13 Dec, 2016
1 commit
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In sirfsoc_dma_pm_suspend(), variable ‘sdesc’ is initialized but never used, which
leads to warning with W=1.drivers/dma/sirf-dma.c: In function 'sirfsoc_dma_pm_suspend':
drivers/dma/sirf-dma.c:1014:27: warning: variable 'sdesc' set but not used [-Wunused-but-set-variable]So remove it.
Signed-off-by: Vinod Koul
03 Oct, 2016
1 commit
05 Sep, 2016
1 commit
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irq_of_parse_and_map() returns 0 on error, no NO_IRQ, so the
failure condition can never be met.This changes the comparison to check for zero instead.
Signed-off-by: Arnd Bergmann
Signed-off-by: Vinod Koul
08 Aug, 2016
1 commit
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This is in preperation of moving to a callback that provides results to the
callback for the transaction. The conversion will maintain current behavior
and the driver must convert to new callback mechanism at a later time in
order to receive results.Signed-off-by: Dave Jiang
Reviewed-by: Lars-Peter Clausen
Signed-off-by: Vinod Koul
23 Jul, 2016
1 commit
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drivers should ensure that tasklets are killed, so that they can't be
run after driver remove is executedSigned-off-by: Vinod Koul
Cc: Barry Song
16 Jul, 2016
1 commit
22 Jun, 2016
1 commit
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If kzalloc() fails it will issue it's own error message including
a dump_stack(). So remove the site specific error messages.Signed-off-by: Peter Griffin
Acked-by: Jon Hunter
Acked-by: Linus Walleij
Signed-off-by: Vinod Koul
08 Jun, 2016
1 commit
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The sirfsoc_dmadata structs are not used outside the driver, so
remove build warnings by making them static. Fixes:drivers/dma/sirf-dma.c:1129:24: warning: symbol 'sirfsoc_dmadata_a6' was not declared. Should it be static?
drivers/dma/sirf-dma.c:1134:24: warning: symbol 'sirfsoc_dmadata_a7v1' was not declared. Should it be static?
drivers/dma/sirf-dma.c:1139:24: warning: symbol 'sirfsoc_dmadata_a7v2' was not declared. Should it be static?Signed-off-by: Ben Dooks
Signed-off-by: Vinod Koul
04 Mar, 2016
1 commit
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The sirf dma driver uses #ifdef to check for CONFIG_PM_SLEEP
for its suspend/resume code but then has no #ifdef for the
respective runtime PM code, so we get a warning if CONFIG_PM
is disabled altogether:drivers/dma/sirf-dma.c:1000:12: error: 'sirfsoc_dma_runtime_resume' defined but not used [-Werror=unused-function]
This removes the existing #ifdef and instead uses __maybe_unused
annotations for all four functions to let the compiler know it
can silently drop the function definition.Signed-off-by: Arnd Bergmann
Signed-off-by: Vinod Koul
01 Oct, 2015
1 commit
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This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.Signed-off-by: Luis de Bethencourt
Signed-off-by: Vinod Koul
19 Aug, 2015
1 commit
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If DMA interrupt comes and is latched by IRQ controller during the
execution of dma_terminate_all(), dma_irq routine will be executed
after dma terminated, and it will cause kernel panic.
We clear DMA interrupts in dma_terminate_all() to avoid this useless
interrupt.Signed-off-by: Yanchang Li
Signed-off-by: Barry Song
Signed-off-by: Vinod Koul
08 Jun, 2015
1 commit
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add support for new CSR atlas7 SoC. atlas7 exists V1 and V2 IP.
atlas7 DMAv1 is basically moved from marco, which has never been
delivered to customers and renamed in this patch.
atlas7 DMAv2 supports chain DMA by a chain table, this
patch also adds chain DMA support for atlas7.atlas7 DMAv1 and DMAv2 co-exist in the same chip. there are some HW
configuration differences(register offset etc.) with old prima2 chips,
so we use compatible string to differentiate old prima2 and new atlas7,
then results in different set in HW for them.Signed-off-by: Hao Liu
Signed-off-by: Yanchang Li
Signed-off-by: Barry Song
Signed-off-by: Vinod Koul
19 Mar, 2015
1 commit
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of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)Signed-off-by: Fabian Frederick
Signed-off-by: Vinod Koul
22 Dec, 2014
3 commits
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Now that the generic slave caps code can make use of the device assigned
capabilities, instead of relying on a callback to be implemented.Make use of this code.
Signed-off-by: Maxime Ripard
Signed-off-by: Vinod Koul -
Split the device_control callback of the SiRF Prima 2 DMA driver to make use
of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.Signed-off-by: Maxime Ripard
Signed-off-by: Vinod Koul -
The dmaengine header abbreviates destination as at least two different strings.
Make a coherent use of a single one.Signed-off-by: Maxime Ripard
Acked-by: Mark Brown
Acked-by: Laurent Pinchart
Acked-by: Stephen Warren
Signed-off-by: Vinod Koul
15 Dec, 2014
1 commit
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Pull driver core update from Greg KH:
"Here's the set of driver core patches for 3.19-rc1.They are dominated by the removal of the .owner field in platform
drivers. They touch a lot of files, but they are "simple" changes,
just removing a line in a structure.Other than that, a few minor driver core and debugfs changes. There
are some ath9k patches coming in through this tree that have been
acked by the wireless maintainers as they relied on the debugfs
changes.Everything has been in linux-next for a while"
* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
fs: debugfs: add forward declaration for struct device type
firmware class: Deletion of an unnecessary check before the function call "vunmap"
firmware loader: fix hung task warning dump
devcoredump: provide a one-way disable function
device: Add dev__once variants
ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
ath: use seq_file api for ath9k debugfs files
debugfs: add helper function to create device related seq_file
drivers/base: cacheinfo: remove noisy error boot message
Revert "core: platform: add warning if driver has no owner"
drivers: base: support cpu cache information interface to userspace via sysfs
drivers: base: add cpu_device_create to support per-cpu devices
topology: replace custom attribute macros with standard DEVICE_ATTR*
cpumask: factor out show_cpumap into separate helper function
driver core: Fix unbalanced device reference in drivers_probe
driver core: fix race with userland in device_add()
sysfs/kernfs: make read requests on pre-alloc files use the buffer.
sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
fs: sysfs: return EGBIG on write if offset is larger than file size
...
17 Nov, 2014
1 commit
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Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following
build warning when CONFIG_PM_SLEEP is not selected. This is because
sleep PM callbacks defined by SET_SYSTEM_SLEEP_PM_OPS are only used
when the CONFIG_PM_SLEEP is enabled.drivers/dma/sirf-dma.c:838:12: warning: 'sirfsoc_dma_pm_suspend' defined but not used [-Wunused-function]
drivers/dma/sirf-dma.c:879:12: warning: 'sirfsoc_dma_pm_resume' defined but not used [-Wunused-function]Signed-off-by: Jingoo Han
Signed-off-by: Vinod Koul
06 Nov, 2014
1 commit
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chanctnt is already filled by dma_async_device_register, which uses the channel
list to know how much channels there is.Since it's already filled, we can safely remove it from the drivers' probe
function.Signed-off-by: Maxime Ripard
Signed-off-by: Vinod Koul
20 Oct, 2014
1 commit
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A platform_driver does not need to set an owner, it will be populated by the
driver core.Signed-off-by: Wolfram Sang
04 Aug, 2014
1 commit
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The argument is always set to NULL and never used. Remove it.
Signed-off-by: Laurent Pinchart
Signed-off-by: Vinod Koul
16 Apr, 2014
1 commit
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The ">" here should be ">=" or we are one step beyond the end of the
sdma->channels[] array.Fixes: 2e041c94628c ('dmaengine: sirf: enable generic dt binding for dma channels')
Signed-off-by: Dan Carpenter
Acked-by: Barry Song
Signed-off-by: Vinod Koul
29 Mar, 2014
1 commit
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move to support of_dma_request_slave_channel() and dma_request_slave_channel.
we add a xlate() to let dma clients be able to find right dma_chan by generic
"dmas" properties in dts.Cc: Mark Rutland
Cc: Lars-Peter Clausen
Signed-off-by: Barry Song
Acked-by: Arnd Bergmann
Signed-off-by: Vinod Koul
20 Jan, 2014
1 commit
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this patch adds device_slave_caps() callback as SiRF SoC sound drivers
depend on it.Signed-off-by: Rongjun Ying
Signed-off-by: Barry Song
Signed-off-by: Vinod Koul
13 Aug, 2013
2 commits
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this patch adds PM ops entries in sirf-dma drivers, so that this
driver can support suspend/resume, hibernation and runtime PM.while suspending, sirf-dma will lose all registers, so we save
them at suspend and restore in resume for active channels.Signed-off-by: Barry Song
Signed-off-by: Rongjun Ying
Signed-off-by: Vinod Koul -
sirfsoc_dma_prep_cyclic() returns pointer, thus NULL should be
used instead of 0 in order to fix the following sparse warning:drivers/dma/sirf-dma.c:598:24: warning: Using plain integer as NULL pointer
Signed-off-by: Jingoo Han
Signed-off-by: Vinod Koul
05 Jul, 2013
1 commit
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read SIRFSOC_DMA_CH_ADDR register to get current dma transfer position, then
update dma residue so that things like ALSA drivers work as ALSA drivers need
the right residue value.Signed-off-by: Rongjun Ying
Signed-off-by: Barry Song
Signed-off-by: Vinod Koul
02 May, 2013
1 commit
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if we initilize dma driver by module_init, there are still many devices
which will be initilized earlier than dma. these devices will fail to
get dma channel.
this moves dmaengine earlier than device_initcall and make dma available
for all devices.Reported-by: Renwei Wu
Signed-off-by: Barry Song
Signed-off-by: Vinod Koul
15 Apr, 2013
1 commit
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there is hardcode which enabled the clock of dmaengine before,
this patch takes the clock by standard clock API and enable it
in probe.Signed-off-by: Barry Song
Signed-off-by: Vinod Koul
27 Feb, 2013
1 commit
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Pull slave-dmaengine updates from Vinod Koul:
"This is fairly big pull by my standards as I had missed last merge
window. So we have the support for device tree for slave-dmaengine,
large updates to dw_dmac driver from Andy for reusing on different
architectures. Along with this we have fixes on bunch of the drivers"Fix up trivial conflicts, usually due to #include line movement next to
each other.* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (111 commits)
Revert "ARM: SPEAr13xx: Pass DW DMAC platform data from DT"
ARM: dts: pl330: Add #dma-cells for generic dma binding support
DMA: PL330: Register the DMA controller with the generic DMA helpers
DMA: PL330: Add xlate function
DMA: PL330: Add new pl330 filter for DT case.
dma: tegra20-apb-dma: remove unnecessary assignment
edma: do not waste memory for dma_mask
dma: coh901318: set residue only if dma is in progress
dma: coh901318: avoid unbalanced locking
dmaengine.h: remove redundant else keyword
dma: of-dma: protect list write operation by spin_lock
dmaengine: ste_dma40: do not remove descriptors for cyclic transfers
dma: of-dma.c: fix memory leakage
dw_dmac: apply default dma_mask if needed
dmaengine: ioat - fix spare sparse complain
dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c
ioatdma: fix race between updating ioat->head and IOAT_COMPLETION_PENDING
dw_dmac: add support for Lynxpoint DMA controllers
dw_dmac: return proper residue value
dw_dmac: fill individual length of descriptor
...
28 Jan, 2013
2 commits
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Just like Russell pointed out in "DMAEngine: sirf: add DMA
pause/resume support" at
http://www.spinics.net/lists/arm-kernel/msg212496.html
here I find sirfsoc_dma_terminate_all() has same problem,
so move the locking to the front of registers access.Signed-off-by: Barry Song
Cc: Russell King
Signed-off-by: Vinod Koul -
pause/resume are important for users like ALSA sound drivers,
this patches make the sirf prima2/marco support DMA commands
DMA_PAUSE and DMA_RESUME.Signed-off-by: Barry Song
Cc: Russell King
Signed-off-by: Vinod Koul
08 Jan, 2013
1 commit
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The driver supports old up SiRFprimaII SoCs, this patch makes it support
the new SiRFmarco as well.
SiRFmarco, as a SMP SoC, adds new DMA_INT_EN_CLR and DMA_CH_LOOP_CTRL_CLR
registers, to disable IRQ/Channel, we should write 1 to the corresponding
bit in the two CLEAR register.Tested on SiRFmarco using SPI driver:
$ /mnt/spidev-sirftest -D /dev/spidev32766.0
spi mode: 0
bits per word: 8
max speed: 500000 Hz (500 KHz)00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00$ cat /proc/interrupts
CPU0 CPU1
32: 1593 0 GIC sirfsoc_timer0
33: 0 3533 GIC sirfsoc_timer1
44: 0 0 GIC sirfsoc_dma
45: 16 0 GIC sirfsoc_dma
47: 6 0 GIC sirfsoc_spi
50: 5654 0 GIC sirfsoc-uart
...Signed-off-by: Barry Song
Signed-off-by: Vinod Koul
04 Jan, 2013
1 commit
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CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
markings need to be removed.This change removes the use of __devinit, __devexit_p, __devinitconst,
and __devexit from these drivers.Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.Cc: Bill Pemberton
Cc: Viresh Kumar
Cc: Dan Williams
Cc: Vinod Koul
Cc: Barry Song
Cc: Jeff Kirsher
Cc: Alexander Duyck
Cc: Russell King
Cc: Linus Walleij
Cc: Jassi Brar
Cc: Dave Jiang
Cc: Bill Pemberton
Cc: Guennadi Liakhovetski
Signed-off-by: Greg Kroah-Hartman
29 Nov, 2012
2 commits
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CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.Signed-off-by: Bill Pemberton
Cc: Li Yang
Cc: Zhang Wei
Cc: Barry Song
Acked-by: Viresh Kumar
Signed-off-by: Greg Kroah-Hartman -
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.Signed-off-by: Bill Pemberton
Acked-by: Barry Song
Acked-by: Viresh Kumar
Acked-by: Russell King
Signed-off-by: Greg Kroah-Hartman
24 Oct, 2012
2 commits
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list_move_tail(&schan->queued, &schan->active) makes the list_empty(schan->queued)
undefined, we either should change it to:
list_move_tail(schan->queued.next, &schan->active)
or
list_move_tail(&sdesc->node, &schan->active)Signed-off-by: Barry Song
Cc: stable
Signed-off-by: Vinod Koul -
either DEV_TO_MEM or MEM_TO_DEV is supported, so change
OR to AND.Signed-off-by: Barry Song
Cc: stable
Signed-off-by: Vinod Koul
10 Oct, 2012
1 commit
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Pull slave-dmaengine updates from Vinod Koul:
"This time we have Andy updates on dw_dmac which is attempting to make
this IP block available as PCI and platform device though not fully
complete this time.We also have TI EDMA moving the dma driver to use dmaengine APIs, also
have a new driver for mmp-tdma, along with bunch of small updates.Now for your excitement the merge is little unusual here, while
merging the auto merge on linux-next picks wrong choice for pl330
(drivers/dma/pl330.c) and this causes build failure. The correct
resolution is in linux-next. (DMA: PL330: Fix build error) I didn't
back merge your tree this time as you are better than me so no point
in doing that for me :)"Fixed the pl330 conflict as in linux-next, along with trivial header
file conflicts due to changed includes.* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (29 commits)
dma: tegra: fix interrupt name issue with apb dma.
dw_dmac: fix a regression in dwc_prep_dma_memcpy
dw_dmac: introduce software emulation of LLP transfers
dw_dmac: autoconfigure data_width or get it via platform data
dw_dmac: autoconfigure block_size or use platform data
dw_dmac: get number of channels from hardware if possible
dw_dmac: fill optional encoded parameters in register structure
dw_dmac: mark dwc_dump_chan_regs as inline
DMA: PL330: return ENOMEM instead of 0 from pl330_alloc_chan_resources
DMA: PL330: Remove redundant runtime_suspend/resume functions
DMA: PL330: Remove controller clock enable/disable
dmaengine: use kmem_cache_zalloc instead of kmem_cache_alloc/memset
DMA: PL330: Set the capability of pdm0 and pdm1 as DMA_PRIVATE
ARM: EXYNOS: Set the capability of pdm0 and pdm1 as DMA_PRIVATE
dma: tegra: use list_move_tail instead of list_del/list_add_tail
mxs/dma: Enlarge the CCW descriptor area to 4 pages
dw_dmac: utilize slave_id to pass request line
dmaengine: mmp_tdma: add dt support
dmaengine: mmp-pdma support
spi: davici - make davinci select edma
...
22 Sep, 2012
1 commit
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Change the parameter list of device_prep_dma_cyclic() so the DMA drivers
can receive the flags coming from clients.
This feature can be used during audio operation to disable all audio
related interrupts when the DMA_PREP_INTERRUPT is cleared from the flags.Signed-off-by: Peter Ujfalusi
Acked-by: Nicolas Ferre
Acked-by: Shawn Guo
Acked-by: Vinod Koul
Signed-off-by: Mark Brown
