SPEAr: clk: Add VCO-PLL Synthesizer clock
  SPEAr: Add DT bindings for SPEAr's timer
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ...
2012-05-26 12:42:29 -07:00
Linus Torvalds
ce53044c68 arm-soc: driver specific updates
These changes are specific to some driver that may be used by multiple
 boards or socs. The most significant change in here is the move of the
 samsung iommu code from a platform specific in-kernel interface to the
 generic iommu subsystem.
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc driver specific updates from Olof Johansson:
 "These changes are specific to some driver that may be used by multiple
  boards or socs.  The most significant change in here is the move of
  the samsung iommu code from a platform specific in-kernel interface to
  the generic iommu subsystem."

Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
  mmc: dt: Consolidate DT bindings
  iommu/exynos: Add iommu driver for EXYNOS Platforms
  ARM: davinci: optimize the DMA ISR
  ARM: davinci: implement DEBUG_LL port choice
  ARM: tegra: Add SMMU enabler in AHB
  ARM: tegra: Add Tegra AHB driver
  Input: pxa27x_keypad add choice to set direct_key_mask
  Input: pxa27x_keypad direct key may be low active
  Input: pxa27x_keypad bug fix for direct_key_mask
  Input: pxa27x_keypad keep clock on as wakeup source
  ARM: dt: tegra: pinmux changes for USB ULPI
  ARM: tegra: add USB ULPI PHY reset GPIO to device tree
  ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
  ARM: tegra: change pll_p_out4's rate to 24MHz
  ARM: tegra: fix pclk rate
  ARM: tegra: reparent sclk to pll_c_out1
  ARM: tegra: Add pllc clock init table
  ARM: dt: tegra cardhu: basic audio support
  ARM: dt: tegra30.dtsi: Add audio-related nodes
  ARM: tegra: add AUXDATA required for audio
  ...
2012-05-26 12:22:27 -07:00
Linus Torvalds
d5adf235ad Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
 "Nothing exciting this time, odd fixes in a bunch of drivers"

* 'next' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: at_hdmac: take maxburst from slave configuration
  dmaengine: at_hdmac: remove ATC_DEFAULT_CTRLA constant
  dmaengine: at_hdmac: remove some at_dma_slave comments
  dma: imx-sdma: make channel0 operations atomic
  dmaengine: Fixup dmaengine_prep_slave_single() to be actually useful
  dmaengine: Use dma_sg_len(sg) instead of sg->length
  dmaengine: Use sg_dma_address instead of sg_phys
  DMA: PL330: Remove duplicate header file inclusion
  dma: imx-sdma: keep the callbacks invoked in the tasklet
  dmaengine: dw_dma: add Device Tree probing capability
  dmaengine: dw_dmac: Add clk_{un}prepare() support
  dma/amba-pl08x: add support for the Nomadik variant
  dma/amba-pl08x: check for terminal count status only
2012-05-25 09:31:59 -07:00
Linus Torvalds
1be5f0b757 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes fromVinod Koul:
 "fixes of cylic dma usages in slave dma drivers"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: fix cyclic dma usage
  dmaengine: pl330: dont complete descriptor for cyclic dma
2012-05-17 09:57:13 -07:00
Arnd Bergmann
3c0dec5f58 Merge branch 'clk-next' of git://git.linaro.org/people/mturquette/linux into next/clock
* 'clk-next' of git://git.linaro.org/people/mturquette/linux:
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ARM: Orion: SDIO: Add support for clk.
  ARM: Orion: NAND: Add support for clk, if there is one.
  ARM: Orion: EHCI: Add support for enabling clocks
  ARM: Orion: SATA: Add per channel clk/clkdev support.
  ARM: Orion: UART: Get the clock rate via clk_get_rate().
  ARM: Orion: WDT: Add clk/clkdev support
  ARM: Orion: Eth: Add clk/clkdev support.
  ARM: Orion: SPI: Add clk/clkdev support.
  ARM: Orion: Add clocks using the generic clk infrastructure.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-16 16:35:25 +02:00
Nicolas Ferre
1dd1ea8eb4 dmaengine: at_hdmac: take maxburst from slave configuration
The maxburst/chunk size was taken from the private slave DMA data structure.
Use the common API provided by DMA_SLAVE_CONFIG to setup src/dst maxburst
values.
The ctrla field is not needed anymore in the slave private structure nor the
header constants that were located in an architecture specific directory.
The at91sam9g45_devices.c file that was using this platform data is also
modified to remove this now useless data.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-05-15 08:47:18 +05:30
Nicolas Ferre
b409ebfb14 dmaengine: at_hdmac: remove ATC_DEFAULT_CTRLA constant
Not needed constant that was set to 0.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-05-15 08:47:18 +05:30
Vinod Koul
454caf1bef Merge branch 'fixes' into next 2012-05-15 08:44:54 +05:30
Vinod Koul
d41160524d dmaengine: fix cyclic dma usage
for cyclic dma, dont makr the descriptor as complte. Fix the remaining users of
cyclic dma which do so

Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Mika Westerberg <mika.westerberg@iki.fi>
2012-05-15 08:43:40 +05:30
Arnd Bergmann
304ea74770 Merge branch 'imx/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6.git into next/dt2
Shawn Guo <shawn.guo@linaro.org> writes:

  I chose to base it on Sascha's imx-common-clk series than -rc, because
  otherwise it will keep patching clock file that has been removed by
  imx-common-clk series.  It also depends on imx-pinctrl pull-request
  I just sent to be functional.

  Note: when imx-common-clk and imx-pinctrl get merged together, the
  following files will have conflicts.  But the conflicts should not be
  so hard to resolve.

[arnd: resolved those merge conflicts by pulling pinctrl branch]

* imx/dt: (24 commits)
  ARM: dts: imx53-qsb: enable audio support
  ARM: dts: imx51-babbage: enable audio support
  ARM: imx: add audio codec clk lookup for imx53-qsb
  ARM: imx: add audmux pad setting for imx51-babbage
  ARM: imx: add more imx5 ssi clocks
  ARM: dts: imx53-qsb: Add Dialog DA9053 PMIC support
  ARM: dts: imx6q-sabrelite: add serial2 pinctrl support
  ARM: dts: imx6q-sabrelite: add sound device imx6q-sabrelite-sgtl5000
  ARM: imx6q_sabrelite: clk_register_clkdev cko1 for sgtl5000
  ARM: imx6q: add ssi1_ipg clk_lookup
  ARM: dts: imx6q-sabrelite: add audmux pinctrl support
  ARM: dts: imx6q-sabrelite: add i2c1 pinctrl support
  ARM: dts: imx6q-sabrelite: add audmux device
  ARM: dts: imx6q-sabrelite: add ssi device
  ARM: dts: imx6q-arm2: add pinctrl state for usdhc
  ARM: imx6: Add UART2 for low-level debug
  ARM: imx6q: register phy fixup only when CONFIG_PHYLIB is enabled
  ARM: imx6q: move imx6q_sabrelite specific code to a dedicated function
  ARM: dts: imx6q-sabrelite: Add SPI NOR support
  ARM: dts: Add basic support for imx6q-sabresd
  ...

Pulls in imx/pinctrl and imx/clock as dependencies.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:28:19 +02:00
Arnd Bergmann
6b204283f2 Merge branch 'imx/pinctrl' into imx/dt
Conflicts:
	drivers/mmc/host/sdhci-esdhc-imx.c
	drivers/net/ethernet/freescale/fec.c
	drivers/spi/spi-imx.c
	drivers/tty/serial/imx.c

This resolves some simply but annoying conflicts.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:23:13 +02:00
Olof Johansson
7e6ecebd2c Merge tag 'ep93xx-fixes-for-3.5' of git://github.com/RyanMallon/linux-ep93xx into next/drivers
Branch has one driver feature and one board bug fix. Merging it as a driver branch.

DMA driver change was later:
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>

* tag 'ep93xx-fixes-for-3.5' of git://github.com/RyanMallon/linux-ep93xx:
  dmaengine/ep93xx_dma: Implement double buffering for M2M DMA channels
  arm: ep93xx: Don't try to release not acquired GPIO lines
2012-05-12 00:00:57 -07:00
Dong Aisheng
90c9abc5b7 dma: mxs-dma: add device tree probe support
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Huang Shijie <b32955@freescale.com>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
2012-05-12 13:32:18 +08:00
Shawn Guo
8c92013643 dma: mxs-dma: make platform_device_id more generic
Rewrite mxs_dma_is_apbh and mxs_dma_is_apbx in order to support
other SoCs like imx6q and reform the platform_device_id for the
better further dt support.

Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Huang Shijie <b32955@freescale.com>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
2012-05-12 13:32:17 +08:00
Shawn Guo
bb11fb63fc dma: mxs-dma: let dma_is_apbh and apbh_is_old take parameter
Let macros dma_is_apbh and apbh_is_old take mxs_dma as parameter
to make the code easy to read.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-05-12 13:32:17 +08:00
Dong Aisheng
f5b7efccdb dma: mxs-dma: use global stmp_device functionality
This can get rid of the mach-dependency.

Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Huang Shijie <b32955@freescale.com>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
2012-05-12 13:32:17 +08:00
Arnd Bergmann
93c6d8927f Merge branch 'clk/mxs' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/clock
Shawn Guo <shawn.guo@linaro.org> writes:

  mxs common clk porting for v3.5.  It depends on the following two branches.

  [1] git://git.linaro.org/people/mturquette/linux.git clk-next
  [2] http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-arm.git clkdev

  As the mxs device tree conversion will constantly touch clock files,
  to save the conflicts, the updated mxs/dt branch coming later will
  based on this pull-request.

* 'clk/mxs' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: mxs: remove now unused timer_clk argument from mxs_timer_init
  ARM: mxs: remove old clock support
  ARM: mxs: switch to common clk framework
  ARM: mxs: change the lookup name for fec phy clock
  ARM: mxs: request clock for timer
  clk: mxs: add clock support for imx28
  clk: mxs: add clock support for imx23
  clk: mxs: add mxs specific clocks

Includes an update to Linux 3.4-rc6

Conflicts:
	drivers/clk/Makefile

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-11 17:15:31 +02:00