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* dmaengine: pch-dma: Rename device_controlMaxime Ripard2014-12-221-6/+2
| | | | | | | | | Rename the device_control callback of the Intel PCH DMA driver to terminate_all since it's all it's really doing. That will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: mv_xor: Remove device_controlMaxime Ripard2014-12-221-9/+0
| | | | | | | | | The Marvell XOR engine doesn't allow any operations that use to be defined in device_control, it shouldn't need to be defined. Since it's going to be deprecated, remove it altogether. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: xilinx: Split device_controlMaxime Ripard2014-12-221-23/+6
| | | | | | | | | | Split the device_control callback of the Xilinx VDMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: tegra20: Split device_controlMaxime Ripard2014-12-221-20/+2
| | | | | | | | | Split the device_control callback of the NVidia Tegra20 APB DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: d40: Split device_controlMaxime Ripard2014-12-221-32/+28
| | | | | | | | | | Split the device_control callback of the ST-Ericsson DMA 40 driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: sun6i: Split device_controlMaxime Ripard2014-12-221-72/+78
| | | | | | | | | Split the device_control callback of the Allwinner A31 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: sirf: Split device_controlMaxime Ripard2014-12-221-30/+13
| | | | | | | | | 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 <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: sh: Split device_controlMaxime Ripard2014-12-221-39/+33
| | | | | | | | | | Split the device_control callback of the Super-H DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: sa11x0: Split device_controlMaxime Ripard2014-12-221-74/+84
| | | | | | | | | Split the device_control callback of the SA-11x0 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: s3c24xx: Split device_controlMaxime Ripard2014-12-221-39/+36
| | | | | | | | | Split the device_control callback of the Samsung S3C24xxx DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: bam-dma: Split device_controlMaxime Ripard2014-12-221-42/+43
| | | | | | | | | Split the device_control callback of the Qualcomm BAM DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: pl330: Split device_controlMaxime Ripard2014-12-221-65/+51
| | | | | | | | | Split the device_control callback of the AMBA PL330 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: omap: Split device_controlMaxime Ripard2014-12-221-36/+15
| | | | | | | | | Split the device_control callback of the TI OMAP DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: nbpfaxi: Split device_controlMaxime Ripard2014-12-221-47/+46
| | | | | | | | | Split the device_control callback of the NBPF AXI DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: mxs: Split device_controlMaxime Ripard2014-12-221-36/+23
| | | | | | | | | Split the device_control callback of the Freescale MXS DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: mpc512x: Split device_controlMaxime Ripard2014-12-221-60/+51
| | | | | | | | | Split the device_control callback of the Freescale MPC512x DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: fsl-dma: Split device_controlMaxime Ripard2014-12-221-59/+32
| | | | | | | | | | | Split the device_control callback of the Freescale Elo DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. While we're at it, remove the useless prep_sg callback. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: moxart: Split device_controlMaxime Ripard2014-12-221-23/+2
| | | | | | | | | Split the device_control callback of the Moxart DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: mmp-tdma: Split device_controlMaxime Ripard2014-12-221-38/+44
| | | | | | | | | Split the device_control callback of the Marvell MMP TDMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: mmp-pdma: Split device_controlMaxime Ripard2014-12-221-53/+56
| | | | | | | | | Split the device_control callback of the Marvell MMP PDMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: k3: Split device_controlMaxime Ripard2014-12-221-90/+107
| | | | | | | | | Split the device_control callback of the Hisilicon K3 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: ipu-idmac: Split device_controlMaxime Ripard2014-12-221-45/+51
| | | | | | | | | Split the device_control callback of the IPU IDMAC driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: intel-mid-dma: Split device_controlMaxime Ripard2014-12-221-19/+6
| | | | | | | | | Split the device_control callback of the Intel MID DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: imx-sdma: Split device_controlMaxime Ripard2014-12-221-36/+30
| | | | | | | | | Split the device_control callback of the Freescale IMX SDMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: imx: Split device_controlMaxime Ripard2014-12-221-52/+51
| | | | | | | | | Split the device_control callback of the Freescale IMX DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: fsl-edma: Split device_controlMaxime Ripard2014-12-221-48/+58
| | | | | | | | | Split the device_control callback of the Freescale EDMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: ep93xx: Split device_controlMaxime Ripard2014-12-221-34/+7
| | | | | | | | | Split the device_control callback of the Cirrus Logic EP93xx driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: edma: Split device_controlMaxime Ripard2014-12-221-35/+15
| | | | | | | | | Split the device_control callback of the TI EDMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: dw: Split device_controlMaxime Ripard2014-12-221-38/+44
| | | | | | | | | Split the device_control callback of the DesignWare DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: jz4740: Split device_controlMaxime Ripard2014-12-221-17/+3
| | | | | | | | | Split the device_control callback of the JZ4740 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: cppi41: Split device_controlMaxime Ripard2014-12-221-29/+1
| | | | | | | | | Split the device_control callback of the TI CPPI41 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: coh901318: Split device_controlMaxime Ripard2014-12-221-77/+60
| | | | | | | | | | Split the device_control callback of the ST-Ericsson COH901318 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: bcm2835: Split device_controlMaxime Ripard2014-12-221-23/+8
| | | | | | | | | | Split the device_control callback of the Broadcom BCM2835 DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: at_xdmac: split device_controlLudovic Desroches2014-12-221-37/+57
| | | | | | | | Use newly introduced callbacks. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: hdmac: Split device_controlMaxime Ripard2014-12-221-48/+73
| | | | | | | | | | Split the device_control callback of the Atmel HDMAC driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-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>
* dmaengine: pl08x: Split device_controlMaxime Ripard2014-12-221-66/+90
| | | | | | | | | Split the device_control callback of the AMBA PL08x DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: Create a generic dma_slave_caps callbackMaxime Ripard2014-12-221-4/+37
| | | | | | | | | | | | | | | | | | | | dma_slave_caps is very important to the generic layers that might interact with dmaengine, such as ASoC. Unfortunately, it has been added as yet another dma_device callback, and most of the existing drivers haven't implemented it, reducing its reliability. Introduce a generic behaviour to implement this, that rely on both the split of device_control to derive which functions are supported and on new variables to be set in the dma_device structure. These variables holds what used to be the capabilities, that were set per-channel. However, this proved to be a bit overkill, since every driver filling these so far were hardcoding it, disregarding which channel was actually given. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: Remove the need to declare device_controlMaxime Ripard2014-12-221-2/+0
| | | | | | | | | | In order to migrate the drivers without triggering a BUG_ON for the converted drivers, which would cause bisectability issues, we need to remove that check before removing the device_control function entirely. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: Add device_terminate_all callbackMaxime Ripard2014-12-221-0/+6
| | | | | | | | | | | | Split out the terminate_all command from device_control to a dma_device callback. In order to preserve backward capability, still rely on device_control if no such callback has been implemented. Eventually, this will allow to create a generic dma_slave_caps callback. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: split out pause/resume operations from device_controlMaxime Ripard2014-12-221-0/+12
| | | | | | | | | | | | | Split out the pause and resume operations to callbacks of their own. In order to preserve some backwark compatibility, the dmaengine_pause/dmaengine_resume are still falling back on dmaengine_device_control. Eventually, that will allow to get the device capabilities in a generic way, removing the need to implement device_slave_caps. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: Introduce a device_config callbackMaxime Ripard2014-12-221-0/+8
| | | | | | | | | | | | | | The fact that the channel configuration is done in device_control is rather misleading, since it's not really advertised as such, plus, the fact that the framework exposes a function of its own makes it not really intuitive, while we're losing the type checking whenever we pass that unsigned long argument. Add a device_config callback to dma_device, with a fallback on the old behaviour for now for existing drivers to opt in. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: Make channel allocation callbacks optionalMaxime Ripard2014-12-221-7/+11
| | | | | | | | | | | | Nowadays, some drivers don't have anything in there channel allocation callbacks anymore. Remove the BUG_ON if those callbacks aren't implemented, in order to allow drivers to not implement them. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: Rework dma_chan_getMaxime Ripard2014-12-221-17/+19
| | | | | | | | | | dma_chan_get uses a rather interesting error handling and code path. Change it to something more usual in the kernel. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: Make the destination abbreviation coherentMaxime Ripard2014-12-2210-13/+13
| | | | | | | | | | | The dmaengine header abbreviates destination as at least two different strings. Make a coherent use of a single one. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* crypto: ux500: Use dmaengine_terminate_all APIMaxime Ripard2014-12-222-3/+3
| | | | | | | | We are removing the dmaengine_device_control API, that shouldn't even have been exposed in the first place. Change the callers to use the proper API. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* Linux 3.19-rc1v3.19-rc1Linus Torvalds2014-12-211-2/+2
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* Merge tag 'for-linus' of ↵Linus Torvalds2014-12-2110-25/+103
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux Pull ACCESS_ONCE cleanup preparation from Christian Borntraeger: "kernel: Provide READ_ONCE and ASSIGN_ONCE As discussed on LKML http://marc.info/?i=54611D86.4040306%40de.ibm.com ACCESS_ONCE might fail with specific compilers for non-scalar accesses. Here is a set of patches to tackle that problem. The first patch introduce READ_ONCE and ASSIGN_ONCE. If the data structure is larger than the machine word size memcpy is used and a warning is emitted. The next patches fix up several in-tree users of ACCESS_ONCE on non-scalar types. This does not yet contain a patch that forces ACCESS_ONCE to work only on scalar types. This is targetted for the next merge window as Linux next already contains new offenders regarding ACCESS_ONCE vs. non-scalar types" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux: s390/kvm: REPLACE barrier fixup with READ_ONCE arm/spinlock: Replace ACCESS_ONCE with READ_ONCE arm64/spinlock: Replace ACCESS_ONCE READ_ONCE mips/gup: Replace ACCESS_ONCE with READ_ONCE x86/gup: Replace ACCESS_ONCE with READ_ONCE x86/spinlock: Replace ACCESS_ONCE with READ_ONCE mm: replace ACCESS_ONCE with READ_ONCE or barriers kernel: Provide READ_ONCE and ASSIGN_ONCE
| * s390/kvm: REPLACE barrier fixup with READ_ONCEChristian Borntraeger2014-12-181-12/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | ACCESS_ONCE does not work reliably on non-scalar types. For example gcc 4.6 and 4.7 might remove the volatile tag for such accesses during the SRA (scalar replacement of aggregates) step (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145) Commit 1365039d0cb3 ("KVM: s390: Fix ipte locking") replace ACCESS_ONCE with barriers. Lets use READ_ONCE instead. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * arm/spinlock: Replace ACCESS_ONCE with READ_ONCEChristian Borntraeger2014-12-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | ACCESS_ONCE does not work reliably on non-scalar types. For example gcc 4.6 and 4.7 might remove the volatile tag for such accesses during the SRA (scalar replacement of aggregates) step (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145) Change the spinlock code to replace ACCESS_ONCE with READ_ONCE. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| * arm64/spinlock: Replace ACCESS_ONCE READ_ONCEChristian Borntraeger2014-12-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | ACCESS_ONCE does not work reliably on non-scalar types. For example gcc 4.6 and 4.7 might remove the volatile tag for such accesses during the SRA (scalar replacement of aggregates) step (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145) Change the spinlock code to replace ACCESS_ONCE with READ_ONCE. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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