Commit graph

3271 commits

Author SHA1 Message Date
Thomas Gleixner
8b0e195314 ktime: Cleanup ktime_set() usage
ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
2016-12-25 17:21:22 +01:00
Linus Torvalds
e3842cbfe0 dmaengine updates for 4.10-rc1
Fairly routine update this time around with all changes specific to drivers.
 
  o New driver for STMicroelectronics FDMA
  o Memory-to-memory transfers on dw dmac
  o Support for slave maps on pl08x devices
  o Bunch of driver fixes to use dma_pool_zalloc
  o Bunch of compile and warning fixes spread across drivers
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Merge tag 'dmaengine-4.10-rc1' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine updates from Vinod Koul:
 "Fairly routine update this time around with all changes specific to
  drivers:

   - New driver for STMicroelectronics FDMA
   - Memory-to-memory transfers on dw dmac
   - Support for slave maps on pl08x devices
   - Bunch of driver fixes to use dma_pool_zalloc
   - Bunch of compile and warning fixes spread across drivers"

[ The ST FDMA driver already came in earlier through the remoteproc tree ]

* tag 'dmaengine-4.10-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (68 commits)
  dmaengine: sirf-dma: remove unused ‘sdesc’
  dmaengine: pl330: remove unused ‘regs’
  dmaengine: s3c24xx: remove unused ‘cdata’
  dmaengine: stm32-dma: remove unused ‘src_addr’
  dmaengine: stm32-dma: remove unused ‘dst_addr’
  dmaengine: stm32-dma: remove unused ‘sfcr’
  dmaengine: pch_dma: remove unused ‘cookie’
  dmaengine: mic_x100_dma: remove unused ‘data’
  dmaengine: img-mdc: remove unused ‘prev_phys’
  dmaengine: usb-dmac: remove unused ‘uchan’
  dmaengine: ioat: remove unused ‘res’
  dmaengine: ioat: remove unused ‘ioat_dma’
  dmaengine: ioat: remove unused ‘is_raid_device’
  dmaengine: pl330: do not generate unaligned access
  dmaengine: k3dma: move to dma_pool_zalloc
  dmaengine: at_hdmac: move to dma_pool_zalloc
  dmaengine: at_xdmac: don't restore unsaved status
  dmaengine: ioat: set error code on failures
  dmaengine: ioat: set error code on failures
  dmaengine: DW DMAC: add multi-block property to device tree
  ...
2016-12-14 20:42:45 -08:00
Vinod Koul
4625d2a513 Merge branch 'topic/st_fdma' into for-linus 2016-12-14 09:07:07 +05:30
Vinod Koul
57fb7ee10c Merge branch 'topic/s3c64xx' into for-linus 2016-12-14 09:07:02 +05:30
Vinod Koul
90644ad7f2 Merge branch 'topic/qcom' into for-linus 2016-12-14 09:06:54 +05:30
Vinod Koul
83cb0dcaf1 Merge branch 'topic/pxa' into for-linus 2016-12-14 09:06:45 +05:30
Vinod Koul
db82df3e81 Merge branch 'topic/omap' into for-linus 2016-12-14 09:06:30 +05:30
Vinod Koul
3f809e844c Merge branch 'topic/ioat' into for-linus 2016-12-14 09:06:23 +05:30
Linus Torvalds
edc57ea92c remoteproc updates for v4.10
Introduces remoteproc "subdevice" support, which allows remoteproc
 driver to associate devices to the "running" state of the remoteproc,
 allowing devices to be probed and removed as the remote processor is
 booted, shut down or recovering from a crash.
 
 Handling of virtio device resources was improved, vring memory is now
 allocated as part of other memory allocation. This ensures that all
 vrings for all virtio devices are allocated before we boot the remote
 processor.
 
 The debugfs mechanism for starting and stopping remoteproc instances was
 replaced with a sysfs interface, also providing a mechanism for
 specifying firmware to use by the instance. This allows user space to
 load and boot use case specific firmware on remote processors.
 
 New drivers for the ST Slimcore and Qualcomm Hexagon DSP as well as
 removal of the unused StE modem loader.
 
 Finally support for crash recovery in the Qualcomm Wirelss subsystem
 (used for WiFi/BT/FM on a number of platforms) and a number of bug fixes
 and cleanups.
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Merge tag 'rproc-v4.10' of git://github.com/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:

 - introduce remoteproc "subdevice" support, which allows remoteproc
   driver to associate devices to the "running" state of the remoteproc,
   allowing devices to be probed and removed as the remote processor is
   booted, shut down or recovering from a crash.

 - handling of virtio device resources was improved, vring memory is now
   allocated as part of other memory allocation. This ensures that all
   vrings for all virtio devices are allocated before we boot the remote
   processor.

 - the debugfs mechanism for starting and stopping remoteproc instances
   was replaced with a sysfs interface, also providing a mechanism for
   specifying firmware to use by the instance. This allows user space to
   load and boot use case specific firmware on remote processors.

 - new drivers for the ST Slimcore and Qualcomm Hexagon DSP as well as
   removal of the unused StE modem loader.

 - finally support for crash recovery in the Qualcomm Wirelss subsystem
   (used for WiFi/BT/FM on a number of platforms) and a number of bug
   fixes and cleanups

* tag 'rproc-v4.10' of git://github.com/andersson/remoteproc: (49 commits)
  remoteproc: qcom_adsp_pil: select qcom_scm
  remoteproc: Drop wait in __rproc_boot()
  remoteproc/ste: Delete unused driver
  remoteproc: Remove "experimental" warning
  remoteproc: qcom_adsp_pil: select qcom_scm
  dt-binding: soc: qcom: smd: Add label property
  remoteproc: qcom: mdt_loader: add include for sizes
  remoteproc: Update last rproc_put users to rproc_free
  remoteproc: qcom: adsp: Add missing MODULE_DEVICE_TABLE
  remoteproc: wcnss-pil: add QCOM_SMD dependency
  dmaengine: st_fdma: Revert: "Revert: Update st_fdma to 'depends on REMOTEPROC'"
  remoteproc: Add support for xo clock
  remoteproc: adsp-pil: fix recursive dependency
  remoteproc: Introduce Qualcomm ADSP PIL
  dt-binding: remoteproc: Introduce ADSP loader binding
  remoteproc: qcom_wcnss: Fix circular module dependency
  remoteproc: Merge table_ptr and cached_table pointers
  remoteproc: Remove custom vdev handler list
  remoteproc: Update max_notifyid as we allocate vrings
  remoteproc: Decouple vdev resources and devices
  ...
2016-12-13 08:49:12 -08:00
Linus Torvalds
212f30008a Merge branch 'x86-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 idle updates from Ingo Molnar:
 "There were two bigger changes in this development cycle:

   - remove idle notifiers:

       32 files changed, 74 insertions(+), 803 deletions(-)

     These notifiers were of questionable value and the main usecase,
     the i7300 driver, was essentially unmaintained and can be removed,
     plus modern power management concepts don't need the callback - so
     use this golden opportunity and get rid of this opaque and fragile
     callback from a latency sensitive code path.

     (Len Brown, Thomas Gleixner)

   - improve the AMD Erratum 400 workaround that used high overhead MSR
     polling in the idle loop (Borisla Petkov, Thomas Gleixner)"

* 'x86-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Remove empty idle.h header
  x86/amd: Simplify AMD E400 aware idle routine
  x86/amd: Check for the C1E bug post ACPI subsystem init
  x86/bugs: Separate AMD E400 erratum and C1E bug
  x86/cpufeature: Provide helper to set bugs bits
  x86/idle: Remove enter_idle(), exit_idle()
  x86: Remove x86_test_and_clear_bit_percpu()
  x86/idle: Remove is_idle flag
  x86/idle: Remove idle_notifier
  i7300_idle: Remove this driver
2016-12-12 14:55:04 -08:00
Vinod Koul
2ef7ff03a9 dmaengine: sirf-dma: remove unused ‘sdesc’
In sirfsoc_dma_pm_suspend(), variable ‘sdesc’ is initialized but never used, which
leads to warning with W=1.

drivers/dma/sirf-dma.c: In function 'sirfsoc_dma_pm_suspend':
drivers/dma/sirf-dma.c:1014:27: warning: variable 'sdesc' set but not used [-Wunused-but-set-variable]

So remove it.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
920e00d62e dmaengine: pl330: remove unused ‘regs’
In pl330_add(), variable ‘regs’ is initialized but never used, which
leads to warning with W=1.

drivers/dma/pl330.c: In function 'pl330_add':
drivers/dma/pl330.c:1891:16: warning: variable 'regs' set but not used [-Wunused-but-set-variable]

So remove it.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
963173fe48 dmaengine: s3c24xx: remove unused ‘cdata’
In s3c24xx_dma_get_phy(), variable ‘cdata’ is initialized but never used, which
leads to warning with W=1. Removing this make pdata unused.

drivers/dma/s3c24xx-dma.c: In function ‘s3c24xx_dma_get_phy’:
drivers/dma/s3c24xx-dma.c:293:30: warning: variable ‘cdata’ set but not used [-Wunused-but-set-variable]
  struct s3c24xx_dma_channel *cdata;

So remove both of them.

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
cad0eca39f dmaengine: stm32-dma: remove unused ‘src_addr’
In stm32_dma_set_xfer_param(), variable ‘src_addr’ is initialized but never used, which
leads to warning with W=1

drivers/dma/stm32-dma.c: In function ‘stm32_dma_set_xfer_param’:
drivers/dma/stm32-dma.c:577:13: warning: variable ‘src_addr’ set but not used [-Wunused-but-set-variable]
  dma_addr_t src_addr, dst_addr;

So remove it.

Reviewed-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
2a440bd417 dmaengine: stm32-dma: remove unused ‘dst_addr’
In stm32_dma_set_xfer_param(), variable ‘dst_addr’ is initialized but never used, which
leads to warning with W=1

drivers/dma/stm32-dma.c: In function ‘stm32_dma_set_xfer_param’:
drivers/dma/stm32-dma.c:577:23: warning: variable ‘dst_addr’ set but not used [-Wunused-but-set-variable]
  dma_addr_t src_addr, dst_addr;

So remove it.

Reviewed-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
1bc4f06c24 dmaengine: stm32-dma: remove unused ‘sfcr’
In stm32_dma_chan_irq(), variable ‘sfcr’ is initialized but never used, which
leads to warning with W=1

drivers/dma/stm32-dma.c: In function ‘stm32_dma_chan_irq’:
drivers/dma/stm32-dma.c:530:19: warning: variable ‘sfcr’ set but not used [-Wunused-but-set-variable]
  u32 status, scr, sfcr;

So remove it.

Reviewed-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
b33f7832bb dmaengine: pch_dma: remove unused ‘cookie’
In pd_tx_submit(), variable ‘cookie’ is initialized but never used, which
leads to warning with W=1

drivers/dma/pch_dma.c: In function ‘pd_tx_submit’:
drivers/dma/pch_dma.c:420:15: warning: variable ‘cookie’ set but not used [-Wunused-but-set-variable]
  dma_cookie_t cookie;

So remove it.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
765d2a6548 dmaengine: mic_x100_dma: remove unused ‘data’
In mic_dma_init(), variable ‘data’ is initialized but never used, which
leads to warning with W=1

drivers/dma/mic_x100_dma.c: In function ‘mic_dma_init’:
drivers/dma/mic_x100_dma.c:557:17: warning: variable ‘data’ set but not used [-Wunused-but-set-variable]
   unsigned long data;

So remove it.

Cc: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
e5a6b3d5de dmaengine: img-mdc: remove unused ‘prev_phys’
In mdc_prep_dma_memcpy(), mdc_prep_dma_cyclic() and mdc_prep_slave_sg()
variable ‘prev_phys’ is initialized but never used, which
leads to warning with W=1

drivers/dma/img-mdc-dma.c: In function ‘mdc_prep_dma_memcpy’:
drivers/dma/img-mdc-dma.c:295:24: warning: variable ‘prev_phys’ set but not used [-Wunused-but-set-variable]
  dma_addr_t curr_phys, prev_phys;

drivers/dma/img-mdc-dma.c: In function ‘mdc_prep_dma_cyclic’:
drivers/dma/img-mdc-dma.c:378:24: warning: variable ‘prev_phys’ set but not used [-Wunused-but-set-variable]
  dma_addr_t curr_phys, prev_phys;

drivers/dma/img-mdc-dma.c: In function ‘mdc_prep_slave_sg’:
drivers/dma/img-mdc-dma.c:461:24: warning: variable ‘prev_phys’ set but not
used [-Wunused-but-set-variable]
  dma_addr_t curr_phys, prev_phys;

So remove it.

Cc: Damien.Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:22 +05:30
Vinod Koul
7833a31df7 dmaengine: usb-dmac: remove unused ‘uchan’
In usb_dmac_of_xlate(), variable ‘uchan’ is initialized but never used, which
leads to warning with W=1

drivers/dma/sh/usb-dmac.c: In function ‘usb_dmac_of_xlate’:
drivers/dma/sh/usb-dmac.c:655:24: warning: variable ‘uchan’ set but not used [-Wunused-but-set-variable]
  struct usb_dmac_chan *uchan;

So remove it.

Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:21 +05:30
Vinod Koul
eef2c22cc3 dmaengine: ioat: remove unused ‘res’
In __cleanup(), variable ‘res’ is initialized but never used, which
leads to warning with W=1

drivers/dma/ioat/dma.c: In function ‘__cleanup’:
drivers/dma/ioat/dma.c:614:28: warning: variable ‘res’ set but not used [-Wunused-but-set-variable]
    struct dmaengine_result res;

So remove it.

Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:21 +05:30
Vinod Koul
4cc8044148 dmaengine: ioat: remove unused ‘ioat_dma’
In ioat_tx_submit_unlock(), variable ‘ioat_dma’ is initialized but never
used, which leads to warning with W=1

drivers/dma/ioat/dma.c: In function ‘ioat_alloc_ring_ent’:
drivers/dma/ioat/dma.c:341:25: warning: variable ‘ioat_dma’ set but not used [-Wunused-but-set-variable]
  struct ioatdma_device *ioat_dma;

So remove it.

Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:21 +05:30
Vinod Koul
56c492f341 dmaengine: ioat: remove unused ‘is_raid_device’
In ioat3_dma_probe(), variable ‘is_raid_device’ is initialized but never
used, which leads to warning with W=1

drivers/dma/ioat/init.c: In function ‘ioat3_dma_probe’:
drivers/dma/ioat/init.c:1084:7: warning: variable ‘is_raid_device’ set
but not used [-Wunused-but-set-variable]
  bool is_raid_device = false;

So remove it.

Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-12 22:25:21 +05:30
Vladimir Murzin
d07c9e1e21 dmaengine: pl330: do not generate unaligned access
When PL330 is used with !MMU the following fault is seen:

Unhandled fault: alignment exception (0x801) at 0x8f26a002
Internal error: : 801 [#1] ARM
Modules linked in:
CPU: 0 PID: 640 Comm: dma0chan0-copy0 Not tainted 4.8.0-6a82063-clean+ #1600
Hardware name: ARM-Versatile Express
task: 8f1baa80 task.stack: 8e6fe000
PC is at _setup_req+0x4c/0x350
LR is at 0x8f2cbc00
pc : [<801ea538>]    lr : [<8f2cbc00>]    psr: 60000093
sp : 8e6ffdc0  ip : 00000000  fp : 00000000
r10: 00000000  r9 : 8f2cba10  r8 : 8f2cbc00
r7 : 80000013  r6 : 8f21a050  r5 : 8f21a000  r4 : 8f2ac800
r3 : 8e6ffe18  r2 : 00944251  r1 : ffffffbc  r0 : 8f26a000
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 00c5387c
Process dma0chan0-copy0 (pid: 640, stack limit = 0x8e6fe210)
Stack: (0x8e6ffdc0 to 0x8e700000)
fdc0: 00000001 60000093 00000000 8f2cba10 8f26a000 00000004 8f0ae000 8f2cbc00
fde0: 8f0ae000 8f2ac800 8f21a000 8f21a050 80000013 8f2cbc00 8f2cba10 00000000
fe00: 60000093 801ebca0 8e6ffe18 000013ff 40000093 00000000 00944251 8f2ac800
fe20: a0000013 8f2b1320 00001986 00000000 00000001 000013ff 8f1e4f00 8f2cba10
fe40: 8e6fff6c 801e9044 00000003 00000000 fef98c80 002faf07 8e6ffe7c 00000000
fe60: 00000002 00000000 00001986 8f1f158d 8f1e4f00 80568de4 00000002 00000000
fe80: 00001986 8f1f53ff 40000001 80580500 8f1f158d 8001e00c 00000000 cfdfdfdf
fea0: fdae2a25 00000001 00000004 8e6fe000 00000008 00000010 00000000 00000005
fec0: 8f2b1330 8f2b1334 8e6ffe80 8e6ffe8c 00001986 00000000 8f21a014 00000001
fee0: 8e6ffe60 8e6ffe78 00000002 00000000 000013ff 00000001 80568de4 8f1e8018
ff00: 0000158d 8055ec30 00000001 803f6b00 00001986 8f2cba10 fdae2a25 00000001
ff20: 8f1baca8 8e6fff24 8e6fff24 00000000 8e6fff24 ac6f3037 00000000 00000000
ff40: 00000000 8e6fe000 8f1e4f40 00000000 8f1e4f40 8f1e4f00 801e84ec 00000000
ff60: 00000000 00000000 00000000 80031714 dfdfdfcf 00000000 dfdfdfcf 8f1e4f00
ff80: 00000000 8e6fff84 8e6fff84 00000000 8e6fff90 8e6fff90 8e6fffac 8f1e4f40
ffa0: 80031640 00000000 00000000 8000f548 00000000 00000000 00000000 00000000
ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 dfdfdfcf cfdfdfdf
[<801ea538>] (_setup_req) from [<801ebca0>] (pl330_tasklet+0x41c/0x490)
[<801ebca0>] (pl330_tasklet) from [<801e9044>] (dmatest_func+0xb58/0x149c)
[<801e9044>] (dmatest_func) from [<80031714>] (kthread+0xd4/0xec)
[<80031714>] (kthread) from [<8000f548>] (ret_from_fork+0x14/0x2c)
Code: e3a03001 e3e01043 e5c03001 e59d3048 (e5802002)

This happens because _emit_{ADDH,MOV,GO) accessing to unaligned data
while writing to buffer. Fix it with writing to buffer byte by byte.

Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-08 21:26:28 +05:30
Vinod Koul
646b3b569e dmaengine: k3dma: move to dma_pool_zalloc
Replace dma_pool_alloc & memset with dma_pool_zalloc.

Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-08 21:24:21 +05:30
Vinod Koul
12154c8737 dmaengine: at_hdmac: move to dma_pool_zalloc
Replace dma_pool_alloc & memset with dma_pool_zalloc.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-08 21:24:17 +05:30
Alexandre Belloni
d3f8dc4202 dmaengine: at_xdmac: don't restore unsaved status
save_gs is supposed to save the channel status in order to be restored at
resume time but it is never updated and is always 0. Anyway, the channel
status is updated in the per channel loop later in the resume function.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-06 10:45:48 +05:30
Pan Bian
7393fca924 dmaengine: ioat: set error code on failures
In function ioat_xor_val_self_test(), when the calls to
dma_mapping_error() fail, the value of return variable err is 0
(indicates no error). As a result, the return value may be inconsistent
with the execution status. This patch fixes the bug by assigning
"-ENOMEM" to err on the error path.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188601
Signed-off-by: Pan Bian <bianpan2016@163.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-06 10:28:18 +05:30
Pan Bian
b424d2a0a1 dmaengine: ioat: set error code on failures
In function ioat_dma_self_test(), when the calls to dma_mapping_error()
fails, the value of return variable err is 0 (indicates no error). As a
result, the return value may be inconsistent with the execution status.
This patch fixes the bug by assigning -ENOMEM to err on the error path.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188591
Signed-off-by: Pan Bian <bianpan2016@163.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-12-06 10:28:11 +05:30
Eugeniy Paltsev
bd2c6636cc dmaengine: DW DMAC: add multi-block property to device tree
Several versions of DW DMAC have multi block transfers hardware
support. Hardware support of multi block transfers is disabled
by default if we use DT to configure DMAC and software emulation
of multi block transfers used instead.
Add multi-block property, so it is possible to enable hardware
multi block transfers (if present) via DT.

Switch from per device is_nollp variable to multi_block array
to be able enable/disable multi block transfers separately per
channel.

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:57:50 +05:30
Eugeniy Paltsev
258f2277a9 dmaengine: DW DMAC: enable memory-to-memory transfers support
All known devices, which use DT for configuration, support
memory-to-memory transfers. So enable it by default, if we read
configuration from DT.

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:57:17 +05:30
Vignesh R
08c824e87e dmaengine: edma: re-initialize dummy slot during system resume
The last param set in a transfer should always be pointing to dummy
param set in non-cyclic mode. When system wakes from low power state
EDMA PARAM slots may be reset to random values. Hence, re-initialize
dummy slot to dummy param set on system resume.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:55:05 +05:30
Peter Ujfalusi
201ac4861c dmaengine: omap-dma: Support for slave devices with data port window
Based on the src/dst_port_window_size - if it is set - configure the DMA
channel to use double indexing in order to be able to loop within the
address window.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:54:04 +05:30
Souptick Joarder
9dcd74089a dmaengine: at_xdmac: Use dma_pool_zalloc
We should use dma_pool_zalloc instead of dma_pool_alloc/memset.

Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:50:46 +05:30
Souptick Joarder
c2e60fc702 dmaengine: zx296702_dma: Use dma_pool_zalloc
We should use dma_pool_zalloc instead of dma_pool_alloc/memset.

Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:50:40 +05:30
Dave Jiang
d648160863 dmaengine: dmatest: honor alignment restriction for buffers
Existing implementation does not honor the alignment restrictions imposed
by the DMA engines. Allocate buffers with built in slack for honoring
alignment restrictions. Creating new arrays to hold the aligned pointers
and use those pointers for operations.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:50:18 +05:30
Dave Jiang
31d182574a dmaengine: fix spacing issues for dmatest
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-30 08:50:18 +05:30
Souptick Joarder
5c279b1003 dmaengine: pch_dma: Replace pci_pool_alloc by pci_pool_zalloc
Inside pdc_alloc_desc(), pci_pool_alloc() followed by memset will be
replaced by pci_pool_zalloc()

Signed-off-by: Souptick joarder <jrdr.linux@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-29 08:42:13 +05:30
Hao Zhang
644e906f92 dmaengine: sun6i: fix the uninitialized value for v_lli
dma_pool_alloc does not initialize the value of the newly allocated
block for the v_lli, and the uninitilize value make the tests failed
which is on pine64 with dmatest.
we can fix it just change the "|=" to "=" for the v_lli->cfg.

Signed-off-by: Hao Zhang <hao5781286@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-25 11:49:38 +05:30
Geliang Tang
812608d196 dmaengine: mv_xor: use builtin_platform_driver
Use builtin_platform_driver() helper to simplify the code.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-25 11:47:39 +05:30
Stefan Roese
c5db858bdf dmaengine: mv_xor: Add support for scatter-gather DMA mode
This patch adds memory to memory scatter-gather support to the Marvell
mv_or DMA driver.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Marcin Wojtas <mw@semihalf.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-25 11:16:36 +05:30
Andy Shevchenko
e9bb8a9df3 dmaengine: hsu: pci: switch to new API for IRQ allocation
There is new API in place which provides allocation mechanism of interrupts for
PCI devices. Use it in the HSU DMA driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-25 11:11:08 +05:30
Nandor Han
85f57752b3 dmaengine: imx-sdma - correct the dma transfer residue calculation
The residue calculation was taking in consideration that dma
transaction status will be always retrieved in the dma callback
used to inform that dma transfer is complete. However this is not
the case for all subsystems that use dma. Some subsystems use a
timer to check the dma status periodically.

Therefore the calculation was updated and residue is calculated
accordingly by a) update the residue calculation taking in
consideration the last used buffer index by using *buf_ptail* variable
and b) chn_real_count (number of bytes transferred) is initialized to
zero, when dma channel is created, to avoid using an uninitialized
value in residue calculation when dma status is checked without
waiting dma complete event.

Signed-off-by: Nandor Han <nandor.han@ge.com>
Acked-by: Peter Senna Tschudin <peter.senna@collabora.com>
Tested-by: Peter Senna Tschudin <peter.senna@collabora.com>
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-25 11:05:14 +05:30
Sinan Kaya
75ff76687c dmaengine: qcom_hidma: autoload while probing ACPI
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>
2016-11-23 09:47:32 +05:30
Len Brown
b65ce83f2a i7300_idle: Remove this driver
In preparation for removing the idle_notifier, remove its only user, the
i7300_idle driver.

i7300_idle was deployed in 2008 to reduce idle memory power on systems
using the i7300 chipset.  The driver worked by throttling the
fully-buffered DIMMs during idle periods using the IOAT DMA engine.

The driver ran only on the i7300 chip-set, and no other hardware has used
this mechanism.  The driver no longer has a maintainer.

Removing this driver will increase idle power on i7300 systems when they
run the new kernel without the driver.

Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/ad6a044e57cc75f44cc8621abe846e58f7882243.1479449716.git.len.brown@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-11-18 12:07:56 +01:00
Tony Lindgren
d5afc1b68a dmaengine: cppi41: More PM runtime fixes
Fix use of u32 instead of int for checking for negative errors values
as pointed out by Dan Carpenter <dan.carpenter@oracle.com>.

And while testing the PM runtime error path by randomly returning
failed values in runtime resume, I noticed two more places that need
fixing:

- If pm_runtime_get_sync() fails in probe, we still need to do
  pm_runtime_put_sync() to keep the use count happy. We could call
  pm_runtime_put_noidle() on the error path, but we're just going
  to call pm_runtime_disable() after that so pm_runtime_put_sync()
  will do what we want

- We should print an error if pm_runtime_get_sync() fails in
  cppi41_dma_alloc_chan_resources() so we know where it happens

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 740b4be3f7 ("dmaengine: cpp41: Fix handling of error path")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-17 16:09:23 +05:30
Sylwester Nawrocki
da6f8ca13f dmaengine: pl08x: Add support for the DMA slave map
This patch adds support for the new channel request API introduced
in commit a8135d0d79
"dmaengine: core: Introduce new, universal API to request a channel".

param field of struct dma_slave_map type entries in the platform
data structure should be pointing to struct pl08x_channel_data
of related DMA channel.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-17 15:51:28 +05:30
Vinod Koul
3d6b3715fb dmaengine: st_fdma: Revert: "Revert: Update st_fdma to 'depends on REMOTEPROC'"
This reverts commit 6d066389d5 "(dmaengine:
st_fdma: Revert: Update st_fdma to 'depends on REMOTEPROC')" as the commit
it reverted was fine.

Reported-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-17 15:24:27 +05:30
Sinan Kaya
c6e4584dab dmaengine: qcom_hidma: cleanup sysfs entries during remove
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>
2016-11-15 08:58:12 +05:30
Tony Lindgren
740b4be3f7 dmaengine: cpp41: Fix handling of error path
If we return early on pm_runtime_get() error, we need to also call
pm_runtime_put_noidle() as pointed out in a musb related thread
by Johan Hovold <johan@kernel.org>. This is to keep the PM runtime
use counts happy.

Fixes: fdea2d09b9 ("dmaengine: cppi41: Add basic PM runtime support")
Cc: Johan Hovold <johan@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-11-14 14:00:16 +05:30