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| * | dma: Make the 'mask' parameter of __dma_request_channel constLars-Peter Clausen2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | The 'mask' parameter is not modified in __dma_request_channel and really shouldn't be. Make this explicit by making the parameter const. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmaengine:sirf:take clock and enable it while probingBarry Song2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | there is hardcode which enabled the clock of dmaengine before, this patch takes the clock by standard clock API and enable it in probe. Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dw_dmac: don't wait for FIFO_EMPTY endlessly in dwc_chan_pauseAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we pause the channel after transfer is completed we might stuck in the dwc_chan_pause() because the FIFO_EMPTY flag will never be asserted. To avoid the endless loop we introduce a timeout here (*). The proper solution is to somehow get the residue in FIFO and avoid busyloop when transfer is done, but this task is not simple and fast. Unfortunately we can't use cpu_relax() in conjunction with jiffies checker, due to we have interrupts disabled by spin_lock_irqsave() and there is a big chance that no interrupts will come to update the jiffies.. (*) The worst case is AHB write * FIFO size / hclk = 5.12 us, where AHB write = 2 cycles, hclk = 100 MHz, burst size = 1 byte, FIFO size = 256 bytes. The proposed 40us timeout might be considered as a big one, though we enter to that state only when we have the transfer already completed. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dma: imx-dma: Remove redundant NULL check before kfreeSyam Sidhardhan2013-04-15
| | | | | | | | | | | | | | | | | | | | | kfree on NULL pointer is a no-op. Signed-off-by: Syam Sidhardhan <s.syam@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dma: ipu: ipu_idmac: Fix section mismatchFabio Estevam2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 84c1e63c12 (dma: Remove erroneous __exit and __exit_p() references) the following section mismatch happens: WARNING: drivers/built-in.o(.text+0x20f94): Section mismatch in reference from the function ipu_remove() to the function .exit.text:ipu_idmac_exit() The function ipu_remove() references a function in an exit section. Often the function ipu_idmac_exit() has valid usage outside the exit section and the fix is to remove the __exit annotation of ipu_idmac_exit. Remove the '__exit' annotation from ipu_idmac_exit in order to fix it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Maxin B. John <maxin.john@enea.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dma: tegra: assume CONFIG_OFStephen Warren2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | Tegra only supports, and always enables, device tree. Remove all ifdefs and runtime checks for DT support from the driver. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dma: pl330: Convert to devm_ioremap_resource()Sachin Kamat2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: append verify result to resultsAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Comparison between buffers is stored to the dedicated structure. Note that the verify result is now accessible only via file 'results' in the debugfs. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: gather test results in the linked listAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch provides a storage for the test results in the linked list. The gathered data could be used after test is done. The new file 'results' represents gathered data of the in progress test. The messages collected are printed to the kernel log as well. Example of output: % cat /sys/kernel/debug/dmatest/results dma0chan0-copy0: #1: No errors with src_off=0x7bf dst_off=0x8ad len=0x3fea (0) The message format is unified across the different types of errors. A number in the parens represents additional information, e.g. error code, error counter, or status. Note that the buffer comparison is done in the old way, i.e. data is not collected and just printed out. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: define MAX_ERROR_COUNT constantAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | Its meaning is to limit amount of error messages to be printed out when buffer mismatch is occured. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: return actual state in 'run' fileAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following command should return actual state of the test. % cat /sys/kernel/debug/dmatest/run To wait for test done the user may perform a busy loop that checks the state. % while [ $(cat /sys/kernel/debug/dmatest/run) = "Y" ] > do > echo -n "." > sleep 1 > done > echo Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: run test via debugfsAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of doing modprobe dmatest ... modprobe -r dmatest we allow user to run tests interactively. The dmatest could be built as module or inside kernel. Let's consider those cases. 1. When dmatest is built as a module... After mounting debugfs and loading the module, the /sys/kernel/debug/dmatest folder with nodes will be created. They are the same as module parameters with addition of the 'run' node that controls run and stop phases of the test. Note that in this case test will not run on load automatically. Example of usage: % echo dma0chan0 > /sys/kernel/debug/dmatest/channel % echo 2000 > /sys/kernel/debug/dmatest/timeout % echo 1 > /sys/kernel/debug/dmatest/iterations % echo 1 > /sys/kernel/debug/dmatest/run After a while you will start to get messages about current status or error like in the original code. Note that running a new test will stop any in progress test. 2. When built-in in the kernel... The module parameters that is supplied to the kernel command line will be used for the first performed test. After user gets a control, the test could be interrupted or re-run with same or different parameters. For the details see the above section "1. When dmatest is built as a module..." In both cases the module parameters are used as initial values for the test case. You always could check them at run-time by running % grep -H . /sys/module/dmatest/parameters/* Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: split test parameters to separate structureAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | Better to keep test parameters separate from internal variables. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: move dmatest_channels and nr_channels to dmatest_infoAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need to have them global and later we would like to protect access to them as well. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: create dmatest_info to keep test parametersAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The proposed change will remove usage of the module parameters as global variables. In future it helps to run different test cases sequentially. The patch introduces the run_threaded_test() and stop_threaded_test() functions that could be used later outside of dmatest_init, dmatest_exit scope. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: allocate memory for pq_coefs from heapAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | This will help in future to hide a global variable usage. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmatest: cancel thread immediately when asked forAndy Shevchenko2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If user have the timeout alike issues and wants to cancel the thread immediately, the current call of wait_event_freezable_timeout is preventing to this until timeout is expired. Thus, user will experience the unnecessary delays. Adding kthread_should_stop() check inside wait_event_freezable_timeout() solves that. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | ioatdma: allow all channels to have irq coalescing supportDave Jiang2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Looks like only the RAID channels are allowed to have irq coalescing support in the existing code. Fixing that. The ioat3 cleanup code can handle memcpy ops anyways Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <djbw@fb.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | ioatdma: make debug output more readableDave Jiang2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | Making OP field a hex instead of integer to make it more readable. Also add the dump out of the NEXT field. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <djbw@fb.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dma: Remove erroneous __exit and __exit_p() referencesMaxin B. John2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removing the annotation with __exit and referencing with __exit_p() present in dma driver module remove hooks. Part of the __devexit and __devexit_p() purge. Signed-off-by: Maxin B. John <maxin.john@enea.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dma: timb_dma: Fix compiler warningMaxin B. John2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | Fix this compiler warning: warning: 'td_remove' defined but not used [-Wunused-function] Signed-off-by: Maxin B. John <maxin.john@enea.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | pch_dma: Use GFP_ATOMIC because called from interrupt contextTomoya MORINAGA2013-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pdc_desc_get() is called from pd_prep_slave_sg, and the function is called from interrupt context(e.g. Uart driver "pch_uart.c"). In fact, I saw kernel error message. So, GFP_ATOMIC must be used not GFP_NOIO. Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | DMA: PL330: allow submitting 2 requests at a timeJassi Brar2013-04-15
| |/ | | | | | | | | | | | | | | | | | | | | Fix the logic to allow mc programming of second transfer after first has been done, by removing immediate return upon success and iterating until we detect QFull or DMAC dying. Reported-by: Alvaro Moran <dirac3000@gmail.com> Tested-by: Alvaro Moran <dirac3000@gmail.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | Merge tag 'dt-for-linus-2' of ↵Linus Torvalds2013-05-07
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC device tree updates (part 2) from Arnd Bergmann: "These are mostly new device tree bindings for existing drivers, as well as changes to the device tree source files to add support for those devices, and a couple of new boards, most notably Samsung's Exynos5 based Chromebook. The changes depend on earlier platform specific updates and touch the usual platforms: omap, exynos, tegra, mxs, mvebu and davinci." * tag 'dt-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (169 commits) ARM: exynos: dts: cros5250: add EC device ARM: dts: Add sbs-battery for exynos5250-snow ARM: dts: Add i2c-arbitrator bus for exynos5250-snow ARM: dts: add mshc controller node for Exynos4x12 SoCs ARM: dts: Add chip-id controller node on Exynos4/5 SoC ARM: EXYNOS: Create virtual I/O mapping for Chip-ID controller using device tree ARM: davinci: da850-evm: add SPI flash support ARM: davinci: da850: override SPI DT node device name ARM: davinci: da850: add SPI1 DT node spi/davinci: add DT binding documentation spi/davinci: no wildcards in DT compatible property ARM: dts: mvebu: Convert mvebu device tree files to 64 bits ARM: dts: mvebu: introduce internal-regs node ARM: dts: mvebu: Convert all the mvebu files to use the range property ARM: dts: mvebu: move all peripherals inside soc ARM: dts: mvebu: fix cpus section indentation ARM: davinci: da850: add EHRPWM & ECAP DT node ARM/dts: OMAP3: fix pinctrl-single configuration ARM: dts: Add OMAP3430 SDP NOR flash memory binding ARM: dts: Add NOR flash bindings for OMAP2420 H4 ...
| * | Merge branch 'late/dt' into next/dt2Arnd Bergmann2013-05-06
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is support for the ARM Chromebook, originally scheduled as a "late" pull request. Since it's already late now, we can combine this into the existing next/dt2 branch. * late/dt: ARM: exynos: dts: cros5250: add EC device ARM: dts: Add sbs-battery for exynos5250-snow ARM: dts: Add i2c-arbitrator bus for exynos5250-snow ARM: dts: Add chip-id controller node on Exynos4/5 SoC ARM: EXYNOS: Create virtual I/O mapping for Chip-ID controller using device tree
| * | dma: mxs-dma: move to generic device tree bindingShawn Guo2013-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update mxs-dma driver to adopt generic DMA device tree binding. It calls of_dma_controller_register() with mxs specific of_dma_xlate to get the generic DMA device tree helper support. Then DMA clients only need to call dma_request_slave_channel() for requesting a DMA channel from dmaengine. The existing way of requesting channel, clients directly call dma_request_channel(), still work there, and will be removed after all mxs-dma clients get converted to generic DMA device tree helper. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
| * | dma: mxs-dma: use devm_* managed functionsShawn Guo2013-04-04
| | | | | | | | | | | | | | | | | | | | | Use devm_* managed functions to simplify probe() error handling. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-04-22
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/emulex/benet/be_main.c drivers/net/ethernet/intel/igb/igb_main.c drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c include/net/scm.h net/batman-adv/routing.c net/ipv4/tcp_input.c The e{uid,gid} --> {uid,gid} credentials fix conflicted with the cleanup in net-next to now pass cred structs around. The be2net driver had a bug fix in 'net' that overlapped with the VLAN interface changes by Patrick McHardy in net-next. An IGB conflict existed because in 'net' the build_skb() support was reverted, and in 'net-next' there was a comment style fix within that code. Several batman-adv conflicts were resolved by making sure that all calls to batadv_is_my_mac() are changed to have a new bat_priv first argument. Eric Dumazet's TS ECR fix in TCP in 'net' conflicted with the F-RTO rewrite in 'net-next', mostly overlapping changes. Thanks to Stephen Rothwell and Antonio Quartulli for help with several of these merge resolutions. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | dmaengine: at_hdmac: fix race condition in atc_advance_work()Ludovic Desroches2013-04-18
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The BUG_ON() directive is triggered probably due to a latency modification following inclusion of commit c10d73671ad3 ("softirq: reduce latencies"). This condition has not been met before 3.9-rc1 and doesn't trigger without this patch. We now make sure that DMA channel is idle before calling atc_complete_all() which makes the BUG_ON() "protection" useless. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2013-04-11
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull slave-dmaengine fixes from Vinod Koul: "The first one fixes issue in pl330 to check for DT compatible and the second one fixes omap-dma to start without delay" * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: omap-dma: Start DMA without delay for cyclic channels DMA: PL330: Add check if device tree compatible
| | * | dmaengine: omap-dma: Start DMA without delay for cyclic channelsPeter Ujfalusi2013-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cyclic DMA is only used by audio which needs DMA to be started without a delay. If the DMA for audio is started using the tasklet we experience random channel switch (to be more precise: channel shift). Reported-by: Peter Meerwald <pmeerw@pmeerw.net> CC: stable@vger.kernel.org # v3.7+ Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| | * | DMA: PL330: Add check if device tree compatiblePadmavathi Venna2013-04-02
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | This patch register the dma controller with generic dma helpers only in DT case. This also adds some extra error handling in the driver. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Reported-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-04-07
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/nfc/microread/mei.c net/netfilter/nfnetlink_queue_core.c Pull in 'net' to get Eric Biederman's AF_UNIX fix, upon which some cleanups are going to go on-top. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'for-linus' of ↵Linus Torvalds2013-04-03
| |\ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Just a bunch of bugfixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/mm: provide emtpy check_pgt_cache() function s390/uaccess: fix page table walk s390/3270: fix minor_start issue s390/uaccess: fix clear_user_pt() s390/scm_blk: fix error return code in scm_blk_init() s390/scm_block: fix printk format string drivers/Kconfig: add several missing GENERIC_HARDIRQS dependencies
| | * drivers/Kconfig: add several missing GENERIC_HARDIRQS dependenciesHeiko Carstens2013-03-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this patch an allmodconfig finally builds on s390 again. Fixes these build errors: ERROR: "devm_request_threaded_irq" [drivers/spi/spi-altera.ko] undefined! ERROR: "devm_request_threaded_irq" [drivers/media/platform/sh_veu.ko] undefined! ERROR: "devm_request_threaded_irq" [drivers/dma/dw_dmac.ko] undefined! Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-04-01
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: net/mac80211/sta_info.c net/wireless/core.h Two minor conflicts in wireless. Overlapping additions of extern declarations in net/wireless/core.h and a bug fix overlapping with the addition of a boolean parameter to __ieee80211_key_free(). Signed-off-by: David S. Miller <davem@davemloft.net>
| * | dw_dmac: adjust slave_id accordingly to request line baseAndy Shevchenko2013-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some hardware configurations we have got the request line with the offset. The patch introduces convert_slave_id() helper for that cases. The request line base is came from the driver data provided by the platform_device_id table. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmaengine: dw_dma: fix endianess for DT xlate functionArnd Bergmann2013-03-30
| |/ | | | | | | | | | | | | | | | | | | | | | | | | As reported by Wu Fengguang's build robot tracking sparse warnings, the dma_spec arguments in the dw_dma_xlate are already byte swapped on little-endian platforms and must not get swapped again. This code is currently not used anywhere, but will be used in Linux 3.10 when the ARM SPEAr platform starts using the generic DMA DT binding. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* / ioat/dca: Update DCA BIOS workarounds to use TAINT_FIRMWARE_WORKAROUNDAlexander Duyck2013-03-22
|/ | | | | | | | | | | | | | | This patch is meant to be a follow-up for a patch originally submitted under the title "ioat: Do not enable DCA if tag map is invalid". It was brought to my attention that the preferred approach for BIOS workarounds is to set the taint flag for TAINT_FIRMWARE_WORKAROUND for systems that require BIOS workarounds. This change makes it so that the DCA workarounds for broken BIOSes will now use WARN_TAINT_ONCE(1, TAINT_FIRMWARE_WORKAROUND, ...) instead of just printing a message via dev_err. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2013-03-03
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | Pull second set of slave-dmaengine updates from Vinod Koul: "Arnd's patch moves the dw_dmac to use generic DMA binding. I agreed to merge this late as it will avoid the conflicts between trees. The second patch from Matt adding a dma_request_slave_channel_compat API was supposed to be picked up, but somehow never got picked up. Some patches dependent on this are already in -next :(" * 'next' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: dw_dmac: move to generic DMA binding dmaengine: add dma_request_slave_channel_compat()
| * dmaengine: dw_dmac: move to generic DMA bindingArnd Bergmann2013-02-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The original device tree binding for this driver, from Viresh Kumar unfortunately conflicted with the generic DMA binding, and did not allow to completely seperate slave device configuration from the controller. This is an attempt to replace it with an implementation of the generic binding, but it is currently completely untested, because I do not have any hardware with this particular controller. The patch applies on top of the slave-dma tree, which contains both the base support for the generic DMA binding, as well as the earlier attempt from Viresh. Both of these are currently not merged upstream however. This version incorporates feedback from Viresh Kumar, Andy Shevchenko and Russell King. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Vinod Koul <vinod.koul@linux.intel.com> Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | dmaengine: convert to idr_alloc()Tejun Heo2013-02-27
| | | | | | | | | | | | | | | | | | Convert to the much saner new idr interface. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Dan Williams <djbw@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2013-02-26
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull slave-dmaengine updates from Vinod Koul: "This is fairly big pull by my standards as I had missed last merge window. So we have the support for device tree for slave-dmaengine, large updates to dw_dmac driver from Andy for reusing on different architectures. Along with this we have fixes on bunch of the drivers" Fix up trivial conflicts, usually due to #include line movement next to each other. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (111 commits) Revert "ARM: SPEAr13xx: Pass DW DMAC platform data from DT" ARM: dts: pl330: Add #dma-cells for generic dma binding support DMA: PL330: Register the DMA controller with the generic DMA helpers DMA: PL330: Add xlate function DMA: PL330: Add new pl330 filter for DT case. dma: tegra20-apb-dma: remove unnecessary assignment edma: do not waste memory for dma_mask dma: coh901318: set residue only if dma is in progress dma: coh901318: avoid unbalanced locking dmaengine.h: remove redundant else keyword dma: of-dma: protect list write operation by spin_lock dmaengine: ste_dma40: do not remove descriptors for cyclic transfers dma: of-dma.c: fix memory leakage dw_dmac: apply default dma_mask if needed dmaengine: ioat - fix spare sparse complain dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c ioatdma: fix race between updating ioat->head and IOAT_COMPLETION_PENDING dw_dmac: add support for Lynxpoint DMA controllers dw_dmac: return proper residue value dw_dmac: fill individual length of descriptor ...
| * DMA: PL330: Register the DMA controller with the generic DMA helpersPadmavathi Venna2013-02-14
| | | | | | | | | | | | | | | | | | This patch registers the pl330 dma controller driver with the generic device tree dma helper functions. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * DMA: PL330: Add xlate functionPadmavathi Venna2013-02-14
| | | | | | | | | | | | | | | | | | | | Add xlate to translate the device-tree binding information into the appropriate format. The filter function requires the dma controller device and dma channel number as filter_params. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * DMA: PL330: Add new pl330 filter for DT case.Padmavathi Venna2013-02-14
| | | | | | | | | | | | | | | | | | | | This patch adds a new pl330_dt_filter for DT case to filter the required channel based on the new filter params and modifies the old filter only for non-DT case as suggested by Arnd Bergmann. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dma: tegra20-apb-dma: remove unnecessary assignmentAndy Shevchenko2013-02-14
| | | | | | | | | | | | | | | | | | | | There is no need to assign 0 to residue, because dma_cookie_status() does this for us. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * edma: do not waste memory for dma_maskAndy Shevchenko2013-02-14
| | | | | | | | | | | | | | | | | | | | Accordingly to commentary in the platform_device_register_full the memory allocated for dma_mask will not going to be freed. That's why is better to assign dma_mask afterwards. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dma: coh901318: set residue only if dma is in progressAndy Shevchenko2013-02-14
| | | | | | | | | | | | | | | | | | | | When status is DMA_SUCCESS the residue should be zero. Otherwise it's a bug. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dma: coh901318: avoid unbalanced lockingAndy Shevchenko2013-02-14
| | | | | | | | | | | | | | | | | | | | | | In case the len is 0 we must return without trying to unlock the lock that was not locked. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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