aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/dma/qcom (follow)
AgeCommit message (Collapse)AuthorFilesLines
2017-03-27dmaengine: qcom_hidma: pause the channel on shutdownSinan Kaya1-0/+15
We need to ensure that all DMAs and interrupts are cleared during shutdown operation in order for kexec to start the next kernel clearly. Otherwise, HW could be performing a DMA into random addresses in the middle of second kernel start. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2017-03-27dmaengine: qcom_hidma: disable/enable IRQs on pause/resumeSinan Kaya1-0/+6
Once the channels are stopped, disable interrupts to make sure no new HW interaction can happen. Similarly, re-enable the interrupts only if we know that channel is operational again. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-23dmaengine: qcom_hidma: autoload while probing ACPISinan Kaya2-0/+2
MODULE_DEVICE_TABLE is used by the kernel to determine which device driver should be loaded for which platform device. MODULE_DEVICE_TABLE has been only defined for the device-tree based platforms in the current code. Defining it also for ACPI based platforms. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-15dmaengine: qcom_hidma: cleanup sysfs entries during removeSinan Kaya2-6/+24
The 4.8-rc8 kernel is printing duplicate file entry warnings while removing the HIDMA object. This is caused by stale sysfs entries remaining from the previous execution. _sysfs_warn_dup+0x5c/0x78 sysfs_add_file_mode_ns+0x13c/0x1c0 sysfs_create_file_ns+0x2c/0x40 device_create_file+0x54/0xa0 hidma_probe+0x7c8/0x808 Create hidma_sysfs_init and hidma_sysfs_uninit functions and call them from the probe and remove path. To do proper clean up, adding the attrs object to the device data structure to keep it around until remove call is made. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-14dmaengine: qcom_hidma: hide MSI handler when unusedArnd Bergmann1-0/+2
The newly added MSI support causes a harmless warning when MSI is disabled: drivers/dma/qcom/hidma.c:558:20: error: 'hidma_chirq_handler_msi' defined but not used [-Werror=unused-function] This adds another #ifdef to match that around the users of the function. Fixes: 1c0e3e82a7fb ("dmaengine: qcom_hidma: add MSI support for interrupts") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-14dmaengine: qcom_hidma: remove unneeded of_node_put()Wei Yongjun1-1/+0
Device node iterators put the previous value of the index variable, so an explicit put causes a double put. Generated by: scripts/coccinelle/iterators/device_node_continue.cocci Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-03dmaengine: qcom_hidma: add MSI support for interruptsSinan Kaya3-6/+147
The interrupts can now be delivered as platform MSI interrupts on newer platforms. The code looks for a new OF and ACPI strings in order to enable the functionality. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-03dmaengine: qcom_hidma: protect common data structuresSinan Kaya1-33/+11
When MSI interrupts are supported, error and the transfer interrupt can come from multiple processor contexts. Each error interrupt is an MSI interrupt. If the channel is disabled by the first error interrupt, the remaining error interrupts will gracefully return in the interrupt handler. If an error is observed while servicing the completions in success case, the posting of the completions will be aborted as soon as channel disabled state is observed. The error interrupt handler will take it from there and finish the remaining completions. We don't want to create multiple success and error messages to be delivered to the client in mixed order. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-03dmaengine: qcom_hidma: bring out interrupt causeSinan Kaya1-29/+33
Bring out the interrupt cause to the top level so that MSI interrupts can be hooked at a later stage. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-03dmaengine: qcom_hidma: make pending_tre_count atomicSinan Kaya3-9/+9
Getting ready for the MSI interrupts. The pending_tre_count is used in the interrupt handler to make sure all outstanding requests are serviced. The driver will allocate 11 MSI interrupts. Each MSI interrupt can be assigned to a different CPU. Then, we have a race condition for common variables as they share the same interrupt handler with a different cause bit and they can potentially be executed in parallel. Making this variable atomic so that it can be updated from multiple processor contexts. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-10-19dmaengine: qcom_hidma: break completion processing on errorSinan Kaya1-0/+7
We try to consume as much successful transfers as possible. Now that we support MSI interrupts, an error interrupt might be observed by another processor while we are finishing the successful ones. Try to abort successful processing if this is the case. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-10-19dmaengine: qcom_hidma: add a common API to setup the interruptSinan Kaya2-4/+25
Introducing the hidma_ll_setup_irq function to set up the interrupt type externally from the OS interface. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-10-19dmaengine: qcom_hidma: configure DMA and MSI for OFSinan Kaya1-1/+8
Configure the DMA bindings for the device tree based firmware. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-10-19dmaengine: qcom_hidma: remove useless debugfs file removalSinan Kaya1-1/+0
Since 'commit acc29fb8f792 ("debugfs: ->d_parent is never NULL or negative")', HIDMA object removal is no longer working. This is due to redundant debugfs remove call in hidma_debug_uninit. debugfs_remove_recursive(dmadev->debugfs); debugfs_remove_recursive(dmadev->stats); The first remove is for the directory. Second remove is for the file under the directory. The directory remove makes file remove invalid. Unable to handle kernel NULL pointer dereference at virtual address [<ffff00000889f480>] down_write+0x18/0x68 [<ffff00000831c220>] debugfs_remove_recursive+0x50/0x1c0 [<ffff00000848e0a8>] hidma_debug_uninit+0x20/0x30 [<ffff00000848c5d8>] hidma_remove+0x48/0x98 [<ffff000008511b6c>] platform_drv_remove+0x24/0x68 [<ffff00000850fac8>] __device_release_driver+0x80/0x118 [<ffff00000850fb84>] device_release_driver+0x24/0x38 [<ffff00000850e928>] unbind_store+0xe8/0x110 [<ffff00000850dd30>] drv_attr_store+0x20/0x30 [<ffff000008253a48>] sysfs_kf_write+0x48/0x58 [<ffff000008252dd8>] kernfs_fop_write+0xb0/0x1d8 [<ffff0000081dab3c>] __vfs_write+0x1c/0x110 [<ffff0000081db940>] vfs_write+0xa0/0x1b8 [<ffff0000081dcd34>] SyS_write+0x44/0xa0 [<ffff000008082ef0>] el0_svc_naked+0x24/0x28 Removing the second line. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-10-18dmaengine: qcom_hidma: prevent disable in errorSinan Kaya1-13/+2
When an error is observed, we try to disable the channel and prevent further accesses from the client. Depending on the type of error, transitioning into disabled state might not be possible. Adding a check to make sure that HW is in enabled/running state before the disable transition happens. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31dmaengine: qcom_hidma: add error reporting for tx_statusSinan Kaya3-31/+33
The HIDMA driver is capable of error detection. However, the error was not being passed back to the client when tx_status API is called. Changing the error handling behavior to follow this oder. 1. dmaengine asserts error interrupt 2. Driver receives and mark's the txn as error 3. Driver completes the txn and intimates the client. No further submissions. Drop the locks before calling callback, as subsequent processing by client maybe in callback thread. 4. Client invokes status and you can return error 5. On error, client calls terminate_all. You can reset channel, free all descriptors in the active, pending and completed lists 6. Client prepares new txn and so on. As part of this work, got rid of the reset in the interrupt handler when an error happens and the HW is put into disabled state. The only way to recover is for the client to terminate the channel. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31dmaengine: qcom_hidma: report transfer errors with new interfaceSinan Kaya1-2/+8
Pass the DMA errors to the client by passing a result argument. The HW only supports a generic error when something goes wrong. That's why, using DMA_TRANS_ABORTED all the time. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-31dmaengine: qcom_hidma: release the descriptor before the callbackSinan Kaya1-8/+10
There is a race condition between data transfer callback and descriptor free code. The callback routine may decide to clear the resources even though the descriptor has not yet been freed. Instead of calling the callback first and then releasing the memory, this code is changing the order to return the descriptor back to the free pool and then call the user provided callback. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-08-08dmaengine: qcom_hidma: convert callback to helper functionDave Jiang1-8/+3
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 <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-07-28Merge branch 'topic/dmaengine_cleanups' into for-linusVinod Koul2-0/+2
2016-07-24dmaengine: qcom_hidma: use for_each_matching_node() macroWei Yongjun1-2/+1
Use for_each_matching_node() macro instead of open coding it. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-07-23dmaengine: qcom_hidma_lli: kill the tasklets upon exitVinod Koul1-0/+1
drivers should ensure that tasklets are killed, so that they can't be run after driver remove is executed Signed-off-by: Vinod Koul <vinod.koul@intel.com> Cc: Sinan Kaya <okaya@codeaurora.org>
2016-07-23dmaengine: qcom_hidma: kill the tasklets upon exitVinod Koul1-0/+1
drivers should ensure that tasklets are killed, so that they can't be run after driver remove is executed Signed-off-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Sinan Kaya <okaya@codeaurora.org>
2016-07-16Merge branch 'topic/bam' into for-linusVinod Koul1-1/+108
2016-07-12dmaengine: qcom_hidma: fix return value check in hidma_mgmt_of_populate_channels()Wei Yongjun1-2/+2
In case of error, the function platform_device_register_full() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-07-06dmaengine: qcom-bam-dma: add __maybe_unused annotations for PMArnd Bergmann1-6/+5
The bam_dma driver gained runtime PM support, but that causes build warnings whenever CONFIG_PM is disabled: drivers/dma/qcom/bam_dma.c:1324:12: error: 'bam_dma_runtime_resume' defined but not used [-Werror=unused-function] static int bam_dma_runtime_resume(struct device *dev) ^~~~~~~~~~~~~~~~~~~~~~ drivers/dma/qcom/bam_dma.c:1315:12: error: 'bam_dma_runtime_suspend' defined but not used [-Werror=unused-function] static int bam_dma_runtime_suspend(struct device *dev) This removes the incomplete #ifdef guard and instead marks all four PM functions as __maybe_unused, which avoids this kind of warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 7d2545599f5b ("dmaengine: qcom-bam-dma: Add pm_runtime support") Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-06-30dmaengine: qcom-bam-dma: Add pm_runtime supportPramod Gurav1-1/+109
Adds pm_runtime support for BAM DMA so that clock is enabled only when there is a transaction going on to help save power. Signed-off-by: Pramod Gurav <pramod.gurav@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-05-14dmaengine: qcom_hidma: add support for object hierarchySinan Kaya2-5/+147
In order to create a relationship model between the channels and the management object, we are adding support for object hierarchy to the drivers. This patch simplifies the userspace application development. We will not have to traverse different firmware paths based on device tree or ACPI based kernels. No matter what flavor of kernel is used, objects will be represented as platform devices. The new layout is as follows: hidmam_10: hidma-mgmt@0x5A000000 { compatible = "qcom,hidma-mgmt-1.0"; ... hidma_10: hidma@0x5a010000 { compatible = "qcom,hidma-1.0"; ... } } The hidma_mgmt_init detects each instance of the hidma-mgmt-1.0 objects in device tree and calls into the channel driver to create platform devices for each child of the management object. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-05-14dmaengine: qcom_hidma: add debugfs hooksSinan Kaya4-2/+224
Add debugfs hooks for debugging the execution behavior of the DMA channel. The debugfs hooks get initialized by the probe function and uninitialized by the remove function. A stats file is created in debugfs. The stats file will show the information about each HIDMA channel as well as each asynchronous job queued and completed at a given time. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-05-14dmaengine: qcom_hidma: implement lower level hardware interfaceSinan Kaya4-25/+895
This patch implements the hardware hooks for the HIDMA channel driver. The main functions of interest are: - hidma_ll_init - hidma_ll_request - hidma_ll_queue_request - hidma_ll_hw_start OS layer calls the hidma_ll_init function during probe to set up the hardware. At this moment, the number of supported descriptors are also given. On each request, a descriptor is allocated from the free pool and filled in with the transfer parameters. Multiple requests can be queued into the hardware via the OS interface. When client is ready for requests to be executed, start method is called. Completions are delivered via callbacks via tasklet. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-04-19dmaengine: qcom: bam_dma: rename BAM_MAX_DATA_SIZE defineStanimir Varbanov1-8/+8
It seems that the define has not been with acurate name and makes confusion while reading the code. The more acurate name should be BAM_FIFO_SIZE. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Reviewed-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-04-19dmaengine: qcom: bam_dma: use correct pipe FIFO sizeStanimir Varbanov1-1/+1
The pipe fifo size register must instruct the bam hw how many hw descriptors can be pushed to fifo. Currently we instruct the hw with 32KBytes but wrap the tail in bam_start_dma in BAM_P_EVNT_REG on 4095 i.e. 32760. This leads to stalled transactions when the tail wraps. Fix this by use the correct fifo size in BAM_P_FIFO_SIZES register i.e. 32K - 8. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-04-19dmaengine: qcom: bam_dma: add controlled-remotely dt propertyStanimir Varbanov1-0/+7
Some of the peripherals has bam which is controlled by remote processor, thus the bam dma driver must avoid register writes which initialise bam hw block. Those registers are protected from xPU block and any writes to them will lead to secure violation and system reboot. Adding the contolled_remotely flag in bam driver to avoid not permitted register writes in bam_init function. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Reviewed-by: Andy Gross <andy.gross@linaro.org> Tested-by: Pramod Gurav <gpramod@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-04-19dmaengine: qcom: bam_dma: clear BAM interrupt only if it is raisedStanimir Varbanov1-4/+8
Currently we write BAM_IRQ_CLR register with zero even when no BAM_IRQ occured. This write has some bad side effects when the BAM instance is for the crypto engine. In case of crypto engine some of the BAM registers are xPU protected and they cannot be controlled by the driver. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Reviewed-by: Andy Gross <andy.gross@linaro.org> Tested-by: Pramod Gurav <gpramod@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-04-19dmaengine: qcom: bam_dma: fix dma free memory on removeStanimir Varbanov1-0/+3
Building the driver as a module and when removing the already inserted module gives below: [ 1389.392788] Unable to handle kernel paging request at virtual address ffffffbdc000001c [ 1389.421321] pgd = ffffffc02fa87000 [ 1389.447899] [ffffffbdc000001c] *pgd=0000000000000000, *pud=0000000000000000 [ 1389.460142] Internal error: Oops: 96000006 [#1] PREEMPT SMP [ 1389.466963] Modules linked in: qcom_bam_dma(-) [ 1389.486608] CPU: 2 PID: 2442 Comm: rmmod Not tainted 4.2.0+ #407 [ 1389.493885] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) [ 1389.501196] task: ffffffc035bae2c0 ti: ffffffc0368a8000 task.ti: ffffffc0368a8000 [ 1389.508566] PC is at __free_pages+0xc/0x40 [ 1389.515893] LR is at free_pages.part.93+0x30/0x38 [ 1389.523141] pc : [<ffffffc00016180c>] lr : [<ffffffc00016197c>] pstate: 80000145 [ 1389.530602] sp : ffffffc0368abc20 [ 1389.537931] x29: ffffffc0368abc20 x28: ffffffc0368a8000 [ 1389.549153] x27: 0000000000000000 x26: 0000000000000000 [ 1389.560412] x25: ffffffc000cb2000 x24: 0000000000000170 [ 1389.571530] x23: 0000000000000004 x22: ffffffc036bc5010 [ 1389.582721] x21: ffffffc036bc5010 x20: 0000000000000000 [ 1389.593981] x19: 0000000000000002 x18: 0000007fcbc8e8b0 [ 1389.605301] x17: 0000007f9b8226ec x16: ffffffc0002089e8 [ 1389.616647] x15: 0000007f9b8a0588 x14: 0ffffffffffffffc [ 1389.628039] x13: 0000000000000030 x12: 0000000000000000 [ 1389.639436] x11: 0000000000000008 x10: ffffffc000ecc000 [ 1389.650872] x9 : ffffffc035bae2c0 x8 : ffffffc035bae9a8 [ 1389.662367] x7 : ffffffc035bae9a0 x6 : 0000000000000000 [ 1389.673906] x5 : ffffffbdc000001c x4 : 0000000080000000 [ 1389.685475] x3 : ffffffbdc0000000 x2 : 0000004080000000 [ 1389.697049] x1 : 0000000000000003 x0 : ffffffbdc0000000 The memory has been already freed by bam_free_chan() so fix this by skiping already freed memory. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Reviewed-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-03-17Merge tag 'dmaengine-4.6-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds8-0/+2796
Pull dmaengine updates from Vinod Koul: "This is smallish update with minor changes to core and new driver and usual updates. Nothing super exciting here.. - We have made slave address as physical to enable driver to do the mapping. - We now expose the maxburst for slave dma as new capability so clients can know this and program accordingly - addition of device synchronize callbacks on omap and edma. - pl330 updates to support DMAFLUSHP for Rockchip platforms. - Updates and improved sg handling in Xilinx VDMA driver. - New hidma qualcomm dma driver, though some bits are still in progress" * tag 'dmaengine-4.6-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (40 commits) dmaengine: IOATDMA: revise channel reset workaround on CB3.3 platforms dmaengine: add Qualcomm Technologies HIDMA channel driver dmaengine: add Qualcomm Technologies HIDMA management driver dmaengine: hidma: Add Device Tree binding dmaengine: qcom_bam_dma: move to qcom directory dmaengine: tegra: Move of_device_id table near to its user dmaengine: xilinx_vdma: Remove unnecessary variable initializations dmaengine: sirf: use __maybe_unused to hide pm functions dmaengine: rcar-dmac: clear pertinence number of channels dmaengine: sh: shdmac: don't open code of_device_get_match_data() dmaengine: tegra: don't open code of_device_get_match_data() dmaengine: qcom_bam_dma: Make driver work for BE dmaengine: sun4i: support module autoloading dma/mic_x100_dma: IS_ERR() vs PTR_ERR() typo dmaengine: xilinx_vdma: Use readl_poll_timeout instead of do while loop's dmaengine: xilinx_vdma: Simplify spin lock handling dmaengine: xilinx_vdma: Fix issues with non-parking mode dmaengine: xilinx_vdma: Improve SG engine handling dmaengine: pl330: fix to support the burst mode dmaengine: make slave address physical ...
2016-03-11dmaengine: add Qualcomm Technologies HIDMA channel driverSinan Kaya3-0/+876
This patch adds support for hidma engine. The driver consists of two logical blocks. The DMA engine interface and the low-level interface. The hardware only supports memcpy/memset and this driver only support memcpy interface. HW and driver doesn't support slave interface. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-03-11dmaengine: add Qualcomm Technologies HIDMA management driverSinan Kaya5-0/+649
The Qualcomm Technologies HIDMA device has been designed to support virtualization technology. The driver has been divided into two to follow the hardware design. 1. HIDMA Management driver 2. HIDMA Channel driver Each HIDMA HW consists of multiple channels. These channels share some set of common parameters. These parameters are initialized by the management driver during power up. Same management driver is used for monitoring the execution of the channels. Management driver can change the performance behavior dynamically such as bandwidth allocation and prioritization. The management driver is executed in host context and is the main management entity for all channels provided by the device. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-03-11dmaengine: qcom_bam_dma: move to qcom directorySinan Kaya3-0/+1271
Creating a QCOM directory for all QCOM DMA source files. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Reviewed-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>