summaryrefslogtreecommitdiff
path: root/drivers/dma
AgeCommit message (Collapse)Author
2015-03-05dmaengine: mmp_pdma: fix warning about slave capsRobert Jarzmik
Fix the dmaengine complaint about missing slave caps : - declare the available bus widths - declare the available transfer types - declare the residue calculation type Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-05dmaengine: qcom_bam_dma: fix wrong register offsetsStanimir Varbanov
The commit fb93f520e (dmaengine: qcom_bam_dma: Generalize BAM register offset calculations) wrongly populated base offsets for event registers for bam v1.4. Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Reviewed-by: Archit Taneja <architt@codeaurora.org> Reviewed-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-05dmaengine: bam-dma: fix a warning about missing capabilitiesStanimir Varbanov
Avoid the warning below triggered during dmaengine async device registration. WARNING: CPU: 1 PID: 1 at linux/drivers/dma/dmaengine.c:863 dma_async_device_register+0x2a8/0x4b8() this driver doesn't support generic slave capabilities reporting To do that fill mandatory .directions bit mask, .src/dst_addr_widths and .residue_granularity dma_device fields with appropriate values. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-05dmaengine: ioatdma: workaround for incorrect DMACAP registerDave Jiang
BDX-DE IOATDMA reports incorrect DMACAP register for PQ related ops. Ignoring those bits. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-05dmaengine: at_xdmac: fix for chan conf simplificationLudovic Desroches
When simplificating the channel configuration, the cyclic case has been forgotten. It leads to use bad configuration causing many bugs. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-05dmaengine: dw: don't handle interrupt when dmaengine is not usedJie Yang
When dma controller is not used by any user and set off, we should disble interrupt handler, at least the interrupt reset part, for some subsystem, e.g. ADSP, may use the dma in its own logic, here reset the interrupt may make this subsystem work abnormally. Signed-off-by: Jie Yang <yang.jie@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-04dma: mmp-tdma: refine dma disable and dma-pos updateQiao Zhou
Below are the refinements. 1. Set DMA abort bit when disabling dma channel. This will clear the remaining data in dma FIFO, to fix channel-swap issue. 2. Read DMA HW pointer when updating DMA status. Previously dma position is calculated by adding one period size in dma interrupt. This is inaccurate/insufficient for some high-quality audio APP. Since interrupt bottom half handler has variable schedule delay, it causes big error when calculating sample delay. Read the actual HW pointer and feedback can improve the accuracy. 3. Do some minor code clean. Signed-off-by: Qiao Zhou <zhouqiao@marvell.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-02dmaengine: shdma: Move DMA stop to (runtime) suspend callbacksGeert Uytterhoeven
During system reboot, the sh-dma-engine device may be runtime-suspended, causing a crash: Unhandled fault: imprecise external abort (0x1406) at 0x0002c02c Internal error: : 1406 [#1] SMP ARM ... PC is at sh_dmae_ctl_stop+0x28/0x64 LR is at sh_dmae_ctl_stop+0x24/0x64 If the sh-dma-engine is runtime-suspended, its module clock is turned off, and its registers cannot be accessed. To fix this, move the call to sh_dmae_ctl_stop(), which touches the DMAOR register, to the sh_dmae_suspend() and sh_dmae_runtime_suspend() callbacks. This makes PM operations more symmetric, as both sh_dmae_resume() and sh_dmae_runtime_resume() already call sh_dmae_rst() to re-initialize the DMAOR register. Remove sh_dmae_shutdown(), as it became empty. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-23dmaenegine: mmp-pdma: fix irq handler overwrite physical chan issueQiao Zhou
Some dma channels may be reserved for other purpose in other layer, like secure driver in EL2/EL3. PDMA driver can see the interrupt status, but it should not try to handle related interrupt, since it doesn't belong to PDMA driver in kernel. These interrupts should be handled by corresponding client/module.Otherwise, it will overwrite illegal memory and cause unexpected issues, since pdma driver only requests resources for pdma channels. In PDMA driver, the reserved channels are at the end of total 32 channels. If we find interrupt bit index is not smaller than total dma channels, we should ignore it. Signed-off-by: Qiao Zhou <zhouqiao@marvell.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-18Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull dmaengine updates from Vinod Koul: "This update brings: - the big cleanup up by Maxime for device control and slave capabilities. This makes the API much cleaner. - new IMG MDC driver by Andrew - new Renesas R-Car Gen2 DMA Controller driver by Laurent along with bunch of fixes on rcar drivers - odd fixes and updates spread over driver" * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (130 commits) dmaengine: pl330: add DMA_PAUSE feature dmaengine: pl330: improve pl330_tx_status() function dmaengine: rcar-dmac: Disable channel 0 when using IOMMU dmaengine: rcar-dmac: Work around descriptor mode IOMMU errata dmaengine: rcar-dmac: Allocate hardware descriptors with DMAC device dmaengine: rcar-dmac: Fix oops due to unintialized list in error ISR dmaengine: rcar-dmac: Fix spinlock issues in interrupt dmaenegine: edma: fix sparse warnings dmaengine: rcar-dmac: Fix uninitialized variable usage dmaengine: shdmac: extend PM methods dmaengine: shdmac: use SET_RUNTIME_PM_OPS() dmaengine: pl330: fix bug that cause start the same descs in cyclic dmaengine: at_xdmac: allow muliple dwidths when doing slave transfers dmaengine: at_xdmac: simplify channel configuration stuff dmaengine: at_xdmac: introduce save_cc field dmaengine: at_xdmac: wait for in-progress transaction to complete after pausing a channel ioat: fail self-test if wait_for_completion times out dmaengine: dw: define DW_DMA_MAX_NR_MASTERS dmaengine: dw: amend description of dma_dev field dmatest: move src_off, dst_off, len inside loop ...
2015-02-17Merge tag 'cleanup-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Olof Johansson: "This is a good healthy set of various code removals. Total net delta is 8100 lines removed. Among the larger cleanups are: - Removal of old Samsung S3C DMA infrastructure by Arnd - Removal of the non-DT version of the 'lager' board by Magnus Damm - General stale code removal on OMAP and Davinci by Rickard Strandqvist - Removal of non-DT support on am3517 platforms by Tony Lindgren ... plus several other cleanups of various platforms across the board" * tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (47 commits) ARM: sirf: drop redundant function and marco declaration arm: omap: specify PMUs are for ARMv7 CPUs arm: shmobile: specify PMUs are for ARMv7 CPUs arm: iop: specify PMUs are for XScale CPUs arm: pxa: specify PMUs are for XScale CPUs arm: realview: specify PMU types ARM: SAMSUNG: remove unused DMA infrastructure ARM: OMAP3: Add back Kconfig option MACH_OMAP3517EVM for ASoC ARM: davinci: Remove CDCE949 driver ARM: at91: remove useless at91rm9200_set_type() ARM: at91: remove useless at91rm9200_dt_initialize() ARM: at91: move debug-macro.S into the common space ARM: at91: remove useless at91_sysirq_mask_rtx ARM: at91: remove useless config MACH_AT91SAM9_DT ARM: at91: remove useless config MACH_AT91RM9200_DT ARM: at91: remove unused mach/memory.h ARM: at91: remove useless header file includes ARM: at91: remove unneeded header file rtc: at91/Kconfig: remove useless options ARM: at91/Documentation: add a README for Atmel SoCs ...
2015-02-16dmaengine: pl330: add DMA_PAUSE featureRobert Baldyga
DMA_PAUSE command is used for halting DMA transfer on chosen channel. It can be useful when we want to safely read residue before terminating all requests on channel. Otherwise there can be situation when some data is transferred before channel termination but after reading residue, which obviously results with data loss. To avoid this situation we can pause channel, read residue and then terminate all requests. This scenario is common, for example, in serial port drivers. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-16dmaengine: pl330: improve pl330_tx_status() functionRobert Baldyga
This patch adds possibility to read residue of DMA transfer. It's useful when we want to know how many bytes have been transferred before we terminate channel. It can take place, for example, on timeout interrupt. Signed-off-by: Lukasz Czerwinski <l.czerwinski@samsung.com> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-16dmaengine: rcar-dmac: Disable channel 0 when using IOMMULaurent Pinchart
A still unconfirmed hardware bug prevents the IPMMU microTLB 0 to be flushed correctly, resulting in memory corruption. DMAC 0 channel 0 is connected to microTLB 0 on currently supported platforms, so we can't use it with the IPMMU. As the IOMMU API operates at the device level we can't disable it selectively, so ignore channel 0 for now if the device is part of an IOMMU group. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-16dmaengine: rcar-dmac: Work around descriptor mode IOMMU errataLaurent Pinchart
When descriptor memory is accessed through an IOMMU the DMADAR register isn't initialized automatically from the first descriptor at beginning of transfer by the DMAC like it should. Initialize it manually with the destination address of the first chunk. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-16dmaengine: rcar-dmac: Allocate hardware descriptors with DMAC deviceLaurent Pinchart
When wired to an IOMMU to access data, the DMAC accesses the hardware descriptors through the IOMMU as well. We're using the DMA mapping API to allocate the descriptors, but with a NULL device at the moment, which prevents IOMMU mappings from being created. Fix this by passing the DMAC device instead. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-16dmaengine: rcar-dmac: Fix oops due to unintialized list in error ISRLaurent Pinchart
The error interrupt handler stops and reinitializes all channels. This causes a crash for channels that have never been used, as their descriptor lists are uninitialized. Fix it by initializing the descriptor lists at probe time. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-16dmaengine: rcar-dmac: Fix spinlock issues in interruptLaurent Pinchart
The rcar_dmac_desc_put() function is called in interrupt context and must thus use spin_lock_irqsave() instead of spin_lock_irq(). Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-16dmaenegine: edma: fix sparse warningsLad, Prabhakar
this patch fixes following sparse warnings: edma.c:537:32: warning: symbol 'edma_prep_dma_memcpy' was not declared. Should it be static? edma.c:1070:6: warning: symbol 'edma_filter_fn' was not declared. Should it be static? Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-12dmaengine: rcar-dmac: Fix uninitialized variable usageLaurent Pinchart
The desc variable is used uninitialized in the rcar_dmac_desc_get() and rcar_dmac_xfer_chunk_get() functions if descriptors need to be allocated. Fix it. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-12dmaengine: shdmac: extend PM methodsSergei Shtylyov
In order to make it possible to restore from hibernation not only in Linux but also in e.g. U-Boot, we have to use sh_dmae_{suspend|resume}() for the {freeze| thaw|restore}() PM methods. It's handy to achieve this with SIMPLE_DEV_PM_OPS() macro; since that macro doesn't do anything when CONFIG_PM_SLEEP is undefined, we don't need to #define sh_dmae_{suspend|resume} NULL anymore but we'll have to enclose sh_dmae_{suspend|resume}() into the new #ifdef... Based on original patch by Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-12dmaengine: shdmac: use SET_RUNTIME_PM_OPS()Sergei Shtylyov
Use SET_RUNTIME_PM_OPS() to initialize the runtime PM method pointers in the 'struct dev_pm_ops'; since that macro doesn't do anything if CONFIG_PM is not defined, we have to move #ifdef up to also cover the runtime PM methods in order to avoid compilation warnings. Based on orignal patch by Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-10dmaengine: pl330: fix bug that cause start the same descs in cyclicAddy Ke
This bug will cause NULL pointer after commit dfac17, and cause wrong package in I2S DMA transfer before commit dfac17. Tested on RK3288-pinky2 board. Detail: I2S DMA transfer(sound/core/pcm_dmaengine.c): dmaengine_pcm_prepare_and_submit --> dmaengine_prep_dma_cyclic --> pl330_prep_dma_cyclic --> the case: 1. pl330_submit_req(desc0): thrd->req[0].desc = desc0, thrd->lstenq = 0 2. pl330_submit_req(desc1): thrd->req[1].desc = desc1, thrd->lstenq = 1 3. _start(desc0) by submit_req: thrd->req_running = 0 because: idx = 1 - thrd->lstenq = 0 4. pl330_update(desc0 OK): thrd->req[0].desc = NULL, desc0 to req_done list because: idx = active = thrd->req_running = 0 5. _start(desc1) by pl330_update: thrd->req_running = 1 because: idx = 1 - thrd->lstenq = 0, but thrd->req[0].desc == NULL, so: idx = thrd->lstenq = 1 6. pl330_submit_req(desc2): thrd->req[0].desc = desc2, thrd->lstenq = 0 7. _start(desc1) by submit_req: thrd->req_running = 1 because: idx = 1 - thrd->lstenq = 1 Note: _start started the same descs _start should start desc2 here, NOT desc1 8. pl330_update(desc1 OK): thrd->req[1].desc = NULL, desc1 to req_done list because: idx = active = thrd->req_running = 1 9. _start(desc2) by pl330_update : thrd->req_running = 0 because: idx = 1 - thrd->lstenq = 0 10.pl330_update(desc1 OK, NOT desc2): thrd->req[0].desc = NULL, desc2 to req_done list because: idx = active = thrd->req_running = 0 11.pl330_submit_req(desc3): thrd->req[0].desc = desc3, thrd->lstenq = 0 12.pl330_submit_req(desc4): thrd->req[1].desc = desc4, thrd->lstenq = 1 13._start(desc3) by submit_req: thrd->req_running = 0 because: idx = 1 - thrd->lstenq = 0 14.pl330_update(desc2 OK NOT desc3): thrd->req[0].desc = NULL desc3 to req_done list because: idx = active = thrd->req_running = 0 15._start(desc4) by pl330_update: thrd->req_running = 1 because: idx = 1 - thrd->lstenq = 0, but thrd->req[0].desc == NULL, so: idx = thrd->lstenq = 1 16.pl330_submit_req(desc5): thrd->req[0].desc = desc5, thrd->lstenq = 0 17._start(desc4) by submit_req: thrd->req_running = 1 because: idx = 1 - thrd->lstenq = 1 18.pl330_update(desc3 OK NOT desc4): thrd->req[1].desc = NULL desc4 to req_done list because: idx = active = thrd->req_running = 1 19._start(desc4) by pl330_update: thrd->req_running = 0 because: idx = 1 - thrd->lstenq = 1, but thrd->req[1].desc == NULL, so: idx = thrd->lstenq = 0 20.pl330_update(desc4 OK): thrd->req[0].desc = NULL, desc5 to req_done list because: idx = active = thrd->req_running = 0 21.pl330_update(desc4 OK): 1) before commit dfac17(set req_running -1 in pl330_update/mark_free()): because: active = -1, abort result: desc0-desc5's callback are all called, but step 10 and step 18 go wrong. 2) before commit dfac17: idx = active = thrd->req_runnig = 0 --> descdone = thrd->req[0] = NULL --> list_add_tail(&descdone->rqd, &pl330->req_done); --> got NULL pointer!!! Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-05resources: Move struct resource_list_entry from ACPI into resource coreJiang Liu
Currently ACPI, PCI and pnp all implement the same resource list management with different data structure. We need to transfer from one data structure into another when passing resources from one subsystem into another subsystem. So move struct resource_list_entry from ACPI into resource core and rename it as resource_entry, then it could be reused by different subystems and avoid the data structure conversion. Introduce dedicated header file resource_ext.h instead of embedding it into ioport.h to avoid header file inclusion order issues. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-02-04dmaengine: at_xdmac: allow muliple dwidths when doing slave transfersLudovic Desroches
When using FIFO, we need to support differents data width in a single transfer. For example, serial device which usually uses 1-byte data width will use 4-bytes data width when using the FIFO. If the transfer size is not aligned on 4-bytes then the end of the transfer will be performed with 1-byte data-width. For that reason, at_xdmac_prep_slave_sg() now builds linked list descriptors using view 2 instead of view 1 so each of them can update the DWIDTH field into the Channel Configuration Register. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmaengine: at_xdmac: simplify channel configuration stuffLudovic Desroches
This patch simplifies the channel configuration register management. Relying on a "software snapshot" of the configuration is not safe and too complex. Multiple dwidths will be introduced for slave transfers. In this case, it becomes quite difficult to have an accurate snapshot of the channel configuration register in the way it is done. Using the channel configuration available in the lli descriptor simplifies this stuff. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmaengine: at_xdmac: introduce save_cc fieldLudovic Desroches
When suspending the device, read the channel configuration directly from the register instead of relying on a software snapshot, it will be safer. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmaengine: at_xdmac: wait for in-progress transaction to complete after ↵Cyrille Pitchen
pausing a channel Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04ioat: fail self-test if wait_for_completion times outNicholas Mc Guire
wait_for_completion_timeout reaching timeout was being ignored, fail the self-test if timeout condition occurs. v2: fixup of coding style issues. Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at> Acked-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmaengine: dw: define DW_DMA_MAX_NR_MASTERSAndy Shevchenko
Instead of using magic number in the code the patch provides DW_DMA_MAX_NR_MASTERS constant. While here, restrict the reading of data width array by amount of the actual number of AHB masters. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmatest: move src_off, dst_off, len inside loopAndy Shevchenko
The scope of those varsiables is in while-loop. This patch moves them there and removes duplicate code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmatest: fix indentationAndy Shevchenko
Simple fixes an indentation in few places across the code. There is no functional change. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmaengine: Add driver for IMG MDCAndrew Bresticker
Add support for the IMG Multi-threaded DMA Controller (MDC) found on certain IMG SoCs. Currently this driver supports the variant present on the MIPS-based Pistachio SoC. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04dmaengine: s3c24xx: missing unlock on an error pathDan Carpenter
We should unlock here before returning -EINVAL. Fixes: 39ad46009654 ('dmaengine: s3c24xx: Split device_control') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-03ioatdma: Adding support for BDX-DE ioatdma.Dave Jiang
Adding PCI device IDs and hooks in workarounds for Broadwell DE ioatdma. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-02Merge branch 'topic/rcar' into for-linusVinod Koul
2015-02-02Merge branch 'topic/slave_caps_device_control_fix_rebased' into for-linusVinod Koul
2015-01-25dmaengine: of: bail out early if "dmas" property is not presentWolfram Sang
And don't print an error: not configured is not an error. Reported-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-25dmaengine: shdmac: fixup WARNING of slave caps retrievalKuninori Morimoto
ecc19d17868be9c9f8f00ed928791533c420f3e0 (dmaengine: Add a warning for drivers not using the generic slave caps retrieval) added WARN() for DMA_SLAVE. Kernel will shows WARNING without this patch. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-25dmaengine: rcar-hpbdma: tidyup residue_granularityKuninori Morimoto
The driver doesn't support residue reporting at all. residue_granularity should be set to DMA_RESIDUE_GRANULARITY_DESCRIPTOR. Special thanks to Laurent Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-24ARM: SAMSUNG: remove unused DMA infrastructureArnd Bergmann
Everything uses dmaengine now, so there is no reason to keep this around any longer. Thanks to everyone who was involved in moving the users over to use the dmaengine APIs. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-01-18dmaengine: coh901318: fix function return types build warningsArnd Bergmann
A recent patch that removed coh901318_control() replaced it with a number of pointers to existing functions, but those unfortunately have the wrong return type and need to be changed to return an 'int' with an error value rather than a 'void' to avoid these build warnings: drivers/dma/coh901318.c:2697:32: warning: assignment from incompatible pointer type base->dma_slave.device_config = coh901318_dma_set_runtimeconfig; ^ drivers/dma/coh901318.c:2698:31: warning: assignment from incompatible pointer type base->dma_slave.device_pause = coh901318_pause; ^ drivers/dma/coh901318.c:2699:32: warning: assignment from incompatible pointer type base->dma_slave.device_resume = coh901318_resume The coh901318_base_init function has the correct return type already, but needs to be marked 'static' to avoid a sparse warning about a missing declaration. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 6782af118b6c ("dmaengine: coh901318: Split device_control") Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-18dmaengine: s3c24xx: Fix typoMaxime Ripard
A typo has been introduced in the spin_unlock_irqrestore function. Fix it. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-18dmaengine: sa11x0: Fix warning and compilation errorsMaxime Ripard
The sa11x0_dma_resume conflicts between the dmaengine device_resume callback and the dev_pm_ops resume implementation. Also remove some unused variables at the same time. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-18dmaengine: Move dma_get_slave_caps() implementation to dmaengine.cLaurent Pinchart
The function is too big to be a static inline. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-14dmaengine: at_hdmac: declare slave capabilitiesLudovic Desroches
Declare slave capabilities to suppress "this driver doesn't support generic slave capabilities reporting" warning. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-14dmaengine: tegra: add slave capabilities reportingPaul Walmsley
After commit ecc19d17868be9c9f8f00ed928791533c420f3e0 ("dmaengine: Add a warning for drivers not using the generic slave caps retrieval"), the Tegra APB DMA driver causes this warning during boot: WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:830 dma_async_device_register+0x294/0x538() this driver doesn't support generic slave capabilities reporting Fix by setting the appropriate reporting structure fields that are passed to dma_async_device_register(). Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Thierry Reding <treding@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-13dmaengine: fsldma: remove the unused variableKevin Hao
Fix the following build warning: drivers/dma/fsldma.c: In function 'fsl_dma_device_terminate_all': drivers/dma/fsldma.c:947:6: warning: unused variable 'size' [-Wunused-variable] Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-13dmaengine: fsldma: declare slave capabilities for the generic codeKevin Hao
Since commit ecc19d17868b ("dmaengine: Add a warning for drivers not using the generic slave caps retrieval"), the dma drivers are required to fill the caps infos in order to support generic slaves caps retrieval. Otherwise we will get a warning like this: WARNING: at drivers/dma/dmaengine.c:830 Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.19.0-rc2-next-20150106-dirty #271 task: c0000001f70a0000 ti: c0000001f7044000 task.ti: c0000001f7044000 NIP: c00000000032b238 LR: c00000000032b234 CTR: c00000000001d258 REGS: c0000001f7047330 TRAP: 0700 Tainted: G W (3.19.0-rc2-next-20150106-dirty) MSR: 0000000080029000 <CE,EE,ME> CR: 24adbe22 XER: 20000000 SOFTE: 1 GPR00: c00000000032b234 c0000001f70475b0 c0000000009b4848 0000000000000040 GPR04: 0000000000000001 0000000000000001 0000000000000000 000000000000000f GPR08: 0000000000000000 c000000000902988 c000000000902988 00000000000052c8 GPR12: 0000000024adbe22 c00000000fff4000 c000000000002038 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR24: 0000000000000000 0000000000000000 c000000000972dc8 c0000000007e6fd0 GPR28: c0000001f76d1d30 c0000001f76d1c10 c0000001f76d1c00 0000000000000000 NIP [c00000000032b238] .dma_async_device_register+0x3f8/0x5b8 LR [c00000000032b234] .dma_async_device_register+0x3f4/0x5b8 Call Trace: [c0000001f70475b0] [c00000000032b234] .dma_async_device_register+0x3f4/0x5b8 (unreliable) [c0000001f70476a0] [c00000000032ca78] .fsldma_of_probe+0x298/0x438 [c0000001f7047750] [c00000000037080c] .platform_drv_probe+0x50/0x9c [c0000001f70477d0] [c00000000036e74c] .really_probe+0xa4/0x29c [c0000001f7047870] [c00000000036eae4] .__driver_attach+0x100/0x104 [c0000001f7047900] [c00000000036c1f0] .bus_for_each_dev+0x84/0xe4 [c0000001f70479a0] [c00000000036e164] .driver_attach+0x24/0x38 [c0000001f7047a10] [c00000000036dcc8] .bus_add_driver+0x1c8/0x2ac [c0000001f7047ab0] [c00000000036f14c] .driver_register+0x8c/0x158 [c0000001f7047b30] [c0000000003707a8] .__platform_driver_register+0x6c/0x80 [c0000001f7047ba0] [c000000000898a3c] .fsldma_init+0x2c/0x40 [c0000001f7047c10] [c000000000001818] .do_one_initcall+0xb8/0x234 [c0000001f7047d00] [c000000000878e2c] .kernel_init_freeable+0x188/0x268 [c0000001f7047db0] [c000000000002054] .kernel_init+0x1c/0xfc8 [c0000001f7047e30] [c000000000000884] .ret_from_kernel_thread+0x58/0xd4 Instruction dump: 7fb9f840 3bffffe0 409effac 7f54d378 48000060 813d0050 2f890000 40befdd0 3c62ffe3 38632450 482f0aa9 60000000 <0fe00000> 4bfffdb8 7f03c378 482ed465 Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-01-13dmaengine: rcar-hpbdma: fixup WARNING of slave caps retrievalKuninori Morimoto
ecc19d17868be9c9f8f00ed928791533c420f3e0 (dmaengine: Add a warning for drivers not using the generic slave caps retrieval) added WARN() for DMA_SLAVE. Kernel will shows WARNING without this patch. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 17:39:51 +0000