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On BayTrail platform DMA is not functional in the PCI mode, whereby it always
failed and exit at the point when it tries to get a clock. It causes the PCI
mode probe to exit with the error message:
dw_dmac_pci: probe of 0000:00:1e.0 failed with error -2
This patch moves clock operations to where it belongs to. Thus, the clock is
provided only in ACPI / non-PCI cases.
Reported-by: Chew, Chiau Ee <chiau.ee.chew@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The introduced filter function would be reused in the ACPI and DT cases since
in those cases we have to apply mandatory data to the requested channel. Thus,
patch moves platform driver to use it in that case.
The function unlikely can't be used by users of the driver due to an implicit
dependency to the dw_dmac_core module.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Instead of one request line member let's use both source and destination ones.
Usually we have no such hardware except Atmel MMC controller found on AVR32
platform (see arch/avr32/mach-at32ap/at32ap700x.c and
drivers/mmc/host/atmel-mci.c).
This patch removes slave_id usage since it'll be removed from the generic
structure in later. This breaks the non-ACPI / non-DT cases for the users of
the driver, i.e. SPI and HSUART. However, these cases mean only PCI enumerated
devices for now, which is anyway broken (considering more than one DMA
controller in the system) and this patch series is intended to fix that
eventually.
The ACPI and DT cases shall be aware of the channel direction when setting
request lines, but this is a minor problem that would be addressed in future.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Instead of exposing the possibility to set DMA registers CFG_HI and CFG_LO
strict user to provide handshake interfaces explicitly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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There is a common storage for platform data related structures and definitions
inside kernel source tree. The patch moves file from include/linux to
include/linux/platform_data and renames it acoordingly. The users are also
updated.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[For the arch/avr32/.* and .*sound/atmel.*]
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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We need to make sure to deqeueue the descriptor from the active list before
we call vchan_cookie_complete(). Also we need obviously only set chan->desc
to NULL after we stopped using it.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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add DMA_PREP_INTERRUPT flag to support no_period_wakeup, in which
user space app doesn't want audio interrupt to wake up audio threads.
Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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We can't annotate probe functions as __init since binding can occur at
any time, not just during kernel init.
Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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In case of no corresponding slave ID, the audmapp_set_slave() returns
-ENXIO same as sh_dmae_set_slave() of shdmac.c.
DMAEngine might return wrong channel without this patch
Signed-off-by: Ryo Kataoka <ryo.kataoka.wt@renesas.com>
Signed-off-by: Jun Watanabe <jun.watanabe.ue@renesas.com>,
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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When we fail to allocate memory for thread->srcs or thread->dsts and src_cnt or
dst_cnt great than 1 we leak memory on error path. This patch fixes the issue.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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To be future-proof and for better readability the time comparisons are modified
to use time_before_jiffies() instead of plain, error-prone math.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
[djbw: use time_before_jiffies() to make argument order more clear]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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There is no need to init .owner field.
Based on the patch from Peter Griffin <peter.griffin@linaro.org>
"mmc: remove .owner field for drivers using module_platform_driver"
This patch removes the superflous .owner field for drivers which
use the module_platform_driver API, as this is overriden in
platform_driver_register anyway."
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Levente Kurusa <lkurusa@redhat.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Several dma drivers calls tasklet_kill() in remove function. This is done
because all running tasklets should be killed on remove. This is missing
in imx sdma driver, so adding tasklet_kill() in sdma_remove function.
Signed-off-by: Vignesh Raman <Vignesh_Raman@mentor.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Currently there is no module_exit declared in SDMA driver, so that once
sdma module is inserted, it's shown with permanent attribute by lsmod,
and it can't be removed.
Use module_platform_driver to register/unregister SDMA driver and modify
SDMA's remove operation, to make SDMA driver possible to be removed.
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Pull slave-dma updates from Vinod Koul:
"Some notable changes are:
- new driver for AMBA AXI NBPF by Guennadi
- new driver for sun6i controller by Maxime
- pl330 drivers fixes from Lar's
- sh-dma updates and fixes from Laurent, Geert and Kuninori
- Documentation updates from Geert
- drivers fixes and updates spread over dw, edma, freescale, mpc512x
etc.."
* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (72 commits)
dmaengine: sun6i: depends on RESET_CONTROLLER
dma: at_hdmac: fix invalid remaining bytes detection
dmaengine: nbpfaxi: don't build this driver where it cannot be used
dmaengine: nbpf_error_get_channel() can be static
dma: pl08x: Use correct specifier for size_t values
dmaengine: Remove the context argument to the prep_dma_cyclic operation
dmaengine: nbpfaxi: convert to tasklet
dmaengine: nbpfaxi: fix a theoretical race
dmaengine: add a driver for AMBA AXI NBPF DMAC IP cores
dmaengine: add device tree binding documentation for the nbpfaxi driver
dmaengine: edma: Do not register second device when booted with DT
dmaengine: edma: Do not change the error code returned from edma_alloc_slot
dmaengine: rcar-dmac: Add device tree bindings documentation
dmaengine: shdma: Allocate cyclic sg list dynamically
dmaengine: shdma: Make channel filter ignore unrelated devices
dmaengine: sh: Rework Kconfig and Makefile
dmaengine: sun6i: Fix memory leaks
dmaengine: sun6i: Free the interrupt before killing the tasklet
dmaengine: sun6i: Remove switch statement from buswidth convertion routine
dmaengine: of: kconfig: select DMA_ENGINE when DMA_OF is selected
...
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Fixes a compilation error when RESET_CONTROLLER is not enabled in the
configuration.
drivers/dma/sun6i-dma.c: In function 'sun6i_dma_probe':
drivers/dma/sun6i-dma.c:911:2: error: implicit declaration of function 'devm_reset_control_get' [-Werror=implicit-function-declaration]
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Found using smatch:
drivers/dma/at_hdmac.c:299 atc_get_bytes_left() warn: unsigned
'atchan->remain_desc' is never less than zero.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Although this driver doesn't have any explicit compile-time architecture
dependencies, it is better not to bloat kernels on those platforms, where
this driver isn't needed, unless a compile test is being performed.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There've been many updates in ASoC side at this time, especially the
framework enhancement for multiple CODECs on a single DAI and more
componentization works.
The only major change in ALSA core is the addition of timestamp type
in sw_params field. This should behave in backward compatible way.
Other than that, there are lots of small changes and new drivers in
wide range, including a large code cut in HD-audio driver for
deprecated static quirks. Some highlights are below:
ALSA Core:
- Add the new timestamp type field to sw_params to choose
MONOTONIC_RAW type
HD-audio:
- Continued conversion to standard printk macros, generic code
cleanups
- Removal of obsoleted static quirk codes for Conexant and C-Media
codecs
- Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED,
Gigabyte BXBT-2807 mobo
- Intel Braswell support
ASoC:
- Support for multiple CODECs attached to a single DAI, enabling
systems with for example multiple DAC/speaker drivers on a single
link, contributed by Benoit Cousson based on work from Misael Lopez
Cruz
- Support for byte controls larger than 256 bytes based on the use of
TLVs contributed by Omair Mohammed Abdullah
- More componentisation work from Lars-Peter Clausen
- The remainder of the conversions of CODEC drivers to params_width()
by Mark Brown
- Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks,
Realtek RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas
Instruments TAS2552
- Lots of updates and fixes, especially to the DaVinci, Intel,
Freescale, Realtek, and rcar drivers"
* tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (402 commits)
ALSA: usb-audio: Whitespace cleanups for sound/usb/midi.*
ALSA: usb-audio: Respond to suspend and resume callbacks for MIDI input
sound/oss/pss: Remove typedefs pss_mixerdata and pss_confdata
sound/oss/opl3: Remove typedef opl_devinfo
ALSA: fireworks: fix specifiers in format strings for propper output
ASoC: imx-audmux: Use uintptr_t for port numbers
ASoC: davinci: Enable menuconfig entry for McASP
ASoC: fsl_asrc: Don't access members of config before checking it
ASoC: fsl_sarc_dma: Check pair before using it
ASoC: adau1977: Fix truncation warning on 64 bit architectures
ALSA: virtuoso: add Xonar Essence STX II support
ALSA: riptide: fix %d confusingly prefixed with 0x in format strings
ALSA: fireworks: fix %d confusingly prefixed with 0x in format strings
ALSA: hda - add codec ID for Braswell display audio codec
ALSA: hda - add PCI IDs for Intel Braswell
ALSA: usb-audio: Adjust Gamecom 780 volume level
ALSA: usb-audio: improve dmesg source grepability
ASoC: rt5670: Fix duplicate const warnings
ASoC: rt5670: Staticise non-exported symbols
ASoC: Intel: update stream only on stream IPC msgs
...
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CC: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
CC: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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When printing size_t values we should use the %zd or %zx format specifier
in order to ensure the value is displayed correctly and avoid warnings from
sparse.
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The argument is always set to NULL and never used. Remove it.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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It is common among dmaengine drivers to use a tasklet for bottom half
interrupt processing. Convert nbpfaxi to do the same.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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A race possibility exists if a DMA slave driver tries to free channel
resources witout waiting for all transfers to complete and without
explicitly terminating all requests. In such a case the IRQ processing
thread can race with .device_free_chan_resources(). To fix this race empty
all descriptor lists before freeing descriptor cache.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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This patch adds a driver for NBPF DMAC IP cores from Renesas, designed for
the AMBA AXI bus.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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DT boot does not yet support more than one edma device. To avoid issues at
runtime we should not register the second device when the kernel is booted
with DT.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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In case of edma_alloc_slot() failure during probe we should return the error
unchanged to make debugging easier.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The sg list used to prepare cyclic DMA descriptors is currently
allocated statically on the stack as an array of 32 elements. This makes
the shdma_prep_dma_cyclic() function consume a lot of stack space, as
reported by the compiler:
drivers/dma/sh/shdma-base.c: In function ‘shdma_prep_dma_cyclic’:
drivers/dma/sh/shdma-base.c:715:1: warning: the frame size of 1056 bytes
is larger than 1024 bytes [-Wframe-larger-than=]
Given the limited Linux kernel stack size, this could lead to stack
overflows. Fix the problem by allocating the sg list dynamically.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The shdma_chan_filter() function relies on the DMA channel being
embedded in an shdma_chan structure. If this assumption isn't true, for
instance when the system contains DMA channels supported by an unrelated
driver, the function will crash.
Avoid this by returning false directly when the channel belongs to an
unrelated device.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Separate helpers and drivers in the Kconfig and Makefile to improve
readability and move the CONFIG_OF dependency from the Makefile to
Kconfig.
[pebolle@tiscali.nl: reported need to rename SHDMA_R8A73A4 instances]
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[horms+renesas@verge.net.au: squashed rename of SHDMA_R8A73A4 instances]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The sun6i_dma_prep_memcpy and sun6i_dma_prep_slave_sg functions were both
leaking the descriptor they allocated if an error was happening after a
successful dma_pool_alloc call.
It also fixes a memleak that was happening in the scatter gather list
traversal, that was allocating as much descriptor as there was scatter gather
items, but only freeing the current descriptor if an error was to arise.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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There's still a small window between the call to sun6i_kill_tasklet and the end
of the driver remove function where a spurious interrupt might trigger, and
start using deallocated resources.
Replace the call to synchronize_irq by a free_irq, so that we're sure that we
won't get any further interrupts when we're deallocating resources.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Since the conversion routine is quite trivial, we don't need this switch, and
we can just use a simple calculation.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Select DMA_ENGINE when DMA_OF is selected since
of_dma_xlate_by_chan_id() from drivers/dma/of-dma.c uses
dma_get_slave_channel() from drivers/dma/dmaengine.c
This resolves error reported:
drivers/built-in.o: In function `of_dma_xlate_by_chan_id':
drivers/dma/of-dma.c:253: undefined reference to `dma_get_slave_channel'
Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Move the DMA channel used in cyclic mode (audio) to the highest priority
event queue which helps to reduce audio problems.
When the channel is terminated, move it back to the default queue.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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If the client (audio) does not request interrupts for every period we can
disable them.
With updated audio driver stack we can play audio w/o the need to process
any edma interrupts.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The edma can report accurate DMA position so update the residue_granularity
to DMA_RESIDUE_GRANULARITY_BURST.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The sg_dma_len() returns unsigned int but we had driver print it as %zu, use
%u as documented in Documentation/printk-formats.txt
drivers/dma/sun6i-dma.c: In function ‘sun6i_dma_prep_slave_sg’:
drivers/dma/sun6i-dma.c:643: warning: format ‘%zu’ expects type ‘size_t’,
but argument 8 has type ‘unsigned int’
drivers/dma/sun6i-dma.c:661: warning: format ‘%zu’ expects type ‘size_t’,
but argument 8 has type ‘unsigned int’
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Since the driver defined COMPILE_TEST, it gets compiled for different arch's
The driver uses __virt_to_phys() insteadof virt_to_phys, so replace it
drivers/dma/sun6i-dma.c: In function ‘sun6i_dma_dump_chan_regs’:
drivers/dma/sun6i-dma.c:203: error: implicit declaration of function '__virt_to_phys'
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Register the controller for device tree based lookup of DMA channels
(non-fatal for backwards compatibility with older device trees) and
provide the '#dma-cells' property in the shared mpc5121.dtsi file
Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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This patch adds a new common OF dma xlate callback function which will match a
channel by it's id. The binding expects one integer argument which it will use to
lookup the channel by the id.
Unlike of_dma_simple_xlate this function is able to handle a system with
multiple DMA controllers. When registering the of dma provider with
of_dma_controller_register a pointer to the dma_device struct which is
associated with the dt node needs to passed as the data parameter.
New function will use this pointer to match only channels which belong to the
specified DMA controller.
Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The Allwinner A31 has a 16 channels DMA controller that it shares with the
newer A23. Although sharing some similarities with the DMA controller of the
older Allwinner SoCs, it's significantly different, I don't expect it to be
possible to share the driver for these two.
The A31 Controller is able to memory-to-memory or memory-to-device transfers on
the 16 channels in parallel.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Commit - 653e67f7e5: "dmaengine: inherit debug settings from the subsystem
for subdirectories" introduced debug option for subdirectories too
This exposed issue with ipu driver not using return value
For now just warn users about it
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Per license_is_gpl_compatible(), the MODULE_LICENSE() string for GPL v2 is
"GPL v2", not "GPLv2". Use "GPL v2" so this module doesn't taint the
kernel.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Tested-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Shared Peripheral ASRC, running on SPBA, needs to use shp sciprts for
DMA transfer. So this patch just adds a new DMATYPE for it.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The filter() function is currently called by xlate() while it transfers
imx_dma_data as a local variable to the filter() but releases the data
right after returning a DMA channel pointer, which results chan->private
pointing an invalid memory space.
So this patch just stores the imx_dma_data into sdmac to make usre the
private pointer valid as long as the channel exists.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Commit 6079d38 ("dmaengine: pl330: Remove useless xfer_cb indirection")
removed the __callback() function which created an unnecessary level of
indirection to execute the tranfer callback .xfer_cb
Unfortunately the commit also changed the semantics slightly since that
function used to check if the request was not NULL before attempting to
execute the callback function. Not checking this could lead to a kernel
NULL pointer dereference error.
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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